HIGHWOODS PROPERTIES, INC., 10-K filed on 2/9/2016
Annual Report
v3.3.1.900
Document and Entity Information - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2015
Jan. 29, 2016
Jun. 30, 2015
Entity Information [Line Items]      
Entity Registrant Name HIGHWOODS PROPERTIES INC.    
Entity Central Index Key 0000921082    
Current Fiscal Year End Date --12-31    
Entity Filer Category Large Accelerated Filer    
Document Type 10-K    
Document Period End Date Dec. 31, 2015    
Document Fiscal Year Focus 2015    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Common Stock, Shares Outstanding   96,103,555  
Entity Public Float     $ 3.7
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Highwoods Realty Limited Partnership [Member]      
Entity Information [Line Items]      
Entity Registrant Name HIGHWOODS REALTY LIMITED PARTNERSHIP    
Entity Central Index Key 0000941713    
Current Fiscal Year End Date --12-31    
Entity Filer Category Non-accelerated Filer    
Document Type 10-K    
Document Period End Date Dec. 31, 2015    
Document Fiscal Year Focus 2015    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
v3.3.1.900
Consolidated Balance Sheets - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Real estate assets, at cost:    
Land $ 443,705 $ 367,895
Buildings and tenant improvements 4,063,328 3,493,992
Development in-process 194,050 201,409
Land held for development 68,244 78,266
Total real estate assets 4,769,327 4,141,562
Less-accumulated depreciation (1,007,104) (893,517)
Net real estate assets 3,762,223 3,248,045
Real estate and other assets, net, held for sale 240,948 236,815
Cash and cash equivalents 5,036 8,832
Restricted cash 16,769 14,595
Accounts receivable, net of allowance of $928 and $1,314, respectively 29,077 48,557
Mortgages and notes receivable, net of allowance of $287 and $275, respectively 2,096 13,116
Accrued straight-line rents receivable, net of allowance of $257 and $316, respectively 150,392 130,394
Investments in and advances to unconsolidated affiliates 20,676 50,685
Deferred financing and leasing costs, net of accumulated amortization of $123,723 and $108,122, respectively 241,663 222,448
Prepaid expenses and other assets, net of accumulated amortization of $15,648 and $13,887, respectively 24,552 25,636
Total Assets 4,493,432 3,999,123
Liabilities, Noncontrolling Interests in the Operating Partnership and Equity/Liabilities, Redeemable Operating Partnership Units and Capital:    
Mortgages and notes payable 2,499,614 2,071,389
Accounts payable, accrued expenses and other liabilities 233,988 231,482
Liabilities held for sale 14,119 15,113
Total Liabilities $ 2,747,721 $ 2,317,984
Commitments and contingencies
Noncontrolling interests in the Operating Partnership $ 126,429 $ 130,048
Equity/Capital:    
Preferred Stock, $.01 par value, 50,000,000 authorized shares; 8.625% Series A Cumulative Redeemable Preferred Shares (liquidation preference $1,000 per share), 29,050 and 29,060 shares issued and outstanding, respectively 29,050 29,060
Common Stock, $.01 par value, 200,000,000 authorized shares; 96,091,932 and 92,907,310 shares issued and outstanding, respectively 961 929
Additional paid-in capital 2,598,242 2,464,275
Distributions in excess of net income available for common stockholders (1,023,135) (957,370)
Accumulated other comprehensive loss (3,811) (3,912)
Total Stockholders’ Equity 1,601,307 1,532,982
Noncontrolling interests in consolidated affiliates 17,975 18,109
Total Equity/Capital: 1,619,282 1,551,091
Total Liabilities, Noncontrolling Interests in the Operating Partnership and Equity/Total Liabilities, Redeemable Operating Partnership Units and Capital 4,493,432 3,999,123
Highwoods Realty Limited Partnership [Member]    
Real estate assets, at cost:    
Land 443,705 367,895
Buildings and tenant improvements 4,063,328 3,493,992
Development in-process 194,050 201,409
Land held for development 68,244 78,266
Total real estate assets 4,769,327 4,141,562
Less-accumulated depreciation (1,007,104) (893,517)
Net real estate assets 3,762,223 3,248,045
Real estate and other assets, net, held for sale 240,948 236,815
Cash and cash equivalents 5,036 8,938
Restricted cash 16,769 14,595
Accounts receivable, net of allowance of $928 and $1,314, respectively 29,077 48,557
Mortgages and notes receivable, net of allowance of $287 and $275, respectively 2,096 13,116
Accrued straight-line rents receivable, net of allowance of $257 and $316, respectively 150,392 130,394
Investments in and advances to unconsolidated affiliates 20,676 50,685
Deferred financing and leasing costs, net of accumulated amortization of $123,723 and $108,122, respectively 241,663 222,448
Prepaid expenses and other assets, net of accumulated amortization of $15,648 and $13,887, respectively 24,552 25,636
Total Assets 4,493,432 3,999,229
Liabilities, Noncontrolling Interests in the Operating Partnership and Equity/Liabilities, Redeemable Operating Partnership Units and Capital:    
Mortgages and notes payable 2,499,614 2,071,389
Accounts payable, accrued expenses and other liabilities 233,988 231,396
Liabilities held for sale 14,119 15,113
Total Liabilities $ 2,747,721 $ 2,317,898
Commitments and contingencies
Redeemable Operating Partnership Units:    
Common Units, 2,899,752 and 2,936,955 outstanding, respectively $ 126,429 $ 130,048
Series A Preferred Units (liquidation preference $1,000 per unit), 29,050 and 29,060 units issued and outstanding, respectively 29,050 29,060
Total Redeemable Operating Partnership Units 155,479 159,108
Equity/Capital:    
General partner Common Units, 985,829 and 954,355 outstanding, respectively 15,759 15,078
Limited partner Common Units, 94,697,294 and 91,544,146 outstanding, respectively 1,560,309 1,492,948
Accumulated other comprehensive loss (3,811) (3,912)
Noncontrolling interests in consolidated affiliates 17,975 18,109
Total Equity/Capital: 1,590,232 1,522,223
Total Liabilities, Noncontrolling Interests in the Operating Partnership and Equity/Total Liabilities, Redeemable Operating Partnership Units and Capital $ 4,493,432 $ 3,999,229
v3.3.1.900
Consolidated Balance Sheets (Parentheticals) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Assets:    
Accounts receivable allowance $ 928 $ 1,314
Mortgages and notes receivable allowance 287 275
Accrued straight-line rents receivable allowance 257 316
Deferred financing and leasing costs, accumulated amortization 123,723 108,122
Prepaid expenses and other assets, accumulated amortization $ 15,648 $ 13,887
Equity/Capital:    
Preferred Stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred Stock, authorized shares (in shares) 50,000,000 50,000,000
Preferred Stock, liquidation preference (in dollars per share) $ 1,000 $ 1,000
Preferred Stock, shares issued (in shares) 29,050 29,060
Preferred Stock, shares outstanding (in shares) 29,050 29,060
Common Stock, par value (in dollars per share) $ 0.01 $ 0.01
Common Stock, authorized shares (in shares) 200,000,000 200,000,000
Common Stock, shares issued (in shares) 96,091,932 92,907,310
Common Stock, shares outstanding (in shares) 96,091,932 92,907,310
Highwoods Realty Limited Partnership [Member]    
Assets:    
Accounts receivable allowance $ 928 $ 1,314
Mortgages and notes receivable allowance 287 275
Accrued straight-line rents receivable allowance 257 316
Deferred financing and leasing costs, accumulated amortization 123,723 108,122
Prepaid expenses and other assets, accumulated amortization $ 15,648 $ 13,887
Redeemable Operating Partnership Units:    
Redeemable Common Units, outstanding (in shares) 2,899,752 2,936,955
Preferred Units liquidation preference (in dollars per share) $ 1,000 $ 1,000
Series A Preferred Units, issued (in shares) 29,050 29,060
Series A Preferred Units, outstanding (in shares) 29,050 29,060
Common Units:    
General partners' capital account, units outstanding (in shares) 985,829 954,355
Limited partners' capital account, units outstanding (in shares) 94,697,294 91,544,146
v3.3.1.900
Consolidated Statements of Income - USD ($)
shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Rental and other revenues $ 604,671 $ 555,871 $ 505,008
Operating expenses:      
Rental property and other expenses 215,941 205,884 184,187
Depreciation and amortization 201,918 180,637 162,937
Impairments of real estate assets 0 588 0
General and administrative 37,642 35,258 36,381
Total operating expenses 455,501 422,367 383,505
Interest expense:      
Contractual 82,245 82,287 88,838
Amortization of deferred financing costs 3,645 3,082 3,802
Financing obligation 162 (242) (754)
Total interest expense 86,052 85,127 91,886
Other income:      
Interest and other income 1,969 2,739 3,511
Losses on debt extinguishment (243) (308) (199)
Total other income 1,726 2,431 3,312
Income from continuing operations before disposition of investment properties and activity in unconsolidated affiliates 64,844 50,808 32,929
Gains/(losses) on disposition of property 11,444 44,352 (3)
Gain on disposition of investment in unconsolidated affiliate 4,155 0 0
Gain on acquisition of controlling interest in unconsolidated affiliate 0 0 7,451
Equity in earnings of unconsolidated affiliates 5,078 1,827 2,264
Income from continuing operations 85,521 96,987 42,641
Discontinued operations:      
Income from discontinued operations 15,739 18,601 26,858
Impairments of real estate assets 0 0 (2,194)
Net gains on disposition of discontinued operations 0 384 63,792
Total income from discontinued operations 15,739 18,985 88,456
Net income 101,260 115,972 131,097
Net (income) attributable to noncontrolling interests in the Operating Partnership (2,918) (3,542) (4,691)
Net (income) attributable to noncontrolling interests in consolidated affiliates (1,264) (1,466) (949)
Dividends on Preferred Stock (2,506) (2,507) (2,508)
Net income available for common stockholders $ 94,572 $ 108,457 $ 122,949
Earnings per Common Share - basic:      
Income from continuing operations available for common stockholders (in dollars per share) $ 0.84 $ 1.00 $ 0.44
Income from discontinued operations available for common stockholders (in dollars per share) 0.16 0.20 1.00
Net income available for common stockholders (in dollars per share) $ 1.00 $ 1.20 $ 1.44
Weighted average Common Shares outstanding - basic (in shares) 94,404 90,743 85,335
Earnings per Common Share - diluted:      
Income from continuing operations available for common stockholders (in dollars per share) $ 0.84 $ 0.99 $ 0.44
Income from discontinued operations available for common stockholders (in dollars per share) 0.16 0.20 1.00
Net income available for common stockholders (in dollars per share) $ 1.00 $ 1.19 $ 1.44
Weighted average Common Shares outstanding - diluted (in shares) [1],[2] 97,406 93,800 88,836
Net income available for common stockholders:      
Income from continuing operations available for common stockholders $ 79,308 $ 90,069 $ 37,890
Income from discontinued operations available for common stockholders 15,264 18,388 85,059
Net income available for common stockholders 94,572 108,457 122,949
Highwoods Realty Limited Partnership [Member]      
Rental and other revenues 604,671 555,871 505,008
Operating expenses:      
Rental property and other expenses 215,941 205,835 184,146
Depreciation and amortization 201,918 180,637 162,937
Impairments of real estate assets 0 588 0
General and administrative 37,642 35,307 36,422
Total operating expenses 455,501 422,367 383,505
Interest expense:      
Contractual 82,245 82,287 88,838
Amortization of deferred financing costs 3,645 3,082 3,802
Financing obligation 162 (242) (754)
Total interest expense 86,052 85,127 91,886
Other income:      
Interest and other income 1,969 2,739 3,511
Losses on debt extinguishment (243) (308) (199)
Total other income 1,726 2,431 3,312
Income from continuing operations before disposition of investment properties and activity in unconsolidated affiliates 64,844 50,808 32,929
Gains/(losses) on disposition of property 11,444 44,352 (3)
Gain on disposition of investment in unconsolidated affiliate 4,155 0 0
Gain on acquisition of controlling interest in unconsolidated affiliate 0 0 7,451
Equity in earnings of unconsolidated affiliates 5,078 1,827 2,213
Income from continuing operations 85,521 96,987 42,590
Discontinued operations:      
Income from discontinued operations 15,739 18,601 26,858
Impairments of real estate assets 0 0 (2,194)
Net gains on disposition of discontinued operations 0 384 63,792
Total income from discontinued operations 15,739 18,985 88,456
Net income 101,260 115,972 131,046
Net (income) attributable to noncontrolling interests in consolidated affiliates (1,264) (1,466) (949)
Distributions on Preferred Units (2,506) (2,507) (2,508)
Net income available for common unitholders $ 97,490 $ 111,999 $ 127,589
Earnings per Common Unit - basic:      
Income from continuing operations available for common unitholders (in dollars per share) $ 0.84 $ 1.00 $ 0.44
Income from discontinued operations available for common unitholders (in dollars per share) 0.17 0.20 1.00
Net income available for common unitholders (in dollars per share) $ 1.01 $ 1.20 $ 1.44
Weighted average Common Units outstanding - basic (in shares) 96,910 93,272 88,313
Earnings per Common Unit - diluted:      
Income from continuing operations available for common unitholders (in dollars per share) $ 0.84 $ 1.00 $ 0.44
Income from discontinued operations available for common unitholders (in dollars per share) 0.17 0.20 1.00
Net income available for common unitholders (in dollars per share) $ 1.01 $ 1.20 $ 1.44
Weighted average Common Units outstanding - diluted (in shares) [1],[2] 96,997 93,391 88,427
Net income available for common unitholders:      
Income from continuing operations available for common unitholders $ 81,751 $ 93,014 $ 39,133
Total income from discontinued operations 15,739 18,985 88,456
Net income available for common unitholders $ 97,490 $ 111,999 $ 127,589
[1] Includes all unvested restricted stock where dividends on such restricted stock are non-forfeitable.
[2] There were 0.2 million and 0.3 million options outstanding during the years ended December 31, 2015 and 2013, respectively, that were not included in the computation of diluted earnings per share because the impact of including such options would be anti-dilutive. There were no such options outstanding during the year ended December 31, 2014.
v3.3.1.900
Consolidated Statements of Comprehensive Income - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Comprehensive income/(loss):      
Net income $ 101,260 $ 115,972 $ 131,097
Other comprehensive income/(loss):      
Unrealized gains on tax increment financing bond 445 584 869
Unrealized gains/(losses) on cash flow hedges (4,040) (5,662) 5,778
Amortization of cash flow hedges 3,696 3,777 3,370
Total other comprehensive income/(loss) 101 (1,301) 10,017
Total comprehensive income 101,361 114,671 141,114
Less-comprehensive (income) attributable to noncontrolling interests (4,182) (5,008) (5,640)
Comprehensive income attributable to common stockholders/unitholders 97,179 109,663 135,474
Highwoods Realty Limited Partnership [Member]      
Comprehensive income/(loss):      
Net income 101,260 115,972 131,046
Other comprehensive income/(loss):      
Unrealized gains on tax increment financing bond 445 584 869
Unrealized gains/(losses) on cash flow hedges (4,040) (5,662) 5,778
Amortization of cash flow hedges 3,696 3,777 3,370
Total other comprehensive income/(loss) 101 (1,301) 10,017
Total comprehensive income 101,361 114,671 141,063
Less-comprehensive (income) attributable to noncontrolling interests (1,264) (1,466) (949)
Comprehensive income attributable to common stockholders/unitholders $ 100,097 $ 113,205 $ 140,114
v3.3.1.900
Consolidated Statements of Equity - USD ($)
$ in Thousands
Total
Highwoods Realty Limited Partnership [Member]
Common Stock [Member]
Series A Cumulative Redeemable Preferred Shares [Member]
General Partner Common Units [Member]
Highwoods Realty Limited Partnership [Member]
Limited Partner Common Units [Member]
Highwoods Realty Limited Partnership [Member]
Additional Paid-in Capital [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Highwoods Realty Limited Partnership [Member]
Noncontrolling Interests in Consolidated Affiliates [Member]
Noncontrolling Interests in Consolidated Affiliates [Member]
Highwoods Realty Limited Partnership [Member]
Distributions in Excess of Net Income Available for Common Stockholders [Member]
Balance (in shares) at Dec. 31, 2012     80,311,437                  
Balance at Dec. 31, 2012 $ 1,173,664 $ 1,143,804 $ 803 $ 29,077 $ 11,515 $ 1,140,164 $ 2,040,306 $ (12,628) $ (12,628) $ 4,753 $ 4,753 $ (888,647)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                        
Issuances of Common Units, net of issuance costs and tax withholdings   305,846     3,058 302,788     0   0  
Distributions paid on Common Units   (150,936)     (1,509) (149,427)     0   0  
Distributions paid on Preferred Units   (2,508)     (25) (2,483)     0   0  
Issuances of Common Stock - Shares     8,670,517                  
Issuances of Common Stock, net of issuance costs and tax withholdings 305,846   $ 87 0     305,759 0   0   0
Conversions of Common Units to Common Stock - Shares     789,144                  
Conversions of Common Units to Common Stock 28,788   $ 0 0     28,788 0   0   0
Dividends on Common Stock (145,964)   0 0     0 0   0   (145,964)
Dividends on Preferred Stock (2,508)   0 0     0 0   0   (2,508)
Adjustment of noncontrolling interests in the Operating Partnership to fair value (11,375)   0 0     (11,375) 0   0   0
Distributions to noncontrolling interests in consolidated affiliates (546) (546) 0 0 0 0 0 0 0 (546) (546) 0
Contributions from noncontrolling interests in consolidated affiliates 16,240 16,240 $ 0 0 0 0 0 0 0 16,240 16,240 0
Issuances of restricted stock - Shares     151,630                  
Issuances of restricted stock 0   $ 0 0     0 0   0   0
Share-based compensation expense, net of forfeitures - Shares     (1,813)                  
Share-based compensation expense, net of forfeitures 6,899 6,899 $ 9 0 69 6,830 6,890 0 0 0 0 0
Adjustment of Redeemable Common Units to fair value and contributions/distributions from/to the General Partner   18,700     187 18,513     0   0  
Net (income) attributable to noncontrolling interests in the Operating Partnership (4,691)   0 0     0 0   0   (4,691)
Net (income) attributable to noncontrolling interests in consolidated affiliates 0 0 0 0 (9) (940) 0 0 0 949 949 (949)
Comprehensive income:                        
Net income 131,097 131,046 0 0 1,310 129,736 0 0 0 0 0 131,097
Other comprehensive income/(loss) 10,017 10,017 0 0 0 0 0 10,017 10,017 0 0 0
Total comprehensive income 141,114 141,063                    
Balance at Dec. 31, 2013 1,507,467 1,478,562 $ 899 29,077 14,596 1,445,181 2,370,368 (2,611) (2,611) 21,396 21,396 (911,662)
Balance (in shares) at Dec. 31, 2013     89,920,915                  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                        
Issuances of Common Units, net of issuance costs and tax withholdings   112,624     1,126 111,498     0   0  
Redemptions of Common Units   (93)     (1) (92)     0   0  
Distributions paid on Common Units   (158,464)     (1,585) (156,879)     0   0  
Distributions paid on Preferred Units   (2,507)     (25) (2,482)     0   0  
Issuances of Common Stock - Shares     2,812,477                  
Issuances of Common Stock, net of issuance costs and tax withholdings 112,624   $ 28 0     112,596 0   0   0
Conversions of Common Units to Common Stock - Shares     4,417                  
Conversions of Common Units to Common Stock 162   $ 0 0     162 0   0   0
Dividends on Common Stock (154,165)   0 0     0 0   0   (154,165)
Dividends on Preferred Stock (2,507)   0 0     0 0   0   (2,507)
Adjustment of noncontrolling interests in the Operating Partnership to fair value (25,275)   0 0     (25,275) 0   0   0
Acquisition of noncontrolling interest in consolidated affiliate (4,126) (4,126) 0 0 (5) (508) (513) 0 0 (3,613) (3,613) 0
Distributions to noncontrolling interests in consolidated affiliates (1,140) (1,140) $ 0 0 0 0 0 0 0 (1,140) (1,140) 0
Issuances of restricted stock - Shares     169,501                  
Issuances of restricted stock 0   $ 0 0     0 0   0   0
Redemptions/repurchases of Preferred Stock (17)   0 $ (17)     0 0   0   0
Share-based compensation expense, net of forfeitures 6,939 6,939 2 69 6,870 6,937 0 0 0 0 0
Adjustment of Redeemable Common Units to fair value and contributions/distributions from/to the General Partner   (24,243)     (242) (24,001)     0   0  
Net (income) attributable to noncontrolling interests in the Operating Partnership (3,542)   0 $ 0     0 0   0   (3,542)
Net (income) attributable to noncontrolling interests in consolidated affiliates 0 0 0 0 (15) (1,451) 0 0 0 1,466 1,466 (1,466)
Comprehensive income:                        
Net income 115,972 115,972 0 0 1,160 114,812 0 0 0 0 0 115,972
Other comprehensive income/(loss) (1,301) (1,301) 0 0 0 0 0 (1,301) (1,301) 0 0 0
Total comprehensive income 114,671 114,671                    
Balance at Dec. 31, 2014 $ 1,551,091 1,522,223 $ 929 29,060 15,078 1,492,948 2,464,275 (3,912) (3,912) 18,109 18,109 (957,370)
Balance (in shares) at Dec. 31, 2014 92,907,310   92,907,310                  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                        
Issuances of Common Units, net of issuance costs and tax withholdings   125,537     1,255 124,282     0   0  
Distributions paid on Common Units   (164,601)     (1,646) (162,955)     0   0  
Distributions paid on Preferred Units   (2,506)     (25) (2,481)     0   0  
Issuances of Common Stock - Shares     3,023,710                  
Issuances of Common Stock, net of issuance costs and tax withholdings $ 125,537   $ 30 0     125,507 0   0   0
Conversions of Common Units to Common Stock - Shares     37,203                  
Conversions of Common Units to Common Stock 1,645   $ 0 0     1,645 0   0   0
Dividends on Common Stock (160,337)   0 0     0 0   0   (160,337)
Dividends on Preferred Stock (2,506)   0 0     0 0   0   (2,506)
Adjustment of noncontrolling interests in the Operating Partnership to fair value (67)   0 0     (67) 0   0   0
Distributions to noncontrolling interests in consolidated affiliates (1,398) (1,398) $ 0 0 0 0 0 0 0 (1,398) (1,398) 0
Issuances of restricted stock - Shares     128,951                  
Issuances of restricted stock 0   $ 0 0     0 0   0   0
Redemptions/repurchases of Preferred Stock (10)   $ 0 $ (10)     0 0   0   0
Share-based compensation expense, net of forfeitures - Shares     (5,242)                  
Share-based compensation expense, net of forfeitures 6,884 6,884 $ 2 69 6,815 6,882 0 0 0 0 0
Adjustment of Redeemable Common Units to fair value and contributions/distributions from/to the General Partner   2,732     28 2,704     0   0  
Net (income) attributable to noncontrolling interests in the Operating Partnership (2,918)   0 $ 0     0 0   0   (2,918)
Net (income) attributable to noncontrolling interests in consolidated affiliates 0 0 0 0 (13) (1,251) 0 0 0 1,264 1,264 (1,264)
Comprehensive income:                        
Net income 101,260 101,260 0 0 1,013 100,247 0 0 0 0 0 101,260
Other comprehensive income/(loss) 101 101 0 0 0 0 0 101 101 0 0 0
Total comprehensive income 101,361 101,361                    
Balance at Dec. 31, 2015 $ 1,619,282 $ 1,590,232 $ 961 $ 29,050 $ 15,759 $ 1,560,309 $ 2,598,242 $ (3,811) $ (3,811) $ 17,975 $ 17,975 $ (1,023,135)
Balance (in shares) at Dec. 31, 2015 96,091,932   96,091,932                  
v3.3.1.900
Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Operating activities:      
Net income $ 101,260 $ 115,972 $ 131,097
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 215,957 196,023 182,710
Amortization of lease incentives and acquisition-related intangible assets and liabilities 86 442 345
Share-based compensation expense 6,884 6,939 6,899
Allowance for losses on accounts and accrued straight-line rents receivable 2,103 2,182 1,516
Accrued interest on mortgages and notes receivable (357) (477) (485)
Amortization of deferred financing costs 3,645 3,082 3,802
Amortization of cash flow hedges 3,696 3,777 3,370
Amortization of mortgages and notes payable fair value adjustments (58) (788) (1,825)
Impairments of real estate assets 0 588 2,194
Losses on debt extinguishment 243 308 199
Net gains on disposition of property (11,444) (44,736) (63,789)
Gain on disposition of investment in unconsolidated affiliate (4,155) 0 0
Gain on acquisition of controlling interest in unconsolidated affiliate 0 0 (7,451)
Equity in earnings of unconsolidated affiliates (5,078) (1,827) (2,264)
Changes in financing obligation 162 (241) (753)
Distributions of earnings from unconsolidated affiliates 4,901 2,687 3,985
Changes in operating assets and liabilities:      
Accounts receivable 1,415 (3,114) (920)
Prepaid expenses and other assets 1,266 (615) 684
Accrued straight-line rents receivable (22,756) (21,685) (18,253)
Accounts payable, accrued expenses and other liabilities (8,891) 8,394 15,376
Net cash provided by operating activities 288,879 266,911 256,437
Investing activities:      
Investments in acquired real estate and related intangible assets, net of cash acquired (408,634) (163,641) (418,796)
Investments in development in-process (136,664) (183,873) (34,474)
Investments in tenant improvements and deferred leasing costs (115,503) (113,747) (103,243)
Investments in building improvements (55,881) (50,033) (53,189)
Investment in acquired noncontrolling interest in consolidated affiliate 0 (4,126) 0
Investment in acquired controlling interest in unconsolidated affiliate 0 0 (32,818)
Net proceeds from disposition of real estate assets 26,748 172,442 254,022
Net proceeds from disposition of investment in unconsolidated affiliate 6,919 0 0
Distributions of capital from unconsolidated affiliates 10,401 3,806 27,486
Investments in mortgages and notes receivable (1,772) (864) (902)
Repayments of mortgages and notes receivable 9,381 17,239 405
Investments in and advances to unconsolidated affiliates (659) (6,489) (429)
Repayments from unconsolidated affiliates 20,800 0 0
Redemption of investment In unconsolidated affiliate 0 4,660 0
Changes in restricted cash and other investing activities (9,293) (3,552) 5,335
Net cash used in investing activities (654,157) (328,178) (356,603)
Financing activities:      
Dividends on Common Stock (160,337) (154,165) (145,964)
Redemptions/repurchases of Preferred Stock (10) (17) 0
Redemptions of Common Units 0 (93) 0
Dividends on Preferred Stock (2,506) (2,507) (2,508)
Distributions to noncontrolling interests in the Operating Partnership (4,959) (4,994) (5,667)
Distributions to noncontrolling interests in consolidated affiliates (1,398) (1,140) (546)
Proceeds from the issuance of Common Stock 131,341 117,716 316,081
Costs paid for the issuance of Common Stock (2,040) (1,586) (7,678)
Repurchase of shares related to tax withholdings (3,764) (3,506) (2,557)
Borrowings on revolving credit facility 476,300 506,900 837,000
Repayments of revolving credit facility (386,300) (513,600) (644,300)
Borrowings on mortgages and notes payable 475,000 296,949 0
Repayments of mortgages and notes payable (156,120) (174,302) (259,202)
Payments on financing obligation (1,722) (2,904) (1,941)
Payments of debt extinguishment costs 0 (369) 0
Contributions from noncontrolling interests in consolidated affiliates 0 0 16,240
Changes in deferred financing costs and other financing activities (2,003) (2,467) (2,391)
Net cash provided by financing activities 361,482 59,915 96,567
Net decrease in cash and cash equivalents (3,796) (1,352) (3,599)
Cash and cash equivalents at beginning of the period 8,832 10,184 13,783
Cash and cash equivalents at end of the period 5,036 8,832 10,184
Supplemental disclosure of cash flow information:      
Cash paid for interest, net of amounts capitalized 82,242 83,086 85,919
Supplemental disclosure of non-cash investing and financing activities:      
Unrealized gains/(losses) on cash flow hedges (4,040) (5,662) 5,778
Conversions of Common Units to Common Stock 1,645 162 28,788
Changes in accrued capital expenditures 2,547 5,283 18,384
Write-off of fully depreciated real estate assets 48,698 42,633 31,008
Write-off of fully amortized deferred financing and leasing costs 38,264 25,286 27,347
Adjustment of noncontrolling interests in the Operating Partnership to fair value 67 25,275 11,375
Unrealized gains on tax increment financing bond 445 584 869
Assumption of mortgages and notes payable related to acquisition activities 19,277 0 165,515
Contingent consideration in connection with the acquisition of land 900 3,300 0
Option deposit applied upon acquisition of real estate assets 0 0 5,000
Highwoods Realty Limited Partnership [Member]      
Operating activities:      
Net income 101,260 115,972 131,046
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 215,957 196,023 182,710
Amortization of lease incentives and acquisition-related intangible assets and liabilities 86 442 345
Share-based compensation expense 6,884 6,939 6,899
Allowance for losses on accounts and accrued straight-line rents receivable 2,103 2,182 1,516
Accrued interest on mortgages and notes receivable (357) (477) (485)
Amortization of deferred financing costs 3,645 3,082 3,802
Amortization of cash flow hedges 3,696 3,777 3,370
Amortization of mortgages and notes payable fair value adjustments (58) (788) (1,825)
Impairments of real estate assets 0 588 2,194
Losses on debt extinguishment 243 308 199
Net gains on disposition of property (11,444) (44,736) (63,789)
Gain on disposition of investment in unconsolidated affiliate (4,155) 0 0
Gain on acquisition of controlling interest in unconsolidated affiliate 0 0 (7,451)
Equity in earnings of unconsolidated affiliates (5,078) (1,827) (2,213)
Changes in financing obligation 162 (241) (753)
Distributions of earnings from unconsolidated affiliates 4,901 2,687 3,965
Changes in operating assets and liabilities:      
Accounts receivable 1,415 (3,114) (920)
Prepaid expenses and other assets 1,266 (615) 684
Accrued straight-line rents receivable (22,756) (21,685) (18,253)
Accounts payable, accrued expenses and other liabilities (8,805) 8,383 15,421
Net cash provided by operating activities 288,965 266,900 256,462
Investing activities:      
Investments in acquired real estate and related intangible assets, net of cash acquired (408,634) (163,641) (418,796)
Investments in development in-process (136,664) (183,873) (34,474)
Investments in tenant improvements and deferred leasing costs (115,503) (113,747) (103,243)
Investments in building improvements (55,881) (50,033) (53,189)
Investment in acquired noncontrolling interest in consolidated affiliate 0 (4,126) 0
Investment in acquired controlling interest in unconsolidated affiliate 0 0 (32,818)
Net proceeds from disposition of real estate assets 26,748 172,442 254,022
Net proceeds from disposition of investment in unconsolidated affiliate 6,919 0 0
Distributions of capital from unconsolidated affiliates 10,401 3,806 27,486
Investments in mortgages and notes receivable (1,772) (864) (902)
Repayments of mortgages and notes receivable 9,381 17,239 405
Investments in and advances to unconsolidated affiliates (659) (6,489) (429)
Repayments from unconsolidated affiliates 20,800 0 0
Redemption of investment In unconsolidated affiliate 0 4,660 0
Changes in restricted cash and other investing activities (9,293) (3,552) 5,335
Net cash used in investing activities (654,157) (328,178) (356,603)
Financing activities:      
Distributions on Common Units (164,601) (158,464) (150,936)
Redemptions/repurchases of Preferred Units (10) (17) 0
Redemptions of Common Units 0 (93) 0
Distributions on Preferred Units (2,506) (2,507) (2,508)
Distributions to noncontrolling interests in consolidated affiliates (1,398) (1,140) (546)
Proceeds from the issuance of Common Units 131,341 117,716 316,081
Costs paid for the issuance of Common Units (2,040) (1,586) (7,678)
Repurchase of units related to tax withholdings (3,764) (3,506) (2,557)
Borrowings on revolving credit facility 476,300 506,900 837,000
Repayments of revolving credit facility (386,300) (513,600) (644,300)
Borrowings on mortgages and notes payable 475,000 296,949 0
Repayments of mortgages and notes payable (156,120) (174,302) (259,202)
Payments on financing obligation (1,722) (2,904) (1,941)
Payments of debt extinguishment costs 0 (369) 0
Contributions from noncontrolling interests in consolidated affiliates 0 0 16,240
Changes in deferred financing costs and other financing activities (2,890) (3,142) (3,098)
Net cash provided by financing activities 361,290 59,935 96,555
Net decrease in cash and cash equivalents (3,902) (1,343) (3,586)
Cash and cash equivalents at beginning of the period 8,938 10,281 13,867
Cash and cash equivalents at end of the period 5,036 8,938 10,281
Supplemental disclosure of cash flow information:      
Cash paid for interest, net of amounts capitalized 82,242 83,086 85,919
Supplemental disclosure of non-cash investing and financing activities:      
Unrealized gains/(losses) on cash flow hedges (4,040) (5,662) 5,778
Changes in accrued capital expenditures 2,547 5,283 18,384
Write-off of fully depreciated real estate assets 48,698 42,633 31,008
Write-off of fully amortized deferred financing and leasing costs 38,264 25,286 27,347
Adjustment of Redeemable Common Units to fair value (3,619) 23,568 (18,389)
Unrealized gains on tax increment financing bond 445 584 869
Assumption of mortgages and notes payable related to acquisition activities 19,277 0 165,515
Contingent consideration in connection with the acquisition of land 900 3,300 0
Option deposit applied upon acquisition of real estate assets $ 0 $ 0 $ 5,000
v3.3.1.900
Description of Business and Significant Accounting Policies
 12 Months Ended
Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Description of Business and Significant Accounting Policies
Description of Business and Significant Accounting Policies

Description of Business

Highwoods Properties, Inc. (the “Company”) is a fully integrated real estate investment trust (“REIT”) that provides leasing, management, development, construction and other customer-related services for its properties and for third parties. The Company conducts its activities through Highwoods Realty Limited Partnership (the “Operating Partnership”). At December 31, 2015, we owned or had an interest in 32.5 million rentable square feet of in-service properties, 1.5 million rentable square feet of properties under development and approximately 500 acres of development land.

The Company is the sole general partner of the Operating Partnership. At December 31, 2015, the Company owned all of the Preferred Units and 95.7 million, or 97.1%, of the Common Units in the Operating Partnership. Limited partners owned the remaining 2.9 million Common Units. In the event the Company issues shares of Common Stock, the net proceeds of the issuance are contributed to the Operating Partnership in exchange for additional Common Units. Generally, the Operating Partnership is obligated to redeem each Common Unit at the request of the holder thereof for cash equal to the value of one share of Common Stock based on the average of the market price for the 10 trading days immediately preceding the notice date of such redemption, provided that the Company, at its option, may elect to acquire any such Common Units presented for redemption for cash or one share of Common Stock. The Common Units owned by the Company are not redeemable. During 2015, the Company redeemed 37,203 Common Units for a like number of shares of Common Stock. As a result of this activity, in conjunction with the proceeds from issuances of Common Stock (see Note 12), the percentage of Common Units owned by the Company increased from 96.9% at December 31, 2014 to 97.1% at December 31, 2015.

Basis of Presentation

Our Consolidated Financial Statements are prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”). Our Consolidated Balance Sheets at December 31, 2014 were retrospectively revised from previously reported amounts to reclassify those properties classified as held for sale as of December 31, 2015. Our Consolidated Statements of Income for the years ended December 31, 2014 and 2013 were retrospectively revised from previously reported amounts to reclassify the operations for those properties classified as discontinued operations.

The Company's Consolidated Financial Statements include the Operating Partnership, wholly owned subsidiaries and those entities in which the Company has the controlling interest. The Operating Partnership's Consolidated Financial Statements include wholly owned subsidiaries and those entities in which the Operating Partnership has the controlling interest. We consolidate partnerships, joint ventures and limited liability companies when we control the major operating and financial policies of the entity through majority ownership or in our capacity as general partner or managing member. At December 31, 2015, three of the 50.0% or less owned in-service office properties in a joint venture were consolidated.

In addition, we consolidate those entities deemed to be variable interest entities in which we are determined to be the primary beneficiary. During 2015, we acquired three buildings and a land parcel using special purpose entities owned by qualified intermediaries to facilitate a potential Section 1031 reverse exchange under the Internal Revenue Code. To realize the tax deferral available under the Section 1031 exchange, we must complete the Section 1031 exchange, and take title to the to-be-exchanged buildings within 180 days of the acquisition date. We have determined that these entities are variable interest entities of which we are the primary beneficiary; and therefore, we consolidate these entities. As of December 31, 2015, these variable interest entities had total assets, liabilities and cash flows of $421.3 million, $16.3 million, and $7.1 million, respectively. At December 31, 2014, we had involvement with, but were not the primary beneficiary in, an entity that we concluded to be a variable interest entity. All intercompany transactions and accounts have been eliminated.

1.    Description of Business and Significant Accounting Policies – Continued

During the second quarter of 2015, as a result of our partner’s irrevocable exercise of a buy-sell provision in our SF-HIW Harborview Plaza, LP ("Harborview") joint venture agreement, our partner’s right to put its 80.0% equity interest back to us became no longer exercisable. As a result, we recorded the original contribution transaction as a partial sale and recognized $2.2 million of gain. Our investment in this joint venture then qualified for the equity method of accounting, which resulted in the retrospective revision of our Consolidated Balance Sheets and Consolidated Statements of Equity and Capital for all prior periods presented. Such retrospective revision is denoted using "as revised" in our Consolidated Financial Statements and accompanying notes. The effects of the retrospective application of the equity method of accounting to our Consolidated Statements of Income, Comprehensive Income and Cash Flows were not material. The effects of the retrospective application of the equity method of accounting to the Company's December 31, 2014 Balance Sheet were as follows:
 
 
December 31,
2014
 
Increase/(Decrease)
Net real estate assets
$
(29,400
)
Investments in and advances to unconsolidated affiliates
$
23,614

Total Assets
$
(5,786
)
Financing obligation
$
(14,557
)
Distributions in excess of net income available for common stockholders
$
8,771

Total Liabilities, Noncontrolling Interests in the Operating Partnership and Equity
$
(5,786
)

Use of Estimates

The preparation of consolidated financial statements in accordance with GAAP requires us to make estimates and assumptions that affect the amounts reported in our Consolidated Financial Statements and accompanying notes. Actual results could differ from those estimates.

Real Estate and Related Assets

Real estate and related assets are recorded at cost and stated at cost less accumulated depreciation. Renovations, replacements and other expenditures that improve or extend the life of assets are capitalized and depreciated over their estimated useful lives. Expenditures for ordinary maintenance and repairs are charged to expense as incurred. Depreciation is computed using the straight-line method over the estimated useful life of 40 years for buildings and depreciable land infrastructure costs, 15 years for building improvements and five to seven years for furniture, fixtures and equipment. Tenant improvements are amortized using the straight-line method over initial fixed terms of the respective leases, which generally are from three to 10 years. Depreciation expense for real estate assets was $168.7 million, $154.4 million and $138.2 million for the years ended December 31, 2015, 2014 and 2013, respectively.

Expenditures directly related to the development and construction of real estate assets are included in net real estate assets and are stated at depreciated cost. Development expenditures include pre-construction costs essential to the development of properties, development and construction costs, interest costs on qualifying assets, real estate taxes, development personnel salaries and related costs and other costs incurred during the period of development. Interest and other carrying costs are capitalized until the building is ready for its intended use, but not later than a year from cessation of major construction activity. We consider a construction project as substantially completed and ready for its intended use upon the completion of tenant improvements. We cease capitalization on the portion that is substantially completed and occupied or held available for occupancy, and capitalize only those costs associated with the portion under construction.

1.    Description of Business and Significant Accounting Policies – Continued

Expenditures directly related to the leasing of properties are included in deferred financing and leasing costs and are stated at amortized cost. Such expenditures are part of the investment necessary to execute leases and, therefore, are classified as investment activities in the statement of cash flows. All leasing commissions paid to third parties for new leases or lease renewals are capitalized. Internal leasing costs, which consist primarily of compensation, benefits and other costs, such as legal fees related to leasing activities, that are incurred in connection with successfully obtaining leases of properties are also capitalized. Capitalized leasing costs are amortized on a straight-line basis over the initial fixed terms of the respective leases, which generally are from three to 10 years. Estimated costs related to unsuccessful activities are expensed as incurred.

We record liabilities for the performance of asset retirement activities when the obligation to perform such activities is probable even when uncertainty exists about the timing and/or method of settlement.

Upon the acquisition of real estate assets, we assess the fair value of acquired tangible assets such as land, buildings and tenant improvements, intangible assets and liabilities such as above and below market leases, acquired in-place leases, customer relationships and other identifiable intangible assets and assumed liabilities. We assess fair value based on estimated cash flow projections that utilize discount and/or capitalization rates as well as available market information. The fair value of the tangible assets of an acquired property considers the value of the property as if it were vacant. 

The above and below market rate portions of leases acquired in connection with property acquisitions are recorded in deferred financing and leasing costs and in accounts payable, accrued expenses and other liabilities, respectively, at fair value and amortized into rental revenue over the remaining term of the respective leases as described below. Fair value is calculated as the present value of the difference between (1) the contractual amounts to be paid pursuant to each in-place lease and (2) our estimate of fair market lease rates for each corresponding in-place lease, using a discount rate that reflects the risks associated with the leases acquired and measured over a period equal to the remaining initial term of the lease for above-market leases and the remaining initial term plus the term of any renewal option that the customer would be economically compelled to exercise for below-market leases.

In-place leases acquired are recorded at fair value in deferred financing and leasing costs and are amortized to depreciation and amortization expense over the remaining term of the respective lease. The value of in-place leases is based on our evaluation of the specific characteristics of each customer's lease. Factors considered include estimates of carrying costs during hypothetical expected lease-up periods, current market conditions, the customer's credit quality and costs to execute similar leases. In estimating carrying costs, we include real estate taxes, insurance and other operating expenses and estimates of lost rentals at market rates during the expected lease-up periods, depending on local market conditions. In estimating costs to execute similar leases, we consider tenant improvements, leasing commissions and legal and other related expenses.
 
Real estate and other assets are classified as long-lived assets held for use or as long-lived assets held for sale. Real estate is classified as held for sale when the sale of the asset is probable, has been duly approved by the Company, a legally enforceable contract has been executed and the buyer's due diligence period, if any, has expired.

Impairments of Real Estate Assets and Investments in Unconsolidated Affiliates

With respect to assets classified as held for use, we perform an impairment analysis if events or changes in circumstances indicate that the carrying value may be impaired, such as a significant decline in occupancy, identification of materially adverse legal or environmental factors, change in our designation of an asset from core to non-core, which may impact the anticipated holding period, or a decline in market value to an amount less than cost. This analysis is generally performed at the property level, except when an asset is part of an interdependent group such as an office park, and consists of determining whether the asset's carrying amount will be recovered from its undiscounted estimated future operating and residual cash flows. These cash flows are estimated based on a number of assumptions that are subject to economic and market uncertainties including, among others, demand for space, competition for customers, changes in market rental rates, costs to operate each property and expected ownership periods. For properties under development, the cash flows are based on expected service potential of the asset or asset group when development is substantially complete.
 

1.    Description of Business and Significant Accounting Policies – Continued

If the carrying amount of a held for use asset exceeds the sum of its undiscounted future operating and residual cash flows, an impairment loss is recorded for the difference between estimated fair value of the asset and the carrying amount. We generally estimate the fair value of assets held for use by using discounted cash flow analyses. In some instances, appraisal information may be available and is used in addition to a discounted cash flow analysis. As the factors used in generating these cash flows are difficult to predict and are subject to future events that may alter our assumptions, the discounted and/or undiscounted future operating and residual cash flows estimated by us in our impairment analyses or those established by appraisal may not be achieved and we may be required to recognize future impairment losses on properties held for use.
 
We record assets held for sale at the lower of the carrying amount or estimated fair value. Fair value of assets held for sale is equal to the estimated or contracted sales price with a potential buyer, less costs to sell. The impairment loss is the amount by which the carrying amount exceeds the estimated fair value.
 
We also analyze our investments in unconsolidated affiliates for impairment. This analysis consists of determining whether an expected loss in market value of an investment is other than temporary by evaluating the length of time and the extent to which the market value has been less than cost, the financial condition and near-term prospects of the unconsolidated affiliate, and our intent and ability to retain our investment for a period of time sufficient to allow for any anticipated recovery in market value. As the factors used in this analysis are difficult to predict and are subject to future events that may alter our assumptions, we may be required to recognize future impairment losses on our investments in unconsolidated affiliates.

Sales of Real Estate
 
For sales transactions meeting the requirements for full profit recognition, the related assets and liabilities are removed from the balance sheet and the resultant gain or loss is recorded in the period the transaction closes. For sales transactions with continuing involvement after the sale, if the continuing involvement with the property is limited by the terms of the sales contract, profit is recognized at the time of sale and is reduced by the maximum exposure to loss related to the nature of the continuing involvement. Sales to entities in which we have or receive an interest are accounted for using partial sale accounting.
 
For transactions that do not meet the criteria for a sale, we evaluate the nature of the continuing involvement, including put and call provisions, if present, and account for the transaction as a financing arrangement, profit-sharing arrangement, leasing arrangement or other alternate method of accounting, rather than as a sale, based on the nature and extent of the continuing involvement. Some transactions may have numerous forms of continuing involvement. In those cases, we determine which method is most appropriate based on the substance of the transaction.

Rental and Other Revenues
 
Minimum contractual rents from leases are recognized on a straight-line basis over the terms of the respective leases. This means that, with respect to a particular lease, actual amounts billed in accordance with the lease during any given period may be higher or lower than the amount of rental revenue recognized for the period. Straight-line rental revenue is commenced when the customer assumes control of the leased premises. Accrued straight-line rents receivable represents the amount by which straight-line rental revenue exceeds rents currently billed in accordance with lease agreements. Contingent rental revenue, such as percentage rent, is accrued when the contingency is removed. Termination fee income is recognized at the later of when the customer has vacated the space or the lease has expired and a fully executed lease termination agreement has been delivered, the amount of the fee is determinable and collectability of the fee is reasonably assured. Rental revenue reductions related to co-tenancy lease provisions, if any, are accrued when events have occurred that trigger such provisions.

1.    Description of Business and Significant Accounting Policies – Continued

Cost recovery income is determined on a calendar year and a lease-by-lease basis. The most common types of cost recovery income in our leases are common area maintenance (“CAM”) and real estate taxes, for which a customer typically pays its pro-rata share of operating and administrative expenses and real estate taxes in excess of the costs incurred during a contractually specified base year. The computation of cost recovery income is complex and involves numerous judgments, including the interpretation of lease provisions. Leases are not uniform in dealing with such cost recovery income and there are many variations in the computation. Many customers make monthly fixed payments of CAM, real estate taxes and other cost reimbursement items. We accrue income related to these payments each month. We make quarterly accrual adjustments, positive or negative, to cost recovery income to adjust the recorded amounts to our best estimate of the final annual amounts to be billed and collected. After the end of the calendar year, we compute each customer's final cost recovery income and, after considering amounts paid by the customer during the year, issue a bill or credit for the appropriate amount to the customer. The differences between the amounts billed less previously received payments and the accrual adjustment are recorded as increases or decreases to cost recovery income when the final bills are prepared, which occurs during the first half of the subsequent year.
 
Allowance for Doubtful Accounts
 
Accounts receivable, accrued straight-line rents receivable and mortgages and notes receivable are reduced by an allowance for amounts that may become uncollectible in the future. We regularly evaluate the adequacy of our allowance for doubtful accounts. The evaluation primarily consists of reviewing past due account balances and considering such factors as the credit quality of our customer, historical trends of the customer and changes in customer payment terms. Additionally, with respect to customers in bankruptcy, we estimate the probable recovery through bankruptcy claims and adjust the allowance for amounts deemed uncollectible. If our assumptions regarding the collectability of receivables prove incorrect, we could experience losses in excess of our allowance for doubtful accounts. The allowance and its related receivable are written-off when we have concluded there is a low probability of collection and we have discontinued collection efforts.

Discontinued Operations
 
Subsequent to the early adoption of the Financial Accounting Standards Board ("FASB") accounting standards update on the presentation of discontinued operations beginning in April 2014, properties that are sold or classified as held for sale are classified as discontinued operations provided that the disposal represents a strategic shift that has (or will have) a major effect on our operations and financial results. Interest expense is included in discontinued operations if a related loan securing the sold property is to be paid off or assumed by the buyer in connection with the sale. If the property is sold to a joint venture in which we retain an interest, the property will not be accounted for as a discontinued operation due to our significant ongoing interest in the operations through our joint venture interest. If we are retained to provide property management, leasing and/or other services for the property owner after the sale, the property generally will be accounted for as a discontinued operation because the expected cash flows related to our management and leasing activities generally will not be significant in comparison to the cash flows from the property prior to sale.

Lease Incentives
 
Lease incentive costs, which are payments made to or on behalf of a customer as an incentive to sign a lease, are capitalized in deferred financing and leasing costs and amortized on a straight-line basis over the respective lease terms as a reduction of rental revenues.

Investments in Unconsolidated Affiliates
 
We account for our investments in less than majority owned joint ventures, partnerships and limited liability companies using the equity method of accounting when our interests represent a general partnership interest but substantive participating rights or substantive kick out rights have been granted to the limited partners or when our interests do not represent a general partnership interest and we do not control the major operating and financial policies of the entity. These investments are initially recorded at cost in investments in unconsolidated affiliates and are subsequently adjusted for our share of earnings and cash contributions and distributions. To the extent our cost basis at formation of the joint venture is different than the basis reflected at the joint venture level, the basis difference is amortized over the life of the related assets and included in our share of equity in earnings of unconsolidated affiliates.

1.    Description of Business and Significant Accounting Policies – Continued

Cash Equivalents
 
We consider highly liquid investments with an original maturity of three months or less when purchased to be cash equivalents.

Restricted Cash
 
Restricted cash represents cash deposits that are legally restricted or held by third parties on our behalf, such as construction-related escrows, property disposition proceeds set aside and designated or intended to fund future tax-deferred exchanges of qualifying real estate investments, escrows and reserves for debt service, real estate taxes and property insurance established pursuant to certain mortgage financing arrangements and any deposits made with lenders to unencumber secured properties.

Redeemable Common Units and Preferred Units
 
Limited partners holding Common Units other than the Company (“Redeemable Common Units”) have the right to put any and all of the Common Units to the Operating Partnership and the Company has the right to put any and all of the Preferred Units to the Operating Partnership in exchange for their liquidation preference plus accrued and unpaid distributions in the event of a corresponding redemption by the Company of the underlying Preferred Stock. Consequently, these Redeemable Common Units and Preferred Units are classified outside of permanent partners’ capital in the Operating Partnership's accompanying balance sheets. The recorded value of the Redeemable Common Units is based on fair value at the balance sheet date as measured by the closing price of Common Stock on that date multiplied by the total number of Redeemable Common Units outstanding. The recorded value of the Preferred Units is based on their redemption value.
 
Income Taxes
 
The Company has elected and expects to continue to qualify as a REIT under Sections 856 through 860 of the Internal Revenue Code of 1986, as amended (the “Code”). A corporate REIT is a legal entity that holds real estate assets and, through the payment of dividends to stockholders, is generally permitted to reduce or avoid the payment of federal and state income taxes at the corporate level. To maintain qualification as a REIT, the Company is required to pay dividends to its stockholders equal to at least 90.0% of its annual REIT taxable income, excluding net capital gains. The partnership agreement requires the Operating Partnership to pay economically equivalent distributions on outstanding Common Units at the same time that the Company pays dividends on its outstanding Common Stock.

Other than income taxes related to its taxable REIT subsidiary, the Operating Partnership does not reflect any federal income taxes in its financial statements, since as a partnership the taxable effects of its operations are attributed to its partners. The Operating Partnership does record state income tax for states that tax partnership income directly.
 
We conduct certain business activities through a taxable REIT subsidiary, as permitted under the Code. The taxable REIT subsidiary is subject to federal, state and local income taxes on its taxable income. We record provisions for income taxes based on its income recognized for financial statement purposes, including the effects of temporary differences between such income and the amount recognized for tax purposes.
 
Concentration of Credit Risk
 
At December 31, 2015, properties that we wholly own were leased to 1,910 customers. The geographic locations that comprise greater than 10.0% of our rental and other revenues are Raleigh, NC, Atlanta, GA, Tampa, FL and Nashville, TN. Our customers engage in a wide variety of businesses. No single customer of the properties that we wholly own generated more than 6.0% of our consolidated revenues during 2015.
 
We maintain our cash and cash equivalents and our restricted cash at financial or other intermediary institutions. The combined account balances at each institution may exceed FDIC insurance coverage and, as a result, there is a concentration of credit risk related to amounts on deposit in excess of FDIC insurance coverage. Additionally, from time to time in connection with tax-deferred 1031 transactions, our restricted cash balances may be commingled with other funds being held by any such intermediary institution, which would subject our balance to the credit risk of the institution.


1.    Description of Business and Significant Accounting Policies – Continued
 
Derivative Financial Instruments
 
We borrow funds at a combination of fixed and variable rates. Borrowings under our revolving credit facility, bridge facility and bank term loans bear interest at variable rates. Our long-term debt typically bears interest at fixed rates. Our interest rate risk management objectives are to limit generally the impact of interest rate changes on earnings and cash flows and to lower our overall borrowing costs. To achieve these objectives, from time to time, we enter into interest rate hedge contracts such as collars, swaps, caps and treasury lock agreements in order to mitigate our interest rate risk with respect to various debt instruments. We generally do not hold or issue these derivative contracts for trading or speculative purposes. The interest rate on all of our variable rate debt is generally adjusted at one or three month intervals, subject to settlements under these interest rate hedge contracts.

Interest rate swaps involve the receipt of variable-rate amounts from a counterparty in exchange for making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in accumulated other comprehensive loss ("AOCL") and is subsequently reclassified into interest expense in the period that the hedged forecasted transaction affects earnings.
 
We account for terminated derivative instruments by recognizing the related accumulated comprehensive income/loss balance in current earnings, unless the hedged forecasted transaction continues as originally planned, in which case we continue to amortize the accumulated comprehensive income/loss into earnings over the originally designated hedge period.

Earnings Per Share and Per Unit
 
Basic earnings per share of the Company is computed by dividing net income available for common stockholders by the weighted Common Shares outstanding - basic. Diluted earnings per share is computed by dividing net income available to common stockholders plus noncontrolling interests in the Operating Partnership by the weighted Common Shares outstanding - basic plus the dilutive effect of options, warrants and convertible securities outstanding, including Common Units, using the treasury stock method. Weighted Common Shares outstanding - basic includes all unvested restricted stock where dividends received on such restricted stock are non-forfeitable.
 
Basic earnings per unit of the Operating Partnership is computed by dividing net income available for common unitholders by the weighted Common Units outstanding - basic. Diluted earnings per unit is computed by dividing net income available to common unitholders by the weighted Common Units outstanding - basic plus the dilutive effect of options and warrants, using the treasury stock method. Weighted Common Units outstanding - basic includes all of the Company's unvested restricted stock where dividends received on such restricted stock are non-forfeitable.
 
Recently Issued Accounting Standards
 
The FASB recently issued an accounting standards update that requires the use of a new five-step model to recognize revenue from customer contracts. The five-step model requires that we identify the contract with the customer, identify the performance obligations in the contract, determine the transaction price, allocate the transaction price to the performance obligations in the contract and recognize revenue when we satisfy the performance obligations. We will also be required to disclose information regarding the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. The accounting standards update is required to be adopted in 2018. Retrospective application is required either to all periods presented or with the cumulative effect of initial adoption recognized in the period of adoption. We are in the process of evaluating this accounting standards update.
 
The FASB recently issued an accounting standards update that amends consolidation requirements. The amendments significantly change the consolidation analysis required under GAAP and will require companies to reevaluate all previous consolidation conclusions. The accounting standards update is required to be adopted in 2016. We are in the process of evaluating this accounting standards update.
 
The FASB recently issued an accounting standards update that requires debt issuance costs related to a recognized debt liability to be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The accounting standards update is required to be adopted in 2016. Retrospective application is required. We do not expect such adoption to have a material effect on the balance sheet.
v3.3.1.900
Real Estate Assets
 12 Months Ended
Dec. 31, 2015
Real Estate [Abstract]  
Real Estate Assets
Real Estate Assets

Acquisitions

During 2015, we acquired:

•
a building in Tampa, FL encompassing 528,000 rentable square feet for a net purchase price of $113.5 million and an adjacent land parcel for a purchase price of $2.2 million;

•
two buildings in Atlanta, GA encompassing 896,000 rentable square feet for a net purchase price of $290.3 million;

•
land in Atlanta, GA for a purchase price and related transaction costs of $5.2 million (including contingent consideration of $0.9 million); and

•
our Highwoods DLF 98/29, LLC joint venture partner’s 77.2% interest in a building in Orlando, FL encompassing 168,000 rentable square feet in exchange for the assumption of secured debt recorded at fair value of $19.3 million (see Note 6).

We expensed $1.0 million of acquisition costs (included in general and administrative expenses) in 2015 related to these acquisitions. The assets acquired and liabilities assumed were recorded at fair value as determined by management based on information available at the acquisition date and on current assumptions as to future operations.

The following table sets forth a summary of the fair value of the major assets acquired and liabilities assumed relating to the above-referenced acquisition of two buildings in Atlanta, GA during 2015:

 
Total
Purchase Price Allocation
Real estate assets
$
275,639

Acquisition-related intangible assets (in deferred financing and leasing costs)
23,722

Acquisition-related below market lease liabilities (in accounts payable, accrued expenses and other liabilities)
(9,076
)
Total allocation
$
290,285


 
The following table sets forth the Company's revenues and net income, adjusted for interest expense, straight-line rental income, depreciation and amortization related to purchase price allocations and acquisition costs, assuming the above-referenced acquisition of two buildings in Atlanta, GA during 2015 had been completed as of January 1, 2014:
 
 
Year Ended December 31,
 
2015
 
2014
 
(unaudited)
Pro forma revenues
$
626,067

 
$
584,650

Pro forma net income
$
103,485

 
$
113,284

Pro forma net income available for common stockholders
$
96,797

 
$
105,769

Pro forma earnings per share - basic
$
1.03

 
$
1.17

Pro forma earnings per share - diluted
$
1.02

 
$
1.17



The above-referenced acquisition of two buildings in Atlanta, GA during 2015 resulted in revenues of $7.3 million and net loss of $1.2 million recorded in the Consolidated Statements of Income for the year ended December 31, 2015.

2.     Real Estate Assets - Continued
 
During 2014, we acquired:

•
a building in Orlando, FL encompassing 246,000 rentable square feet for a purchase price of $67.4 million;

•
our partner's 50.0% interest in a building owned by our consolidated Highwoods-Markel Associates, LLC joint venture in Richmond, VA encompassing 66,000 rentable square feet for a purchase price of $4.2 million, which is recorded as acquisition of noncontrolling interest in consolidated affiliate;

•
land in Nashville, TN for a purchase price and related transaction costs of $15.8 million (including contingent consideration of $3.3 million); and

•
a building in Raleigh, NC encompassing 374,000 rentable square feet for a purchase price of $83.8 million.

We expensed $0.5 million of acquisition costs (included in general and administrative expenses) in 2014 related to these acquisitions. The assets acquired and liabilities assumed were recorded at fair value as determined by management based on information available at the acquisition date and on current assumptions as to future operations.  

During 2013, we acquired:

•
our joint venture partner's 60.0% interest in our HIW-KC Orlando, LLC joint venture, which owned five buildings in Orlando, FL encompassing 1.3 million rentable square feet, for a net purchase price of $112.8 million. We previously accounted for our 40.0% interest in this joint venture using the equity method of accounting. The assets and liabilities of the joint venture are now wholly owned and are recorded in our Consolidated Financial Statements, including assets recorded at fair value of $188.0 million and secured debt recorded at fair value of $127.9 million, with an effective interest rate of 3.11%. This debt has since been repaid. As a result of acquiring a controlling interest in this joint venture, our previously held equity interest was remeasured at a fair value of $75.2 million resulting in a gain of $7.5 million, which represents the difference between the fair market value of our previously held equity interest and the carrying value of our investment on the date of acquisition. The fair market value of our previously held equity interest was determined by management based on information available at the acquisition date and on current assumptions as to future operations;

•
a building in Nashville, TN encompassing 520,000 rentable square feet for a net purchase price of $150.1 million;

•
our Highwoods DLF 97/26 DLF 99/32, LP joint venture partner's 57.0% interest in two buildings in Atlanta, GA encompassing 505,000 rentable square feet for a net purchase price of $44.5 million, including the assumption of secured debt recorded at fair value of $37.6 million, with an effective interest rate of 3.34%. This debt has since been repaid;

•
a building in Atlanta, GA encompassing 553,000 rentable square feet for a purchase price of $140.1 million;

•
two buildings in Tampa, FL encompassing 372,000 rentable square feet for a purchase price of $52.5 million;

•
two buildings in Greensboro, NC encompassing 195,000 rentable square feet for a purchase price of $30.8 million; and

•
land in Memphis, TN for a purchase price of $4.8 million.
 
We expensed $1.8 million of acquisition costs (included in general and administrative expenses) in 2013 related to these acquisitions. The assets acquired and liabilities assumed were recorded at fair value as determined by management based on information available at the acquisition date and on current assumptions as to future operations.  
 

2.     Real Estate Assets - Continued
 
The following table sets forth a summary of the fair value of the major assets acquired and liabilities assumed relating to the above-referenced acquisitions of a building in Orlando, FL and Nashville, TN and the 553,000 rentable square foot building in Atlanta, GA during 2013:
 
 
Total
Purchase Price Allocation
Real estate assets
$
445,396

Acquisition-related intangible assets (in deferred financing and leasing costs)
50,595

Mortgages and notes payable
(127,891
)
Acquisition-related below market lease liabilities (in accounts payable, accrued expenses and other liabilities)
(17,818
)
Total allocation
$
350,282



The following table sets forth the Company's revenues and net income, adjusted for interest expense, straight-line rental income, depreciation and amortization related to purchase price allocations, acquisition costs and equity in earnings of unconsolidated affiliates previously recognized as income assuming the above-referenced acquisitions of buildings in Orlando, FL, Nashville, TN and Atlanta, GA during 2013 had been completed as of January 1, 2012:
 
 
Year Ended December 31,
 
2013
 
(unaudited)
Pro forma revenues
$
538,890

Pro forma net income
$
121,754

Pro forma net income available for common stockholders
$
113,606

Pro forma earnings per share - basic
$
1.33

Pro forma earnings per share - diluted
$
1.33


 
The above-referenced acquisitions of buildings in Orlando, FL, Nashville, TN and Atlanta, GA during 2013 resulted in revenues of $25.0 million and net losses of $0.2 million recorded in the Consolidated Statements of Income for the year ended December 31, 2013.

Dispositions

During 2015, we sold a total of three buildings and land for an aggregate sale price of $27.8 million and recorded aggregate gains on disposition of property of $9.2 million, net of $0.5 million in taxes payable by our taxable REIT subsidiary.

During 2014, we sold a total of 33 buildings and land for an aggregate sale price of $187.3 million (before closing credits to buyer of $8.6 million for unfunded building and tenant improvements and $2.9 million for free rent) and recorded aggregate gains on disposition of property of $44.4 million.

During 2013, we sold a total of 47 buildings and land for an aggregate sale price of $260.5 million (before closing credits to buyer of $3.6 million for unfunded tenant improvements and after $2.0 million in closing credits to buyer for free rent) and recorded aggregate gains on disposition of discontinued operations of $62.3 million. Additionally, in connection with the disposition of a building in 2012, we had the right to receive additional cash consideration of up to $1.5 million upon the satisfaction of a certain post-closing requirement. The post-closing requirement was satisfied and the cash consideration was received during 2013. Accordingly, we recognized $1.5 million in additional gain on disposition of discontinued operations in 2013.

2.     Real Estate Assets - Continued

Impairments

During 2014, we recorded an impairment of real estate assets of $0.6 million on a building in Greensboro, NC. During 2013, we recorded impairments of real estate assets of $1.1 million on four buildings in a single office park in Winston-Salem, NC and $1.1 million on seven buildings in Atlanta, GA. These impairments were due to a change in the assumed timing of future dispositions and leasing assumptions, which reduced the future expected cash flows from the impaired properties.
v3.3.1.900
Mortgages and Notes Receivable
 12 Months Ended
Dec. 31, 2015
Receivables [Abstract]  
Mortgages and Notes Receivable
Mortgages and Notes Receivable

Mortgages and notes receivable were $2.1 million and $13.1 million at December 31, 2015 and 2014, respectively.

During 2010, we provided seller financing in conjunction with two disposition transactions. We accounted for these dispositions using the installment method, whereby a gain on disposition of property was deferred until the seller financing was repaid. During 2014, the $16.5 million of seller financing was fully repaid and the resultant $0.4 million gain on disposition of property was recorded.

During 2012, we provided $8.6 million of secured acquisition financing to a third party. We also agreed to loan such third party $8.4 million on a secured basis to fund future infrastructure development. During 2015, $9.9 million of the secured acquisition financing was repaid, including accrued interest. Previously, we concluded this arrangement to be an interest in a variable interest entity. However, since we did not have the power to direct matters that most significantly impact the activities of the entity, we did not qualify as the primary beneficiary. Accordingly, the entity was not consolidated. Our risk of loss with respect to this arrangement was limited to the carrying value of the mortgage receivable.

We evaluate the ability to collect our mortgages and notes receivable by monitoring the leasing statistics and/or market fundamentals of these assets. As of December 31, 2015, our mortgages and notes receivable were not in default and there were no other indicators of impairment.
v3.3.1.900
Investments In and Advances To Affiliates
 12 Months Ended
Dec. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]  
Investments In and Advances To Affiliates
Investments in and Advances to Affiliates

Unconsolidated Affiliates

We have equity interests of up to 50.0% in various joint ventures with unrelated third parties that are accounted for using the equity method of accounting because we have the ability to exercise significant influence over their operating and financial policies.

The following table sets forth our ownership in unconsolidated affiliates at December 31, 2015:

Joint Venture
 
Location of Properties
 
Ownership
Interest
Concourse Center Associates, LLC
 
Greensboro, NC
 
50.0%
Plaza Colonnade, LLC
 
Kansas City, MO
 
50.0%
Highwoods DLF 97/26 DLF 99/32, LP
 
Orlando, FL
 
42.9%
Kessinger/Hunter & Company, LC
 
Kansas City, MO
 
26.5%
Highwoods DLF Forum, LLC
 
Raleigh, NC
 
25.0%
Highwoods DLF 98/29, LLC
 
Orlando, FL
 
22.8%
4600 Madison Associates, LP
 
Kansas City, MO
 
12.5%


4.    Investments in and Advances to Affiliates – Continued

The following table sets forth the summarized balance sheets of our unconsolidated affiliates:

 
December 31,
 
2015
 
2014
 
 
 
(as revised)
Balance Sheets:
 
 
 
Assets:
 
 
 
Real estate assets, net
$
163,852

 
$
239,142

All other assets, net
53,511

 
61,290

Total Assets
$
217,363

 
$
300,432

Liabilities and Partners’ or Shareholders’ Equity:
 
 
 
Mortgages and notes payable (1)
$
141,580

 
$
191,587

All other liabilities
6,547

 
11,967

Partners’ or shareholders’ equity
69,236

 
96,878

Total Liabilities and Partners’ or Shareholders’ Equity
$
217,363

 
$
300,432

Our share of historical partners’ or shareholders’ equity
$
21,022

 
$
30,784

Advances to unconsolidated affiliates
448

 
20,864

Difference between cost of investments and the net book value of underlying net assets
(794
)
 
(963
)
Carrying value of investments in and advances to unconsolidated affiliates
$
20,676

 
$
50,685

Our share of unconsolidated non-recourse mortgage debt (1)
$
49,242

 
$
60,972

__________
(1)
Our share of scheduled future principal payments, including amortization, due on mortgages and notes payable at December 31, 2015 is as follows:
2016
$
4,407

2017
20,817

2018
19,580

2019
563

2020
562

Thereafter
3,313

 
$
49,242


 
All of this joint venture debt is non-recourse to us except in the case of customary exceptions pertaining to such matters as misuse of funds, environmental conditions, material misrepresentations and voluntary or uncontested involuntary bankruptcy events.

4.    Investments in and Advances to Affiliates – Continued

The following table sets forth the summarized income statements of our unconsolidated affiliates:
 
Year Ended December 31,
 
2015
 
2014
 
2013
Income Statements:
 
 
 
 
 
Rental and other revenues
$
48,118

 
$
50,514

 
$
82,168

Expenses:
 
 
 
 
 
Rental property and other expenses
22,721

 
25,159

 
41,284

Depreciation and amortization
12,257

 
13,310

 
20,928

Impairments of real estate assets
—

 
—

 
20,077

Interest expense
7,196

 
8,847

 
14,994

Total expenses
42,174

 
47,316

 
97,283

Income/(loss) before disposition of property
5,944

 
3,198

 
(15,115
)
Gains on disposition of property
18,181

 
2,998

 
20,501

Net income
$
24,125

 
$
6,196

 
$
5,386



The following summarizes additional information related to certain of our unconsolidated affiliates:

- Board of Trade Investment Company ("Board of Trade")

During 2014, Board of Trade sold a building to an unrelated third party for gross proceeds of $8.3 million and recorded a gain of $1.9 million. As our cost basis was different from the basis reflected at the entity level, we recorded a net impairment charge on our investment of $0.4 million. This charge represented the other-than-temporary decline in the fair value below the carrying value of our investment. Our 49.0% interest in Board of Trade was redeemed in exchange for $4.7 million in cash.

- Highwoods KC Glenridge Office, LLC ("KC Glenridge Office") and Highwoods KC Glenridge Land, LLC ("KC Glenridge Land")

During 2015, KC Glenridge Office and KC Glenridge Land collectively sold two buildings and land to an unrelated third party for an aggregate sale price of $24.5 million (before closing credits to buyer of $0.3 million for unfunded tenant improvements) and recorded gains on disposition of property of $2.4 million. We recorded $0.9 million as our share of these gains through equity in earnings of unconsolidated affiliates.

During 2014, KC Glenridge Office paid at maturity the remaining $14.9 million balance on a secured mortgage loan with an effective interest rate of 4.84%.

- HIW-KC Orlando, LLC

See Note 2 for a description of our acquisition of our partner's 60.0% equity interest in this joint venture during 2013.

4.    Investments in and Advances to Affiliates – Continued

- Lofts at Weston, LLC ("Weston Lofts")

During 2011, we and Ravin Partners, LLC (“Ravin”) formed Weston Lofts, in which we had a 50.0% ownership interest. We contributed 15.0 acres of land at an agreed upon value of $2.4 million to this joint venture, and Ravin contributed $1.2 million in cash and agreed to guarantee the joint venture's development loan. The joint venture then distributed $1.2 million to us and we recorded a gain of $0.3 million on this transaction. Ravin was the developer, manager and leasing agent and received customary fees from the joint venture, which constructed 215 residential units at a total cost of $25.9 million. During 2013, Weston Lofts sold the 215 residential units to an unrelated third party for gross proceeds of $38.3 million and recorded a gain of $12.2 million. As a result, we received aggregate net distributions of $9.4 million and recorded our share of the gain of $3.2 million, which is net of $1.7 million in taxes incurred by our taxable REIT subsidiary, in equity in earnings of unconsolidated affiliates. Our share of the gain was less than 50.0% due to Ravin's preferred return as the developer.

- Highwoods DLF 97/26 DLF 99/32, LP (“DLF II”)
 
During 2015, DLF II sold a building to an unrelated third party for a sale price of $7.0 million and recorded a gain on disposition of property of $2.1 million. We recorded $1.1 million as our share of this gain through equity in earnings of unconsolidated affiliates.

See Note 2 for a description of our acquisition of two buildings in Atlanta, GA from DLF II during 2013.
 
During 2013, DLF II sold a building to an unrelated third party for a sale price of $10.1 million (after $0.3 million in closing credits to buyer for free rent) and recorded a gain on disposition of property of less than $0.1 million. As our cost basis was different from the basis reflected at the joint venture level, we recorded $0.4 million of gain through equity in earnings of unconsolidated affiliates.
 
- Kessinger/Hunter & Company, LC ("Kessinger/Hunter")
 
Kessinger/Hunter, which is managed by our joint venture partner, provides leasing services, among other things, to certain buildings that we wholly own in Kansas City, MO in exchange for customary fees from us. Kessinger/Hunter received $0.3 million, $0.6 million and $0.2 million from us for these services in 2015, 2014 and 2013, respectively.
 
- Highwoods DLF Forum, LLC (“Forum”)
 
During 2013, Forum obtained a $71.7 million, five-year secured mortgage loan from a third party lender, bearing a floating interest rate of LIBOR plus 190 basis points, which was used by the joint venture to repay a secured loan at maturity to a third party lender. This loan is scheduled to mature in November 2018.

- Highwoods DLF 98/29, LLC (“DLF I”)

See Note 2 for a description of our acquisition of a building in Orlando, FL from DLF I during 2015. The joint venture recorded a gain on disposition of property of $13.7 million. Our share of $3.1 million was recorded as a reduction to real estate assets.

During 2014, DLF I sold a building to an unrelated third party for a sale price of $13.7 million (before $0.4 million in closing credits to buyer for free rent) and recorded a gain on disposition of property of $1.0 million. We recorded $0.2 million as our share of this gain through equity in earnings of unconsolidated affiliates.

During 2013, DLF I sold a building to an unrelated third party for a sale price of $5.9 million (after $0.1 million in closing credits to buyer for free rent) and recorded a gain on disposition of discontinued operations of less than $0.1 million. We recorded less than $0.1 million as our share of this gain through equity in earnings of unconsolidated affiliates.

4.    Investments in and Advances to Affiliates – Continued

During 2013, DLF I recorded impairments of real estate assets of $20.1 million on buildings in Orlando, FL, Atlanta, GA and Charlotte, NC. We recorded $4.5 million as our share of these impairment charges through equity in earnings of unconsolidated affiliates. These impairments were due to a change in the assumed timing of future dispositions and/or leasing assumptions, which reduced the future expected cash flows from the impaired properties.

- Other Activities
 
We receive development, management and leasing fees for services provided to certain of our joint ventures. These fees are recognized in income to the extent of our respective joint venture partner's interest. During the years ended December 31, 2015, 2014 and 2013, we recognized $1.4 million, $1.2 million and $2.9 million, respectively, of development/construction, management and leasing fees from our unconsolidated joint ventures. At December 31, 2015 and 2014, we had receivables of $0.1 million and $0.5 million, respectively, related to these fees in accounts receivable.
 
Consolidated Affiliates
 
The following summarizes our consolidated affiliates:

- Highwoods-Markel Associates, LLC (“Markel”)

We have a 50.0% ownership interest in Markel. We are the manager and leasing agent for Markel's properties, which are located in Richmond, VA in exchange for customary management and leasing fees. We consolidate Markel since we are the managing member and control the major operating and financial policies of the entity. As controlling member, we have an obligation to cause this property-owning entity to distribute proceeds of liquidation to the noncontrolling interest member in these partially owned properties only if the net proceeds received by the entity from the sale of Markel's assets warrant a distribution as determined by the governing agreement. We estimate the value of noncontrolling interest distributions would have been $19.4 million had the entity been liquidated at December 31, 2015. This estimated settlement value is based on the fair value of the underlying properties which is based on a number of assumptions that are subject to economic and market uncertainties including, among others, demand for space, competition for customers, changes in market rental rates and costs to operate each property. If the entity's underlying assets are worth less than the underlying liabilities on the date of such liquidation, we would have no obligation to remit any consideration to the noncontrolling interest holder.

See Note 2 for a description of our acquisition of the noncontrolling member's 50.0% interest in a building owned by Markel during 2014.

- Harborview
 
We had a 20.0% interest in Harborview, which had been accounted for as a financing obligation since our partner had the right to put its 80.0% equity interest back to us any time prior to September 11, 2015. During 2012, we also provided a three-year $20.8 million interest-only secured loan to Harborview that was scheduled to mature in September 2015.

During the second quarter of 2015, as a result of our partner’s irrevocable exercise of a buy-sell provision in our Harborview joint venture agreement, our partner’s right to put its 80.0% equity interest back to us became no longer exercisable, which resulted in recording the original contribution transaction as a partial sale. As a result, we were required to begin accounting for Harborview using the equity method of accounting. See Note 1.

During the third quarter of 2015, we sold our 20.0% interest in Harborview to our partner for net proceeds of $6.9 million and recorded a $4.2 million gain on disposition of investment in unconsolidated affiliate. The $20.8 million interest-only secured loan previously provided by us to Harborview was paid in full upon consummation of the sale.
v3.3.1.900
Intangible Assets and Below Market Leaes Liabilities
 12 Months Ended
Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets and Below Market Lease Liabilities
Intangible Assets and Below Market Lease Liabilities

The following table sets forth total intangible assets and acquisition-related below market lease liabilities, net of accumulated amortization:

 
December 31,
 
2015
 
2014
Assets:
 
 
 
Deferred financing costs
$
18,449

 
$
19,478

Less accumulated amortization
(8,551
)
 
(7,953
)
 
9,898

 
11,525

Deferred leasing costs (including lease incentives and above market lease and in-place lease acquisition-related intangible assets)
346,937

 
311,092

Less accumulated amortization
(115,172
)
 
(100,169
)
 
231,765

 
210,923

Deferred financing and leasing costs, net
$
241,663

 
$
222,448

 
 
 
 
Liabilities (in accounts payable, accrued expenses and other liabilities):
 
 
 
Acquisition-related below market lease liabilities
$
63,830

 
$
55,783

Less accumulated amortization
(17,927
)
 
(13,548
)
 
$
45,903

 
$
42,235


The following table sets forth amortization of intangible assets and below market lease liabilities:

 
Year Ended December 31,
 
2015
 
2014
 
2013
Amortization of deferred financing costs
$
3,645

 
$
3,082

 
$
3,802

Amortization of deferred leasing costs and acquisition-related intangible assets (in depreciation and amortization)
$
43,332

 
$
38,144

 
$
35,941

Amortization of lease incentives (in rental and other revenues)
$
1,493

 
$
1,419

 
$
1,361

Amortization of acquisition-related intangible assets (in rental and other revenues)
$
5,062

 
$
4,549

 
$
3,676

Amortization of acquisition-related intangible assets (in rental property and other expenses)
$
557

 
$
557

 
$
556

Amortization of acquisition-related below market lease liabilities (in rental and other revenues)
$
(7,065
)
 
$
(6,129
)
 
$
(5,316
)


5.    Intangible Assets and Below Market Lease Liabilities - Continued

The following table sets forth scheduled future amortization of intangible assets and below market lease liabilities:

Years Ending December 31,
 
Amortization
of Deferred Financing
Costs
 
Amortization
of Deferred Leasing Costs and Acquisition-Related Intangible Assets (in Depreciation and Amortization)
 
Amortization
of Lease Incentives (in Rental and Other Revenues)
 
Amortization
of Acquisition-Related Intangible Assets (in Rental and Other Revenues)
 
Amortization of Acquisition-Related Intangible Assets (in Rental Property and Other Expenses)
 
Amortization
of Acquisition-Related Below Market Lease Liabilities (in Rental and Other Revenues)
2016
 
$
3,185

 
$
45,903

 
$
1,254

 
$
3,808

 
$
553

 
$
(6,969
)
2017
 
2,693

 
38,580

 
1,175

 
2,671

 
553

 
(6,626
)
2018
 
1,530

 
31,827

 
1,076

 
1,709

 
553

 
(6,231
)
2019
 
1,116

 
26,161

 
880

 
1,306

 
553

 
(5,739
)
2020
 
804

 
21,584

 
652

 
989

 
525

 
(5,410
)
Thereafter
 
570

 
45,008

 
1,883

 
2,562

 
—

 
(14,928
)
 
 
$
9,898

 
$
209,063

 
$
6,920

 
$
13,045

 
$
2,737

 
$
(45,903
)
Weighted average remaining amortization periods as of December 31, 2015 (in years)
 
3.9

 
6.6

 
7.4

 
6.1

 
5.0

 
7.9



The following table sets forth the intangible assets acquired and below market lease liabilities assumed as a result of 2015 acquisition activity:

 
 
Acquisition-Related Intangible Assets (amortized in Rental and Other Revenues)
 
Acquisition-Related Intangible Assets (amortized in Depreciation and Amortization)
 
Acquisition-Related Below Market Lease Liabilities (amortized in Rental and Other Revenues)
Amount recorded at acquisition
 
$
3,051

 
$
35,534

 
$
(10,733
)
Weighted average remaining amortization periods as of December 31, 2015 (in years)
 
5.0

 
5.7

 
9.6
v3.3.1.900
Mortgages and Notes Payable
 12 Months Ended
Dec. 31, 2015
Debt Disclosure [Abstract]  
Mortgages and Notes Payable
Mortgages and Notes Payable
 
Our mortgages and notes payable consist of the following:
 
 
December 31,
 
2015
 
2014
Secured indebtedness: (1)
 
 
 
5.17% (6.43% effective rate) mortgage loan due 2015 (2)
$
—

 
$
39,324

6.88% mortgage loans due 2016 (3)
—

 
107,556

7.50% mortgage loan due 2016
43,852

 
44,501

5.10% (4.22% effective rate) mortgage loan due 2017 (4)
112,230

 
115,229

6.11% (5.36% effective rate) mortgage loan due 2017 (5)
19,199

 
—

8.15% (7.65% effective rate) mortgage loan due 2016 (6)
—

 
6,258

 
175,281

 
312,868

Unsecured indebtedness:
 
 
 
5.85% (5.88% effective rate) notes due 2017 (7)
379,544

 
379,427

7.50% notes due 2018
200,000

 
200,000

3.20% (3.363% effective rate) notes due 2021 (8)
297,639

 
297,207

3.625% (3.752% effective rate) notes due 2023 (9)
248,150

 
247,887

Variable rate term loan due 2019 (10)
200,000

 
200,000

Variable rate term loan due 2020 (11)
350,000

 
225,000

Bridge credit facility due 2016 (12)
350,000

 
—

Revolving credit facility due 2018 (13)
299,000

 
209,000

 
2,324,333

 
1,758,521

Total
$
2,499,614

 
$
2,071,389

__________
(1)
Our secured mortgage loans were collateralized by real estate assets with an aggregate undepreciated book value of $314.2 million at December 31, 2015. Our fixed rate mortgage loans generally are either locked out to prepayment for all or a portion of their term or are prepayable subject to certain conditions including prepayment penalties.
(2)
Net of unamortized fair market value discount of $0.4 million as of December 31, 2014. This debt was repaid in 2015.
(3)
This debt was repaid in 2015.
(4)
Net of unamortized fair market value premium of $1.7 million and $2.7 million as of December 31, 2015 and 2014, respectively.
(5)
Net of unamortized fair market value premium of $0.2 million as of December 31, 2015.
(6)
Net of unamortized fair market value premium of $0.1 million as of December 31, 2014. This debt was repaid in 2015.
(7)
Net of unamortized original issuance discount of $0.1 million and $0.3 million as of December 31, 2015 and 2014, respectively.
(8)
Net of unamortized original issuance discount of $2.4 million and $2.8 million as of December 31, 2015 and 2014, respectively.
(9)
Net of unamortized original issuance discount of $1.9 million and $2.1 million as of December 31, 2015 and 2014, respectively.
(10)
The interest rate is 1.44% at December 31, 2015.
(11)
As more fully described in Note 7, we entered into floating-to-fixed interest rate swaps that effectively fix LIBOR for the original $225.0 million portion of this loan. Accordingly, the equivalent fixed rate of this amount is 2.78%. The interest rate on the remaining $125.0 million is 1.41% at December 31, 2015.
(12)
The interest rate is 1.49% at December 31, 2015.
(13)
The interest rate is 1.45% at December 31, 2015.

6.    Mortgages and Notes Payable - Continued

The following table sets forth scheduled future principal payments, including amortization, due on our mortgages and notes payable at December 31, 2015:

Years Ending December 31,
 
Principal Amount
2016
 
$
396,090

2017
 
507,345

2018
 
498,305

2019
 
199,305

2020
 
349,305

Thereafter
 
549,264

 
 
$
2,499,614



Our $475.0 million unsecured revolving credit facility is scheduled to mature in January 2018 and includes an accordion feature that allows for an additional $75.0 million of borrowing capacity subject to additional lender commitments. Assuming no defaults have occurred, we have an option to extend the maturity for two additional six-month periods. The interest rate at our current credit ratings is LIBOR plus 110 basis points and the annual facility fee is 20 basis points. There was $299.0 million and $313.7 million outstanding under our revolving credit facility at December 31, 2015 and January 29, 2016, respectively. At both December 31, 2015 and January 29, 2016, we had $0.2 million of outstanding letters of credit, which reduces the availability on our revolving credit facility. As a result, the unused capacity of our revolving credit facility at December 31, 2015 and January 29, 2016 was $175.8 million and $161.1 million, respectively.

During 2015, we prepaid without penalty a secured mortgage loan with a fair market value of $5.9 million with an effective interest rate of 7.65% that was originally scheduled to mature in February 2016, the remaining $106.0 million balance on a secured mortgage loan with an effective interest rate of 6.88% that was originally scheduled to mature in January 2016 and the remaining $39.4 million balance on a secured mortgage loan with an effective interest rate of 6.43% that was originally scheduled to mature in November 2015. We recorded aggregate losses on debt extinguishment of $0.2 million related to these prepayments. Real estate assets having a gross book value of approximately $293 million became unencumbered in connection with the payoff of these secured loans. We also paid down $4.9 million of secured loan balances through principal amortization during 2015.

During 2015, we obtained a $350.0 million, six-month unsecured bridge facility. The bridge facility is originally scheduled to mature on March 28, 2016. Assuming no defaults have occurred, we have an option to extend the maturity for an additional six-month period. The interest rate on the bridge facility at our current credit ratings is LIBOR plus 110 basis points. There was $350.0 million outstanding under our bridge facility at December 31, 2015. We intend to repay this facility in the first quarter of 2016.

During 2015, we amended our $225.0 million, seven-year unsecured bank term loan, which was scheduled to mature in January 2019. We increased the borrowed amount to $350.0 million. The amended term loan is now scheduled to mature in June 2020 and the interest rate, based on our current credit ratings, was reduced from LIBOR plus 175 basis points to LIBOR plus 110 basis points. We incurred $1.3 million of deferred financing fees in connection with this amendment, which will be amortized along with existing unamortized deferred loan fees over the remaining term of the new loan.

6.    Mortgages and Notes Payable - Continued

During 2015, we acquired our joint venture partner’s 77.2% interest in a building in Orlando, FL. Simultaneously with this acquisition, the joint venture's previously existing mortgage note was restructured into a new $18.0 million first mortgage note and a $10.2 million subordinated note, both of which are scheduled to mature in July 2017. The first mortgage note is interest only with an effective interest rate of 5.36%, payable monthly. The subordinated note has an effective interest rate of 8.6%. Additionally, we deposited $3.0 million into escrow to fund tenant improvements, leasing commissions and building improvements. The first mortgage note and subordinated note can be prepaid at any time commencing October 2016 upon a sale or refinancing of the property. In such event, the subordinated note and any and all accrued interest thereon would be deemed fully satisfied upon payment of a "waterfall payment," if any. Such "waterfall payment" would be a cash payment equal to 50.0% of the amount, if any, by which the net sale proceeds or appraised value in the event of a refinancing exceeds (1) the outstanding principal of the first mortgage note, (2) the funds deposited by us into escrow to fund tenant improvements, leasing commissions and building improvements and (3) a 10.0% return on such funds deposited by us into escrow. The fair value of the first mortgage note was $18.3 million and the fair value of the subordinated note equaled the projected waterfall payment of $1.0 million.
 
During 2014, the Operating Partnership issued $300 million aggregate principal amount of 3.20% Notes due June 15, 2021, less original issue discount of $3.1 million. These notes were priced at 98.983% for an effective yield of 3.363%. Underwriting fees and other expenses were incurred that aggregated $2.4 million; these costs were deferred and will be amortized over the term of the notes.
 
During 2014, we prepaid the remaining $36.9 million balance on a secured mortgage loan with an effective interest rate of 3.34% that was originally scheduled to mature in April 2015. We recorded $0.3 million of loss on debt extinguishment related to this prepayment. We also prepaid without penalty the remaining $123.7 million balance on a secured mortgage loan with an effective interest rate of 3.11% that was originally scheduled to mature in July 2014 and the remaining $7.2 million balance on a secured mortgage loan with an effective interest rate of 3.32% that was originally scheduled to mature in August 2014. We recorded less than $0.1 million of gain on debt extinguishment related to this last prepayment.
 
During 2013, we prepaid without penalty a secured mortgage loan with a fair market value of $67.5 million bearing an effective interest rate of 5.12% that was originally scheduled to mature in January 2014. We also prepaid without penalty the remaining $114.7 million balance on two secured mortgage loans bearing interest at a weighted average rate of 5.75% that were originally scheduled to mature in December 2013. We recorded less than $0.1 million of loss on debt extinguishment related to these prepayments. During 2013, one of our consolidated affiliates also prepaid without penalty the remaining $32.3 million balance on four secured mortgage loans bearing interest at a weighted average rate of 5.79% that were originally scheduled to mature in January 2014.
 
During 2013, we prepaid the remaining $35.0 million balance on a $200.0 million unsecured bank term loan that was originally scheduled to mature in February 2016. We recorded $0.2 million of loss on debt extinguishment related to this prepayment.
 
We are currently in compliance with financial covenants and other requirements with respect to our consolidated debt.
 
Our revolving credit facility, bridge facility and bank term loans require us to comply with customary operating covenants and various financial requirements. Upon an event of default on the revolving credit facility, the lenders having at least 51.0% of the total commitments under the revolving credit facility can accelerate all borrowings then outstanding, and we could be prohibited from borrowing any further amounts under our revolving credit facility, which would adversely affect our ability to fund our operations.
 
The Operating Partnership has $379.5 million carrying amount of 2017 bonds outstanding, $200.0 million carrying amount of 2018 bonds outstanding, $297.6 million carrying amount of 2021 bonds outstanding and $248.2 million carrying amount of 2023 bonds outstanding. The indenture that governs these outstanding notes requires us to comply with customary operating covenants and various financial ratios. The trustee or the holders of at least 25.0% in principal amount of either series of bonds can accelerate the principal amount of such series upon written notice of a default that remains uncured after 60 days.
 
Capitalized Interest
 
Total interest capitalized to development and significant building and tenant improvement projects was $6.9 million, $5.3 million and $2.7 million for the years ended December 31, 2015, 2014 and 2013, respectively.
v3.3.1.900
Derivative Financial Instruments
 12 Months Ended
Dec. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Derivative Financial Instruments
Derivative Financial Instruments

We have six floating-to-fixed interest rate swaps through January 2019 each with respect to an aggregate of $225.0 million LIBOR-based borrowings. These swaps effectively fix the underlying LIBOR rate at a weighted average of 1.678%. The counterparties under the swaps are major financial institutions. The swap agreements contain a provision whereby if we default on any of our indebtedness, if greater than $10.0 million, and which default results in repayment of such indebtedness being, or becoming capable of being, accelerated by the lender, then we could also be declared in default on our swaps. These swaps have been designated and accounted for as cash flow hedges with changes in fair value recorded in other comprehensive income/(loss) each reporting period. No gain or loss was recognized related to hedge ineffectiveness or to amounts excluded from effectiveness testing on our cash flow hedges during the year ended December 31, 2015. We have no collateral requirements related to our interest rate swaps.

Amounts reported in AOCL related to derivatives will be reclassified to interest expense as interest payments are made on our variable rate debt. During 2016, we estimate that $2.3 million will be reclassified to interest expense.

The following table sets forth the fair value of our derivatives:

 
December 31,
 
2015
 
2014
Derivatives:
 
 
 
Derivatives designated as cash flow hedges in accounts payable, accrued expenses and other liabilities:
 
 
 
Interest rate swaps
$
3,073

 
$
2,412



The following table sets forth the effect of our cash flow hedges on AOCL and interest expense:

 
Year Ended December 31,
 
2015
 
2014
 
2013
Derivatives Designated as Cash Flow Hedges:
 
 
 
 
 
Amount of unrealized gains/(losses) recognized in AOCL on derivatives (effective portion):
 
 
 
 
 
Interest rate swaps
$
(4,040
)
 
$
(5,662
)
 
$
5,778

Amount of losses reclassified out of AOCL into contractual interest expense (effective portion):
 
 
 
 
 
Interest rate swaps
$
3,696

 
$
3,777

 
$
3,370
v3.3.1.900
Financing Arrangement
 12 Months Ended
Dec. 31, 2015
Financing Arrangement [Abstract]  
Financing Arrangement
Financing Arrangement

In connection with tax increment financing for a parking garage we constructed in 1999, we are obligated to pay fixed special assessments over a 20-year period ending in 2019. The net present value of these assessments, discounted at the 6.93% interest rate on the underlying tax increment financing, is recorded as a financing obligation and is classified in liabilities held for sale on our Consolidated Balance Sheets. We receive special tax revenues and property tax rebates recorded in interest and other income, which are intended, but not guaranteed, to provide funds to pay the special assessments. We acquired the related tax increment financing bond in a privately negotiated transaction in 2007. Under the definitive agreements, dated as of December 21, 2015, relating to the sale of substantially all of our wholly-owned Country Club Plaza assets in Kansas City, MO (which we refer to as the "Plaza assets"), this tax increment financing bond will be assigned to the buyer of the Plaza assets as of the closing date at the agreed upon value of the principal amount and accrued interest, if any, then outstanding. Such value is included as part of the $660.0 million purchase price for the Plaza assets. This tax increment financing bond is classified in liabilities held for sale on our Consolidated Balance Sheets and was $7.4 million and $9.0 million at December 31, 2015 and 2014, respectively. For additional information about this tax increment financing bond, see Notes 11 and 16.
v3.3.1.900
Commitments and Contingencies
 12 Months Ended
Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]  
Commitments and Contingencies
Commitments and Contingencies

Operating Ground Leases
 
Certain of our properties are subject to operating ground leases. Rental payments on these leases are adjusted periodically based on either the consumer price index or on a pre-determined schedule. Total rental property expense recorded for operating ground leases was $3.4 million, $3.4 million and $2.8 million for the years ended December 31, 2015, 2014 and 2013, respectively.

The following table sets forth our scheduled obligations for future minimum payments on operating ground leases at December 31, 2015:

Years Ending December 31,
 
Minimum Payments
2016
 
$
3,033

2017
 
3,067

2018
 
3,103

2019
 
3,140

2020
 
3,179

Thereafter
 
109,157

 
 
$
124,679


Lease and Contractual Commitments
 
We have $340.0 million of lease and contractual commitments at December 31, 2015. Lease and contractual commitments represent commitments under signed leases and contracts for operating properties (excluding tenant-funded tenant improvements) and contracts for development/redevelopment projects, of which $55.9 million was recorded on our Consolidated Balance Sheet at December 31, 2015.
 
Contingent Consideration
 
In 2015, we acquired development land in Atlanta, GA for a purchase price and related transaction costs of $5.2 million, which includes contingent consideration estimated to be $0.9 million. The contingent consideration is payable in cash to a third party thirty days subsequent to stabilization, which is projected to be in the second quarter of 2019, if and to the extent the stabilized value of the building constructed on the development site exceeds the total development cost.

In 2014, we acquired development land in Nashville, TN for a purchase price and related transaction costs of $15.8 million, which includes contingent consideration estimated to be $3.3 million. The contingent consideration is payable in cash to a third party no later than the first quarter of 2020 if and to the extent the stabilized value of the building constructed on the development site exceeds the total development cost.

Closure of Division Office

In the third quarter of 2015, we announced our intent to list for sale the Plaza assets. The Plaza assets consist of 776,000 square feet of in-service retail space, 468,000 square feet of in-service office space and a 28,000 square foot retail redevelopment project. We intend to close our Kansas City division office upon such sale, which is scheduled to occur on March, 1, 2016. In the fourth quarter of 2015, we accrued $1.6 million of the total $2.6 million severance costs expected to be incurred in connection with the sale.

9.
Commitments and Contingencies - Continued

Environmental Matters
 
Substantially all of our in-service and development properties have been subjected to Phase I environmental assessments and, in certain instances, Phase II environmental assessments. Such assessments and/or updates have not revealed, nor are we aware of, any environmental liability that we believe would have a material adverse effect on our Consolidated Financial Statements.

Litigation, Claims and Assessments
 
We are from time to time a party to a variety of legal proceedings, claims and assessments arising in the ordinary course of our business. We regularly assess the liabilities and contingencies in connection with these matters based on the latest information available. For those matters where it is probable that we have incurred or will incur a loss and the loss or range of loss can be reasonably estimated, the estimated loss is accrued and charged to income in our Consolidated Financial Statements. In other instances, because of the uncertainties related to both the probable outcome and amount or range of loss, a reasonable estimate of liability, if any, cannot be made. Based on the current expected outcome of such matters, none of these proceedings, claims or assessments is expected to have a material effect on our business, financial condition, results of operations or cash flows.
v3.3.1.900
Noncontrolling Interests
 12 Months Ended
Dec. 31, 2015
Noncontrolling Interest [Abstract]  
Noncontrolling Interests
Noncontrolling Interests

Noncontrolling Interests in Consolidated Affiliates

At December 31, 2015, our noncontrolling interests in consolidated affiliates relate to our joint venture partner's 50.0% interest in office properties in Richmond, VA. Our joint venture partner is an unrelated third party.

Noncontrolling Interests in the Operating Partnership

Noncontrolling interests in the Operating Partnership relate to the ownership of Redeemable Common Units. Net income attributable to noncontrolling interests in the Operating Partnership is computed by applying the weighted average percentage of Redeemable Common Units during the period, as a percent of the total number of outstanding Common Units, to the Operating Partnership’s net income for the period after deducting distributions on Preferred Units. When a noncontrolling unitholder redeems a Common Unit for a share of Common Stock or cash, the noncontrolling interests in the Operating Partnership are reduced and the Company’s share in the Operating Partnership is increased by the fair value of each security at the time of redemption.

The following table sets forth the Company's noncontrolling interests in the Operating Partnership:

 
Year Ended December 31,
 
2015
 
2014
Beginning noncontrolling interests in the Operating Partnership
$
130,048

 
$
106,480

Adjustment of noncontrolling interests in the Operating Partnership to fair value
67

 
25,275

Conversions of Common Units to Common Stock
(1,645
)
 
(162
)
Redemptions of Common Units
—

 
(93
)
Net income attributable to noncontrolling interests in the Operating Partnership
2,918

 
3,542

Distributions to noncontrolling interests in the Operating Partnership
(4,959
)
 
(4,994
)
Total noncontrolling interests in the Operating Partnership
$
126,429

 
$
130,048



10.
Noncontrolling Interests - Continued

The following table sets forth net income available for common stockholders and transfers from the Company's noncontrolling interests in the Operating Partnership:

 
Year Ended December 31,
 
2015
 
2014
 
2013
Net income available for common stockholders
$
94,572

 
$
108,457

 
$
122,949

Increase in additional paid in capital from conversions of Common Units to Common Stock
1,645

 
162

 
28,788

Change from net income available for common stockholders and transfers from noncontrolling interests
$
96,217

 
$
108,619

 
$
151,737
v3.3.1.900
Disclosure About Fair Value of Financial Instruments
 12 Months Ended
Dec. 31, 2015
Fair Value Disclosures [Abstract]  
Disclosure About Fair Value of Financial Instruments
Disclosure About Fair Value of Financial Instruments

The following summarizes the three levels of inputs that we use to measure fair value.

Level 1.  Quoted prices in active markets for identical assets or liabilities.

Our Level 1 asset is our investment in marketable securities that we use to pay benefits under our non-qualified deferred compensation plan. Our Level 1 liability is our non-qualified deferred compensation obligation. The Company's Level 1 noncontrolling interests in the Operating Partnership relate to the ownership of Common Units by various individuals and entities other than the Company.

Level 2. Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the related assets or liabilities.

Our Level 2 asset is the fair value of certain of our mortgages and notes receivable. Our Level 2 liabilities include the fair value of our mortgages and notes payable and interest rate swaps.

The fair value of mortgages and notes receivable and mortgages and notes payable is estimated by the income approach utilizing contractual cash flows and market-based interest rates to approximate the price that would be paid in an orderly transaction between market participants. The fair value of interest rate swaps is determined using the market standard methodology of netting the discounted future fixed cash receipts and the discounted expected variable cash payments. The variable cash payments of interest rate swaps are based on the expectation of future LIBOR interest rates (forward curves) derived from observed market LIBOR interest rate curves. In addition, credit valuation adjustments are considered in the fair values to account for potential nonperformance risk, but were concluded to not be significant inputs to the calculation for the periods presented.
 
Level 3. Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.
 
Our Level 3 assets include (1) certain of our mortgages and notes receivable, which were estimated by the income approach utilizing internal cash flow projections and market interest rates to estimate the price that would be paid in an orderly transaction between market participants, and (2) our tax increment financing bond, which is not routinely traded but whose fair value is determined by the income approach utilizing contractual cash flows and market-based interest rates to estimate the projected redemption value based on quoted bid/ask prices for similar unrated municipal bonds.
 
 
11.
Disclosure About Fair Value of Financial Instruments – Continued
 
Our Level 3 liability is the fair value of our financing obligation, which was estimated by the income approach to approximate the price that would be paid in an orderly transaction between market participants, utilizing: (1) contractual cash flows; (2) market-based interest rates; and (3) a number of other assumptions including demand for space, competition for customers, changes in market rental rates, costs of operation and expected ownership periods.
 
The following table sets forth our assets and liabilities and the Company's noncontrolling interests in the Operating Partnership that are measured at fair value within the fair value hierarchy.
 
 
 
 
Level 1
 
Level 2
 
Level 3
 
Total
 
Quoted Prices
in Active
Markets for Identical Assets or Liabilities
 
Significant Observable Inputs
 
Significant Unobservable Inputs
Fair Value at December 31, 2015:
 
 
 
 
 
 
 
Assets:
 
 
 
 
 
 
 
Mortgages and notes receivable, at fair value (1)
$
2,096

 
$
—

 
$
2,096

 
$
—

Marketable securities of non-qualified deferred compensation plan (in prepaid expenses and other assets)
2,736

 
2,736

 
—

 
—

Tax increment financing bond (in real estate and other assets, net, held for sale)
11,197

 
—

 
—

 
11,197

Total Assets
$
16,029

 
$
2,736

 
$
2,096

 
$
11,197

Noncontrolling Interests in the Operating Partnership
$
126,429

 
$
126,429

 
$
—

 
$
—

Liabilities:
 
 
 
 
 
 
 
Mortgages and notes payable, at fair value (1)
$
2,525,390

 
$
—

 
$
2,525,390

 
$
—

Interest rate swaps (in accounts payable, accrued expenses and other liabilities)
3,073

 
—

 
3,073

 
—

Non-qualified deferred compensation obligation (in accounts payable, accrued expenses and other liabilities)
2,736

 
2,736

 
—

 
—

Financing obligation, at fair value (in liabilities held for sale) (1)
7,402

 
—

 
—

 
7,402

Total Liabilities
$
2,538,601

 
$
2,736

 
$
2,528,463

 
$
7,402

Fair Value at December 31, 2014:
 
 
 
 
 
 
 
Assets:
 
 
 
 
 
 
 
Mortgages and notes receivable, at fair value (1)
$
13,142

 
$
—

 
$
2,247

 
$
10,895

Marketable securities of non-qualified deferred compensation plan (in prepaid expenses and other assets)
3,635

 
3,635

 
—

 
—

Tax increment financing bond (in real estate and other assets, net, held for sale)
12,447

 
—

 
—

 
12,447

Total Assets
$
29,224

 
$
3,635

 
$
2,247

 
$
23,342

Noncontrolling Interests in the Operating Partnership
$
130,048

 
$
130,048

 
$
—

 
$
—

Liabilities:
 
 
 
 
 
 
 
Mortgages and notes payable, at fair value (1)
$
2,141,334

 
$
—

 
$
2,141,334

 
$
—

Interest rate swaps (in accounts payable, accrued expenses and other liabilities)
2,412

 
—

 
2,412

 
—

Non-qualified deferred compensation obligation (in accounts payable, accrued expenses and other liabilities)
3,635

 
3,635

 
—

 
—

Financing obligation, at fair value (in liabilities held for sale) (as revised) (1)
8,623

 
—

 
—

 
8,623

Total Liabilities (as revised)
$
2,156,004

 
$
3,635

 
$
2,143,746

 
$
8,623


__________
(1)    Amounts recorded at historical cost on our Consolidated Balance Sheets at December 31, 2015 and 2014.

11.
Disclosure About Fair Value of Financial Instruments – Continued

The following table sets forth the changes in our Level 3 asset, which is recorded at fair value on our Consolidated Balance Sheets:
 
December 31,
 
2015
 
2014
Asset:
 
 
 
Tax Increment Financing Bond:
 
 
 
Beginning balance
$
12,447

 
$
13,403

Principal repayment
(1,695
)
 
(1,540
)
Unrealized gains (in AOCL)
445

 
584

Ending balance
$
11,197

 
$
12,447


 
During 2007, we acquired a tax increment financing bond associated with a parking garage developed by us. This bond amortizes to maturity in 2020. The estimated fair value at December 31, 2015 was equal to the outstanding principal due on the bond. If the discount rate used to fair value this bond was 100 basis points higher or lower, the fair value of the bond would have been $0.3 million lower or $0.3 million higher, respectively, as of December 31, 2015. Payment of the principal and interest for the bond is guaranteed by us. We have recorded no credit losses related to the bond during the years ended December 31, 2015 and 2014. There is no legal right of offset with the liability, which we report as a financing obligation, related to this tax increment financing bond. See Note 8.
 
During 2014, we recorded an impairment of real estate assets on a building, which was subsequently sold during the year, based upon fair value at the time of impairment of $4.9 million. The impaired real estate asset was deemed to be a Level 3 asset and valued based primarily on market-based inputs and our assumptions about the use of the asset, as observable inputs were not available. In the absence of observable inputs, we estimate the fair value of real estate using unobservable data such as estimated discount and capitalization rates. We also utilize local and national industry market data such as comparable sales, sales contracts and appraisals to assist us in our estimation of fair value. Significant increases or decreases in any valuation inputs in isolation would result in a significantly lower or higher fair value measurement.
 
The following table sets forth quantitative information about the unobservable inputs of our Level 3 assets, which were recorded at fair value on our Consolidated Balance Sheets:
 
 
Valuation
Technique
 
Unobservable
Input
 
Rate/ Percentage
2015 Asset:
 
 
 
 
 
Tax increment financing bond
Income approach
 
Discount rate
 
6.93%
2014 Assets:
 
 
 
 
 
Tax increment financing bond
Income approach
 
Discount rate
 
8.4%
Impaired real estate assets
Income approach
 
Capitalization rate
 
9.5%
 
 
 
Discount rate
 
10.0%
v3.3.1.900
Equity
 12 Months Ended
Dec. 31, 2015
Equity [Abstract]  
Equity
Equity
 
Common Stock Issuances
 
During 2015 and 2014, the Company issued 2,922,905 and 2,500,031 shares, respectively, of Common Stock in public offerings and received net proceeds of $124.9 million and $104.1 million, respectively. At December 31, 2015, the Company had 103.9 million remaining shares of Common Stock authorized to be issued under its charter.

Common Stock Dividends
 
Dividends of the Company declared and paid per share of Common Stock aggregated $1.70 for each of the years ended December 31, 2015, 2014 and 2013.

The following table sets forth the Company's estimated taxability to the common stockholders of dividends per share for federal income tax purposes:
 
 
Year Ended December 31,
 
2015
 
2014
 
2013
Ordinary income
$
1.50

 
$
1.31

 
$
1.28

Capital gains
0.13

 
0.29

 
0.26

Return of capital
0.07

 
0.10

 
0.16

Total
$
1.70

 
$
1.70

 
$
1.70

The Company's tax returns have not been examined by the Internal Revenue Service (“IRS”) and, therefore, the taxability of dividends is subject to change.
 
Preferred Stock
 
The following table sets forth the Company's Preferred Stock:
 
Preferred Stock Issuances
 
Issue Date
 
Number of Shares Outstanding
 
Carrying Value
 
Liquidation Preference Per Share
 
Optional Redemption Date
 
Annual Dividends Payable Per Share
 
 
 
 
(in thousands)
 
 
 
 
 
 
 
 
December 31, 2015
 
 
 
 
 
 
 
 
 
 
 
 
8.625% Series A Cumulative Redeemable
 
2/12/1997
 
29

 
$
29,050

 
$
1,000

 
2/12/2027
 
$
86.25

December 31, 2014
 
 
 
 
 
 
 
 
 
 
 
 
8.625% Series A Cumulative Redeemable
 
2/12/1997
 
29

 
$
29,060

 
$
1,000

 
2/12/2027
 
$
86.25



12.
Equity - Continued

The following table sets forth the Company's estimated taxability to the preferred stockholders of dividends per share for federal income tax purposes:
 
 
Year Ended December 31,
 
2015
 
2014
 
2013
8.625% Series A Cumulative Redeemable:
 
 
 
 
 
Ordinary income
$
79.23

 
$
70.41

 
$
71.56

Capital gains
7.02

 
15.84

 
14.69

Total
$
86.25

 
$
86.25

 
$
86.25


The Company's tax returns have not been examined by the IRS and, therefore, the taxability of dividends is subject to change.

Warrants
 
At December 31, 2015 and 2014, we had 15,000 warrants outstanding with an exercise price of $32.50 per share. Upon exercise of a warrant, the Company will contribute the exercise price to the Operating Partnership in exchange for Common Units. Therefore, the Operating Partnership accounts for such warrants as if issued by the Operating Partnership. These warrants have no expiration date.

Dividend Reinvestment Plan
 
The Company has a Dividend Reinvestment and Stock Purchase Plan (“DRIP”) under which holders of Common Stock may elect to automatically reinvest their dividends in additional shares of Common Stock and make optional cash payments for additional shares of Common Stock.

Common Unit Distributions
 
Distributions of the Operating Partnership declared and paid per Common Unit aggregated $1.70 for each of the years ended December 31, 2015, 2014 and 2013.
 
Redeemable Common Units
 
Generally, the Operating Partnership is obligated to redeem each Redeemable Common Unit at the request of the holder thereof for cash equal to the value of one share of Common Stock based on the average of the market price for the 10 trading days immediately preceding the notice date of such redemption, provided that the Company at its option may elect to acquire any such Redeemable Common Unit presented for redemption for cash or one share of Common Stock. When a holder redeems a Redeemable Common Unit for a share of Common Stock or cash, the Company’s share in the Operating Partnership will be increased. The Common Units owned by the Company are not redeemable.
 

12.
Equity - Continued
 
Preferred Units
 
The following table sets forth the Operating Partnership's Preferred Units:
 
Preferred Unit Issuances
 
Issue Date
 
Number of
Units
Outstanding
 
Carrying
Value
 
Liquidation Preference
Per Unit
 
Optional Redemption
Date
 
Annual
Distributions
Payable
Per Unit
 
 
 
 
(in thousands)
 
 
 
 
 
 
 
 
December 31, 2015
 
 
 
 
 
 
 
 
 
 
 
 
8.625% Series A Cumulative Redeemable
 
2/12/1997
 
29

 
$
29,050

 
$
1,000

 
2/12/2027
 
$
86.25

December 31, 2014
 
 
 
 
 
 
 
 
 
 
 
 
8.625% Series A Cumulative Redeemable
 
2/12/1997
 
29

 
$
29,060

 
$
1,000

 
2/12/2027
 
$
86.25
v3.3.1.900
Employee Benefit Plans
 12 Months Ended
Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Employee Benefit Plans
Employee Benefit Plans
 
Officer, Management and Director Compensation Programs
 
The officers of the Company participate in an annual non-equity incentive program pursuant to which they are eligible to earn cash payments based on a percentage of their annual base salary in effect for December of the applicable year. Under this component of our executive compensation program, officers are eligible to earn additional cash compensation to the extent specific performance-based metrics are achieved during the most recently completed year. The position held by each officer has a target annual incentive percentage that ranges from 35% to 130% of base salary. The more senior the position, the greater the portion of compensation that varies with performance.
 
The percentage amount an officer may earn under the annual non-equity incentive plan is the product of the target annual incentive percentage times an “actual performance factor,” which can range from zero to 200%. The actual performance factor depends upon the relationship between actual performance in specific areas at each of our divisions and predetermined goals. For corporate officers, the actual performance factor is based on the goals and criteria applied to the Company’s performance as a whole. For officers who oversee our divisions, the actual performance factor is based on the goals and criteria applied partly to that division’s performance and partly to the Company’s performance overall. Payments under our annual non-equity incentive plan are accrued and expensed in the year earned.
 
Certain other employees participate in a similar annual non-equity incentive program. Incentive eligibility ranges from 6% to 30% of annual base salary. The actual incentive payment is determined by a mix of the Company's overall performance, the performance of any applicable division and the individual’s performance during each year. These incentive payments are also accrued and expensed in the year earned.
 

13.
Employee Benefit Plans - Continued

The Company's officers generally receive annual grants of stock options and restricted stock under the Company's long-term equity incentive plan on or about March 1 of each year. Restricted stock grants are also made annually to directors and certain other employees. Except as set forth in the next sentence, dividends received on restricted stock are non-forfeitable and are paid at the same rate and on the same date as on shares of Common Stock. With respect to shares of total return-based restricted stock issued to the Company's chief executive officer, dividends accumulate and are payable only if and to the extent the shares vest. Dividends paid on subsequently forfeited shares are expensed. Additional total return-based restricted stock may be issued at the end of the three-year periods if actual performance exceeds certain levels of performance. Such additional shares, if any, would be fully vested when issued. No expense is recorded for additional shares of total return-based restricted stock that may be issued at the end of the three-year period since that possibility is reflected in the grant date fair value. The following table sets forth the number of shares of Common Stock reserved for future issuance under the Company's long-term equity incentive plans:
 
December 31,
 
2015
 
2014
Outstanding stock options and warrants
702,228

 
592,321

Possible future issuance under equity incentive plans
3,084,158

 
1,382,406

 
3,786,386

 
1,974,727



Of the possible future issuance under the Company' long-term equity incentive plan at December 31, 2015, no more than an additional 1.1 million shares can be in the form of restricted stock.

During each of the years ended December 31, 2015, 2014 and 2013, we recognized $6.9 million of share-based compensation expense. Because REITs generally do not pay income taxes, we do not realize tax benefits on share-based payments. At December 31, 2015, there was $4.9 million of total unrecognized share-based compensation costs, which will be recognized over a weighted average remaining contractual term of 2.3 years.

- Stock Options

Stock options issued prior to 2005 and after 2013 vest ratably on an annual basis over four years and expire after 10 years. Stock options issued from 2005 through 2013 vest ratably on an annual basis over four years and expire after seven years. The value of all options as of the date of grant is calculated using the Black-Scholes option-pricing model and is amortized over the respective vesting period or the service period, if shorter, for employees who are or will become eligible under the Company's retirement plan. The weighted average fair values of options granted during 2015, 2014 and 2013 were $6.19, $6.75 and $6.50, respectively, per option. The fair values of the options granted were determined at the grant dates using the following assumptions:

 
2015
 
2014
 
2013
Risk free interest rate (1) 
1.7
%
 
1.8
%
 
1.0
%
Common stock dividend yield (2) 
3.7
%
 
4.5
%
 
4.7
%
Expected volatility (3) 
22.4
%
 
30.3
%
 
32.4
%
Average expected option life (years) (4)
5.75

 
5.75

 
5.75

__________
(1)
Represents the interest rate as of the grant date on US treasury bonds having the same life as the estimated life of the option grants.
(2)
The dividend yield is calculated utilizing the dividends paid for the previous one-year period and the per share price of Common Stock on the date of grant.
(3)
Based on the historical volatility of Common Stock over a period relevant to the related stock option grant.
(4)
The average expected option life is based on an analysis of the Company's historical data.

13.
Employee Benefit Plans - Continued

The following table sets forth stock option activity:

 
Options Outstanding
 
Number of Options
 
Weighted Average Exercise Price
Balances at December 31, 2012
1,129,309

 
$
30.10

Options granted
168,700

 
36.50

Options exercised
(423,627
)
 
28.22

Balances at December 31, 2013
874,382

 
32.24

Options granted 
190,330

 
37.90

Options canceled
(134,628
)
 
41.93

Options exercised 
(352,763
)
 
27.21

Balances at December 31, 2014
577,321

 
34.92

Options granted
197,408

 
45.61

Options canceled
(3,829
)
 
40.21

Options exercised
(83,672
)
 
34.89

Balances at December 31, 2015 (1) (2)
687,228

 
$
37.97

__________
(1)
The outstanding options at December 31, 2015 had a weighted average remaining life of 6.1 years.
(2)
The Company had 218,816 options exercisable at December 31, 2015 with a weighted average exercise price of $33.03, weighted average remaining life of 3.2 years and intrinsic value of $2.3 million. Of these exercisable options, there were no exercise prices higher than the market price of our Common Stock at December 31, 2015.

Cash received or receivable from options exercised was $3.3 million, $11.1 million and $12.5 million for the years ended December 31, 2015, 2014 and 2013, respectively. The total intrinsic value of options exercised during the years ended December 31, 2015, 2014 and 2013 was $0.9 million, $5.0 million and $3.9 million, respectively. The total intrinsic value of options outstanding at December 31, 2015, 2014 and 2013 was $4.3 million, $5.4 million and $4.3 million, respectively. The Company generally does not permit the net cash settlement of exercised stock options, but does permit net share settlement so long as the shares received are held for at least a year. The Company has a practice of issuing new shares to satisfy stock option exercises.

- Time-Based Restricted Stock

Shares of time-based restricted stock vest ratably on an annual basis over four years. The value of grants of time-based restricted stock is based on the market value of Common Stock as of the date of grant and is amortized to expense over the respective vesting period or the service period, if shorter, for employees who are or will become eligible under the Company's retirement plan.

13.
Employee Benefit Plans - Continued
 
The following table sets forth time-based restricted stock activity:
 
 
Number of Shares
 
Weighted Average Grant Date Fair Value
Restricted shares outstanding at December 31, 2012
222,502

 
$
30.31

Awarded and issued (1)
86,144

 
36.64

Vested (2)
(94,037
)
 
27.80

Forfeited
(1,813
)
 
36.01

Restricted shares outstanding at December 31, 2013
212,796

 
33.96

Awarded and issued (1)
94,932

 
37.76

Vested (2)
(85,660
)
 
32.87

Restricted shares outstanding at December 31, 2014
222,068

 
35.97

Awarded and issued (1)
71,994

 
45.91

Vested (2)
(85,809
)
 
35.14

Forfeited
(3,533
)
 
39.94

Restricted shares outstanding at December 31, 2015
204,720

 
$
39.74

__________
(1)
The weighted average fair value at grant date of time-based restricted stock issued during the years ended December 31, 2015, 2014 and 2013 was $3.3 million, $3.6 million and $3.2 million, respectively.
(2)
The vesting date fair value of time-based restricted stock that vested during the years ended December 31, 2015, 2014 and 2013 was $3.9 million, $3.2 million and $3.4 million, respectively. Vested shares include those shares surrendered by employees to satisfy tax withholding obligations in connection with such vesting.
- Total Return-Based Restricted Stock
 
Shares of total return-based restricted stock vest to the extent the Company's absolute total returns for certain pre-determined three-year periods exceed predetermined goals. The amount subject to vesting ranges from zero to 150%. Notwithstanding the Company’s absolute total returns, if the Company’s total return exceeds 100% of the peer group total return index, at least 50% of total return-based restricted stock issued in 2013 will vest at the end of the applicable period and at least 75% of total return-based restricted stock issued in 2015 and 2014 will vest at the end of the applicable period. The weighted average grant date fair value of such shares of total return-based restricted stock issued in 2015, 2014 and 2013 was determined to be $43.77, $35.58 and $31.73, respectively, and is amortized over the respective three-year period or the service period, if shorter, for employees who are or will become eligible under the Company's retirement plan. The fair values of the total return-based restricted stock granted were determined at the grant dates using a Monte Carlo simulation model and the following assumptions:
 
 
2015
 
2014
 
2013
Risk free interest rate (1) 
1.0
%
 
0.7
%
 
0.4
%
Common stock dividend yield (2) 
3.8
%
 
4.7
%
 
4.9
%
Expected volatility (3) 
43.0
%
 
43.4
%
 
43.4
%
__________
(1)
Represents the interest rate as of the grant date on US treasury bonds having the same life as the estimated life of the total return-based restricted stock grants.
(2)
The dividend yield is calculated utilizing the dividends paid for the previous one-year period and the average per share price of Common Stock during the three-month period preceding the date of grant.
(3)
Based on the historical volatility of Common Stock over a period relevant to the related total return-based restricted stock grant.

13.
Employee Benefit Plans - Continued

The following table sets forth total return-based restricted stock activity:

 
Number of Shares
 
Weighted Average Grant Date Fair Value
Restricted shares outstanding at December 31, 2012
125,288

 
$
32.87

Awarded and issued (1)
65,486

 
31.73

Vested (2)
(41,863
)
 
24.75

Forfeited
(15,523
)
 
24.75

Restricted shares outstanding at December 31, 2013
133,388

 
35.29

Awarded and issued (1)
74,569

 
35.58

Restricted shares outstanding at December 31, 2014
207,957

 
35.70

Awarded and issued (1) (3)
118,817

 
37.64

Vested (2) (3)
(129,762
)
 
31.97

Forfeited
(1,709
)
 
37.25

Restricted shares outstanding at December 31, 2015
195,303

 
$
36.66

__________
(1)
The fair value at grant date of total return-based restricted stock issued during the years ended December 31, 2015, 2014 and 2013 was $2.5 million, $2.7 million and $2.1 million, respectively, at target.
(2)
The vesting date fair value of total return-based restricted stock that vested during the years ended December 31, 2015 and 2013 was $5.9 million and $1.5 million, respectively, based on the performance of the specific plans. Vested shares include those shares surrendered by employees to satisfy tax withholding obligations in connection with such vesting. There were no vested shares of total return-based restricted stock during the year ended December 31, 2014.
(3)
The 2015 amounts include 61,860 additional shares from the 2012 plan since the plan's payout was in excess of the initial 100% target.

401(k) Retirement Savings Plan
 
We have a 401(k) Retirement Savings Plan covering substantially all employees who meet certain age and employment criteria. We contribute amounts for each participant at a rate of 75% of the employee’s contribution (up to 6% of each employee’s bi-weekly salary and cash incentives, subject to statutory limits). During the years ended December 31, 2015, 2014 and 2013, we contributed $1.3 million, $1.2 million and $1.1 million, respectively, to the 401(k) savings plan. The assets of this qualified plan are not included in our Consolidated Financial Statements since the assets are not owned by us.

Retirement Plan

The Company has a retirement plan for employees with at least 30 years of continuous service or are at least 55 years old with at least 10 years of continuous service. Subject to advance written notice and a non-compete agreement, eligible retirees would be entitled to receive a pro rata amount of the annual non-equity incentive compensation earned during the year of retirement. Stock options and time-based restricted stock would be non-forfeitable and vest according to the terms of their original grants. Eligible retirees would also be entitled to retain any total return-based restricted stock that subsequently vests after the retirement date according to the terms of their original grants. For employees who meet the age and service eligibility requirements, 100% of their annual grants are expensed at the grant date as if fully vested. For employees who will meet the age and service eligibility requirements within the normal vesting periods, the grants are amortized over the shorter service period.

13.
Employee Benefit Plans - Continued

Deferred Compensation

Prior to 2010, officers could elect to defer all or a portion of their cash compensation, which was then invested in unrelated mutual funds under our non-qualified deferred compensation plan. These investments are recorded at fair value, which aggregated $2.7 million and $3.6 million at December 31, 2015 and 2014, respectively, and are included in prepaid expenses and other assets, with an offsetting deferred compensation liability recorded in accounts payable, accrued expenses and other liabilities. Deferred amounts ultimately payable to the participants are based on the value of the related mutual fund investments. Accordingly, changes in the value of the unrelated mutual funds are recorded in interest and other income and the corresponding offsetting changes in the deferred compensation liability are recorded in general and administration expense. As a result, there is no effect on our net income.

The following table sets forth our deferred compensation liability:

 
Year Ended December 31,
 
2015
 
2014
 
2013
Beginning deferred compensation liability
$
3,635

 
$
3,996

 
$
3,354

Mark-to-market adjustment to deferred compensation (in general and administrative expenses)
(32
)
 
235

 
803

Distributions from deferred compensation plans
(867
)
 
(596
)
 
(161
)
Total deferred compensation liability
$
2,736

 
$
3,635

 
$
3,996



Employee Stock Purchase Plan

The Company has an Employee Stock Purchase Plan pursuant to which employees may contribute up to 25% of their cash compensation for the purchase of Common Stock. At the end of each quarterly offering period, each participant's account balance, which includes accumulated dividends, is applied to acquire shares of Common Stock at a cost that is calculated at 85% of the average closing price on the New York Stock Exchange on the five consecutive days preceding the last day of the quarter. In the years ended December 31, 2015, 2014 and 2013, the Company issued 29,496, 28,682 and 27,250 shares, respectively, of Common Stock under this Plan. The 15% discount on newly issued shares, which is taxable income to the participants and is recorded by us as additional compensation expense, aggregated $0.2 million in each of the years ended December 31, 2015, 2014 and 2013. As a general rule, shares purchased under the Plan must be held for at least a year.
v3.3.1.900
Accumulated Other Comprehensive Loss
 12 Months Ended
Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Loss

The following table sets forth the components of AOCL:

 
December 31,
 
2015
 
2014
Tax increment financing bond:
 
 
 
Beginning balance
$
(445
)
 
$
(1,029
)
Unrealized gains on tax increment financing bond
445

 
584

Ending balance
—

 
(445
)
Cash flow hedges:
 
 
 
Beginning balance
(3,467
)
 
(1,582
)
Unrealized losses on cash flow hedges
(4,040
)
 
(5,662
)
Amortization of cash flow hedges (1)
3,696

 
3,777

Ending balance
(3,811
)
 
(3,467
)
Total accumulated other comprehensive loss
$
(3,811
)
 
$
(3,912
)

__________
(1)
Amounts reclassified out of AOCL into contractual interest expense.
v3.3.1.900
Rental and Other Revenues; Rental Property and Other Expenses
 12 Months Ended
Dec. 31, 2015
Rental and Other Revenues; Rental Property And Other Expenses [Abstract]  
Rental and Other Revenues; Rental Property and Other Expenses
Rental and Other Revenues; Rental Property and Other Expenses

Our real estate assets are leased to customers under operating leases. The minimum rental amounts under the leases are generally subject to scheduled fixed increases. Generally, the leases also provide that we receive cost recovery income from customers for increases in certain costs above the costs incurred during a contractually specified base year. The following table sets forth our rental and other revenues from continuing operations:

 
Year Ended December 31,
 
2015
 
2014
 
2013
Contractual rents, net
$
513,909

 
$
476,684

 
$
437,855

Straight-line rental income, net
22,054

 
21,045

 
16,653

Amortization of lease incentives
(1,493
)
 
(1,419
)
 
(1,361
)
Cost recovery income, net
45,247

 
39,112

 
31,869

Lease termination fees
990

 
658

 
1,436

Fee income
3,717

 
3,313

 
5,282

Other miscellaneous operating revenues
20,247

 
16,478

 
13,274

 
$
604,671

 
$
555,871

 
$
505,008


The following table sets forth our scheduled future minimum base rents to be received from customers for leases in effect at December 31, 2015 for the properties that we wholly own:

2016
$
566,672

2017
539,352

2018
502,547

2019
437,797

2020
362,295

Thereafter
1,304,530

 
$
3,713,193


The following table sets forth our rental property and other expenses from continuing operations:

 
Year Ended December 31,
 
2015
 
2014
 
2013
Utilities, insurance and real estate taxes
$
117,470

 
$
113,226

 
$
101,036

Maintenance, cleaning and general building
79,091

 
74,109

 
67,319

Property management and administrative expenses
12,446

 
12,093

 
11,515

Other miscellaneous operating expenses
6,934

 
6,456

 
4,317

 
$
215,941

 
$
205,884

 
$
184,187
v3.3.1.900
Real Estate and Other Assets Held For Sale and Discontinued Operations
 12 Months Ended
Dec. 31, 2015
Discontinued Operations and Disposal Groups [Abstract]  
Discontinued Operations
Real Estate and Other Assets Held For Sale and Discontinued Operations
 
As of December 31, 2015 and 2014, real estate and other assets, net, held for sale and liabilities held for sale included 776,000 square feet of in-service retail space, 468,000 square feet of in-service office space and a 28,000 square foot retail redevelopment project in Kansas City. This planned sale represents a strategic shift in operations as the retail and office space in our Kansas City division are a major line of the Company's business. As such, the revenues and expenses related to these properties have been reclassified to income from discontinued operations on our Consolidated Statements of Income and the related assets and liabilities have been reclassified to real estate and other assets, net, held for sale and liabilities held for sale, respectively, on our Consolidated Balance Sheets. The following tables set forth the assets and liabilities related to discontinued operations at December 31, 2015 and 2014 and the results of operations and cash flows for the years ended December 31, 2015, 2014 and 2013:
 
 
December 31,
 
2015
 
2014
Assets:
 
 
 
Land
$
16,681

 
$
16,406

Buildings and tenant improvements
322,811

 
313,323

Development in-process
—

 
4,562

Land held for development
1,089

 
2,084

Less-accumulated depreciation
(131,274
)
 
(131,419
)
Net real estate assets
209,307

 
204,956

Accrued straight-line rents receivable, net
11,730

 
11,643

Deferred leasing costs, net
6,690

 
6,320

Prepaid expenses and other assets, net
13,221

 
13,896

Real estate and other assets, net, held for sale
$
240,948

 
$
236,815

Liabilities:
 
 
 
Accounts payable, accrued expenses and other liabilities
$
(6,717
)
 
$
(6,151
)
Financing obligation
(7,402
)
 
(8,962
)
Liabilities held for sale
$
(14,119
)
 
$
(15,113
)
 
Year Ended December 31,
 
2015
 
2014
 
2013
Rental and other revenues
$
50,935

 
$
52,597

 
$
72,614

Operating expenses:
 
 
 
 
 
Rental property and other expenses
20,805

 
19,620

 
27,440

Depreciation and amortization
14,039

 
15,386

 
19,773

General and administrative
2,366

 
965

 
812

Total operating expenses
37,210

 
35,971

 
48,025

Interest expense
621

 
725

 
817

Other income
2,635

 
2,700

 
3,086

Income from discontinued operations
15,739

 
18,601

 
26,858

Impairments of real estate assets
—

 
—

 
(2,194
)
Net gains on disposition of discontinued operations
—

 
384

 
63,792

Total income from discontinued operations
$
15,739

 
$
18,985

 
$
88,456


 
 
Year Ended December 31,
 
2015
 
2014
 
2013
Cash flows from operating activities
$
27,579

 
$
32,485

 
$
32,644

Cash flows from investing activities
$
(16,445
)
 
$
(8,279
)
 
$
(7,482
)
v3.3.1.900
Earnings Per Share and Per Unit
 12 Months Ended
Dec. 31, 2015
Earnings Per Share [Abstract]  
Earnings Per Share and Per Unit
Earnings Per Share and Per Unit

The following table sets forth the computation of basic and diluted earnings per share of the Company:

 
Year Ended December 31,
 
2015
 
2014
 
2013
Earnings per Common Share - basic:
 
 
 
 
 
Numerator:
 
 
 
 
 
Income from continuing operations
$
85,521

 
$
96,987

 
$
42,641

Net (income) attributable to noncontrolling interests in the Operating Partnership from continuing operations
(2,443
)
 
(2,945
)
 
(1,294
)
Net (income) attributable to noncontrolling interests in consolidated affiliates from continuing operations
(1,264
)
 
(1,466
)
 
(949
)
Dividends on Preferred Stock
(2,506
)
 
(2,507
)
 
(2,508
)
Income from continuing operations available for common stockholders
79,308

 
90,069

 
37,890

Income from discontinued operations
15,739

 
18,985

 
88,456

Net (income) attributable to noncontrolling interests in the Operating Partnership from discontinued operations
(475
)
 
(597
)
 
(3,397
)
Income from discontinued operations available for common stockholders
15,264

 
18,388

 
85,059

Net income available for common stockholders
$
94,572

 
$
108,457

 
$
122,949

Denominator:
 
 
 
 
 
Denominator for basic earnings per Common Share – weighted average shares
94,404

 
90,743

 
85,335

Earnings per Common Share - basic:
 
 
 
 
 
Income from continuing operations available for common stockholders
$
0.84

 
$
1.00

 
$
0.44

Income from discontinued operations available for common stockholders
0.16

 
0.20

 
1.00

Net income available for common stockholders
$
1.00

 
$
1.20

 
$
1.44

Earnings per Common Share - diluted:
 
 
 
 
 
Numerator:
 
 
 
 
 
Income from continuing operations
$
85,521

 
$
96,987

 
$
42,641

Net (income) attributable to noncontrolling interests in consolidated affiliates from continuing operations
(1,264
)
 
(1,466
)
 
(949
)
Dividends on Preferred Stock
(2,506
)
 
(2,507
)
 
(2,508
)
Income from continuing operations available for common stockholders before net (income) attributable to noncontrolling interests in the Operating Partnership
81,751

 
93,014

 
39,184

Income from discontinued operations available for common stockholders
15,739

 
18,985

 
88,456

Net income available for common stockholders before net (income) attributable to noncontrolling interests in the Operating Partnership
$
97,490

 
$
111,999

 
$
127,640

Denominator:
 
 
 
 
 
Denominator for basic earnings per Common Share – weighted average shares
94,404

 
90,743

 
85,335

Add:
 
 
 
 
 
Stock options using the treasury method
87

 
119

 
114

Noncontrolling interests Common Units
2,915

 
2,938

 
3,387

Denominator for diluted earnings per Common Share – adjusted weighted average shares and assumed conversions (1) (2)
97,406

 
93,800

 
88,836

Earnings per Common Share - diluted:
 
 
 
 
 
Income from continuing operations available for common stockholders
$
0.84

 
$
0.99

 
$
0.44

Income from discontinued operations available for common stockholders
0.16

 
0.20

 
1.00

Net income available for common stockholders
$
1.00

 
$
1.19

 
$
1.44

__________

17.
Earnings Per Share and Per Unit - Continued
 
(1)
There were 0.2 million and 0.3 million options outstanding during the years ended December 31, 2015 and 2013, respectively, that were not included in the computation of diluted earnings per share because the impact of including such options would be anti-dilutive. There were no such options outstanding during the year ended December 31, 2014.
(2)
Includes all unvested restricted stock where dividends on such restricted stock are non-forfeitable.

The following table sets forth the computation of basic and diluted earnings per unit of the Operating Partnership:

 
Year Ended December 31,
 
2015
 
2014
 
2013
Earnings per Common Unit - basic:
 
 
 
 
 
Numerator:
 
 
 
 
 
Income from continuing operations
$
85,521

 
$
96,987

 
$
42,590

Net (income) attributable to noncontrolling interests in consolidated affiliates from continuing operations
(1,264
)
 
(1,466
)
 
(949
)
Distributions on Preferred Units
(2,506
)
 
(2,507
)
 
(2,508
)
Income from continuing operations available for common unitholders
81,751

 
93,014

 
39,133

Income from discontinued operations available for common unitholders
15,739

 
18,985

 
88,456

Net income available for common unitholders
$
97,490

 
$
111,999

 
$
127,589

Denominator:
 
 
 
 
 
Denominator for basic earnings per Common Unit – weighted average units
96,910

 
93,272

 
88,313

Earnings per Common Unit - basic:
 
 
 
 
 
Income from continuing operations available for common unitholders
$
0.84

 
$
1.00

 
$
0.44

Income from discontinued operations available for common unitholders
0.17

 
0.20

 
1.00

Net income available for common unitholders
$
1.01

 
$
1.20

 
$
1.44

Earnings per Common Unit - diluted:
 
 
 
 
 
Numerator:
 
 
 
 
 
Income from continuing operations
$
85,521

 
$
96,987

 
$
42,590

Net (income) attributable to noncontrolling interests in consolidated affiliates from continuing operations
(1,264
)
 
(1,466
)
 
(949
)
Distributions on Preferred Units
(2,506
)
 
(2,507
)
 
(2,508
)
Income from continuing operations available for common unitholders
81,751

 
93,014

 
39,133

Income from discontinued operations available for common unitholders
15,739

 
18,985

 
88,456

Net income available for common unitholders
$
97,490

 
$
111,999

 
$
127,589

Denominator:
 
 
 
 
 
Denominator for basic earnings per Common Unit – weighted average units
96,910

 
93,272

 
88,313

Add:
 
 
 
 
 
Stock options using the treasury method
87

 
119

 
114

Denominator for diluted earnings per Common Unit – adjusted weighted average units and assumed conversions (1) (2)
96,997

 
93,391

 
88,427

Earnings per Common Unit - diluted:
 
 
 
 
 
Income from continuing operations available for common unitholders
$
0.84

 
$
1.00

 
$
0.44

Income from discontinued operations available for common unitholders
0.17

 
0.20

 
1.00

Net income available for common unitholders
$
1.01

 
$
1.20

 
$
1.44

__________
(1)
There were 0.2 million and 0.3 million options outstanding during the years ended December 31, 2015 and 2013, respectively, that were not included in the computation of diluted earnings per unit because the impact of including such options would be anti-dilutive. There were no such options outstanding during the year ended December 31, 2014.
(2)
Includes all unvested restricted stock where dividends on such restricted stock are non-forfeitable.
 
v3.3.1.900
Income Taxes
 12 Months Ended
Dec. 31, 2015
Income Tax Disclosure [Abstract]  
Income Taxes
Income Taxes

Our Consolidated Financial Statements include the operations of the Company's taxable REIT subsidiary, which is not entitled to the dividends paid deduction and is subject to federal, state and local income taxes on its taxable income. As a REIT, the Company may also be subject to federal excise taxes if it engages in certain types of transactions.

The minimum dividend per share of Common Stock required for the Company to maintain its REIT status was $1.31, $1.13 and $1.08 per share in 2015, 2014 and 2013, respectively. Continued qualification as a REIT depends on the Company's ability to satisfy the dividend distribution tests, stock ownership requirements and various other qualification tests. The tax basis of the Company's assets (net of accumulated tax depreciation and amortization) and liabilities was approximately $4.2 billion and $2.6 billion, respectively, at December 31, 2015 and $3.6 billion and $2.2 billion, respectively, at December 31, 2014. The tax basis of the Operating Partnership's assets (net of accumulated tax depreciation and amortization) and liabilities was approximately $4.2 billion and $2.6 billion, respectively, at December 31, 2015 and $3.6 billion and $2.2 billion, respectively, at December 31, 2014.

During the years ended December 31, 2015, 2014 and 2013, the Company qualified as a REIT and incurred no federal income tax expense; accordingly, the only federal income taxes included in the accompanying Consolidated Financial Statements relate to activities of the Company's taxable REIT subsidiary.

The following table sets forth the Company's income tax expense/(benefit):

 
Year Ended December 31,
 
2015
 
2014
 
2013
Current tax expense:
 
 
 
 
 
Federal
$
949

 
$
1,480

 
$
60

State
351

 
161

 
312

 
1,300

 
1,641

 
372

Deferred tax expense/(benefit):
 
 
 
 
 
Federal
(233
)
 
(1,628
)
 
1,479

State
(115
)
 
(305
)
 
277

 
(348
)
 
(1,933
)
 
1,756

Less tax expense netted against gain included in equity in earnings of unconsolidated affiliates
—

 
—

 
(1,721
)
Less tax expense netted against gain on disposition of property
(518
)
 
—

 
—

Total income tax expense/(benefit)
$
434

 
$
(292
)
 
$
407



The Company's net deferred tax asset/(liability) is $(0.2) million and $0.1 million as of December 31, 2015 and 2014, respectively. The net deferred tax asset/(liability) is comprised primarily of tax versus book differences related to property (depreciation, amortization and basis differences).

For the years ended December 31, 2015 and 2014, there were no unrecognized tax benefits. The Company is subject to federal, state and local income tax examinations by taxing authorities for 2012 through 2015. The Company does not expect that the total amount of unrecognized benefits will materially change within the next year.
v3.3.1.900
Segment Information
 12 Months Ended
Dec. 31, 2015
Segment Reporting [Abstract]  
Segment Information
Segment Information

Our principal business is the operation, acquisition and development of rental real estate properties. We evaluate our business by product type and by geographic location. Each product type has different customers and economic characteristics as to rental rates and terms, cost per rentable square foot of buildings, the purposes for which customers use the space, the degree of maintenance and customer support required and customer dependency on different economic drivers, among others. The operating results by geographic grouping are also regularly reviewed by our chief operating decision maker for assessing performance and other purposes. There are no material inter-segment transactions.

Our accounting policies of the segments are the same as those used in our Consolidated Financial Statements. All operations are within the United States.

The following tables summarize the rental and other revenues and net operating income, the primary industry property-level performance metric used by our chief operating decision maker which is defined as rental and other revenues less rental property and other expenses, for each of our reportable segments. Our segment information for the years ended December 31, 2014 and 2013 have been retrospectively revised from previously reported amounts to reflect a change in our reportable segments.

 
Year Ended December 31,
 
2015
 
2014
 
2013
Rental and Other Revenues:
 
 
 
 
 
Office:
 
 
 
 
 
Atlanta, GA
$
108,590

 
$
96,075

 
$
80,330

Greensboro, NC
21,251

 
25,018

 
26,047

Greenville, SC
—

 
2,140

 
3,399

Memphis, TN
47,137

 
41,016

 
38,369

Nashville, TN
88,310

 
80,722

 
62,054

Orlando, FL
44,621

 
36,574

 
21,798

Pittsburgh, PA
59,392

 
56,692

 
56,125

Raleigh, NC
102,841

 
87,428

 
85,417

Richmond, VA
42,089

 
45,559

 
47,576

Tampa, FL
75,715

 
69,693

 
68,519

Total Office Segment
589,946

 
540,917

 
489,634

Other
14,725

 
14,954

 
15,374

Total Rental and Other Revenues
$
604,671

 
$
555,871

 
$
505,008


19.
Segment Information - Continued

 
Year Ended December 31,
 
2015
 
2014
 
2013
Net Operating Income:
 
 
 
 
 
Office:
 
 
 
 
 
Atlanta, GA
$
67,094

 
$
58,180

 
$
49,650

Greensboro, NC
13,395

 
15,784

 
16,788

Greenville, SC
—

 
1,150

 
1,893

Memphis, TN
29,534

 
24,376

 
22,133

Nashville, TN
62,387

 
55,354

 
42,598

Orlando, FL
25,524

 
21,286

 
12,048

Pittsburgh, PA
34,348

 
31,505

 
31,134

Raleigh, NC
72,981

 
61,317

 
60,075

Richmond, VA
27,922

 
30,021

 
32,454

Tampa, FL
45,447

 
40,875

 
41,573

Total Office Segment
378,632

 
339,848

 
310,346

Other
10,098

 
10,139

 
10,475

Total Net Operating Income
388,730

 
349,987

 
320,821

Reconciliation to income from continuing operations before disposition of investment properties and activity in unconsolidated affiliates:
 
 
 
 
 
Depreciation and amortization
(201,918
)
 
(180,637
)
 
(162,937
)
Impairments of real estate assets
—

 
(588
)
 
—

General and administrative expenses
(37,642
)
 
(35,258
)
 
(36,381
)
Interest expense
(86,052
)
 
(85,127
)
 
(91,886
)
Other income
1,726

 
2,431

 
3,312

Income from continuing operations before disposition of investment properties and activity in unconsolidated affiliates
$
64,844

 
$
50,808

 
$
32,929




19.
Segment Information - Continued

 
December 31,
 
2015
 
2014
 
 
 
(as revised)
Total Assets:
 
 
 
Office:
 
 
 
Atlanta, GA
$
1,013,226

 
$
700,085

Greensboro, NC
131,027

 
139,479

Memphis, TN
277,866

 
280,186

Nashville, TN
591,111

 
527,317

Orlando, FL
303,843

 
291,611

Pittsburgh, PA
339,186

 
334,539

Raleigh, NC
663,617

 
669,450

Richmond, VA
211,574

 
215,987

Tampa, FL
548,814

 
415,042

Total Office Segment
4,080,264

 
3,573,696

Other (1)
413,168

 
425,427

Total Assets
$
4,493,432

 
$
3,999,123


__________
(1)
Includes the Plaza assets, which are included in real estate and other assets, net, held for sale on our Consolidated Balance Sheets.
v3.3.1.900
Quarterly Financial Data (Unaudited)
 12 Months Ended
Dec. 31, 2015
Quarterly Financial Data [Abstract]  
Quarterly Financial Data (Unaudited)
Quarterly Financial Data (Unaudited)

The following tables set forth quarterly financial information of the Company:

 
Year Ended December 31, 2015
 
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
 
Total
Rental and other revenues (1)
$
145,236

 
$
148,543

 
$
150,766

 
$
160,126

 
$
604,671

 
 
 
 
 
 
 
 
 
 
Income from continuing operations (1)
16,920

 
22,221

 
27,352

 
19,028

 
85,521

Income from discontinued operations (1)
3,915

 
4,670

 
4,265

 
2,889

 
15,739

Net income
20,835

 
26,891

 
31,617

 
21,917

 
101,260

Net (income) attributable to noncontrolling interests in the Operating Partnership
(596
)
 
(782
)
 
(918
)
 
(622
)
 
(2,918
)
Net (income) attributable to noncontrolling interests in consolidated affiliates
(296
)
 
(328
)
 
(324
)
 
(316
)
 
(1,264
)
Dividends on Preferred Stock
(627
)
 
(626
)
 
(626
)
 
(627
)
 
(2,506
)
Net income available for common stockholders
$
19,316

 
$
25,155

 
$
29,749

 
$
20,352

 
$
94,572

Earnings per Common Share – basic:
 
 
 
 
 
 
 
 
 
Income from continuing operations available for common stockholders
$
0.17

 
$
0.22

 
$
0.27

 
$
0.18

 
$
0.84

Income from discontinued operations available for common stockholders
0.04

 
0.05

 
0.04

 
0.03

 
0.16

Net income available for common stockholders
$
0.21

 
$
0.27

 
$
0.31

 
$
0.21

 
$
1.00

Earnings per Common Share – diluted:
 
 
 
 
 
 
 
 
 
Income from continuing operations available for common stockholders
$
0.17

 
$
0.22

 
$
0.27

 
$
0.18

 
$
0.84

Income from discontinued operations available for common stockholders
0.04

 
0.05

 
0.04

 
0.03

 
0.16

Net income available for common stockholders
$
0.21

 
$
0.27

 
$
0.31

 
$
0.21

 
$
1.00


20.
Quarterly Financial Data (Unaudited) - Continued

 
Year Ended December 31, 2014
 
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
 
Total
Rental and other revenues (1)
$
135,821

 
$
139,956

 
$
139,370

 
$
140,724

 
$
555,871

 
 
 
 
 
 
 
 
 
 
Income from continuing operations (1)
8,979

 
20,374

 
49,483

 
18,151

 
96,987

Income from discontinued operations (1)
4,597

 
4,138

 
4,816

 
5,434

 
18,985

Net income
13,576

 
24,512

 
54,299

 
23,585

 
115,972

Net (income) attributable to noncontrolling interests in the Operating Partnership
(398
)
 
(742
)
 
(1,673
)
 
(729
)
 
(3,542
)
Net (income) attributable to noncontrolling interests in consolidated affiliates
(423
)
 
(438
)
 
(291
)
 
(314
)
 
(1,466
)
Dividends on Preferred Stock
(627
)
 
(627
)
 
(627
)
 
(626
)
 
(2,507
)
Net income available for common stockholders
$
12,128

 
$
22,705

 
$
51,708

 
$
21,916

 
$
108,457

Earnings per Common Share – basic:
 
 
 
 
 
 
 
 
 
Income from continuing operations available for common stockholders
$
0.09

 
$
0.21

 
$
0.52

 
$
0.18

 
$
1.00

Income from discontinued operations available for common stockholders
0.04

 
0.04

 
0.05

 
0.06

 
0.20

Net income available for common stockholders
$
0.13

 
$
0.25

 
$
0.57

 
$
0.24

 
$
1.20

Earnings per Common Share – diluted:
 
 
 
 
 
 
 
 
 
Income from continuing operations available for common stockholders
$
0.09

 
$
0.21

 
$
0.52

 
$
0.18

 
$
0.99

Income from discontinued operations available for common stockholders
0.04

 
0.04

 
0.05

 
0.06

 
0.20

Net income available for common stockholders
$
0.13

 
$
0.25

 
$
0.57

 
$
0.24

 
$
1.19

__________


20.
Quarterly Financial Data (Unaudited) – Continued
 
(1)
As a result of discontinued operations, the amounts presented may not equal the amounts previously reported in the most recent Form 10-Qs or prior 10-K for each period. Below is a reconciliation to the amounts previously reported:
 
 
Quarter Ended
 
March 31,
 
June 30,
 
September 30,
 
2015
 
2015
 
2015
Rental and other revenues, as reported
$
157,310

 
$
161,136

 
$
163,736

Discontinued operations
(12,074
)
 
(12,593
)
 
(12,970
)
Rental and other revenues, as adjusted
$
145,236

 
$
148,543

 
$
150,766

Income from continuing operations, as reported
$
20,835

 
$
26,891

 
$
31,617

Discontinued operations
(3,915
)
 
(4,670
)
 
(4,265
)
Income from continuing operations, as adjusted
$
16,920

 
$
22,221

 
$
27,352

Income from discontinued operations, as reported
$
—

 
$
—

 
$
—

Additional discontinued operations from properties sold subsequent to the respective reporting period
3,915

 
4,670

 
4,265

Income from discontinued operations, as adjusted
$
3,915

 
$
4,670

 
$
4,265


 
Quarter Ended
 
March 31,
 
June 30,
 
September 30,
 
December 31,
 
2014
 
2014
 
2014
 
2014
Rental and other revenues, as reported
$
148,453

 
$
152,722

 
$
152,629

 
$
154,664

Discontinued operations
(12,632
)
 
(12,766
)
 
(13,259
)
 
(13,940
)
Rental and other revenues, as adjusted
$
135,821

 
$
139,956

 
$
139,370

 
$
140,724

Income from continuing operations, as reported
$
13,192

 
$
24,512

 
$
54,299

 
$
23,585

Discontinued operations
(4,213
)
 
(4,138
)
 
(4,816
)
 
(5,434
)
Income from continuing operations, as adjusted
$
8,979

 
$
20,374

 
$
49,483

 
$
18,151

Income from discontinued operations, as reported
$
384

 
$
—

 
$
—

 
$
—

Additional discontinued operations from properties sold subsequent to the respective reporting period
4,213

 
4,138

 
4,816

 
5,434

Income from discontinued operations, as adjusted
$
4,597

 
$
4,138

 
$
4,816

 
$
5,434




20.
Quarterly Financial Data (Unaudited) - Continued

The following tables set forth quarterly financial information of the Operating Partnership:

 
Year Ended December 31, 2015
 
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
 
Total
Rental and other revenues (1)
$
145,236

 
$
148,543

 
$
150,766

 
$
160,126

 
$
604,671

 
 
 
 
 
 
 
 
 
 
Income from continuing operations (1)
16,920

 
22,221

 
27,352

 
19,028

 
85,521

Income from discontinued operations (1)
3,915

 
4,670

 
4,265

 
2,889

 
15,739

Net income
20,835

 
26,891

 
31,617

 
21,917

 
101,260

Net (income) attributable to noncontrolling interests in consolidated affiliates
(296
)
 
(328
)
 
(324
)
 
(316
)
 
(1,264
)
Distributions on Preferred Units
(627
)
 
(626
)
 
(626
)
 
(627
)
 
(2,506
)
Net income available for common unitholders
$
19,912

 
$
25,937

 
$
30,667

 
$
20,974

 
$
97,490

Earnings per Common Unit – basic:
 
 
 
 
 
 
 
 
 
Income from continuing operations available for common unitholders
$
0.17

 
$
0.22

 
$
0.27

 
$
0.18

 
$
0.84

Income from discontinued operations available for common unitholders
0.04

 
0.05

 
0.05

 
0.03

 
0.17

Net income available for common unitholders
$
0.21

 
$
0.27

 
$
0.32

 
$
0.21

 
$
1.01

Earnings per Common Unit – diluted:
 
 
 
 
 
 
 
 
 
Income from continuing operations available for common unitholders
$
0.17

 
$
0.22

 
$
0.27

 
$
0.18

 
$
0.84

Income from discontinued operations available for common unitholders
0.04

 
0.05

 
0.05

 
0.03

 
0.17

Net income available for common unitholders
$
0.21

 
$
0.27

 
$
0.32

 
$
0.21

 
$
1.01


20.
Quarterly Financial Data (Unaudited) - Continued

 
Year Ended December 31, 2014
 
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
 
Total
Rental and other revenues (1)
$
135,821

 
$
139,956

 
$
139,370

 
$
140,724

 
$
555,871

 
 
 
 
 
 
 
 
 
 
Income from continuing operations (1)
8,979

 
20,374

 
49,483

 
18,151

 
96,987

Income from discontinued operations (1)
4,597

 
4,138

 
4,816

 
5,434

 
18,985

Net income
13,576

 
24,512

 
54,299

 
23,585

 
115,972

Net (income) attributable to noncontrolling interests in consolidated affiliates
(423
)
 
(438
)
 
(291
)
 
(314
)
 
(1,466
)
Distributions on Preferred Units
(627
)
 
(627
)
 
(627
)
 
(626
)
 
(2,507
)
Net income available for common unitholders
$
12,526

 
$
23,447

 
$
53,381

 
$
22,645

 
$
111,999

Earnings per Common Unit – basic:
 
 
 
 
 
 
 
 
 
Income from continuing operations available for common unitholders
$
0.09

 
$
0.21

 
$
0.52

 
$
0.18

 
$
1.00

Income from discontinued operations available for common unitholders
0.05

 
0.04

 
0.05

 
0.06

 
0.20

Net income available for common unitholders
$
0.14

 
$
0.25

 
$
0.57

 
$
0.24

 
$
1.20

Earnings per Common Unit – diluted:
 
 
 
 
 
 
 
 
 
Income from continuing operations available for common unitholders
$
0.09

 
$
0.21

 
$
0.52

 
$
0.18

 
$
1.00

Income from discontinued operations available for common unitholders
0.05

 
0.04

 
0.05

 
0.06

 
0.20

Net income available for common unitholders
$
0.14

 
$
0.25

 
$
0.57

 
$
0.24

 
$
1.20

__________
 

20.
Quarterly Financial Data (Unaudited) – Continued
 
(1)
As a result of discontinued operations, the amounts presented may not equal the amounts previously reported in the most recent Form 10-Qs or prior 10-K for each period. Below is a reconciliation to the amounts previously reported:

 
Quarter Ended
 
March 31,
 
June 30,
 
September 30,
 
2015
 
2015
 
2015
Rental and other revenues, as reported
$
157,310

 
$
161,136

 
$
163,736

Discontinued operations
(12,074
)
 
(12,593
)
 
(12,970
)
Rental and other revenues, as adjusted
$
145,236

 
$
148,543

 
$
150,766

Income from continuing operations, as reported
$
20,835

 
$
26,891

 
$
31,617

Discontinued operations
(3,915
)
 
(4,670
)
 
(4,265
)
Income from continuing operations, as adjusted
$
16,920

 
$
22,221

 
$
27,352

Income from discontinued operations, as reported
$
—

 
$
—

 
$
—

Additional discontinued operations from properties sold subsequent to the respective reporting period
3,915

 
4,670

 
4,265

Income from discontinued operations, as adjusted
$
3,915

 
$
4,670

 
$
4,265


 
Quarter Ended
 
March 31,
 
June 30,
 
September 30,
 
December 31,
 
2014
 
2014
 
2014
 
2014
Rental and other revenues, as reported
$
148,453

 
$
152,722

 
$
152,629

 
$
154,664

Discontinued operations
(12,632
)
 
(12,766
)
 
(13,259
)
 
(13,940
)
Rental and other revenues, as adjusted
$
135,821

 
$
139,956

 
$
139,370

 
$
140,724

Income from continuing operations, as reported
$
13,192

 
$
24,512

 
$
54,299

 
$
23,585

Discontinued operations
(4,213
)
 
(4,138
)
 
(4,816
)
 
(5,434
)
Income from continuing operations, as adjusted
$
8,979

 
$
20,374

 
$
49,483

 
$
18,151

Income from discontinued operations, as reported
$
384

 
$
—

 
$
—

 
$
—

Additional discontinued operations from properties sold subsequent to the respective reporting period
4,213

 
4,138

 
4,816

 
5,434

Income from discontinued operations, as adjusted
$
4,597

 
$
4,138

 
$
4,816

 
$
5,434
v3.3.1.900
Subsequent Events
 12 Months Ended
Dec. 31, 2015
Subsequent Events [Abstract]  
Subsequent Events
Subsequent Events

We entered into an agreement, dated as of January 29, 2016, to sell a 32,000 square foot building for $4.7 million. The buyer, which currently leases 79% of the building, is a family business controlled by a director of the Company. The sale price exceeds the value set forth in an appraisal performed by a reputable commercial real estate services firm that has no relationship with the director or any of his affiliates. We expect to record a gain of approximately $1.0 million upon completion of the sale, which is expected to close in the second quarter of 2016.

On January 4, 2016, we announced our agreement to sell the Plaza assets in Kansas City for $660.0 million. The buyer is Country Club Plaza KC Partners LLC, a joint venture between affiliates of Taubman Centers, Inc. (NYSE:TCO) and The Macerich Company (NYSE:MAC). The Plaza assets consist of 18 properties encompassing 776,000 square feet of in-service retail space, 468,000 square feet of in-service office space and a 28,000 square foot retail redevelopment project.

The parties have entered into a series of definitive agreements, dated as of December 21, 2015, relating to the sale of the Plaza assets. The sales, which are subject to customary closing conditions, are scheduled to close on March 1, 2016. The buyer’s contractual due diligence investigation period ended on December 31, 2015. The buyer has posted earnest money deposits, held by a third party, totaling $25.0 million that are non-refundable and the buyer would be obligated to pay us an additional $25.0 million in the event of a default, except in limited circumstances.
v3.3.1.900
Schedule II
 12 Months Ended
Dec. 31, 2015
Valuation and Qualifying Accounts [Abstract]  
Schedule of Valuation and Qualifying Accounts
SCHEDULE II
(in thousands)

The following table sets forth the activity of allowance for doubtful accounts:

 
Balance at December 31, 2014
 
Additions
 
Deductions
 
Balance at December 31, 2015
Allowance for Doubtful Accounts - Straight-Line Rent
$
316

 
$
1,412

 
$
(1,471
)
 
$
257

Allowance for Doubtful Accounts - Accounts Receivable
1,314

 
1,141

 
(1,527
)
 
928

Allowance for Doubtful Accounts - Notes Receivable
275

 
12

 
—

 
287

Totals
$
1,905

 
$
2,565

 
$
(2,998
)
 
$
1,472



 
Balance at December 31, 2013
 
Additions
 
Deductions
 
Balance at December 31, 2014
Allowance for Doubtful Accounts - Straight-Line Rent
$
601

 
$
1,271

 
$
(1,556
)
 
$
316

Allowance for Doubtful Accounts - Accounts Receivable
1,648

 
1,342

 
(1,676
)
 
1,314

Allowance for Doubtful Accounts - Notes Receivable
302

 
—

 
(27
)
 
275

Totals
$
2,551

 
$
2,613

 
$
(3,259
)
 
$
1,905



 
Balance at December 31, 2012
 
Additions
 
Deductions
 
Balance at December 31, 2013
Allowance for Doubtful Accounts - Straight-Line Rent
$
381

 
$
496

 
$
(276
)
 
$
601

Allowance for Doubtful Accounts - Accounts Receivable
2,848

 
851

 
(2,051
)
 
1,648

Allowance for Doubtful Accounts - Notes Receivable
182

 
120

 
—

 
302

Totals
$
3,411

 
$
1,467

 
$
(2,327
)
 
$
2,551
v3.3.1.900
Schedule III
 12 Months Ended
Dec. 31, 2015
SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Abstract]  
Schedule Of Real Estate And Accumulated Depreciation Note To Schedule III [Text Block]
HIGHWOODS PROPERTIES, INC.
HIGHWOODS REALTY LIMITED PARTNERSHIP

NOTE TO SCHEDULE III
(in thousands)

The following table sets forth the activity of real estate assets and accumulated depreciation:
 
 
December 31,
 
2015
 
2014
 
2013
 
 
 
(as revised)
 
(as revised)
Real estate assets:
 
 
 
 
 
Beginning balance
$
4,271,966

 
$
4,215,275

 
$
3,510,126

Additions:
 
 
 
 
 
Acquisitions, development and improvements
708,793

 
282,105

 
735,183

Cost of real estate sold and retired
(64,901
)
 
(225,414
)
 
(30,034
)
Ending balance (a)
$
4,915,858

 
$
4,271,966

 
$
4,215,275

Accumulated depreciation:
 
 
 
 
 
Beginning balance
$
1,024,936

 
$
977,074

 
$
868,276

Depreciation expense
168,663

 
154,448

 
138,163

Real estate sold and retired
(55,221
)
 
(106,586
)
 
(29,365
)
Ending balance (b)
$
1,138,378

 
$
1,024,936

 
$
977,074


(a)
Reconciliation of total real estate assets to balance sheet caption:
 
2015
 
2014
 
2013
 
 
 
(as revised)
 
(as revised)
Total per Schedule III
$
4,915,858

 
$
4,271,966

 
$
4,215,275

Development in-process exclusive of land included in Schedule III
194,050

 
201,409

 
44,621

Real estate assets, net, held for sale
(340,581
)
 
(331,813
)
 
(334,722
)
Total real estate assets
$
4,769,327

 
$
4,141,562

 
$
3,925,174


(b)
Reconciliation of total accumulated depreciation to balance sheet caption:
 
2015
 
2014
 
2013
 
 
 
(as revised)
 
(as revised)
Total per Schedule III
$
1,138,378

 
$
1,024,936

 
$
977,074

Real estate assets, net, held for sale
(131,274
)
 
(131,419
)
 
(124,883
)
Total accumulated depreciation
$
1,007,104

 
$
893,517

 
$
852,191
Real Estate and Accumulated Depreciation Disclosure [Text Block]
HIGHWOODS PROPERTIES, INC.
HIGHWOODS REALTY LIMITED PARTNERSHIP
 
SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION
(in thousands)
 
December 31, 2015

 
 
 
 
 
 
Initial Costs
 
Costs Capitalized
Subsequent to
Acquisition
 
Gross Value at Close of Period
 
 
 
 
 
 
Description
 
Property
Type
 
2015
Encumbrance
 
Land
 
Bldg &
Improv
 
Land
 
Bldg &
Improv
 
Land
 
Bldg &
Improv
 
Total
Assets (2)
 
Accumulated
Depreciation
 
Date of
Construction
 
Life on
Which
Depreciation
is
Calculated
Atlanta, GA
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1700 Century Circle
 
Office
 
 
 
$
—

 
$
2,482

 
$
2

 
$
1,240

 
$
2

 
$
3,722

 
$
3,724

 
$
920

 
1983
 
 5-40 yrs.
1800 Century Boulevard
 
Office
 
 
 
1,444

 
29,081

 
—

 
13,556

 
1,444

 
42,637

 
44,081

 
22,790

 
1975
 
 5-40 yrs.
1825 Century Parkway
 
Office
 
 
 
864

 
—

 
303

 
14,439

 
1,167

 
14,439

 
15,606

 
5,039

 
2002
 
 5-40 yrs.
1875 Century Boulevard
 
Office
 
 
 
—

 
8,924

 
—

 
4,431

 
—

 
13,355

 
13,355

 
4,878

 
1976
 
 5-40 yrs.
1900 Century Boulevard
 
Office
 
 
 
—

 
4,744

 
—

 
771

 
—

 
5,515

 
5,515

 
2,793

 
1971
 
 5-40 yrs.
2200 Century Parkway
 
Office
 
 
 
—

 
14,432

 
—

 
4,566

 
—

 
18,998

 
18,998

 
9,069

 
1971
 
 5-40 yrs.
2400 Century Parkway
 
Office
 
 
 
—

 
—

 
406

 
12,730

 
406

 
12,730

 
13,136

 
5,532

 
1998
 
 5-40 yrs.
2500 Century Parkway
 
Office
 
 
 
—

 
—

 
328

 
14,423

 
328

 
14,423

 
14,751

 
5,577

 
2005
 
 5-40 yrs.
2500/2635 Parking Garage
 
Office
 
 
 
—

 
—

 
—

 
6,317

 
—

 
6,317

 
6,317

 
1,592

 
2005
 
 5-40 yrs.
2600 Century Parkway
 
Office
 
 
 
—

 
10,679

 
—

 
3,962

 
—

 
14,641

 
14,641

 
7,819

 
1973
 
 5-40 yrs.
2635 Century Parkway
 
Office
 
 
 
—

 
21,643

 
—

 
4,139

 
—

 
25,782

 
25,782

 
11,767

 
1980
 
 5-40 yrs.
2800 Century Parkway
 
Office
 
 
 
—

 
20,449

 
—

 
11,876

 
—

 
32,325

 
32,325

 
13,102

 
1983
 
 5-40 yrs.
50 Glenlake
 
Office
 
 
 
2,500

 
20,006

 
—

 
3,491

 
2,500

 
23,497

 
25,997

 
10,569

 
1997
 
 5-40 yrs.
Bluegrass Valley - Land
 
Industrial
 
 
 
19,711

 
—

 
(17,295
)
 
—

 
2,416

 
—

 
2,416

 
—

 
N/A
 
N/A
Century Plaza I
 
Office
 
 
 
1,290

 
8,567

 
—

 
4,191

 
1,290

 
12,758

 
14,048

 
5,171

 
1981
 
 5-40 yrs.
Century Plaza II
 
Office
 
 
 
1,380

 
7,733

 
—

 
2,805

 
1,380

 
10,538

 
11,918

 
4,154

 
1984
 
 5-40 yrs.
Federal Aviation Administration
 
Office
 
 
 
1,196

 
—

 
1,416

 
15,188

 
2,612

 
15,188

 
17,800

 
4,015

 
2009
 
 5-40 yrs.
Henry County - Land
 
Industrial
 
 
 
3,010

 
—

 
13

 
—

 
3,023

 
—

 
3,023

 
—

 
N/A
 
N/A
Highwoods Ctr III at Tradeport
 
Office
 
 
 
409

 
—

 
130

 
4,040

 
539

 
4,040

 
4,579

 
1,126

 
2001
 
 5-40 yrs.
5405 Windward Parkway
 
Office
 
 
 
3,342

 
32,111

 
—

 
18,716

 
3,342

 
50,827

 
54,169

 
15,765

 
1998
 
 5-40 yrs.
Riverpoint - Land
 
Industrial
 
 
 
7,250

 
—

 
3,913

 
2,549

 
11,163

 
2,549

 
13,712

 
391

 
N/A
 
5-40 yrs.
Riverwood 100
 
Office
 
 
 
5,785

 
64,913

 
(29
)
 
11,937

 
5,756

 
76,850

 
82,606

 
10,357

 
1989
 
5-40 yrs.
South Park Residential - Land
 
Other
 
 
 
50

 
—

 
7

 
—

 
57

 
—

 
57

 
—

 
N/A
 
N/A
South Park Site - Land
 
Industrial
 
 
 
1,204

 
—

 
754

 
—

 
1,958

 
—

 
1,958

 
—

 
N/A
 
N/A
Tradeport - Land
 
Industrial
 
 
 
5,243

 
—

 
(4,559
)
 
—

 
684

 
—

 
684

 
—

 
N/A
 
N/A
Two Point Royal
 
Office
 
 
 
1,793

 
14,964

 
—

 
3,298

 
1,793

 
18,262

 
20,055

 
7,722

 
1997
 
5-40 yrs.
HIGHWOODS PROPERTIES, INC.
HIGHWOODS REALTY LIMITED PARTNERSHIP
 
SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION (Continued)
 
 
 
 
 
 
Initial Costs
 
Costs Capitalized
Subsequent to
Acquisition
 
Gross Value at Close of Period
 
 
 
 
 
 
Description
 
Property
Type
 
2015
Encumbrance
 
Land
 
Bldg &
Improv
 
Land
 
Bldg &
Improv
 
Land
 
Bldg &
Improv
 
Total
Assets (2)
 
Accumulated
Depreciation
 
Date of
Construction
 
Life on
Which
Depreciation
is
Calculated
Two Alliance Center
 
Office
 
 
 
9,579

 
125,549

 
—

 
3,350

 
9,579

 
128,899

 
138,478

 
16,372

 
2009
 
5-40 yrs.
One Alliance Center
 
Office
 
 
 
14,775

 
123,071

 
—

 
10,410

 
14,775

 
133,481

 
148,256

 
11,405

 
2001
 
5-40 yrs.
10 Glenlake North
 
Office
 
 
 
5,349

 
26,334

 
—

 
638

 
5,349

 
26,972

 
32,321

 
3,693

 
2000
 
5-40 yrs.
10 Glenlake South
 
Office
 
 
 
5,103

 
22,811

 
—

 
2,437

 
5,103

 
25,248

 
30,351

 
2,468

 
1999
 
5-40 yrs.
Riverwood 300 Land
 
Office
 
 
 
—

 
—

 
400

 
—

 
400

 
—

 
400

 
—

 
N/A
 
N/A
Monarch Tower
 
Office
 
 
 
—

 
—

 
22,717

 
143,068

 
22,717

 
143,068

 
165,785

 
2,090

 
1997
 
5-40 yrs.
Monarch Plaza
 
Office
 
 
 
—

 
—

 
27,678

 
88,962

 
27,678

 
88,962

 
116,640

 
1,191

 
1983
 
5-40 yrs.
Kansas City, MO
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Country Club Plaza
 
Retail
 
 
 
14,286

 
146,879

 
(198
)
 
139,896

 
14,088

 
286,775

 
300,863

 
117,945

 
1920-2002
 
5-40 yrs.
Land - Hotel Land - Valencia
 
Office
 
 
 
978

 
—

 
111

 
—

 
1,089

 
—

 
1,089

 
—

 
N/A
 
N/A
Park Plaza Building
 
Office
 
 
 
1,384

 
6,410

 
—

 
2,842

 
1,384

 
9,252

 
10,636

 
3,713

 
1983
 
 5-40 yrs.
Two Emanuel Cleaver Boulevard
 
Office
 
 
 
984

 
4,402

 
—

 
2,192

 
984

 
6,594

 
7,578

 
2,930

 
1983
 
 5-40 yrs.
Valencia Place Office
 
Office
 
 
 
1,576

 
—

 
970

 
34,270

 
2,546

 
34,270

 
36,816

 
12,519

 
1999
 
 5-40 yrs.
Memphis, TN
 
 
 
 
 
 
 
 
 


 
 
 
 
 
 
 
 
 
 
 
 
 
 
3400 Players Club Parkway
 
Office
 
 
 
1,005

 
—

 
207

 
6,221

 
1,212

 
6,221

 
7,433

 
2,533

 
1997
 
 5-40 yrs.
Triad Centre I
 
Office
 
 
 
2,340

 
11,385

 
(849
)
 
4,663

 
1,491

 
16,048

 
17,539

 
6,467

 
1985
 
 5-40 yrs.
Triad Centre II
 
Office
 
 
 
1,980

 
8,677

 
(404
)
 
4,564

 
1,576

 
13,241

 
14,817

 
4,634

 
1987
 
 5-40 yrs.
Atrium I & II
 
Office
 
 
 
1,570

 
6,253

 
—

 
2,950

 
1,570

 
9,203

 
10,773

 
4,245

 
1984
 
 5-40 yrs.
Centrum
 
Office
 
 
 
1,013

 
5,580

 
—

 
2,563

 
1,013

 
8,143

 
9,156

 
4,030

 
1979
 
 5-40 yrs.
Comcast
 
Office
 
 
 
946

 
—

 
—

 
8,620

 
946

 
8,620

 
9,566

 
3,036

 
2008
 
 5-40 yrs.
International Place Phase II
 
Office
 
 
 
4,884

 
27,782

 
—

 
5,227

 
4,884

 
33,009

 
37,893

 
15,842

 
1988
 
 5-40 yrs.
PennMarc Centre
 
Office
 
 
 
3,607

 
10,240

 
—

 
3,008

 
3,607

 
13,248

 
16,855

 
3,094

 
2008
 
 5-40 yrs.
Shadow Creek I
 
Office
 
 
 
924

 
—

 
466

 
7,302

 
1,390

 
7,302

 
8,692

 
2,710

 
2000
 
 5-40 yrs.
Shadow Creek II
 
Office
 
 
 
734

 
—

 
467

 
6,901

 
1,201

 
6,901

 
8,102

 
2,521

 
2001
 
 5-40 yrs.
Southwind Office Center A
 
Office
 
 
 
1,004

 
5,694

 
282

 
1,304

 
1,286

 
6,998

 
8,284

 
3,337

 
1991
 
 5-40 yrs.
Southwind Office Center B
 
Office
 
 
 
1,366

 
7,754

 
—

 
1,261

 
1,366

 
9,015

 
10,381

 
4,321

 
1990
 
 5-40 yrs.
Southwind Office Center C
 
Office
 
 
 
1,070

 
—

 
221

 
5,355

 
1,291

 
5,355

 
6,646

 
2,396

 
1998
 
 5-40 yrs.
Southwind Office Center D
 
Office
 
 
 
744

 
—

 
193

 
5,639

 
937

 
5,639

 
6,576

 
2,316

 
1999
 
 5-40 yrs.
Colonnade
 
Office
 
 
 
1,300

 
6,481

 
267

 
2,226

 
1,567

 
8,707

 
10,274

 
3,343

 
1998
 
 5-40 yrs.
ThyssenKrupp Elevator Mfg Headquarters
 
Office
 
 
 
1,040

 
—

 
25

 
8,342

 
1,065

 
8,342

 
9,407

 
3,298

 
2007
 
 5-40 yrs.
Crescent Center
 
Office
 
 
 
7,875

 
32,756

 
(547
)
 
8,774

 
7,328

 
41,530

 
48,858

 
7,410

 
1986
 
 5-40 yrs.
HIGHWOODS PROPERTIES, INC.
HIGHWOODS REALTY LIMITED PARTNERSHIP
 
SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION (Continued)
 
 
 
 
 
 
Initial Costs
 
Costs Capitalized
Subsequent to
Acquisition
 
Gross Value at Close of Period
 
 
 
 
 
 
Description
 
Property
Type
 
2015
Encumbrance
 
Land
 
Bldg &
Improv
 
Land
 
Bldg &
Improv
 
Land
 
Bldg &
Improv
 
Total
Assets (2)
 
Accumulated
Depreciation
 
Date of
Construction
 
Life on
Which
Depreciation
is
Calculated
Southwind - Land
 
Office
 
 
 
3,662

 
—

 
(1,477
)
 
—

 
2,185

 
—

 
2,185

 
—

 
N/A
 
N/A
Triad Centre III
 
Office
 
 
 
1,253

 
—

 
—

 
36,795

 
1,253

 
36,795

 
38,048

 
7,136

 
2009
 
 5-40 yrs.
Capital Grille
 
Office
 
 
 
—

 
—

 
311

 
3,258

 
311

 
3,258

 
3,569

 
506

 
2014
 
 5-40 yrs.
Seasons 52
 
Office
 
 
 
—

 
—

 
320

 
3,741

 
320

 
3,741

 
4,061

 
570

 
2014
 
 5-40 yrs.
International Place IV
 
Office
 
 
 
—

 
—

 
4,940

 
49,141

 
4,940

 
49,141

 
54,081

 
1,124

 
2015
 
 5-40 yrs.
Nashville, TN
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
3322 West End
 
Office
 
 
 
3,025

 
27,490

 
—

 
3,658

 
3,025

 
31,148

 
34,173

 
12,830

 
1986
 
 5-40 yrs.
3401 West End
 
Office
 
 
 
5,862

 
22,917

 
—

 
3,402

 
5,862

 
26,319

 
32,181

 
13,300

 
1982
 
 5-40 yrs.
5310 Maryland Way
 
Office
 
 
 
1,863

 
7,201

 
—

 
3,651

 
1,863

 
10,852

 
12,715

 
4,037

 
1994
 
 5-40 yrs.
Cool Springs 1 & 2 Deck
 
Office
 
 
 
—

 
—

 
—

 
3,989

 
—

 
3,989

 
3,989

 
809

 
2007
 
 5-40 yrs.
Cool Springs 3 & 4 Deck
 
Office
 
 
 
—

 
—

 
—

 
4,461

 
—

 
4,461

 
4,461

 
969

 
2007
 
 5-40 yrs.
Cool Springs I
 
Office
 
 
 
1,583

 
—

 
15

 
14,069

 
1,598

 
14,069

 
15,667

 
5,571

 
1999
 
 5-40 yrs.
Cool Springs II
 
Office
 
 
 
1,824

 
—

 
346

 
17,826

 
2,170

 
17,826

 
19,996

 
6,413

 
1999
 
 5-40 yrs.
Cool Springs III
 
Office
 
 
 
1,631

 
—

 
804

 
15,602

 
2,435

 
15,602

 
18,037

 
3,809

 
2006
 
 5-40 yrs.
Cool Springs IV
 
Office
 
 
 
1,715

 
—

 
—

 
19,303

 
1,715

 
19,303

 
21,018

 
3,785

 
2008
 
 5-40 yrs.
Cool Springs V – Healthways
 
Office
 
 
 
3,688

 
—

 
295

 
52,959

 
3,983

 
52,959

 
56,942

 
13,966

 
2007
 
 5-40 yrs.
Harpeth On The Green II
 
Office
 
 
 
1,419

 
5,677

 
—

 
1,955

 
1,419

 
7,632

 
9,051

 
3,857

 
1984
 
 5-40 yrs.
Harpeth On The Green III
 
Office
 
 
 
1,660

 
6,649

 
—

 
2,222

 
1,660

 
8,871

 
10,531

 
3,852

 
1987
 
 5-40 yrs.
Harpeth On The Green IV
 
Office
 
 
 
1,713

 
6,842

 
—

 
1,674

 
1,713

 
8,516

 
10,229

 
4,028

 
1989
 
 5-40 yrs.
Harpeth On The Green V
 
Office
 
 
 
662

 
—

 
197

 
5,427

 
859

 
5,427

 
6,286

 
2,090

 
1998
 
 5-40 yrs.
Hickory Trace
 
Office
 
 
 
1,164

 
—

 
164

 
4,473

 
1,328

 
4,473

 
5,801

 
1,568

 
2001
 
5-40 yrs.
Highwoods Plaza I
 
Office
 
 
 
1,552

 
—

 
307

 
8,844

 
1,859

 
8,844

 
10,703

 
4,192

 
1996
 
 5-40 yrs.
Highwoods Plaza II
 
Office
 
 
 
1,448

 
—

 
307

 
8,805

 
1,755

 
8,805

 
10,560

 
2,953

 
1997
 
 5-40 yrs.
Seven Springs - Land II
 
Office
 
 
 
3,715

 
—

 
(3,715
)
 
—

 
—

 
—

 
—

 
—

 
N/A
 
N/A
Seven Springs I
 
Office
 
 
 
2,076

 
—

 
592

 
12,327

 
2,668

 
12,327

 
14,995

 
4,181

 
2002
 
 5-40 yrs.
SouthPointe
 
Office
 
 
 
1,655

 
—

 
310

 
7,022

 
1,965

 
7,022

 
8,987

 
3,031

 
1998
 
 5-40 yrs.
The Ramparts of Brentwood
 
Office
 
 
 
2,394

 
12,806

 
—

 
2,414

 
2,394

 
15,220

 
17,614

 
6,485

 
1986
 
 5-40 yrs.
Westwood South
 
Office
 
 
 
2,106

 
—

 
382

 
10,247

 
2,488

 
10,247

 
12,735

 
3,756

 
1999
 
 5-40 yrs.
100 Winners Circle
 
Office
 
 
 
1,497

 
7,258

 
—

 
1,924

 
1,497

 
9,182

 
10,679

 
4,124

 
1987
 
 5-40 yrs.
The Pinnacle at Symphony Place
 
Office
 
 
 
—

 
141,469

 
—

 
5,748

 
—

 
147,217

 
147,217

 
12,358

 
2010
 
 5-40 yrs.
Seven Springs East
 
Office
 
 
 
—

 
—

 
2,525

 
37,587

 
2,525

 
37,587

 
40,112

 
2,529

 
2013
 
 5-40 yrs.
HIGHWOODS PROPERTIES, INC.
HIGHWOODS REALTY LIMITED PARTNERSHIP
 
SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION (Continued)
 
 
 
 
 
 
Initial Costs
 
Costs Capitalized
Subsequent to
Acquisition
 
Gross Value at Close of Period
 
 
 
 
 
 
Description
 
Property
Type
 
2015
Encumbrance
 
Land
 
Bldg &
Improv
 
Land
 
Bldg &
Improv
 
Land
 
Bldg &
Improv
 
Total
Assets (2)
 
Accumulated
Depreciation
 
Date of
Construction
 
Life on
Which
Depreciation
is
Calculated
The Shops at Seven Springs
 
Office
 
 
 
—

 
—

 
803

 
8,223

 
803

 
8,223

 
9,026

 
674

 
2013
 
 5-40 yrs.
Orlando, FL
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Berkshire at MetroCenter
 
Office
 
 
 
1,265

 
—

 
672

 
11,810

 
1,937

 
11,810

 
13,747

 
2,969

 
2007
 
 5-40 yrs.
Capital Plaza III - Land
 
Office
 
 
 
2,994

 
—

 
18

 
—

 
3,012

 
—

 
3,012

 
—

 
N/A
 
 N/A
Eola Park - Land
 
Office
 
 
 
2,027

 
—

 
—

 
—

 
2,027

 
—

 
2,027

 
—

 
N/A
 
 N/A
Oxford - Land
 
Office
 
 
 
1,100

 
—

 
51

 
—

 
1,151

 
—

 
1,151

 
—

 
N/A
 
 N/A
Stratford - Land
 
Office
 
 
 
2,034

 
—

 
(148
)
 
—

 
1,886

 
—

 
1,886

 
—

 
N/A
 
 N/A
Windsor at MetroCenter
 
Office
 
 
 
—

 
—

 
2,060

 
8,353

 
2,060

 
8,353

 
10,413

 
2,553

 
2002
 
 5-40 yrs.
The 1800 Eller Drive Building
 
Office
 
 
 
—

 
9,851

 
—

 
3,461

 
—

 
13,312

 
13,312

 
7,122

 
1983
 
 5-40 yrs.
Seaside Plaza
 
Office
 
 
 
3,893

 
29,541

 
—

 
4,127

 
3,893

 
33,668

 
37,561

 
3,368

 
1982
 
 5-40 yrs.
Capital Plaza Two
 
Office
 
 
 
4,346

 
43,394

 
—

 
2,491

 
4,346

 
45,885

 
50,231

 
3,822

 
1999
 
 5-40 yrs.
Capital Plaza One
 
Office
 
 
 
3,482

 
27,321

 
—

 
1,693

 
3,482

 
29,014

 
32,496

 
3,119

 
1975
 
 5-40 yrs.
Landmark Center Two
 
Office
 
 
 
4,743

 
22,031

 
—

 
3,579

 
4,743

 
25,610

 
30,353

 
2,545

 
1985
 
 5-40 yrs.
Landmark Center One
 
Office
 
 
 
6,207

 
22,655

 
—

 
3,031

 
6,207

 
25,686

 
31,893

 
2,345

 
1983
 
 5-40 yrs.
Lincoln Plaza
 
Office
 
 
 
3,490

 
56,079

 
—

 
611

 
3,490

 
56,690

 
60,180

 
2,130

 
2000
 
 5-40 yrs.
Eola
 
Office
 
19,199
 
—

 
—

 
3,758

 
11,160

 
3,758

 
11,160

 
14,918

 
716

 
1969
 
 5-40 yrs.
Greensboro, NC
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
6348 Burnt Poplar
 
Industrial
 
 
 
724

 
2,900

 
—

 
254

 
724

 
3,154

 
3,878

 
1,660

 
1990
 
 5-40 yrs.
6350 Burnt Poplar
 
Industrial
 
 
 
341

 
1,374

 
—

 
343

 
341

 
1,717

 
2,058

 
804

 
1992
 
 5-40 yrs.
420 Gallimore Dairy Road
 
Office
 
 
 
379

 
1,516

 
—

 
619

 
379

 
2,135

 
2,514

 
1,006

 
1990
 
 5-40 yrs.
418 Gallimore Dairy Road
 
Office
 
 
 
462

 
1,849

 
—

 
589

 
462

 
2,438

 
2,900

 
1,207

 
1986
 
 5-40 yrs.
416 Gallimore Dairy Road
 
Office
 
 
 
322

 
1,293

 
—

 
417

 
322

 
1,710

 
2,032

 
814

 
1986
 
 5-40 yrs.
7031 Albert Pick Road
 
Office
 
 
 
510

 
2,921

 
—

 
2,587

 
510

 
5,508

 
6,018

 
2,700

 
1986
 
 5-40 yrs.
7029 Albert Pick Road
 
Office
 
 
 
739

 
3,237

 
—

 
1,837

 
739

 
5,074

 
5,813

 
2,443

 
1988
 
 5-40 yrs.
7025 Albert Pick Road
 
Office
 
 
 
2,393

 
9,576

 
—

 
5,190

 
2,393

 
14,766

 
17,159

 
6,988

 
1990
 
 5-40 yrs.
7027 Albert Pick Road
 
Office
 
 
 
850

 
—

 
699

 
4,531

 
1,549

 
4,531

 
6,080

 
1,851

 
1997
 
 5-40 yrs.
7009 Albert Pick Road
 
Industrial
 
 
 
224

 
1,068

 
—

 
275

 
224

 
1,343

 
1,567

 
629

 
1990
 
 5-40 yrs.
426 Gallimore Dairy Road
 
Office
 
 
 
465

 
—

 
380

 
1,253

 
845

 
1,253

 
2,098

 
542

 
1996
 
 5-40 yrs.
422 Gallimore Dairy Road
 
Industrial
 
 
 
145

 
1,081

 
—

 
377

 
145

 
1,458

 
1,603

 
743

 
1990
 
 5-40 yrs.
406 Gallimore Dairy Road
 
Office
 
 
 
265

 
—

 
270

 
911

 
535

 
911

 
1,446

 
471

 
1996
 
 5-40 yrs.
7021 Albert Pick Road
 
Industrial
 
 
 
237

 
1,103

 
—

 
286

 
237

 
1,389

 
1,626

 
698

 
1985
 
 5-40 yrs.
HIGHWOODS PROPERTIES, INC.
HIGHWOODS REALTY LIMITED PARTNERSHIP
 
SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION (Continued)
 
 
 
 
 
 
Initial Costs
 
Costs Capitalized
Subsequent to
Acquisition
 
Gross Value at Close of Period
 
 
 
 
 
 
Description
 
Property
Type
 
2015
Encumbrance
 
Land
 
Bldg &
Improv
 
Land
 
Bldg &
Improv
 
Land
 
Bldg &
Improv
 
Total
Assets (2)
 
Accumulated
Depreciation
 
Date of
Construction
 
Life on
Which
Depreciation
is
Calculated
7019 Albert Pick Road
 
Industrial
 
 
 
192

 
946

 
—

 
310

 
192

 
1,256

 
1,448

 
552

 
1985
 
 5-40 yrs.
7015 Albert Pick Road
 
Industrial
 
 
 
305

 
1,219

 
—

 
283

 
305

 
1,502

 
1,807

 
757

 
1985
 
 5-40 yrs.
7017 Albert Pick Road
 
Industrial
 
 
 
225

 
928

 
—

 
459

 
225

 
1,387

 
1,612

 
571

 
1985
 
 5-40 yrs.
7011 Albert Pick Road
 
Industrial
 
 
 
171

 
777

 
—

 
380

 
171

 
1,157

 
1,328

 
541

 
1990
 
 5-40 yrs.
424 Gallimore Dairy Road
 
Office
 
 
 
271

 
—

 
239

 
818

 
510

 
818

 
1,328

 
340

 
1997
 
 5-40 yrs.
410 Gallimore Dairy Road
 
Industrial
 
 
 
356

 
1,613

 
—

 
734

 
356

 
2,347

 
2,703

 
1,058

 
1985
 
 5-40 yrs.
412 Gallimore Dairy Road
 
Industrial
 
 
 
374

 
1,523

 
—

 
573

 
374

 
2,096

 
2,470

 
996

 
1985
 
 5-40 yrs.
408 Gallimore Dairy Road
 
Industrial
 
 
 
341

 
1,486

 
—

 
768

 
341

 
2,254

 
2,595

 
1,189

 
1986
 
 5-40 yrs.
414 Gallimore Dairy Road
 
Industrial
 
 
 
659

 
2,676

 
—

 
958

 
659

 
3,634

 
4,293

 
1,821

 
1988
 
 5-40 yrs.
237 Burgess Road
 
Industrial
 
 
 
860

 
2,919

 
—

 
689

 
860

 
3,608

 
4,468

 
1,990

 
1986
 
 5-40 yrs.
235 Burgess Road
 
Industrial
 
 
 
1,302

 
4,392

 
—

 
1,167

 
1,302

 
5,559

 
6,861

 
2,664

 
1987
 
 5-40 yrs.
241 Burgess Road
 
Industrial
 
 
 
450

 
1,517

 
—

 
871

 
450

 
2,388

 
2,838

 
1,302

 
1988
 
 5-40 yrs.
243 Burgess Road
 
Industrial
 
 
 
452

 
1,514

 
—

 
169

 
452

 
1,683

 
2,135

 
906

 
1988
 
 5-40 yrs.
496 Gallimore Dairy Road
 
Industrial
 
 
 
546

 
—

 
—

 
2,635

 
546

 
2,635

 
3,181

 
1,340

 
1998
 
 5-40 yrs.
494 Gallimore Dairy Road
 
Industrial
 
 
 
749

 
—

 
—

 
2,829

 
749

 
2,829

 
3,578

 
1,049

 
1999
 
 5-40 yrs.
486 Gallimore Dairy Road
 
Industrial
 
 
 
603

 
—

 
—

 
2,613

 
603

 
2,613

 
3,216

 
928

 
1999
 
 5-40 yrs.
488 Gallimore Dairy Road
 
Industrial
 
 
 
499

 
—

 
—

 
2,193

 
499

 
2,193

 
2,692

 
812

 
1999
 
 5-40 yrs.
490 Gallimore Dairy Road
 
Industrial
 
 
 
1,733

 
—

 
—

 
5,909

 
1,733

 
5,909

 
7,642

 
3,431

 
1999
 
 5-40 yrs.
Brigham Road - Land
 
Industrial
 
 
 
7,059

 
—

 
(4,610
)
 
—

 
2,449

 
—

 
2,449

 
—

 
N/A
 
N/A
651 Brigham Road
 
Industrial
 
 
 
453

 
—

 
360

 
2,980

 
813

 
2,980

 
3,793

 
1,130

 
2002
 
 5-40 yrs.
657 Brigham Road
 
Industrial
 
 
 
2,733

 
—

 
881

 
11,247

 
3,614

 
11,247

 
14,861

 
3,012

 
2006
 
 5-40 yrs.
653 Brigham Road
 
Industrial
 
 
 
814

 
—

 
—

 
3,587

 
814

 
3,587

 
4,401

 
723

 
2007
 
 5-40 yrs.
1501 Highwoods Boulevard
 
Office
 
 
 
1,476

 
—

 
—

 
8,034

 
1,476

 
8,034

 
9,510

 
2,758

 
2001
 
 5-40 yrs.
Jefferson Pilot - Land
 
Office
 
 
 
11,759

 
—

 
(4,311
)
 
—

 
7,448

 
—

 
7,448

 
—

 
N/A
 
 N/A
4200 Tudor Lane
 
Industrial
 
 
 
515

 
—

 
383

 
2,288

 
898

 
2,288

 
3,186

 
1,099

 
1996
 
 5-40 yrs.
4224 Tudor Lane
 
Industrial
 
 
 
435

 
—

 
288

 
2,103

 
723

 
2,103

 
2,826

 
852

 
1996
 
 5-40 yrs.
7023 Albert Pick Road
 
Office
 
 
 
834

 
3,459

 
—

 
1,027

 
834

 
4,486

 
5,320

 
2,134

 
1989
 
 5-40 yrs.
370 Knollwood Street
 
Office
 
 
 
1,826

 
7,495

 
—

 
3,702

 
1,826

 
11,197

 
13,023

 
5,068

 
1994
 
 5-40 yrs.
380 Knollwood Street
 
Office
 
 
 
2,989

 
12,029

 
—

 
4,181

 
2,989

 
16,210

 
19,199

 
8,289

 
1990
 
 5-40 yrs.
Church St Medical Center I
 
Office
 
 
 
2,734

 
9,129

 
—

 
255

 
2,734

 
9,384

 
12,118

 
943

 
2003
 
 5-40 yrs.
Church St Medical Center II
 
Office
 
 
 
2,376

 
5,451

 
—

 
42

 
2,376

 
5,493

 
7,869

 
877

 
2007
 
 5-40 yrs.
HIGHWOODS PROPERTIES, INC.
HIGHWOODS REALTY LIMITED PARTNERSHIP
 
SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION (Continued)
 
 
 
 
 
 
Initial Costs
 
Costs Capitalized
Subsequent to
Acquisition
 
Gross Value at Close of Period
 
 
 
 
 
 
Description
 
Property
Type
 
2015
Encumbrance
 
Land
 
Bldg &
Improv
 
Land
 
Bldg &
Improv
 
Land
 
Bldg &
Improv
 
Total
Assets (2)
 
Accumulated
Depreciation
 
Date of
Construction
 
Life on
Which
Depreciation
is
Calculated
Church St Medical Center III
 
Office
 
 
 
925

 
4,551

 
—

 
113

 
925

 
4,664

 
5,589

 
650

 
2008
 
 5-40 yrs.
628 Green Valley Road
 
Office
 
 
 
2,906

 
12,141

 
—

 
914

 
2,906

 
13,055

 
15,961

 
1,153

 
1998
 
 5-40 yrs.
701 Green Valley Road
 
Office
 
 
 
3,787

 
7,719

 
—

 
881

 
3,787

 
8,600

 
12,387

 
1,091

 
1996
 
 5-40 yrs.
Pittsburgh, PA
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One PPG Place
 
Office
 
(1)
 
9,819

 
107,643

 
—

 
36,578

 
9,819

 
144,221

 
154,040

 
20,301

 
1983-1985
 
 5-40 yrs.
Two PPG Place
 
Office
 
(1)
 
2,302

 
10,978

 
—

 
3,949

 
2,302

 
14,927

 
17,229

 
1,623

 
1983-1985
 
 5-40 yrs.
Three PPG Place
 
Office
 
(1)
 
501

 
2,923

 
—

 
3,851

 
501

 
6,774

 
7,275

 
758

 
1983-1985
 
 5-40 yrs.
Four PPG Place
 
Office
 
(1)
 
620

 
3,239

 
—

 
1,445

 
620

 
4,684

 
5,304

 
688

 
1983-1985
 
 5-40 yrs.
Five PPG Place
 
Office
 
(1)
 
803

 
4,924

 
—

 
1,611

 
803

 
6,535

 
7,338

 
1,116

 
1983-1985
 
 5-40 yrs.
Six PPG Place
 
Office
 
(1)
 
3,353

 
25,602

 
—

 
5,824

 
3,353

 
31,426

 
34,779

 
3,603

 
1983-1985
 
 5-40 yrs.
EQT Plaza
 
Office
 
 
 
—

 
83,812

 
—

 
9,423

 
—

 
93,235

 
93,235

 
10,773

 
1987
 
 5-40 yrs.
Raleigh, NC
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
3600 Glenwood Avenue
 
Office
 
 
 
—

 
10,994

 
—

 
4,431

 
—

 
15,425

 
15,425

 
7,388

 
1986
 
 5-40 yrs.
3737 Glenwood Avenue
 
Office
 
 
 
—

 
—

 
318

 
15,665

 
318

 
15,665

 
15,983

 
5,981

 
1999
 
 5-40 yrs.
4800 North Park
 
Office
 
 
 
2,678

 
17,630

 
—

 
7,526

 
2,678

 
25,156

 
27,834

 
14,175

 
1985
 
 5-40 yrs.
4900 North Park
 
Office
 
 
 
770

 
1,983

 
—

 
2,164

 
770

 
4,147

 
4,917

 
1,757

 
1984
 
 5-40 yrs.
5000 North Park
 
Office
 
 
 
1,010

 
4,612

 
(49
)
 
3,033

 
961

 
7,645

 
8,606

 
4,177

 
1980
 
 5-40 yrs.
801 Raleigh Corporate Center
 
Office
 
 
 
828

 
—

 
272

 
10,711

 
1,100

 
10,711

 
11,811

 
3,575

 
2002
 
 5-40 yrs.
Blue Ridge I
 
Office
 
 
 
722

 
4,606

 
—

 
1,435

 
722

 
6,041

 
6,763

 
3,168

 
1982
 
 5-40 yrs.
Blue Ridge II
 
Office
 
 
 
462

 
1,410

 
—

 
783

 
462

 
2,193

 
2,655

 
1,344

 
1988
 
 5-40 yrs.
Cape Fear
 
Office
 
 
 
131

 
1,630

 
(2
)
 
1,123

 
129

 
2,753

 
2,882

 
2,262

 
1979
 
 5-40 yrs.
Catawba
 
Office
 
 
 
125

 
1,635

 
(2
)
 
2,370

 
123

 
4,005

 
4,128

 
3,419

 
1980
 
 5-40 yrs.
CentreGreen One
 
Office
 
 
 
1,529

 
—

 
(391
)
 
10,650

 
1,138

 
10,650

 
11,788

 
4,143

 
2000
 
 5-40 yrs.
CentreGreen Two
 
Office
 
 
 
1,653

 
—

 
(389
)
 
9,652

 
1,264

 
9,652

 
10,916

 
3,095

 
2001
 
 5-40 yrs.
CentreGreen Three - Land
 
Office
 
 
 
1,876

 
—

 
(585
)
 
—

 
1,291

 
—

 
1,291

 
—

 
N/A
 
N/A
CentreGreen Four
 
Office
 
 
 
1,779

 
—

 
(397
)
 
13,510

 
1,382

 
13,510

 
14,892

 
2,952

 
2002
 
 5-40 yrs.
CentreGreen Five
 
Office
 
 
 
1,280

 
—

 
55

 
12,762

 
1,335

 
12,762

 
14,097

 
4,141

 
2008
 
 5-40 yrs.
Cottonwood
 
Office
 
 
 
609

 
3,244

 
—

 
588

 
609

 
3,832

 
4,441

 
2,057

 
1983
 
 5-40 yrs.
Dogwood
 
Office
 
 
 
766

 
2,769

 
—

 
539

 
766

 
3,308

 
4,074

 
1,815

 
1983
 
 5-40 yrs.
GlenLake - Land
 
Office
 
 
 
13,003

 
—

 
(8,359
)
 
114

 
4,644

 
114

 
4,758

 
42

 
N/A
 
5-40 yrs.
GlenLake One
 
Office
 
 
 
924

 
—

 
1,324

 
20,442

 
2,248

 
20,442

 
22,690

 
6,903

 
2002
 
 5-40 yrs.
HIGHWOODS PROPERTIES, INC.
HIGHWOODS REALTY LIMITED PARTNERSHIP
 
SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION (Continued)
 
 
 
 
 
 
Initial Costs
 
Costs Capitalized
Subsequent to
Acquisition
 
Gross Value at Close of Period
 
 
 
 
 
 
Description
 
Property
Type
 
2015
Encumbrance
 
Land
 
Bldg &
Improv
 
Land
 
Bldg &
Improv
 
Land
 
Bldg &
Improv
 
Total
Assets (2)
 
Accumulated
Depreciation
 
Date of
Construction
 
Life on
Which
Depreciation
is
Calculated
GlenLake Four
 
Office
 
 
 
1,659

 
—

 
493

 
21,848

 
2,152

 
21,848

 
24,000

 
6,944

 
2006
 
 5-40 yrs.
GlenLake Six
 
Office
 
 
 
941

 
—

 
(365
)
 
22,329

 
576

 
22,329

 
22,905

 
5,734

 
2008
 
 5-40 yrs.
701 Raleigh Corporate Center
 
Office
 
 
 
1,304

 
—

 
540

 
14,649

 
1,844

 
14,649

 
16,493

 
7,566

 
1996
 
 5-40 yrs.
Highwoods Centre
 
Office
 
 
 
531

 
—

 
(267
)
 
7,587

 
264

 
7,587

 
7,851

 
3,163

 
1998
 
 5-40 yrs.
Highwoods Office Center North - Land
 
Office
 
 
 
357

 
49

 
—

 
—

 
357

 
49

 
406

 
35

 
N/A
 
 5-40 yrs.
Highwoods Tower One
 
Office
 
 
 
203

 
16,744

 
—

 
4,276

 
203

 
21,020

 
21,223

 
11,861

 
1991
 
 5-40 yrs.
Highwoods Tower Two
 
Office
 
 
 
365

 
—

 
503

 
21,564

 
868

 
21,564

 
22,432

 
8,164

 
2001
 
 5-40 yrs.
Inveresk Parcel 2 - Land
 
Office
 
 
 
657

 
—

 
38

 
110

 
695

 
110

 
805

 
1

 
N/A
 
N/A
Lake Boone Medical Center
 
Office
 
 
 
1,450

 
6,311

 
—

 
181

 
1,450

 
6,492

 
7,942

 
1,037

 
1998
 
5-40 yrs.
4620 Creekstone Drive
 
Office
 
 
 
149

 
—

 
107

 
3,085

 
256

 
3,085

 
3,341

 
1,109

 
2001
 
 5-40 yrs.
4825 Creekstone Drive
 
Office
 
 
 
398

 
—

 
293

 
10,080

 
691

 
10,080

 
10,771

 
4,415

 
1999
 
 5-40 yrs.
Pamlico
 
Office
 
 
 
289

 
—

 
—

 
10,428

 
289

 
10,428

 
10,717

 
6,821

 
1980
 
 5-40 yrs.
ParkWest One
 
Office
 
 
 
242

 
—

 
—

 
3,339

 
242

 
3,339

 
3,581

 
1,210

 
2001
 
 5-40 yrs.
ParkWest Two
 
Office
 
 
 
356

 
—

 
—

 
3,285

 
356

 
3,285

 
3,641

 
1,215

 
2001
 
 5-40 yrs.
Progress Center Renovation
 
Office
 
 
 
—

 
—

 
—

 
362

 
—

 
362

 
362

 
297

 
2003
 
 5-40 yrs.
Raleigh Corp Center Lot D
 
Office
 
 
 
1,211

 
—

 
8

 
—

 
1,219

 
—

 
1,219

 
—

 
N/A
 
N/A
PNC Plaza
 
Office
 
43,852
 
1,206

 
—

 
—

 
72,234

 
1,206

 
72,234

 
73,440

 
17,248

 
2008
 
5-40 yrs.
Rexwoods Center I
 
Office
 
 
 
878

 
3,730

 
—

 
1,534

 
878

 
5,264

 
6,142

 
3,187

 
1990
 
5-40 yrs.
Rexwoods Center II
 
Office
 
 
 
362

 
1,818

 
—

 
1,086

 
362

 
2,904

 
3,266

 
1,321

 
1993
 
5-40 yrs.
Rexwoods Center III
 
Office
 
 
 
919

 
2,816

 
—

 
959

 
919

 
3,775

 
4,694

 
2,170

 
1992
 
5-40 yrs.
Rexwoods Center IV
 
Office
 
 
 
586

 
—

 
—

 
4,314

 
586

 
4,314

 
4,900

 
2,016

 
1995
 
5-40 yrs.
Rexwoods Center V
 
Office
 
 
 
1,301

 
—

 
184

 
6,353

 
1,485

 
6,353

 
7,838

 
2,525

 
1998
 
5-40 yrs.
Riverbirch
 
Office
 
 
 
469

 
4,038

 
23

 
5,189

 
492

 
9,227

 
9,719

 
1,455

 
1987
 
5-40 yrs.
Situs I
 
Office
 
 
 
692

 
4,646

 
178

 
(954
)
 
870

 
3,692

 
4,562

 
1,612

 
1996
 
5-40 yrs.
Situs II
 
Office
 
 
 
718

 
6,254

 
181

 
(978
)
 
899

 
5,276

 
6,175

 
2,252

 
1998
 
5-40 yrs.
Situs III
 
Office
 
 
 
440

 
4,078

 
119

 
(1,261
)
 
559

 
2,817

 
3,376

 
1,014

 
2000
 
5-40 yrs.
Six Forks Center I
 
Office
 
 
 
666

 
2,665

 
—

 
1,874

 
666

 
4,539

 
5,205

 
2,271

 
1982
 
5-40 yrs.
Six Forks Center II
 
Office
 
 
 
1,086

 
4,533

 
—

 
2,271

 
1,086

 
6,804

 
7,890

 
3,560

 
1983
 
5-40 yrs.
Six Forks Center III
 
Office
 
 
 
862

 
4,411

 
—

 
2,724

 
862

 
7,135

 
7,997

 
3,836

 
1987
 
5-40 yrs.
Smoketree Tower
 
Office
 
 
 
2,353

 
11,743

 
—

 
6,048

 
2,353

 
17,791

 
20,144

 
8,465

 
1984
 
5-40 yrs.
4601 Creekstone Drive
 
Office
 
 
 
255

 
—

 
217

 
5,476

 
472

 
5,476

 
5,948

 
2,535

 
1997
 
5-40 yrs.
HIGHWOODS PROPERTIES, INC.
HIGHWOODS REALTY LIMITED PARTNERSHIP
 
SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION (Continued)
 
 
 
 
 
 
Initial Costs
 
Costs Capitalized
Subsequent to
Acquisition
 
Gross Value at Close of Period
 
 
 
 
 
 
Description
 
Property
Type
 
2015
Encumbrance
 
Land
 
Bldg &
Improv
 
Land
 
Bldg &
Improv
 
Land
 
Bldg &
Improv
 
Total
Assets (2)
 
Accumulated
Depreciation
 
Date of
Construction
 
Life on
Which
Depreciation
is
Calculated
Weston - Land
 
Other
 
 
 
22,771

 
—

 
(14,992
)
 
—

 
7,779

 
—

 
7,779

 
—

 
N/A
 
N/A
4625 Creekstone Drive
 
Office
 
 
 
458

 
—

 
268

 
5,745

 
726

 
5,745

 
6,471

 
2,670

 
1995
 
5-40 yrs.
11000 Weston Parkway
 
Office
 
 
 
2,651

 
18,850

 
—

 
483

 
2,651

 
19,333

 
21,984

 
2,900

 
1998
 
5-40 yrs.
GlenLake Five
 
Office
 
 
 
—

 
—

 
2,263

 
30,264

 
2,263

 
30,264

 
32,527

 
1,004

 
2014
 
5-40 yrs.
11800 Weston Parkway
 
Office
 
 
 
—

 
—

 
826

 
13,188

 
826

 
13,188

 
14,014

 
299

 
2014
 
5-40 yrs.
CentreGreen Café
 
Office
 
 
 
—

 
—

 
41

 
3,509

 
41

 
3,509

 
3,550

 
96

 
2014
 
5-40 yrs.
CentreGreen Fitness Center
 
Office
 
 
 
—

 
—

 
27

 
2,322

 
27

 
2,322

 
2,349

 
63

 
2014
 
5-40 yrs.
One Bank of America Plaza
 
Office
 
 
 
11,288

 
68,375

 
—

 
10,405

 
11,288

 
78,780

 
90,068

 
3,222

 
1986
 
5-40 yrs.
Weston Lakefront I
 
Office
 
 
 
—

 
—

 
8,522

 
42,267

 
8,522

 
42,267

 
50,789

 
1,209

 
2015
 
5-40 yrs.
Weston Lakefront II
 
Office
 
 
 
—

 
—

 
8,522

 
45,870

 
8,522

 
45,870

 
54,392

 
1,068

 
2015
 
5-40 yrs.
Other Property
 
Other
 
 
 
26,276

 
16,449

 
(24,595
)
 
1,538

 
1,681

 
17,987

 
19,668

 
8,750

 
N/A
 
N/A
Richmond, VA
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
4900 Cox Road
 
Office
 
 
 
1,324

 
5,311

 
15

 
2,916

 
1,339

 
8,227

 
9,566

 
4,142

 
1991
 
 5-40 yrs.
Colonnade Building
 
Office
 
 
 
1,364

 
6,105

 
—

 
1,713

 
1,364

 
7,818

 
9,182

 
2,431

 
2003
 
 5-40 yrs.
Dominion Place - Pitts Parcel - Land
 
Office
 
 
 
1,101

 
—

 
(665
)
 
—

 
436

 
—

 
436

 
—

 
N/A
 
 N/A
Markel 4521
 
Office
 
 
 
1,581

 
13,299

 
168

 
(1,656
)
 
1,749

 
11,643

 
13,392

 
4,575

 
1999
 
 5-40 yrs.
Hamilton Beach/Proctor-Silex
 
Office
 
 
 
1,086

 
4,345

 
10

 
2,306

 
1,096

 
6,651

 
7,747

 
3,897

 
1986
 
 5-40 yrs.
Highwoods Commons
 
Office
 
 
 
521

 
—

 
458

 
3,913

 
979

 
3,913

 
4,892

 
1,561

 
1999
 
 5-40 yrs.
Highwoods One
 
Office
 
 
 
1,688

 
—

 
22

 
11,281

 
1,710

 
11,281

 
12,991

 
5,571

 
1996
 
 5-40 yrs.
Highwoods Two
 
Office
 
 
 
786

 
—

 
226

 
6,133

 
1,012

 
6,133

 
7,145

 
2,947

 
1997
 
 5-40 yrs.
Highwoods Five
 
Office
 
 
 
783

 
—

 
11

 
5,495

 
794

 
5,495

 
6,289

 
2,485

 
1998
 
 5-40 yrs.
Highwoods Plaza
 
Office
 
 
 
909

 
—

 
187

 
5,892

 
1,096

 
5,892

 
6,988

 
2,499

 
2000
 
 5-40 yrs.
Innslake Center
 
Office
 
 
 
845

 
—

 
195

 
6,486

 
1,040

 
6,486

 
7,526

 
2,238

 
2001
 
 5-40 yrs.
Highwoods Centre
 
Office
 
 
 
1,205

 
4,825

 
—

 
1,294

 
1,205

 
6,119

 
7,324

 
2,958

 
1990
 
 5-40 yrs.
Markel 4501
 
Office
 
 
 
1,300

 
13,259

 
213

 
(1,699
)
 
1,513

 
11,560

 
13,073

 
5,360

 
1998
 
 5-40 yrs.
Markel 4600
 
Office
 
 
 
1,700

 
17,081

 
169

 
(49
)
 
1,869

 
17,032

 
18,901

 
7,621

 
1989
 
 5-40 yrs.
North Park
 
Office
 
 
 
2,163

 
8,659

 
6

 
2,464

 
2,169

 
11,123

 
13,292

 
5,205

 
1989
 
 5-40 yrs.
North Shore Commons I
 
Office
 
 
 
951

 
—

 
17

 
12,048

 
968

 
12,048

 
13,016

 
4,155

 
2002
 
 5-40 yrs.
North Shore Commons II
 
Office
 
 
 
2,067

 
—

 
(89
)
 
10,544

 
1,978

 
10,544

 
12,522

 
2,123

 
2007
 
 5-40 yrs.
North Shore Commons C - Land
 
Office
 
 
 
1,497

 
—

 
15

 
—

 
1,512

 
—

 
1,512

 
—

 
N/A
 
 N/A
North Shore Commons D - Land
 
Office
 
 
 
1,261

 
—

 
—

 
—

 
1,261

 
—

 
1,261

 
—

 
N/A
 
N/A
HIGHWOODS PROPERTIES, INC.
HIGHWOODS REALTY LIMITED PARTNERSHIP
 
SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION (Continued)
 
 
 
 
 
 
Initial Costs
 
Costs Capitalized
Subsequent to
Acquisition
 
Gross Value at Close of Period
 
 
 
 
 
 
Description
 
Property
Type
 
2015
Encumbrance
 
Land
 
Bldg &
Improv
 
Land
 
Bldg &
Improv
 
Land
 
Bldg &
Improv
 
Total
Assets (2)
 
Accumulated
Depreciation
 
Date of
Construction
 
Life on
Which
Depreciation
is
Calculated
Nuckols Corner Land
 
Office
 
 
 
1,259

 
—

 
203

 
—

 
1,462

 
—

 
1,462

 
—

 
N/A
 
N/A
One Shockoe Plaza
 
Office
 
 
 
—

 
—

 
356

 
15,778

 
356

 
15,778

 
16,134

 
7,921

 
1996
 
 5-40 yrs.
Pavilion Land
 
Office
 
 
 
181

 
46

 
20

 
(46
)
 
201

 
—

 
201

 
—

 
N/A
 
N/A
Lake Brook Commons
 
Office
 
 
 
1,600

 
8,864

 
21

 
2,189

 
1,621

 
11,053

 
12,674

 
2,883

 
1996
 
 5-40 yrs.
Sadler & Cox Land
 
Office
 
 
 
1,535

 
—

 
343

 
—

 
1,878

 
—

 
1,878

 
—

 
N/A
 
 N/A
4840 Cox Road
 
Office
 
 
 
1,918

 
—

 
358

 
13,559

 
2,276

 
13,559

 
15,835

 
5,704

 
2005
 
 5-40 yrs.
Stony Point F Land
 
Office
 
 
 
1,841

 
—

 
(774
)
 
—

 
1,067

 
—

 
1,067

 
—

 
N/A
 
 N/A
Stony Point I
 
Office
 
 
 
1,384

 
11,630

 
(267
)
 
3,561

 
1,117

 
15,191

 
16,308

 
6,798

 
1990
 
 5-40 yrs.
Stony Point II
 
Office
 
 
 
1,240

 
—

 
103

 
12,084

 
1,343

 
12,084

 
13,427

 
5,094

 
1999
 
 5-40 yrs.
Stony Point III
 
Office
 
 
 
995

 
—

 
—

 
9,936

 
995

 
9,936

 
10,931

 
3,407

 
2002
 
 5-40 yrs.
Stony Point IV
 
Office
 
 
 
955

 
—

 
—

 
11,303

 
955

 
11,303

 
12,258

 
2,864

 
2006
 
 5-40 yrs.
Virginia Mutual
 
Office
 
 
 
1,301

 
6,036

 
15

 
1,162

 
1,316

 
7,198

 
8,514

 
2,658

 
1996
 
 5-40 yrs.
Waterfront Plaza
 
Office
 
 
 
585

 
2,347

 
8

 
1,191

 
593

 
3,538

 
4,131

 
2,103

 
1988
 
 5-40 yrs.
Innsbrook Center
 
Office
 
 
 
914

 
8,249

 
—

 
394

 
914

 
8,643

 
9,557

 
2,661

 
1987
 
 5-40 yrs.
Tampa, FL
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

4200 Cypress
 
Office
 
 
 
2,673

 
16,470

 
—

 
2,672

 
2,673

 
19,142

 
21,815

 
3,225

 
1989
 
5-40 yrs.
Bayshore Place
 
Office
 
 
 
2,276

 
11,817

 
—

 
1,907

 
2,276

 
13,724

 
16,000

 
6,661

 
1990
 
 5-40 yrs.
General Services Administration Building
 
Office
 
 
 
4,054

 
—

 
406

 
27,533

 
4,460

 
27,533

 
31,993

 
9,040

 
2005
 
 5-40 yrs.
Highwoods Preserve Building I
 
Office
 
 
 
991

 
—

 
—

 
22,597

 
991

 
22,597

 
23,588

 
9,238

 
1999
 
 5-40 yrs.
Highwoods Preserve - Land
 
Office
 
 
 
1,485

 
—

 
485

 
—

 
1,970

 
—

 
1,970

 
—

 
N/A
 
N/A
Highwoods Preserve Building V
 
Office
 
 
 
881

 
—

 
—

 
25,361

 
881

 
25,361

 
26,242

 
9,844

 
2001
 
 5-40 yrs.
Highwoods Bay Center I
 
Office
 
 
 
3,565

 
—

 
(64
)
 
36,680

 
3,501

 
36,680

 
40,181

 
8,540

 
2007
 
 5-40 yrs.
HIW Bay Center II - Land
 
Office
 
 
 
3,482

 
—

 
—

 
—

 
3,482

 
—

 
3,482

 
—

 
N/A
 
N/A
Highwoods Preserve Building VII
 
Office
 
 
 
790

 
—

 
—

 
12,498

 
790

 
12,498

 
13,288

 
2,730

 
2007
 
 5-40 yrs.
HIW Preserve VII Garage
 
Office
 
 
 
—

 
—

 
—

 
6,789

 
—

 
6,789

 
6,789

 
1,513

 
2007
 
 5-40 yrs.
Horizon
 
Office
 
 
 
—

 
6,257

 
—

 
3,327

 
—

 
9,584

 
9,584

 
4,583

 
1980
 
 5-40 yrs.
LakePointe One
 
Office
 
 
 
2,106

 
89

 
—

 
44,010

 
2,106

 
44,099

 
46,205

 
17,726

 
1986
 
 5-40 yrs.
LakePointe Two
 
Office
 
 
 
2,000

 
15,848

 
672

 
14,216

 
2,672

 
30,064

 
32,736

 
9,845

 
1999
 
 5-40 yrs.
Lakeside
 
Office
 
 
 
—

 
7,369

 
—

 
4,907

 
—

 
12,276

 
12,276

 
4,169

 
1978
 
 5-40 yrs.
Lakeside/Parkside Garage
 
Office
 
 
 
—

 
—

 
—

 
5,587

 
—

 
5,587

 
5,587

 
1,255

 
2004
 
 5-40 yrs.
One Harbour Place
 
Office
 
 
 
2,016

 
25,252

 
—

 
7,107

 
2,016

 
32,359

 
34,375

 
12,161

 
1985
 
 5-40 yrs.
HIGHWOODS PROPERTIES, INC.
HIGHWOODS REALTY LIMITED PARTNERSHIP
 
SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION (Continued)
 
 
 
 
 
 
Initial Costs
 
Costs Capitalized
Subsequent to
Acquisition
 
Gross Value at Close of Period
 
 
 
 
 
 
Description
 
Property
Type
 
2015
Encumbrance
 
Land
 
Bldg &
Improv
 
Land
 
Bldg &
Improv
 
Land
 
Bldg &
Improv
 
Total
Assets (2)
 
Accumulated
Depreciation
 
Date of
Construction
 
Life on
Which
Depreciation
is
Calculated
Parkside
 
Office
 
 
 
—

 
9,407

 
—

 
3,023

 
—

 
12,430

 
12,430

 
5,740

 
1979
 
 5-40 yrs.
Pavilion
 
Office
 
 
 
—

 
16,394

 
—

 
4,017

 
—

 
20,411

 
20,411

 
8,885

 
1982
 
 5-40 yrs.
Pavilion Parking Garage
 
Office
 
 
 
—

 
—

 
—

 
5,682

 
—

 
5,682

 
5,682

 
2,288

 
1999
 
 5-40 yrs.
Spectrum
 
Office
 
 
 
1,454

 
14,502

 
—

 
6,477

 
1,454

 
20,979

 
22,433

 
9,450

 
1984
 
 5-40 yrs.
Tower Place
 
Office
 
 
 
3,218

 
19,898

 
—

 
4,370

 
3,218

 
24,268

 
27,486

 
11,089

 
1988
 
 5-40 yrs.
Westshore Square
 
Office
 
 
 
1,126

 
5,186

 
—

 
1,658

 
1,126

 
6,844

 
7,970

 
3,161

 
1976
 
 5-40 yrs.
Independence Park - Land
 
Office
 
 
 
4,943

 
—

 
(4,943
)
 
—

 
—

 
—

 
—

 
—

 
N/A
 
N/A
Independence Park I
 
Office
 
 
 
2,531

 
4,526

 
—

 
4,877

 
2,531

 
9,403

 
11,934

 
2,219

 
1983
 
 5-40 yrs.
Meridian I
 
Office
 
 
 
1,849

 
22,363

 
—

 
1,302

 
1,849

 
23,665

 
25,514

 
2,222

 
1984
 
 5-40 yrs.
Meridian II
 
Office
 
 
 
1,302

 
19,588

 
—

 
2,004

 
1,302

 
21,592

 
22,894

 
2,278

 
1986
 
 5-40 yrs.
Suntrust Financial Centre
 
Office
 
 
 
—

 
—

 
1,980

 
102,138

 
1,980

 
102,138

 
104,118

 
1,298

 
1992
 
 5-40 yrs.
Suntrust Financial Land
 
Office
 
 
 
—

 
—

 
2,225

 
17

 
2,225

 
17

 
2,242

 
—

 
N/A
 
 5-40 yrs.
 
 
 
 

 
506,874

 
2,171,535

 
22,845

 
2,214,604

 
529,719

 
4,386,139

 
4,915,858

 
1,138,378

 
 
 
 

2015 Encumbrance Notes
(1)
These assets are pledged as collateral for a $112.2 million first mortgage loan.
(2)
The tax basis of aggregate land and buildings and tenant improvements as of December 31, 2015 is $4.5 billion.
v3.3.1.900
Description of Business and Significant Accounting Policies Description of Business and Significant Accounting Policies (Policies)
 12 Months Ended
Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Basis of Presentation
Basis of Presentation

Our Consolidated Financial Statements are prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”). Our Consolidated Balance Sheets at December 31, 2014 were retrospectively revised from previously reported amounts to reclassify those properties classified as held for sale as of December 31, 2015. Our Consolidated Statements of Income for the years ended December 31, 2014 and 2013 were retrospectively revised from previously reported amounts to reclassify the operations for those properties classified as discontinued operations.

The Company's Consolidated Financial Statements include the Operating Partnership, wholly owned subsidiaries and those entities in which the Company has the controlling interest. The Operating Partnership's Consolidated Financial Statements include wholly owned subsidiaries and those entities in which the Operating Partnership has the controlling interest. We consolidate partnerships, joint ventures and limited liability companies when we control the major operating and financial policies of the entity through majority ownership or in our capacity as general partner or managing member. At December 31, 2015, three of the 50.0% or less owned in-service office properties in a joint venture were consolidated.

In addition, we consolidate those entities deemed to be variable interest entities in which we are determined to be the primary beneficiary. During 2015, we acquired three buildings and a land parcel using special purpose entities owned by qualified intermediaries to facilitate a potential Section 1031 reverse exchange under the Internal Revenue Code. To realize the tax deferral available under the Section 1031 exchange, we must complete the Section 1031 exchange, and take title to the to-be-exchanged buildings within 180 days of the acquisition date. We have determined that these entities are variable interest entities of which we are the primary beneficiary; and therefore, we consolidate these entities. As of December 31, 2015, these variable interest entities had total assets, liabilities and cash flows of $421.3 million, $16.3 million, and $7.1 million, respectively. At December 31, 2014, we had involvement with, but were not the primary beneficiary in, an entity that we concluded to be a variable interest entity. All intercompany transactions and accounts have been eliminated.
Use of Estimates
Use of Estimates

The preparation of consolidated financial statements in accordance with GAAP requires us to make estimates and assumptions that affect the amounts reported in our Consolidated Financial Statements and accompanying notes. Actual results could differ from those estimates.
Real Estate and Related Assets
Real Estate and Related Assets

Real estate and related assets are recorded at cost and stated at cost less accumulated depreciation. Renovations, replacements and other expenditures that improve or extend the life of assets are capitalized and depreciated over their estimated useful lives. Expenditures for ordinary maintenance and repairs are charged to expense as incurred. Depreciation is computed using the straight-line method over the estimated useful life of 40 years for buildings and depreciable land infrastructure costs, 15 years for building improvements and five to seven years for furniture, fixtures and equipment. Tenant improvements are amortized using the straight-line method over initial fixed terms of the respective leases, which generally are from three to 10 years. Depreciation expense for real estate assets was $168.7 million, $154.4 million and $138.2 million for the years ended December 31, 2015, 2014 and 2013, respectively.

Expenditures directly related to the development and construction of real estate assets are included in net real estate assets and are stated at depreciated cost. Development expenditures include pre-construction costs essential to the development of properties, development and construction costs, interest costs on qualifying assets, real estate taxes, development personnel salaries and related costs and other costs incurred during the period of development. Interest and other carrying costs are capitalized until the building is ready for its intended use, but not later than a year from cessation of major construction activity. We consider a construction project as substantially completed and ready for its intended use upon the completion of tenant improvements. We cease capitalization on the portion that is substantially completed and occupied or held available for occupancy, and capitalize only those costs associated with the portion under construction.

1.    Description of Business and Significant Accounting Policies – Continued

Expenditures directly related to the leasing of properties are included in deferred financing and leasing costs and are stated at amortized cost. Such expenditures are part of the investment necessary to execute leases and, therefore, are classified as investment activities in the statement of cash flows. All leasing commissions paid to third parties for new leases or lease renewals are capitalized. Internal leasing costs, which consist primarily of compensation, benefits and other costs, such as legal fees related to leasing activities, that are incurred in connection with successfully obtaining leases of properties are also capitalized. Capitalized leasing costs are amortized on a straight-line basis over the initial fixed terms of the respective leases, which generally are from three to 10 years. Estimated costs related to unsuccessful activities are expensed as incurred.

We record liabilities for the performance of asset retirement activities when the obligation to perform such activities is probable even when uncertainty exists about the timing and/or method of settlement.

Upon the acquisition of real estate assets, we assess the fair value of acquired tangible assets such as land, buildings and tenant improvements, intangible assets and liabilities such as above and below market leases, acquired in-place leases, customer relationships and other identifiable intangible assets and assumed liabilities. We assess fair value based on estimated cash flow projections that utilize discount and/or capitalization rates as well as available market information. The fair value of the tangible assets of an acquired property considers the value of the property as if it were vacant. 

The above and below market rate portions of leases acquired in connection with property acquisitions are recorded in deferred financing and leasing costs and in accounts payable, accrued expenses and other liabilities, respectively, at fair value and amortized into rental revenue over the remaining term of the respective leases as described below. Fair value is calculated as the present value of the difference between (1) the contractual amounts to be paid pursuant to each in-place lease and (2) our estimate of fair market lease rates for each corresponding in-place lease, using a discount rate that reflects the risks associated with the leases acquired and measured over a period equal to the remaining initial term of the lease for above-market leases and the remaining initial term plus the term of any renewal option that the customer would be economically compelled to exercise for below-market leases.

In-place leases acquired are recorded at fair value in deferred financing and leasing costs and are amortized to depreciation and amortization expense over the remaining term of the respective lease. The value of in-place leases is based on our evaluation of the specific characteristics of each customer's lease. Factors considered include estimates of carrying costs during hypothetical expected lease-up periods, current market conditions, the customer's credit quality and costs to execute similar leases. In estimating carrying costs, we include real estate taxes, insurance and other operating expenses and estimates of lost rentals at market rates during the expected lease-up periods, depending on local market conditions. In estimating costs to execute similar leases, we consider tenant improvements, leasing commissions and legal and other related expenses.
 
Real estate and other assets are classified as long-lived assets held for use or as long-lived assets held for sale. Real estate is classified as held for sale when the sale of the asset is probable, has been duly approved by the Company, a legally enforceable contract has been executed and the buyer's due diligence period, if any, has expired.
Impairments of Real Estate Assets and Investments in Unconsolidated Affiliates
Impairments of Real Estate Assets and Investments in Unconsolidated Affiliates

With respect to assets classified as held for use, we perform an impairment analysis if events or changes in circumstances indicate that the carrying value may be impaired, such as a significant decline in occupancy, identification of materially adverse legal or environmental factors, change in our designation of an asset from core to non-core, which may impact the anticipated holding period, or a decline in market value to an amount less than cost. This analysis is generally performed at the property level, except when an asset is part of an interdependent group such as an office park, and consists of determining whether the asset's carrying amount will be recovered from its undiscounted estimated future operating and residual cash flows. These cash flows are estimated based on a number of assumptions that are subject to economic and market uncertainties including, among others, demand for space, competition for customers, changes in market rental rates, costs to operate each property and expected ownership periods. For properties under development, the cash flows are based on expected service potential of the asset or asset group when development is substantially complete.
 

1.    Description of Business and Significant Accounting Policies – Continued

If the carrying amount of a held for use asset exceeds the sum of its undiscounted future operating and residual cash flows, an impairment loss is recorded for the difference between estimated fair value of the asset and the carrying amount. We generally estimate the fair value of assets held for use by using discounted cash flow analyses. In some instances, appraisal information may be available and is used in addition to a discounted cash flow analysis. As the factors used in generating these cash flows are difficult to predict and are subject to future events that may alter our assumptions, the discounted and/or undiscounted future operating and residual cash flows estimated by us in our impairment analyses or those established by appraisal may not be achieved and we may be required to recognize future impairment losses on properties held for use.
 
We record assets held for sale at the lower of the carrying amount or estimated fair value. Fair value of assets held for sale is equal to the estimated or contracted sales price with a potential buyer, less costs to sell. The impairment loss is the amount by which the carrying amount exceeds the estimated fair value.
 
We also analyze our investments in unconsolidated affiliates for impairment. This analysis consists of determining whether an expected loss in market value of an investment is other than temporary by evaluating the length of time and the extent to which the market value has been less than cost, the financial condition and near-term prospects of the unconsolidated affiliate, and our intent and ability to retain our investment for a period of time sufficient to allow for any anticipated recovery in market value. As the factors used in this analysis are difficult to predict and are subject to future events that may alter our assumptions, we may be required to recognize future impairment losses on our investments in unconsolidated affiliates.
Sales of Real Estate
Sales of Real Estate
 
For sales transactions meeting the requirements for full profit recognition, the related assets and liabilities are removed from the balance sheet and the resultant gain or loss is recorded in the period the transaction closes. For sales transactions with continuing involvement after the sale, if the continuing involvement with the property is limited by the terms of the sales contract, profit is recognized at the time of sale and is reduced by the maximum exposure to loss related to the nature of the continuing involvement. Sales to entities in which we have or receive an interest are accounted for using partial sale accounting.
 
For transactions that do not meet the criteria for a sale, we evaluate the nature of the continuing involvement, including put and call provisions, if present, and account for the transaction as a financing arrangement, profit-sharing arrangement, leasing arrangement or other alternate method of accounting, rather than as a sale, based on the nature and extent of the continuing involvement. Some transactions may have numerous forms of continuing involvement. In those cases, we determine which method is most appropriate based on the substance of the transaction.
Rental and Other Revenues
Rental and Other Revenues
 
Minimum contractual rents from leases are recognized on a straight-line basis over the terms of the respective leases. This means that, with respect to a particular lease, actual amounts billed in accordance with the lease during any given period may be higher or lower than the amount of rental revenue recognized for the period. Straight-line rental revenue is commenced when the customer assumes control of the leased premises. Accrued straight-line rents receivable represents the amount by which straight-line rental revenue exceeds rents currently billed in accordance with lease agreements. Contingent rental revenue, such as percentage rent, is accrued when the contingency is removed. Termination fee income is recognized at the later of when the customer has vacated the space or the lease has expired and a fully executed lease termination agreement has been delivered, the amount of the fee is determinable and collectability of the fee is reasonably assured. Rental revenue reductions related to co-tenancy lease provisions, if any, are accrued when events have occurred that trigger such provisions.

1.    Description of Business and Significant Accounting Policies – Continued

Cost recovery income is determined on a calendar year and a lease-by-lease basis. The most common types of cost recovery income in our leases are common area maintenance (“CAM”) and real estate taxes, for which a customer typically pays its pro-rata share of operating and administrative expenses and real estate taxes in excess of the costs incurred during a contractually specified base year. The computation of cost recovery income is complex and involves numerous judgments, including the interpretation of lease provisions. Leases are not uniform in dealing with such cost recovery income and there are many variations in the computation. Many customers make monthly fixed payments of CAM, real estate taxes and other cost reimbursement items. We accrue income related to these payments each month. We make quarterly accrual adjustments, positive or negative, to cost recovery income to adjust the recorded amounts to our best estimate of the final annual amounts to be billed and collected. After the end of the calendar year, we compute each customer's final cost recovery income and, after considering amounts paid by the customer during the year, issue a bill or credit for the appropriate amount to the customer. The differences between the amounts billed less previously received payments and the accrual adjustment are recorded as increases or decreases to cost recovery income when the final bills are prepared, which occurs during the first half of the subsequent year.
Allowance for Doubtful Accounts
Allowance for Doubtful Accounts
 
Accounts receivable, accrued straight-line rents receivable and mortgages and notes receivable are reduced by an allowance for amounts that may become uncollectible in the future. We regularly evaluate the adequacy of our allowance for doubtful accounts. The evaluation primarily consists of reviewing past due account balances and considering such factors as the credit quality of our customer, historical trends of the customer and changes in customer payment terms. Additionally, with respect to customers in bankruptcy, we estimate the probable recovery through bankruptcy claims and adjust the allowance for amounts deemed uncollectible. If our assumptions regarding the collectability of receivables prove incorrect, we could experience losses in excess of our allowance for doubtful accounts. The allowance and its related receivable are written-off when we have concluded there is a low probability of collection and we have discontinued collection efforts.
Discontinued Operations
Discontinued Operations
 
Subsequent to the early adoption of the Financial Accounting Standards Board ("FASB") accounting standards update on the presentation of discontinued operations beginning in April 2014, properties that are sold or classified as held for sale are classified as discontinued operations provided that the disposal represents a strategic shift that has (or will have) a major effect on our operations and financial results. Interest expense is included in discontinued operations if a related loan securing the sold property is to be paid off or assumed by the buyer in connection with the sale. If the property is sold to a joint venture in which we retain an interest, the property will not be accounted for as a discontinued operation due to our significant ongoing interest in the operations through our joint venture interest. If we are retained to provide property management, leasing and/or other services for the property owner after the sale, the property generally will be accounted for as a discontinued operation because the expected cash flows related to our management and leasing activities generally will not be significant in comparison to the cash flows from the property prior to sale.
Lease Incentives
Lease Incentives
 
Lease incentive costs, which are payments made to or on behalf of a customer as an incentive to sign a lease, are capitalized in deferred financing and leasing costs and amortized on a straight-line basis over the respective lease terms as a reduction of rental revenues.
Investments in Unconsolidated Affiliates
Investments in Unconsolidated Affiliates
 
We account for our investments in less than majority owned joint ventures, partnerships and limited liability companies using the equity method of accounting when our interests represent a general partnership interest but substantive participating rights or substantive kick out rights have been granted to the limited partners or when our interests do not represent a general partnership interest and we do not control the major operating and financial policies of the entity. These investments are initially recorded at cost in investments in unconsolidated affiliates and are subsequently adjusted for our share of earnings and cash contributions and distributions. To the extent our cost basis at formation of the joint venture is different than the basis reflected at the joint venture level, the basis difference is amortized over the life of the related assets and included in our share of equity in earnings of unconsolidated affiliates.
Cash and Cash Equivalent
Cash Equivalents
 
We consider highly liquid investments with an original maturity of three months or less when purchased to be cash equivalents.
Restricted Cash
Restricted Cash
 
Restricted cash represents cash deposits that are legally restricted or held by third parties on our behalf, such as construction-related escrows, property disposition proceeds set aside and designated or intended to fund future tax-deferred exchanges of qualifying real estate investments, escrows and reserves for debt service, real estate taxes and property insurance established pursuant to certain mortgage financing arrangements and any deposits made with lenders to unencumber secured properties.
Redeemable Common Units and Preferred Units
Redeemable Common Units and Preferred Units
 
Limited partners holding Common Units other than the Company (“Redeemable Common Units”) have the right to put any and all of the Common Units to the Operating Partnership and the Company has the right to put any and all of the Preferred Units to the Operating Partnership in exchange for their liquidation preference plus accrued and unpaid distributions in the event of a corresponding redemption by the Company of the underlying Preferred Stock. Consequently, these Redeemable Common Units and Preferred Units are classified outside of permanent partners’ capital in the Operating Partnership's accompanying balance sheets. The recorded value of the Redeemable Common Units is based on fair value at the balance sheet date as measured by the closing price of Common Stock on that date multiplied by the total number of Redeemable Common Units outstanding. The recorded value of the Preferred Units is based on their redemption value.
Income Tax
Income Taxes
 
The Company has elected and expects to continue to qualify as a REIT under Sections 856 through 860 of the Internal Revenue Code of 1986, as amended (the “Code”). A corporate REIT is a legal entity that holds real estate assets and, through the payment of dividends to stockholders, is generally permitted to reduce or avoid the payment of federal and state income taxes at the corporate level. To maintain qualification as a REIT, the Company is required to pay dividends to its stockholders equal to at least 90.0% of its annual REIT taxable income, excluding net capital gains. The partnership agreement requires the Operating Partnership to pay economically equivalent distributions on outstanding Common Units at the same time that the Company pays dividends on its outstanding Common Stock.

Other than income taxes related to its taxable REIT subsidiary, the Operating Partnership does not reflect any federal income taxes in its financial statements, since as a partnership the taxable effects of its operations are attributed to its partners. The Operating Partnership does record state income tax for states that tax partnership income directly.
 
We conduct certain business activities through a taxable REIT subsidiary, as permitted under the Code. The taxable REIT subsidiary is subject to federal, state and local income taxes on its taxable income. We record provisions for income taxes based on its income recognized for financial statement purposes, including the effects of temporary differences between such income and the amount recognized for tax purposes.
Concentration of Credit Risk
Concentration of Credit Risk
 
At December 31, 2015, properties that we wholly own were leased to 1,910 customers. The geographic locations that comprise greater than 10.0% of our rental and other revenues are Raleigh, NC, Atlanta, GA, Tampa, FL and Nashville, TN. Our customers engage in a wide variety of businesses. No single customer of the properties that we wholly own generated more than 6.0% of our consolidated revenues during 2015.
 
We maintain our cash and cash equivalents and our restricted cash at financial or other intermediary institutions. The combined account balances at each institution may exceed FDIC insurance coverage and, as a result, there is a concentration of credit risk related to amounts on deposit in excess of FDIC insurance coverage. Additionally, from time to time in connection with tax-deferred 1031 transactions, our restricted cash balances may be commingled with other funds being held by any such intermediary institution, which would subject our balance to the credit risk of the institution.
Derivative Financial Instruments
Derivative Financial Instruments
 
We borrow funds at a combination of fixed and variable rates. Borrowings under our revolving credit facility, bridge facility and bank term loans bear interest at variable rates. Our long-term debt typically bears interest at fixed rates. Our interest rate risk management objectives are to limit generally the impact of interest rate changes on earnings and cash flows and to lower our overall borrowing costs. To achieve these objectives, from time to time, we enter into interest rate hedge contracts such as collars, swaps, caps and treasury lock agreements in order to mitigate our interest rate risk with respect to various debt instruments. We generally do not hold or issue these derivative contracts for trading or speculative purposes. The interest rate on all of our variable rate debt is generally adjusted at one or three month intervals, subject to settlements under these interest rate hedge contracts.

Interest rate swaps involve the receipt of variable-rate amounts from a counterparty in exchange for making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in accumulated other comprehensive loss ("AOCL") and is subsequently reclassified into interest expense in the period that the hedged forecasted transaction affects earnings.
 
We account for terminated derivative instruments by recognizing the related accumulated comprehensive income/loss balance in current earnings, unless the hedged forecasted transaction continues as originally planned, in which case we continue to amortize the accumulated comprehensive income/loss into earnings over the originally designated hedge period.
Earnings Per Share
Earnings Per Share and Per Unit
 
Basic earnings per share of the Company is computed by dividing net income available for common stockholders by the weighted Common Shares outstanding - basic. Diluted earnings per share is computed by dividing net income available to common stockholders plus noncontrolling interests in the Operating Partnership by the weighted Common Shares outstanding - basic plus the dilutive effect of options, warrants and convertible securities outstanding, including Common Units, using the treasury stock method. Weighted Common Shares outstanding - basic includes all unvested restricted stock where dividends received on such restricted stock are non-forfeitable.
 
Basic earnings per unit of the Operating Partnership is computed by dividing net income available for common unitholders by the weighted Common Units outstanding - basic. Diluted earnings per unit is computed by dividing net income available to common unitholders by the weighted Common Units outstanding - basic plus the dilutive effect of options and warrants, using the treasury stock method. Weighted Common Units outstanding - basic includes all of the Company's unvested restricted stock where dividends received on such restricted stock are non-forfeitable.
Recently Issued Accounting Standards
Recently Issued Accounting Standards
 
The FASB recently issued an accounting standards update that requires the use of a new five-step model to recognize revenue from customer contracts. The five-step model requires that we identify the contract with the customer, identify the performance obligations in the contract, determine the transaction price, allocate the transaction price to the performance obligations in the contract and recognize revenue when we satisfy the performance obligations. We will also be required to disclose information regarding the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. The accounting standards update is required to be adopted in 2018. Retrospective application is required either to all periods presented or with the cumulative effect of initial adoption recognized in the period of adoption. We are in the process of evaluating this accounting standards update.
 
The FASB recently issued an accounting standards update that amends consolidation requirements. The amendments significantly change the consolidation analysis required under GAAP and will require companies to reevaluate all previous consolidation conclusions. The accounting standards update is required to be adopted in 2016. We are in the process of evaluating this accounting standards update.
 
The FASB recently issued an accounting standards update that requires debt issuance costs related to a recognized debt liability to be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The accounting standards update is required to be adopted in 2016. Retrospective application is required. We do not expect such adoption to have a material effect on the balance sheet.
v3.3.1.900
Real Estate Assets Real Estate Assets (Tables)
 12 Months Ended
Dec. 31, 2015
2015 Acquisitions [Member]  
Significant Acquisitions and Disposals [Line Items]  
Schedule of Purchase Price Allocation
The following table sets forth a summary of the fair value of the major assets acquired and liabilities assumed relating to the above-referenced acquisition of two buildings in Atlanta, GA during 2015:

 
Total
Purchase Price Allocation
Real estate assets
$
275,639

Acquisition-related intangible assets (in deferred financing and leasing costs)
23,722

Acquisition-related below market lease liabilities (in accounts payable, accrued expenses and other liabilities)
(9,076
)
Total allocation
$
290,285
Business Acquisition, Pro Forma Information
The following table sets forth the Company's revenues and net income, adjusted for interest expense, straight-line rental income, depreciation and amortization related to purchase price allocations and acquisition costs, assuming the above-referenced acquisition of two buildings in Atlanta, GA during 2015 had been completed as of January 1, 2014:
 
 
Year Ended December 31,
 
2015
 
2014
 
(unaudited)
Pro forma revenues
$
626,067

 
$
584,650

Pro forma net income
$
103,485

 
$
113,284

Pro forma net income available for common stockholders
$
96,797

 
$
105,769

Pro forma earnings per share - basic
$
1.03

 
$
1.17

Pro forma earnings per share - diluted
$
1.02

 
$
1.17
2013 Acquisitions [Member]  
Significant Acquisitions and Disposals [Line Items]  
Schedule of Purchase Price Allocation
The following table sets forth a summary of the fair value of the major assets acquired and liabilities assumed relating to the above-referenced acquisitions of a building in Orlando, FL and Nashville, TN and the 553,000 rentable square foot building in Atlanta, GA during 2013:
 
 
Total
Purchase Price Allocation
Real estate assets
$
445,396

Acquisition-related intangible assets (in deferred financing and leasing costs)
50,595

Mortgages and notes payable
(127,891
)
Acquisition-related below market lease liabilities (in accounts payable, accrued expenses and other liabilities)
(17,818
)
Total allocation
$
350,282
Business Acquisition, Pro Forma Information
The following table sets forth the Company's revenues and net income, adjusted for interest expense, straight-line rental income, depreciation and amortization related to purchase price allocations, acquisition costs and equity in earnings of unconsolidated affiliates previously recognized as income assuming the above-referenced acquisitions of buildings in Orlando, FL, Nashville, TN and Atlanta, GA during 2013 had been completed as of January 1, 2012:
 
 
Year Ended December 31,
 
2013
 
(unaudited)
Pro forma revenues
$
538,890

Pro forma net income
$
121,754

Pro forma net income available for common stockholders
$
113,606

Pro forma earnings per share - basic
$
1.33

Pro forma earnings per share - diluted
$
1.33
v3.3.1.900
Investments In and Advances To Affiliates (Tables)
 12 Months Ended
Dec. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]  
Schedule of Equity Method Investments
The following table sets forth our ownership in unconsolidated affiliates at December 31, 2015:

Joint Venture
 
Location of Properties
 
Ownership
Interest
Concourse Center Associates, LLC
 
Greensboro, NC
 
50.0%
Plaza Colonnade, LLC
 
Kansas City, MO
 
50.0%
Highwoods DLF 97/26 DLF 99/32, LP
 
Orlando, FL
 
42.9%
Kessinger/Hunter & Company, LC
 
Kansas City, MO
 
26.5%
Highwoods DLF Forum, LLC
 
Raleigh, NC
 
25.0%
Highwoods DLF 98/29, LLC
 
Orlando, FL
 
22.8%
4600 Madison Associates, LP
 
Kansas City, MO
 
12.5%
Schedule of Equity Method Investments Summarized Balance Sheet Information
The following table sets forth the summarized balance sheets of our unconsolidated affiliates:

 
December 31,
 
2015
 
2014
 
 
 
(as revised)
Balance Sheets:
 
 
 
Assets:
 
 
 
Real estate assets, net
$
163,852

 
$
239,142

All other assets, net
53,511

 
61,290

Total Assets
$
217,363

 
$
300,432

Liabilities and Partners’ or Shareholders’ Equity:
 
 
 
Mortgages and notes payable (1)
$
141,580

 
$
191,587

All other liabilities
6,547

 
11,967

Partners’ or shareholders’ equity
69,236

 
96,878

Total Liabilities and Partners’ or Shareholders’ Equity
$
217,363

 
$
300,432

Our share of historical partners’ or shareholders’ equity
$
21,022

 
$
30,784

Advances to unconsolidated affiliates
448

 
20,864

Difference between cost of investments and the net book value of underlying net assets
(794
)
 
(963
)
Carrying value of investments in and advances to unconsolidated affiliates
$
20,676

 
$
50,685

Our share of unconsolidated non-recourse mortgage debt (1)
$
49,242

 
$
60,972

__________
(1)
Our share of scheduled future principal payments, including amortization, due on mortgages and notes payable at December 31, 2015 is as follows:
2016
$
4,407

2017
20,817

2018
19,580

2019
563

2020
562

Thereafter
3,313

 
$
49,242


 
All of this joint venture debt is non-recourse to us except in the case of customary exceptions pertaining to such matters as misuse of funds, environmental conditions, material misrepresentations and voluntary or uncontested involuntary bankruptcy events.
Schedule of Entitys Share Of Equity Method Investments Future Debt Maturities
Our share of scheduled future principal payments, including amortization, due on mortgages and notes payable at December 31, 2015 is as follows:
2016
$
4,407

2017
20,817

2018
19,580

2019
563

2020
562

Thereafter
3,313

 
$
49,242
Schedule of Equity Method Investments Summarized Income Statement Information
The following table sets forth the summarized income statements of our unconsolidated affiliates:
 
Year Ended December 31,
 
2015
 
2014
 
2013
Income Statements:
 
 
 
 
 
Rental and other revenues
$
48,118

 
$
50,514

 
$
82,168

Expenses:
 
 
 
 
 
Rental property and other expenses
22,721

 
25,159

 
41,284

Depreciation and amortization
12,257

 
13,310

 
20,928

Impairments of real estate assets
—

 
—

 
20,077

Interest expense
7,196

 
8,847

 
14,994

Total expenses
42,174

 
47,316

 
97,283

Income/(loss) before disposition of property
5,944

 
3,198

 
(15,115
)
Gains on disposition of property
18,181

 
2,998

 
20,501

Net income
$
24,125

 
$
6,196

 
$
5,386
v3.3.1.900
Intangible Assets and Below Market Lease Liabilities (Tables)
 12 Months Ended
Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Total Intangible Assets and Below Market Lease Liabilities
The following table sets forth total intangible assets and acquisition-related below market lease liabilities, net of accumulated amortization:

 
December 31,
 
2015
 
2014
Assets:
 
 
 
Deferred financing costs
$
18,449

 
$
19,478

Less accumulated amortization
(8,551
)
 
(7,953
)
 
9,898

 
11,525

Deferred leasing costs (including lease incentives and above market lease and in-place lease acquisition-related intangible assets)
346,937

 
311,092

Less accumulated amortization
(115,172
)
 
(100,169
)
 
231,765

 
210,923

Deferred financing and leasing costs, net
$
241,663

 
$
222,448

 
 
 
 
Liabilities (in accounts payable, accrued expenses and other liabilities):
 
 
 
Acquisition-related below market lease liabilities
$
63,830

 
$
55,783

Less accumulated amortization
(17,927
)
 
(13,548
)
 
$
45,903

 
$
42,235
Amortization of Intangible Assets and Below Market Lease Liabilities
The following table sets forth amortization of intangible assets and below market lease liabilities:

 
Year Ended December 31,
 
2015
 
2014
 
2013
Amortization of deferred financing costs
$
3,645

 
$
3,082

 
$
3,802

Amortization of deferred leasing costs and acquisition-related intangible assets (in depreciation and amortization)
$
43,332

 
$
38,144

 
$
35,941

Amortization of lease incentives (in rental and other revenues)
$
1,493

 
$
1,419

 
$
1,361

Amortization of acquisition-related intangible assets (in rental and other revenues)
$
5,062

 
$
4,549

 
$
3,676

Amortization of acquisition-related intangible assets (in rental property and other expenses)
$
557

 
$
557

 
$
556

Amortization of acquisition-related below market lease liabilities (in rental and other revenues)
$
(7,065
)
 
$
(6,129
)
 
$
(5,316
)
Scheduled Future Amortization of Intangible Assets and Below Market Lease Liabilities
The following table sets forth scheduled future amortization of intangible assets and below market lease liabilities:

Years Ending December 31,
 
Amortization
of Deferred Financing
Costs
 
Amortization
of Deferred Leasing Costs and Acquisition-Related Intangible Assets (in Depreciation and Amortization)
 
Amortization
of Lease Incentives (in Rental and Other Revenues)
 
Amortization
of Acquisition-Related Intangible Assets (in Rental and Other Revenues)
 
Amortization of Acquisition-Related Intangible Assets (in Rental Property and Other Expenses)
 
Amortization
of Acquisition-Related Below Market Lease Liabilities (in Rental and Other Revenues)
2016
 
$
3,185

 
$
45,903

 
$
1,254

 
$
3,808

 
$
553

 
$
(6,969
)
2017
 
2,693

 
38,580

 
1,175

 
2,671

 
553

 
(6,626
)
2018
 
1,530

 
31,827

 
1,076

 
1,709

 
553

 
(6,231
)
2019
 
1,116

 
26,161

 
880

 
1,306

 
553

 
(5,739
)
2020
 
804

 
21,584

 
652

 
989

 
525

 
(5,410
)
Thereafter
 
570

 
45,008

 
1,883

 
2,562

 
—

 
(14,928
)
 
 
$
9,898

 
$
209,063

 
$
6,920

 
$
13,045

 
$
2,737

 
$
(45,903
)
Weighted average remaining amortization periods as of December 31, 2015 (in years)
 
3.9

 
6.6

 
7.4

 
6.1

 
5.0

 
7.9
Total Intangible Assets and Below Market Lease Liabilities from Acquisition Activity
The following table sets forth the intangible assets acquired and below market lease liabilities assumed as a result of 2015 acquisition activity:

 
 
Acquisition-Related Intangible Assets (amortized in Rental and Other Revenues)
 
Acquisition-Related Intangible Assets (amortized in Depreciation and Amortization)
 
Acquisition-Related Below Market Lease Liabilities (amortized in Rental and Other Revenues)
Amount recorded at acquisition
 
$
3,051

 
$
35,534

 
$
(10,733
)
Weighted average remaining amortization periods as of December 31, 2015 (in years)
 
5.0

 
5.7

 
9.6
v3.3.1.900
Mortgages and Notes Payable (Tables)
 12 Months Ended
Dec. 31, 2015
Debt Disclosure [Abstract]  
Schedule of Consolidated Mortgages and Notes Payable
Our mortgages and notes payable consist of the following:
 
 
December 31,
 
2015
 
2014
Secured indebtedness: (1)
 
 
 
5.17% (6.43% effective rate) mortgage loan due 2015 (2)
$
—

 
$
39,324

6.88% mortgage loans due 2016 (3)
—

 
107,556

7.50% mortgage loan due 2016
43,852

 
44,501

5.10% (4.22% effective rate) mortgage loan due 2017 (4)
112,230

 
115,229

6.11% (5.36% effective rate) mortgage loan due 2017 (5)
19,199

 
—

8.15% (7.65% effective rate) mortgage loan due 2016 (6)
—

 
6,258

 
175,281

 
312,868

Unsecured indebtedness:
 
 
 
5.85% (5.88% effective rate) notes due 2017 (7)
379,544

 
379,427

7.50% notes due 2018
200,000

 
200,000

3.20% (3.363% effective rate) notes due 2021 (8)
297,639

 
297,207

3.625% (3.752% effective rate) notes due 2023 (9)
248,150

 
247,887

Variable rate term loan due 2019 (10)
200,000

 
200,000

Variable rate term loan due 2020 (11)
350,000

 
225,000

Bridge credit facility due 2016 (12)
350,000

 
—

Revolving credit facility due 2018 (13)
299,000

 
209,000

 
2,324,333

 
1,758,521

Total
$
2,499,614

 
$
2,071,389

__________
(1)
Our secured mortgage loans were collateralized by real estate assets with an aggregate undepreciated book value of $314.2 million at December 31, 2015. Our fixed rate mortgage loans generally are either locked out to prepayment for all or a portion of their term or are prepayable subject to certain conditions including prepayment penalties.
(2)
Net of unamortized fair market value discount of $0.4 million as of December 31, 2014. This debt was repaid in 2015.
(3)
This debt was repaid in 2015.
(4)
Net of unamortized fair market value premium of $1.7 million and $2.7 million as of December 31, 2015 and 2014, respectively.
(5)
Net of unamortized fair market value premium of $0.2 million as of December 31, 2015.
(6)
Net of unamortized fair market value premium of $0.1 million as of December 31, 2014. This debt was repaid in 2015.
(7)
Net of unamortized original issuance discount of $0.1 million and $0.3 million as of December 31, 2015 and 2014, respectively.
(8)
Net of unamortized original issuance discount of $2.4 million and $2.8 million as of December 31, 2015 and 2014, respectively.
(9)
Net of unamortized original issuance discount of $1.9 million and $2.1 million as of December 31, 2015 and 2014, respectively.
(10)
The interest rate is 1.44% at December 31, 2015.
(11)
As more fully described in Note 7, we entered into floating-to-fixed interest rate swaps that effectively fix LIBOR for the original $225.0 million portion of this loan. Accordingly, the equivalent fixed rate of this amount is 2.78%. The interest rate on the remaining $125.0 million is 1.41% at December 31, 2015.
(12)
The interest rate is 1.49% at December 31, 2015.
(13)
The interest rate is 1.45% at December 31, 2015.
Schedule of Long-term Debt Instruments
The following table sets forth scheduled future principal payments, including amortization, due on our mortgages and notes payable at December 31, 2015:

Years Ending December 31,
 
Principal Amount
2016
 
$
396,090

2017
 
507,345

2018
 
498,305

2019
 
199,305

2020
 
349,305

Thereafter
 
549,264

 
 
$
2,499,614
v3.3.1.900
Derivative Financial Instruments (Tables)
 12 Months Ended
Dec. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule of Derivative Instruments, Fair Value
The following table sets forth the fair value of our derivatives:

 
December 31,
 
2015
 
2014
Derivatives:
 
 
 
Derivatives designated as cash flow hedges in accounts payable, accrued expenses and other liabilities:
 
 
 
Interest rate swaps
$
3,073

 
$
2,412
Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance

The following table sets forth the effect of our cash flow hedges on AOCL and interest expense:

 
Year Ended December 31,
 
2015
 
2014
 
2013
Derivatives Designated as Cash Flow Hedges:
 
 
 
 
 
Amount of unrealized gains/(losses) recognized in AOCL on derivatives (effective portion):
 
 
 
 
 
Interest rate swaps
$
(4,040
)
 
$
(5,662
)
 
$
5,778

Amount of losses reclassified out of AOCL into contractual interest expense (effective portion):
 
 
 
 
 
Interest rate swaps
$
3,696

 
$
3,777

 
$
3,370
v3.3.1.900
Commitments and Contingencies (Tables)
 12 Months Ended
Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]  
Scheduled Future Obligations, Operating Ground Leases
The following table sets forth our scheduled obligations for future minimum payments on operating ground leases at December 31, 2015:

Years Ending December 31,
 
Minimum Payments
2016
 
$
3,033

2017
 
3,067

2018
 
3,103

2019
 
3,140

2020
 
3,179

Thereafter
 
109,157

 
 
$
124,679
v3.3.1.900
Noncontrolling Interests (Tables) - Highwoods Properties, Inc. [Member]
 12 Months Ended
Dec. 31, 2015
Noncontrolling Interest [Line Items]  
Noncontrolling Interests in the Operating Partnership
The following table sets forth the Company's noncontrolling interests in the Operating Partnership:

 
Year Ended December 31,
 
2015
 
2014
Beginning noncontrolling interests in the Operating Partnership
$
130,048

 
$
106,480

Adjustment of noncontrolling interests in the Operating Partnership to fair value
67

 
25,275

Conversions of Common Units to Common Stock
(1,645
)
 
(162
)
Redemptions of Common Units
—

 
(93
)
Net income attributable to noncontrolling interests in the Operating Partnership
2,918

 
3,542

Distributions to noncontrolling interests in the Operating Partnership
(4,959
)
 
(4,994
)
Total noncontrolling interests in the Operating Partnership
$
126,429

 
$
130,048
Net Income Available for Common Stockholders and Transfers From Noncontrolling Interests in the Operating Partnership
The following table sets forth net income available for common stockholders and transfers from the Company's noncontrolling interests in the Operating Partnership:

 
Year Ended December 31,
 
2015
 
2014
 
2013
Net income available for common stockholders
$
94,572

 
$
108,457

 
$
122,949

Increase in additional paid in capital from conversions of Common Units to Common Stock
1,645

 
162

 
28,788

Change from net income available for common stockholders and transfers from noncontrolling interests
$
96,217

 
$
108,619

 
$
151,737
v3.3.1.900
Disclosure About Fair Value of Financial Instruments (Tables)
 12 Months Ended
Dec. 31, 2015
Fair Value Disclosures [Abstract]  
Fair Value Measurements of Assets, Liabilities and Noncontrolling Interests
The following table sets forth our assets and liabilities and the Company's noncontrolling interests in the Operating Partnership that are measured at fair value within the fair value hierarchy.
 
 
 
 
Level 1
 
Level 2
 
Level 3
 
Total
 
Quoted Prices
in Active
Markets for Identical Assets or Liabilities
 
Significant Observable Inputs
 
Significant Unobservable Inputs
Fair Value at December 31, 2015:
 
 
 
 
 
 
 
Assets:
 
 
 
 
 
 
 
Mortgages and notes receivable, at fair value (1)
$
2,096

 
$
—

 
$
2,096

 
$
—

Marketable securities of non-qualified deferred compensation plan (in prepaid expenses and other assets)
2,736

 
2,736

 
—

 
—

Tax increment financing bond (in real estate and other assets, net, held for sale)
11,197

 
—

 
—

 
11,197

Total Assets
$
16,029

 
$
2,736

 
$
2,096

 
$
11,197

Noncontrolling Interests in the Operating Partnership
$
126,429

 
$
126,429

 
$
—

 
$
—

Liabilities:
 
 
 
 
 
 
 
Mortgages and notes payable, at fair value (1)
$
2,525,390

 
$
—

 
$
2,525,390

 
$
—

Interest rate swaps (in accounts payable, accrued expenses and other liabilities)
3,073

 
—

 
3,073

 
—

Non-qualified deferred compensation obligation (in accounts payable, accrued expenses and other liabilities)
2,736

 
2,736

 
—

 
—

Financing obligation, at fair value (in liabilities held for sale) (1)
7,402

 
—

 
—

 
7,402

Total Liabilities
$
2,538,601

 
$
2,736

 
$
2,528,463

 
$
7,402

Fair Value at December 31, 2014:
 
 
 
 
 
 
 
Assets:
 
 
 
 
 
 
 
Mortgages and notes receivable, at fair value (1)
$
13,142

 
$
—

 
$
2,247

 
$
10,895

Marketable securities of non-qualified deferred compensation plan (in prepaid expenses and other assets)
3,635

 
3,635

 
—

 
—

Tax increment financing bond (in real estate and other assets, net, held for sale)
12,447

 
—

 
—

 
12,447

Total Assets
$
29,224

 
$
3,635

 
$
2,247

 
$
23,342

Noncontrolling Interests in the Operating Partnership
$
130,048

 
$
130,048

 
$
—

 
$
—

Liabilities:
 
 
 
 
 
 
 
Mortgages and notes payable, at fair value (1)
$
2,141,334

 
$
—

 
$
2,141,334

 
$
—

Interest rate swaps (in accounts payable, accrued expenses and other liabilities)
2,412

 
—

 
2,412

 
—

Non-qualified deferred compensation obligation (in accounts payable, accrued expenses and other liabilities)
3,635

 
3,635

 
—

 
—

Financing obligation, at fair value (in liabilities held for sale) (as revised) (1)
8,623

 
—

 
—

 
8,623

Total Liabilities (as revised)
$
2,156,004

 
$
3,635

 
$
2,143,746

 
$
8,623


__________
(1)    Amounts recorded at historical cost on our Consolidated Balance Sheets at December 31, 2015 and 2014.
Fair Value Measurements, Unobservable Inputs Reconciliation
The following table sets forth the changes in our Level 3 asset, which is recorded at fair value on our Consolidated Balance Sheets:
 
December 31,
 
2015
 
2014
Asset:
 
 
 
Tax Increment Financing Bond:
 
 
 
Beginning balance
$
12,447

 
$
13,403

Principal repayment
(1,695
)
 
(1,540
)
Unrealized gains (in AOCL)
445

 
584

Ending balance
$
11,197

 
$
12,447
Fair Value Measurements, Valuation Techniques
The following table sets forth quantitative information about the unobservable inputs of our Level 3 assets, which were recorded at fair value on our Consolidated Balance Sheets:
 
 
Valuation
Technique
 
Unobservable
Input
 
Rate/ Percentage
2015 Asset:
 
 
 
 
 
Tax increment financing bond
Income approach
 
Discount rate
 
6.93%
2014 Assets:
 
 
 
 
 
Tax increment financing bond
Income approach
 
Discount rate
 
8.4%
Impaired real estate assets
Income approach
 
Capitalization rate
 
9.5%
 
 
 
Discount rate
 
10.0%
v3.3.1.900
Equity (Tables)
 12 Months Ended
Dec. 31, 2015
Class of Stock [Line Items]  
Schedule of Stock by Class, Preferred Stock
The following table sets forth the Company's Preferred Stock:
 
Preferred Stock Issuances
 
Issue Date
 
Number of Shares Outstanding
 
Carrying Value
 
Liquidation Preference Per Share
 
Optional Redemption Date
 
Annual Dividends Payable Per Share
 
 
 
 
(in thousands)
 
 
 
 
 
 
 
 
December 31, 2015
 
 
 
 
 
 
 
 
 
 
 
 
8.625% Series A Cumulative Redeemable
 
2/12/1997
 
29

 
$
29,050

 
$
1,000

 
2/12/2027
 
$
86.25

December 31, 2014
 
 
 
 
 
 
 
 
 
 
 
 
8.625% Series A Cumulative Redeemable
 
2/12/1997
 
29

 
$
29,060

 
$
1,000

 
2/12/2027
 
$
86.25

The following table sets forth the number of shares of Common Stock reserved for future issuance under the Company's long-term equity incentive plans:
 
December 31,
 
2015
 
2014
Outstanding stock options and warrants
702,228

 
592,321

Possible future issuance under equity incentive plans
3,084,158

 
1,382,406

 
3,786,386

 
1,974,727
Common Stock [Member]  
Class of Stock [Line Items]  
Schedule of Dividends Payable
The following table sets forth the Company's estimated taxability to the common stockholders of dividends per share for federal income tax purposes:
 
 
Year Ended December 31,
 
2015
 
2014
 
2013
Ordinary income
$
1.50

 
$
1.31

 
$
1.28

Capital gains
0.13

 
0.29

 
0.26

Return of capital
0.07

 
0.10

 
0.16

Total
$
1.70

 
$
1.70

 
$
1.70
Preferred Stock [Member]  
Class of Stock [Line Items]  
Schedule of Dividends Payable
The following table sets forth the Company's estimated taxability to the preferred stockholders of dividends per share for federal income tax purposes:
 
 
Year Ended December 31,
 
2015
 
2014
 
2013
8.625% Series A Cumulative Redeemable:
 
 
 
 
 
Ordinary income
$
79.23

 
$
70.41

 
$
71.56

Capital gains
7.02

 
15.84

 
14.69

Total
$
86.25

 
$
86.25

 
$
86.25
Highwoods Realty Limited Partnership [Member]  
Class of Stock [Line Items]  
Schedule of Stock by Class, Preferred Stock
The following table sets forth the Operating Partnership's Preferred Units:
 
Preferred Unit Issuances
 
Issue Date
 
Number of
Units
Outstanding
 
Carrying
Value
 
Liquidation Preference
Per Unit
 
Optional Redemption
Date
 
Annual
Distributions
Payable
Per Unit
 
 
 
 
(in thousands)
 
 
 
 
 
 
 
 
December 31, 2015
 
 
 
 
 
 
 
 
 
 
 
 
8.625% Series A Cumulative Redeemable
 
2/12/1997
 
29

 
$
29,050

 
$
1,000

 
2/12/2027
 
$
86.25

December 31, 2014
 
 
 
 
 
 
 
 
 
 
 
 
8.625% Series A Cumulative Redeemable
 
2/12/1997
 
29

 
$
29,060

 
$
1,000

 
2/12/2027
 
$
86.25
v3.3.1.900
Employee Benefit Plans (Tables)
 12 Months Ended
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Stock by Class
The following table sets forth the Company's Preferred Stock:
 
Preferred Stock Issuances
 
Issue Date
 
Number of Shares Outstanding
 
Carrying Value
 
Liquidation Preference Per Share
 
Optional Redemption Date
 
Annual Dividends Payable Per Share
 
 
 
 
(in thousands)
 
 
 
 
 
 
 
 
December 31, 2015
 
 
 
 
 
 
 
 
 
 
 
 
8.625% Series A Cumulative Redeemable
 
2/12/1997
 
29

 
$
29,050

 
$
1,000

 
2/12/2027
 
$
86.25

December 31, 2014
 
 
 
 
 
 
 
 
 
 
 
 
8.625% Series A Cumulative Redeemable
 
2/12/1997
 
29

 
$
29,060

 
$
1,000

 
2/12/2027
 
$
86.25

The following table sets forth the number of shares of Common Stock reserved for future issuance under the Company's long-term equity incentive plans:
 
December 31,
 
2015
 
2014
Outstanding stock options and warrants
702,228

 
592,321

Possible future issuance under equity incentive plans
3,084,158

 
1,382,406

 
3,786,386

 
1,974,727
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award
The following table sets forth stock option activity:

 
Options Outstanding
 
Number of Options
 
Weighted Average Exercise Price
Balances at December 31, 2012
1,129,309

 
$
30.10

Options granted
168,700

 
36.50

Options exercised
(423,627
)
 
28.22

Balances at December 31, 2013
874,382

 
32.24

Options granted 
190,330

 
37.90

Options canceled
(134,628
)
 
41.93

Options exercised 
(352,763
)
 
27.21

Balances at December 31, 2014
577,321

 
34.92

Options granted
197,408

 
45.61

Options canceled
(3,829
)
 
40.21

Options exercised
(83,672
)
 
34.89

Balances at December 31, 2015 (1) (2)
687,228

 
$
37.97

__________
(1)
The outstanding options at December 31, 2015 had a weighted average remaining life of 6.1 years.
(2)
The Company had 218,816 options exercisable at December 31, 2015 with a weighted average exercise price of $33.03, weighted average remaining life of 3.2 years and intrinsic value of $2.3 million. Of these exercisable options, there were no exercise prices higher than the market price of our Common Stock at December 31, 2015.
Schedule of NonQualified Deferred Compensation Liability
The following table sets forth our deferred compensation liability:

 
Year Ended December 31,
 
2015
 
2014
 
2013
Beginning deferred compensation liability
$
3,635

 
$
3,996

 
$
3,354

Mark-to-market adjustment to deferred compensation (in general and administrative expenses)
(32
)
 
235

 
803

Distributions from deferred compensation plans
(867
)
 
(596
)
 
(161
)
Total deferred compensation liability
$
2,736

 
$
3,635

 
$
3,996
Stock Options [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions
The weighted average fair values of options granted during 2015, 2014 and 2013 were $6.19, $6.75 and $6.50, respectively, per option. The fair values of the options granted were determined at the grant dates using the following assumptions:

 
2015
 
2014
 
2013
Risk free interest rate (1) 
1.7
%
 
1.8
%
 
1.0
%
Common stock dividend yield (2) 
3.7
%
 
4.5
%
 
4.7
%
Expected volatility (3) 
22.4
%
 
30.3
%
 
32.4
%
Average expected option life (years) (4)
5.75

 
5.75

 
5.75

__________
(1)
Represents the interest rate as of the grant date on US treasury bonds having the same life as the estimated life of the option grants.
(2)
The dividend yield is calculated utilizing the dividends paid for the previous one-year period and the per share price of Common Stock on the date of grant.
(3)
Based on the historical volatility of Common Stock over a period relevant to the related stock option grant.
(4)
The average expected option life is based on an analysis of the Company's historical data.
Time-Based Restricted Stock [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Share-based Compensation, Restricted Stock Units Award Activity
The following table sets forth time-based restricted stock activity:
 
 
Number of Shares
 
Weighted Average Grant Date Fair Value
Restricted shares outstanding at December 31, 2012
222,502

 
$
30.31

Awarded and issued (1)
86,144

 
36.64

Vested (2)
(94,037
)
 
27.80

Forfeited
(1,813
)
 
36.01

Restricted shares outstanding at December 31, 2013
212,796

 
33.96

Awarded and issued (1)
94,932

 
37.76

Vested (2)
(85,660
)
 
32.87

Restricted shares outstanding at December 31, 2014
222,068

 
35.97

Awarded and issued (1)
71,994

 
45.91

Vested (2)
(85,809
)
 
35.14

Forfeited
(3,533
)
 
39.94

Restricted shares outstanding at December 31, 2015
204,720

 
$
39.74

__________
(1)
The weighted average fair value at grant date of time-based restricted stock issued during the years ended December 31, 2015, 2014 and 2013 was $3.3 million, $3.6 million and $3.2 million, respectively.
(2)
The vesting date fair value of time-based restricted stock that vested during the years ended December 31, 2015, 2014 and 2013 was $3.9 million, $3.2 million and $3.4 million, respectively. Vested shares include those shares surrendered by employees to satisfy tax withholding obligations in connection with such vesting.
Total Return-Based Restricted Stock [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions
The fair values of the total return-based restricted stock granted were determined at the grant dates using a Monte Carlo simulation model and the following assumptions:
 
 
2015
 
2014
 
2013
Risk free interest rate (1) 
1.0
%
 
0.7
%
 
0.4
%
Common stock dividend yield (2) 
3.8
%
 
4.7
%
 
4.9
%
Expected volatility (3) 
43.0
%
 
43.4
%
 
43.4
%
__________
(1)
Represents the interest rate as of the grant date on US treasury bonds having the same life as the estimated life of the total return-based restricted stock grants.
(2)
The dividend yield is calculated utilizing the dividends paid for the previous one-year period and the average per share price of Common Stock during the three-month period preceding the date of grant.
(3)
Based on the historical volatility of Common Stock over a period relevant to the related total return-based restricted stock grant.
Schedule of Share-based Compensation, Restricted Stock Units Award Activity
The following table sets forth total return-based restricted stock activity:

 
Number of Shares
 
Weighted Average Grant Date Fair Value
Restricted shares outstanding at December 31, 2012
125,288

 
$
32.87

Awarded and issued (1)
65,486

 
31.73

Vested (2)
(41,863
)
 
24.75

Forfeited
(15,523
)
 
24.75

Restricted shares outstanding at December 31, 2013
133,388

 
35.29

Awarded and issued (1)
74,569

 
35.58

Restricted shares outstanding at December 31, 2014
207,957

 
35.70

Awarded and issued (1) (3)
118,817

 
37.64

Vested (2) (3)
(129,762
)
 
31.97

Forfeited
(1,709
)
 
37.25

Restricted shares outstanding at December 31, 2015
195,303

 
$
36.66

__________
(1)
The fair value at grant date of total return-based restricted stock issued during the years ended December 31, 2015, 2014 and 2013 was $2.5 million, $2.7 million and $2.1 million, respectively, at target.
(2)
The vesting date fair value of total return-based restricted stock that vested during the years ended December 31, 2015 and 2013 was $5.9 million and $1.5 million, respectively, based on the performance of the specific plans. Vested shares include those shares surrendered by employees to satisfy tax withholding obligations in connection with such vesting. There were no vested shares of total return-based restricted stock during the year ended December 31, 2014.
(3)
The 2015 amounts include 61,860 additional shares from the 2012 plan since the plan's payout was in excess of the initial 100% target.
v3.3.1.900
Accumulated Other Comprehensive Loss (Tables)
 12 Months Ended
Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Components of Accumulated Comprehensive Loss

The following table sets forth the components of AOCL:

 
December 31,
 
2015
 
2014
Tax increment financing bond:
 
 
 
Beginning balance
$
(445
)
 
$
(1,029
)
Unrealized gains on tax increment financing bond
445

 
584

Ending balance
—

 
(445
)
Cash flow hedges:
 
 
 
Beginning balance
(3,467
)
 
(1,582
)
Unrealized losses on cash flow hedges
(4,040
)
 
(5,662
)
Amortization of cash flow hedges (1)
3,696

 
3,777

Ending balance
(3,811
)
 
(3,467
)
Total accumulated other comprehensive loss
$
(3,811
)
 
$
(3,912
)

__________
(1)
Amounts reclassified out of AOCL into contractual interest expense.
v3.3.1.900
Rental and Other Revenues; Rental Property and Other Expenses (Tables)
 12 Months Ended
Dec. 31, 2015
Rental and Other Revenues; Rental Property And Other Expenses [Abstract]  
Schedule of Rental and Other Revenues
The following table sets forth our rental and other revenues from continuing operations:

 
Year Ended December 31,
 
2015
 
2014
 
2013
Contractual rents, net
$
513,909

 
$
476,684

 
$
437,855

Straight-line rental income, net
22,054

 
21,045

 
16,653

Amortization of lease incentives
(1,493
)
 
(1,419
)
 
(1,361
)
Cost recovery income, net
45,247

 
39,112

 
31,869

Lease termination fees
990

 
658

 
1,436

Fee income
3,717

 
3,313

 
5,282

Other miscellaneous operating revenues
20,247

 
16,478

 
13,274

 
$
604,671

 
$
555,871

 
$
505,008
Schedule of Future Minimum Rental Payments for Operating Leases
The following table sets forth our scheduled future minimum base rents to be received from customers for leases in effect at December 31, 2015 for the properties that we wholly own:

2016
$
566,672

2017
539,352

2018
502,547

2019
437,797

2020
362,295

Thereafter
1,304,530

 
$
3,713,193
Operating Costs and Other Expenses
The following table sets forth our rental property and other expenses from continuing operations:

 
Year Ended December 31,
 
2015
 
2014
 
2013
Utilities, insurance and real estate taxes
$
117,470

 
$
113,226

 
$
101,036

Maintenance, cleaning and general building
79,091

 
74,109

 
67,319

Property management and administrative expenses
12,446

 
12,093

 
11,515

Other miscellaneous operating expenses
6,934

 
6,456

 
4,317

 
$
215,941

 
$
205,884

 
$
184,187
v3.3.1.900
Real Estate and Other Assets Held For Sale and Discontinued Operations (Tables)
 12 Months Ended
Dec. 31, 2015
Discontinued Operations and Disposal Groups [Abstract]  
Real Estate and Other Assets of the Properties Classified As Held For Sale
The following tables set forth the assets and liabilities related to discontinued operations at December 31, 2015 and 2014 and the results of operations and cash flows for the years ended December 31, 2015, 2014 and 2013:
 
 
December 31,
 
2015
 
2014
Assets:
 
 
 
Land
$
16,681

 
$
16,406

Buildings and tenant improvements
322,811

 
313,323

Development in-process
—

 
4,562

Land held for development
1,089

 
2,084

Less-accumulated depreciation
(131,274
)
 
(131,419
)
Net real estate assets
209,307

 
204,956

Accrued straight-line rents receivable, net
11,730

 
11,643

Deferred leasing costs, net
6,690

 
6,320

Prepaid expenses and other assets, net
13,221

 
13,896

Real estate and other assets, net, held for sale
$
240,948

 
$
236,815

Liabilities:
 
 
 
Accounts payable, accrued expenses and other liabilities
$
(6,717
)
 
$
(6,151
)
Financing obligation
(7,402
)
 
(8,962
)
Liabilities held for sale
$
(14,119
)
 
$
(15,113
)
Operations Classified As Discontinued Operations
 
Year Ended December 31,
 
2015
 
2014
 
2013
Rental and other revenues
$
50,935

 
$
52,597

 
$
72,614

Operating expenses:
 
 
 
 
 
Rental property and other expenses
20,805

 
19,620

 
27,440

Depreciation and amortization
14,039

 
15,386

 
19,773

General and administrative
2,366

 
965

 
812

Total operating expenses
37,210

 
35,971

 
48,025

Interest expense
621

 
725

 
817

Other income
2,635

 
2,700

 
3,086

Income from discontinued operations
15,739

 
18,601

 
26,858

Impairments of real estate assets
—

 
—

 
(2,194
)
Net gains on disposition of discontinued operations
—

 
384

 
63,792

Total income from discontinued operations
$
15,739

 
$
18,985

 
$
88,456


 
 
Year Ended December 31,
 
2015
 
2014
 
2013
Cash flows from operating activities
$
27,579

 
$
32,485

 
$
32,644

Cash flows from investing activities
$
(16,445
)
 
$
(8,279
)
 
$
(7,482
)
v3.3.1.900
Earnings Per Share and Per Unit (Tables)
 12 Months Ended
Dec. 31, 2015
Earnings Per Share/Unit Basic and Diluted [Line Items]  
Earnings Per Share
The following table sets forth the computation of basic and diluted earnings per share of the Company:

 
Year Ended December 31,
 
2015
 
2014
 
2013
Earnings per Common Share - basic:
 
 
 
 
 
Numerator:
 
 
 
 
 
Income from continuing operations
$
85,521

 
$
96,987

 
$
42,641

Net (income) attributable to noncontrolling interests in the Operating Partnership from continuing operations
(2,443
)
 
(2,945
)
 
(1,294
)
Net (income) attributable to noncontrolling interests in consolidated affiliates from continuing operations
(1,264
)
 
(1,466
)
 
(949
)
Dividends on Preferred Stock
(2,506
)
 
(2,507
)
 
(2,508
)
Income from continuing operations available for common stockholders
79,308

 
90,069

 
37,890

Income from discontinued operations
15,739

 
18,985

 
88,456

Net (income) attributable to noncontrolling interests in the Operating Partnership from discontinued operations
(475
)
 
(597
)
 
(3,397
)
Income from discontinued operations available for common stockholders
15,264

 
18,388

 
85,059

Net income available for common stockholders
$
94,572

 
$
108,457

 
$
122,949

Denominator:
 
 
 
 
 
Denominator for basic earnings per Common Share – weighted average shares
94,404

 
90,743

 
85,335

Earnings per Common Share - basic:
 
 
 
 
 
Income from continuing operations available for common stockholders
$
0.84

 
$
1.00

 
$
0.44

Income from discontinued operations available for common stockholders
0.16

 
0.20

 
1.00

Net income available for common stockholders
$
1.00

 
$
1.20

 
$
1.44

Earnings per Common Share - diluted:
 
 
 
 
 
Numerator:
 
 
 
 
 
Income from continuing operations
$
85,521

 
$
96,987

 
$
42,641

Net (income) attributable to noncontrolling interests in consolidated affiliates from continuing operations
(1,264
)
 
(1,466
)
 
(949
)
Dividends on Preferred Stock
(2,506
)
 
(2,507
)
 
(2,508
)
Income from continuing operations available for common stockholders before net (income) attributable to noncontrolling interests in the Operating Partnership
81,751

 
93,014

 
39,184

Income from discontinued operations available for common stockholders
15,739

 
18,985

 
88,456

Net income available for common stockholders before net (income) attributable to noncontrolling interests in the Operating Partnership
$
97,490

 
$
111,999

 
$
127,640

Denominator:
 
 
 
 
 
Denominator for basic earnings per Common Share – weighted average shares
94,404

 
90,743

 
85,335

Add:
 
 
 
 
 
Stock options using the treasury method
87

 
119

 
114

Noncontrolling interests Common Units
2,915

 
2,938

 
3,387

Denominator for diluted earnings per Common Share – adjusted weighted average shares and assumed conversions (1) (2)
97,406

 
93,800

 
88,836

Earnings per Common Share - diluted:
 
 
 
 
 
Income from continuing operations available for common stockholders
$
0.84

 
$
0.99

 
$
0.44

Income from discontinued operations available for common stockholders
0.16

 
0.20

 
1.00

Net income available for common stockholders
$
1.00

 
$
1.19

 
$
1.44

__________

17.
Earnings Per Share and Per Unit - Continued
 
(1)
There were 0.2 million and 0.3 million options outstanding during the years ended December 31, 2015 and 2013, respectively, that were not included in the computation of diluted earnings per share because the impact of including such options would be anti-dilutive. There were no such options outstanding during the year ended December 31, 2014.
(2)
Includes all unvested restricted stock where dividends on such restricted stock are non-forfeitable.
Earnings Per Unit
The following table sets forth the computation of basic and diluted earnings per unit of the Operating Partnership:

 
Year Ended December 31,
 
2015
 
2014
 
2013
Earnings per Common Unit - basic:
 
 
 
 
 
Numerator:
 
 
 
 
 
Income from continuing operations
$
85,521

 
$
96,987

 
$
42,590

Net (income) attributable to noncontrolling interests in consolidated affiliates from continuing operations
(1,264
)
 
(1,466
)
 
(949
)
Distributions on Preferred Units
(2,506
)
 
(2,507
)
 
(2,508
)
Income from continuing operations available for common unitholders
81,751

 
93,014

 
39,133

Income from discontinued operations available for common unitholders
15,739

 
18,985

 
88,456

Net income available for common unitholders
$
97,490

 
$
111,999

 
$
127,589

Denominator:
 
 
 
 
 
Denominator for basic earnings per Common Unit – weighted average units
96,910

 
93,272

 
88,313

Earnings per Common Unit - basic:
 
 
 
 
 
Income from continuing operations available for common unitholders
$
0.84

 
$
1.00

 
$
0.44

Income from discontinued operations available for common unitholders
0.17

 
0.20

 
1.00

Net income available for common unitholders
$
1.01

 
$
1.20

 
$
1.44

Earnings per Common Unit - diluted:
 
 
 
 
 
Numerator:
 
 
 
 
 
Income from continuing operations
$
85,521

 
$
96,987

 
$
42,590

Net (income) attributable to noncontrolling interests in consolidated affiliates from continuing operations
(1,264
)
 
(1,466
)
 
(949
)
Distributions on Preferred Units
(2,506
)
 
(2,507
)
 
(2,508
)
Income from continuing operations available for common unitholders
81,751

 
93,014

 
39,133

Income from discontinued operations available for common unitholders
15,739

 
18,985

 
88,456

Net income available for common unitholders
$
97,490

 
$
111,999

 
$
127,589

Denominator:
 
 
 
 
 
Denominator for basic earnings per Common Unit – weighted average units
96,910

 
93,272

 
88,313

Add:
 
 
 
 
 
Stock options using the treasury method
87

 
119

 
114

Denominator for diluted earnings per Common Unit – adjusted weighted average units and assumed conversions (1) (2)
96,997

 
93,391

 
88,427

Earnings per Common Unit - diluted:
 
 
 
 
 
Income from continuing operations available for common unitholders
$
0.84

 
$
1.00

 
$
0.44

Income from discontinued operations available for common unitholders
0.17

 
0.20

 
1.00

Net income available for common unitholders
$
1.01

 
$
1.20

 
$
1.44

__________
(1)
There were 0.2 million and 0.3 million options outstanding during the years ended December 31, 2015 and 2013, respectively, that were not included in the computation of diluted earnings per unit because the impact of including such options would be anti-dilutive. There were no such options outstanding during the year ended December 31, 2014.
(2)
Includes all unvested restricted stock where dividends on such restricted stock are non-forfeitable.
 
v3.3.1.900
Income Taxes Income Taxes (Tables)
 12 Months Ended
Dec. 31, 2015
Income Tax Disclosure [Abstract]  
Schedule of Income Tax Expense/(Benefit)
The following table sets forth the Company's income tax expense/(benefit):

 
Year Ended December 31,
 
2015
 
2014
 
2013
Current tax expense:
 
 
 
 
 
Federal
$
949

 
$
1,480

 
$
60

State
351

 
161

 
312

 
1,300

 
1,641

 
372

Deferred tax expense/(benefit):
 
 
 
 
 
Federal
(233
)
 
(1,628
)
 
1,479

State
(115
)
 
(305
)
 
277

 
(348
)
 
(1,933
)
 
1,756

Less tax expense netted against gain included in equity in earnings of unconsolidated affiliates
—

 
—

 
(1,721
)
Less tax expense netted against gain on disposition of property
(518
)
 
—

 
—

Total income tax expense/(benefit)
$
434

 
$
(292
)
 
$
407
v3.3.1.900
Segment Information (Tables)
 12 Months Ended
Dec. 31, 2015
Segment Reporting [Abstract]  
Segment Information
The following tables summarize the rental and other revenues and net operating income, the primary industry property-level performance metric used by our chief operating decision maker which is defined as rental and other revenues less rental property and other expenses, for each of our reportable segments. Our segment information for the years ended December 31, 2014 and 2013 have been retrospectively revised from previously reported amounts to reflect a change in our reportable segments.

 
Year Ended December 31,
 
2015
 
2014
 
2013
Rental and Other Revenues:
 
 
 
 
 
Office:
 
 
 
 
 
Atlanta, GA
$
108,590

 
$
96,075

 
$
80,330

Greensboro, NC
21,251

 
25,018

 
26,047

Greenville, SC
—

 
2,140

 
3,399

Memphis, TN
47,137

 
41,016

 
38,369

Nashville, TN
88,310

 
80,722

 
62,054

Orlando, FL
44,621

 
36,574

 
21,798

Pittsburgh, PA
59,392

 
56,692

 
56,125

Raleigh, NC
102,841

 
87,428

 
85,417

Richmond, VA
42,089

 
45,559

 
47,576

Tampa, FL
75,715

 
69,693

 
68,519

Total Office Segment
589,946

 
540,917

 
489,634

Other
14,725

 
14,954

 
15,374

Total Rental and Other Revenues
$
604,671

 
$
555,871

 
$
505,008


19.
Segment Information - Continued

 
Year Ended December 31,
 
2015
 
2014
 
2013
Net Operating Income:
 
 
 
 
 
Office:
 
 
 
 
 
Atlanta, GA
$
67,094

 
$
58,180

 
$
49,650

Greensboro, NC
13,395

 
15,784

 
16,788

Greenville, SC
—

 
1,150

 
1,893

Memphis, TN
29,534

 
24,376

 
22,133

Nashville, TN
62,387

 
55,354

 
42,598

Orlando, FL
25,524

 
21,286

 
12,048

Pittsburgh, PA
34,348

 
31,505

 
31,134

Raleigh, NC
72,981

 
61,317

 
60,075

Richmond, VA
27,922

 
30,021

 
32,454

Tampa, FL
45,447

 
40,875

 
41,573

Total Office Segment
378,632

 
339,848

 
310,346

Other
10,098

 
10,139

 
10,475

Total Net Operating Income
388,730

 
349,987

 
320,821

Reconciliation to income from continuing operations before disposition of investment properties and activity in unconsolidated affiliates:
 
 
 
 
 
Depreciation and amortization
(201,918
)
 
(180,637
)
 
(162,937
)
Impairments of real estate assets
—

 
(588
)
 
—

General and administrative expenses
(37,642
)
 
(35,258
)
 
(36,381
)
Interest expense
(86,052
)
 
(85,127
)
 
(91,886
)
Other income
1,726

 
2,431

 
3,312

Income from continuing operations before disposition of investment properties and activity in unconsolidated affiliates
$
64,844

 
$
50,808

 
$
32,929




19.
Segment Information - Continued

 
December 31,
 
2015
 
2014
 
 
 
(as revised)
Total Assets:
 
 
 
Office:
 
 
 
Atlanta, GA
$
1,013,226

 
$
700,085

Greensboro, NC
131,027

 
139,479

Memphis, TN
277,866

 
280,186

Nashville, TN
591,111

 
527,317

Orlando, FL
303,843

 
291,611

Pittsburgh, PA
339,186

 
334,539

Raleigh, NC
663,617

 
669,450

Richmond, VA
211,574

 
215,987

Tampa, FL
548,814

 
415,042

Total Office Segment
4,080,264

 
3,573,696

Other (1)
413,168

 
425,427

Total Assets
$
4,493,432

 
$
3,999,123


__________
(1)
Includes the Plaza assets, which are included in real estate and other assets, net, held for sale on our Consolidated Balance Sheets.
v3.3.1.900
Quarterly Financial Data (Unaudited) (Tables)
 12 Months Ended
Dec. 31, 2015
Quarterly Financial Data [Line Items]  
Schedule of Quarterly Financial Data
The following tables set forth quarterly financial information of the Company:

 
Year Ended December 31, 2015
 
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
 
Total
Rental and other revenues (1)
$
145,236

 
$
148,543

 
$
150,766

 
$
160,126

 
$
604,671

 
 
 
 
 
 
 
 
 
 
Income from continuing operations (1)
16,920

 
22,221

 
27,352

 
19,028

 
85,521

Income from discontinued operations (1)
3,915

 
4,670

 
4,265

 
2,889

 
15,739

Net income
20,835

 
26,891

 
31,617

 
21,917

 
101,260

Net (income) attributable to noncontrolling interests in the Operating Partnership
(596
)
 
(782
)
 
(918
)
 
(622
)
 
(2,918
)
Net (income) attributable to noncontrolling interests in consolidated affiliates
(296
)
 
(328
)
 
(324
)
 
(316
)
 
(1,264
)
Dividends on Preferred Stock
(627
)
 
(626
)
 
(626
)
 
(627
)
 
(2,506
)
Net income available for common stockholders
$
19,316

 
$
25,155

 
$
29,749

 
$
20,352

 
$
94,572

Earnings per Common Share – basic:
 
 
 
 
 
 
 
 
 
Income from continuing operations available for common stockholders
$
0.17

 
$
0.22

 
$
0.27

 
$
0.18

 
$
0.84

Income from discontinued operations available for common stockholders
0.04

 
0.05

 
0.04

 
0.03

 
0.16

Net income available for common stockholders
$
0.21

 
$
0.27

 
$
0.31

 
$
0.21

 
$
1.00

Earnings per Common Share – diluted:
 
 
 
 
 
 
 
 
 
Income from continuing operations available for common stockholders
$
0.17

 
$
0.22

 
$
0.27

 
$
0.18

 
$
0.84

Income from discontinued operations available for common stockholders
0.04

 
0.05

 
0.04

 
0.03

 
0.16

Net income available for common stockholders
$
0.21

 
$
0.27

 
$
0.31

 
$
0.21

 
$
1.00


20.
Quarterly Financial Data (Unaudited) - Continued

 
Year Ended December 31, 2014
 
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
 
Total
Rental and other revenues (1)
$
135,821

 
$
139,956

 
$
139,370

 
$
140,724

 
$
555,871

 
 
 
 
 
 
 
 
 
 
Income from continuing operations (1)
8,979

 
20,374

 
49,483

 
18,151

 
96,987

Income from discontinued operations (1)
4,597

 
4,138

 
4,816

 
5,434

 
18,985

Net income
13,576

 
24,512

 
54,299

 
23,585

 
115,972

Net (income) attributable to noncontrolling interests in the Operating Partnership
(398
)
 
(742
)
 
(1,673
)
 
(729
)
 
(3,542
)
Net (income) attributable to noncontrolling interests in consolidated affiliates
(423
)
 
(438
)
 
(291
)
 
(314
)
 
(1,466
)
Dividends on Preferred Stock
(627
)
 
(627
)
 
(627
)
 
(626
)
 
(2,507
)
Net income available for common stockholders
$
12,128

 
$
22,705

 
$
51,708

 
$
21,916

 
$
108,457

Earnings per Common Share – basic:
 
 
 
 
 
 
 
 
 
Income from continuing operations available for common stockholders
$
0.09

 
$
0.21

 
$
0.52

 
$
0.18

 
$
1.00

Income from discontinued operations available for common stockholders
0.04

 
0.04

 
0.05

 
0.06

 
0.20

Net income available for common stockholders
$
0.13

 
$
0.25

 
$
0.57

 
$
0.24

 
$
1.20

Earnings per Common Share – diluted:
 
 
 
 
 
 
 
 
 
Income from continuing operations available for common stockholders
$
0.09

 
$
0.21

 
$
0.52

 
$
0.18

 
$
0.99

Income from discontinued operations available for common stockholders
0.04

 
0.04

 
0.05

 
0.06

 
0.20

Net income available for common stockholders
$
0.13

 
$
0.25

 
$
0.57

 
$
0.24

 
$
1.19

__________


20.
Quarterly Financial Data (Unaudited) – Continued
 
(1)
As a result of discontinued operations, the amounts presented may not equal the amounts previously reported in the most recent Form 10-Qs or prior 10-K for each period. Below is a reconciliation to the amounts previously reported:
 
 
Quarter Ended
 
March 31,
 
June 30,
 
September 30,
 
2015
 
2015
 
2015
Rental and other revenues, as reported
$
157,310

 
$
161,136

 
$
163,736

Discontinued operations
(12,074
)
 
(12,593
)
 
(12,970
)
Rental and other revenues, as adjusted
$
145,236

 
$
148,543

 
$
150,766

Income from continuing operations, as reported
$
20,835

 
$
26,891

 
$
31,617

Discontinued operations
(3,915
)
 
(4,670
)
 
(4,265
)
Income from continuing operations, as adjusted
$
16,920

 
$
22,221

 
$
27,352

Income from discontinued operations, as reported
$
—

 
$
—

 
$
—

Additional discontinued operations from properties sold subsequent to the respective reporting period
3,915

 
4,670

 
4,265

Income from discontinued operations, as adjusted
$
3,915

 
$
4,670

 
$
4,265


 
Quarter Ended
 
March 31,
 
June 30,
 
September 30,
 
December 31,
 
2014
 
2014
 
2014
 
2014
Rental and other revenues, as reported
$
148,453

 
$
152,722

 
$
152,629

 
$
154,664

Discontinued operations
(12,632
)
 
(12,766
)
 
(13,259
)
 
(13,940
)
Rental and other revenues, as adjusted
$
135,821

 
$
139,956

 
$
139,370

 
$
140,724

Income from continuing operations, as reported
$
13,192

 
$
24,512

 
$
54,299

 
$
23,585

Discontinued operations
(4,213
)
 
(4,138
)
 
(4,816
)
 
(5,434
)
Income from continuing operations, as adjusted
$
8,979

 
$
20,374

 
$
49,483

 
$
18,151

Income from discontinued operations, as reported
$
384

 
$
—

 
$
—

 
$
—

Additional discontinued operations from properties sold subsequent to the respective reporting period
4,213

 
4,138

 
4,816

 
5,434

Income from discontinued operations, as adjusted
$
4,597

 
$
4,138

 
$
4,816

 
$
5,434




20.
Quarterly Financial Data (Unaudited) - Continued

The following tables set forth quarterly financial information of the Operating Partnership:

 
Year Ended December 31, 2015
 
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
 
Total
Rental and other revenues (1)
$
145,236

 
$
148,543

 
$
150,766

 
$
160,126

 
$
604,671

 
 
 
 
 
 
 
 
 
 
Income from continuing operations (1)
16,920

 
22,221

 
27,352

 
19,028

 
85,521

Income from discontinued operations (1)
3,915

 
4,670

 
4,265

 
2,889

 
15,739

Net income
20,835

 
26,891

 
31,617

 
21,917

 
101,260

Net (income) attributable to noncontrolling interests in consolidated affiliates
(296
)
 
(328
)
 
(324
)
 
(316
)
 
(1,264
)
Distributions on Preferred Units
(627
)
 
(626
)
 
(626
)
 
(627
)
 
(2,506
)
Net income available for common unitholders
$
19,912

 
$
25,937

 
$
30,667

 
$
20,974

 
$
97,490

Earnings per Common Unit – basic:
 
 
 
 
 
 
 
 
 
Income from continuing operations available for common unitholders
$
0.17

 
$
0.22

 
$
0.27

 
$
0.18

 
$
0.84

Income from discontinued operations available for common unitholders
0.04

 
0.05

 
0.05

 
0.03

 
0.17

Net income available for common unitholders
$
0.21

 
$
0.27

 
$
0.32

 
$
0.21

 
$
1.01

Earnings per Common Unit – diluted:
 
 
 
 
 
 
 
 
 
Income from continuing operations available for common unitholders
$
0.17

 
$
0.22

 
$
0.27

 
$
0.18

 
$
0.84

Income from discontinued operations available for common unitholders
0.04

 
0.05

 
0.05

 
0.03

 
0.17

Net income available for common unitholders
$
0.21

 
$
0.27

 
$
0.32

 
$
0.21

 
$
1.01


20.
Quarterly Financial Data (Unaudited) - Continued

 
Year Ended December 31, 2014
 
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
 
Total
Rental and other revenues (1)
$
135,821

 
$
139,956

 
$
139,370

 
$
140,724

 
$
555,871

 
 
 
 
 
 
 
 
 
 
Income from continuing operations (1)
8,979

 
20,374

 
49,483

 
18,151

 
96,987

Income from discontinued operations (1)
4,597

 
4,138

 
4,816

 
5,434

 
18,985

Net income
13,576

 
24,512

 
54,299

 
23,585

 
115,972

Net (income) attributable to noncontrolling interests in consolidated affiliates
(423
)
 
(438
)
 
(291
)
 
(314
)
 
(1,466
)
Distributions on Preferred Units
(627
)
 
(627
)
 
(627
)
 
(626
)
 
(2,507
)
Net income available for common unitholders
$
12,526

 
$
23,447

 
$
53,381

 
$
22,645

 
$
111,999

Earnings per Common Unit – basic:
 
 
 
 
 
 
 
 
 
Income from continuing operations available for common unitholders
$
0.09

 
$
0.21

 
$
0.52

 
$
0.18

 
$
1.00

Income from discontinued operations available for common unitholders
0.05

 
0.04

 
0.05

 
0.06

 
0.20

Net income available for common unitholders
$
0.14

 
$
0.25

 
$
0.57

 
$
0.24

 
$
1.20

Earnings per Common Unit – diluted:
 
 
 
 
 
 
 
 
 
Income from continuing operations available for common unitholders
$
0.09

 
$
0.21

 
$
0.52

 
$
0.18

 
$
1.00

Income from discontinued operations available for common unitholders
0.05

 
0.04

 
0.05

 
0.06

 
0.20

Net income available for common unitholders
$
0.14

 
$
0.25

 
$
0.57

 
$
0.24

 
$
1.20

__________
 

20.
Quarterly Financial Data (Unaudited) – Continued
 
(1)
As a result of discontinued operations, the amounts presented may not equal the amounts previously reported in the most recent Form 10-Qs or prior 10-K for each period. Below is a reconciliation to the amounts previously reported:

 
Quarter Ended
 
March 31,
 
June 30,
 
September 30,
 
2015
 
2015
 
2015
Rental and other revenues, as reported
$
157,310

 
$
161,136

 
$
163,736

Discontinued operations
(12,074
)
 
(12,593
)
 
(12,970
)
Rental and other revenues, as adjusted
$
145,236

 
$
148,543

 
$
150,766

Income from continuing operations, as reported
$
20,835

 
$
26,891

 
$
31,617

Discontinued operations
(3,915
)
 
(4,670
)
 
(4,265
)
Income from continuing operations, as adjusted
$
16,920

 
$
22,221

 
$
27,352

Income from discontinued operations, as reported
$
—

 
$
—

 
$
—

Additional discontinued operations from properties sold subsequent to the respective reporting period
3,915

 
4,670

 
4,265

Income from discontinued operations, as adjusted
$
3,915

 
$
4,670

 
$
4,265


 
Quarter Ended
 
March 31,
 
June 30,
 
September 30,
 
December 31,
 
2014
 
2014
 
2014
 
2014
Rental and other revenues, as reported
$
148,453

 
$
152,722

 
$
152,629

 
$
154,664

Discontinued operations
(12,632
)
 
(12,766
)
 
(13,259
)
 
(13,940
)
Rental and other revenues, as adjusted
$
135,821

 
$
139,956

 
$
139,370

 
$
140,724

Income from continuing operations, as reported
$
13,192

 
$
24,512

 
$
54,299

 
$
23,585

Discontinued operations
(4,213
)
 
(4,138
)
 
(4,816
)
 
(5,434
)
Income from continuing operations, as adjusted
$
8,979

 
$
20,374

 
$
49,483

 
$
18,151

Income from discontinued operations, as reported
$
384

 
$
—

 
$
—

 
$
—

Additional discontinued operations from properties sold subsequent to the respective reporting period
4,213

 
4,138

 
4,816

 
5,434

Income from discontinued operations, as adjusted
$
4,597

 
$
4,138

 
$
4,816

 
$
5,434
v3.3.1.900
Description of Business and Significant Accounting Policies (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
USD ($)
ft²
a
property
customers
shares
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Description of Business [Abstract]      
Rentable square feet of commercial real estate (in square feet) | ft² 32,486,000    
Rentable square feet of commercial real estate under development (in square feet) | ft² 1,454,200    
Undeveloped land suitable for future development (in acres) | a 500    
Number of common units required to convert to one share of common stock (in shares) | shares 1    
Number of trading days preceeding Redemption Notice Date (in days) 10 days    
Percentage of equity interest in joint ventures, maximum 50.00%    
Consolidated in-service office properties not wholly owned (in units) | property 3    
Joint venture partner's interest in unconsolidated affiliate (in hundredths) 80.00%    
Real estate assets, depreciation expense $ 168,663 $ 154,448 $ 138,163
Maturity of highly liquid investments (in months) 3 months    
Percent of annual REIT taxable income required to pay to the Company's stockholders 90.00%    
Customers with leases on wholly owned properties | customers 1,910    
Percent of annualized cash rental revenue derived from geographic locations 10.00%    
Limit of consolidated revenue generated by any single customer 6.00%    
Adjustment interval of variable debt interest rates, mimimum (in months) 1 month    
Adjustment interval of variable debt interest rates, maximum (in months) 3 months    
Net real estate assets $ 3,762,223 3,248,045  
Investments in and advances to unconsolidated affiliates 20,676 50,685  
Total Assets 4,493,432 3,999,123  
Distributions in excess of net income available for common stockholders (1,023,135) (957,370)  
Total Liabilities, Noncontrolling Interests in the Operating Partnership and Equity $ 4,493,432 $ 3,999,123  
Section 1031 Exchange VIE Member      
Description of Business [Abstract]      
Number of office properties acquired | property 3    
Like-kind exchange agreement, maximum (in days) P180D    
VIE total assets $ 421,300    
VIE total liabilities 16,300    
VIE total cash flows $ 7,100    
Building [Member]      
Description of Business [Abstract]      
Property, plant and equipment useful life 40 years    
Building Improvements [Member]      
Description of Business [Abstract]      
Property, plant and equipment useful life 15 years    
Furniture and Fixtures [Member] | Minimum [Member]      
Description of Business [Abstract]      
Property, plant and equipment useful life 5 years    
Furniture and Fixtures [Member] | Maximum [Member]      
Description of Business [Abstract]      
Property, plant and equipment useful life 7 years    
Leaseholds and Leasehold Improvements [Member] | Minimum [Member]      
Description of Business [Abstract]      
Property, plant and equipment useful life 3 years    
Leaseholds and Leasehold Improvements [Member] | Maximum [Member]      
Description of Business [Abstract]      
Property, plant and equipment useful life 10 years    
Highwoods Properties, Inc. [Member]      
Description of Business [Abstract]      
Common Units of partnership owned (in shares) | shares 95,700,000    
Percentage of ownership of Common Units 97.10% 96.90%  
Common units redeemed for a like number of common shares of stock (in shares) | shares 37,203    
Joint venture partner's interest in unconsolidated affiliate (in hundredths) 80.00%    
Gain recognized on partial sale $ 2,200    
Highwoods Realty Limited Partnership [Member]      
Description of Business [Abstract]      
Common Units of partnership not owned by the Company (in shares) | shares 2,900,000    
Net real estate assets $ 3,762,223 $ 3,248,045  
Investments in and advances to unconsolidated affiliates 20,676 50,685  
Total Assets 4,493,432 3,999,229  
Total Liabilities, Noncontrolling Interests in the Operating Partnership and Equity $ 4,493,432 3,999,229  
Previously Reported Disclosure [Member] | Highwoods Properties, Inc. [Member]      
Description of Business [Abstract]      
Net real estate assets   (29,400)  
Investments in and advances to unconsolidated affiliates   23,614  
Total Assets   (5,786)  
Financing obligation   (14,557)  
Distributions in excess of net income available for common stockholders   8,771  
Total Liabilities, Noncontrolling Interests in the Operating Partnership and Equity   $ (5,786)  
v3.3.1.900
Real Estate Assets Real Estate Assets (Details)
ft² in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2015
USD ($)
ft²
property
Dec. 31, 2014
USD ($)
ft²
property
Dec. 31, 2013
USD ($)
ft²
property
Dec. 31, 2012
USD ($)
Acquisitions [Abstract]        
Asset acquisition, contingent consideration liability $ 900 $ 3,300 $ 0  
Gain on acquisition of controlling interest in unconsolidated affiliate 0 0 7,451  
Acquisition-related costs 1,000 500 1,800  
Dispositions [Abstract]        
Gains/(losses) on disposition of discontinued operations 0 384 63,792  
Gains/(losses) on disposition of property 11,444 44,352 (3)  
Impairments [Abstract]        
Impairments of real estate assets $ 0 $ 588 $ 0  
Tampa, FL Building Acquisition (09/2015) [Member]        
Acquisitions [Abstract]        
Net rentable square feet of acquisition (in sqft) | ft² 528      
Acquisition purchase price $ 113,500      
Tampa, FL Land Acquisition (09/2015) [Member]        
Acquisitions [Abstract]        
Acquisition purchase price $ 2,200      
Atlanta, GA Building Acquisition (09/2015) [Member]        
Acquisitions [Abstract]        
Number of office properties acquired | property 2      
Net rentable square feet of acquisition (in sqft) | ft² 896      
Acquisition purchase price $ 290,300      
Atlanta, GA Land Acquisition [Member] (6/2015) [Member]        
Acquisitions [Abstract]        
Acquisition purchase price 5,200      
Asset acquisition, contingent consideration liability $ 900      
Orlando, FL Building Acquisition [Member] (6/2015) [Member]        
Acquisitions [Abstract]        
Net rentable square feet of acquisition (in sqft) | ft² 168      
Percentage of equity interest acquired in affiliate (in hundredths) 77.20%      
Fair value of debt assumed from the acquisition $ 19,300      
Orlando, FL Office Property Acquisition (12/2014) [Member]        
Acquisitions [Abstract]        
Net rentable square feet of acquisition (in sqft) | ft²   246    
Acquisition purchase price   $ 67,400    
Richmond, VA Office Property Acquisition (12/2014) [Member]        
Acquisitions [Abstract]        
Net rentable square feet of acquisition (in sqft) | ft²   66    
Percentage of equity interest acquired in affiliate (in hundredths)   50.00%    
Acquisition purchase price   $ 4,200    
Nashville, TN Land Acquisition (12/2014) [Member]        
Acquisitions [Abstract]        
Acquisition purchase price   15,800    
Asset acquisition, contingent consideration liability   $ 3,300    
Raleigh, NC Office Property Acquisition (9/2014) [Member]        
Acquisitions [Abstract]        
Net rentable square feet of acquisition (in sqft) | ft²   374    
Acquisition purchase price   $ 83,800    
Atlanta, GA Office Properties Acquisition (9/2013) [Member]        
Acquisitions [Abstract]        
Number of office properties acquired | property     2  
Net rentable square feet of acquisition (in sqft) | ft²     505  
Percentage of equity interest acquired in affiliate (in hundredths)     57.00%  
Acquisition purchase price     $ 44,500  
Fair value of debt assumed from the acquisition     $ 37,600  
Effective interest rate of secured debt assumed from the acquisition (in hundredths)     3.34%  
Nashville, TN Office Property Acquisition (9/2013) [Member]        
Acquisitions [Abstract]        
Net rentable square feet of acquisition (in sqft) | ft²     520  
Acquisition purchase price     $ 150,100  
Orlando, FL Office Properties Acquisition (9/2013) [Member]        
Acquisitions [Abstract]        
Number of office properties acquired | property     5  
Net rentable square feet of acquisition (in sqft) | ft²     1,300  
Percentage of equity interest acquired in affiliate (in hundredths)     60.00%  
Purchase price of acquisition of unconsolidated affiliate     $ 112,800  
Percentage of equity interest in joint venture, previously held (in hundredths)     40.00%  
Fair value of assets recorded from the acquisition     $ 188,000  
Fair value of debt assumed from the acquisition     $ 127,900  
Effective interest rate of secured debt assumed from the acquisition (in hundredths)     3.11%  
Previously held equity interest remeasured at fair value     $ 75,200  
Gain on acquisition of controlling interest in unconsolidated affiliate     $ 7,500  
Atlanta, GA Office Property Acquisition (6/2013) [Member]        
Acquisitions [Abstract]        
Net rentable square feet of acquisition (in sqft) | ft²     553  
Acquisition purchase price     $ 140,100  
Greensboro, NC Office Properties Acquisition (3/2013) [Member]        
Acquisitions [Abstract]        
Number of office properties acquired | property     2  
Net rentable square feet of acquisition (in sqft) | ft²     195  
Acquisition purchase price     $ 30,800  
Tampa, FL Office Properties Acquisition (3/2013) [Member]        
Acquisitions [Abstract]        
Number of office properties acquired | property     2  
Net rentable square feet of acquisition (in sqft) | ft²     372  
Acquisition purchase price     $ 52,500  
Memphis, TN Development Land Acquisition (3/2013) [Member]        
Acquisitions [Abstract]        
Acquisition purchase price     $ 4,800  
2015 Dispositions [Member]        
Dispositions [Abstract]        
Number of buildings sold | property 3      
Purchase price of real estate $ 27,800      
Gains/(losses) on disposition of property 9,200      
Income tax expense netted against gain $ 500      
2014 Dispositions [Member]        
Dispositions [Abstract]        
Number of buildings sold | property   33    
Purchase price of real estate   $ 187,300    
Closing credits excluded for unfunded building and/or tenant improvements   8,600    
Closing credits excluded for free rent   2,900    
Gains/(losses) on disposition of property   44,400    
2013 Dispositions [Member]        
Dispositions [Abstract]        
Number of buildings sold | property     47  
Purchase price of real estate     $ 260,500  
Closing credits for unfunded tenant improvements     3,600  
Closing credits included for free rent     2,000  
Gains/(losses) on disposition of discontinued operations     62,300  
Gains/(losses) on disposition of property     1,500  
Additional purchase price consideration       $ 1,500
Greensboro, NC Office Property Impairment (6/2014) [Member]        
Impairments [Abstract]        
Impairments of real estate assets   $ 600    
Winston-Salem, NC Office Properties (6/2013) [Member]        
Impairments [Abstract]        
Impairments of real estate assets     $ 1,100  
Number of impaired properties | property     4  
Atlanta, GA Industrial Properties (3/2013) [Member]        
Impairments [Abstract]        
Impairments of real estate assets     $ 1,100  
Number of impaired properties | property     7  
v3.3.1.900
Real Estate Assets Real Estate Assets Pro Forma (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Business Acquisition, Pro Forma Information [Abstract]      
Pro forma, assumption date of acquisition Jan. 01, 2014   Jan. 01, 2012
Pro Forma 2015 Acquisitions [Member]      
Business Combination, Purchase Price Allocation [Abstract]      
Real estate assets $ 275,639    
Acquisition-related intangible assets (in deferred financing and leasing costs) 23,722    
Acquisition-related below market lease liabilities (in accounts payable, accrued expenses and other liabilities) (9,076)    
Total allocation 290,285    
Business Acquisition, Pro Forma Information [Abstract]      
Pro forma revenues 626,067 $ 584,650  
Pro forma net income 103,485 113,284  
Pro forma net income available to common stockholders $ 96,797 $ 105,769  
Pro forma earnings per share - basic $ 1.03 $ 1.17  
Pro forma earnings per share - diluted $ 1.02 $ 1.17  
Revenues recorded due to acquisitions $ 7,300    
Net income/(loss) recorded due to acquisitions $ (1,200)    
Pro Forma 2013 Acquisitions [Member]      
Business Combination, Purchase Price Allocation [Abstract]      
Real estate assets     $ 445,396
Acquisition-related intangible assets (in deferred financing and leasing costs)     50,595
Mortgages and notes payable     (127,891)
Acquisition-related below market lease liabilities (in accounts payable, accrued expenses and other liabilities)     (17,818)
Total allocation     350,282
Business Acquisition, Pro Forma Information [Abstract]      
Pro forma revenues     538,890
Pro forma net income     121,754
Pro forma net income available to common stockholders     $ 113,606
Pro forma earnings per share - basic     $ 1.33
Pro forma earnings per share - diluted     $ 1.33
Revenues recorded due to acquisitions     $ 25,000
Net income/(loss) recorded due to acquisitions     $ (200)
v3.3.1.900
Mortgages and Notes Receivable (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Dec. 31, 2010
transactions
Dec. 31, 2012
USD ($)
Mortgages and Notes Receivable, Net [Abstract]          
Mortgages and notes receivable, net $ 2,096 $ 13,116      
Repayments of mortgages and notes receivable 9,381 17,239 $ 405    
Seller Financing [Member]          
Mortgages and Notes Receivable, Net [Abstract]          
Number of transactions with seller financing | transactions       2  
Repayments of mortgages and notes receivable   16,500      
Deferred gain on sale of real estate   $ 400      
Mortgage Receivable [Member]          
Mortgages and Notes Receivable, Net [Abstract]          
Repayments of mortgages and notes receivable $ 9,900        
Mortgages and notes receivable, gross         $ 8,600
Additional loan commitment to third party         $ 8,400
v3.3.1.900
Investments In and Advances To Affiliates (Details)
 12 Months Ended
Dec. 31, 2015
USD ($)
property
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
property
Dec. 31, 2012
USD ($)
Dec. 31, 2011
USD ($)
a
properties
Schedule of Equity Method Investments [Line Items]          
Percentage of equity interest in joint ventures, maximum 50.00%        
Assets [Abstract]          
Real estate assets, net $ 163,852,000 $ 239,142,000      
All other assets, net 53,511,000 61,290,000      
Total Assets 217,363,000 300,432,000      
Liabilities and Partners' or Shareholders' Equity [Abstract]          
Mortgages and notes payable [1] 141,580,000 191,587,000      
All other liabilities 6,547,000 11,967,000      
Partners' or shareholders' equity 69,236,000 96,878,000      
Total Liabilities and Partners' or Shareholders' Equity 217,363,000 300,432,000      
Our share of historical partners' or shareholders' equity 21,022,000 30,784,000      
Advances to unconsolidated affiliate 448,000 20,864,000      
Difference between cost of investments and the net book value of underlying net assets (794,000) (963,000)      
Carrying value of investments in and advances to unconsolidated affiliates 20,676,000 50,685,000      
Our share of unconsolidated non-recourse mortgage debt 49,242,000 [1] 60,972,000      
Scheduled future principal payments [Abstract]          
2016 4,407,000        
2017 20,817,000        
2018 19,580,000        
2019 563,000        
2020 562,000        
Thereafter 3,313,000        
Total scheduled future principal payments 49,242,000 [1] 60,972,000      
Income Statement [Abstract]          
Rental and other revenues 48,118,000 50,514,000 $ 82,168,000    
Expenses:          
Rental property and other expenses 22,721,000 25,159,000 41,284,000    
Depreciation and amortization 12,257,000 13,310,000 20,928,000    
Impairments of real estate assets 0 0 20,077,000    
Interest expense 7,196,000 8,847,000 14,994,000    
Total expenses 42,174,000 47,316,000 97,283,000    
Income/(loss) before disposition of property 5,944,000 3,198,000 (15,115,000)    
Gains on disposition of property 18,181,000 2,998,000 20,501,000    
Net income 24,125,000 6,196,000 5,386,000    
Net gain on disposition of property 18,181,000 2,998,000 20,501,000    
Impairments of real estate assets 0 0 20,077,000    
Development, management and leasing fees revenue 1,400,000 1,200,000 2,900,000    
Receivables from management and leasing fees $ 100,000 500,000      
Consolidated Affiliates:          
Joint venture partner's interest in unconsolidated affiliate (in hundredths) 80.00%        
Gain recorded on disposition of investment in unconsolidated affiliate $ 4,155,000 $ 0 $ 0    
Concourse Center Associates, LLC Joint Venture [Member]          
Schedule of Equity Method Investments [Line Items]          
Percentage of equity interest in joint ventures, maximum 50.00%        
Plaza Colonnade, LLC Joint Venture [Member]          
Schedule of Equity Method Investments [Line Items]          
Percentage of equity interest in joint ventures, maximum 50.00%        
Lofts at Weston, LLC Joint Venture [Member]          
Schedule of Equity Method Investments [Line Items]          
Percentage of equity interest in joint ventures, maximum     50.00%    
Expenses:          
Gains on disposition of property     $ 12,200,000   $ 300,000
Gross proceeds received from disposition of property     38,300,000    
Contribution of land (in acres) | a         15.0
Contribution of property to unconsolidated affiliate         $ 2,400,000
Payments to acquire interest in joint venture by partner         1,200,000
Distribution by joint venture for land contribution     9,400,000   $ 1,200,000
Residential units (in units) | properties         215
Total cost to construct residential units         $ 25,900,000
Income tax expense netted against gain on equity in earnings of unconsolidated affiliates     1,700,000    
Net gain on disposition of property     12,200,000   $ 300,000
Our proportionate share of gain on disposition of property     3,200,000    
Board of Trade Investment Company Joint Venture [Member]          
Schedule of Equity Method Investments [Line Items]          
Percentage of equity interest in joint ventures, maximum   49.00%      
Expenses:          
Gains on disposition of property   $ 1,900,000      
Gross proceeds received from disposition of property   8,300,000      
Net gain on disposition of property   1,900,000      
Our proportionate share of impairment of assets in discontinued operations   400,000      
Aggregate distributions received   4,700,000      
Highwoods DLF 97/26 DLF 99/32, LP Joint Venture [Member]          
Schedule of Equity Method Investments [Line Items]          
Percentage of equity interest in joint ventures, maximum 42.90%        
Expenses:          
Gains on disposition of property $ 2,100,000   100,000    
Gross proceeds received from disposition of property 7,000,000   $ 10,100,000    
Number of buildings sold | property     2    
Closing credits included for free rent     $ 300,000    
Net gain on disposition of property 2,100,000   100,000    
Our proportionate share of gain on disposition of property 1,100,000   $ 400,000    
Highwoods KC Glenridge Office, LLC Joint Venture [Member]          
Expenses:          
Gains on disposition of property 2,400,000        
Gross proceeds received from disposition of property $ 24,500,000        
Joint venture principal amount of debt   $ 14,900,000.0      
Current fixed interest rate (in hundredths)   4.84%      
Number of buildings sold | property 2        
Closing credits for unfunded tenant improvements $ 300,000        
Net gain on disposition of property 2,400,000        
Our proportionate share of gain on disposition of property $ 900,000        
HIW-KC Orlando, LLC Joint Venture [Member]          
Expenses:          
Percentage of equity interest acquired in unconsolidated affiliate (in hundredths)     60.00%    
Kessinger Hunter, LLC Joint Venture [Member]          
Schedule of Equity Method Investments [Line Items]          
Percentage of equity interest in joint ventures, maximum 26.50%        
Expenses:          
Amount of related party transaction $ 300,000 $ 600,000 $ 200,000    
Highwoods DLF Forum, LLC Joint Venture [Member]          
Schedule of Equity Method Investments [Line Items]          
Percentage of equity interest in joint ventures, maximum 25.00%        
Expenses:          
Joint venture principal amount of debt     $ 71,700,000    
Term of debt instrument (in years)     5 years    
Floating interest rate, interest rate basis     LIBOR plus 190 basis points    
Current floating interest rate (in hundredths)     1.90%    
Scheduled maturity date     Nov. 01, 2018    
Highwoods DLF 98/29, LLC Joint Venture [Member]          
Schedule of Equity Method Investments [Line Items]          
Percentage of equity interest in joint ventures, maximum 22.80%        
Expenses:          
Impairments of real estate assets     $ 20,100,000    
Gains on disposition of property $ 13,700,000 1,000,000 100,000    
Gross proceeds received from disposition of property   13,700,000 5,900,000    
Closing credits included for free rent   400,000 100,000    
Net gain on disposition of property 13,700,000 1,000,000 100,000    
Our proportionate share of impairment of assets in discontinued operations     4,500,000    
Our proportionate share of gain on disposition of property $ 3,100,000 $ 200,000 100,000    
Impairments of real estate assets     $ 20,100,000    
4600 Madison Associates, LLC Joint Venture [Member]          
Schedule of Equity Method Investments [Line Items]          
Percentage of equity interest in joint ventures, maximum 12.50%        
Highwoods-Markel Associates, LLC Joint Venture [Member]          
Consolidated Affiliates:          
Percentage of equity interest in consolidated affiliates 50.00%        
Fair value of noncontrolling interests in consolidated affiliate $ 19,400,000        
SF-Harborview Plaza, LP Joint Venture [Member]          
Expenses:          
Gross proceeds received from disposition of property $ 6,900,000        
Scheduled maturity date       Sep. 30, 2015  
Consolidated Affiliates:          
Percentage of equity interest in consolidated affiliates 20.00%        
Gain recorded on disposition of investment in unconsolidated affiliate $ 4,200,000        
Advance to consolidated affiliate $ 20,800,000     $ 20,800,000  
Term of debt instrument (in years)       3 years  
[1] Our share of scheduled future principal payments, including amortization, due on mortgages and notes payable at December 31, 2015 is as follows:2016$4,407201720,817201819,58020195632020562Thereafter3,313 $49,242 All of this joint venture debt is non-recourse to us except in the case of customary exceptions pertaining to such matters as misuse of funds, environmental conditions, material misrepresentations and voluntary or uncontested involuntary bankruptcy events.
v3.3.1.900
Intangible Assets and Below Market Lease Liabilities (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Intangible assets and below market lease liabilities, net [Abstract]      
Deferred financing and leasing costs, accumulated amortization $ (123,723) $ (108,122)  
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets 241,663 222,448  
Acquired intangible assets (amortized in rental and other revenue) 3,051    
Acquired intangible assets (amortized in depreciation and amortization) 35,534    
Assumed below market lease liabilities (amortized in rental and other revenue) (10,733)    
Deferred Financing Costs [Member]      
Intangible assets and below market lease liabilities, net [Abstract]      
Deferred financing and leasing costs, gross 18,449 19,478  
Deferred financing and leasing costs, accumulated amortization (8,551) (7,953)  
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets 9,898 11,525  
Amortization of intangible assets and below market lease liabilities      
Amortization of intangible assets 3,645 3,082 $ 3,802
Deferred Leasing Costs [Member]      
Intangible assets and below market lease liabilities, net [Abstract]      
Deferred financing and leasing costs, gross 346,937 311,092  
Deferred financing and leasing costs, accumulated amortization (115,172) (100,169)  
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets 231,765 210,923  
Deferred Leasing Costs and Acquisition-Related Intangible Assets [Member]      
Intangible assets and below market lease liabilities, net [Abstract]      
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets 209,063    
Amortization of intangible assets and below market lease liabilities      
Amortization of intangible assets 43,332 38,144 35,941
Lease Incentives [Member]      
Intangible assets and below market lease liabilities, net [Abstract]      
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets 6,920    
Amortization of intangible assets and below market lease liabilities      
Amortization of intangible assets 1,493 1,419 1,361
Acquisition-Related Intangible Assets (in Rental and Other Revenue) [Member]      
Intangible assets and below market lease liabilities, net [Abstract]      
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets 13,045    
Amortization of intangible assets and below market lease liabilities      
Amortization of intangible assets 5,062 4,549 3,676
Acquisition-Related Intangible Assets (in Rental Property and Other Expenses) [Member]      
Intangible assets and below market lease liabilities, net [Abstract]      
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets 2,737    
Amortization of intangible assets and below market lease liabilities      
Amortization of intangible assets 557 557 556
Acquisition-Related Below Market Lease Liabilities [Member]      
Intangible assets and below market lease liabilities, net [Abstract]      
Acquisition-related below market lease liabilities, gross 63,830 55,783  
Acquisition-related below market lease liabilities, accumulated amortization (17,927) (13,548)  
Acquisition-related below market lease liabilities, net 45,903 42,235  
Amortization of intangible assets and below market lease liabilities      
Amortization of acquisition-related below market lease liabilities $ (7,065) $ (6,129) $ (5,316)
v3.3.1.900
Intangible Assets and Below Market Lease Liabilities - Scheduled Future Amortization (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Scheduled future amortization of intangible assets [Abstract]    
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets $ 241,663 $ 222,448
Deferred Financing Costs [Member]    
Scheduled future amortization of intangible assets [Abstract]    
2016 3,185  
2017 2,693  
2018 1,530  
2019 1,116  
2020 804  
Thereafter 570  
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets $ 9,898 11,525
Weighted average remaining amortization periods for intangible assets and liabilities [Abstract]    
Intangible assets, weighted average useful life (in years) 3 years 10 months 24 days  
Deferred Leasing Costs and Acquisition-Related Intangible Assets [Member]    
Scheduled future amortization of intangible assets [Abstract]    
2016 $ 45,903  
2017 38,580  
2018 31,827  
2019 26,161  
2020 21,584  
Thereafter 45,008  
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets $ 209,063  
Weighted average remaining amortization periods for intangible assets and liabilities [Abstract]    
Intangible assets, weighted average useful life (in years) 6 years 7 months 6 days  
Lease Incentives [Member]    
Scheduled future amortization of intangible assets [Abstract]    
2016 $ 1,254  
2017 1,175  
2018 1,076  
2019 880  
2020 652  
Thereafter 1,883  
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets $ 6,920  
Weighted average remaining amortization periods for intangible assets and liabilities [Abstract]    
Intangible assets, weighted average useful life (in years) 7 years 4 months 24 days  
Acquisition-Related Intangible Assets (in Rental and Other Revenue) [Member]    
Scheduled future amortization of intangible assets [Abstract]    
2016 $ 3,808  
2017 2,671  
2018 1,709  
2019 1,306  
2020 989  
Thereafter 2,562  
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets $ 13,045  
Weighted average remaining amortization periods for intangible assets and liabilities [Abstract]    
Intangible assets, weighted average useful life (in years) 6 years 1 month 6 days  
Acquired intangible assets, weighted average useful life (in years) 5 years  
Acquisition-Related Intangible Assets (amortized in Depreciation and Amortization) [Member]    
Weighted average remaining amortization periods for intangible assets and liabilities [Abstract]    
Acquired intangible assets, weighted average useful life (in years) 5 years 8 months 12 days  
Acquisition-Related Intangible Assets (in Rental Property and Other Expenses) [Member]    
Scheduled future amortization of intangible assets [Abstract]    
2016 $ 553  
2017 553  
2018 553  
2019 553  
2020 525  
Thereafter 0  
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets $ 2,737  
Weighted average remaining amortization periods for intangible assets and liabilities [Abstract]    
Intangible assets, weighted average useful life (in years) 5 years  
Acquisition-Related Below Market Lease Liabilities [Member]    
Scheduled future amortization of below market lease liabilites [Abstract]    
2016 $ (6,969)  
2017 (6,626)  
2018 (6,231)  
2019 (5,739)  
2020 (5,410)  
Thereafter (14,928)  
Total scheduled future amortization of below market lease liabilities $ (45,903) $ (42,235)
Weighted average remaining amortization periods for intangible assets and liabilities [Abstract]    
Below market lease liabilities, weighted average useful life (in years) 7 years 10 months 24 days  
Assumed finite-lived below market lease liabilities, weighted average useful life (in years) 9 years 7 months 6 days  
v3.3.1.900
Mortgages and Notes Payable (Details)
 12 Months Ended
Dec. 31, 2015
USD ($)
extensions
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
loans
Jan. 29, 2016
USD ($)
Debt Instrument [Line Items]        
Mortgages and notes payable $ 2,499,614,000 $ 2,071,389,000    
Scheduled future principal payments [Abstract]        
2016 396,090,000      
2017 507,345,000      
2018 498,305,000      
2019 199,305,000      
2020 349,305,000      
Thereafter 549,264,000      
Total scheduled future principal payments 2,499,614,000 2,071,389,000    
Gross book value of unencumbered real estate assets 293,000,000      
Annual repayments through principal amortization 4,900,000      
Gains/(losses) on debt extinguishment $ (243,000) (308,000) $ (199,000)  
Lender covenant compliance to accelerate outstanding borrowings 51.00%      
Holders covenant compliance of bonds 25.00%      
Uncured covenant compliance default period 60 days      
Amount of funded capital expenditures reserve $ 16,769,000 14,595,000    
Capitalized Interest [Abstract]        
Capitalized Interest 6,900,000 5,300,000 2,700,000  
5.17% (6.43% effective rate) Mortage Loan due 2015 [Member]        
Scheduled future principal payments [Abstract]        
Early repayment of debt $ 39,400,000      
Scheduled maturity date Nov. 01, 2015      
Interest rate, basis spread 6.43%      
6.88% Mortgage Loan due 2016 [Member]        
Scheduled future principal payments [Abstract]        
Early repayment of debt $ 106,000,000      
Scheduled maturity date Jan. 01, 2016      
Interest rate, basis spread 6.88%      
6.11% (5.36% effective rate) Mortgage Loan due 2017 (Note A) [Member]        
Scheduled future principal payments [Abstract]        
Principal amount of debt $ 18,000,000      
Scheduled maturity date Jul. 06, 2017      
Interest rate, basis spread 5.36%      
Percentage of equity interest acquired in affiliate (in hundredths) 77.20%      
Amount of funded capital expenditures reserve $ 3,000,000      
Mortgage prepayment date Oct. 06, 2016      
Fair value of debt assumed from the acquisition $ 18,300,000      
6.11% (8.60% effective rate) Mortgage Loan due 2017 (Note B) [Member]        
Scheduled future principal payments [Abstract]        
Principal amount of debt $ 10,200,000.0      
Scheduled maturity date Jul. 06, 2017      
Interest rate, basis spread 8.60%      
Mortgage prepayment date Oct. 06, 2016      
Percentage of excess funds after waterfall payments (in hundredths) 50.00%      
Stated return on funds deposited in escrow (in hundredths) 10.00%      
Fair value of debt assumed from the acquisition $ 1,000,000      
8.15% (7.65% effective rate) Mortgage Loans due 2016 [Member]        
Scheduled future principal payments [Abstract]        
Early repayment of debt $ 5,900,000      
Scheduled maturity date Feb. 01, 2016      
Interest rate, basis spread 7.65%      
3.20% (3.363% effective rate) Notes due 2021 [Member]        
Scheduled future principal payments [Abstract]        
Principal amount of debt   $ 300,000,000    
Scheduled maturity date   Jun. 15, 2021    
Interest rate, basis spread   3.20%    
Current interest rate (in hundredths)   3.363%    
Purchase price of debt (in hundredths)   98.983%    
Original issuance discount   $ 3,100,000    
Deferred financing fees   2,400,000    
Variable Rate Term Loan (2) due 2019 [Member]        
Scheduled future principal payments [Abstract]        
Principal amount of debt $ 225,000,000      
Term of debt instrument (in years) 7 years      
Interest rate basis LIBOR plus 175 basis points      
Interest rate, basis spread 1.75%      
Bridge Credit Facility due 2016 [Member]        
Scheduled future principal payments [Abstract]        
Maximum borrowing capacity on revolving credit facility $ 350,000,000      
Maturity date on revolving credit facility Mar. 28, 2016      
Term of optional extensions 6 months      
Interest rate LIBOR plus 110 basis points      
Amount outstanding on revolving credit facility $ 350,000,000      
Term of debt instrument (in years) 6 months      
Interest rate, basis spread 1.10%      
Revolving Credit Facility due 2018 [Member]        
Scheduled future principal payments [Abstract]        
Maximum borrowing capacity on revolving credit facility $ 475,000,000      
Maturity date on revolving credit facility Jan. 01, 2018      
Additional borrowing capacity on revolving credit facility $ 75,000,000      
Number of additional maturity extensions | extensions 2      
Term of optional extensions 6 months      
Interest rate LIBOR plus 110 basis points      
Annual facility fee (in hundredths) 0.20%      
Amount outstanding on revolving credit facility $ 299,000,000      
Outstanding letters of credit on revolving credit facility 200,000      
Unused borrowing capacity on revolving credit facility $ 175,800,000      
Interest rate, basis spread 1.10%      
Variable Rate Term Loan due 2020 [Member]        
Scheduled future principal payments [Abstract]        
Principal amount of debt $ 350,000,000      
Scheduled maturity date Jun. 01, 2020      
Interest rate basis LIBOR plus 110 basis points      
Interest rate, basis spread 1.10%      
Deferred financing fees $ 1,300,000      
3.50% (3.34% effective rate) Mortgage Loan due 2015 [Member]        
Scheduled future principal payments [Abstract]        
Early repayment of debt   $ 36,900,000    
Scheduled maturity date   Apr. 01, 2015    
Interest rate, basis spread   3.34%    
Gains/(losses) on debt extinguishment   $ (300,000)    
5.21% (3.11% effective rate) Mortgage Loan due 2014 [Member]        
Scheduled future principal payments [Abstract]        
Early repayment of debt   $ 123,700,000    
Scheduled maturity date   Jul. 01, 2014    
Interest rate, basis spread   3.11%    
5.94% (3.32% effective rate) Mortgage Loan due 2014 [Member]        
Scheduled future principal payments [Abstract]        
Early repayment of debt   $ 7,200,000    
Scheduled maturity date   Aug. 01, 2014    
Interest rate, basis spread   3.32%    
Gains/(losses) on debt extinguishment   $ 100,000    
5.45% (5.12% effective rate) Mortgage Loan due 2014 [Member]        
Scheduled future principal payments [Abstract]        
Principal amount of debt     $ 67,500,000  
Scheduled maturity date     Jan. 01, 2014  
Interest rate, basis spread     5.12%  
5.68% and 6.48% Mortgage Loans Due 2013 [Member]        
Scheduled future principal payments [Abstract]        
Early repayment of debt     $ 114,700,000  
Number of debt instruments repaid | loans     2  
Scheduled maturity date     Dec. 01, 2013  
Interest rate, basis spread     5.75%  
Gains/(losses) on debt extinguishment     $ (100,000)  
Consolidated Affiliate 5.74% to 5.89% Mortgage Loans Due 2014 [Member]        
Scheduled future principal payments [Abstract]        
Early repayment of debt     $ 32,300,000  
Number of debt instruments repaid | loans     4  
Scheduled maturity date     Jan. 01, 2014  
Interest rate, basis spread     5.79%  
Variable Rate Term Loan due 2016 [Member]        
Scheduled future principal payments [Abstract]        
Early repayment of debt     $ 35,000,000.0  
Principal amount of debt     $ 200,000,000  
Scheduled maturity date     Feb. 01, 2016  
Gains/(losses) on debt extinguishment     $ (200,000)  
Secured indebtedness [Member]        
Debt Instrument [Line Items]        
Mortgages and notes payable [1] 175,281,000 312,868,000    
Scheduled future principal payments [Abstract]        
Total scheduled future principal payments [1] 175,281,000 312,868,000    
Aggregate undepreciated book value of secured real estate assets 314,200,000      
Secured indebtedness [Member] | 5.17% (6.43% effective rate) Mortage Loan due 2015 [Member]        
Debt Instrument [Line Items]        
Mortgages and notes payable [2] 0 39,324,000    
Scheduled future principal payments [Abstract]        
Total scheduled future principal payments [2] 0 39,324,000    
Unamortized discount   400,000    
Secured indebtedness [Member] | 6.88% Mortgage Loan due 2016 [Member]        
Debt Instrument [Line Items]        
Mortgages and notes payable [3] 0 107,556,000    
Scheduled future principal payments [Abstract]        
Total scheduled future principal payments [3] 0 107,556,000    
Secured indebtedness [Member] | 7.50% Mortgage Loan due 2016 [Member]        
Debt Instrument [Line Items]        
Mortgages and notes payable 43,852,000 44,501,000    
Scheduled future principal payments [Abstract]        
Total scheduled future principal payments 43,852,000 44,501,000    
Secured indebtedness [Member] | 5.10%(4.22% effective rate) Mortgage Loan due 2017 [Member]        
Debt Instrument [Line Items]        
Mortgages and notes payable [4] 112,230,000 115,229,000    
Scheduled future principal payments [Abstract]        
Total scheduled future principal payments [4] 112,230,000 115,229,000    
Unamortized premium 1,700,000 2,700,000    
Secured indebtedness [Member] | 6.11% (5.36% effective rate) Mortgage Loan due 2017 (Note A) [Member]        
Debt Instrument [Line Items]        
Mortgages and notes payable [5] 19,199,000 0    
Scheduled future principal payments [Abstract]        
Total scheduled future principal payments [5] 19,199,000 0    
Unamortized premium 200,000      
Secured indebtedness [Member] | 8.15% (7.65% effective rate) Mortgage Loans due 2016 [Member]        
Debt Instrument [Line Items]        
Mortgages and notes payable [6] 0 6,258,000    
Scheduled future principal payments [Abstract]        
Total scheduled future principal payments [6] 0 6,258,000    
Unamortized premium   100,000    
Unsecured indebtedness [Member]        
Debt Instrument [Line Items]        
Mortgages and notes payable 2,324,333,000 1,758,521,000    
Scheduled future principal payments [Abstract]        
Total scheduled future principal payments 2,324,333,000 1,758,521,000    
Unsecured indebtedness [Member] | 5.85% (5.88% effective rate) Notes due 2017 [Member]        
Debt Instrument [Line Items]        
Mortgages and notes payable [7] 379,544,000 379,427,000    
Scheduled future principal payments [Abstract]        
Total scheduled future principal payments [7] 379,544,000 379,427,000    
Unamortized discount 100,000 300,000    
Unsecured indebtedness [Member] | 7.50% Notes due 2018 [Member]        
Debt Instrument [Line Items]        
Mortgages and notes payable 200,000,000 200,000,000    
Scheduled future principal payments [Abstract]        
Total scheduled future principal payments 200,000,000 200,000,000    
Unsecured indebtedness [Member] | 3.20% (3.363% effective rate) Notes due 2021 [Member]        
Debt Instrument [Line Items]        
Mortgages and notes payable [8] 297,639,000 297,207,000    
Scheduled future principal payments [Abstract]        
Total scheduled future principal payments [8] 297,639,000 297,207,000    
Unamortized discount 2,400,000 2,800,000    
Unsecured indebtedness [Member] | 3.625% (3.752% effective rate) Notes due 2023 [Member]        
Debt Instrument [Line Items]        
Mortgages and notes payable [9] 248,150,000 247,887,000    
Scheduled future principal payments [Abstract]        
Total scheduled future principal payments [9] 248,150,000 247,887,000    
Unamortized discount 1,900,000 2,100,000    
Unsecured indebtedness [Member] | Variable Rate Term Loan (1) due 2019 [Member]        
Debt Instrument [Line Items]        
Mortgages and notes payable [10] 200,000,000 200,000,000    
Scheduled future principal payments [Abstract]        
Total scheduled future principal payments [10] $ 200,000,000 200,000,000    
Current interest rate (in hundredths) 1.44%      
Unsecured indebtedness [Member] | Variable Rate Term Loan (2) due 2019 [Member]        
Debt Instrument [Line Items]        
Mortgages and notes payable [11]   225,000,000    
Scheduled future principal payments [Abstract]        
Total scheduled future principal payments [11]   225,000,000    
Unsecured indebtedness [Member] | Bridge Credit Facility due 2016 [Member]        
Debt Instrument [Line Items]        
Mortgages and notes payable [12] $ 350,000,000 0    
Scheduled future principal payments [Abstract]        
Total scheduled future principal payments [12] $ 350,000,000 0    
Current interest rate (in hundredths) 1.49%      
Unsecured indebtedness [Member] | Revolving Credit Facility due 2018 [Member]        
Debt Instrument [Line Items]        
Mortgages and notes payable [13] $ 299,000,000 209,000,000    
Scheduled future principal payments [Abstract]        
Total scheduled future principal payments [13] $ 299,000,000 $ 209,000,000    
Current interest rate (in hundredths) 1.45%      
Unsecured indebtedness [Member] | Variable Rate Term Loan due 2020 [Member]        
Debt Instrument [Line Items]        
Mortgages and notes payable [11] $ 350,000,000      
Scheduled future principal payments [Abstract]        
Total scheduled future principal payments [11] $ 350,000,000      
Current interest rate (in hundredths) 1.41%      
Subsequent Event [Member] | Revolving Credit Facility due 2018 [Member]        
Scheduled future principal payments [Abstract]        
Amount outstanding on revolving credit facility       $ 313,700,000
Outstanding letters of credit on revolving credit facility       200,000
Unused borrowing capacity on revolving credit facility       $ 161,100,000
[1] Our secured mortgage loans were collateralized by real estate assets with an aggregate undepreciated book value of $314.2 million at December 31, 2015. Our fixed rate mortgage loans generally are either locked out to prepayment for all or a portion of their term or are prepayable subject to certain conditions including prepayment penalties.
[2] Net of unamortized fair market value discount of $0.4 million as of December 31, 2014. This debt was repaid in 2015.
[3] This debt was repaid in 2015.
[4] Net of unamortized fair market value premium of $1.7 million and $2.7 million as of December 31, 2015 and 2014, respectively.
[5] Net of unamortized fair market value premium of $0.2 million as of December 31, 2015.
[6] Net of unamortized fair market value premium of $0.1 million as of December 31, 2014. This debt was repaid in 2015.
[7] Net of unamortized original issuance discount of $0.1 million and $0.3 million as of December 31, 2015 and 2014, respectively.
[8] Net of unamortized original issuance discount of $2.4 million and $2.8 million as of December 31, 2015 and 2014, respectively.
[9] Net of unamortized original issuance discount of $1.9 million and $2.1 million as of December 31, 2015 and 2014, respectively.
[10] The interest rate is 1.44% at December 31, 2015.
[11] As more fully described in Note 7, we entered into floating-to-fixed interest rate swaps that effectively fix LIBOR for the original $225.0 million portion of this loan. Accordingly, the equivalent fixed rate of this amount is 2.78%. The interest rate on the remaining $125.0 million is 1.41% at December 31, 2015.
[12] The interest rate is 1.49% at December 31, 2015.
[13] The interest rate is 1.45% at December 31, 2015.
v3.3.1.900
Derivative Financial Instruments (Details)
 12 Months Ended
Dec. 31, 2015
USD ($)
swaps
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]      
Number of derivative instruments obtained | swaps 6    
Derivative maturity date Jan. 01, 2019    
Amount of borrowings outstanding, subject to swaps $ 225,000,000    
Weighted average interest rate under derivative instruments (in hundredths) 1.678%    
Cross-default minimum threshold $ 10,000,000    
Expected increase to interest expense 2,300,000    
Derivatives designated as cash flow hedges in accounts payable, accrued expenses and other liabilities [Abstract]      
Interest rate swaps 3,073,000 $ 2,412,000  
Amount of unrealized gains/(losses) recognized in AOCL on derivatives (effective portion) [Abstract]      
Interest rate swaps (4,040,000) (5,662,000) $ 5,778,000
Amount of losses reclassified out of AOCL into contractual interest expense (effective portion) [Abstract]      
Interest rate swaps $ 3,696,000 $ 3,777,000 $ 3,370,000
v3.3.1.900
Financing Arrangement (Details) - Tax Increment Financing Obligation Bond [Member] - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Financing Obligation [Line Items]    
Term of period for financing obligation payments 20 years  
Expiration date for financing obligation Oct. 31, 2019  
Discount rate of financing obligation 6.93%  
Acquisition date of financing obligation Dec. 01, 2007  
Purchase price of real estate $ 660.0  
Financing obligation $ 7.4 $ 9.0
v3.3.1.900
Commitments and Contingencies (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
USD ($)
ft²
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Operating ground leases [Abstract]      
Rental property expense $ 3,400 $ 3,400 $ 2,800
Operating ground leases, scheduled future minimum payments [Abstract]      
Operating leases, future minimum payments, 2016 3,033    
Operating leases, future minimum payments, 2017 3,067    
Operating leases, future minimum payments, 2018 3,103    
Operating leases, future minimum payments, 2019 3,140    
Operating leases, future minimum payments, 2020 3,179    
Operating leases, future minimum payments, thereafter 109,157    
Operating leases, total future minimum payments due 124,679    
Lease and Contractual Commitments [Abstract]      
Lease and contractual commitments 340,000    
Accrued amount of lease and contractual commitments 55,900    
Contingent Consideration [Abstract]      
Asset acquisition, contingent consideration liability $ 900 3,300 $ 0
Other Commitments [Abstract]      
Rentable square feet of commercial real estate (in square feet) | ft² 32,486,000    
Rentable square feet of commercial real estate under development (in square feet) | ft² 1,454,200    
Asset Acquisition Contingent Consideration [Member]      
Contingent Consideration [Abstract]      
Acquisition purchase price $ 5,200 15,800  
Asset acquisition, contingent consideration liability $ 900 $ 3,300  
Contingent consideration expiration date Jun. 30, 2019 Mar. 31, 2020  
Accrued Severance Costs [Member]      
Other Commitments [Abstract]      
Expected severance costs to be incurred $ 1,600    
Total Severance Costs [Member]      
Other Commitments [Abstract]      
Expected severance costs to be incurred $ 2,600    
Office Property [Member]      
Other Commitments [Abstract]      
Rentable square feet of commercial real estate (in square feet) | ft² 468,000    
Office Property [Member] | Closure of Division Office [Member]      
Other Commitments [Abstract]      
Rentable square feet of commercial real estate (in square feet) | ft² 468,000    
Retail Property [Member]      
Other Commitments [Abstract]      
Rentable square feet of commercial real estate (in square feet) | ft² 776,000    
Rentable square feet of commercial real estate under development (in square feet) | ft² 28,000    
Retail Property [Member] | Closure of Division Office [Member]      
Other Commitments [Abstract]      
Rentable square feet of commercial real estate (in square feet) | ft² 776,000    
Rentable square feet of commercial real estate under development (in square feet) | ft² 28,000    
v3.3.1.900
Noncontrolling Interests (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Noncontrolling Interests in Consolidated Affiliates                      
Consolidated joint venture, partner's interest (in hundredths) 50.00%               50.00%    
Noncontrolling Interests in the Operating Partnership [Roll Forward]                      
Noncontrolling interests in the Operating Partnership, beginning balance       $ 130,048         $ 130,048    
Adjustment of noncontrolling interests in the Operating Partnership to fair value                 67 $ 25,275 $ 11,375
Conversions of Common Units to Common Stock                 (1,645) (162) (28,788)
Redemptions of Common Units                 0 (93) 0
Net income attributable to noncontrolling interests in the Operating Partnership $ 622 $ 918 $ 782 596 $ 729 $ 1,673 $ 742 $ 398 2,918 3,542 4,691
Distributions to noncontrolling interests in the Operating Partnership                 (4,959) (4,994) (5,667)
Noncontrolling interests in the Operating Partnership, ending balance 126,429       130,048       126,429 130,048  
Net Income Available for Common Stockholders and Transfers From Noncontrolling Interests in the Operating Partnership                      
Net income available for common stockholders 20,352 $ 29,749 $ 25,155 19,316 21,916 $ 51,708 $ 22,705 12,128 94,572 108,457 122,949
Highwoods Properties, Inc. [Member]                      
Noncontrolling Interests in the Operating Partnership [Roll Forward]                      
Noncontrolling interests in the Operating Partnership, beginning balance       $ 130,048       $ 106,480 130,048 106,480  
Adjustment of noncontrolling interests in the Operating Partnership to fair value                 67 25,275  
Conversions of Common Units to Common Stock                 (1,645) (162)  
Redemptions of Common Units                 0 (93)  
Net income attributable to noncontrolling interests in the Operating Partnership                 2,918 3,542  
Distributions to noncontrolling interests in the Operating Partnership                 (4,959) (4,994)  
Noncontrolling interests in the Operating Partnership, ending balance $ 126,429       $ 130,048       126,429 130,048 106,480
Net Income Available for Common Stockholders and Transfers From Noncontrolling Interests in the Operating Partnership                      
Net income available for common stockholders                 94,572 108,457 122,949
Increase in additional paid in capital from conversions of Common Units to Common Stock                 1,645 162 28,788
Change from net income available for common stockholders and transfers from noncontrolling interests                 $ 96,217 $ 108,619 $ 151,737
v3.3.1.900
Disclosure About Fair Value of Financial Instruments - Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Assets:        
Mortgages and notes receivable, at fair value [1] $ 2,096 $ 13,142    
Marketable securities of non-qualified deferred compensation plan (in prepaid expenses and other assets) 2,736 3,635 $ 3,996  
Tax increment financing bond (in real estate and other assets, net, held for sale) 11,197 12,447    
Total Assets 16,029 29,224    
Liabilities:        
Mortgages and notes payable, at fair value [1] 2,525,390 2,141,334    
Interest rate swaps (in accounts payable, accrued expenses and other liabilities) 3,073 2,412    
Non-qualified deferred compensation obligation (in accounts payable, accrued expenses and other liabilities) 2,736 3,635 $ 3,996 $ 3,354
Financing obligation, at fair value (in liabilities held for sale) [1] 7,402 8,623    
Total Liabilities 2,538,601 2,156,004    
Level 1 [Member]        
Assets:        
Mortgages and notes receivable, at fair value [1] 0 0    
Marketable securities of non-qualified deferred compensation plan (in prepaid expenses and other assets) 2,736 3,635    
Tax increment financing bond (in real estate and other assets, net, held for sale) 0 0    
Total Assets 2,736 3,635    
Liabilities:        
Mortgages and notes payable, at fair value [1] 0 0    
Interest rate swaps (in accounts payable, accrued expenses and other liabilities) 0 0    
Non-qualified deferred compensation obligation (in accounts payable, accrued expenses and other liabilities) 2,736 3,635    
Financing obligation, at fair value (in liabilities held for sale) [1] 0 0    
Total Liabilities 2,736 3,635    
Level 2 [Member]        
Assets:        
Mortgages and notes receivable, at fair value [1] 2,096 2,247    
Marketable securities of non-qualified deferred compensation plan (in prepaid expenses and other assets) 0 0    
Tax increment financing bond (in real estate and other assets, net, held for sale) 0 0    
Total Assets 2,096 2,247    
Liabilities:        
Mortgages and notes payable, at fair value [1] 2,525,390 2,141,334    
Interest rate swaps (in accounts payable, accrued expenses and other liabilities) 3,073 2,412    
Non-qualified deferred compensation obligation (in accounts payable, accrued expenses and other liabilities) 0 0    
Financing obligation, at fair value (in liabilities held for sale) [1] 0 0    
Total Liabilities 2,528,463 2,143,746    
Level 3 [Member]        
Assets:        
Mortgages and notes receivable, at fair value [1] 0 10,895    
Marketable securities of non-qualified deferred compensation plan (in prepaid expenses and other assets) 0 0    
Tax increment financing bond (in real estate and other assets, net, held for sale) 11,197 12,447    
Total Assets 11,197 23,342    
Liabilities:        
Mortgages and notes payable, at fair value [1] 0 0    
Interest rate swaps (in accounts payable, accrued expenses and other liabilities) 0 0    
Non-qualified deferred compensation obligation (in accounts payable, accrued expenses and other liabilities) 0 0    
Financing obligation, at fair value (in liabilities held for sale) [1] 7,402 8,623    
Total Liabilities 7,402 8,623    
Highwoods Properties, Inc. [Member]        
Assets:        
Noncontrolling Interests in the Operating Partnership 126,429 130,048    
Highwoods Properties, Inc. [Member] | Level 1 [Member]        
Assets:        
Noncontrolling Interests in the Operating Partnership 126,429 130,048    
Highwoods Properties, Inc. [Member] | Level 2 [Member]        
Assets:        
Noncontrolling Interests in the Operating Partnership 0 0    
Highwoods Properties, Inc. [Member] | Level 3 [Member]        
Assets:        
Noncontrolling Interests in the Operating Partnership $ 0 $ 0    
[1] Amounts recorded at historical cost on our Consolidated Balance Sheets at December 31, 2015 and 2014.
v3.3.1.900
Disclosure About Fair Value of Financial Instruments - Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2015
Dec. 31, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]          
Unrealized gains (in AOCL) $ 445 $ 584 $ 869    
Tax Increment Financing Bond [Member]          
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]          
Beginning balance 12,447 13,403      
Principal repayments (1,695) (1,540)      
Unrealized gains (in AOCL) 445 584      
Ending balance $ 11,197 12,447 13,403    
Maturity date Dec. 20, 2020        
Change in discount rate (in hundredths) 1.00%        
Fair value of Level 3 asset $ 12,447 $ 13,403 $ 13,403 $ 11,197 $ 12,447
Discount rate (in hundredths) 6.93% 8.40%      
Tax Increment Financing Bond [Member] | Minimum [Member]          
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]          
Impact of 100 basis points change in discount rate       300  
Tax Increment Financing Bond [Member] | Maximum [Member]          
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]          
Impact of 100 basis points change in discount rate       $ 300  
Impaired Real Estate Assets [Member]          
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]          
Discount rate (in hundredths)   10.00%      
Impaired real estate assets [Abstract]          
Fair value of Level 3 asset         $ 4,900
Capitalization rate (in hundredths)   9.50%      
v3.3.1.900
Equity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Class of Stock [Line Items]      
Net proceeds of Common Stock sold during the period $ 125,537 $ 112,624 $ 305,846
Possible future share issuance authorized under charter 103,900,000    
Number of trading days preceeding Redemption Notice Date (in days) 10 days    
Dividends, Common Stock [Abstract]      
Ordinary income $ 1.50 $ 1.31 $ 1.28
Capital gains 0.13 0.29 0.26
Return of capital 0.07 0.10 0.16
Total taxability of dividends per share $ 1.70 $ 1.70 1.70
Dividends, Preferred Stock [Abstract]      
Number of shares outstanding, Preferred Stock (in shares) 29,050 29,060  
Carrying value, Preferred Stock $ 29,050 $ 29,060  
Liquidation preference per share, Preferred Stock (in dollars per share) $ 1,000 $ 1,000  
Warrants [Abstract]      
Warrants to acquire Common Stock/Units, outstanding 15,000 15,000  
Exercise price of outstanding warrants $ 32.50 $ 32.50  
Series A Cumulative Redeemable Preferred Shares [Member]      
Dividends, Preferred Stock [Abstract]      
Ordinary income 79.23 70.41 71.56
Capital gains 7.02 15.84 14.69
Total taxability of dividends per share $ 86.25 $ 86.25 86.25
Issuance date, Preferred Stock/Unit Feb. 12, 1997 Feb. 12, 1997  
Liquidation preference per share, Preferred Stock (in dollars per share) $ 1,000 $ 1,000  
Optional redemption date, Preferred Stock/Unit Feb. 12, 2027 Feb. 12, 2027  
Annual dividends payable per share, Preferred Stock/Unit (in dollars per share) $ 86.25 $ 86.25 86.25
Highwoods Properties, Inc. [Member] | ATM Equity Offering [Member]      
Class of Stock [Line Items]      
Number of Common Stock sold during the period (in shares) 2,922,905 2,500,031  
Net proceeds of Common Stock sold during the period $ 124,900 $ 104,100  
Highwoods Realty Limited Partnership [Member]      
Class of Stock [Line Items]      
Distributions paid per share of Common Unit (in dollars per share) $ 1.70 $ 1.70 $ 1.70
Dividends, Preferred Stock [Abstract]      
Number of units outstanding, Preferred Units (in shares) 29,050 29,060  
Carrying value, Preferred units $ 29,050 $ 29,060  
Liquidation preference per unit, Preferred Units (in dollars per share) $ 1,000 $ 1,000  
Highwoods Realty Limited Partnership [Member] | Series A Cumulative Redeemable Preferred Shares [Member]      
Dividends, Preferred Stock [Abstract]      
Total taxability of dividends per share $ 86.25 $ 86.25  
Issuance date, Preferred Stock/Unit Feb. 12, 1997 Feb. 12, 1997  
Liquidation preference per unit, Preferred Units (in dollars per share) $ 1,000 $ 1,000  
Optional redemption date, Preferred Stock/Unit Feb. 12, 2027 Feb. 12, 2027  
Annual dividends payable per share, Preferred Stock/Unit (in dollars per share) $ 86.25 $ 86.25  
v3.3.1.900
Employee Benefit Plans (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]      
Officer cash bonus target minimum 35.00%    
Officer cash bonus target maximum 130.00%    
Officer cash bonus performance factor minimum 0.00%    
Officer cash bonus performance factor maximum 200.00%    
Other management cash bonus target minimum 6.00%    
Other management cash bonus target maximum 30.00%    
Outstanding stock options and warrants 702,228 592,321  
Possible future share issuance authorized under equity incentive plans 3,084,158 1,382,406  
Total shares reserved for future issuance 3,786,386 1,974,727  
Possible future share issuance authorized under equity incentive plan restricted stock 1,100,000    
Stock-based compensation expense $ 6,884 $ 6,939 $ 6,899
Total unrecognized stock-based compensation costs $ 4,900    
Weighted average remaining term of vesting periods (in years) 2 years 3 months 18 days    
401(k) Savings Plan [Abstract]      
401(k) employer match percentage 75.00%    
401(k) employer match salary limit percentage 6.00%    
401(k) employer contribution $ 1,300 1,200 1,100
Retirement Plan [Abstract]      
Retirement plan qualification years of service (in years) 30 years    
Retirement plan qualification age 55 years    
Retirement plan qualification minimum years of service (in years) 10 years    
2009 and prior retirement plan immediate vesting percentage 100.00%    
Deferred Compensation [Abstract]      
Marketable securities of non-qualified deferred compensation plan fair value disclosure $ 2,736 3,635 3,996
Non Qualified Deferred Compensation Obligation Fair Value Disclosure [Roll Forward]      
Beginning deferred compensation liability 3,635 3,996 3,354
Mark to market adjustment to deferred compensation (in general and administrative expenses) (32) 235 803
Distributions from deferred compensation plans (867) (596) (161)
Ending deferred compensation liability $ 2,736 $ 3,635 $ 3,996
Employee Stock Purchase Plan [Abstract]      
Employee stock purchase plan salary limit percentage 25.00%    
Employee stock purchase plan market percentage 85.00%    
Number of days at end of quarter used to calculate ESPP discount 5 days    
Shares of Common Stock issued under the employee stock purchase plans 29,496 28,682 27,250
Employee Stock Purchase Plan Market Percentage Discount 15.00%    
Discount on newly issued shares expensed as additional compensation $ 200 $ 200 $ 200
Stock Options [Member]      
Stock Option Activity Rollforward [Abstract]      
Balance of options outstanding 577,321 [1],[2] 874,382 1,129,309
Options granted 197,408 190,330 168,700
Options canceled (3,829) (134,628)  
Options exercised (83,672) (352,763) (423,627)
Balance of options outstanding 687,228 [1],[2] 577,321 [1],[2] 874,382
Stock Option Activity, Weighted Average Exercise Price Rollforward [Abstract]      
Options outstanding, weighted average exercise price $ 34.92 $ 32.24 $ 30.10
Options granted, weighted average exercise price 45.61 37.90 36.50
Options canceled, weighted average exercise price 40.21 41.93  
Options exercised, weighted average exercise price 34.89 27.21 28.22
Options outstanding, weighted average exercise price $ 37.97 [1],[2] $ 34.92 $ 32.24
Weighted average remaining life of outstanding options 6 years 1 month 6 days    
Options exercisable 218,816    
Weighted average exercise price $ 33.03    
Weighted average remaining life 3 years 2 months 12 days    
Intrinsic value $ 2,300    
Cash received or receivable from options exercised 3,300 $ 11,100 $ 12,500
Total instrinsic value of options exercised 900 5,000 3,900
Total intrinsic value of options outstanding $ 4,300 $ 5,400 $ 4,300
Prior to 2005 and after 2013 Stock Options [Member]      
Compensation and Retirement Disclosure [Abstract]      
Vesting term of stock options issued/Period for absolute total return of restricted stock issued (in years) 4 years    
Option expiration period (in years) 10 years    
Grant date fair value of each stock option granted (in dollars per option) $ 6.19    
Assumptions Used in Determining Fair Values of Options/Restricted Stock Granted:      
Risk free interest rate [3] 1.70%    
Common stock dividend yield [4] 3.70%    
Expected volatility rate [5] 22.40%    
Average expected option life (in years) [6] 5 years 9 months    
Dividends paid for previous year 1 year    
2005 to 2013 Stock Options [Member]      
Compensation and Retirement Disclosure [Abstract]      
Vesting term of stock options issued/Period for absolute total return of restricted stock issued (in years) 4 years    
Option expiration period (in years) 7 years    
Grant date fair value of each stock option granted (in dollars per option)   $ 6.75 $ 6.50
Assumptions Used in Determining Fair Values of Options/Restricted Stock Granted:      
Risk free interest rate [3]   1.80% 1.00%
Common stock dividend yield [4]   4.50% 4.70%
Expected volatility rate [5]   30.30% 32.40%
Average expected option life (in years) [6]   5 years 9 months 5 years 9 months
Time-Based Restricted Stock [Member]      
Compensation and Retirement Disclosure [Abstract]      
Vesting term of stock options issued/Period for absolute total return of restricted stock issued (in years) 4 years    
Restricted Stock Activity Rollforward [Abstract]      
Balance of restricted stock outstanding 222,068 212,796 222,502
Awarded and issued [7] 71,994 94,932 86,144
Vested [8] (85,809) (85,660) (94,037)
Forfeited (3,533)   (1,813)
Balance of restricted stock outstanding 204,720 222,068 212,796
Restricted Stock Activity, Weighted Average Grant Date Fair Value Rollforward [Abstract]      
Restricted stock outstanding, weighted average grant date fair value $ 35.97 $ 33.96 $ 30.31
Awarded and issued, weighted average grant date fair value [7] 45.91 37.76 36.64
Vested, weighted average grant date fair value [8] 35.14 32.87 27.80
Forfeited, weighted average grant date fair value 39.94   36.01
Restricted stock outstanding, weighted average grant date fair value 39.74 35.97 33.96
Grant date fair value of restricted stock [7] $ 45.91 $ 37.76 $ 36.64
Fair value at grant date of restricted stock issued $ 3,300 $ 3,600 $ 3,200
Vesting date fair value of restricted stock $ 3,900 $ 3,200 $ 3,400
Total Return-Based Restricted Stock [Member]      
Compensation and Retirement Disclosure [Abstract]      
Vesting term of stock options issued/Period for absolute total return of restricted stock issued (in years) 3 years    
Assumptions Used in Determining Fair Values of Options/Restricted Stock Granted:      
Risk free interest rate [9] 1.00% 0.70% 0.40%
Common stock dividend yield [10] 3.80% 4.70% 4.90%
Expected volatility rate [11] 43.00% 43.40% 43.40%
Dividends paid for previous year 1 year    
Restricted Stock Activity Rollforward [Abstract]      
Balance of restricted stock outstanding 207,957 133,388 125,288
Awarded and issued [13] 118,817 [12] 74,569 65,486
Vested [14] (129,762) [12]   (41,863)
Forfeited (1,709)   (15,523)
Balance of restricted stock outstanding 195,303 207,957 133,388
Restricted Stock Activity, Weighted Average Grant Date Fair Value Rollforward [Abstract]      
Restricted stock outstanding, weighted average grant date fair value $ 35.70 $ 35.29 $ 32.87
Awarded and issued, weighted average grant date fair value [13] 37.64 [12] 35.58 31.73
Vested, weighted average grant date fair value [14] 31.97 [12]   24.75
Forfeited, weighted average grant date fair value 37.25   24.75
Restricted stock outstanding, weighted average grant date fair value $ 36.66 $ 35.70 $ 35.29
Percentage of return-based restricted stock issued to officers that will vest, minimum 0.00% 0.00% 0.00%
Percentage of return-based restricted stock issued to officers that will vest, maximum 150.00% 150.00% 150.00%
Company total return, total return-based restricted stock 100.00%    
Vesting percentage, total return-based restricted stock 75.00% 75.00% 50.00%
Grant date fair value of restricted stock [13] $ 37.64 [12] $ 35.58 $ 31.73
Fair value at grant date of restricted stock issued $ 2,500 $ 2,700 $ 2,100
Vesting date fair value of restricted stock $ 5,900 $ 0 $ 1,500
Period preceding date of grant 3 months    
2012 Plan [Member]      
Restricted Stock Activity Rollforward [Abstract]      
Awarded and issued [12] 61,860    
Vested [12] (61,860)    
Total Return-Based Restricted Stock 2015 Issuance [Member]      
Restricted Stock Activity, Weighted Average Grant Date Fair Value Rollforward [Abstract]      
Awarded and issued, weighted average grant date fair value $ 43.77    
Grant date fair value of restricted stock $ 43.77    
[1] The Company had 218,816 options exercisable at December 31, 2015 with a weighted average exercise price of $33.03, weighted average remaining life of 3.2 years and intrinsic value of $2.3 million. Of these exercisable options, there were no exercise prices higher than the market price of our Common Stock at December 31, 2015.
[2] The outstanding options at December 31, 2015 had a weighted average remaining life of 6.1 years.
[3] Represents the interest rate as of the grant date on US treasury bonds having the same life as the estimated life of the option grants.
[4] The dividend yield is calculated utilizing the dividends paid for the previous one-year period and the per share price of Common Stock on the date of grant.
[5] Based on the historical volatility of Common Stock over a period relevant to the related stock option grant.
[6] The average expected option life is based on an analysis of the Company's historical data.
[7] The weighted average fair value at grant date of time-based restricted stock issued during the years ended December 31, 2015, 2014 and 2013 was $3.3 million, $3.6 million and $3.2 million, respectively.
[8] The vesting date fair value of time-based restricted stock that vested during the years ended December 31, 2015, 2014 and 2013 was $3.9 million, $3.2 million and $3.4 million, respectively. Vested shares include those shares surrendered by employees to satisfy tax withholding obligations in connection with such vesting.
[9] Represents the interest rate as of the grant date on US treasury bonds having the same life as the estimated life of the total return-based restricted stock grants.
[10] The dividend yield is calculated utilizing the dividends paid for the previous one-year period and the average per share price of Common Stock during the three-month period preceding the date of grant.
[11] Based on the historical volatility of Common Stock over a period relevant to the related total return-based restricted stock grant.
[12] The 2015 amounts include 61,860 additional shares from the 2012 plan since the plan's payout was in excess of the initial 100% target.
[13] The fair value at grant date of total return-based restricted stock issued during the years ended December 31, 2015, 2014 and 2013 was $2.5 million, $2.7 million and $2.1 million, respectively, at target.
[14] The vesting date fair value of total return-based restricted stock that vested during the years ended December 31, 2015 and 2013 was $5.9 million and $1.5 million, respectively, based on the performance of the specific plans. Vested shares include those shares surrendered by employees to satisfy tax withholding obligations in connection with such vesting. There were no vested shares of total return-based restricted stock during the year ended December 31, 2014.
v3.3.1.900
Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) Calculation [Roll Forward]    
Beginning balance $ (3,912)  
Ending balance (3,811) $ (3,912)
Tax Increment Financing Bond [Member]    
Accumulated Other Comprehensive Income (Loss) Calculation [Roll Forward]    
Beginning balance (445) (1,029)
Unrealized gains/(losses) 445 584
Ending balance 0 (445)
Cash Flow Hedges [Member]    
Accumulated Other Comprehensive Income (Loss) Calculation [Roll Forward]    
Beginning balance (3,467) (1,582)
Unrealized gains/(losses) (4,040) (5,662)
Amortization reclassified out of AOCL [1] 3,696 3,777
Ending balance $ (3,811) $ (3,467)
[1] Amounts reclassified out of AOCL into contractual interest expense.
v3.3.1.900
Rental and Other Revenues; Rental Property and Other Expenses (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
 [1]
Jun. 30, 2015
 [1]
Mar. 31, 2015
 [1]
Dec. 31, 2014
 [1]
Sep. 30, 2014
 [1]
Jun. 30, 2014
 [1]
Mar. 31, 2014
 [1]
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Real Estate Revenue, Net [Abstract]                      
Contractual rents, net                 $ 513,909 $ 476,684 $ 437,855
Straight-line rental income, net                 22,054 21,045 16,653
Amortization of lease incentives                 (1,493) (1,419) (1,361)
Cost recovery income, net                 45,247 39,112 31,869
Lease termination fees                 990 658 1,436
Fee income                 3,717 3,313 5,282
Other miscellaneous operating revenues                 20,247 16,478 13,274
Real estate revenue, net $ 160,126 [1] $ 150,766 $ 148,543 $ 145,236 $ 140,724 $ 139,370 $ 139,956 $ 135,821 604,671 555,871 505,008
Future minimum base rents [Abstract]                      
2016 566,672               566,672    
2017 539,352               539,352    
2018 502,547               502,547    
2019 437,797               437,797    
2020 362,295               362,295    
Thereafter 1,304,530               1,304,530    
Total future minimum base rents $ 3,713,193               3,713,193    
Operating Costs and Expenses [Abstract]                      
Utilities, insurance and real estate taxes                 117,470 113,226 101,036
Maintenance, cleaning and general building                 79,091 74,109 67,319
Property management and administrative expenses                 12,446 12,093 11,515
Other miscellaneous operating expenses                 6,934 6,456 4,317
Rental property and other expenses, net                 $ 215,941 $ 205,884 $ 184,187
[1] As a result of discontinued operations, the amounts presented may not equal the amounts previously reported in the most recent Form 10-Qs or prior 10-K for each period. Below is a reconciliation to the amounts previously reported: Quarter Ended March 31, June 30, September 30, 2015 2015 2015Rental and other revenues, as reported$157,310 $161,136 $163,736Discontinued operations(12,074) (12,593) (12,970)Rental and other revenues, as adjusted$145,236 $148,543 $150,766Income from continuing operations, as reported$20,835 $26,891 $31,617Discontinued operations(3,915) (4,670) (4,265)Income from continuing operations, as adjusted$16,920 $22,221 $27,352Income from discontinued operations, as reported$— $— $—Additional discontinued operations from properties sold subsequent to the respective reporting period3,915 4,670 4,265Income from discontinued operations, as adjusted$3,915 $4,670 $4,265 Quarter Ended March 31, June 30, September 30, December 31, 2014 2014 2014 2014Rental and other revenues, as reported$148,453 $152,722 $152,629 $154,664Discontinued operations(12,632) (12,766) (13,259) (13,940)Rental and other revenues, as adjusted$135,821 $139,956 $139,370 $140,724Income from continuing operations, as reported$13,192 $24,512 $54,299 $23,585Discontinued operations(4,213) (4,138) (4,816) (5,434)Income from continuing operations, as adjusted$8,979 $20,374 $49,483 $18,151Income from discontinued operations, as reported$384 $— $— $—Additional discontinued operations from properties sold subsequent to the respective reporting period4,213 4,138 4,816 5,434Income from discontinued operations, as adjusted$4,597 $4,138 $4,816 $5,434
v3.3.1.900
Real Estate and Other Assets Held For Sale and Discontinued Operations (Details)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2015
USD ($)
ft²
Sep. 30, 2015
USD ($)
 [1]
Jun. 30, 2015
USD ($)
 [1]
Mar. 31, 2015
USD ($)
 [1]
Dec. 31, 2014
USD ($)
Sep. 30, 2014
USD ($)
 [1]
Jun. 30, 2014
USD ($)
 [1]
Mar. 31, 2014
USD ($)
 [1]
Dec. 31, 2015
USD ($)
ft²
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                      
Rentable square feet of commercial real estate (in square feet) | ft² 32,486,000               32,486,000    
Rentable square feet of commercial real estate under development (in square feet) | ft² 1,454,200               1,454,200    
Assets, held for sale [Abstract]                      
Land $ 16,681       $ 16,406       $ 16,681 $ 16,406  
Building and tenant improvements 322,811       313,323       322,811 313,323  
Development in-process 0       4,562       0 4,562  
Land held for development 1,089       2,084       1,089 2,084  
Less accumulated depreciation (131,274)       (131,419)       (131,274) (131,419)  
Net real estate assets 209,307       204,956       209,307 204,956  
Accrued straight-line rents receivable, net 11,730       11,643       11,730 11,643  
Deferred leasing costs, net 6,690       6,320       6,690 6,320  
Prepaid expenses and other assets 13,221       13,896       13,221 13,896  
Real estate and other assets, net, held for sale 240,948       236,815       240,948 236,815  
Liabilities [Abstract]                      
Accounts payable, accrued expenses and other liabilities (6,717)       (6,151)       (6,717) (6,151)  
Financing obligation (7,402)       (8,962)       (7,402) (8,962)  
Liabilities held for sale (14,119)       (15,113)       (14,119) (15,113)  
Discontinued Operations [Abstract]                      
Rental and other revenues                 50,935 52,597 $ 72,614
Operating expenses:                      
Rental property and other expenses                 20,805 19,620 27,440
Depreciation and amortization                 14,039 15,386 19,773
General and administrative                 2,366 965 812
Total operating expenses                 37,210 35,971 48,025
Interest expense                 621 725 817
Other income                 2,635 2,700 3,086
Income from discontinued operations                 15,739 18,601 26,858
Impairments of real estate assets                 0 0 (2,194)
Net gains on disposition of discontinued operations                 0 384 63,792
Total income from discontinued operations $ 2,889 [1] $ 4,265 $ 4,670 $ 3,915 $ 5,434 [1] $ 4,816 $ 4,138 $ 4,597 15,739 18,985 88,456
Net Cash Provided by (Used in) Discontinued Operations [Abstract]                      
Cash flows from operating activities                 27,579 32,485 32,644
Cash flows from investing activities                 $ (16,445) $ (8,279) $ (7,482)
Office Property [Member]                      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                      
Rentable square feet of commercial real estate (in square feet) | ft² 468,000               468,000    
Retail Property [Member]                      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                      
Rentable square feet of commercial real estate (in square feet) | ft² 776,000               776,000    
Rentable square feet of commercial real estate under development (in square feet) | ft² 28,000               28,000    
[1] As a result of discontinued operations, the amounts presented may not equal the amounts previously reported in the most recent Form 10-Qs or prior 10-K for each period. Below is a reconciliation to the amounts previously reported: Quarter Ended March 31, June 30, September 30, 2015 2015 2015Rental and other revenues, as reported$157,310 $161,136 $163,736Discontinued operations(12,074) (12,593) (12,970)Rental and other revenues, as adjusted$145,236 $148,543 $150,766Income from continuing operations, as reported$20,835 $26,891 $31,617Discontinued operations(3,915) (4,670) (4,265)Income from continuing operations, as adjusted$16,920 $22,221 $27,352Income from discontinued operations, as reported$— $— $—Additional discontinued operations from properties sold subsequent to the respective reporting period3,915 4,670 4,265Income from discontinued operations, as adjusted$3,915 $4,670 $4,265 Quarter Ended March 31, June 30, September 30, December 31, 2014 2014 2014 2014Rental and other revenues, as reported$148,453 $152,722 $152,629 $154,664Discontinued operations(12,632) (12,766) (13,259) (13,940)Rental and other revenues, as adjusted$135,821 $139,956 $139,370 $140,724Income from continuing operations, as reported$13,192 $24,512 $54,299 $23,585Discontinued operations(4,213) (4,138) (4,816) (5,434)Income from continuing operations, as adjusted$8,979 $20,374 $49,483 $18,151Income from discontinued operations, as reported$384 $— $— $—Additional discontinued operations from properties sold subsequent to the respective reporting period4,213 4,138 4,816 5,434Income from discontinued operations, as adjusted$4,597 $4,138 $4,816 $5,434
v3.3.1.900
Earnings Per Share and Per Unit (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Numerator:                      
Income from continuing operations $ 19,028 [1] $ 27,352 [1] $ 22,221 [1] $ 16,920 [1] $ 18,151 [1] $ 49,483 [1] $ 20,374 [1] $ 8,979 [1] $ 85,521 $ 96,987 $ 42,641
Net (income) attributable to noncontrolling interests in the Operating Partnership from continuing operations                 (2,443) (2,945) (1,294)
Net (income) attributable to noncontrolling interests in consolidated affiliates from continuing operations (316) (324) (328) (296) (314) (291) (438) (423) (1,264) (1,466) (949)
Dividends on Preferred Stock (627) (626) (626) (627) (626) (627) (627) (627) (2,506) (2,507) (2,508)
Income from continuing operations available for common stockholders                 79,308 90,069 37,890
Income from discontinued operations 2,889 [1] 4,265 [1] 4,670 [1] 3,915 [1] 5,434 [1] 4,816 [1] 4,138 [1] 4,597 [1] 15,739 18,985 88,456
Net (income) attributable to noncontrolling interests in the Operating Partnership from discontinued operations                 (475) (597) (3,397)
Income from discontinued operations available for common stockholders                 15,264 18,388 85,059
Net income available for common stockholders $ 20,352 $ 29,749 $ 25,155 $ 19,316 $ 21,916 $ 51,708 $ 22,705 $ 12,128 $ 94,572 $ 108,457 $ 122,949
Denominator:                      
Denominator for basic earnings per Common Share - weighted average shares (in shares)                 94,404 90,743 85,335
Earnings per Common Share - basic:                      
Income from continuing operations available for common stockholders (in dollars per share) $ 0.18 $ 0.27 $ 0.22 $ 0.17 $ 0.18 $ 0.52 $ 0.21 $ 0.09 $ 0.84 $ 1.00 $ 0.44
Income from discontinued operations available for common stockholders (in dollars per share) 0.03 0.04 0.05 0.04 0.06 0.05 0.04 0.04 0.16 0.20 1.00
Net income available for common stockholders (in dollars per share) $ 0.21 $ 0.31 $ 0.27 $ 0.21 $ 0.24 $ 0.57 $ 0.25 $ 0.13 $ 1.00 $ 1.20 $ 1.44
Numerator:                      
Income from continuing operations $ 19,028 [1] $ 27,352 [1] $ 22,221 [1] $ 16,920 [1] $ 18,151 [1] $ 49,483 [1] $ 20,374 [1] $ 8,979 [1] $ 85,521 $ 96,987 $ 42,641
Net (income) attributable to noncontrolling interests in consolidated affiliates from continuing operations (316) (324) (328) (296) (314) (291) (438) (423) (1,264) (1,466) (949)
Dividends on Preferred Stock (627) (626) (626) (627) (626) (627) (627) (627) (2,506) (2,507) (2,508)
Income from continuing operations available for common stockholders before net (income) attributable to noncontrolling interests in the Operating Partnership                 81,751 93,014 39,184
Income from discontinued operations $ 2,889 [1] $ 4,265 [1] $ 4,670 [1] $ 3,915 [1] $ 5,434 [1] $ 4,816 [1] $ 4,138 [1] $ 4,597 [1] 15,739 18,985 88,456
Net income available for common stockholders before net (income) attributable to noncontrolling interests in the Operating Partnership                 $ 97,490 $ 111,999 $ 127,640
Denominator:                      
Denominator for basic earnings per Common Share - weighted average shares (in shares)                 94,404 90,743 85,335
Stock options using the treasury method                 87 119 114
Noncontrolling interests Common Units                 2,915 2,938 3,387
Denominator for diluted earnings per Common Share - adjusted weighted average shares and assumed conversions (in shares) (1) (2) [2],[3]                 97,406 93,800 88,836
Earnings per Common Share - diluted:                      
Income from continuing operations available for common stockholders (in dollars per share) $ 0.18 $ 0.27 $ 0.22 $ 0.17 $ 0.18 $ 0.52 $ 0.21 $ 0.09 $ 0.84 $ 0.99 $ 0.44
Income from discontinued operations available for common stockholders (in dollars per share) 0.03 0.04 0.05 0.04 0.06 0.05 0.04 0.04 0.16 0.20 1.00
Net income available for common stockholders (in dollars per share) $ 0.21 $ 0.31 $ 0.27 $ 0.21 $ 0.24 $ 0.57 $ 0.25 $ 0.13 $ 1.00 $ 1.19 $ 1.44
Earnings per Common Unit - diluted:                      
Number of anti-dilutive options and warrants not included in earnings per share (in dollars per share)                 200 0 303
Highwoods Realty Limited Partnership [Member]                      
Numerator:                      
Income from continuing operations $ 19,028 [4] $ 27,352 [4] $ 22,221 [4] $ 16,920 [4] $ 18,151 [4] $ 49,483 [4] $ 20,374 [4] $ 8,979 [4] $ 85,521 $ 96,987 $ 42,590
Net (income) attributable to noncontrolling interests in consolidated affiliates from continuing operations (316) (324) (328) (296) (314) (291) (438) (423) (1,264) (1,466) (949)
Distributions on Preferred Units (627) (626) (626) (627) (626) (627) (627) (627) (2,506) (2,507) (2,508)
Income from continuing operations available for common unitholders                 81,751 93,014 39,133
Income from discontinued operations available for common unitholders 2,889 [4] 4,265 [4] 4,670 [4] 3,915 [4] 5,434 [4] 4,816 [4] 4,138 [4] 4,597 [4] 15,739 18,985 88,456
Net income available for common unitholders $ 20,974 $ 30,667 $ 25,937 $ 19,912 $ 22,645 $ 53,381 $ 23,447 $ 12,526 $ 97,490 $ 111,999 $ 127,589
Denominator:                      
Denominator for basic earnings per Common Unit - weighted average units (in shares)                 96,910 93,272 88,313
Earnings per Common Unit - basic:                      
Income from continuing operations available for common unitholders (in dollars per share) $ 0.18 $ 0.27 $ 0.22 $ 0.17 $ 0.18 $ 0.52 $ 0.21 $ 0.09 $ 0.84 $ 1.00 $ 0.44
Income from discontinued operations available for common unitholders (in dollars per share) 0.03 0.05 0.05 0.04 0.06 0.05 0.04 0.05 0.17 0.20 1.00
Net income available for common unitholders (in dollars per share) $ 0.21 $ 0.32 $ 0.27 $ 0.21 $ 0.24 $ 0.57 $ 0.25 $ 0.14 $ 1.01 $ 1.20 $ 1.44
Numerator:                      
Income from continuing operations $ 19,028 [4] $ 27,352 [4] $ 22,221 [4] $ 16,920 [4] $ 18,151 [4] $ 49,483 [4] $ 20,374 [4] $ 8,979 [4] $ 85,521 $ 96,987 $ 42,590
Net (income) attributable to noncontrolling interests in consolidated affiliates from continuing operations (316) (324) (328) (296) (314) (291) (438) (423) (1,264) (1,466) (949)
Distributions on Preferred Units (627) (626) (626) (627) (626) (627) (627) (627) (2,506) (2,507) (2,508)
Income from continuing operations available for common unitholders                 81,751 93,014 39,133
Income from discontinued operations available for common unitholders 2,889 [4] 4,265 [4] 4,670 [4] 3,915 [4] 5,434 [4] 4,816 [4] 4,138 [4] 4,597 [4] 15,739 18,985 88,456
Net income available for common unitholders $ 20,974 $ 30,667 $ 25,937 $ 19,912 $ 22,645 $ 53,381 $ 23,447 $ 12,526 $ 97,490 $ 111,999 $ 127,589
Denominator:                      
Denominator for basic earnings per Common Unit - weighted average units (in shares)                 96,910 93,272 88,313
Stock options using the treasury method                 87 119 114
Denominator for diluted earnings per Common Unit - adjusted weighted average units and assumed conversions (in shares) (1) (2) [2],[3]                 96,997 93,391 88,427
Earnings per Common Unit - diluted:                      
Income from continuing operations available for common unitholders (in dollars per share) $ 0.18 $ 0.27 $ 0.22 $ 0.17 $ 0.18 $ 0.52 $ 0.21 $ 0.09 $ 0.84 $ 1.00 $ 0.44
Income from discontinued operations available for common unitholders (in dollars per share) 0.03 0.05 0.05 0.04 0.06 0.05 0.04 0.05 0.17 0.20 1.00
Net income available for common unitholders (in dollars per share) $ 0.21 $ 0.32 $ 0.27 $ 0.21 $ 0.24 $ 0.57 $ 0.25 $ 0.14 $ 1.01 $ 1.20 $ 1.44
Number of anti-dilutive options and warrants not included in earnings per share (in dollars per share)                 200 0 303
[1] As a result of discontinued operations, the amounts presented may not equal the amounts previously reported in the most recent Form 10-Qs or prior 10-K for each period. Below is a reconciliation to the amounts previously reported: Quarter Ended March 31, June 30, September 30, 2015 2015 2015Rental and other revenues, as reported$157,310 $161,136 $163,736Discontinued operations(12,074) (12,593) (12,970)Rental and other revenues, as adjusted$145,236 $148,543 $150,766Income from continuing operations, as reported$20,835 $26,891 $31,617Discontinued operations(3,915) (4,670) (4,265)Income from continuing operations, as adjusted$16,920 $22,221 $27,352Income from discontinued operations, as reported$— $— $—Additional discontinued operations from properties sold subsequent to the respective reporting period3,915 4,670 4,265Income from discontinued operations, as adjusted$3,915 $4,670 $4,265 Quarter Ended March 31, June 30, September 30, December 31, 2014 2014 2014 2014Rental and other revenues, as reported$148,453 $152,722 $152,629 $154,664Discontinued operations(12,632) (12,766) (13,259) (13,940)Rental and other revenues, as adjusted$135,821 $139,956 $139,370 $140,724Income from continuing operations, as reported$13,192 $24,512 $54,299 $23,585Discontinued operations(4,213) (4,138) (4,816) (5,434)Income from continuing operations, as adjusted$8,979 $20,374 $49,483 $18,151Income from discontinued operations, as reported$384 $— $— $—Additional discontinued operations from properties sold subsequent to the respective reporting period4,213 4,138 4,816 5,434Income from discontinued operations, as adjusted$4,597 $4,138 $4,816 $5,434
[2] Includes all unvested restricted stock where dividends on such restricted stock are non-forfeitable.
[3] There were 0.2 million and 0.3 million options outstanding during the years ended December 31, 2015 and 2013, respectively, that were not included in the computation of diluted earnings per share because the impact of including such options would be anti-dilutive. There were no such options outstanding during the year ended December 31, 2014.
[4] As a result of discontinued operations, the amounts presented may not equal the amounts previously reported in the most recent Form 10-Qs or prior 10-K for each period. Below is a reconciliation to the amounts previously reported: Quarter Ended March 31, June 30, September 30, 2015 2015 2015Rental and other revenues, as reported$157,310 $161,136 $163,736Discontinued operations(12,074) (12,593) (12,970)Rental and other revenues, as adjusted$145,236 $148,543 $150,766Income from continuing operations, as reported$20,835 $26,891 $31,617Discontinued operations(3,915) (4,670) (4,265)Income from continuing operations, as adjusted$16,920 $22,221 $27,352Income from discontinued operations, as reported$— $— $—Additional discontinued operations from properties sold subsequent to the respective reporting period3,915 4,670 4,265Income from discontinued operations, as adjusted$3,915 $4,670 $4,265 Quarter Ended March 31, June 30, September 30, December 31, 2014 2014 2014 2014Rental and other revenues, as reported$148,453 $152,722 $152,629 $154,664Discontinued operations(12,632) (12,766) (13,259) (13,940)Rental and other revenues, as adjusted$135,821 $139,956 $139,370 $140,724Income from continuing operations, as reported$13,192 $24,512 $54,299 $23,585Discontinued operations(4,213) (4,138) (4,816) (5,434)Income from continuing operations, as adjusted$8,979 $20,374 $49,483 $18,151Income from discontinued operations, as reported$384 $— $— $—Additional discontinued operations from properties sold subsequent to the respective reporting period4,213 4,138 4,816 5,434Income from discontinued operations, as adjusted$4,597 $4,138 $4,816 $5,434
v3.3.1.900
Income Taxes (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Highwoods Properties, Inc. [Member]      
Income Tax Disclosure [Line Items]      
Minimum dividend required to maintain REIT status $ 1.31 $ 1.13 $ 1.08
Tax basis of assets $ 4,200,000 $ 3,600,000  
Tax basis of liabilities 2,600,000 2,200,000  
Income Tax Expense/(Benefit) [Abstract]      
Current federal tax expense 949 1,480 $ 60
Current state tax expense 351 161 312
Current tax expense 1,300 1,641 372
Deferred federal tax expense/(benefit) (233) (1,628) 1,479
Deferred state tax expense/(benefit) (115) (305) 277
Deferred tax expense/(benefit) (348) (1,933) 1,756
Total income tax expense/(benefit) 434 (292) 407
Net deferred tax assets   100  
Net deferred tax liabilities (200)    
Highwoods Properties, Inc. [Member] | Equity in Earnings of Unconsolidated Affiliates [Member]      
Income Tax Expense/(Benefit) [Abstract]      
Income tax expense netted against gain 0 0 (1,721)
Highwoods Properties, Inc. [Member] | Disposition of Wholly Owned Property [Member]      
Income Tax Expense/(Benefit) [Abstract]      
Income tax expense netted against gain (518) 0 $ 0
Highwoods Realty Limited Partnership [Member]      
Income Tax Disclosure [Line Items]      
Tax basis of assets 4,200,000 3,600,000  
Tax basis of liabilities $ 2,600,000 $ 2,200,000  
v3.3.1.900
Segment Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
 [1]
Jun. 30, 2015
 [1]
Mar. 31, 2015
 [1]
Dec. 31, 2014
Sep. 30, 2014
 [1]
Jun. 30, 2014
 [1]
Mar. 31, 2014
 [1]
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Segment Reporting Information [Line Items]                      
Rental and other revenues $ 160,126 [1] $ 150,766 $ 148,543 $ 145,236 $ 140,724 [1] $ 139,370 $ 139,956 $ 135,821 $ 604,671 $ 555,871 $ 505,008
Total net operating income                 388,730 349,987 320,821
Reconciliation to income from continuing operations before disposition of investment properties and activity in unconsolidated affiliates:                      
Depreciation and amortization                 (201,918) (180,637) (162,937)
Impairments of real estate assets                 0 (588) 0
General and administrative expense                 (37,642) (35,258) (36,381)
Interest expense                 (86,052) (85,127) (91,886)
Other income                 1,726 2,431 3,312
Income from continuing operations before disposition of investment properties and activity in unconsolidated affiliates                 64,844 50,808 32,929
Total Assets 4,493,432       3,999,123       4,493,432 3,999,123  
Office Total Segment [Member]                      
Segment Reporting Information [Line Items]                      
Rental and other revenues                 589,946 540,917 489,634
Total net operating income                 378,632 339,848 310,346
Reconciliation to income from continuing operations before disposition of investment properties and activity in unconsolidated affiliates:                      
Total Assets 4,080,264       3,573,696       4,080,264 3,573,696  
Office Atlanta, GA [Member]                      
Segment Reporting Information [Line Items]                      
Rental and other revenues                 108,590 96,075 80,330
Total net operating income                 67,094 58,180 49,650
Reconciliation to income from continuing operations before disposition of investment properties and activity in unconsolidated affiliates:                      
Total Assets 1,013,226       700,085       1,013,226 700,085  
Office Greensboro, NC [Member]                      
Segment Reporting Information [Line Items]                      
Rental and other revenues                 21,251 25,018 26,047
Total net operating income                 13,395 15,784 16,788
Reconciliation to income from continuing operations before disposition of investment properties and activity in unconsolidated affiliates:                      
Total Assets 131,027       139,479       131,027 139,479  
Office Greenville, SC [Member]                      
Segment Reporting Information [Line Items]                      
Rental and other revenues                 0 2,140 3,399
Total net operating income                 0 1,150 1,893
Office Memphis, TN [Member]                      
Segment Reporting Information [Line Items]                      
Rental and other revenues                 47,137 41,016 38,369
Total net operating income                 29,534 24,376 22,133
Reconciliation to income from continuing operations before disposition of investment properties and activity in unconsolidated affiliates:                      
Total Assets 277,866       280,186       277,866 280,186  
Office Nashville, TN [Member]                      
Segment Reporting Information [Line Items]                      
Rental and other revenues                 88,310 80,722 62,054
Total net operating income                 62,387 55,354 42,598
Reconciliation to income from continuing operations before disposition of investment properties and activity in unconsolidated affiliates:                      
Total Assets 591,111       527,317       591,111 527,317  
Office Orlando, FL [Member]                      
Segment Reporting Information [Line Items]                      
Rental and other revenues                 44,621 36,574 21,798
Total net operating income                 25,524 21,286 12,048
Reconciliation to income from continuing operations before disposition of investment properties and activity in unconsolidated affiliates:                      
Total Assets 303,843       291,611       303,843 291,611  
Office Pittsburgh, PA [Member]                      
Segment Reporting Information [Line Items]                      
Rental and other revenues                 59,392 56,692 56,125
Total net operating income                 34,348 31,505 31,134
Reconciliation to income from continuing operations before disposition of investment properties and activity in unconsolidated affiliates:                      
Total Assets 339,186       334,539       339,186 334,539  
Office Raleigh, NC [Member]                      
Segment Reporting Information [Line Items]                      
Rental and other revenues                 102,841 87,428 85,417
Total net operating income                 72,981 61,317 60,075
Reconciliation to income from continuing operations before disposition of investment properties and activity in unconsolidated affiliates:                      
Total Assets 663,617       669,450       663,617 669,450  
Office Richmond, VA [Member]                      
Segment Reporting Information [Line Items]                      
Rental and other revenues                 42,089 45,559 47,576
Total net operating income                 27,922 30,021 32,454
Reconciliation to income from continuing operations before disposition of investment properties and activity in unconsolidated affiliates:                      
Total Assets 211,574       215,987       211,574 215,987  
Office Tampa, FL [Member]                      
Segment Reporting Information [Line Items]                      
Rental and other revenues                 75,715 69,693 68,519
Total net operating income                 45,447 40,875 41,573
Reconciliation to income from continuing operations before disposition of investment properties and activity in unconsolidated affiliates:                      
Total Assets 548,814       415,042       548,814 415,042  
Other Segment [Member]                      
Segment Reporting Information [Line Items]                      
Rental and other revenues                 14,725 14,954 15,374
Total net operating income                 10,098 10,139 $ 10,475
Reconciliation to income from continuing operations before disposition of investment properties and activity in unconsolidated affiliates:                      
Total Assets [2] $ 413,168       $ 425,427       $ 413,168 $ 425,427  
[1] As a result of discontinued operations, the amounts presented may not equal the amounts previously reported in the most recent Form 10-Qs or prior 10-K for each period. Below is a reconciliation to the amounts previously reported: Quarter Ended March 31, June 30, September 30, 2015 2015 2015Rental and other revenues, as reported$157,310 $161,136 $163,736Discontinued operations(12,074) (12,593) (12,970)Rental and other revenues, as adjusted$145,236 $148,543 $150,766Income from continuing operations, as reported$20,835 $26,891 $31,617Discontinued operations(3,915) (4,670) (4,265)Income from continuing operations, as adjusted$16,920 $22,221 $27,352Income from discontinued operations, as reported$— $— $—Additional discontinued operations from properties sold subsequent to the respective reporting period3,915 4,670 4,265Income from discontinued operations, as adjusted$3,915 $4,670 $4,265 Quarter Ended March 31, June 30, September 30, December 31, 2014 2014 2014 2014Rental and other revenues, as reported$148,453 $152,722 $152,629 $154,664Discontinued operations(12,632) (12,766) (13,259) (13,940)Rental and other revenues, as adjusted$135,821 $139,956 $139,370 $140,724Income from continuing operations, as reported$13,192 $24,512 $54,299 $23,585Discontinued operations(4,213) (4,138) (4,816) (5,434)Income from continuing operations, as adjusted$8,979 $20,374 $49,483 $18,151Income from discontinued operations, as reported$384 $— $— $—Additional discontinued operations from properties sold subsequent to the respective reporting period4,213 4,138 4,816 5,434Income from discontinued operations, as adjusted$4,597 $4,138 $4,816 $5,434
[2] Includes the Plaza assets, which are included in real estate and other assets, net, held for sale on our Consolidated Balance Sheets.
v3.3.1.900
Quarterly Financial Data (Unaudited) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Quarterly Financial Data [Line Items]                      
Rental and other revenues $ 160,126 [1] $ 150,766 [1] $ 148,543 [1] $ 145,236 [1] $ 140,724 [1] $ 139,370 [1] $ 139,956 [1] $ 135,821 [1] $ 604,671 $ 555,871 $ 505,008
Income from continuing operations 19,028 [1] 27,352 [1] 22,221 [1] 16,920 [1] 18,151 [1] 49,483 [1] 20,374 [1] 8,979 [1] 85,521 96,987 42,641
Total income from discontinued operations 2,889 [1] 4,265 [1] 4,670 [1] 3,915 [1] 5,434 [1] 4,816 [1] 4,138 [1] 4,597 [1] 15,739 18,985 88,456
Net income 21,917 31,617 26,891 20,835 23,585 54,299 24,512 13,576 101,260 115,972 131,097
Net (income) attributable to noncontrolling interests in the Operating Partnership (622) (918) (782) (596) (729) (1,673) (742) (398) (2,918) (3,542) (4,691)
Net (income) attributable to noncontrolling interests in consolidated affiliates (316) (324) (328) (296) (314) (291) (438) (423) (1,264) (1,466) (949)
Dividends on Preferred Stock (627) (626) (626) (627) (626) (627) (627) (627) (2,506) (2,507) (2,508)
Net income available for common stockholders $ 20,352 $ 29,749 $ 25,155 $ 19,316 $ 21,916 $ 51,708 $ 22,705 $ 12,128 $ 94,572 $ 108,457 $ 122,949
Earnings per Common Share - basic:                      
Income from continuing operations available for common stockholders (in dollars per share) $ 0.18 $ 0.27 $ 0.22 $ 0.17 $ 0.18 $ 0.52 $ 0.21 $ 0.09 $ 0.84 $ 1.00 $ 0.44
Income from discontinued operations available for common stockholders (in dollars per share) 0.03 0.04 0.05 0.04 0.06 0.05 0.04 0.04 0.16 0.20 1.00
Net income available for common stockholders (in dollars per share) 0.21 0.31 0.27 0.21 0.24 0.57 0.25 0.13 1.00 1.20 1.44
Earnings per Common Share - diluted:                      
Income from continuing operations available for common stockholders (in dollars per share) 0.18 0.27 0.22 0.17 0.18 0.52 0.21 0.09 0.84 0.99 0.44
Income from discontinued operations available for common stockholders (in dollars per share) 0.03 0.04 0.05 0.04 0.06 0.05 0.04 0.04 0.16 0.20 1.00
Net income available for common stockholders (in dollars per share) $ 0.21 $ 0.31 $ 0.27 $ 0.21 $ 0.24 $ 0.57 $ 0.25 $ 0.13 $ 1.00 $ 1.19 $ 1.44
Continuing Operations Reconciliation To Previous Reported Amounts [Abstract]                      
Rental and other revenues, as adjusted $ 160,126 [1] $ 150,766 [1] $ 148,543 [1] $ 145,236 [1] $ 140,724 [1] $ 139,370 [1] $ 139,956 [1] $ 135,821 [1] $ 604,671 $ 555,871 $ 505,008
Income from continuing operations, as adjusted 19,028 [1] 27,352 [1] 22,221 [1] 16,920 [1] 18,151 [1] 49,483 [1] 20,374 [1] 8,979 [1] 85,521 96,987 42,641
Total income from discontinued operations 2,889 [1] 4,265 [1] 4,670 [1] 3,915 [1] 5,434 [1] 4,816 [1] 4,138 [1] 4,597 [1] 15,739 18,985 88,456
Highwoods Properties, Inc. [Member]                      
Quarterly Financial Data [Line Items]                      
Rental and other revenues   150,766 148,543 145,236 140,724 139,370 139,956 135,821      
Income from continuing operations   27,352 22,221 16,920 18,151 49,483 20,374 8,979      
Total income from discontinued operations   4,265 4,670 3,915 5,434 4,816 4,138 4,597      
Net (income) attributable to noncontrolling interests in the Operating Partnership                 (2,918) (3,542)  
Net income available for common stockholders                 94,572 108,457 122,949
Continuing Operations Reconciliation To Previous Reported Amounts [Abstract]                      
Rental and other revenues, as reported   163,736 161,136 157,310 154,664 152,629 152,722 148,453      
Discontinued operations   (12,970) (12,593) (12,074) (13,940) (13,259) (12,766) (12,632)      
Rental and other revenues, as adjusted   150,766 148,543 145,236 140,724 139,370 139,956 135,821      
Income from continuing operations, as reported   31,617 26,891 20,835 23,585 54,299 24,512 13,192      
Discontinued operations   (4,265) (4,670) (3,915) (5,434) (4,816) (4,138) (4,213)      
Income from continuing operations, as adjusted   27,352 22,221 16,920 18,151 49,483 20,374 8,979      
Income from discontinued operations, as reported   0 0 0 0 0 0 384      
Additional discontinued operations from properties sold subsequent to the respective reporting period   4,265 4,670 3,915 5,434 4,816 4,138 4,213      
Total income from discontinued operations   4,265 4,670 3,915 5,434 4,816 4,138 4,597      
Highwoods Realty Limited Partnership [Member]                      
Quarterly Financial Data [Line Items]                      
Rental and other revenues 160,126 [2] 150,766 [2] 148,543 [2] 145,236 [2] 140,724 [2] 139,370 [2] 139,956 [2] 135,821 [2] 604,671 555,871 505,008
Income from continuing operations 19,028 [2] 27,352 [2] 22,221 [2] 16,920 [2] 18,151 [2] 49,483 [2] 20,374 [2] 8,979 [2] 85,521 96,987 42,590
Total income from discontinued operations 2,889 [2] 4,265 [2] 4,670 [2] 3,915 [2] 5,434 [2] 4,816 [2] 4,138 [2] 4,597 [2] 15,739 18,985 88,456
Net income 21,917 31,617 26,891 20,835 23,585 54,299 24,512 13,576 101,260 115,972 131,046
Net (income) attributable to noncontrolling interests in consolidated affiliates (316) (324) (328) (296) (314) (291) (438) (423) (1,264) (1,466) (949)
Distributions on Preferred Units (627) (626) (626) (627) (626) (627) (627) (627) (2,506) (2,507) (2,508)
Net income available for common unitholders $ 20,974 $ 30,667 $ 25,937 $ 19,912 $ 22,645 $ 53,381 $ 23,447 $ 12,526 $ 97,490 $ 111,999 $ 127,589
Earnings per Common Unit - basic:                      
Income from continuing operations available for common unitholders (in dollars per share) $ 0.18 $ 0.27 $ 0.22 $ 0.17 $ 0.18 $ 0.52 $ 0.21 $ 0.09 $ 0.84 $ 1.00 $ 0.44
Income from discontinued operations available for common unitholders (in dollars per share) 0.03 0.05 0.05 0.04 0.06 0.05 0.04 0.05 0.17 0.20 1.00
Net income available for common unitholders (in dollars per share) 0.21 0.32 0.27 0.21 0.24 0.57 0.25 0.14 1.01 1.20 1.44
Earnings per Common Unit - diluted:                      
Income from continuing operations available for common unitholders (in dollars per share) 0.18 0.27 0.22 0.17 0.18 0.52 0.21 0.09 0.84 1.00 0.44
Income from discontinued operations available for common unitholders (in dollars per share) 0.03 0.05 0.05 0.04 0.06 0.05 0.04 0.05 0.17 0.20 1.00
Net income available for common unitholders (in dollars per share) $ 0.21 $ 0.32 $ 0.27 $ 0.21 $ 0.24 $ 0.57 $ 0.25 $ 0.14 $ 1.01 $ 1.20 $ 1.44
Continuing Operations Reconciliation To Previous Reported Amounts [Abstract]                      
Rental and other revenues, as reported   $ 163,736 $ 161,136 $ 157,310 $ 154,664 $ 152,629 $ 152,722 $ 148,453      
Discontinued operations   (12,970) (12,593) (12,074) (13,940) (13,259) (12,766) (12,632)      
Rental and other revenues, as adjusted $ 160,126 [2] 150,766 [2] 148,543 [2] 145,236 [2] 140,724 [2] 139,370 [2] 139,956 [2] 135,821 [2] $ 604,671 $ 555,871 $ 505,008
Income from continuing operations, as reported   31,617 26,891 20,835 23,585 54,299 24,512 13,192      
Discontinued operations   (4,265) (4,670) (3,915) (5,434) (4,816) (4,138) (4,213)      
Income from continuing operations, as adjusted 19,028 [2] 27,352 [2] 22,221 [2] 16,920 [2] 18,151 [2] 49,483 [2] 20,374 [2] 8,979 [2] 85,521 96,987 42,590
Income from discontinued operations, as reported   0 0 0 0 0 0 384      
Additional discontinued operations from properties sold subsequent to the respective reporting period   4,265 4,670 3,915 5,434 4,816 4,138 4,213      
Total income from discontinued operations $ 2,889 [2] $ 4,265 [2] $ 4,670 [2] $ 3,915 [2] $ 5,434 [2] $ 4,816 [2] $ 4,138 [2] $ 4,597 [2] $ 15,739 $ 18,985 $ 88,456
[1] As a result of discontinued operations, the amounts presented may not equal the amounts previously reported in the most recent Form 10-Qs or prior 10-K for each period. Below is a reconciliation to the amounts previously reported: Quarter Ended March 31, June 30, September 30, 2015 2015 2015Rental and other revenues, as reported$157,310 $161,136 $163,736Discontinued operations(12,074) (12,593) (12,970)Rental and other revenues, as adjusted$145,236 $148,543 $150,766Income from continuing operations, as reported$20,835 $26,891 $31,617Discontinued operations(3,915) (4,670) (4,265)Income from continuing operations, as adjusted$16,920 $22,221 $27,352Income from discontinued operations, as reported$— $— $—Additional discontinued operations from properties sold subsequent to the respective reporting period3,915 4,670 4,265Income from discontinued operations, as adjusted$3,915 $4,670 $4,265 Quarter Ended March 31, June 30, September 30, December 31, 2014 2014 2014 2014Rental and other revenues, as reported$148,453 $152,722 $152,629 $154,664Discontinued operations(12,632) (12,766) (13,259) (13,940)Rental and other revenues, as adjusted$135,821 $139,956 $139,370 $140,724Income from continuing operations, as reported$13,192 $24,512 $54,299 $23,585Discontinued operations(4,213) (4,138) (4,816) (5,434)Income from continuing operations, as adjusted$8,979 $20,374 $49,483 $18,151Income from discontinued operations, as reported$384 $— $— $—Additional discontinued operations from properties sold subsequent to the respective reporting period4,213 4,138 4,816 5,434Income from discontinued operations, as adjusted$4,597 $4,138 $4,816 $5,434
[2] As a result of discontinued operations, the amounts presented may not equal the amounts previously reported in the most recent Form 10-Qs or prior 10-K for each period. Below is a reconciliation to the amounts previously reported: Quarter Ended March 31, June 30, September 30, 2015 2015 2015Rental and other revenues, as reported$157,310 $161,136 $163,736Discontinued operations(12,074) (12,593) (12,970)Rental and other revenues, as adjusted$145,236 $148,543 $150,766Income from continuing operations, as reported$20,835 $26,891 $31,617Discontinued operations(3,915) (4,670) (4,265)Income from continuing operations, as adjusted$16,920 $22,221 $27,352Income from discontinued operations, as reported$— $— $—Additional discontinued operations from properties sold subsequent to the respective reporting period3,915 4,670 4,265Income from discontinued operations, as adjusted$3,915 $4,670 $4,265 Quarter Ended March 31, June 30, September 30, December 31, 2014 2014 2014 2014Rental and other revenues, as reported$148,453 $152,722 $152,629 $154,664Discontinued operations(12,632) (12,766) (13,259) (13,940)Rental and other revenues, as adjusted$135,821 $139,956 $139,370 $140,724Income from continuing operations, as reported$13,192 $24,512 $54,299 $23,585Discontinued operations(4,213) (4,138) (4,816) (5,434)Income from continuing operations, as adjusted$8,979 $20,374 $49,483 $18,151Income from discontinued operations, as reported$384 $— $— $—Additional discontinued operations from properties sold subsequent to the respective reporting period4,213 4,138 4,816 5,434Income from discontinued operations, as adjusted$4,597 $4,138 $4,816 $5,434
v3.3.1.900
Subsequent Events (Details)
$ in Thousands
 1 Months Ended 12 Months Ended
Jan. 04, 2016
USD ($)
ft²
property
Jan. 29, 2016
USD ($)
ft²
Dec. 31, 2015
USD ($)
ft²
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Subsequent Event [Line Items]          
Rentable square feet of commercial real estate (in square feet)     32,486,000    
Rentable square feet of commercial real estate under development (in square feet)     1,454,200    
Gains on disposition of property | $     $ 11,444 $ 44,352 $ (3)
Closure of Division Office [Member] | Subsequent Event [Member]          
Subsequent Event [Line Items]          
Purchase price of real estate | $ $ 660,000        
Number of buildings sold | property 18        
Earnest money deposit for purchase of real estate | $ $ 25,000        
Contract default payment for purchase of real estate | $ $ 25,000        
Related Party Transaction [Member] | Subsequent Event [Member]          
Subsequent Event [Line Items]          
Purchase price of real estate | $   $ 4,700      
Percentage of building currently leased by buyer (in hundredths)   79.00%      
Gains on disposition of property | $   $ 1,000      
Office Property [Member]          
Subsequent Event [Line Items]          
Rentable square feet of commercial real estate (in square feet)     468,000    
Office Property [Member] | Closure of Division Office [Member] | Subsequent Event [Member]          
Subsequent Event [Line Items]          
Rentable square feet of commercial real estate (in square feet) 468,000        
Office Property [Member] | Related Party Transaction [Member] | Subsequent Event [Member]          
Subsequent Event [Line Items]          
Rentable square feet of commercial real estate (in square feet)   32,000      
Retail Property [Member]          
Subsequent Event [Line Items]          
Rentable square feet of commercial real estate (in square feet)     776,000    
Rentable square feet of commercial real estate under development (in square feet)     28,000    
Retail Property [Member] | Closure of Division Office [Member] | Subsequent Event [Member]          
Subsequent Event [Line Items]          
Rentable square feet of commercial real estate (in square feet) 776,000        
Rentable square feet of commercial real estate under development (in square feet) 28,000        
v3.3.1.900
Schedule II (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Movement in Valuation Allowances and Reserves [Roll Forward]      
Allowance for doubtful accounts, beginning balance $ 1,905 $ 2,551 $ 3,411
Additions to allowance for doubtful accounts 2,565 2,613 1,467
Deductions to allowance for doubtful accounts (2,998) (3,259) (2,327)
Allowance for doubtful accounts, ending balance 1,472 1,905 2,551
Allowance for Doubtful Accounts - Straight Line Rent [Member]      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Allowance for doubtful accounts, beginning balance 316 601 381
Additions to allowance for doubtful accounts 1,412 1,271 496
Deductions to allowance for doubtful accounts (1,471) (1,556) (276)
Allowance for doubtful accounts, ending balance 257 316 601
Allowance for Doubtful Accounts - Accounts Receivable [Member]      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Allowance for doubtful accounts, beginning balance 1,314 1,648 2,848
Additions to allowance for doubtful accounts 1,141 1,342 851
Deductions to allowance for doubtful accounts (1,527) (1,676) (2,051)
Allowance for doubtful accounts, ending balance 928 1,314 1,648
Allowance for Doubtful Accounts - Notes Receivable [Member]      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Allowance for doubtful accounts, beginning balance 275 302 182
Additions to allowance for doubtful accounts 12 0 120
Deductions to allowance for doubtful accounts 0 (27) 0
Allowance for doubtful accounts, ending balance $ 287 $ 275 $ 302
v3.3.1.900
Schedule III (Details) - USD ($)
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,024,936,000 $ 977,074,000 $ 868,276,000 $ 1,138,378,000 $ 1,024,936,000 $ 977,074,000
Real estate assets, net, held for sale       (131,274,000) (131,419,000) (124,883,000)
Total accumulated depreciation       1,007,104,000 893,517,000 852,191,000
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 4,271,966,000 4,215,275,000 3,510,126,000 4,915,858,000 4,271,966,000 4,215,275,000
Development in process exclusive of land included in Schedule III       194,050,000 201,409,000 44,621,000
Real estate assets, net, held for sale       (340,581,000) (331,813,000) (334,722,000)
Total real estate assets       4,769,327,000 4,141,562,000 3,925,174,000
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 4,271,966,000 4,215,275,000 3,510,126,000 4,915,858,000 4,271,966,000 4,215,275,000
SEC Schedule III, Real Estate Accumulated Depreciation 1,024,936,000 977,074,000 868,276,000 1,138,378,000 $ 1,024,936,000 $ 977,074,000
SEC Schedule III, Real Estate, Federal Income Tax Basis       4,500,000,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, beginning balance 4,271,966,000 4,215,275,000 3,510,126,000      
Acquisitions, development and improvements 708,793,000 282,105,000 735,183,000      
Cost of real estate sold and retired (64,901,000) (225,414,000) (30,034,000)      
Real estate assets, ending balance 4,915,858,000 4,271,966,000 4,215,275,000      
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, beginning balance 1,024,936,000 977,074,000 868,276,000      
Depreciation expense 168,663,000 154,448,000 138,163,000      
Real estate sold and retired (55,221,000) (106,586,000) (29,365,000)      
Accumulated depreciation, ending balance 1,138,378,000 $ 1,024,936,000 $ 977,074,000      
Atlanta, GA - 1700 Century Circle [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 920,000     920,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 3,724,000     3,724,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       2,482,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       2,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,240,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       3,722,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 3,724,000     3,724,000    
SEC Schedule III, Real Estate Accumulated Depreciation 920,000     920,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 3,724,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 920,000          
Atlanta, GA - 1700 Century Circle [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - 1700 Century Circle [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - 1800 Century Boulevard [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 22,790,000     22,790,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 44,081,000     44,081,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,444,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       29,081,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       13,556,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,444,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       42,637,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 44,081,000     44,081,000    
SEC Schedule III, Real Estate Accumulated Depreciation 22,790,000     22,790,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 44,081,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 22,790,000          
Atlanta, GA - 1800 Century Boulevard [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - 1800 Century Boulevard [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - 1825 Century Center [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 5,039,000     5,039,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 15,606,000     15,606,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       864,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       303,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       14,439,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,167,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       14,439,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 15,606,000     15,606,000    
SEC Schedule III, Real Estate Accumulated Depreciation 5,039,000     5,039,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 15,606,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 5,039,000          
Atlanta, GA - 1825 Century Center [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - 1825 Century Center [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - 1875 Century Boulevard [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 4,878,000     4,878,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 13,355,000     13,355,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       8,924,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       4,431,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       13,355,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 13,355,000     13,355,000    
SEC Schedule III, Real Estate Accumulated Depreciation 4,878,000     4,878,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 13,355,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 4,878,000          
Atlanta, GA - 1875 Century Boulevard [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - 1875 Century Boulevard [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - 1900 Century Boulevard [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,793,000     2,793,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 5,515,000     5,515,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       4,744,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       771,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       5,515,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 5,515,000     5,515,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,793,000     2,793,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 5,515,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,793,000          
Atlanta, GA - 1900 Century Boulevard [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - 1900 Century Boulevard [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - 2200 Century Parkway [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 9,069,000     9,069,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 18,998,000     18,998,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       14,432,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       4,566,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       18,998,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 18,998,000     18,998,000    
SEC Schedule III, Real Estate Accumulated Depreciation 9,069,000     9,069,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 18,998,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 9,069,000          
Atlanta, GA - 2200 Century Parkway [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - 2200 Century Parkway [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - 2400 Century Center [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 5,532,000     5,532,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 13,136,000     13,136,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       406,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       12,730,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       406,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       12,730,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 13,136,000     13,136,000    
SEC Schedule III, Real Estate Accumulated Depreciation 5,532,000     5,532,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 13,136,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 5,532,000          
Atlanta, GA - 2400 Century Center [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - 2400 Century Center [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - 2500 Century Center [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 5,577,000     5,577,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 14,751,000     14,751,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       328,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       14,423,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       328,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       14,423,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 14,751,000     14,751,000    
SEC Schedule III, Real Estate Accumulated Depreciation 5,577,000     5,577,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 14,751,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 5,577,000          
Atlanta, GA - 2500 Century Center [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - 2500 Century Center [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - 2500/2635 Parking Garage [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,592,000     1,592,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 6,317,000     6,317,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       6,317,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       6,317,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 6,317,000     6,317,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,592,000     1,592,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 6,317,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,592,000          
Atlanta, GA - 2500/2635 Parking Garage [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - 2500/2635 Parking Garage [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - 2600 Century Parkway [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 7,819,000     7,819,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 14,641,000     14,641,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       10,679,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,962,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       14,641,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 14,641,000     14,641,000    
SEC Schedule III, Real Estate Accumulated Depreciation 7,819,000     7,819,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 14,641,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 7,819,000          
Atlanta, GA - 2600 Century Parkway [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - 2600 Century Parkway [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - 2635 Century Parkway [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 11,767,000     11,767,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 25,782,000     25,782,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       21,643,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       4,139,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       25,782,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 25,782,000     25,782,000    
SEC Schedule III, Real Estate Accumulated Depreciation 11,767,000     11,767,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 25,782,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 11,767,000          
Atlanta, GA - 2635 Century Parkway [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - 2635 Century Parkway [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - 2800 Century Parkway [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 13,102,000     13,102,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 32,325,000     32,325,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       20,449,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       11,876,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       32,325,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 32,325,000     32,325,000    
SEC Schedule III, Real Estate Accumulated Depreciation 13,102,000     13,102,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 32,325,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 13,102,000          
Atlanta, GA - 2800 Century Parkway [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - 2800 Century Parkway [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - 50 Glenlake [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 10,569,000     10,569,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 25,997,000     25,997,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,500,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       20,006,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,491,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,500,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       23,497,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 25,997,000     25,997,000    
SEC Schedule III, Real Estate Accumulated Depreciation 10,569,000     10,569,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 25,997,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 10,569,000          
Atlanta, GA - 50 Glenlake [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - 50 Glenlake [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - Bluegrass Valley Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 2,416,000     2,416,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       19,711,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (17,295,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,416,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 2,416,000     2,416,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 2,416,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Atlanta, GA - Century Plaza I [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 5,171,000     5,171,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 14,048,000     14,048,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,290,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       8,567,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       4,191,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,290,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       12,758,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 14,048,000     14,048,000    
SEC Schedule III, Real Estate Accumulated Depreciation 5,171,000     5,171,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 14,048,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 5,171,000          
Atlanta, GA - Century Plaza I [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - Century Plaza I [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - Century Plaza II [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 4,154,000     4,154,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 11,918,000     11,918,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,380,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       7,733,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,805,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,380,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       10,538,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 11,918,000     11,918,000    
SEC Schedule III, Real Estate Accumulated Depreciation 4,154,000     4,154,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 11,918,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 4,154,000          
Atlanta, GA - Century Plaza II [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - Century Plaza II [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - Federal Aviation Administration [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 4,015,000     4,015,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 17,800,000     17,800,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,196,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       1,416,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       15,188,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,612,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       15,188,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 17,800,000     17,800,000    
SEC Schedule III, Real Estate Accumulated Depreciation 4,015,000     4,015,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 17,800,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 4,015,000          
Atlanta, GA - Federal Aviation Administration [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - Federal Aviation Administration [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - Henry County Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 3,023,000     3,023,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       3,010,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       13,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       3,023,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 3,023,000     3,023,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 3,023,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Atlanta, GA - Highwoods Center III at Tradeport [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 1,126,000     1,126,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 4,579,000     4,579,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       409,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       130,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       4,040,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       539,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       4,040,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 4,579,000     4,579,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,126,000     1,126,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 4,579,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,126,000          
Atlanta, GA - Highwoods Center III at Tradeport [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - Highwoods Center III at Tradeport [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - 5405 Windward Parkway [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 15,765,000     15,765,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 54,169,000     54,169,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       3,342,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       32,111,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       18,716,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       3,342,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       50,827,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 54,169,000     54,169,000    
SEC Schedule III, Real Estate Accumulated Depreciation 15,765,000     15,765,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 54,169,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 15,765,000          
Atlanta, GA - 5405 Windward Parkway [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - 5405 Windward Parkway [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - River Point Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 391,000     391,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 13,712,000     13,712,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       7,250,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       3,913,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,549,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       11,163,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       2,549,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 13,712,000     13,712,000    
SEC Schedule III, Real Estate Accumulated Depreciation 391,000     391,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 13,712,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 391,000          
Atlanta, GA - River Point Land [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - River Point Land [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - Riverwood 100 [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 10,357,000     10,357,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 82,606,000     82,606,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       5,785,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       64,913,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (29,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       11,937,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       5,756,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       76,850,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 82,606,000     82,606,000    
SEC Schedule III, Real Estate Accumulated Depreciation 10,357,000     10,357,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 82,606,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 10,357,000          
Atlanta, GA - Riverwood 100 [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - Riverwood 100 [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - South Park Residential Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 57,000     57,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       50,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       7,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       57,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 57,000     57,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 57,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Atlanta, GA - South Park Site Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 1,958,000     1,958,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,204,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       754,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,958,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 1,958,000     1,958,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 1,958,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Atlanta, GA - Tradeport Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 684,000     684,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       5,243,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (4,559,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       684,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 684,000     684,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 684,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Atlanta, GA - Two Point Royal [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 7,722,000     7,722,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 20,055,000     20,055,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,793,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       14,964,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,298,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,793,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       18,262,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 20,055,000     20,055,000    
SEC Schedule III, Real Estate Accumulated Depreciation 7,722,000     7,722,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 20,055,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 7,722,000          
Atlanta, GA - Two Point Royal [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - Two Point Royal [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - Two Alliance Center [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 16,372,000     16,372,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 138,478,000     138,478,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       9,579,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       125,549,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,350,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       9,579,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       128,899,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 138,478,000     138,478,000    
SEC Schedule III, Real Estate Accumulated Depreciation 16,372,000     16,372,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 138,478,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 16,372,000          
Atlanta, GA - Two Alliance Center [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - Two Alliance Center [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - One Alliance Center [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 11,405,000     11,405,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 148,256,000     148,256,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       14,775,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       123,071,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       10,410,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       14,775,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       133,481,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 148,256,000     148,256,000    
SEC Schedule III, Real Estate Accumulated Depreciation 11,405,000     11,405,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 148,256,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 11,405,000          
Atlanta, GA - One Alliance Center [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - One Alliance Center [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - 10 Glenlake North [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,693,000     3,693,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 32,321,000     32,321,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       5,349,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       26,334,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       638,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       5,349,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       26,972,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 32,321,000     32,321,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,693,000     3,693,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 32,321,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,693,000          
Atlanta, GA - 10 Glenlake North [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - 10 Glenlake North [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - 10 Glenlake South [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,468,000     2,468,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 30,351,000     30,351,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       5,103,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       22,811,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,437,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       5,103,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       25,248,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 30,351,000     30,351,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,468,000     2,468,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 30,351,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,468,000          
Atlanta, GA - 10 Glenlake South [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - 10 Glenlake South [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - Riverwood 300 Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 400,000     400,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       400,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       400,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 400,000     400,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 400,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Atlanta, GA - Monarch Tower [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 2,090,000     2,090,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 165,785,000     165,785,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       22,717,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       143,068,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       22,717,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       143,068,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 165,785,000     165,785,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,090,000     2,090,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 165,785,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,090,000          
Atlanta, GA - Monarch Tower [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - Monarch Tower [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Atlanta, GA - Monarch Plaza [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,191,000     1,191,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 116,640,000     116,640,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       27,678,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       88,962,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       27,678,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       88,962,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 116,640,000     116,640,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,191,000     1,191,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 116,640,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,191,000          
Atlanta, GA - Monarch Plaza [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Atlanta, GA - Monarch Plaza [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Kansas City, MO - Country Club Plaza [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 117,945,000     117,945,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 300,863,000     300,863,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       14,286,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       146,879,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (198,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       139,896,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       14,088,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       286,775,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 300,863,000     300,863,000    
SEC Schedule III, Real Estate Accumulated Depreciation 117,945,000     117,945,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 300,863,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 117,945,000          
Kansas City, MO - Country Club Plaza [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Kansas City, MO - Country Club Plaza [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Kansas City, MO - Land - Hotel Land - Valencia [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 1,089,000     1,089,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       978,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       111,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,089,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 1,089,000     1,089,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 1,089,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Kansas City, MO - Park Plaza Building [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 3,713,000     3,713,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 10,636,000     10,636,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,384,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       6,410,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,842,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,384,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       9,252,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 10,636,000     10,636,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,713,000     3,713,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 10,636,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,713,000          
Kansas City, MO - Park Plaza Building [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Kansas City, MO - Park Plaza Building [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Kansas City, MO - Two Emmanuel Cleaver Boulevard [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,930,000     2,930,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 7,578,000     7,578,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       984,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       4,402,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,192,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       984,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       6,594,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,578,000     7,578,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,930,000     2,930,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 7,578,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,930,000          
Kansas City, MO - Two Emmanuel Cleaver Boulevard [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Kansas City, MO - Two Emmanuel Cleaver Boulevard [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Kansas City, MO - Valencia Place Office [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 12,519,000     12,519,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 36,816,000     36,816,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,576,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       970,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       34,270,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,546,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       34,270,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 36,816,000     36,816,000    
SEC Schedule III, Real Estate Accumulated Depreciation 12,519,000     12,519,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 36,816,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 12,519,000          
Kansas City, MO - Valencia Place Office [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Kansas City, MO - Valencia Place Office [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Memphis, TN - 3400 Players Club Parkway [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,533,000     2,533,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 7,433,000     7,433,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,005,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       207,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       6,221,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,212,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       6,221,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,433,000     7,433,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,533,000     2,533,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 7,433,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,533,000          
Memphis, TN - 3400 Players Club Parkway [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Memphis, TN - 3400 Players Club Parkway [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Memphis, TN - Triad Centre I [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 6,467,000     6,467,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 17,539,000     17,539,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,340,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       11,385,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (849,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       4,663,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,491,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       16,048,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 17,539,000     17,539,000    
SEC Schedule III, Real Estate Accumulated Depreciation 6,467,000     6,467,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 17,539,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 6,467,000          
Memphis, TN - Triad Centre I [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Memphis, TN - Triad Centre I [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Memphis, TN - Triad Centre II [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 4,634,000     4,634,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 14,817,000     14,817,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,980,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       8,677,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (404,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       4,564,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,576,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       13,241,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 14,817,000     14,817,000    
SEC Schedule III, Real Estate Accumulated Depreciation 4,634,000     4,634,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 14,817,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 4,634,000          
Memphis, TN - Triad Centre II [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Memphis, TN - Triad Centre II [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Memphis, TN - Atrium I & II [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 4,245,000     4,245,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 10,773,000     10,773,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,570,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       6,253,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,950,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,570,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       9,203,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 10,773,000     10,773,000    
SEC Schedule III, Real Estate Accumulated Depreciation 4,245,000     4,245,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 10,773,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 4,245,000          
Memphis, TN - Atrium I & II [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Memphis, TN - Atrium I & II [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Memphis, TN - Centrum [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 4,030,000     4,030,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 9,156,000     9,156,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,013,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       5,580,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,563,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,013,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       8,143,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 9,156,000     9,156,000    
SEC Schedule III, Real Estate Accumulated Depreciation 4,030,000     4,030,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 9,156,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 4,030,000          
Memphis, TN - Centrum [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Memphis, TN - Centrum [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Memphis, TN - Comcast [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,036,000     3,036,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 9,566,000     9,566,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       946,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       8,620,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       946,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       8,620,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 9,566,000     9,566,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,036,000     3,036,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 9,566,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,036,000          
Memphis, TN - Comcast [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Memphis, TN - Comcast [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Memphis, TN - International Place Phase II [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 15,842,000     15,842,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 37,893,000     37,893,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       4,884,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       27,782,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       5,227,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       4,884,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       33,009,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 37,893,000     37,893,000    
SEC Schedule III, Real Estate Accumulated Depreciation 15,842,000     15,842,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 37,893,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 15,842,000          
Memphis, TN - International Place Phase II [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Memphis, TN - International Place Phase II [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Memphis, TN - PennMarc Centre [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,094,000     3,094,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 16,855,000     16,855,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       3,607,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       10,240,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,008,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       3,607,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       13,248,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 16,855,000     16,855,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,094,000     3,094,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 16,855,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,094,000          
Memphis, TN - PennMarc Centre [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Memphis, TN - PennMarc Centre [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Memphis, TN - Shadow Creek I [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,710,000     2,710,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 8,692,000     8,692,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       924,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       466,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       7,302,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,390,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       7,302,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 8,692,000     8,692,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,710,000     2,710,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 8,692,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,710,000          
Memphis, TN - Shadow Creek I [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Memphis, TN - Shadow Creek I [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Memphis, TN - Shadow Creek II [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,521,000     2,521,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 8,102,000     8,102,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       734,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       467,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       6,901,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,201,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       6,901,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 8,102,000     8,102,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,521,000     2,521,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 8,102,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,521,000          
Memphis, TN - Shadow Creek II [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Memphis, TN - Shadow Creek II [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Memphis, TN - Southwind Office Center A [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,337,000     3,337,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 8,284,000     8,284,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,004,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       5,694,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       282,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,304,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,286,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       6,998,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 8,284,000     8,284,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,337,000     3,337,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 8,284,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,337,000          
Memphis, TN - Southwind Office Center A [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Memphis, TN - Southwind Office Center A [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Memphis, TN - Southwind Office Center B [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 4,321,000     4,321,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 10,381,000     10,381,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,366,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       7,754,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,261,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,366,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       9,015,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 10,381,000     10,381,000    
SEC Schedule III, Real Estate Accumulated Depreciation 4,321,000     4,321,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 10,381,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 4,321,000          
Memphis, TN - Southwind Office Center B [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Memphis, TN - Southwind Office Center B [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Memphis, TN - Southwind Office Center C [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,396,000     2,396,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 6,646,000     6,646,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,070,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       221,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       5,355,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,291,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       5,355,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 6,646,000     6,646,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,396,000     2,396,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 6,646,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,396,000          
Memphis, TN - Southwind Office Center C [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Memphis, TN - Southwind Office Center C [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Memphis, TN - Southwind Office Center D [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,316,000     2,316,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 6,576,000     6,576,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       744,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       193,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       5,639,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       937,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       5,639,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 6,576,000     6,576,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,316,000     2,316,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 6,576,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,316,000          
Memphis, TN - Southwind Office Center D [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Memphis, TN - Southwind Office Center D [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Memphis, TN - Colonnade [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,343,000     3,343,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 10,274,000     10,274,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,300,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       6,481,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       267,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,226,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,567,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       8,707,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 10,274,000     10,274,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,343,000     3,343,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 10,274,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,343,000          
Memphis, TN - Colonnade [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Memphis, TN - Colonnade [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Memphis, TN - ThyssenKrupp Elevator Mfg Headquarters [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,298,000     3,298,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 9,407,000     9,407,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,040,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       25,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       8,342,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,065,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       8,342,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 9,407,000     9,407,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,298,000     3,298,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 9,407,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,298,000          
Memphis, TN - ThyssenKrupp Elevator Mfg Headquarters [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Memphis, TN - ThyssenKrupp Elevator Mfg Headquarters [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Memphis, TN - Crescent Center [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 7,410,000     7,410,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 48,858,000     48,858,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       7,875,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       32,756,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (547,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       8,774,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       7,328,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       41,530,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 48,858,000     48,858,000    
SEC Schedule III, Real Estate Accumulated Depreciation 7,410,000     7,410,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 48,858,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 7,410,000          
Memphis, TN - Crescent Center [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Memphis, TN - Crescent Center [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Memphis, TN - Southwind Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 2,185,000     2,185,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       3,662,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (1,477,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,185,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 2,185,000     2,185,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 2,185,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Memphis, TN - Triad Center III [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 7,136,000     7,136,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 38,048,000     38,048,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,253,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       36,795,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,253,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       36,795,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 38,048,000     38,048,000    
SEC Schedule III, Real Estate Accumulated Depreciation 7,136,000     7,136,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 38,048,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 7,136,000          
Memphis, TN - Triad Center III [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Memphis, TN - Triad Center III [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Memphis, TN - Capital Grille [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 506,000     506,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 3,569,000     3,569,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       311,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,258,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       311,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       3,258,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 3,569,000     3,569,000    
SEC Schedule III, Real Estate Accumulated Depreciation 506,000     506,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 3,569,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 506,000          
Memphis, TN - Capital Grille [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Memphis, TN - Capital Grille [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Memphis, TN - Seasons 52 [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 570,000     570,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 4,061,000     4,061,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       320,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,741,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       320,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       3,741,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 4,061,000     4,061,000    
SEC Schedule III, Real Estate Accumulated Depreciation 570,000     570,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 4,061,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 570,000          
Memphis, TN - Seasons 52 [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Memphis, TN - Seasons 52 [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Memphis, TN - International Place IV [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,124,000     1,124,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 54,081,000     54,081,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       4,940,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       49,141,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       4,940,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       49,141,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 54,081,000     54,081,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,124,000     1,124,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 54,081,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,124,000          
Memphis, TN - International Place IV [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Memphis, TN - International Place IV [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - 3322 West End [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 12,830,000     12,830,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 34,173,000     34,173,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       3,025,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       27,490,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,658,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       3,025,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       31,148,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 34,173,000     34,173,000    
SEC Schedule III, Real Estate Accumulated Depreciation 12,830,000     12,830,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 34,173,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 12,830,000          
Nashville, TN - 3322 West End [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - 3322 West End [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - 3401 West End [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 13,300,000     13,300,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 32,181,000     32,181,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       5,862,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       22,917,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,402,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       5,862,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       26,319,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 32,181,000     32,181,000    
SEC Schedule III, Real Estate Accumulated Depreciation 13,300,000     13,300,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 32,181,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 13,300,000          
Nashville, TN - 3401 West End [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - 3401 West End [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - 5310 Maryland Way [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 4,037,000     4,037,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 12,715,000     12,715,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,863,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       7,201,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,651,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,863,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       10,852,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 12,715,000     12,715,000    
SEC Schedule III, Real Estate Accumulated Depreciation 4,037,000     4,037,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 12,715,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 4,037,000          
Nashville, TN - 5310 Maryland Way [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - 5310 Maryland Way [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - Cool Springs 1 & 2 Deck [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 809,000     809,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 3,989,000     3,989,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,989,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       3,989,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 3,989,000     3,989,000    
SEC Schedule III, Real Estate Accumulated Depreciation 809,000     809,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 3,989,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 809,000          
Nashville, TN - Cool Springs 1 & 2 Deck [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - Cool Springs 1 & 2 Deck [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - Cool Springs 3 &4 Deck [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 969,000     969,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 4,461,000     4,461,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       4,461,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       4,461,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 4,461,000     4,461,000    
SEC Schedule III, Real Estate Accumulated Depreciation 969,000     969,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 4,461,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 969,000          
Nashville, TN - Cool Springs 3 &4 Deck [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - Cool Springs 3 &4 Deck [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - Cool Springs I [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 5,571,000     5,571,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 15,667,000     15,667,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,583,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       15,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       14,069,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,598,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       14,069,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 15,667,000     15,667,000    
SEC Schedule III, Real Estate Accumulated Depreciation 5,571,000     5,571,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 15,667,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 5,571,000          
Nashville, TN - Cool Springs I [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - Cool Springs I [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - Cool Springs II [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 6,413,000     6,413,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 19,996,000     19,996,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,824,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       346,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       17,826,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,170,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       17,826,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 19,996,000     19,996,000    
SEC Schedule III, Real Estate Accumulated Depreciation 6,413,000     6,413,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 19,996,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 6,413,000          
Nashville, TN - Cool Springs II [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - Cool Springs II [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - Cool Springs III [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,809,000     3,809,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 18,037,000     18,037,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,631,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       804,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       15,602,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,435,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       15,602,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 18,037,000     18,037,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,809,000     3,809,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 18,037,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,809,000          
Nashville, TN - Cool Springs III [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - Cool Springs III [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - Cool Springs IV [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,785,000     3,785,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 21,018,000     21,018,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,715,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       19,303,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,715,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       19,303,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 21,018,000     21,018,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,785,000     3,785,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 21,018,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,785,000          
Nashville, TN - Cool Springs IV [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - Cool Springs IV [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - Cool Springs V Healthways [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 13,966,000     13,966,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 56,942,000     56,942,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       3,688,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       295,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       52,959,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       3,983,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       52,959,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 56,942,000     56,942,000    
SEC Schedule III, Real Estate Accumulated Depreciation 13,966,000     13,966,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 56,942,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 13,966,000          
Nashville, TN - Cool Springs V Healthways [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - Cool Springs V Healthways [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - Harpeth on the Green II [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,857,000     3,857,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 9,051,000     9,051,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,419,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       5,677,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,955,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,419,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       7,632,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 9,051,000     9,051,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,857,000     3,857,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 9,051,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,857,000          
Nashville, TN - Harpeth on the Green II [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - Harpeth on the Green II [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - Harpeth on the Green III [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,852,000     3,852,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 10,531,000     10,531,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,660,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       6,649,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,222,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,660,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       8,871,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 10,531,000     10,531,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,852,000     3,852,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 10,531,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,852,000          
Nashville, TN - Harpeth on the Green III [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - Harpeth on the Green III [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - Harpeth on the Green IV [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 4,028,000     4,028,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 10,229,000     10,229,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,713,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       6,842,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,674,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,713,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       8,516,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 10,229,000     10,229,000    
SEC Schedule III, Real Estate Accumulated Depreciation 4,028,000     4,028,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 10,229,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 4,028,000          
Nashville, TN - Harpeth on the Green IV [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - Harpeth on the Green IV [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - Harpeth on The Green V [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,090,000     2,090,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 6,286,000     6,286,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       662,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       197,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       5,427,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       859,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       5,427,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 6,286,000     6,286,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,090,000     2,090,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 6,286,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,090,000          
Nashville, TN - Harpeth on The Green V [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - Harpeth on The Green V [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - Hickory Trace [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,568,000     1,568,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 5,801,000     5,801,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,164,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       164,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       4,473,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,328,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       4,473,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 5,801,000     5,801,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,568,000     1,568,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 5,801,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,568,000          
Nashville, TN - Hickory Trace [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - Hickory Trace [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - Highwoods Plaza I [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 4,192,000     4,192,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 10,703,000     10,703,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,552,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       307,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       8,844,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,859,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       8,844,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 10,703,000     10,703,000    
SEC Schedule III, Real Estate Accumulated Depreciation 4,192,000     4,192,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 10,703,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 4,192,000          
Nashville, TN - Highwoods Plaza I [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - Highwoods Plaza I [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - Highwoods Plaza II [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,953,000     2,953,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 10,560,000     10,560,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,448,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       307,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       8,805,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,755,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       8,805,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 10,560,000     10,560,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,953,000     2,953,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 10,560,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,953,000          
Nashville, TN - Highwoods Plaza II [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - Highwoods Plaza II [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - Seven Springs - Land II [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 0     0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       3,715,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (3,715,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 0     0    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 0          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Nashville, TN - Seven Springs I [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 4,181,000     4,181,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 14,995,000     14,995,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,076,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       592,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       12,327,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,668,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       12,327,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 14,995,000     14,995,000    
SEC Schedule III, Real Estate Accumulated Depreciation 4,181,000     4,181,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 14,995,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 4,181,000          
Nashville, TN - Seven Springs I [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - Seven Springs I [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - SouthPointe [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,031,000     3,031,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 8,987,000     8,987,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,655,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       310,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       7,022,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,965,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       7,022,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 8,987,000     8,987,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,031,000     3,031,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 8,987,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,031,000          
Nashville, TN - SouthPointe [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - SouthPointe [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - The Ramparts of Brentwood [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 6,485,000     6,485,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 17,614,000     17,614,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,394,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       12,806,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,414,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,394,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       15,220,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 17,614,000     17,614,000    
SEC Schedule III, Real Estate Accumulated Depreciation 6,485,000     6,485,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 17,614,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 6,485,000          
Nashville, TN - The Ramparts of Brentwood [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - The Ramparts of Brentwood [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - Westwood South [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,756,000     3,756,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 12,735,000     12,735,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,106,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       382,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       10,247,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,488,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       10,247,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 12,735,000     12,735,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,756,000     3,756,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 12,735,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,756,000          
Nashville, TN - Westwood South [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - Westwood South [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - 100 Winners Circle [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 4,124,000     4,124,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 10,679,000     10,679,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,497,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       7,258,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,924,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,497,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       9,182,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 10,679,000     10,679,000    
SEC Schedule III, Real Estate Accumulated Depreciation 4,124,000     4,124,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 10,679,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 4,124,000          
Nashville, TN - 100 Winners Circle [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - 100 Winners Circle [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - The Pinnacle at Symphony Place [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 12,358,000     12,358,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 147,217,000     147,217,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       141,469,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       5,748,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       147,217,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 147,217,000     147,217,000    
SEC Schedule III, Real Estate Accumulated Depreciation 12,358,000     12,358,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 147,217,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 12,358,000          
Nashville, TN - The Pinnacle at Symphony Place [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - The Pinnacle at Symphony Place [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - Seven Springs East [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,529,000     2,529,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 40,112,000     40,112,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       2,525,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       37,587,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,525,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       37,587,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 40,112,000     40,112,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,529,000     2,529,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 40,112,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,529,000          
Nashville, TN - Seven Springs East [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - Seven Springs East [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Nashville, TN - The Shops at Seven Springs [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 674,000     674,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 9,026,000     9,026,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       803,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       8,223,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       803,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       8,223,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 9,026,000     9,026,000    
SEC Schedule III, Real Estate Accumulated Depreciation 674,000     674,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 9,026,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 674,000          
Nashville, TN - The Shops at Seven Springs [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Nashville, TN - The Shops at Seven Springs [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Orlando, FL - Berkshire at MetroCenter [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,969,000     2,969,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 13,747,000     13,747,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,265,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       672,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       11,810,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,937,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       11,810,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 13,747,000     13,747,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,969,000     2,969,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 13,747,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,969,000          
Orlando, FL - Berkshire at MetroCenter [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Orlando, FL - Berkshire at MetroCenter [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Orlando, FL - Capital Plaza III Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 3,012,000     3,012,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,994,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       18,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       3,012,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 3,012,000     3,012,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 3,012,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Orlando, FL - Eola Park Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 2,027,000     2,027,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,027,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,027,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 2,027,000     2,027,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 2,027,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Orlando, FL - Oxford Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 1,151,000     1,151,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,100,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       51,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,151,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 1,151,000     1,151,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 1,151,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Orlando, FL - Stratford Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 1,886,000     1,886,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,034,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (148,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,886,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 1,886,000     1,886,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 1,886,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Orlando, FL - Windsor at Metro Center [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 2,553,000     2,553,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 10,413,000     10,413,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       2,060,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       8,353,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,060,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       8,353,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 10,413,000     10,413,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,553,000     2,553,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 10,413,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,553,000          
Orlando, FL - Windsor at Metro Center [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Orlando, FL - Windsor at Metro Center [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
South Florida - The 1800 Eller Drive Building [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 7,122,000     7,122,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 13,312,000     13,312,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       9,851,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,461,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       13,312,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 13,312,000     13,312,000    
SEC Schedule III, Real Estate Accumulated Depreciation 7,122,000     7,122,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 13,312,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 7,122,000          
South Florida - The 1800 Eller Drive Building [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
South Florida - The 1800 Eller Drive Building [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Orlando - Seaside Plaza [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,368,000     3,368,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 37,561,000     37,561,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       3,893,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       29,541,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       4,127,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       3,893,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       33,668,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 37,561,000     37,561,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,368,000     3,368,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 37,561,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,368,000          
Orlando - Seaside Plaza [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Orlando - Seaside Plaza [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Orlando - Capital Plaza Two [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,822,000     3,822,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 50,231,000     50,231,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       4,346,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       43,394,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,491,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       4,346,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       45,885,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 50,231,000     50,231,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,822,000     3,822,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 50,231,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,822,000          
Orlando - Capital Plaza Two [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Orlando - Capital Plaza Two [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Orlando - Capital Plaza One [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,119,000     3,119,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 32,496,000     32,496,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       3,482,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       27,321,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,693,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       3,482,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       29,014,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 32,496,000     32,496,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,119,000     3,119,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 32,496,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,119,000          
Orlando - Capital Plaza One [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Orlando - Capital Plaza One [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Orlando - Landmark Center Two [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,545,000     2,545,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 30,353,000     30,353,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       4,743,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       22,031,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,579,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       4,743,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       25,610,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 30,353,000     30,353,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,545,000     2,545,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 30,353,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,545,000          
Orlando - Landmark Center Two [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Orlando - Landmark Center Two [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Orlando - Landmark Center One [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,345,000     2,345,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 31,893,000     31,893,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       6,207,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       22,655,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,031,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       6,207,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       25,686,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 31,893,000     31,893,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,345,000     2,345,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 31,893,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,345,000          
Orlando - Landmark Center One [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Orlando - Landmark Center One [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
South Florida - Lincoln Plaza [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,130,000     2,130,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 60,180,000     60,180,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       3,490,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       56,079,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       611,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       3,490,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       56,690,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 60,180,000     60,180,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,130,000     2,130,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 60,180,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,130,000          
South Florida - Lincoln Plaza [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
South Florida - Lincoln Plaza [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Orlando, FL - Eola [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 716,000     716,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 14,918,000     14,918,000    
Real Estate and Accumulated Depreciation [Line Items]            
Real Estate and Accumulated Depreciation, Encumbrances       19,199,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       3,758,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       11,160,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       3,758,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       11,160,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 14,918,000     14,918,000    
SEC Schedule III, Real Estate Accumulated Depreciation 716,000     716,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 14,918,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 716,000          
Orlando, FL - Eola [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Orlando, FL - Eola [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 6348 Burnt Poplar [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,660,000     1,660,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 3,878,000     3,878,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       724,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       2,900,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       254,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       724,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       3,154,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 3,878,000     3,878,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,660,000     1,660,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 3,878,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,660,000          
Greensboro, NC - 6348 Burnt Poplar [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 6348 Burnt Poplar [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 6350 Burnt Poplar [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 804,000     804,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 2,058,000     2,058,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       341,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       1,374,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       343,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       341,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       1,717,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 2,058,000     2,058,000    
SEC Schedule III, Real Estate Accumulated Depreciation 804,000     804,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 2,058,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 804,000          
Greensboro, NC - 6350 Burnt Poplar [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 6350 Burnt Poplar [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 420 Gallimore Dairy Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,006,000     1,006,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 2,514,000     2,514,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       379,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       1,516,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       619,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       379,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       2,135,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 2,514,000     2,514,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,006,000     1,006,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 2,514,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,006,000          
Greensboro, NC - 420 Gallimore Dairy Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 420 Gallimore Dairy Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 418 Gallimore Dairy Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,207,000     1,207,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 2,900,000     2,900,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       462,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       1,849,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       589,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       462,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       2,438,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 2,900,000     2,900,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,207,000     1,207,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 2,900,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,207,000          
Greensboro, NC - 418 Gallimore Dairy Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 418 Gallimore Dairy Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 416 Gallimore Dairy Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 814,000     814,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 2,032,000     2,032,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       322,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       1,293,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       417,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       322,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       1,710,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 2,032,000     2,032,000    
SEC Schedule III, Real Estate Accumulated Depreciation 814,000     814,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 2,032,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 814,000          
Greensboro, NC - 416 Gallimore Dairy Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 416 Gallimore Dairy Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 7031 Albert Pick Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,700,000     2,700,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 6,018,000     6,018,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       510,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       2,921,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,587,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       510,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       5,508,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 6,018,000     6,018,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,700,000     2,700,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 6,018,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,700,000          
Greensboro, NC - 7031 Albert Pick Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 7031 Albert Pick Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 7029 Albert Pick Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,443,000     2,443,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 5,813,000     5,813,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       739,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       3,237,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,837,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       739,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       5,074,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 5,813,000     5,813,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,443,000     2,443,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 5,813,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,443,000          
Greensboro, NC - 7029 Albert Pick Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 7029 Albert Pick Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 7025 Albert Pick Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 6,988,000     6,988,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 17,159,000     17,159,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,393,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       9,576,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       5,190,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,393,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       14,766,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 17,159,000     17,159,000    
SEC Schedule III, Real Estate Accumulated Depreciation 6,988,000     6,988,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 17,159,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 6,988,000          
Greensboro, NC - 7025 Albert Pick Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 7025 Albert Pick Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 7027 Albert Pick Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,851,000     1,851,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 6,080,000     6,080,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       850,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       699,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       4,531,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,549,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       4,531,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 6,080,000     6,080,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,851,000     1,851,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 6,080,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,851,000          
Greensboro, NC - 7027 Albert Pick Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 7027 Albert Pick Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 7009 Albert Pick Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 629,000     629,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 1,567,000     1,567,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       224,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       1,068,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       275,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       224,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       1,343,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 1,567,000     1,567,000    
SEC Schedule III, Real Estate Accumulated Depreciation 629,000     629,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 1,567,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 629,000          
Greensboro, NC - 7009 Albert Pick Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 7009 Albert Pick Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 426 Gallimore Dairy Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 542,000     542,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 2,098,000     2,098,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       465,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       380,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,253,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       845,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       1,253,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 2,098,000     2,098,000    
SEC Schedule III, Real Estate Accumulated Depreciation 542,000     542,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 2,098,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 542,000          
Greensboro, NC - 426 Gallimore Dairy Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 426 Gallimore Dairy Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 422 Gallimore Dairy Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 743,000     743,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 1,603,000     1,603,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       145,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       1,081,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       377,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       145,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       1,458,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 1,603,000     1,603,000    
SEC Schedule III, Real Estate Accumulated Depreciation 743,000     743,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 1,603,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 743,000          
Greensboro, NC - 422 Gallimore Dairy Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 422 Gallimore Dairy Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 406 Gallimore Dairy Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 471,000     471,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 1,446,000     1,446,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       265,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       270,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       911,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       535,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       911,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 1,446,000     1,446,000    
SEC Schedule III, Real Estate Accumulated Depreciation 471,000     471,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 1,446,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 471,000          
Greensboro, NC - 406 Gallimore Dairy Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 406 Gallimore Dairy Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 7021 Albert Pick Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 698,000     698,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 1,626,000     1,626,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       237,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       1,103,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       286,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       237,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       1,389,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 1,626,000     1,626,000    
SEC Schedule III, Real Estate Accumulated Depreciation 698,000     698,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 1,626,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 698,000          
Greensboro, NC - 7021 Albert Pick Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 7021 Albert Pick Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 7019 Albert Pick Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 552,000     552,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 1,448,000     1,448,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       192,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       946,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       310,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       192,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       1,256,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 1,448,000     1,448,000    
SEC Schedule III, Real Estate Accumulated Depreciation 552,000     552,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 1,448,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 552,000          
Greensboro, NC - 7019 Albert Pick Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 7019 Albert Pick Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 7015 Albert Pick Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 757,000     757,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 1,807,000     1,807,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       305,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       1,219,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       283,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       305,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       1,502,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 1,807,000     1,807,000    
SEC Schedule III, Real Estate Accumulated Depreciation 757,000     757,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 1,807,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 757,000          
Greensboro, NC - 7015 Albert Pick Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 7015 Albert Pick Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 7017 Albert Pick Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 571,000     571,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 1,612,000     1,612,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       225,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       928,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       459,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       225,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       1,387,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 1,612,000     1,612,000    
SEC Schedule III, Real Estate Accumulated Depreciation 571,000     571,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 1,612,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 571,000          
Greensboro, NC - 7017 Albert Pick Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 7017 Albert Pick Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 7011 Albert Pick Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 541,000     541,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 1,328,000     1,328,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       171,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       777,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       380,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       171,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       1,157,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 1,328,000     1,328,000    
SEC Schedule III, Real Estate Accumulated Depreciation 541,000     541,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 1,328,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 541,000          
Greensboro, NC - 7011 Albert Pick Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 7011 Albert Pick Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 424 Gallimore Dairy Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 340,000     340,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 1,328,000     1,328,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       271,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       239,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       818,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       510,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       818,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 1,328,000     1,328,000    
SEC Schedule III, Real Estate Accumulated Depreciation 340,000     340,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 1,328,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 340,000          
Greensboro, NC - 424 Gallimore Dairy Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 424 Gallimore Dairy Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 410 Gallimore Dairy Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,058,000     1,058,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 2,703,000     2,703,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       356,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       1,613,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       734,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       356,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       2,347,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 2,703,000     2,703,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,058,000     1,058,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 2,703,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,058,000          
Greensboro, NC - 410 Gallimore Dairy Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 410 Gallimore Dairy Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 412 Gallimore Dairy Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 996,000     996,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 2,470,000     2,470,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       374,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       1,523,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       573,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       374,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       2,096,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 2,470,000     2,470,000    
SEC Schedule III, Real Estate Accumulated Depreciation 996,000     996,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 2,470,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 996,000          
Greensboro, NC - 412 Gallimore Dairy Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 412 Gallimore Dairy Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 408 Gallimore Dairy Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,189,000     1,189,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 2,595,000     2,595,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       341,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       1,486,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       768,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       341,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       2,254,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 2,595,000     2,595,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,189,000     1,189,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 2,595,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,189,000          
Greensboro, NC - 408 Gallimore Dairy Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 408 Gallimore Dairy Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 414 Gallimore Dairy Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,821,000     1,821,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 4,293,000     4,293,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       659,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       2,676,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       958,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       659,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       3,634,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 4,293,000     4,293,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,821,000     1,821,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 4,293,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,821,000          
Greensboro, NC - 414 Gallimore Dairy Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 414 Gallimore Dairy Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 237 Burgess Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,990,000     1,990,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 4,468,000     4,468,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       860,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       2,919,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       689,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       860,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       3,608,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 4,468,000     4,468,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,990,000     1,990,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 4,468,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,990,000          
Greensboro, NC - 237 Burgess Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 237 Burgess Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 235 Burgess Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,664,000     2,664,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 6,861,000     6,861,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,302,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       4,392,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,167,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,302,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       5,559,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 6,861,000     6,861,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,664,000     2,664,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 6,861,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,664,000          
Greensboro, NC - 235 Burgess Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 235 Burgess Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 241 Burgess Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,302,000     1,302,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 2,838,000     2,838,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       450,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       1,517,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       871,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       450,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       2,388,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 2,838,000     2,838,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,302,000     1,302,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 2,838,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,302,000          
Greensboro, NC - 241 Burgess Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 241 Burgess Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 243 Burgess Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 906,000     906,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 2,135,000     2,135,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       452,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       1,514,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       169,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       452,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       1,683,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 2,135,000     2,135,000    
SEC Schedule III, Real Estate Accumulated Depreciation 906,000     906,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 2,135,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 906,000          
Greensboro, NC - 243 Burgess Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 243 Burgess Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 496 Gallimore Dairy Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,340,000     1,340,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 3,181,000     3,181,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       546,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,635,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       546,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       2,635,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 3,181,000     3,181,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,340,000     1,340,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 3,181,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,340,000          
Greensboro, NC - 496 Gallimore Dairy Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 496 Gallimore Dairy Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 494 Gallimore Dairy Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,049,000     1,049,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 3,578,000     3,578,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       749,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,829,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       749,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       2,829,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 3,578,000     3,578,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,049,000     1,049,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 3,578,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,049,000          
Greensboro, NC - 494 Gallimore Dairy Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 494 Gallimore Dairy Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 486 Gallimore Dairy Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 928,000     928,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 3,216,000     3,216,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       603,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,613,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       603,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       2,613,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 3,216,000     3,216,000    
SEC Schedule III, Real Estate Accumulated Depreciation 928,000     928,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 3,216,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 928,000          
Greensboro, NC - 486 Gallimore Dairy Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 486 Gallimore Dairy Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 488 Gallimore Dairy Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 812,000     812,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 2,692,000     2,692,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       499,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,193,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       499,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       2,193,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 2,692,000     2,692,000    
SEC Schedule III, Real Estate Accumulated Depreciation 812,000     812,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 2,692,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 812,000          
Greensboro, NC - 488 Gallimore Dairy Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 488 Gallimore Dairy Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 490 Gallimore Dairy Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,431,000     3,431,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 7,642,000     7,642,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,733,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       5,909,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,733,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       5,909,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,642,000     7,642,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,431,000     3,431,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 7,642,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,431,000          
Greensboro, NC - 490 Gallimore Dairy Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 490 Gallimore Dairy Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - Brigham Road - Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 2,449,000     2,449,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       7,059,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (4,610,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,449,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 2,449,000     2,449,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 2,449,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Greensboro, NC - 651 Brigham Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 1,130,000     1,130,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 3,793,000     3,793,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       453,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       360,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,980,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       813,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       2,980,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 3,793,000     3,793,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,130,000     1,130,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 3,793,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,130,000          
Greensboro, NC - 651 Brigham Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 651 Brigham Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 657 Brigham Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,012,000     3,012,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 14,861,000     14,861,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,733,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       881,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       11,247,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       3,614,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       11,247,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 14,861,000     14,861,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,012,000     3,012,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 14,861,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,012,000          
Greensboro, NC - 657 Brigham Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 657 Brigham Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 653 Brigham Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 723,000     723,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 4,401,000     4,401,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       814,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,587,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       814,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       3,587,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 4,401,000     4,401,000    
SEC Schedule III, Real Estate Accumulated Depreciation 723,000     723,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 4,401,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 723,000          
Greensboro, NC - 653 Brigham Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 653 Brigham Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 1501 Highwoods Boulevard [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,758,000     2,758,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 9,510,000     9,510,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,476,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       8,034,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,476,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       8,034,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 9,510,000     9,510,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,758,000     2,758,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 9,510,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,758,000          
Greensboro, NC - 1501 Highwoods Boulevard [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 1501 Highwoods Boulevard [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - Jefferson Pilot Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 7,448,000     7,448,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       11,759,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (4,311,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       7,448,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,448,000     7,448,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 7,448,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Greensboro, NC - 4200 Tudor Lane [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 1,099,000     1,099,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 3,186,000     3,186,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       515,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       383,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,288,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       898,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       2,288,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 3,186,000     3,186,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,099,000     1,099,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 3,186,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,099,000          
Greensboro, NC - 4200 Tudor Lane [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 4200 Tudor Lane [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 4224 Tudor Lane [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 852,000     852,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 2,826,000     2,826,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       435,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       288,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,103,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       723,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       2,103,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 2,826,000     2,826,000    
SEC Schedule III, Real Estate Accumulated Depreciation 852,000     852,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 2,826,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 852,000          
Greensboro, NC - 4224 Tudor Lane [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 4224 Tudor Lane [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 7023 Albert Pick [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,134,000     2,134,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 5,320,000     5,320,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       834,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       3,459,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,027,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       834,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       4,486,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 5,320,000     5,320,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,134,000     2,134,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 5,320,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,134,000          
Greensboro, NC - 7023 Albert Pick [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 7023 Albert Pick [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 370 Knollwood Street [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 5,068,000     5,068,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 13,023,000     13,023,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,826,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       7,495,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,702,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,826,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       11,197,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 13,023,000     13,023,000    
SEC Schedule III, Real Estate Accumulated Depreciation 5,068,000     5,068,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 13,023,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 5,068,000          
Greensboro, NC - 370 Knollwood Street [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 370 Knollwood Street [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 380 Knollwood Street [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 8,289,000     8,289,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 19,199,000     19,199,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,989,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       12,029,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       4,181,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,989,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       16,210,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 19,199,000     19,199,000    
SEC Schedule III, Real Estate Accumulated Depreciation 8,289,000     8,289,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 19,199,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 8,289,000          
Greensboro, NC - 380 Knollwood Street [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 380 Knollwood Street [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - Church Street Medical Center I [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 943,000     943,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 12,118,000     12,118,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,734,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       9,129,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       255,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,734,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       9,384,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 12,118,000     12,118,000    
SEC Schedule III, Real Estate Accumulated Depreciation 943,000     943,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 12,118,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 943,000          
Greensboro, NC - Church Street Medical Center I [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - Church Street Medical Center I [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - Church Street Medical Center II [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 877,000     877,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 7,869,000     7,869,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,376,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       5,451,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       42,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,376,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       5,493,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,869,000     7,869,000    
SEC Schedule III, Real Estate Accumulated Depreciation 877,000     877,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 7,869,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 877,000          
Greensboro, NC - Church Street Medical Center II [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - Church Street Medical Center II [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - Church Street Medical Center III [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 650,000     650,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 5,589,000     5,589,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       925,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       4,551,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       113,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       925,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       4,664,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 5,589,000     5,589,000    
SEC Schedule III, Real Estate Accumulated Depreciation 650,000     650,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 5,589,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 650,000          
Greensboro, NC - Church Street Medical Center III [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - Church Street Medical Center III [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 628 Green Valley [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,153,000     1,153,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 15,961,000     15,961,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,906,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       12,141,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       914,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,906,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       13,055,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 15,961,000     15,961,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,153,000     1,153,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 15,961,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,153,000          
Greensboro, NC - 628 Green Valley [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 628 Green Valley [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Greensboro, NC - 701 Green Valley [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,091,000     1,091,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 12,387,000     12,387,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       3,787,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       7,719,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       881,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       3,787,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       8,600,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 12,387,000     12,387,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,091,000     1,091,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 12,387,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,091,000          
Greensboro, NC - 701 Green Valley [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Greensboro, NC - 701 Green Valley [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Pittsburgh, PA - One PPG Place [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 20,301,000     20,301,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 154,040,000     154,040,000    
Real Estate and Accumulated Depreciation [Line Items]            
Real Estate and Accumulated Depreciation, Encumbrances [1]       112,230,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       9,819,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       107,643,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       36,578,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       9,819,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       144,221,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 154,040,000     154,040,000    
SEC Schedule III, Real Estate Accumulated Depreciation 20,301,000     20,301,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 154,040,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 20,301,000          
Pittsburgh, PA - One PPG Place [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Pittsburgh, PA - One PPG Place [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Pittsburgh, PA - Two PPG Place - Office [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,623,000     1,623,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 17,229,000     17,229,000    
Real Estate and Accumulated Depreciation [Line Items]            
Real Estate and Accumulated Depreciation, Encumbrances [1]       112,230,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,302,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       10,978,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,949,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,302,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       14,927,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 17,229,000     17,229,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,623,000     1,623,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 17,229,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,623,000          
Pittsburgh, PA - Two PPG Place - Office [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Pittsburgh, PA - Two PPG Place - Office [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Pittsburgh, PA - Three PPG Place [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 758,000     758,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 7,275,000     7,275,000    
Real Estate and Accumulated Depreciation [Line Items]            
Real Estate and Accumulated Depreciation, Encumbrances [1]       112,230,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       501,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       2,923,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,851,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       501,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       6,774,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,275,000     7,275,000    
SEC Schedule III, Real Estate Accumulated Depreciation 758,000     758,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 7,275,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 758,000          
Pittsburgh, PA - Three PPG Place [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Pittsburgh, PA - Three PPG Place [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Pittsburgh, PA - Four PPG Place [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 688,000     688,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 5,304,000     5,304,000    
Real Estate and Accumulated Depreciation [Line Items]            
Real Estate and Accumulated Depreciation, Encumbrances [1]       112,230,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       620,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       3,239,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,445,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       620,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       4,684,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 5,304,000     5,304,000    
SEC Schedule III, Real Estate Accumulated Depreciation 688,000     688,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 5,304,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 688,000          
Pittsburgh, PA - Four PPG Place [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Pittsburgh, PA - Four PPG Place [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Pittsburgh, PA - Five PPG Place [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,116,000     1,116,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 7,338,000     7,338,000    
Real Estate and Accumulated Depreciation [Line Items]            
Real Estate and Accumulated Depreciation, Encumbrances [1]       112,230,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       803,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       4,924,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,611,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       803,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       6,535,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,338,000     7,338,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,116,000     1,116,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 7,338,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,116,000          
Pittsburgh, PA - Five PPG Place [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Pittsburgh, PA - Five PPG Place [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Pittsburgh, PA - Six PPG Place [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,603,000     3,603,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 34,779,000     34,779,000    
Real Estate and Accumulated Depreciation [Line Items]            
Real Estate and Accumulated Depreciation, Encumbrances [1]       112,230,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       3,353,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       25,602,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       5,824,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       3,353,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       31,426,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 34,779,000     34,779,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,603,000     3,603,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 34,779,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,603,000          
Pittsburgh, PA - Six PPG Place [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Pittsburgh, PA - Six PPG Place [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Pittsburgh, PA - EQT Plaza [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 10,773,000     10,773,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 93,235,000     93,235,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       83,812,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       9,423,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       93,235,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 93,235,000     93,235,000    
SEC Schedule III, Real Estate Accumulated Depreciation 10,773,000     10,773,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 93,235,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 10,773,000          
Pittsburgh, PA - EQT Plaza [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Pittsburgh, PA - EQT Plaza [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - 3600 Glenwood Avenue [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 7,388,000     7,388,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 15,425,000     15,425,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       10,994,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       4,431,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       15,425,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 15,425,000     15,425,000    
SEC Schedule III, Real Estate Accumulated Depreciation 7,388,000     7,388,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 15,425,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 7,388,000          
Raleigh, NC - 3600 Glenwood Avenue [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - 3600 Glenwood Avenue [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - 3737 Glenwood Avenue [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 5,981,000     5,981,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 15,983,000     15,983,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       318,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       15,665,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       318,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       15,665,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 15,983,000     15,983,000    
SEC Schedule III, Real Estate Accumulated Depreciation 5,981,000     5,981,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 15,983,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 5,981,000          
Raleigh, NC - 3737 Glenwood Avenue [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - 3737 Glenwood Avenue [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - 4800 North Park [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 14,175,000     14,175,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 27,834,000     27,834,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,678,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       17,630,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       7,526,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,678,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       25,156,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 27,834,000     27,834,000    
SEC Schedule III, Real Estate Accumulated Depreciation 14,175,000     14,175,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 27,834,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 14,175,000          
Raleigh, NC - 4800 North Park [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - 4800 North Park [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - 4900 North Park [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,757,000     1,757,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 4,917,000     4,917,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       770,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       1,983,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,164,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       770,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       4,147,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 4,917,000     4,917,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,757,000     1,757,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 4,917,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,757,000          
Raleigh, NC - 4900 North Park [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - 4900 North Park [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - 5000 North Park [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 4,177,000     4,177,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 8,606,000     8,606,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,010,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       4,612,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (49,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,033,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       961,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       7,645,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 8,606,000     8,606,000    
SEC Schedule III, Real Estate Accumulated Depreciation 4,177,000     4,177,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 8,606,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 4,177,000          
Raleigh, NC - 5000 North Park [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - 5000 North Park [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - 801 Raleigh Corporate Center [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,575,000     3,575,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 11,811,000     11,811,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       828,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       272,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       10,711,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,100,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       10,711,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 11,811,000     11,811,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,575,000     3,575,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 11,811,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,575,000          
Raleigh, NC - 801 Raleigh Corporate Center [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - 801 Raleigh Corporate Center [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Blue Ridge I [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,168,000     3,168,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 6,763,000     6,763,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       722,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       4,606,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,435,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       722,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       6,041,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 6,763,000     6,763,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,168,000     3,168,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 6,763,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,168,000          
Raleigh, NC - Blue Ridge I [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Blue Ridge I [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Blue Ridge II [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,344,000     1,344,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 2,655,000     2,655,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       462,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       1,410,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       783,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       462,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       2,193,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 2,655,000     2,655,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,344,000     1,344,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 2,655,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,344,000          
Raleigh, NC - Blue Ridge II [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Blue Ridge II [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Cape Fear [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,262,000     2,262,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 2,882,000     2,882,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       131,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       1,630,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (2,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,123,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       129,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       2,753,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 2,882,000     2,882,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,262,000     2,262,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 2,882,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,262,000          
Raleigh, NC - Cape Fear [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Cape Fear [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Catawba [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,419,000     3,419,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 4,128,000     4,128,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       125,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       1,635,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (2,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,370,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       123,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       4,005,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 4,128,000     4,128,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,419,000     3,419,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 4,128,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,419,000          
Raleigh, NC - Catawba [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Catawba [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - CentreGreen One [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 4,143,000     4,143,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 11,788,000     11,788,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,529,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (391,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       10,650,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,138,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       10,650,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 11,788,000     11,788,000    
SEC Schedule III, Real Estate Accumulated Depreciation 4,143,000     4,143,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 11,788,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 4,143,000          
Raleigh, NC - CentreGreen One [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - CentreGreen One [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - CentreGreen Two [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,095,000     3,095,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 10,916,000     10,916,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,653,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (389,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       9,652,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,264,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       9,652,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 10,916,000     10,916,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,095,000     3,095,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 10,916,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,095,000          
Raleigh, NC - CentreGreen Two [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - CentreGreen Two [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - CentreGreen Three - Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 1,291,000     1,291,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,876,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (585,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,291,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 1,291,000     1,291,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 1,291,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Raleigh, NC - CentreGreen Four [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 2,952,000     2,952,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 14,892,000     14,892,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,779,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (397,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       13,510,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,382,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       13,510,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 14,892,000     14,892,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,952,000     2,952,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 14,892,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,952,000          
Raleigh, NC - CentreGreen Four [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - CentreGreen Four [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - CentreGreen Five [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 4,141,000     4,141,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 14,097,000     14,097,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,280,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       55,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       12,762,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,335,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       12,762,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 14,097,000     14,097,000    
SEC Schedule III, Real Estate Accumulated Depreciation 4,141,000     4,141,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 14,097,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 4,141,000          
Raleigh, NC - CentreGreen Five [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - CentreGreen Five [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Cottonwood [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,057,000     2,057,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 4,441,000     4,441,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       609,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       3,244,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       588,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       609,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       3,832,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 4,441,000     4,441,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,057,000     2,057,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 4,441,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,057,000          
Raleigh, NC - Cottonwood [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Cottonwood [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Dogwood [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,815,000     1,815,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 4,074,000     4,074,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       766,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       2,769,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       539,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       766,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       3,308,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 4,074,000     4,074,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,815,000     1,815,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 4,074,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,815,000          
Raleigh, NC - Dogwood [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Dogwood [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - GlenLake Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 42,000     42,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 4,758,000     4,758,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       13,003,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (8,359,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       114,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       4,644,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       114,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 4,758,000     4,758,000    
SEC Schedule III, Real Estate Accumulated Depreciation 42,000     42,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 4,758,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 42,000          
Raleigh, NC - GlenLake Land [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - GlenLake Land [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - GlenLake One [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 6,903,000     6,903,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 22,690,000     22,690,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       924,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       1,324,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       20,442,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,248,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       20,442,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 22,690,000     22,690,000    
SEC Schedule III, Real Estate Accumulated Depreciation 6,903,000     6,903,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 22,690,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 6,903,000          
Raleigh, NC - GlenLake One [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - GlenLake One [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - GlenLake Four [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 6,944,000     6,944,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 24,000,000     24,000,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,659,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       493,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       21,848,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,152,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       21,848,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 24,000,000     24,000,000    
SEC Schedule III, Real Estate Accumulated Depreciation 6,944,000     6,944,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 24,000,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 6,944,000          
Raleigh, NC - GlenLake Four [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - GlenLake Four [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - GlenLake Six [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 5,734,000     5,734,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 22,905,000     22,905,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       941,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (365,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       22,329,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       576,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       22,329,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 22,905,000     22,905,000    
SEC Schedule III, Real Estate Accumulated Depreciation 5,734,000     5,734,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 22,905,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 5,734,000          
Raleigh, NC - GlenLake Six [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - GlenLake Six [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - 701 Raleigh Corporate Center [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 7,566,000     7,566,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 16,493,000     16,493,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,304,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       540,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       14,649,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,844,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       14,649,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 16,493,000     16,493,000    
SEC Schedule III, Real Estate Accumulated Depreciation 7,566,000     7,566,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 16,493,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 7,566,000          
Raleigh, NC - 701 Raleigh Corporate Center [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - 701 Raleigh Corporate Center [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Highwoods Centre [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,163,000     3,163,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 7,851,000     7,851,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       531,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (267,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       7,587,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       264,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       7,587,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,851,000     7,851,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,163,000     3,163,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 7,851,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,163,000          
Raleigh, NC - Highwoods Centre [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Highwoods Centre [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Highwoods Office Center North Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 35,000     35,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 406,000     406,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       357,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       49,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       357,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       49,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 406,000     406,000    
SEC Schedule III, Real Estate Accumulated Depreciation 35,000     35,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 406,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 35,000          
Raleigh, NC - Highwoods Office Center North Land [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Highwoods Office Center North Land [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Highwoods Tower One [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 11,861,000     11,861,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 21,223,000     21,223,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       203,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       16,744,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       4,276,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       203,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       21,020,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 21,223,000     21,223,000    
SEC Schedule III, Real Estate Accumulated Depreciation 11,861,000     11,861,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 21,223,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 11,861,000          
Raleigh, NC - Highwoods Tower One [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Highwoods Tower One [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Highwoods Tower Two [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 8,164,000     8,164,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 22,432,000     22,432,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       365,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       503,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       21,564,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       868,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       21,564,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 22,432,000     22,432,000    
SEC Schedule III, Real Estate Accumulated Depreciation 8,164,000     8,164,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 22,432,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 8,164,000          
Raleigh, NC - Highwoods Tower Two [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Highwoods Tower Two [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Inveresk Land Parcel 2 [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,000     1,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 805,000     805,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       657,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       38,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       110,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       695,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       110,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 805,000     805,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,000     1,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 805,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 1,000          
Raleigh, NC - Lake Boone Medical Center [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 1,037,000     1,037,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 7,942,000     7,942,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,450,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       6,311,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       181,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,450,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       6,492,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,942,000     7,942,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,037,000     1,037,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 7,942,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,037,000          
Raleigh, NC - Lake Boone Medical Center [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Lake Boone Medical Center [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - 4620 Creekstone Drive [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,109,000     1,109,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 3,341,000     3,341,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       149,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       107,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,085,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       256,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       3,085,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 3,341,000     3,341,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,109,000     1,109,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 3,341,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,109,000          
Raleigh, NC - 4620 Creekstone Drive [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - 4620 Creekstone Drive [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - 4825 Creekstone Drive [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 4,415,000     4,415,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 10,771,000     10,771,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       398,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       293,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       10,080,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       691,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       10,080,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 10,771,000     10,771,000    
SEC Schedule III, Real Estate Accumulated Depreciation 4,415,000     4,415,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 10,771,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 4,415,000          
Raleigh, NC - 4825 Creekstone Drive [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - 4825 Creekstone Drive [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Pamlico [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 6,821,000     6,821,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 10,717,000     10,717,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       289,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       10,428,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       289,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       10,428,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 10,717,000     10,717,000    
SEC Schedule III, Real Estate Accumulated Depreciation 6,821,000     6,821,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 10,717,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 6,821,000          
Raleigh, NC - Pamlico [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Pamlico [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - ParkWest One [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,210,000     1,210,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 3,581,000     3,581,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       242,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,339,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       242,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       3,339,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 3,581,000     3,581,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,210,000     1,210,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 3,581,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,210,000          
Raleigh, NC - ParkWest One [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - ParkWest One [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - ParkWest Two [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,215,000     1,215,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 3,641,000     3,641,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       356,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,285,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       356,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       3,285,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 3,641,000     3,641,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,215,000     1,215,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 3,641,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,215,000          
Raleigh, NC - ParkWest Two [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - ParkWest Two [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Progress Center Renovation [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 297,000     297,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 362,000     362,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       362,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       362,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 362,000     362,000    
SEC Schedule III, Real Estate Accumulated Depreciation 297,000     297,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 362,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 297,000          
Raleigh, NC - Progress Center Renovation [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Progress Center Renovation [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Raleigh Corp Center Lot D [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 1,219,000     1,219,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,211,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       8,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,219,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 1,219,000     1,219,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 1,219,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Raleigh, NC - PNC Plaza [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 17,248,000     17,248,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 73,440,000     73,440,000    
Real Estate and Accumulated Depreciation [Line Items]            
Real Estate and Accumulated Depreciation, Encumbrances       43,852,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,206,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       72,234,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,206,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       72,234,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 73,440,000     73,440,000    
SEC Schedule III, Real Estate Accumulated Depreciation 17,248,000     17,248,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 73,440,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 17,248,000          
Raleigh, NC - PNC Plaza [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - PNC Plaza [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Rexwoods Center I [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,187,000     3,187,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 6,142,000     6,142,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       878,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       3,730,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,534,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       878,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       5,264,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 6,142,000     6,142,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,187,000     3,187,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 6,142,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,187,000          
Raleigh, NC - Rexwoods Center I [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Rexwoods Center I [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Rexwoods Center II [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,321,000     1,321,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 3,266,000     3,266,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       362,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       1,818,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,086,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       362,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       2,904,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 3,266,000     3,266,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,321,000     1,321,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 3,266,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,321,000          
Raleigh, NC - Rexwoods Center II [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Rexwoods Center II [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Rexwoods Center III [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,170,000     2,170,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 4,694,000     4,694,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       919,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       2,816,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       959,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       919,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       3,775,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 4,694,000     4,694,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,170,000     2,170,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 4,694,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,170,000          
Raleigh, NC - Rexwoods Center III [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Rexwoods Center III [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Rexwoods Center IV [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,016,000     2,016,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 4,900,000     4,900,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       586,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       4,314,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       586,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       4,314,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 4,900,000     4,900,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,016,000     2,016,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 4,900,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,016,000          
Raleigh, NC - Rexwoods Center IV [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Rexwoods Center IV [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Rexwoods Center V [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,525,000     2,525,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 7,838,000     7,838,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,301,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       184,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       6,353,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,485,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       6,353,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,838,000     7,838,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,525,000     2,525,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 7,838,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,525,000          
Raleigh, NC - Rexwoods Center V [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Rexwoods Center V [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Riverbirch [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,455,000     1,455,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 9,719,000     9,719,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       469,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       4,038,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       23,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       5,189,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       492,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       9,227,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 9,719,000     9,719,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,455,000     1,455,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 9,719,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,455,000          
Raleigh, NC - Riverbirch [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Riverbirch [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Situs I [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,612,000     1,612,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 4,562,000     4,562,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       692,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       4,646,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       178,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       (954,000)    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       870,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       3,692,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 4,562,000     4,562,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,612,000     1,612,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 4,562,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,612,000          
Raleigh, NC - Situs I [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Situs I [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Situs II [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,252,000     2,252,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 6,175,000     6,175,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       718,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       6,254,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       181,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       (978,000)    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       899,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       5,276,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 6,175,000     6,175,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,252,000     2,252,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 6,175,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,252,000          
Raleigh, NC - Situs II [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Situs II [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Situs III [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,014,000     1,014,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 3,376,000     3,376,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       440,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       4,078,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       119,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       (1,261,000)    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       559,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       2,817,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 3,376,000     3,376,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,014,000     1,014,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 3,376,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,014,000          
Raleigh, NC - Situs III [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Situs III [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Six Forks Center I [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,271,000     2,271,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 5,205,000     5,205,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       666,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       2,665,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,874,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       666,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       4,539,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 5,205,000     5,205,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,271,000     2,271,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 5,205,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,271,000          
Raleigh, NC - Six Forks Center I [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Six Forks Center I [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Six Forks Center II [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,560,000     3,560,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 7,890,000     7,890,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,086,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       4,533,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,271,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,086,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       6,804,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,890,000     7,890,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,560,000     3,560,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 7,890,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,560,000          
Raleigh, NC - Six Forks Center II [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Six Forks Center II [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Six Forks Center III [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,836,000     3,836,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 7,997,000     7,997,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       862,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       4,411,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,724,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       862,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       7,135,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,997,000     7,997,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,836,000     3,836,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 7,997,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,836,000          
Raleigh, NC - Six Forks Center III [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Six Forks Center III [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Smoketree Tower [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 8,465,000     8,465,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 20,144,000     20,144,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,353,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       11,743,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       6,048,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,353,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       17,791,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 20,144,000     20,144,000    
SEC Schedule III, Real Estate Accumulated Depreciation 8,465,000     8,465,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 20,144,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 8,465,000          
Raleigh, NC - Smoketree Tower [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Smoketree Tower [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - 4601 Creekstone Drive [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,535,000     2,535,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 5,948,000     5,948,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       255,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       217,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       5,476,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       472,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       5,476,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 5,948,000     5,948,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,535,000     2,535,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 5,948,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,535,000          
Raleigh, NC - 4601 Creekstone Drive [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - 4601 Creekstone Drive [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Weston Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 7,779,000     7,779,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       22,771,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (14,992,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       7,779,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,779,000     7,779,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 7,779,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Raleigh, NC - 4625 Creekstone Drive [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 2,670,000     2,670,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 6,471,000     6,471,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       458,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       268,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       5,745,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       726,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       5,745,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 6,471,000     6,471,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,670,000     2,670,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 6,471,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,670,000          
Raleigh, NC - 4625 Creekstone Drive [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - 4625 Creekstone Drive [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - 11000 Weston Parkway [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,900,000     2,900,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 21,984,000     21,984,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,651,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       18,850,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       483,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,651,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       19,333,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 21,984,000     21,984,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,900,000     2,900,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 21,984,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,900,000          
Raleigh, NC - 11000 Weston Parkway [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - 11000 Weston Parkway [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - GlenLake Five [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,004,000     1,004,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 32,527,000     32,527,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       2,263,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       30,264,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,263,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       30,264,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 32,527,000     32,527,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,004,000     1,004,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 32,527,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,004,000          
Raleigh, NC - GlenLake Five [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - GlenLake Five [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - 11800 Weston Parkway [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 299,000     299,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 14,014,000     14,014,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       826,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       13,188,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       826,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       13,188,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 14,014,000     14,014,000    
SEC Schedule III, Real Estate Accumulated Depreciation 299,000     299,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 14,014,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 299,000          
Raleigh, NC - 11800 Weston Parkway [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - 11800 Weston Parkway [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - CentreGreen Cafe [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 96,000     96,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 3,550,000     3,550,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       41,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,509,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       41,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       3,509,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 3,550,000     3,550,000    
SEC Schedule III, Real Estate Accumulated Depreciation 96,000     96,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 3,550,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 96,000          
Raleigh, NC - CentreGreen Cafe [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - CentreGreen Cafe [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - CentreGreen Fitness Center [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 63,000     63,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 2,349,000     2,349,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       27,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,322,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       27,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       2,322,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 2,349,000     2,349,000    
SEC Schedule III, Real Estate Accumulated Depreciation 63,000     63,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 2,349,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 63,000          
Raleigh, NC - CentreGreen Fitness Center [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - CentreGreen Fitness Center [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - One Bank of America Plaza [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,222,000     3,222,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 90,068,000     90,068,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       11,288,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       68,375,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       10,405,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       11,288,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       78,780,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 90,068,000     90,068,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,222,000     3,222,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 90,068,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,222,000          
Raleigh, NC - One Bank of America Plaza [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - One Bank of America Plaza [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Weston Lakefront I [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,209,000     1,209,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 50,789,000     50,789,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       8,522,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       42,267,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       8,522,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       42,267,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 50,789,000     50,789,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,209,000     1,209,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 50,789,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,209,000          
Raleigh, NC - Weston Lakefront I [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Weston Lakefront I [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Weston Lakefront II [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,068,000     1,068,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 54,392,000     54,392,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       8,522,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       45,870,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       8,522,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       45,870,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 54,392,000     54,392,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,068,000     1,068,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 54,392,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,068,000          
Raleigh, NC - Weston Lakefront II [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Raleigh, NC - Weston Lakefront II [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Raleigh, NC - Other Property [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 8,750,000     8,750,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 19,668,000     19,668,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       26,276,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       16,449,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (24,595,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,538,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,681,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       17,987,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 19,668,000     19,668,000    
SEC Schedule III, Real Estate Accumulated Depreciation 8,750,000     8,750,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 19,668,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 8,750,000          
Richmond, VA - 4900 Cox Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 4,142,000     4,142,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 9,566,000     9,566,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,324,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       5,311,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       15,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,916,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,339,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       8,227,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 9,566,000     9,566,000    
SEC Schedule III, Real Estate Accumulated Depreciation 4,142,000     4,142,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 9,566,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 4,142,000          
Richmond, VA - 4900 Cox Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - 4900 Cox Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - Colonnade Building [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,431,000     2,431,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 9,182,000     9,182,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,364,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       6,105,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,713,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,364,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       7,818,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 9,182,000     9,182,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,431,000     2,431,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 9,182,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,431,000          
Richmond, VA - Colonnade Building [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - Colonnade Building [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - Dominion Place - Pitts Parcel - Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 436,000     436,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,101,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (665,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       436,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 436,000     436,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 436,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Richmond, VA - Markel 4521 [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 4,575,000     4,575,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 13,392,000     13,392,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,581,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       13,299,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       168,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       (1,656,000)    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,749,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       11,643,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 13,392,000     13,392,000    
SEC Schedule III, Real Estate Accumulated Depreciation 4,575,000     4,575,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 13,392,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 4,575,000          
Richmond, VA - Markel 4521 [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - Markel 4521 [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - Hamilton Beach/Proctor Silex [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,897,000     3,897,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 7,747,000     7,747,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,086,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       4,345,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       10,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,306,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,096,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       6,651,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,747,000     7,747,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,897,000     3,897,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 7,747,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,897,000          
Richmond, VA - Hamilton Beach/Proctor Silex [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - Hamilton Beach/Proctor Silex [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - Highwoods Commons [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,561,000     1,561,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 4,892,000     4,892,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       521,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       458,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,913,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       979,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       3,913,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 4,892,000     4,892,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,561,000     1,561,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 4,892,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,561,000          
Richmond, VA - Highwoods Commons [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - Highwoods Commons [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - Highwoods One [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 5,571,000     5,571,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 12,991,000     12,991,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,688,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       22,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       11,281,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,710,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       11,281,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 12,991,000     12,991,000    
SEC Schedule III, Real Estate Accumulated Depreciation 5,571,000     5,571,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 12,991,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 5,571,000          
Richmond, VA - Highwoods One [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - Highwoods One [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - Highwoods Two [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,947,000     2,947,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 7,145,000     7,145,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       786,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       226,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       6,133,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,012,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       6,133,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,145,000     7,145,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,947,000     2,947,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 7,145,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,947,000          
Richmond, VA - Highwoods Two [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - Highwoods Two [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - Highwoods Five [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,485,000     2,485,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 6,289,000     6,289,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       783,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       11,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       5,495,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       794,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       5,495,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 6,289,000     6,289,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,485,000     2,485,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 6,289,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,485,000          
Richmond, VA - Highwoods Five [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - Highwoods Five [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - Highwoods Plaza [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,499,000     2,499,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 6,988,000     6,988,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       909,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       187,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       5,892,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,096,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       5,892,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 6,988,000     6,988,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,499,000     2,499,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 6,988,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,499,000          
Richmond, VA - Highwoods Plaza [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - Highwoods Plaza [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - Innslake Center [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,238,000     2,238,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 7,526,000     7,526,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       845,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       195,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       6,486,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,040,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       6,486,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,526,000     7,526,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,238,000     2,238,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 7,526,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,238,000          
Richmond, VA - Innslake Center [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - Innslake Center [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - Highwoods Centre [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,958,000     2,958,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 7,324,000     7,324,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,205,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       4,825,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,294,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,205,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       6,119,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,324,000     7,324,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,958,000     2,958,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 7,324,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,958,000          
Richmond, VA - Highwoods Centre [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - Highwoods Centre [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - Markel 4501 [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 5,360,000     5,360,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 13,073,000     13,073,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,300,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       13,259,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       213,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       (1,699,000)    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,513,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       11,560,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 13,073,000     13,073,000    
SEC Schedule III, Real Estate Accumulated Depreciation 5,360,000     5,360,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 13,073,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 5,360,000          
Richmond, VA - Markel 4501 [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - Markel 4501 [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - Markel 4600 [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 7,621,000     7,621,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 18,901,000     18,901,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,700,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       17,081,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       169,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       (49,000)    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,869,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       17,032,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 18,901,000     18,901,000    
SEC Schedule III, Real Estate Accumulated Depreciation 7,621,000     7,621,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 18,901,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 7,621,000          
Richmond, VA - Markel 4600 [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - Markel 4600 [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - North Park [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 5,205,000     5,205,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 13,292,000     13,292,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,163,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       8,659,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       6,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,464,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,169,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       11,123,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 13,292,000     13,292,000    
SEC Schedule III, Real Estate Accumulated Depreciation 5,205,000     5,205,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 13,292,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 5,205,000          
Richmond, VA - North Park [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - North Park [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - North Shore Commons I [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 4,155,000     4,155,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 13,016,000     13,016,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       951,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       17,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       12,048,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       968,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       12,048,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 13,016,000     13,016,000    
SEC Schedule III, Real Estate Accumulated Depreciation 4,155,000     4,155,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 13,016,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 4,155,000          
Richmond, VA - North Shore Commons I [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - North Shore Commons I [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - North Shore Commons II [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,123,000     2,123,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 12,522,000     12,522,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,067,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (89,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       10,544,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,978,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       10,544,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 12,522,000     12,522,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,123,000     2,123,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 12,522,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,123,000          
Richmond, VA - North Shore Commons II [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - North Shore Commons II [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - North Shore Commons C - Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 1,512,000     1,512,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,497,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       15,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,512,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 1,512,000     1,512,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 1,512,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Richmond, VA - North Shore Commons D - Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 1,261,000     1,261,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,261,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,261,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 1,261,000     1,261,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 1,261,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Richmond, VA - Nuckols Corner Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 1,462,000     1,462,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,259,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       203,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,462,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 1,462,000     1,462,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 1,462,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Richmond, VA - One Shockoe Plaza [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 7,921,000     7,921,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 16,134,000     16,134,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       356,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       15,778,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       356,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       15,778,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 16,134,000     16,134,000    
SEC Schedule III, Real Estate Accumulated Depreciation 7,921,000     7,921,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 16,134,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 7,921,000          
Richmond, VA - One Shockoe Plaza [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - One Shockoe Plaza [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - Pavilion Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 201,000     201,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       181,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       46,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       20,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       (46,000)    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       201,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 201,000     201,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 201,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Richmond, VA - Lake Brook Commons [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 2,883,000     2,883,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 12,674,000     12,674,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,600,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       8,864,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       21,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,189,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,621,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       11,053,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 12,674,000     12,674,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,883,000     2,883,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 12,674,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,883,000          
Richmond, VA - Lake Brook Commons [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - Lake Brook Commons [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - Sadler & Cox Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 1,878,000     1,878,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,535,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       343,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,878,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 1,878,000     1,878,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 1,878,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Richmond, VA - 4840 Cox Road [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 5,704,000     5,704,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 15,835,000     15,835,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,918,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       358,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       13,559,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,276,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       13,559,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 15,835,000     15,835,000    
SEC Schedule III, Real Estate Accumulated Depreciation 5,704,000     5,704,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 15,835,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 5,704,000          
Richmond, VA - 4840 Cox Road [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - 4840 Cox Road [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - Stony Point F Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 1,067,000     1,067,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,841,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (774,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,067,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 1,067,000     1,067,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 1,067,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Richmond, VA - Stony Point I [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 6,798,000     6,798,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 16,308,000     16,308,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,384,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       11,630,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (267,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,561,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,117,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       15,191,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 16,308,000     16,308,000    
SEC Schedule III, Real Estate Accumulated Depreciation 6,798,000     6,798,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 16,308,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 6,798,000          
Richmond, VA - Stony Point I [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - Stony Point I [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - Stony Point II [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 5,094,000     5,094,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 13,427,000     13,427,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,240,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       103,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       12,084,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,343,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       12,084,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 13,427,000     13,427,000    
SEC Schedule III, Real Estate Accumulated Depreciation 5,094,000     5,094,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 13,427,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 5,094,000          
Richmond, VA - Stony Point II [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - Stony Point II [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - Stony Point III [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,407,000     3,407,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 10,931,000     10,931,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       995,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       9,936,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       995,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       9,936,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 10,931,000     10,931,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,407,000     3,407,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 10,931,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,407,000          
Richmond, VA - Stony Point III [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - Stony Point III [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - Stony Point IV [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,864,000     2,864,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 12,258,000     12,258,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       955,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       11,303,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       955,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       11,303,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 12,258,000     12,258,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,864,000     2,864,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 12,258,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,864,000          
Richmond, VA - Stony Point IV [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - Stony Point IV [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - Virginia Mutual [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,658,000     2,658,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 8,514,000     8,514,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,301,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       6,036,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       15,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,162,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,316,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       7,198,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 8,514,000     8,514,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,658,000     2,658,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 8,514,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,658,000          
Richmond, VA - Virginia Mutual [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - Virginia Mutual [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - Waterfront Plaza [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,103,000     2,103,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 4,131,000     4,131,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       585,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       2,347,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       8,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,191,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       593,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       3,538,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 4,131,000     4,131,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,103,000     2,103,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 4,131,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,103,000          
Richmond, VA - Waterfront Plaza [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - Waterfront Plaza [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Richmond, VA - Innsbrook Center [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,661,000     2,661,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 9,557,000     9,557,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       914,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       8,249,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       394,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       914,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       8,643,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 9,557,000     9,557,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,661,000     2,661,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 9,557,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,661,000          
Richmond, VA - Innsbrook Center [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Richmond, VA - Innsbrook Center [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - 4200 Cypress [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,225,000     3,225,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 21,815,000     21,815,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,673,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       16,470,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,672,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,673,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       19,142,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 21,815,000     21,815,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,225,000     3,225,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 21,815,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,225,000          
Tampa, FL - 4200 Cypress [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - 4200 Cypress [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - Bayshore Place [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 6,661,000     6,661,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 16,000,000     16,000,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,276,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       11,817,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,907,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,276,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       13,724,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 16,000,000     16,000,000    
SEC Schedule III, Real Estate Accumulated Depreciation 6,661,000     6,661,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 16,000,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 6,661,000          
Tampa, FL - Bayshore Place [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - Bayshore Place [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - General Services Administration [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 9,040,000     9,040,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 31,993,000     31,993,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       4,054,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       406,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       27,533,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       4,460,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       27,533,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 31,993,000     31,993,000    
SEC Schedule III, Real Estate Accumulated Depreciation 9,040,000     9,040,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 31,993,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 9,040,000          
Tampa, FL - General Services Administration [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - General Services Administration [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - Highwoods Preserve Building I [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 9,238,000     9,238,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 23,588,000     23,588,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       991,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       22,597,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       991,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       22,597,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 23,588,000     23,588,000    
SEC Schedule III, Real Estate Accumulated Depreciation 9,238,000     9,238,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 23,588,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 9,238,000          
Tampa, FL - Highwoods Preserve Building I [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - Highwoods Preserve Building I [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - Highwoods Preserve Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 1,970,000     1,970,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,485,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       485,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,970,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 1,970,000     1,970,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 1,970,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Tampa, FL - Highwoods Preserve Building V [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 9,844,000     9,844,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 26,242,000     26,242,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       881,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       25,361,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       881,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       25,361,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 26,242,000     26,242,000    
SEC Schedule III, Real Estate Accumulated Depreciation 9,844,000     9,844,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 26,242,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 9,844,000          
Tampa, FL - Highwoods Preserve Building V [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - Highwoods Preserve Building V [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - Highwoods Bay Center I [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 8,540,000     8,540,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 40,181,000     40,181,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       3,565,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (64,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       36,680,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       3,501,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       36,680,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 40,181,000     40,181,000    
SEC Schedule III, Real Estate Accumulated Depreciation 8,540,000     8,540,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 40,181,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 8,540,000          
Tampa, FL - Highwoods Bay Center I [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - Highwoods Bay Center I [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - HIW Bay Center II Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 3,482,000     3,482,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       3,482,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       3,482,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 3,482,000     3,482,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 3,482,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Tampa, FL - HIW Preserve Building VII [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 2,730,000     2,730,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 13,288,000     13,288,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       790,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       12,498,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       790,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       12,498,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 13,288,000     13,288,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,730,000     2,730,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 13,288,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,730,000          
Tampa, FL - HIW Preserve Building VII [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - HIW Preserve Building VII [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - HIW Preserve VII Garage [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,513,000     1,513,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 6,789,000     6,789,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       6,789,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       6,789,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 6,789,000     6,789,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,513,000     1,513,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 6,789,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,513,000          
Tampa, FL - HIW Preserve VII Garage [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - HIW Preserve VII Garage [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - Horizon [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 4,583,000     4,583,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 9,584,000     9,584,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       6,257,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,327,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       9,584,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 9,584,000     9,584,000    
SEC Schedule III, Real Estate Accumulated Depreciation 4,583,000     4,583,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 9,584,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 4,583,000          
Tampa, FL - Horizon [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - Horizon [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - LakePointe One [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 17,726,000     17,726,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 46,205,000     46,205,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,106,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       89,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       44,010,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,106,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       44,099,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 46,205,000     46,205,000    
SEC Schedule III, Real Estate Accumulated Depreciation 17,726,000     17,726,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 46,205,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 17,726,000          
Tampa, FL - LakePointe One [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - LakePointe One [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - LakePointe Two [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 9,845,000     9,845,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 32,736,000     32,736,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,000,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       15,848,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       672,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       14,216,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,672,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       30,064,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 32,736,000     32,736,000    
SEC Schedule III, Real Estate Accumulated Depreciation 9,845,000     9,845,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 32,736,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 9,845,000          
Tampa, FL - LakePointe Two [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - LakePointe Two [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - Lakeside [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 4,169,000     4,169,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 12,276,000     12,276,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       7,369,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       4,907,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       12,276,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 12,276,000     12,276,000    
SEC Schedule III, Real Estate Accumulated Depreciation 4,169,000     4,169,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 12,276,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 4,169,000          
Tampa, FL - Lakeside [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - Lakeside [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - Lakeside/Parkside Garage [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,255,000     1,255,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 5,587,000     5,587,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       5,587,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       5,587,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 5,587,000     5,587,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,255,000     1,255,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 5,587,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,255,000          
Tampa, FL - Lakeside/Parkside Garage [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - Lakeside/Parkside Garage [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - One Harbour Place [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 12,161,000     12,161,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 34,375,000     34,375,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,016,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       25,252,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       7,107,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,016,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       32,359,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 34,375,000     34,375,000    
SEC Schedule III, Real Estate Accumulated Depreciation 12,161,000     12,161,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 34,375,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 12,161,000          
Tampa, FL - One Harbour Place [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - One Harbour Place [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - Parkside [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 5,740,000     5,740,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 12,430,000     12,430,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       9,407,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       3,023,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       12,430,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 12,430,000     12,430,000    
SEC Schedule III, Real Estate Accumulated Depreciation 5,740,000     5,740,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 12,430,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 5,740,000          
Tampa, FL - Parkside [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - Parkside [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - Pavilion [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 8,885,000     8,885,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 20,411,000     20,411,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       16,394,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       4,017,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       20,411,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 20,411,000     20,411,000    
SEC Schedule III, Real Estate Accumulated Depreciation 8,885,000     8,885,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 20,411,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 8,885,000          
Tampa, FL - Pavilion [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - Pavilion [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - Pavilion Parking Garage [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,288,000     2,288,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 5,682,000     5,682,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       5,682,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       5,682,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 5,682,000     5,682,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,288,000     2,288,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 5,682,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,288,000          
Tampa, FL - Pavilion Parking Garage [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - Pavilion Parking Garage [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - Spectrum [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 9,450,000     9,450,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 22,433,000     22,433,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,454,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       14,502,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       6,477,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,454,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       20,979,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 22,433,000     22,433,000    
SEC Schedule III, Real Estate Accumulated Depreciation 9,450,000     9,450,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 22,433,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 9,450,000          
Tampa, FL - Spectrum [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - Spectrum [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - Tower Place [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 11,089,000     11,089,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 27,486,000     27,486,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       3,218,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       19,898,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       4,370,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       3,218,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       24,268,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 27,486,000     27,486,000    
SEC Schedule III, Real Estate Accumulated Depreciation 11,089,000     11,089,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 27,486,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 11,089,000          
Tampa, FL - Tower Place [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - Tower Place [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - Westshore Square [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 3,161,000     3,161,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 7,970,000     7,970,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,126,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       5,186,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,658,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,126,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       6,844,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,970,000     7,970,000    
SEC Schedule III, Real Estate Accumulated Depreciation 3,161,000     3,161,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 7,970,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 3,161,000          
Tampa, FL - Westshore Square [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - Westshore Square [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - Independence Park Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 0     0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       4,943,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       (4,943,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 0     0    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 0          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance 0          
Tampa, FL - Independence Park I [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation 2,219,000     2,219,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 11,934,000     11,934,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       2,531,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       4,526,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       4,877,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,531,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       9,403,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 11,934,000     11,934,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,219,000     2,219,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 11,934,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,219,000          
Tampa, FL - Independence Park I [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - Independence Park I [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - Meridian I [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,222,000     2,222,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 25,514,000     25,514,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,849,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       22,363,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       1,302,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,849,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       23,665,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 25,514,000     25,514,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,222,000     2,222,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 25,514,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,222,000          
Tampa, FL - Meridian I [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - Meridian I [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - Meridian II [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 2,278,000     2,278,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 22,894,000     22,894,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       1,302,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       19,588,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,004,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,302,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       21,592,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 22,894,000     22,894,000    
SEC Schedule III, Real Estate Accumulated Depreciation 2,278,000     2,278,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 22,894,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 2,278,000          
Tampa, FL - Meridian II [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - Meridian II [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - Suntrust Financial Centre [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,298,000     1,298,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 104,118,000     104,118,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       1,980,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       102,138,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       1,980,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       102,138,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 104,118,000     104,118,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,298,000     1,298,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 104,118,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,298,000          
Tampa, FL - Suntrust Financial Centre [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - Suntrust Financial Centre [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Tampa, FL - Suntrust Financial Land [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 0     0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III 2,242,000     2,242,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       0    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       2,225,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       17,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       2,225,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       17,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 2,242,000     2,242,000    
SEC Schedule III, Real Estate Accumulated Depreciation 0     0    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance 2,242,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 0          
Tampa, FL - Suntrust Financial Land [Member] | Minimum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years          
Tampa, FL - Suntrust Financial Land [Member] | Maximum [Member]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years          
Total Real Estate and Accumulated Depreciation [Member]            
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]            
SEC Schedule III, Real Estate Accumulated Depreciation $ 1,138,378,000     1,138,378,000    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]            
Total real estate assets per Schedule III [2] 4,915,858,000     4,915,858,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost [Abstract]            
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land       506,874,000    
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements       2,171,535,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]            
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land       22,845,000    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements       2,214,604,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]            
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land       529,719,000    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements       4,386,139,000    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets [2] 4,915,858,000     4,915,858,000    
SEC Schedule III, Real Estate Accumulated Depreciation 1,138,378,000     $ 1,138,378,000    
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]            
Real estate assets, ending balance [2] 4,915,858,000          
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]            
Accumulated depreciation, ending balance $ 1,138,378,000          
[1] These assets are pledged as collateral for a $112.2 million first mortgage loan.
[2] The tax basis of aggregate land and buildings and tenant improvements as of December 31, 2015 is $4.5 billion.