OFFICE PROPERTIES INCOME TRUST, 10-K filed on 2/13/2025
Annual Report
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Cover Page - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Feb. 12, 2025
Jun. 28, 2024
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2024    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-34364    
Entity Registrant Name OFFICE PROPERTIES INCOME TRUST    
Entity Incorporation, State or Country Code MD    
Entity Tax Identification Number 26-4273474    
Entity Address, Address Line One Two Newton Place,    
Entity Address, Address Line Two 255 Washington Street,    
Entity Address, Address Line Three Suite 300,    
Entity Address, City or Town Newton,    
Entity Address, State or Province MA    
Entity Address, Postal Zip Code 02458-1634    
City Area Code 617    
Local Phone Number 219-1440    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 100.3
Entity Common Stock, Shares Outstanding   69,824,743  
Documents Incorporated by Reference
Certain information required by Items 10, 11, 12, 13 and 14 of Part III of this Annual Report on Form 10-K is incorporated by reference to our definitive Proxy Statement for the 2025 Annual Meeting of Shareholders, to be filed with the Securities and Exchange Commission within 120 days after the fiscal year ended December 31, 2024.
   
Entity Central Index Key 0001456772    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Amendment Flag false    
Common Shares      
Document Information [Line Items]      
Title of 12(b) Security Common Shares of Beneficial Interest    
Trading Symbol OPI    
Security Exchange Name NASDAQ    
6.375% Senior Notes Due 2050      
Document Information [Line Items]      
Title of 12(b) Security 6.375% Senior Notes due 2050    
Trading Symbol OPINL    
Security Exchange Name NASDAQ    
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Audit Information
12 Months Ended
Dec. 31, 2024
Auditor Information [Abstract]  
Auditor Name Deloitte & Touche LLP
Auditor Location Boston, Massachusetts
Auditor Firm ID 34
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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Real estate properties:    
Land $ 711,039 $ 786,310
Buildings and improvements 2,946,520 3,279,369
Total real estate properties, gross 3,657,559 4,065,679
Accumulated depreciation (618,650) (650,179)
Total real estate properties, net 3,038,909 3,415,500
Assets of properties held for sale 32,199 37,310
Investments in unconsolidated joint ventures 17,370 18,128
Acquired real estate leases, net 193,739 263,498
Cash and cash equivalents 261,318 12,315
Restricted cash 13,847 14,399
Rents receivable 155,668 133,264
Deferred leasing costs, net 97,642 86,971
Other assets, net 11,594 8,284
Total assets 3,822,286 3,989,669
LIABILITIES AND SHAREHOLDERS’ EQUITY    
Unsecured debt, net 662,277 2,400,478
Secured debt, net 1,872,357 172,131
Liabilities of properties held for sale 765 2,525
Accounts payable and other liabilities 118,689 140,166
Due to related persons 5,869 7,025
Assumed real estate lease obligations, net 9,525 11,665
Total liabilities 2,669,482 2,733,990
Commitments and contingencies
Shareholders’ equity:    
Common shares of beneficial interest, $.01 par value: 200,000,000 shares authorized, 69,824,743 and 48,755,415 shares issued and outstanding, respectively 698 488
Additional paid in capital 2,656,548 2,621,493
Cumulative net (loss) income (35,933) 100,174
Cumulative common distributions (1,468,509) (1,466,476)
Total shareholders’ equity 1,152,804 1,255,679
Total liabilities and shareholders’ equity $ 3,822,286 $ 3,989,669
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CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Dec. 31, 2024
Dec. 31, 2023
Statement of Financial Position [Abstract]    
Common shares of beneficial interest, par value (in dollars per share) $ 0.01 $ 0.01
Common shares of beneficial interest, shares authorized (in shares) 200,000,000 200,000,000
Common shares of beneficial interest, shares issued (in shares) 69,824,743 48,755,415
Common shares of beneficial interest, shares outstanding (in shares) 69,824,743 48,755,415
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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($)
shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Income Statement [Abstract]    
Rental income $ 501,979 $ 533,553
Expenses:    
Real estate taxes 62,369 62,831
Utility expenses 27,467 26,778
Other operating expenses 107,400 109,883
Depreciation and amortization 194,737 209,254
Loss on impairment of real estate 181,578 11,299
Transaction related costs 1,144 31,816
General and administrative 21,128 22,731
Total expenses 595,823 474,592
(Loss) gain on sale of real estate (7,410) 3,780
Interest and other income 3,668 1,039
Interest expense (including net amortization of debt premiums, discounts and issuance costs of $13,463 and $9,209, respectively) (163,745) (110,647)
Gain on early extinguishment of debt 126,185 0
Loss before income tax expense and equity in net losses of investees (135,146) (46,867)
Income tax expense (203) (351)
Equity in net losses of investees (758) (3,031)
Loss on impairment of equity method investment 0 (19,183)
Net loss $ (136,107) $ (69,432)
Weighted average common shares outstanding (basic) (in shares) 51,806 48,389
Weighted average common shares outstanding (diluted) (in shares) 51,806 48,389
Per common share amounts (basic and diluted):    
Net loss (basic) (in dollars per share) $ (2.63) $ (1.44)
Net loss (diluted) (in dollars per share) $ (2.63) $ (1.44)
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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Income Statement [Abstract]    
Net amortization of debt premiums, discounts and issuance costs $ 13,463 $ 9,209
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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Common Shares
Additional Paid In Capital
Cumulative Net Income (Loss)
Cumulative Common Distributions
Balance beginning (in shares) at Dec. 31, 2022   48,565,644      
Balance beginning at Dec. 31, 2022 $ 1,386,335 $ 486 $ 2,619,532 $ 169,606 $ (1,403,289)
Increase (Decrease) in Shareholders' Equity          
Common share grants (in shares)   241,800      
Common share grants 2,268 $ 2 2,266    
Common share forfeitures and repurchases (in shares)   (52,029)      
Common share forfeitures and repurchases (305)   (305)    
Net loss (69,432)     (69,432)  
Distributions to common shareholders (63,187)       (63,187)
Balance ending (in shares) at Dec. 31, 2023   48,755,415      
Balance ending at Dec. 31, 2023 1,255,679 $ 488 2,621,493 100,174 (1,466,476)
Increase (Decrease) in Shareholders' Equity          
Issuance of common shares (in shares)   20,505,468      
Issuance of common shares 33,796 $ 205 33,591    
Common share grants (in shares)   649,198      
Common share grants 1,661 $ 6 1,655    
Common stock repurchases (in shares)   (85,338)      
Common share repurchases (192) $ (1) (191)    
Net loss (136,107)     (136,107)  
Distributions to common shareholders (2,033)       (2,033)
Balance ending (in shares) at Dec. 31, 2024   69,824,743      
Balance ending at Dec. 31, 2024 $ 1,152,804 $ 698 $ 2,656,548 $ (35,933) $ (1,468,509)
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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net loss $ (136,107) $ (69,432)
Adjustments to reconcile net loss to net cash provided by operating activities:    
Depreciation 118,710 107,460
Net amortization of debt premiums, discounts and issuance costs 13,463 9,209
Amortization of acquired real estate leases and assumed real estate lease obligations, net 64,636 92,805
Amortization of deferred leasing costs 12,990 10,063
Loss (gain) on sale of real estate 7,410 (3,780)
Loss on impairment of real estate 181,578 11,299
Gain on early extinguishment of debt (138,603) 0
Straight line rental income (31,102) (26,194)
Other non-cash expenses, net 575 1,168
Equity in net losses of investees 758 3,031
Impairment loss on equity method investment 0 19,183
Change in assets and liabilities:    
Rents receivable 5,999 (2,376)
Deferred leasing costs (22,969) (23,510)
Other assets 1,377 (1,495)
Accounts payable and other liabilities (10,392) 13,739
Due to related persons (1,156) 556
Net cash provided by operating activities 67,167 141,726
CASH FLOWS FROM INVESTING ACTIVITIES:    
Real estate acquisitions 0 (2,785)
Real estate improvements (123,376) (229,004)
Proceeds from sale of property, net 189,986 42,181
Contributions to unconsolidated joint ventures 0 (5,213)
Net cash used in investing activities 66,610 (194,821)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Repayment of mortgage notes payable 0 (50,000)
Proceeds from issuance of mortgage notes payable 0 177,320
Repayment of senior unsecured notes (350,242) 0
Proceeds from issuance of senior secured notes 338,986 0
Borrowings on revolving credit facility 452,000 240,000
Repayments on revolving credit facility (332,000) (230,000)
Borrowings on secured term loan 100,000 0
Payment of debt issuance costs (91,845) (6,279)
Repurchases of common shares (192) (294)
Distribution to common shareholders (2,033) (63,187)
Net cash provided by (used in) financing activities 114,674 67,560
Increase in cash, cash equivalents and restricted cash 248,451 14,465
Cash, cash equivalents and restricted cash at beginning of period 26,714 12,249
Cash, cash equivalents and restricted cash at end of period 275,165 26,714
SUPPLEMENTAL CASH FLOW INFORMATION:    
Interest paid 145,326 107,645
Income taxes paid 361 478
NON-CASH INVESTING ACTIVITIES:    
Real estate improvements accrued, not paid 16,767 32,231
Capitalized interest 969 7,634
NON-CASH FINANCING ACTIVITIES:    
Extinguishment of unsecured senior notes in exchange for senior secured notes and common shares (180,548) 0
SUPPLEMENTAL DISCLOSURE OF CASH, CASH EQUIVALENTS AND RESTRICTED CASH:    
Cash and cash equivalents 261,318 12,315
Restricted cash 13,847 14,399
Total cash, cash equivalents and restricted cash shown in the consolidated statements of cash flows $ 275,165 $ 26,714
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Business
12 Months Ended
Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Business Business
Office Properties Income Trust and its consolidated subsidiaries, or OPI, we, us or our, is a real estate investment trust, or REIT, formed in 2009 under Maryland law.
As of December 31, 2024, our wholly owned properties were comprised of 128 properties containing approximately 17,763,000 rentable square feet and we had a noncontrolling ownership interest of 51% in an unconsolidated joint venture that owned two properties totaling approximately 346,000 rentable square feet.
Going Concern
Our portfolio has been adversely affected by shifts in office space utilization, including increased remote work arrangements and tenants consolidating their real estate footprint. Demand for office space continues to face headwinds and declining rents and increasing costs to relet space when tenants can be identified continue to impact the market. In addition, there are limited debt or equity financing alternatives available to us to refinance our debt and financing sources we have utilized have increased our cost of capital. The duration and ultimate impact of these factors on our properties and our business remains uncertain and subject to change; however, these conditions continue to have a significant negative impact on our results of operations, financial position and cash flows. As of February 13, 2025, our total available liquidity was comprised of $113,000 of cash and, in addition to long-term debt, our near-term obligations include outstanding lease obligations of $81,865 and principal debt repayments of $26,000 in 2025 and $291,488 in 2026.
Given the limited alternatives available to us to obtain debt or equity to refinance our maturing debt, the illiquid nature of our real estate assets and our ability to incur additional debt while maintaining compliance with the financial covenants in our existing debt agreements, we continue to work with our financial advisor, Moelis & Company LLC, to evaluate strategies to address our upcoming debt obligations, including through asset sales, future debt exchanges or equity issuances. However, we are not able to conclude that it is probable that these strategies will allow us to satisfy our upcoming debt obligations and maturities. If we are unable to consummate transactions allowing us to refinance our maturing debt, our Board of Trustees may consider a reorganization in a bankruptcy court. As a result of the foregoing, we have concluded that there is substantial doubt about our ability to continue as a going concern.
The accompanying consolidated financial statements are prepared in accordance with generally accepted accounting principles applicable to a going concern, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business, and do not include any adjustments relating to the recoverability and classification of recorded asset amounts or the amounts and classification of liabilities that might result from the outcome of this uncertainty.
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Summary of Significant Accounting Policies
12 Months Ended
Dec. 31, 2024
Accounting Policies [Abstract]  
Summary of Significant Accounting Policies Summary of Significant Accounting Policies
Basis of Presentation. These consolidated financial statements include the accounts of us and our subsidiaries, all of which are wholly owned directly or indirectly by us. All intercompany transactions and balances with or among our consolidated subsidiaries have been eliminated.
Real Estate Properties. We record our properties at cost and provide depreciation on real estate investments on a straight line basis over estimated useful lives generally ranging from 7 to 40 years. In some circumstances, we engage independent real estate appraisal firms to provide market information and evaluations which are relevant to our purchase price allocations and determinations of useful lives; however, we are ultimately responsible for the purchase price allocations and determinations of useful lives.
We allocate the purchase prices of our properties to land, buildings and improvements based on determinations of the relative fair values of these assets assuming the properties are vacant. We determine the fair value of each property using methods similar to those used by independent appraisers, which may involve estimated cash flows that are based on a number of factors, including capitalization rates and discount rates, among others. We allocate a portion of the purchase price of our properties to above market and below market leases based on the present value (using an interest rate which reflects the risks associated with acquired in place leases at the time each property was acquired by us) of the difference, if any, between (i) the contractual amounts to be paid pursuant to the acquired in place leases and (ii) our estimates of fair market lease rates for the corresponding leases, measured over a period equal to the terms of the respective leases. We allocate a portion of the purchase price to acquired in place leases and tenant relationships based upon market estimates to lease up the property based on the leases in place at the time of purchase. We allocate this aggregate value between acquired in place lease values and tenant relationships based on our evaluation of the specific characteristics of each tenant’s lease. However, we have not separated the value of tenant relationships from the value of acquired in place leases because such value and related amortization expense is immaterial to the accompanying consolidated financial statements. In making these allocations, we consider factors such as estimated carrying costs during the expected lease up periods, including real estate taxes, insurance and other operating income and expenses and costs, such as leasing commissions, legal and other related expenses, to execute similar leases in current market conditions at the time a property was acquired by us. If the value of tenant relationships becomes material in the future, we may separately allocate those amounts and amortize the allocated amounts over the estimated life of the relationships. For transactions that qualify as business combinations, we allocate the excess, if any, of the consideration over the fair value of the assets acquired to goodwill.
We amortize capitalized above market lease values (included in acquired real estate leases, net in our consolidated balance sheets) and below market lease values (presented as assumed real estate lease obligations, net in our consolidated balance sheets) as a reduction or increase, respectively, to rental income over the terms of the associated leases. Such amortization resulted in net increases to rental income of $402 and $252 during the years ended December 31, 2024 and 2023, respectively. We amortize the value of acquired in place leases (included in acquired real estate leases, net in our consolidated balance sheets), exclusive of the value of above market and below market acquired in place leases, over the terms of the associated leases. Such amortization, which is included in depreciation and amortization expense, amounted to $65,039 and $93,057 during the years ended December 31, 2024 and 2023, respectively. If a lease is terminated prior to its stated expiration, we write off the unamortized amounts relating to that lease.
As of December 31, 2024 and 2023, our acquired real estate leases and assumed real estate lease obligations, excluding properties classified as held for sale, were as follows:
 December 31,
20242023
Acquired real estate leases:
Capitalized above market lease values$7,715 $14,758 
Less: accumulated amortization(5,814)(10,876)
Capitalized above market lease values, net1,901 3,882 
Lease origination value433,347 572,766 
Less: accumulated amortization(241,509)(313,150)
Lease origination value, net191,838 259,616 
Acquired real estate leases, net$193,739 $263,498 
Assumed real estate lease obligations:
Capitalized below market lease values$14,177 $25,678 
Less: accumulated amortization(4,652)(14,013)
Assumed real estate lease obligations, net$9,525 $11,665 
As of December 31, 2024, the weighted average amortization periods for capitalized above market leases, lease origination value and capitalized below market lease values were 4.0 years, 7.3 years and 12.0 years, respectively. Future amortization of net intangible lease assets and liabilities, to be recognized over the current terms of the associated leases as of December 31,
2024 are estimated to be $42,347 in 2025, $34,401 in 2026, $27,444 in 2027, $14,981 in 2028, $13,462 in 2029 and $51,579 thereafter.
We regularly evaluate whether events or changes in circumstances have occurred that could indicate an impairment in the value of long lived assets. Impairment indicators may include declining tenant occupancy, lack of progress releasing vacant space, tenant bankruptcies, low long term prospects for improvement in property performance, weak or declining tenant profitability, cash flow or liquidity, our decision to dispose of an asset before the end of its estimated useful life and legislative, market or industry changes that could permanently reduce the value of a property. If there is an indication that the carrying value of an asset is not recoverable, we estimate the projected undiscounted cash flows to determine if an impairment loss should be recognized. The future net undiscounted cash flows are subjective and are based in part on assumptions regarding hold periods, market rents and terminal capitalization rates. We determine the amount of any impairment loss by comparing the historical carrying value to estimated fair value. We estimate fair value through an evaluation of recent financial performance and projected discounted cash flows using standard industry valuation techniques. In addition to consideration of impairment upon the events or changes in circumstances described above, we regularly evaluate the remaining useful lives of our long lived assets. If we change our estimate of the remaining useful lives, we allocate the carrying value of the affected assets over their revised remaining useful lives.
Cash and Cash Equivalents. We consider highly liquid investments with original maturities of three months or less at the date of purchase to be cash equivalents.
Restricted Cash. Restricted cash consists of amounts escrowed for future real estate taxes, insurance, leasing costs, capital expenditures and debt service, as required by certain of our mortgage debts.
Deferred Leasing Costs. Deferred leasing costs include brokerage costs and inducements associated with our entering leases. We amortize deferred leasing costs, which are included in depreciation and amortization expense, and inducements, which are included as a reduction to rental income, on a straight line basis over the terms of the respective leases. Legal costs associated with the execution of our leases are expensed as incurred and included in general and administrative expenses in our consolidated statements of comprehensive income (loss). We recorded amortization of deferred leasing costs of $10,988 and $8,737, and reductions to rental income related to the amortization of inducements of $2,003 and $1,326 for the years ended December 31, 2024 and 2023, respectively. Deferred leasing costs, excluding properties classified as held for sale, totaled $127,095 and $113,433 at December 31, 2024 and 2023, respectively, and accumulated amortization of deferred leasing costs totaled $29,453 and $26,462 at December 31, 2024 and 2023, respectively. Future amortization of deferred leasing costs to be recognized during the current terms of our existing leases as of December 31, 2024 are estimated to be $12,751 in 2025, $11,948 in 2026, $11,203 in 2027, $10,520 in 2028, $9,637 in 2029 and $41,583 thereafter.
Debt Issuance Costs. Costs related to the issuance or assumption of debt are capitalized and amortized to interest expense over the terms of the respective loans. Debt issuance costs, net of accumulated amortization, for our $325,000 secured revolving credit facility and our prior $750,000 unsecured revolving credit facility, or our prior revolving credit facility, are included in other assets in our consolidated balance sheets. As of December 31, 2024, debt issuance costs for our revolving credit facility were $7,838 and accumulated amortization of debt issuance costs for our revolving credit facility was $2,396. As of December 31, 2023, debt issuance costs for our prior revolving credit facility were $5,328 and accumulated amortization of debt issuance costs for our prior revolving credit facility was $5,240. Debt issuance costs, net of accumulated amortization, for our senior notes, term loan and mortgage notes payable are presented as a direct deduction from the associated debt liability in our consolidated balance sheets. As of December 31, 2024 and 2023, debt issuance costs, net of accumulated amortization, for our senior notes, term loan and mortgage notes payable totaled $65,802 and $16,623, respectively. Future amortization of debt issuance costs to be recognized with respect to our revolving credit facility and term loan, senior notes and mortgage notes payable as of December 31, 2024 are estimated to be $22,519 in 2025, $22,192 in 2026, $10,086 in 2027, $7,310 in 2028, $4,268 in 2029 and $4,869 thereafter.
Equity Method Investments. As of December 31, 2024, we had a noncontrolling ownership interest of 51% in an unconsolidated joint venture that owned two properties. The properties owned by the joint venture were encumbered by $50,000 of mortgage indebtedness. We did not control the activities that are most significant to the joint venture and, as a result, we accounted for our investment in the joint venture under the equity method of accounting. See Note 4 for more information regarding our unconsolidated joint ventures.
We periodically evaluate our equity method investments for possible indicators of other than temporary impairment whenever events or changes in circumstances indicate the carrying amount of the investment might not be recoverable. These
indicators may include the length of time and the extent to which the market value of our investment is below our carrying value, the financial condition of our investees, our intent and ability to be a long term holder of the investment and other considerations. If the decline in fair value is judged to be other than temporary, we record an impairment charge to adjust the basis of the investment to its estimated fair value.
Revenue Recognition. We are a lessor of commercial office properties. Our leases provide our tenants with the contractual right to use and economically benefit from all of the physical space specified in the leases; therefore, we have determined to evaluate our leases as lease arrangements.
Our leases provide for base rent payments and in addition may include variable payments. Rental income from operating leases, including any payments derived by index or market-based indices, is recognized on a straight line basis over the lease term when we have determined that the collectability of substantially all of the lease payments is probable. Some of our leases have options to extend or terminate the lease exercisable at the option of our tenants, which are considered when determining the lease term. Allowances for bad debts are recognized as a direct reduction of rental income.
Certain of our leases contain non-lease components, such as property level operating expenses and capital expenditures reimbursed by our tenants as well as other required lease payments. We have made the policy election to not separate the lease and non-lease components because (i) the lease components are operating leases and (ii) the timing and pattern of recognition of the non-lease components are the same as those of the lease components. We apply Accounting Standards Codification 842, Leases, to the combined component. Income derived by our leases is recorded in rental income in our consolidated statements of comprehensive income (loss).
Certain tenants are obligated to pay directly their obligations under their leases for insurance, real estate taxes and certain other expenses. These obligations, which have been assumed by the tenants under the terms of their respective leases, are not reflected in our consolidated financial statements. To the extent any tenant responsible for any such obligations under the applicable lease defaults on such lease or if it is deemed probable that the tenant will fail to pay for such obligations, we would record a liability for such obligations. See Note 5 for more information regarding our leases.
Income Taxes. We have elected to be taxed as a REIT under the United States Internal Revenue Code of 1986, as amended, and, accordingly, we generally will not be subject to federal income taxes provided we distribute our taxable income and meet certain other requirements to qualify for taxation as a REIT. We are, however, subject to certain state and local taxes.
Per Common Share Amounts. We calculate basic earnings per common share using the two class method. We calculate diluted earnings per share using the more dilutive of the two class method or the treasury stock method. Unvested share awards and other potentially dilutive common shares, together with the related impact on earnings, are considered when calculating diluted earnings per share.
Use of Estimates. Preparation of these financial statements in conformity with GAAP requires us to make estimates and assumptions that may affect the amounts reported in these consolidated financial statements and related notes. The actual results could differ from these estimates. Significant estimates in the consolidated financial statements include purchase price allocations, useful lives of fixed assets and assessment of impairment of real estate and the related intangibles.
New Accounting Pronouncements.In November 2023, the Financial Accounting Standards Board, or FASB, issued Accounting Standards Update, or ASU, No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, which requires public entities, including those with a single reportable segment, to: (i) provide disclosures of significant segment expenses and other segment items if they are regularly provided to the chief operating decision maker, or the CODM, and included in each reported measure of segment profit or loss; (ii) provide all annual disclosures about a reportable segment’s profit or loss and assets currently required by Accounting Standards Codification 280, Segment Reporting, in interim periods; and (iii) disclose the CODM’s title and position, as well as an explanation of how the CODM uses the reported measures and other disclosures. ASU No. 2023-07 does not change how a public entity identifies its operating segments, aggregates those operating segments or applies the quantitative thresholds to determine its reportable segments. We adopted ASU No. 2023-07 effective December 31, 2024. As a result we have included additional information related to the required disclosures within Note 12 to our consolidated financial statements.
In December 2024, the FASB issued ASU No. 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statements Expenses, which requires public entities to provide disaggregated disclosure of certain income statement expense captions within the footnotes to the financial statements. ASU No. 2024-03 is effective for fiscal years beginning after December 15, 2026, and interim periods after December 15, 2027, with early adoption permitted. We are currently evaluating the impact ASU 2024-03 will have on our consolidated financial statements.
v3.25.0.1
Per Common Share Amounts
12 Months Ended
Dec. 31, 2024
Earnings Per Share [Abstract]  
Per Common Share Amounts Per Common Share Amounts
The calculation of basic and diluted earnings per share is as follows (amounts in thousands, except per share data):
Year Ended December 31,
20242023
Numerators:
Net loss$(136,107)$(69,432)
Income attributable to unvested participating securities(14)(305)
Net loss used in calculating earnings per common share$(136,121)$(69,737)
Denominators:
Weighted average common shares outstanding - basic and diluted (1)
51,806 48,389 
Net loss per common share - basic and diluted$(2.63)$(1.44)
(1)For the years ended December 31, 2024 and 2023 there were no dilutive common shares.
v3.25.0.1
Real Estate Properties
12 Months Ended
Dec. 31, 2024
Real Estate [Abstract]  
Real Estate Properties Real Estate Properties
As of December 31, 2024, our wholly owned properties were comprised of 128 properties containing approximately 17,763,000 rentable square feet, with an undepreciated carrying value of $3,699,294, including $41,735 classified as held for sale. We also had a noncontrolling ownership interest of 51% in an unconsolidated joint venture that owned two properties containing approximately 346,000 rentable square feet. We generally lease space at our properties on a gross lease, modified gross lease or net lease basis pursuant to fixed term contracts expiring between 2025 and 2053. Some of our leases generally require us to pay all or some property operating expenses and to provide all or most property management services. During the year ended December 31, 2024, we entered into 52 leases for approximately 2,042,000 rentable square feet for a weighted (by rentable square feet) average lease term of 8.8 years and we made commitments of $95,935 for leasing related costs. As of December 31, 2024, we had estimated unspent leasing related obligations of $81,865.
Acquisition Activities
2024 Acquisition Activities
We did not acquire any properties during the year ended December 31, 2024.
2023 Acquisition Activities
In December 2023, we acquired a vacant land parcel adjacent to a property we own in Irving, TX for $2,750, excluding acquisition related costs.
Disposition Activities
The sales completed during the years ended December 31, 2024 and 2023, as presented in the tables below, do not represent a strategic shift in our business. As a result, the results of operations of these properties are included in continuing operations through the date of sale in our consolidated statements of comprehensive income (loss).
2024 Disposition Activities
During the year ended December 31, 2024, we sold 24 properties containing approximately 2,789,000 rentable square feet for an aggregate sales price of $199,351, excluding closing costs.
Date of SaleNumber of Properties LocationRentable Square Feet
Gross
 Sales Price (1)
Gain (Loss) on Sale of Real Estate
(Loss) on Impairment of Real Estate
March 20241
Chicago, IL (2)
248,000 $38,500 $(2,448)$— 
July 20241Malden, MA126,000 7,800 (10)(13,973)
August 20243Indianapolis, IN434,000 10,100 729 (50,851)
September 20241Atlanta, GA126,000 17,610 8,690 — 
September 20241San Jose, CA64,000 10,800 (954)(819)
November 20241Colorado Springs, CO156,000 26,164 12,962 — 
November 20241Rocklin, CA19,000 2,627 1,084 — 
November 20243Lakewood, CO213,000 8,100 (9,132)— 
December 20245Atlanta, GA379,000 18,100 79 (21,937)
December 20241Florence, KY168,000 3,250 (6,966)— 
December 20241Sacramento, CA338,000 21,000 (6,502)(33,902)
December 20241Reston, VA131,000 7,200 (869)(18,540)
December 20241Kansas City, MO87,000 8,000 32 (4,370)
December 20241Westford, MA175,000 5,100 (6,481)(3,554)
December 20242Provo, UT125,000 15,000 2,376 — 
242,789,000 $199,351 $(7,410)$(147,946)
(1)Gross sales price is the gross contract price, excluding closing costs.
(2)Property was classified as held for sale as of December 31, 2023. We recorded an $11,299 loss on impairment of real estate during the year ended December 31, 2023 to reduce the carrying value of this property to its estimated fair value less costs to sell as of December 31, 2023.
As of December 31, 2024, we had six properties, that are under agreement to sell for an aggregate sales price of $54,763, excluding closing costs, five of which are classified as held for sale in our consolidated balance sheet, as summarized below:
Date of Sale AgreementNumber of PropertiesLocationRentable Square Feet
Gross Sales Price (1)
(Loss) on Impairment of Real Estate
September 20242Santa Clara, CA149,000 $21,150 $(11,041)
October 20242Tempe, AZ101,000 10,738 — 
December 20241Detroit, MI56,000 4,750 (8,001)
December 20241
Reston, VA (2)
275,000 18,125 — 
6581,000 $54,763 $(19,042)
(1)Gross sales price is the contract price, excluding closing costs.
(2)Property did not meet held for sale criteria as of December 31, 2024.
The pending sales in the preceding table are subject to conditions; accordingly, we cannot be sure that we will complete these sales or that these sales will not be delayed or the pricing will not change. See Note 10 for more information regarding our properties held for sale.
We also recorded a $12,017 loss on impairment of real estate to reduce the carrying value of one property that was classified as held for sale to its estimated fair value, less costs to sell as of June 30, 2024. Subsequently, we removed this property from held for sale status due to a change of plan for sale and recorded an additional loss on impairment of $2,573 to reduce the carrying value of this property to its estimated fair value as of September 30, 2024.
In February 2025, we sold one additional property with approximately 100,000 rentable square feet for a sale price of $5,750, excluding closing costs. This property previously secured our March 2027 Notes. Accordingly, we expect to use the net proceeds of this sale to redeem a portion of our March 2027 Notes in accordance with the terms of the indenture governing the March 2027 Notes.
2023 Disposition Activities
During the year ended December 31, 2023, we sold eight properties containing approximately 553,000 rentable square feet for an aggregate sales price of $44,874, excluding closing costs.
Date of SaleNumber of Properties LocationRentable Square Feet
Gross
 Sales Price (1)
Gain (Loss) on Sale of Real Estate
January 20233
Richmond, VA (2)
89,000 $5,350 $2,548 
April 20231Phoenix, AZ107,000 4,900 511 
June 20231Vernon Hills, IL100,000 2,825 (2,816)
September 20231Windsor Mill, MD80,000 10,500 244 
October 20231Santa Clara, CA66,000 16,049 705 
November 20231Chelmsford, MA111,000 5,250 2,588 
8properties553,000 $44,874 $3,780 
(1)Gross sales price is the gross contract price, excluding closing costs.
(2)Properties were classified as held for sale as of December 31, 2022.
Unconsolidated Joint Ventures
As of December 31, 2024, we owned an interest in one joint venture that owned two properties. We accounted for this investment under the equity method of accounting.
During the year ended December 31, 2024, our 1750 H Street, NW joint venture did not have sufficient cash flow to pay its monthly debt service resulting in an event of default under the mortgage, and the non-recourse mortgage lender to this joint venture completed a foreclosure of the property, after which, the joint venture ceased to have an economic interest in the property. We wrote off our full investment in this joint venture as of December 31, 2023 and did not make capital contributions to this joint venture during the year ended December 31, 2024. Accordingly, we did not record our proportionate share of operating results of the joint venture for the year ended December 31, 2024.
As of December 31, 2024 and 2023, our investments in our unconsolidated joint ventures consisted of the following:
OPI OwnershipOPI Carrying Value of Investments at December 31, Number of PropertiesLocationRentable Square Feet
Joint Venture20242023
Prosperity Metro Plaza51%$17,370 $18,128 2Fairfax, VA346,000
1750 H Street, NW50%— — 1Washington, D.C.125,000
Total $17,370 $18,128 3471,000
The following table provides a summary of the mortgage debt of our unconsolidated joint ventures as of December 31, 2024 and 2023:
Principal Balance at December 31,
Joint Venture
 Interest Rate (1)
Maturity Date
2024 (2)
2023 (2)
Prosperity Metro Plaza4.09%12/1/2029$50,000 $50,000 
1750 H Street, NW3.69%8/1/2027— 32,000 
Weighted Average / Total3.93%$50,000 $82,000 
(1)Includes the effect of mark to market purchase accounting.
(2)Reflects the entire balance of the debt secured by the properties and is not adjusted to reflect the interests in the joint ventures we did not own. None of the debt is recourse to us.
As of December 31, 2024, the unamortized basis difference of our Prosperity Metro Plaza joint venture of $673 was primarily attributable to the difference between the amount we paid to purchase our interest in this joint venture, including transaction costs, and the historical carrying value of the net assets of this joint venture. This difference is being amortized over the remaining useful life of the related property and the resulting amortization expense is included in equity in net losses of investees in our consolidated statements of comprehensive income (loss).
v3.25.0.1
Leases
12 Months Ended
Dec. 31, 2024
Leases [Abstract]  
Leases Leases
Rental income from operating leases, including any payments derived by index or market-based indices, is recognized on a straight line basis over the lease term once we have determined that the collectability of substantially all of the lease payments is probable. We increased rental income to record revenue on a straight line basis by $31,102 and $26,194 for the years ended December 31, 2024 and 2023, respectively. Rents receivable, excluding properties classified as held for sale, included $140,132 and $112,440 of straight line rent receivables at December 31, 2024 and 2023, respectively.
We do not include in our measurement of our lease receivables certain variable payments, including payments determined by changes in the index or market-based indices after the inception of the lease, certain tenant reimbursements and other income until the specific events that trigger the variable payments have occurred. Such payments totaled $86,903 and $88,173 for the years ended December 31, 2024 and 2023, respectively, of which tenant reimbursements totaled $82,647 and $82,885, respectively.
The following operating lease maturity analysis presents the future contractual lease payments to be received by us through 2053 as of December 31, 2024:
YearAmount
2025$318,530 
2026310,043 
2027291,562 
2028259,443 
2029249,250 
Thereafter1,296,713 
Total$2,725,541 
As of December 31, 2024, tenants representing approximately 1.2% of our total operating lease maturities had exercisable rights to terminate their leases before the stated terms of their leases expire. In 2025, 2026, 2027, 2028, 2029, 2030, 2031, 2032, 2034, 2035, 2036, 2037 and 2040, early termination rights become exercisable by other tenants who represented an additional approximately 1.4%, 1.9%, 2.0%, 5.7%, 4.1%, 2.6%, 1.8%, 5.7%, 1.5%, 4.4%, 0.6%, 0.6% and 2.3% of our total operating lease maturities, respectively. In certain circumstances, some leases provide the tenant with the right to terminate if the legislature or other funding authority does not appropriate the funding necessary for the tenant to meet its lease obligations; we have determined the fixed non-cancelable lease term of these leases to be the full term of the lease because we believe the occurrence of early terminations to be a remote contingency based on both our historical experience and our assessments of the likelihood of lease cancellation on a separate lease basis. As of December 31, 2024, five of our tenants had the right to
terminate their leases if the respective legislature or other funding authority does not appropriate the funding necessary for the tenant to meet its obligation. These five tenants represented approximately 2.8% of our total operating lease maturities as of December 31, 2024.
Leases Leases
Rental income from operating leases, including any payments derived by index or market-based indices, is recognized on a straight line basis over the lease term once we have determined that the collectability of substantially all of the lease payments is probable. We increased rental income to record revenue on a straight line basis by $31,102 and $26,194 for the years ended December 31, 2024 and 2023, respectively. Rents receivable, excluding properties classified as held for sale, included $140,132 and $112,440 of straight line rent receivables at December 31, 2024 and 2023, respectively.
We do not include in our measurement of our lease receivables certain variable payments, including payments determined by changes in the index or market-based indices after the inception of the lease, certain tenant reimbursements and other income until the specific events that trigger the variable payments have occurred. Such payments totaled $86,903 and $88,173 for the years ended December 31, 2024 and 2023, respectively, of which tenant reimbursements totaled $82,647 and $82,885, respectively.
The following operating lease maturity analysis presents the future contractual lease payments to be received by us through 2053 as of December 31, 2024:
YearAmount
2025$318,530 
2026310,043 
2027291,562 
2028259,443 
2029249,250 
Thereafter1,296,713 
Total$2,725,541 
As of December 31, 2024, tenants representing approximately 1.2% of our total operating lease maturities had exercisable rights to terminate their leases before the stated terms of their leases expire. In 2025, 2026, 2027, 2028, 2029, 2030, 2031, 2032, 2034, 2035, 2036, 2037 and 2040, early termination rights become exercisable by other tenants who represented an additional approximately 1.4%, 1.9%, 2.0%, 5.7%, 4.1%, 2.6%, 1.8%, 5.7%, 1.5%, 4.4%, 0.6%, 0.6% and 2.3% of our total operating lease maturities, respectively. In certain circumstances, some leases provide the tenant with the right to terminate if the legislature or other funding authority does not appropriate the funding necessary for the tenant to meet its lease obligations; we have determined the fixed non-cancelable lease term of these leases to be the full term of the lease because we believe the occurrence of early terminations to be a remote contingency based on both our historical experience and our assessments of the likelihood of lease cancellation on a separate lease basis. As of December 31, 2024, five of our tenants had the right to
terminate their leases if the respective legislature or other funding authority does not appropriate the funding necessary for the tenant to meet its obligation. These five tenants represented approximately 2.8% of our total operating lease maturities as of December 31, 2024.
v3.25.0.1
Business and Property Management Agreements with RMR
12 Months Ended
Dec. 31, 2024
Related Party Transactions [Abstract]  
Business and Property Management Agreements with RMR Business and Property Management Agreements with RMR
We have no employees. The personnel and various services we require to operate our business are provided to us by The RMR Group LLC, or RMR. We have two agreements with RMR to provide management services to us: (1) a business management agreement, which relates to our business generally; and (2) a property management agreement, which relates to our property level operations.
Management Agreements with RMR. Our management agreements with RMR provide for an annual base management fee, an annual incentive management fee and property management and construction supervision fees, payable in cash, among other terms:
Base Management Fee. The annual base management fee payable to RMR by us for each applicable period is equal to the lesser of:
the sum of (a) 0.5% of the average aggregate historical cost of the real estate assets acquired from a REIT to which RMR provided business management or property management services, or the Transferred Assets, plus (b) 0.7% of the average aggregate historical cost of our real estate investments excluding the Transferred Assets up to $250,000, plus (c) 0.5% of the average aggregate historical cost of our real estate investments excluding the Transferred Assets exceeding $250,000; and
the sum of (a) 0.7% of the average closing price per share of our common shares on the stock exchange on which such shares are principally traded during such period, multiplied by the average number of our common shares outstanding during such period, plus the daily weighted average of the aggregate liquidation preference of each class of our preferred shares outstanding during such period, plus the daily weighted average of the aggregate principal amount of our consolidated indebtedness during such period, or, together, our Average Market Capitalization, up to $250,000, plus (b) 0.5% of our Average Market Capitalization exceeding $250,000.
The average aggregate historical cost of our real estate investments includes our consolidated assets invested, directly or indirectly, in equity interests in or loans secured by real estate and personal property owned in connection with such real estate (including acquisition related costs and costs which may be allocated to intangibles or are unallocated), all before reserves for depreciation, amortization, impairment charges or bad debts or other similar non-cash reserves.
Incentive Management Fee. The incentive management fee which may be earned by RMR for an annual period is calculated as follows:
An amount, subject to a cap based on the value of our common shares outstanding, equal to 12% of the product of:
our equity market capitalization on the last trading day of the year immediately prior to the relevant three year measurement period, and
the amount (expressed as a percentage) by which the total return per share, as defined in the business management agreement and further described below, of our common shareholders (i.e., share price appreciation plus dividends) exceeds the total shareholder return of the applicable index, or the benchmark return per share, for the relevant measurement period. The MSCI U.S. REIT/Office REIT Index is the applicable benchmark index.

For purposes of the total return per share of our common shareholders, share price appreciation for a measurement period is determined by subtracting (1) the closing price of our common shares on The Nasdaq Stock Market LLC, or Nasdaq, on the last trading day of the year immediately before the first year of the applicable measurement period, or the initial share price, from (2) the average closing price of our common shares on the 10 consecutive trading days having the highest average closing prices during the final 30 trading days in the last year of the measurement period.
The calculation of the incentive management fee (including the determinations of our equity market capitalization, initial share price and the total return per share of our common shareholders) is subject to adjustments if we issue or repurchase our common shares, or if our common shares are forfeited, during the measurement period.
No incentive management fee is payable by us unless our total return per share during the measurement period is positive.
The measurement periods are three year periods ending with the year for which the incentive management fee is being calculated.
If our total return per share exceeds 12% per year in any measurement period, the benchmark return per share is adjusted to be the lesser of the total shareholder return of the applicable index for such measurement period and 12% per year, or the adjusted benchmark return per share. In instances where the adjusted benchmark return per share applies, the incentive management fee will be reduced if our total return per share is between 200 basis points and 500 basis points below the applicable index in any year by a low return factor, as defined in the business management agreement, and there will be no incentive management fee paid if, in these instances, our total return per share is more than 500 basis points below the applicable index in any year, determined on a cumulative basis (i.e., between 200 basis points and 500 basis points per year multiplied by the number of years in the measurement period and below the applicable market index).
The incentive management fee is subject to a cap. The cap is equal to the value of the number of our common shares which would, after issuance, represent 1.5% of the number of our common shares then outstanding multiplied by the average closing price of our common shares during the 10 consecutive trading days having the highest average closing prices during the final 30 trading days of the relevant measurement period.
Incentive management fees we paid to RMR for any period may be subject to “clawback” if our financial statements for that period are restated due to material non-compliance with any financial reporting requirements under the securities laws as a result of the bad faith, fraud, willful misconduct or gross negligence of RMR and the amount of the incentive management fee we paid was greater than the amount we would have paid based on the restated financial statements.
Business management fees are included in general and administrative expenses in our consolidated statements of comprehensive income (loss). We did not incur any incentive management fee pursuant to our business management agreement for the years ended December 31, 2024 or 2023.
Property Management and Construction Supervision Fees. The property management fees payable to RMR by us for each applicable period are equal to 3.0% of gross collected rents and the construction supervision fees payable to RMR by us for each applicable period are equal to 5.0% of construction costs. Property management fees are included in other operating expenses in our consolidated statements of net income (loss) and construction supervision fees are capitalized as building improvements in our consolidated balance sheets and are depreciated over the estimated useful lives of the related capital assets.

Expense Reimbursement. We are generally responsible for all of our operating expenses, including certain expenses incurred or arranged by RMR on our behalf. We are generally not responsible for payment of RMR’s employment, office or administrative expenses incurred to provide management services to us, except for the employment and related expenses of RMR’s employees assigned to work exclusively or partly at our properties, our share of the wages, benefits and other related costs of RMR’s centralized accounting personnel, our share of RMR’s costs for providing our internal audit function and as otherwise agreed. Our property level operating expenses are generally incorporated into rents charged to our tenants, including certain payroll and related costs incurred by RMR which are included in other operating expenses and general and administrative expense, as applicable, in our consolidated statements of comprehensive income (loss).
Term. Our management agreements with RMR have terms that end on December 31, 2044, and automatically extend on December 31st of each year for an additional year, so that the terms of our management agreements thereafter end on the 20th anniversary of the date of the extension.
Termination Rights. We have the right to terminate one or both of our management agreements with RMR: (i) at any time on 60 days’ written notice for convenience, (ii) immediately on written notice for cause, as defined therein, (iii) on written notice given within 60 days after the end of an applicable calendar year for a performance reason, as defined therein, and (iv) by written notice during the 12 months following a change of control of RMR, as defined therein. RMR has the right to terminate the management agreements for good reason, as defined therein.
Termination Fee. If we terminate one or both of our management agreements with RMR for convenience, or if RMR terminates one or both of our management agreements for good reason, we have agreed to pay RMR a termination fee in an amount equal to the sum of the present values of the monthly future fees, as defined therein, for the terminated management agreement(s) for the term that was remaining prior to such termination, which, depending on the time of termination, would be between 19 and 20 years. If we terminate one or both of our management agreements with RMR for a performance reason, we have agreed to pay RMR the termination fee calculated as described above, but assuming a 10-year term was remaining prior to the termination. We are not required to pay any termination fee if we terminate our management agreements with RMR for cause or as a result of a change of control of RMR.
Transition Services. RMR has agreed to provide certain transition services to us for 120 days following an applicable termination by us or notice of termination by RMR, including cooperating with us and using commercially reasonable efforts to facilitate the orderly transfer of the management and real estate investment services provided under our business management agreement and to facilitate the orderly transfer of the management of the managed properties under our property management agreement, as applicable.
Vendors. Pursuant to our management agreements with RMR, RMR may from time to time negotiate on our behalf with certain third party vendors and suppliers for the procurement of goods and services to us. As part of this arrangement, we may enter agreements with RMR and other companies to which RMR or its subsidiaries provide management services for the purpose of obtaining more favorable terms from such vendors and suppliers.
Investment Opportunities. Under our business management agreement with RMR, we acknowledge that RMR may engage in other activities or businesses and act as the manager to any other person or entity (including other REITs) even though such person or entity has investment policies and objectives similar to ours and we are not entitled to preferential treatment in receiving information, recommendations and other services from RMR.
In January 2025, in connection with a $100,000 credit agreement and related security agreement entered into by RMR and certain of its subsidiaries with Citibank, N.A., or Citibank, and the other lenders party thereto, we consented to the pledge and assignment of RMR’s interest in our management agreements under the security agreement. Pursuant to the consent, we agreed, among other things, that upon notice that an event of default under the RMR credit agreement has occurred and is continuing, we will continue to make all payments under our management agreements in accordance with the instructions of Citibank, and that if there is an event of default by RMR under our management agreements that would allow us to terminate or suspend our obligations, we will not terminate or suspend without notice to Citibank and providing Citibank 30 days to cure the default on RMR’s behalf. The consent was approved by our Independent Trustees.

For the years ended December 31, 2024 and 2023, the business management fees, property management fees and construction supervision fees and expense reimbursements recognized in our consolidated financial statements were as follows:
Year Ended December 31,
20242023
Pursuant to business management agreement:
Business management fees (1)
$13,145 $14,751 
Pursuant to property management agreement:
Property management fees (2)
$13,584 $14,890 
Construction supervision fees2,872 8,390 
$16,456 $23,280 
Expense Reimbursement:
Property level expenses
$25,797 $25,872 
(1)The net business management fees we recognized for the years ended December 31, 2024 and 2023 each reflect a reduction of $603 for the amortization of the liability we recorded in connection with our former investment in RMR Inc.
(2)The net property management fees we recognized for the years ended December 31, 2024 and 2023 each reflect a reduction of $484 for the amortization of the liability we recorded in connection with our former investment in RMR Inc.

Management Agreements between our Joint Venture and RMR. RMR provides management services to our unconsolidated joint venture. We are not obligated to pay management fees to RMR under our management agreement with RMR for the services it provides regarding the joint venture. The joint venture pays management fees directly to RMR.
v3.25.0.1
Related Person Transactions
12 Months Ended
Dec. 31, 2024
Related Party Transactions [Abstract]  
Related Person Transactions Related Person Transactions
We have relationships and historical and continuing transactions with RMR, RMR Inc. and others related to them, including other companies to which RMR or its subsidiaries provide management services and some of which have trustees, directors or officers who are also our Trustees or officers. RMR is a majority owned subsidiary of RMR Inc. The Chair of our Board of Trustees and one of our Managing Trustees, Adam Portnoy, is the sole trustee, an officer and the controlling shareholder of ABP Trust, which is the controlling shareholder of RMR Inc., the chair of the board of directors, a managing director, the president and chief executive officer of RMR Inc. and an officer and employee of RMR. Jennifer Clark, our other Managing Trustee, is a managing director and the executive vice president, general counsel and secretary of RMR Inc., an officer and employee of RMR and an officer of ABP Trust. Each of our officers is also an officer and employee of RMR. Some of our Independent Trustees also serve as independent trustees of other public companies to which RMR or its subsidiaries provide management services. Mr. Portnoy serves as chair of the boards and as a managing trustee of these public companies. Other officers of RMR, including Ms. Clark, serve as managing trustees or officers of certain of these companies.
Our Manager, RMR. We have two agreements with RMR to provide management services to us. RMR also provides management services to our unconsolidated joint venture. See Note 6 for more information regarding our and our unconsolidated joint venture’s management agreements with RMR.
Leases with RMR. We lease office space to RMR in certain of our properties for RMR’s property management offices. Pursuant to our lease agreements with RMR, we recognized rental income from RMR for leased office space of $807 and $851 for the years ended December 31, 2024 and 2023, respectively. Our office space leases with RMR are terminable by RMR if our management agreements with RMR are terminated.
Share Awards to RMR Employees. As described further in Note 11, we award shares to our officers and other employees of RMR annually. Generally, one fifth of these awards vest on the grant date and one fifth vests on each of the next four anniversaries of the grant dates. In certain instances, we may accelerate the vesting of an award, such as in connection with the award holder’s retirement as an officer of us or an officer or employee of RMR. These awards to RMR employees are in addition to the share awards to our Managing Trustees, as Trustee compensation, and the fees we paid to RMR. See Note 11 for more information regarding our share awards and activity as well as certain share purchases we made in connection with share award recipients satisfying tax withholding obligations on the vesting of share awards.
Sonesta. Prior to January 1, 2025, we leased 240,000 rentable square feet of a mixed-use property in Washington, D.C. pursuant to a lease with a subsidiary of Sonesta, or the Sonesta Lease. We terminated the Sonesta Lease, effective January 1, 2025. The Sonesta Lease commenced in August 2023 and was amended in September 2024 to expand the premises by 5,900 rentable square feet. Pursuant to the amended Sonesta Lease, Sonesta was required to pay us annual base rent of approximately $6,724 beginning February 2025, and the annual base rent would have increased by 10% every five years throughout the term. Sonesta was also obligated to pay its pro rata share of the operating costs for the property. We recognized rental income of $12,428 in 2024 under the Sonesta Lease. As of December 31, 2024, we had paid approximately $76,834 of tenant improvement costs for the build out of the hotel space pursuant to the Sonesta Lease.
Effective January 1, 2025, we entered into a management agreement with Sonesta, or the Sonesta Management Agreement, to replace the Sonesta Lease. The Sonesta Management Agreement expires on December 31, 2040, and includes two 10-year renewal options. The Sonesta Management Agreement provides that we are paid an annual owner’s priority return if gross revenues of the hotels, after payment of hotel operating expenses and management and related fees (other than Sonesta’s incentive fee, if applicable), are sufficient to do so. The Sonesta Management Agreement further provides that we are paid an additional return of the operating profits, as defined therein, after paying the owner’s priority return, reimbursing owner or manager advances, funding furniture, fixtures and equipment, or FF&E, reserves and paying Sonesta’s incentive fee, if applicable. We do not have any security deposits or guarantees for this Sonesta hotel. The stated annual owner’s priority return is initially $7,500 and increases by 8.0% of our out-of-pocket capital expenditures and will increase annually to 102% of our prior year’s annual owner’s priority return. We are responsible for any capital expenditures in excess of available funds in the FF&E reserve. The Sonesta Management Agreement requires that 1.0% of gross revenues for 2025, 3.0% of gross revenues for 2026 and 4.0% of gross revenues for each calendar year thereafter be escrowed for future capital expenditures as FF&E reserves.
Pursuant to the Sonesta Management Agreement, we are required to pay Sonesta, after payment of hotel operating expenses, a base management fee equal to 1.5% of gross revenues, as defined in the Sonesta Management Agreement, for 2025 and 3.0% of gross revenues each calendar year thereafter. Additionally, we are required to pay (i) an incentive fee equal to 20% of net operating profit, as defined in the Sonesta Management Agreement, in excess of the annual owner’s priority; (ii) a brand promotion fee of 1.75% of gross revenues for 2025 and 3.5% of gross revenues for each calendar year thereafter; and (iii) a loyalty fee of the greater of 1.0% of room revenues or 4.5% of qualified room revenues from guests participating in certain loyalty programs. Sonesta’s incentive management fee, but not its other fees, is earned only after our annual owner’s priority return is paid. The Sonesta Management Agreement also provides that the pro rata costs Sonesta incurs for advertising, marketing, promotional and public relations programs and campaigns, including its Rewards Program, for the benefit of this hotel are subject to reimbursement by us or are otherwise treated as hotel operating expenses. We are required to maintain working capital under the Sonesta Management Agreement and have advanced a fixed amount based on the number of rooms in the hotel to meet the cash needs for hotel operations.

The Sonesta Management Agreement also provides that, prior to August 2, 2026, our approval is required for Sonesta to operate another Royal Sonesta Hotel in Washington D.C., other than the Royal Sonesta Washington Dupont Circle located at 2121 P Street, N.W., Washington D.C. In general, we and Sonesta may terminate the Sonesta Management Agreement for events of default and casualty and condemnation events. We also have the right to terminate the Sonesta Management Agreement if minimum performance thresholds are not met starting in 2027 for any two consecutive calendar years. Pursuant to the Sonesta Management Agreement, we or Sonesta may be obligated to pay the other party damages if the terminating party terminates the Sonesta Management Agreement due to the other party’s event of default.
Mr. Portnoy is a director and controlling shareholder of Sonesta, and Ms. Clark is a director of Sonesta. Another officer and employee of RMR is a director and president and chief executive officer of Sonesta.
v3.25.0.1
Concentration
12 Months Ended
Dec. 31, 2024
Risks and Uncertainties [Abstract]  
Concentration Concentration
Tenant and Credit Concentration
As of December 31, 2024 and 2023, the U.S. government and certain state and other government tenants combined were responsible for approximately 24.8% and 27.5%, respectively, of our annualized rental income. The U.S. government is our largest tenant by annualized rental income and represented approximately 17.0% and 19.5% of our annualized rental income as of December 31, 2024 and 2023, respectively. We define annualized rental income as the annualized contractual base rents from our tenants pursuant to our lease agreements as of the measurement date, plus straight line rent adjustments and estimated recurring expense reimbursements to be paid to us, and excluding lease value amortization.
Geographic Concentration
As of December 31, 2024, our 128 wholly owned properties were located in 29 states and the District of Columbia. Properties located in Virginia, California, District of Columbia, Texas and Illinois were responsible for approximately 13.2%, 11.0%, 11.0%, 10.4%, and 10.1% of our annualized rental income as of December 31, 2024, respectively.
v3.25.0.1
Indebtedness
12 Months Ended
Dec. 31, 2024
Debt Disclosure [Abstract]  
Indebtedness Indebtedness
As of December 31, 2024 and 2023, our outstanding indebtedness consisted of the following:
 December 31,
20242023
Unsecured revolving credit facility, due in 2024$— $205,000 
Secured revolving credit facility, due in 2027325,000 — 
Secured term loan, due in 2027100,000 — 
Senior unsecured notes, 4.250% interest rate, due in 2024 (1)
— 350,000 
Senior unsecured notes, 4.500% interest rate, due in 2025 (2)
171,586 650,000 
Senior unsecured notes, 2.650% interest rate, due in 2026
140,488 300,000 
Senior unsecured notes, 2.400% interest rate, due in 2027
80,784 350,000 
Senior secured notes, 3.250% interest rate, due in 2027 (3)
444,992 — 
Mortgage note payable, 8.272% interest rate, due in 2028
42,700 42,700 
Mortgage note payable, 8.139% interest rate, due in 2028
26,340 26,340 
Mortgage note payable, 7.671% interest rate, due in 2028
54,300 54,300 
Senior secured notes, 9.000% interest rate, due in March 2029 (4)
300,000 — 
Senior secured notes, 9.000% interest rate, due in September 2029 (5)
609,999 — 
Senior unsecured notes, 3.450% interest rate, due in 2031
114,355 400,000 
Mortgage note payable, 7.210% interest rate, due in 2033
30,680 30,680 
Mortgage note payable, 7.305% interest rate, due in 2033
8,400 8,400 
Mortgage note payable, 7.717% interest rate, due in 2033
14,900 14,900 
Senior unsecured notes, 6.375% interest rate, due in 2050
162,000 162,000 
2,626,524 2,594,320 
Unamortized debt premiums, discounts and issuance costs(91,890)(21,711)
$2,534,634 $2,572,609 
(1)These senior notes were redeemed in March 2024.
(2)Certain of these senior notes were redeemed through a series of exchange transactions during the year ended December 31, 2024. The remaining balance of $171,586 at December 31, 2024 was redeemed in cash in January 2025.
(3)These senior notes were issued in December 2024.
(4)These senior notes were issued in February 2024.
(5)These senior notes were issued in June and October 2024.
In January 2024, we entered into an amended and restated credit agreement, or our credit agreement, governing a new $325,000 secured revolving credit facility and a $100,000 secured term loan. Our credit agreement replaced our prior revolving credit facility, which had a maturity date of January 31, 2024. As collateral for all loans and other obligations under our credit agreement, certain of our subsidiaries pledged all of their respective equity interests in certain of our direct and indirect property owning subsidiaries, and our pledged subsidiaries provided first mortgage liens on 19 properties that had a gross book value of real estate assets of $1,030,889 as of December 31, 2024. We can borrow, repay and reborrow funds available under our revolving credit facility until maturity, and no principal repayments on borrowings under our credit agreement are due until maturity. The maturity date of our credit agreement is January 29, 2027 and, subject to the payment of an extension fee and meeting certain other requirements, we can extend the stated maturity date of our revolving credit facility by one year. Our credit agreement contains a number of covenants, including covenants that require us to maintain certain financial ratios, restrict our ability to incur additional debt in excess of calculated amounts and, subject to limited exceptions, restrict our ability to increase our distribution rate above the current level of $0.01 per common share per quarter and enter into share repurchases. Availability of borrowings under our credit agreement is subject to ongoing minimum performance and market values of the 19 collateral properties, our satisfying certain financial covenants and other credit facility conditions.
Interest payable on borrowings under our credit agreement is at a rate of the secured overnight financing rate, or SOFR, plus a margin of 350 basis points. We are also required to pay an unused facility fee on the amount of total lending commitments, which was 25 basis points per annum at December 31, 2024. As of December 31, 2024, we were fully drawn on our $325,000 revolving credit facility and $100,000 was outstanding under our term loan.
As of December 31, 2024, the annual interest rate payable on borrowings under our credit agreement was 7.9%. The weighted average annual interest rate for borrowings under our credit agreement for the year ended December 31, 2024 was 8.7%.
Under our prior revolving credit facility, we were required to pay interest at a rate of SOFR plus a premium, which was 145 basis points per annum at December 31, 2023, on the amount outstanding under our prior revolving credit facility, as well as a facility fee on the total amount of lending commitments, which was 30 basis points per annum at December 31, 2023. As of December 31, 2023, the annual interest rate payable on borrowings under our prior revolving credit facility was 6.9%. The weighted average annual interest rate for borrowings under our prior revolving credit facility for the year ended December 31, 2023 was 6.5%.
Our revolving credit facility is governed by a credit agreement with a syndicate of institutional lenders. Our credit agreement and senior notes indentures and their supplements provide for acceleration of payment of all amounts due thereunder upon the occurrence and continuation of certain events of default, such as, in the case of our credit agreement, a change of control of us, which includes RMR, ceasing to act as our business and property manager. Our credit agreement and senior notes indentures and their supplements also contain covenants, including covenants that restrict our ability to incur debts, require us to comply with certain financial covenants and, in the case of our credit agreement, restrict our ability to increase our distribution rate above the current level of $0.01 per common share per quarter. We believe we were in compliance with the terms and conditions of the respective covenants under our credit agreement and senior notes indentures and their supplements at December 31, 2024.
Senior Secured Notes Issuance
In February 2024, we issued $300,000 in aggregate principal amount of 9.000% senior secured notes due March 2029, or the March 2029 Notes. The aggregate net proceeds from the offering of the March 2029 Notes were $270,712, after initial purchaser discounts and other offering expenses. The March 2029 Notes are fully and unconditionally guaranteed on a joint, several and senior secured basis by certain of our subsidiaries and secured by a pledge of all of the respective equity interests of the subsidiary guarantors and first mortgage liens on 17 properties with a gross book value of real estate assets of $621,506 as of December 31, 2024. The March 2029 Notes require semi-annual payments of interest only and are prepayable, at par plus accrued interest, after March 31, 2028.
Senior Unsecured Notes Redemption
In March 2024, we redeemed, at par plus accrued interest, all $350,000 of our 4.25% senior unsecured notes due 2024. As a result of this redemption, we recorded a loss on early extinguishment of debt of $425 during the year ended December 31, 2024, which represented the unamortized discounts related to these notes.
Senior Notes Exchanges
In June and October 2024, through two exchange transactions, we exchanged $609,999 in aggregate principal amount of new 9.000% senior secured notes due September 2029, or the September 2029 Notes, for an aggregate $895,373 of certain of our outstanding senior unsecured notes, or the Existing Notes, and an aggregate 1,406,952 of our common shares valued at $2.26 per share, and such transactions, the 2029 Senior Note Exchanges, as follows:
Existing Notes ExchangedAggregate Principal Amount of Existing Notes Accepted for Exchange
Aggregate Principal Amount of September 2029 Notes Delivered
Existing 4.50% 2025 Notes
$181,000 $183,981 
Existing 2.650% 2026 Notes
159,512 114,803 
Existing 2.400% 2027 Notes
269,216 164,162 
Existing 3.450% 2031 Notes
285,645 147,053 
Total$895,373 $609,999 
The September 2029 Notes are fully and unconditionally guaranteed on a joint, several and senior secured basis by certain of our subsidiaries and are secured by first mortgage liens on 19 properties with a gross book value of real estate assets of $721,375 as of December 31, 2024 and second mortgage liens on the 19 properties securing our credit agreement. The September 2029 Notes require semi-annual payments of interest only and are prepayable, at par plus accrued interest, after June 3, 2028. During the year ended December 31, 2024, we recorded a net gain on early extinguishment of debt of $212,735 as a result of the 2029 Senior Note Exchanges.
In December 2024, through an exchange transaction, we exchanged $444,992 of new 3.250% senior secured notes due March 2027, or the March 2027 Notes, 11,532,794 of our common shares valued at $1.37 per share and cash premiums of $25,000 for $281,514 of 4.500% senior unsecured notes due 2025, or the 2025 Notes, and $58,486 in cash from certain existing noteholders. This transaction is referred to herein as the 2027 Senior Note Exchange. The March 2027 Notes require quarterly payments of interest and quarterly principal amortization payments of $6,500, and on or before March 1, 2026, require a mandatory principal payment of $125,000, which is subject to reduction for certain prior redemptions of the March 2027 Notes. The March 2027 Notes are fully and unconditionally guaranteed on a joint, several and senior secured basis by certain of our subsidiaries and are secured by first mortgage liens on 37 properties with a gross book value of real estate assets of $1,279,487 as of December 31, 2024 and second mortgage liens on the 19 properties securing the September 2029 Notes and they are fully and unconditionally guaranteed, on a joint, secured and senior unsecured basis by certain of our other subsidiaries. During the year ended December 31, 2024, we recorded a loss on early extinguishment of debt of $87,064 as a result of the 2027 Senior Note Exchange. We redeemed, at par plus accrued interest, the remaining $171,586 of the 2025 Notes in January 2025.
During the year ended December 31, 2024, in a series of exchange transactions, we exchanged $15,900 in aggregate principal amount of the 2025 Notes for an aggregate amount of 7,565,722 of our common shares at a weighted average price of $2.07 per share. During the year ended December 31, 2024, we recorded a gain on early extinguishment of debt of $939 as a result of these exchanges.
The gains we realized on early extinguishment of debt are considered cancellation of debt income, or CODI, for income tax purposes and part of our REIT taxable income. We do not expect that any special distribution will be required to maintain our qualification for taxation as a REIT as a result of generating CODI in 2024 as a result of offsetting losses from the sale of real estate and other tax strategies.
On February 7, 2025, we commenced a series of exchange offers, or the Exchange Offers, pursuant to which we are offering to issue up to $175,000 in aggregate principal amount of new 8.000% senior guaranteed unsecured notes due 2030, or the New 2030 Notes, and related guarantees in exchange for our outstanding (i) 2.650% senior unsecured notes due 2026, (ii) 2.400% senior unsecured notes due 2027 and (iii) 3.450% senior unsecured notes due 2031. The Exchange Offers are being made subject to the terms and conditions set forth in an offering memorandum dated as of February 7, 2025.
As of December 31, 2024, seven of our properties with an aggregate gross book value of real estate assets of $304,673 were encumbered by mortgage notes with an aggregate principal amount of $177,320. Our mortgage notes are non-recourse, subject to certain limited exceptions and do not contain any material financial covenants.
The required principal payments due during the next five years and thereafter under all our outstanding consolidated debt as of December 31, 2024 were as follows:
YearPrincipal Payment
2025 (1)
$197,586 
2026291,488 
2027773,776 
2028123,487 
2029910,278 
Thereafter329,909 
Total (2)
$2,626,524 
(1)Includes $171,586 aggregate principal of the 2025 Notes, which were redeemed in full in January 2025.
(2)Total consolidated debt outstanding as of December 31, 2024, net of unamortized premiums, discounts and issuance costs totaling $91,890, was $2,534,634.
None of our unsecured debt obligations require principal or sinking fund payments prior to their maturity dates.
v3.25.0.1
Fair Value of Assets and Liabilities
12 Months Ended
Dec. 31, 2024
Fair Value Disclosures [Abstract]  
Fair Value of Assets and Liabilities Fair Value of Assets and Liabilities
The following table presents certain of our assets measured at fair value at December 31, 2024, categorized by level of inputs as defined in the fair value hierarchy under GAAP, used in the valuation of each asset:
Fair Value at Reporting Date Using
DescriptionTotalQuoted Prices in Active Markets for Identical Assets (Level 1)Significant Other Observable Inputs (Level 2)Significant Unobservable Inputs (Level 3)
Non-recurring Fair Value Measurements Assets
Assets of properties held for sale (1)
$25,909 $— $25,909 $— 
(1)We recorded an impairment charge of $19,042 to reduce the carrying values of three properties that are classified as held for sale in our condensed consolidated balance sheet to their estimated fair values less estimated costs to sell of $739, based on negotiated sales prices with third party buyers (Level 2 inputs as defined in the fair value hierarchy under GAAP). See Note 4 for more information.
In addition to the assets described above, our financial instruments include our cash and cash equivalents, restricted cash, rents receivable, accounts payable, a revolving credit facility, a term loan, senior notes, mortgage notes payable, amounts due to related persons, other accrued expenses and security deposits. At December 31, 2024 and 2023, the fair values of our financial instruments approximated their carrying values in our consolidated financial statements, due to their short term nature or floating interest rates, except as follows:
 As of December 31, 2024As of December 31, 2023
Financial Instrument
Carrying Value(1)
Fair Value
Carrying Value(1)
Fair Value
Senior unsecured notes, 4.25% interest rate, due in 2024
$— $— $349,144 $331,510 
Senior unsecured notes, 4.50% interest rate, due in 2025
171,607 169,302 646,266 510,445 
Senior unsecured notes, 2.650% interest rate, due in 2026
139,578 106,078 298,464 185,934 
Senior unsecured notes, 2.400% interest rate, due in 2027
80,486 49,475 348,086 196,147 
Senior secured notes, 3.250% interest rate, due in 2027
363,432 383,806 — — 
Senior secured notes, 9.000% interest rate, due in March 2029
275,632 293,100 — — 
Senior secured notes, 9.000% interest rate, due in September 2029
637,052 529,436 — — 
Senior unsecured notes, 3.450% interest rate, due in 2031
113,511 49,688 396,614 199,060 
Senior unsecured notes, 6.375% interest rate, due in 2050
157,096 80,676 156,904 83,916 
Mortgage notes payable172,912 177,295 172,131 179,813 
Total $2,111,306 $1,838,856 $2,367,609 $1,686,825 
(1)Includes unamortized debt premiums, discounts and issuance costs totaling $90,218 and $21,711 as of December 31, 2024 and 2023, respectively.

We estimated the fair values of our senior notes (except for our senior unsecured notes due 2050) using an average of the bid and ask price of the notes (Level 2 inputs as defined in the fair value hierarchy under GAAP) as of the measurement date. We estimated the fair values of our senior unsecured notes due 2050 based on the closing price on Nasdaq (Level 1 inputs as defined in the fair value hierarchy under GAAP) as of the measurement date. We estimated the fair values of our mortgage notes payable using discounted cash flow analyses and currently prevailing market rates (Level 3 inputs as defined in the fair value hierarchy under GAAP) as of the measurement date. Because Level 3 inputs are unobservable, our estimated fair values may differ materially from the actual fair values.
v3.25.0.1
Shareholders' Equity
12 Months Ended
Dec. 31, 2024
Equity [Abstract]  
Shareholders' Equity Shareholders’ Equity
Share Awards
We have common shares available for issuance under the terms of our Amended and Restated 2009 Incentive Share Award Plan, or the 2009 Plan. During the years ended December 31, 2024 and 2023, we awarded to our officers and other employees of RMR annual share awards of 544,555 and 210,300 of our common shares, respectively, valued at $1,160 and $1,211, in
aggregate, respectively. During the years ended December 31, 2024 and 2023, we awarded each of our nine Trustees, in accordance with our Trustee compensation arrangements, 11,627 and 3,500 of our common shares, respectively. These awards had aggregate values of $225 ($25 per Trustee) and $249 ($28 per Trustee) in 2024 and 2023, respectively. The values of the share awards were based upon the closing price of our common shares on Nasdaq on the date of award. The common shares awarded to our officers and certain other employees of RMR vest in five equal annual installments beginning on the date of award. The common shares awarded to our Trustees vest immediately. We recognize share forfeitures as they occur and include the value of awarded shares in general and administrative expenses ratably over the vesting period.
A summary of shares awarded, forfeited, vested and unvested under the terms of the 2009 Plan for the years ended December 31, 2024 and 2023, is as follows:
20242023
Number of SharesWeighted Average Grant Date Fair ValueNumber of SharesWeighted Average Grant Date Fair Value
Unvested at beginning of year288,681 $12.01 231,301 $21.47 
Awarded649,198 $2.14 241,800 $6.04 
Forfeited — $— (3,700)$17.31 
Vested(346,000)$6.62 (180,720)$16.00 
Unvested at end of year591,879 $4.32 288,681 $12.01 
The 591,879 unvested shares as of December 31, 2024 are scheduled to vest as follows: 176,976 shares in 2025, 162,596 shares in 2026, 143,675 shares in 2027 and 108,632 shares in 2028. As of December 31, 2024, the estimated future compensation expense for the unvested shares was $2,222. The weighted average period over which the compensation expense will be recorded is approximately 23 months. During the years ended December 31, 2024 and 2023, we recorded $1,662 and $2,257, respectively, of compensation expense related to the 2009 Plan. At December 31, 2024, 94,000 of our common shares remained available for issuance under the 2009 Plan.
Share Purchases
During the years ended December 31, 2024 and 2023, we purchased 85,338 and 48,329 of our common shares, respectively, valued at weighted average share prices of $2.25 and $6.08 per common share, respectively, from certain of our current and former Trustees and officers and certain current and former officers and employees of RMR in satisfaction of tax withholding and payment obligations in connection with the vesting of prior awards of our common shares.
Distributions
During the years ended December 31, 2024 and 2023, we paid distributions on our common shares as follows:
Annual Per Share DistributionTotal DistributionsCharacterization of Distributions
Year Return of CapitalOrdinary IncomeQualified Dividend
2024$0.04 $2,033 100.00%—%—%
2023$1.30 $63,187 100.00%—%—%
On January 16, 2025, we declared a quarterly cash distribution payable to common shareholders of record on January 27, 2025 in the amount of $0.01 per share, or approximately $698. We expect to pay this distribution on or about February 20, 2025.
v3.25.0.1
Segment Reporting
12 Months Ended
Dec. 31, 2024
Segment Reporting [Abstract]  
Segment Reporting Segment Reporting
We manage our business on a consolidated basis and therefore have one reportable segment: ownership and leasing of properties. The chief operating decision maker, or CODM, is our President and Chief Operating Officer. The CODM assesses performance, allocates resources and makes strategic decisions based on net income (loss) as shown in our consolidated statements of comprehensive income (loss). The CODM is also regularly provided with information on expenses related to our management agreements with RMR, which are detailed in Note 9. The accounting policies of our reportable segment are the same as those described in Note 2. The measure of segment assets is reported as total assets in our consolidated balance sheets.
v3.25.0.1
SCHEDULE III REAL ESTATE AND ACCUMULATED DEPRECIATION
12 Months Ended
Dec. 31, 2024
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract]  
SCHEDULE III REAL ESTATE AND ACCUMULATED DEPRECIATION
   Initial Cost to CompanyCosts Capitalized Subsequent to AcquisitionCost amount carried at Close of Period
PropertyLocationNumber of Properties
Encumbrances (1)
LandBuildings
and
Equipment
Impairments/
Writedowns
LandBuildings
and
Equipment
Total (2)
Accumulated
Depreciation
(3)
Date(s)
Acquired
Original
Construction
Date(s)
445 Jan Davis Drive (8)
 Huntsville, AL 1$— $1,501 $1,492 $— $— $1,501 $1,492 $2,993 $(239)12/31/20182007
131 Clayton Street Montgomery, AL 1— 920 9,084 528 — 920 9,612 10,532 (3,228)6/22/20112007
4344 Carmichael Road Montgomery, AL 1— 1,374 11,658 572 — 1,374 12,230 13,604 (3,453)12/17/20132009
15451 North 28th Avenue (6)
 Phoenix, AZ 1— 1,917 7,416 1,279 — 1,917 8,695 10,612 (2,310)9/10/20141996
711 S 14th Avenue Safford, AZ 1— 460 11,708 1,165 (4,440)364 8,529 8,893 (2,036)6/16/20101992
2544 Campbell Place (7)
 Carlsbad, CA 1— 2,687 1,796 1,585 — 2,687 3,381 6,068 (939)12/31/20182007
2548 Campbell Place (6)
 Carlsbad, CA 1— 3,082 2,075 5,156 — 3,082 7,231 10,313 (2,461)12/31/20182007
Folsom Corporate Center (5)
 Folsom, CA 1— 2,904 5,583 1,587 — 2,904 7,170 10,074 (1,684)12/31/20182008
Bayside Technology Park (7)
 Fremont, CA 1— 10,784 648 269 — 10,784 917 11,701 (201)12/31/20181990
10949 N. Mather Boulevard Rancho Cordova, CA 1— 562 16,923 1,056 — 562 17,979 18,541 (5,186)10/30/20132012
11020 Sun Center Drive Rancho Cordova, CA 1— 1,466 8,797 1,996 — 1,466 10,793 12,259 (2,359)12/20/20161983
100 Redwood Shores Parkway Redwood City, CA 1— 14,454 7,721 — — 14,454 7,721 22,175 (1,285)12/31/20181993
9815 Goethe Road (6)
 Sacramento, CA 1— 1,450 9,465 3,537 — 1,450 13,002 14,452 (3,718)9/14/20111992
Capitol Place (6)
 Sacramento, CA 1— 2,290 35,891 9,997 — 2,290 45,888 48,178 (17,395)12/17/20091988
4560 Viewridge Road (5)
 San Diego, CA 1— 4,269 18,316 5,392 — 4,347 23,630 27,977 (15,662)3/31/19971996
2115 O’Nel Drive (7)
 San Jose, CA 1— 12,305 5,062 385 — 12,305 5,447 17,752 (945)12/31/20181984
51 Rio Robles Drive San Jose, CA 1— 7,416 4,782 571 — 7,416 5,353 12,769 (1,049)12/31/20181984
77 Rio Robles Drive (6)
 San Jose, CA 1— 8,362 5,393 9,932 — 8,362 15,325 23,687 (3,261)12/31/20181984
145 Rio Robles Drive
 San Jose, CA 18,078 7,909 3,523 6,608 — 7,909 10,131 18,040 (1,686)12/31/20181984
2500 Walsh Avenue (6)
 Santa Clara, CA 1— 6,687 8,326 2,922 — 6,687 11,248 17,935 (1,426)12/31/20181982
603 San Juan Avenue Stockton, CA 1— 563 5,470 217 — 563 5,687 6,250 (1,771)7/20/20122012
350 West Java Drive (6)
 Sunnyvale, CA 1— 24,609 462 3,296 — 24,609 3,758 28,367 (334)12/31/20181984
7958 South Chester Street Centennial, CO 1— 6,682 7,153 2,881 — 6,682 10,034 16,716 (1,643)12/31/20182000
12795 West Alameda Parkway Lakewood, CO 1— 2,640 23,777 (7,662)(14,590)585 3,580 4,165 (38)1/15/20101988
11 Dupont Circle, NW (7)
 Washington, DC 1— 28,255 44,743 24,474 — 28,255 69,217 97,472 (15,454)10/2/20171974
1211 Connecticut Avenue, NW Washington, DC 1— 30,388 24,667 4,407 — 30,388 29,074 59,462 (6,704)10/2/20171967
1401 K Street, NW (7)
 Washington, DC 1— 29,215 34,656 8,480 — 29,215 43,136 72,351 (11,067)10/2/20171929
20 Massachusetts Avenue (7)
 Washington, DC 1— 12,009 51,527 223,321 — 12,231 274,626 286,857 (60,247)3/31/19971996
440 First Street, NW (5)
 Washington, DC 1— 27,903 38,624 3,403 — 27,903 42,027 69,930 (7,549)10/2/20171982
625 Indiana Avenue (7)
 Washington, DC 1— 26,000 25,955 12,825 — 26,000 38,780 64,780 (14,278)8/17/20101989
   Initial Cost to CompanyCosts Capitalized Subsequent to AcquisitionCost amount carried at Close of Period
PropertyLocationNumber of Properties
Encumbrances (1)
LandBuildings
and
Equipment
Impairments/
Writedowns
LandBuildings
and
Equipment
Total (2)
Accumulated
Depreciation
(3)
Date(s)
Acquired
Original
Construction
Date(s)
840 First Street, NE Washington, DC 1— 42,727 73,278 2,913 — 42,727 76,191 118,918 (14,541)10/2/20172003
10350 NW 112th Avenue (8)
 Miami, FL 1— 4,798 2,757 2,413 — 4,798 5,170 9,968 (1,016)12/31/20182002
7850 Southwest 6th Court (6)
 Plantation, FL 1— 4,800 30,592 16,817 — 4,800 47,409 52,209 (11,433)5/12/20111999
8900 Grand Oak Circle (7)
 Tampa, FL 1— 1,100 11,773 1,788 — 1,100 13,561 14,661 (4,649)10/15/20101994
180 Ted Turner Drive SW (5)
 Atlanta, GA 1— 5,717 20,017 3,061 — 5,717 23,078 28,795 (6,623)7/25/20122007
1224 Hammond Drive (6)
 Atlanta, GA 1— 13,040 135,459 11,678 — 13,040 147,137 160,177 (15,612)6/25/20212020
One Georgia Center (5)
 Atlanta, GA 1— 10,250 27,933 22,005 — 10,250 49,938 60,188 (15,962)9/30/20111968
One Primerica Parkway (4)
 Duluth, GA 126,156 6,927 22,951 2,268 — 6,927 25,219 32,146 (3,817)12/31/20182013
4712 Southpark Boulevard (8)
 Ellenwood, GA 1— 1,390 19,635 1,327 — 1,390 20,962 22,352 (6,311)7/25/20122005
8305 NW 62nd Avenue Johnston, IA 1— 2,649 7,997 — — 2,649 7,997 10,646 (1,330)12/31/20182011
1185, 1249 & 1387 S. Vinnell Way (6)
 Boise, ID 3— 3,390 29,026 1,520 — 3,390 30,546 33,936 (9,503)9/11/20121996; 1997; 2002
2020 S. Arlington Heights (5)
 Arlington Heights, IL 1— 1,450 13,588 2,156 — 1,450 15,744 17,194 (5,633)12/29/20091988
1000 W. Fulton (5)
 Chicago, IL 1— 42,935 252,914 1,035 — 42,935 253,949 296,884 (29,784)6/24/20212015
HUB 1415 (8)
 Naperville, IL 1— 12,333 20,586 26,551 — 12,333 47,137 59,470 (10,286)12/31/20182001
7601 and 7635 Interactive Way Indianapolis, IN 2— 3,337 14,522 34 — 3,337 14,556 17,893 (2,281)12/31/20182003
251 Causeway Street (7)
 Boston, MA 3— 26,851 36,756 6,426 — 26,848 43,185 70,033 (10,631)8/17/20101987
330 Billerica Road (8)
 Chelmsford, MA 1— 2,477 — 10,246 — 2,477 10,246 12,723 (2,743)12/31/20181984
25 Newport Avenue (7)
 Quincy, MA 1— 2,700 9,199 2,963 — 2,700 12,162 14,862 (4,054)2/16/20111985
2009-2011 Commerce Park Drive (7)
 Annapolis, MD 1— 1,580 3,825 4,097 1,581 7,921 9,502 (1,689)10/2/20171989
2001-2003 Commerce Park Drive Annapolis, MD 1— 2,477 3,840 1,204 — 2,476 5,045 7,521 (1,138)10/2/20171989
4201 Patterson Avenue (7)
 Baltimore, MD 1— 901 8,097 4,746 (85)893 12,766 13,659 (7,833)10/15/19981989
7001 Columbia Gateway Drive (7)
 Columbia, MD 1— 5,642 10,352 4,209 — 5,642 14,561 20,203 (2,254)12/31/20182008
6310 Hillside Center Columbia, MD 1— 1,424 2,084 440 — 1,424 2,524 3,948 (631)10/2/20172001
6315 Hillside Center (7)
 Columbia, MD 1— 2,013 2,144 575 — 2,013 2,719 4,732 (712)10/2/20172001
TenThreeTwenty (7)
 Columbia, MD 1— 3,126 16,361 4,798 — 3,126 21,159 24,285 (4,279)10/2/20171982
3300 75th Avenue Landover, MD 129,634 4,110 36,371 3,746 — 4,110 40,117 44,227 (14,846)2/26/20101985
Redland 520/530 (7)
 Rockville, MD 3— 12,714 61,377 8,166 — 12,714 69,543 82,257 (12,618)10/2/20172008
Redland 540 (7)
 Rockville, MD 1— 10,740 17,714 4,605 — 10,740 22,319 33,059 (5,698)10/2/20172003
   Initial Cost to CompanyCosts Capitalized Subsequent to AcquisitionCost amount carried at Close of Period
PropertyLocationNumber of Properties
Encumbrances (1)
LandBuildings
and
Equipment
Impairments/
Writedowns
LandBuildings
and
Equipment
Total (2)
Accumulated
Depreciation
(3)
Date(s)
Acquired
Original
Construction
Date(s)
3550 Green Court Ann Arbor, MI 1— 3,630 4,857 — — 3,630 4,857 8,487 (857)12/31/20181998
Rosedale Corporate Plaza (8)
 Roseville, MN 1— 672 6,045 2,896 — 672 8,941 9,613 (4,107)12/1/19991987
2555 Grand Boulevard (5)
 Kansas City, MO 1— 4,209 51,522 5,642 — 4,209 57,164 61,373 (10,135)12/31/20182003
4241 NE 34th Street (7)
 Kansas City, MO 1— 1,133 5,649 5,284 — 1,470 10,596 12,066 (5,834)3/31/19971995
1220 Echelon Parkway Jackson, MS 114,528 440 25,458 2,239 — 440 27,697 28,137 (8,217)7/25/20122009
2300 and 2400 Yorkmont Road (5)
 Charlotte, NC 2— 1,334 19,075 4,444 — 1,334 23,519 24,853 (4,475)12/31/20181995
18010 Burt Street (8)
 Omaha, NE 1— 2,819 6,250 4,710 — 2,819 10,960 13,779 (982)12/31/20182012
18020 Burt Street Omaha, NE 1— 4,158 6,250 13 — 4,158 6,263 10,421 (1,039)12/31/20182012
500 Charles Ewing Boulevard Ewing, NJ 142,354 4,808 26,002 1,846 — 4,808 27,848 32,656 (4,620)12/31/20182012
299 Jefferson Road (7)
 Parsippany, NJ 1— 4,543 2,914 1,649 — 4,543 4,563 9,106 (893)12/31/20182011
One Jefferson Road (7)
 Parsippany, NJ 1— 4,415 5,249 103 — 4,415 5,352 9,767 (898)12/31/20182009
Airline Corporate Center (7)
 Colonie, NY 1— 790 6,400 1,968 — 790 8,368 9,158 (2,612)6/22/20122004
1212 Pittsford - Victor Road (7)
 Pittsford, NY 1— 608 78 1,706 — 608 1,784 2,392 (355)12/31/20181965
2231 Schrock Road (8)
 Columbus, OH 1— 716 217 578 — 716 795 1,511 (229)12/31/20181999
8800 Tinicum Boulevard (7)
 Philadelphia, PA 1— 5,573 22,686 6,883 — 5,573 29,569 35,142 (4,577)12/31/20182000
446 Wrenplace Road (7)
 Fort Mill, SC 1— 5,031 22,524 42 — 5,031 22,566 27,597 (2,270)12/22/20202019
9680 Old Bailes Road Fort Mill, SC 1— 834 2,944 91 — 834 3,035 3,869 (519)12/31/20182007
16001 North Dallas Parkway (8)
 Addison, TX 2— 10,282 63,071 2,910 — 10,282 65,981 76,263 (11,484)12/31/20181987
Research Park (6)
 Austin, TX 2— 4,258 13,747 2,298 — 4,258 16,045 20,303 (4,155)12/31/20181999
10451 Clay Road (8)
 Houston, TX 1— 5,495 10,253 2,432 — 5,495 12,685 18,180 (2,486)12/31/20182013
202 North Castlegory Road (8)
 Houston, TX 1— 863 5,024 98 — 863 5,122 5,985 (796)12/31/20182016
4221 W. John Carpenter Freeway (8)
 Irving, TX 1— 1,413 2,365 1,843 — 1,413 4,208 5,621 (1,799)12/31/20181995
8675,8701-8711 Freeport Pkwy and 8901 Esters Boulevard (7)
 Irving, TX 3— 12,970 31,566 757 — 12,970 32,323 45,293 (5,250)12/31/20181990
1511 East Common Street (7)
 New Braunfels, TX 1— 4,965 1,266 251 — 4,965 1,517 6,482 (424)12/31/20182005
2900 West Plano Parkway Plano, TX 1— 6,819 8,831 — — 6,819 8,831 15,650 (1,469)12/31/20181998
3400 West Plano Parkway (8)
 Plano, TX 1— 4,543 15,964 321 — 4,543 16,285 20,828 (2,745)12/31/20181994
3600 Wiseman Boulevard (6)
 San Antonio, TX 1— 3,493 6,662 2,389 — 3,493 9,051 12,544 (1,487)12/31/20182004
701 Clay Road (4)
 Waco, TX 126,156 2,030 8,708 15,052 — 2,060 23,730 25,790 (11,137)12/23/19971997
   Initial Cost to CompanyCosts Capitalized Subsequent to AcquisitionCost amount carried at Close of Period
PropertyLocationNumber of Properties
Encumbrances (1)
LandBuildings
and
Equipment
Impairments/
Writedowns
LandBuildings
and
Equipment
Total (2)
Accumulated
Depreciation
(3)
Date(s)
Acquired
Original
Construction
Date(s)
1800 Novell Place (6)
 Provo, UT 1— 7,487 43,487 19,841 — 7,487 63,328 70,815 (9,528)12/31/20182000
14660 Lee Road (8)
 Chantilly, VA 1— 2,536 14,686 3,260 — 2,536 17,946 20,482 (3,295)12/22/20161998
14672 Lee Road (5)
 Chantilly, VA 1— 2,253 24,749 4,800 — 2,253 29,549 31,802 (7,435)12/22/20162002
14668 Lee Road (5)
 Chantilly, VA 1— 2,177 34,779 18,526 — 2,177 53,305 55,482 (7,933)12/22/20162006
Enterchange at Meadowville (6)
 Chester, VA 1— 1,478 9,594 1,369 — 1,478 10,963 12,441 (3,072)8/28/20131999
7987 Ashton Avenue (7)
 Manassas, VA 1— 1,562 8,253 1,093 — 1,562 9,346 10,908 (2,265)1/3/20171989
Two Commercial Place (8)
 Norfolk, VA 1— 4,494 21,508 1,096 — 4,494 22,604 27,098 (3,628)12/31/20181974
1760 Business Center Drive Reston, VA 1— 5,033 50,141 6,325 — 5,033 56,466 61,499 (15,184)5/28/20141987
1775 Wiehle Avenue Reston, VA 1— 4,138 26,120 5,934 — 4,138 32,054 36,192 (6,747)10/2/20172001
9201 Forest Hill Avenue Richmond, VA 1— 1,344 375 668 — 1,344 1,043 2,387 (322)12/31/20181985
9960 Mayland Drive (7)
 Richmond, VA 1— 2,614 15,930 5,021 — 2,614 20,951 23,565 (5,943)5/20/20141994
1751 Blue Hills Drive (5)
 Roanoke, VA 1— 2,689 7,761 — — 2,689 7,761 10,450 (1,291)12/31/20182003
Atlantic Corporate Park (7)
 Sterling, VA 2— 5,752 29,316 4,423 — 5,752 33,739 39,491 (6,660)10/2/20172008
Orbital Sciences Campus (5)
 Sterling, VA 3— 12,275 19,320 37,466 — 12,269 56,792 69,061 (4,480)12/31/20182001
Sterling Park Business Center Sterling, VA 126,007 5,871 44,324 135 — 5,871 44,459 50,330 (8,072)10/2/20172016
65 Bowdoin Street (6)
 S. Burlington, VT 1— 700 8,416 239 — 700 8,655 9,355 (3,179)4/9/20102009
Stevens Center (5)
 Richland, WA 2— 3,970 17,035 4,807 — 4,042 21,770 25,812 (13,792)3/31/19971995
Unison Elliott Bay-Lab Space (8)
 Seattle, WA 2— 17,316 34,281 147,272 — 17,316 181,553 198,869 (12,064)12/31/20182000
Unison Elliott Bay-Office Space (8)
 Seattle, WA 1— 9,324 18,459 4,858 — 9,324 23,317 32,641 (3,753)12/31/20182000
5353 Yellowstone Road (5)
 Cheyenne, WY 1— 1,915 8,217 4,528 — 1,950 12,710 14,660 (6,641)3/31/19971995
123$172,913 $712,433 $2,142,169 $822,072 $(19,115)$711,039 $2,946,520 $3,657,559 $(618,650)
Properties Held for Sale
3250 and 3260 Jay Street Santa Clara, CA 2— 19,899 14,051 83 (11,041)12,986 10,006 22,992 (2,244)12/31/20181982
11411 E. Jefferson Avenue (7)
 Detroit, MI 1— 630 18,002 596 (8,001)224 11,003 11,227 (6,807)4/23/20102009
Regents Center Tempe, AZ 2— 4,121 3,042 353 — 4,121 3,395 7,516 (979)12/31/20181988
5— 24,650 35,095 1,032 (19,042)17,331 24,404 41,735 (10,030)
128$172,913 $737,083 $2,177,264 $823,104 $(38,157)$728,370 $2,970,924 $3,699,294 $(628,680)
(1) Represents mortgage debt, net of the unamortized balance of debt issuance costs totaling $4,407.
(2) Excludes the value of real estate intangibles. Aggregate cost for federal income tax purposes is approximately $7,540,917.
(3) Depreciation on building and improvements is provided for periods ranging up to 40 years and on equipment up to seven years.
(4) These two properties are collateral for our $54,300 mortgage note.
(5) These 19 properties are first lien collateral for our $425,000 credit agreement and second lien collateral for our $610,000 of 9.000% senior secured notes due September 2029, or the September 2029 Notes.
(6) These 17 properties are collateral for our $300,000 of 9.000% senior secured notes due March 2029.
(7) These 37 properties are collateral for our $445,000 of 3.250% senior secured notes due March 2027, or the March 2027 Notes.
(8) These 19 properties are first lien collateral for the September 2029 Notes and second lien collateral for the March 2027 Notes.
An analysis of the carrying amount of real estate properties and accumulated depreciation is as follows:
 Real Estate PropertiesAccumulated Depreciation
Balance at December 31, 2022$3,936,074 $561,458 
Additions221,246 107,460 
Loss on asset impairment(11,299)— 
Disposals(51,011)(15,709)
Reclassification of assets of properties held for sale(29,331)(3,030)
Balance at December 31, 20234,065,679 650,179 
Additions107,912 118,710 
Loss on asset impairment(181,578)— 
Disposals(283,534)(131,024)
Cost basis adjustment (1)
(9,185)(9,185)
Reclassification of assets of properties held for sale(41,735)(10,030)
Balance at December 31, 2024$3,657,559 $618,650 
(1)    Represents the reclassification between accumulated depreciation and building made to certain properties measured at fair value in accordance with GAAP.
v3.25.0.1
Pay vs Performance Disclosure - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Pay vs Performance Disclosure    
Net loss $ (136,107) $ (69,432)
v3.25.0.1
Insider Trading Arrangements
3 Months Ended
Dec. 31, 2024
Trading Arrangements, by Individual  
Rule 10b5-1 Arrangement Adopted false
Non-Rule 10b5-1 Arrangement Adopted false
Rule 10b5-1 Arrangement Terminated false
Non-Rule 10b5-1 Arrangement Terminated false
v3.25.0.1
Insider Trading Policies and Procedures
12 Months Ended
Dec. 31, 2024
Insider Trading Policies and Procedures [Line Items]  
Insider Trading Policies and Procedures Adopted true
v3.25.0.1
Cybersecurity Risk Management and Strategy Disclosure
12 Months Ended
Dec. 31, 2024
Cybersecurity Risk Management, Strategy, and Governance [Line Items]  
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block] We rely on the information technology and systems maintained by our manager, RMR, and rely on our manager to identify, assess and manage material risks from cybersecurity threats. RMR takes various actions, and incurs significant costs, to maintain and protect the operation and security of information technology and systems, including the data maintained in those systems. Our Audit Committee oversees cybersecurity matters, including the material risks related thereto, and regularly receives updates from RMR’s Chief Information Officer regarding the development and advancement of its cybersecurity strategy, as well as the related risks. In the event of a cybersecurity incident, RMR has a detailed incident response plan in place for contacting authorities and informing key stakeholders, including our management.
Cybersecurity Risk Management Processes Integrated [Flag] true
Cybersecurity Risk Management Processes Integrated [Text Block] We rely on the information technology and systems maintained by our manager, RMR, and rely on our manager to identify, assess and manage material risks from cybersecurity threats. RMR takes various actions, and incurs significant costs, to maintain and protect the operation and security of information technology and systems, including the data maintained in those systems.
Cybersecurity Risk Management Third Party Engaged [Flag] true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag] false
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block] Our Audit Committee oversees cybersecurity matters, including the material risks related thereto, and regularly receives updates from RMR’s Chief Information Officer regarding the development and advancement of its cybersecurity strategy, as well as the related risks.
Cybersecurity Risk Role of Management [Text Block] We rely on the information technology and systems maintained by our manager, RMR, and rely on our manager to identify, assess and manage material risks from cybersecurity threats. RMR takes various actions, and incurs significant costs, to maintain and protect the operation and security of information technology and systems, including the data maintained in those systems. Our Audit Committee oversees cybersecurity matters, including the material risks related thereto, and regularly receives updates from RMR’s Chief Information Officer regarding the development and advancement of its cybersecurity strategy, as well as the related risks. In the event of a cybersecurity incident, RMR has a detailed incident response plan in place for contacting authorities and informing key stakeholders, including our management.
Cybersecurity Risk Management Positions or Committees Responsible [Flag] true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block] Our Audit Committee oversees cybersecurity matters, including the material risks related thereto, and regularly receives updates from RMR’s Chief Information Officer regarding the development and advancement of its cybersecurity strategy, as well as the related risks.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block] In the event of a cybersecurity incident, RMR has a detailed incident response plan in place for contacting authorities and informing key stakeholders, including our management.
v3.25.0.1
Summary of Significant Accounting Policies (Policies)
12 Months Ended
Dec. 31, 2024
Accounting Policies [Abstract]  
Basis of Presentation
Basis of Presentation. These consolidated financial statements include the accounts of us and our subsidiaries, all of which are wholly owned directly or indirectly by us. All intercompany transactions and balances with or among our consolidated subsidiaries have been eliminated.
Real Estate Properties
Real Estate Properties. We record our properties at cost and provide depreciation on real estate investments on a straight line basis over estimated useful lives generally ranging from 7 to 40 years. In some circumstances, we engage independent real estate appraisal firms to provide market information and evaluations which are relevant to our purchase price allocations and determinations of useful lives; however, we are ultimately responsible for the purchase price allocations and determinations of useful lives.
We allocate the purchase prices of our properties to land, buildings and improvements based on determinations of the relative fair values of these assets assuming the properties are vacant. We determine the fair value of each property using methods similar to those used by independent appraisers, which may involve estimated cash flows that are based on a number of factors, including capitalization rates and discount rates, among others. We allocate a portion of the purchase price of our properties to above market and below market leases based on the present value (using an interest rate which reflects the risks associated with acquired in place leases at the time each property was acquired by us) of the difference, if any, between (i) the contractual amounts to be paid pursuant to the acquired in place leases and (ii) our estimates of fair market lease rates for the corresponding leases, measured over a period equal to the terms of the respective leases. We allocate a portion of the purchase price to acquired in place leases and tenant relationships based upon market estimates to lease up the property based on the leases in place at the time of purchase. We allocate this aggregate value between acquired in place lease values and tenant relationships based on our evaluation of the specific characteristics of each tenant’s lease. However, we have not separated the value of tenant relationships from the value of acquired in place leases because such value and related amortization expense is immaterial to the accompanying consolidated financial statements. In making these allocations, we consider factors such as estimated carrying costs during the expected lease up periods, including real estate taxes, insurance and other operating income and expenses and costs, such as leasing commissions, legal and other related expenses, to execute similar leases in current market conditions at the time a property was acquired by us. If the value of tenant relationships becomes material in the future, we may separately allocate those amounts and amortize the allocated amounts over the estimated life of the relationships. For transactions that qualify as business combinations, we allocate the excess, if any, of the consideration over the fair value of the assets acquired to goodwill.
We amortize capitalized above market lease values (included in acquired real estate leases, net in our consolidated balance sheets) and below market lease values (presented as assumed real estate lease obligations, net in our consolidated balance sheets) as a reduction or increase, respectively, to rental income over the terms of the associated leases. Such amortization resulted in net increases to rental income of $402 and $252 during the years ended December 31, 2024 and 2023, respectively. We amortize the value of acquired in place leases (included in acquired real estate leases, net in our consolidated balance sheets), exclusive of the value of above market and below market acquired in place leases, over the terms of the associated leases. Such amortization, which is included in depreciation and amortization expense, amounted to $65,039 and $93,057 during the years ended December 31, 2024 and 2023, respectively. If a lease is terminated prior to its stated expiration, we write off the unamortized amounts relating to that lease.
We regularly evaluate whether events or changes in circumstances have occurred that could indicate an impairment in the value of long lived assets. Impairment indicators may include declining tenant occupancy, lack of progress releasing vacant space, tenant bankruptcies, low long term prospects for improvement in property performance, weak or declining tenant profitability, cash flow or liquidity, our decision to dispose of an asset before the end of its estimated useful life and legislative, market or industry changes that could permanently reduce the value of a property. If there is an indication that the carrying value of an asset is not recoverable, we estimate the projected undiscounted cash flows to determine if an impairment loss should be recognized. The future net undiscounted cash flows are subjective and are based in part on assumptions regarding hold periods, market rents and terminal capitalization rates. We determine the amount of any impairment loss by comparing the historical carrying value to estimated fair value. We estimate fair value through an evaluation of recent financial performance and projected discounted cash flows using standard industry valuation techniques. In addition to consideration of impairment upon the events or changes in circumstances described above, we regularly evaluate the remaining useful lives of our long lived assets. If we change our estimate of the remaining useful lives, we allocate the carrying value of the affected assets over their revised remaining useful lives.
Cash and Cash Equivalents
Cash and Cash Equivalents. We consider highly liquid investments with original maturities of three months or less at the date of purchase to be cash equivalents.
Restricted Cash
Restricted Cash. Restricted cash consists of amounts escrowed for future real estate taxes, insurance, leasing costs, capital expenditures and debt service, as required by certain of our mortgage debts.
Deferred Leasing Costs Deferred Leasing Costs. Deferred leasing costs include brokerage costs and inducements associated with our entering leases. We amortize deferred leasing costs, which are included in depreciation and amortization expense, and inducements, which are included as a reduction to rental income, on a straight line basis over the terms of the respective leases. Legal costs associated with the execution of our leases are expensed as incurred and included in general and administrative expenses in our consolidated statements of comprehensive income (loss).
Debt Issuance Costs Debt Issuance Costs. Costs related to the issuance or assumption of debt are capitalized and amortized to interest expense over the terms of the respective loans. Debt issuance costs, net of accumulated amortization, for our $325,000 secured revolving credit facility and our prior $750,000 unsecured revolving credit facility, or our prior revolving credit facility, are included in other assets in our consolidated balance sheets. As of December 31, 2024, debt issuance costs for our revolving credit facility were $7,838 and accumulated amortization of debt issuance costs for our revolving credit facility was $2,396. As of December 31, 2023, debt issuance costs for our prior revolving credit facility were $5,328 and accumulated amortization of debt issuance costs for our prior revolving credit facility was $5,240. Debt issuance costs, net of accumulated amortization, for our senior notes, term loan and mortgage notes payable are presented as a direct deduction from the associated debt liability in our consolidated balance sheets.
Equity Method Investments
Equity Method Investments. As of December 31, 2024, we had a noncontrolling ownership interest of 51% in an unconsolidated joint venture that owned two properties. The properties owned by the joint venture were encumbered by $50,000 of mortgage indebtedness. We did not control the activities that are most significant to the joint venture and, as a result, we accounted for our investment in the joint venture under the equity method of accounting. See Note 4 for more information regarding our unconsolidated joint ventures.
We periodically evaluate our equity method investments for possible indicators of other than temporary impairment whenever events or changes in circumstances indicate the carrying amount of the investment might not be recoverable. These
indicators may include the length of time and the extent to which the market value of our investment is below our carrying value, the financial condition of our investees, our intent and ability to be a long term holder of the investment and other considerations. If the decline in fair value is judged to be other than temporary, we record an impairment charge to adjust the basis of the investment to its estimated fair value.
Revenue Recognition
Revenue Recognition. We are a lessor of commercial office properties. Our leases provide our tenants with the contractual right to use and economically benefit from all of the physical space specified in the leases; therefore, we have determined to evaluate our leases as lease arrangements.
Our leases provide for base rent payments and in addition may include variable payments. Rental income from operating leases, including any payments derived by index or market-based indices, is recognized on a straight line basis over the lease term when we have determined that the collectability of substantially all of the lease payments is probable. Some of our leases have options to extend or terminate the lease exercisable at the option of our tenants, which are considered when determining the lease term. Allowances for bad debts are recognized as a direct reduction of rental income.
Certain of our leases contain non-lease components, such as property level operating expenses and capital expenditures reimbursed by our tenants as well as other required lease payments. We have made the policy election to not separate the lease and non-lease components because (i) the lease components are operating leases and (ii) the timing and pattern of recognition of the non-lease components are the same as those of the lease components. We apply Accounting Standards Codification 842, Leases, to the combined component. Income derived by our leases is recorded in rental income in our consolidated statements of comprehensive income (loss).
Certain tenants are obligated to pay directly their obligations under their leases for insurance, real estate taxes and certain other expenses. These obligations, which have been assumed by the tenants under the terms of their respective leases, are not reflected in our consolidated financial statements. To the extent any tenant responsible for any such obligations under the applicable lease defaults on such lease or if it is deemed probable that the tenant will fail to pay for such obligations, we would record a liability for such obligations. See Note 5 for more information regarding our leases.
Income Taxes Income Taxes. We have elected to be taxed as a REIT under the United States Internal Revenue Code of 1986, as amended, and, accordingly, we generally will not be subject to federal income taxes provided we distribute our taxable income and meet certain other requirements to qualify for taxation as a REIT. We are, however, subject to certain state and local taxes.
Per Common Share Amounts
Per Common Share Amounts. We calculate basic earnings per common share using the two class method. We calculate diluted earnings per share using the more dilutive of the two class method or the treasury stock method. Unvested share awards and other potentially dilutive common shares, together with the related impact on earnings, are considered when calculating diluted earnings per share.
Use of Estimates
Use of Estimates. Preparation of these financial statements in conformity with GAAP requires us to make estimates and assumptions that may affect the amounts reported in these consolidated financial statements and related notes. The actual results could differ from these estimates. Significant estimates in the consolidated financial statements include purchase price allocations, useful lives of fixed assets and assessment of impairment of real estate and the related intangibles.
New Accounting Pronouncements
New Accounting Pronouncements.In November 2023, the Financial Accounting Standards Board, or FASB, issued Accounting Standards Update, or ASU, No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, which requires public entities, including those with a single reportable segment, to: (i) provide disclosures of significant segment expenses and other segment items if they are regularly provided to the chief operating decision maker, or the CODM, and included in each reported measure of segment profit or loss; (ii) provide all annual disclosures about a reportable segment’s profit or loss and assets currently required by Accounting Standards Codification 280, Segment Reporting, in interim periods; and (iii) disclose the CODM’s title and position, as well as an explanation of how the CODM uses the reported measures and other disclosures. ASU No. 2023-07 does not change how a public entity identifies its operating segments, aggregates those operating segments or applies the quantitative thresholds to determine its reportable segments. We adopted ASU No. 2023-07 effective December 31, 2024. As a result we have included additional information related to the required disclosures within Note 12 to our consolidated financial statements.
In December 2024, the FASB issued ASU No. 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statements Expenses, which requires public entities to provide disaggregated disclosure of certain income statement expense captions within the footnotes to the financial statements. ASU No. 2024-03 is effective for fiscal years beginning after December 15, 2026, and interim periods after December 15, 2027, with early adoption permitted. We are currently evaluating the impact ASU 2024-03 will have on our consolidated financial statements.
v3.25.0.1
Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2024
Accounting Policies [Abstract]  
Schedule of Real Estate Properties
As of December 31, 2024 and 2023, our acquired real estate leases and assumed real estate lease obligations, excluding properties classified as held for sale, were as follows:
 December 31,
20242023
Acquired real estate leases:
Capitalized above market lease values$7,715 $14,758 
Less: accumulated amortization(5,814)(10,876)
Capitalized above market lease values, net1,901 3,882 
Lease origination value433,347 572,766 
Less: accumulated amortization(241,509)(313,150)
Lease origination value, net191,838 259,616 
Acquired real estate leases, net$193,739 $263,498 
Assumed real estate lease obligations:
Capitalized below market lease values$14,177 $25,678 
Less: accumulated amortization(4,652)(14,013)
Assumed real estate lease obligations, net$9,525 $11,665 
v3.25.0.1
Per Common Share Amounts (Tables)
12 Months Ended
Dec. 31, 2024
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The calculation of basic and diluted earnings per share is as follows (amounts in thousands, except per share data):
Year Ended December 31,
20242023
Numerators:
Net loss$(136,107)$(69,432)
Income attributable to unvested participating securities(14)(305)
Net loss used in calculating earnings per common share$(136,121)$(69,737)
Denominators:
Weighted average common shares outstanding - basic and diluted (1)
51,806 48,389 
Net loss per common share - basic and diluted$(2.63)$(1.44)
(1)For the years ended December 31, 2024 and 2023 there were no dilutive common shares.
v3.25.0.1
Real Estate Properties (Tables)
12 Months Ended
Dec. 31, 2024
Real Estate [Abstract]  
Schedule of Disposal Groups
Date of SaleNumber of Properties LocationRentable Square Feet
Gross
 Sales Price (1)
Gain (Loss) on Sale of Real Estate
(Loss) on Impairment of Real Estate
March 20241
Chicago, IL (2)
248,000 $38,500 $(2,448)$— 
July 20241Malden, MA126,000 7,800 (10)(13,973)
August 20243Indianapolis, IN434,000 10,100 729 (50,851)
September 20241Atlanta, GA126,000 17,610 8,690 — 
September 20241San Jose, CA64,000 10,800 (954)(819)
November 20241Colorado Springs, CO156,000 26,164 12,962 — 
November 20241Rocklin, CA19,000 2,627 1,084 — 
November 20243Lakewood, CO213,000 8,100 (9,132)— 
December 20245Atlanta, GA379,000 18,100 79 (21,937)
December 20241Florence, KY168,000 3,250 (6,966)— 
December 20241Sacramento, CA338,000 21,000 (6,502)(33,902)
December 20241Reston, VA131,000 7,200 (869)(18,540)
December 20241Kansas City, MO87,000 8,000 32 (4,370)
December 20241Westford, MA175,000 5,100 (6,481)(3,554)
December 20242Provo, UT125,000 15,000 2,376 — 
242,789,000 $199,351 $(7,410)$(147,946)
(1)Gross sales price is the gross contract price, excluding closing costs.
(2)Property was classified as held for sale as of December 31, 2023. We recorded an $11,299 loss on impairment of real estate during the year ended December 31, 2023 to reduce the carrying value of this property to its estimated fair value less costs to sell as of December 31, 2023.
As of December 31, 2024, we had six properties, that are under agreement to sell for an aggregate sales price of $54,763, excluding closing costs, five of which are classified as held for sale in our consolidated balance sheet, as summarized below:
Date of Sale AgreementNumber of PropertiesLocationRentable Square Feet
Gross Sales Price (1)
(Loss) on Impairment of Real Estate
September 20242Santa Clara, CA149,000 $21,150 $(11,041)
October 20242Tempe, AZ101,000 10,738 — 
December 20241Detroit, MI56,000 4,750 (8,001)
December 20241
Reston, VA (2)
275,000 18,125 — 
6581,000 $54,763 $(19,042)
(1)Gross sales price is the contract price, excluding closing costs.
(2)Property did not meet held for sale criteria as of December 31, 2024.
Date of SaleNumber of Properties LocationRentable Square Feet
Gross
 Sales Price (1)
Gain (Loss) on Sale of Real Estate
January 20233
Richmond, VA (2)
89,000 $5,350 $2,548 
April 20231Phoenix, AZ107,000 4,900 511 
June 20231Vernon Hills, IL100,000 2,825 (2,816)
September 20231Windsor Mill, MD80,000 10,500 244 
October 20231Santa Clara, CA66,000 16,049 705 
November 20231Chelmsford, MA111,000 5,250 2,588 
8properties553,000 $44,874 $3,780 
(1)Gross sales price is the gross contract price, excluding closing costs.
(2)Properties were classified as held for sale as of December 31, 2022.
Schedule of Joint Ventures
As of December 31, 2024 and 2023, our investments in our unconsolidated joint ventures consisted of the following:
OPI OwnershipOPI Carrying Value of Investments at December 31, Number of PropertiesLocationRentable Square Feet
Joint Venture20242023
Prosperity Metro Plaza51%$17,370 $18,128 2Fairfax, VA346,000
1750 H Street, NW50%— — 1Washington, D.C.125,000
Total $17,370 $18,128 3471,000
The following table provides a summary of the mortgage debt of our unconsolidated joint ventures as of December 31, 2024 and 2023:
Principal Balance at December 31,
Joint Venture
 Interest Rate (1)
Maturity Date
2024 (2)
2023 (2)
Prosperity Metro Plaza4.09%12/1/2029$50,000 $50,000 
1750 H Street, NW3.69%8/1/2027— 32,000 
Weighted Average / Total3.93%$50,000 $82,000 
(1)Includes the effect of mark to market purchase accounting.
(2)Reflects the entire balance of the debt secured by the properties and is not adjusted to reflect the interests in the joint ventures we did not own. None of the debt is recourse to us.
v3.25.0.1
Leases (Tables)
12 Months Ended
Dec. 31, 2024
Leases [Abstract]  
Schedule of Future Contractual Lease Payments to be Received
The following operating lease maturity analysis presents the future contractual lease payments to be received by us through 2053 as of December 31, 2024:
YearAmount
2025$318,530 
2026310,043 
2027291,562 
2028259,443 
2029249,250 
Thereafter1,296,713 
Total$2,725,541 
v3.25.0.1
Business and Property Management Agreements with RMR (Tables)
12 Months Ended
Dec. 31, 2024
Related Party Transactions [Abstract]  
Schedule of Related Party Transactions
For the years ended December 31, 2024 and 2023, the business management fees, property management fees and construction supervision fees and expense reimbursements recognized in our consolidated financial statements were as follows:
Year Ended December 31,
20242023
Pursuant to business management agreement:
Business management fees (1)
$13,145 $14,751 
Pursuant to property management agreement:
Property management fees (2)
$13,584 $14,890 
Construction supervision fees2,872 8,390 
$16,456 $23,280 
Expense Reimbursement:
Property level expenses
$25,797 $25,872 
(1)The net business management fees we recognized for the years ended December 31, 2024 and 2023 each reflect a reduction of $603 for the amortization of the liability we recorded in connection with our former investment in RMR Inc.
(2)The net property management fees we recognized for the years ended December 31, 2024 and 2023 each reflect a reduction of $484 for the amortization of the liability we recorded in connection with our former investment in RMR Inc.
v3.25.0.1
Indebtedness (Tables)
12 Months Ended
Dec. 31, 2024
Debt Disclosure [Abstract]  
Schedule of Long-Term Debt Instruments
As of December 31, 2024 and 2023, our outstanding indebtedness consisted of the following:
 December 31,
20242023
Unsecured revolving credit facility, due in 2024$— $205,000 
Secured revolving credit facility, due in 2027325,000 — 
Secured term loan, due in 2027100,000 — 
Senior unsecured notes, 4.250% interest rate, due in 2024 (1)
— 350,000 
Senior unsecured notes, 4.500% interest rate, due in 2025 (2)
171,586 650,000 
Senior unsecured notes, 2.650% interest rate, due in 2026
140,488 300,000 
Senior unsecured notes, 2.400% interest rate, due in 2027
80,784 350,000 
Senior secured notes, 3.250% interest rate, due in 2027 (3)
444,992 — 
Mortgage note payable, 8.272% interest rate, due in 2028
42,700 42,700 
Mortgage note payable, 8.139% interest rate, due in 2028
26,340 26,340 
Mortgage note payable, 7.671% interest rate, due in 2028
54,300 54,300 
Senior secured notes, 9.000% interest rate, due in March 2029 (4)
300,000 — 
Senior secured notes, 9.000% interest rate, due in September 2029 (5)
609,999 — 
Senior unsecured notes, 3.450% interest rate, due in 2031
114,355 400,000 
Mortgage note payable, 7.210% interest rate, due in 2033
30,680 30,680 
Mortgage note payable, 7.305% interest rate, due in 2033
8,400 8,400 
Mortgage note payable, 7.717% interest rate, due in 2033
14,900 14,900 
Senior unsecured notes, 6.375% interest rate, due in 2050
162,000 162,000 
2,626,524 2,594,320 
Unamortized debt premiums, discounts and issuance costs(91,890)(21,711)
$2,534,634 $2,572,609 
(1)These senior notes were redeemed in March 2024.
(2)Certain of these senior notes were redeemed through a series of exchange transactions during the year ended December 31, 2024. The remaining balance of $171,586 at December 31, 2024 was redeemed in cash in January 2025.
(3)These senior notes were issued in December 2024.
(4)These senior notes were issued in February 2024.
(5)These senior notes were issued in June and October 2024.
Schedule of Senior Note Exchanges
In June and October 2024, through two exchange transactions, we exchanged $609,999 in aggregate principal amount of new 9.000% senior secured notes due September 2029, or the September 2029 Notes, for an aggregate $895,373 of certain of our outstanding senior unsecured notes, or the Existing Notes, and an aggregate 1,406,952 of our common shares valued at $2.26 per share, and such transactions, the 2029 Senior Note Exchanges, as follows:
Existing Notes ExchangedAggregate Principal Amount of Existing Notes Accepted for Exchange
Aggregate Principal Amount of September 2029 Notes Delivered
Existing 4.50% 2025 Notes
$181,000 $183,981 
Existing 2.650% 2026 Notes
159,512 114,803 
Existing 2.400% 2027 Notes
269,216 164,162 
Existing 3.450% 2031 Notes
285,645 147,053 
Total$895,373 $609,999 
Schedule of Required Principal Payments
The required principal payments due during the next five years and thereafter under all our outstanding consolidated debt as of December 31, 2024 were as follows:
YearPrincipal Payment
2025 (1)
$197,586 
2026291,488 
2027773,776 
2028123,487 
2029910,278 
Thereafter329,909 
Total (2)
$2,626,524 
(1)Includes $171,586 aggregate principal of the 2025 Notes, which were redeemed in full in January 2025.
(2)Total consolidated debt outstanding as of December 31, 2024, net of unamortized premiums, discounts and issuance costs totaling $91,890, was $2,534,634.
v3.25.0.1
Fair Value of Assets and Liabilities (Tables)
12 Months Ended
Dec. 31, 2024
Fair Value Disclosures [Abstract]  
Schedule of Assets Measured at Fair Value
The following table presents certain of our assets measured at fair value at December 31, 2024, categorized by level of inputs as defined in the fair value hierarchy under GAAP, used in the valuation of each asset:
Fair Value at Reporting Date Using
DescriptionTotalQuoted Prices in Active Markets for Identical Assets (Level 1)Significant Other Observable Inputs (Level 2)Significant Unobservable Inputs (Level 3)
Non-recurring Fair Value Measurements Assets
Assets of properties held for sale (1)
$25,909 $— $25,909 $— 
(1)We recorded an impairment charge of $19,042 to reduce the carrying values of three properties that are classified as held for sale in our condensed consolidated balance sheet to their estimated fair values less estimated costs to sell of $739, based on negotiated sales prices with third party buyers (Level 2 inputs as defined in the fair value hierarchy under GAAP). See Note 4 for more information.
Schedule of Fair Value and Carrying Value of Financial Instruments At December 31, 2024 and 2023, the fair values of our financial instruments approximated their carrying values in our consolidated financial statements, due to their short term nature or floating interest rates, except as follows:
 As of December 31, 2024As of December 31, 2023
Financial Instrument
Carrying Value(1)
Fair Value
Carrying Value(1)
Fair Value
Senior unsecured notes, 4.25% interest rate, due in 2024
$— $— $349,144 $331,510 
Senior unsecured notes, 4.50% interest rate, due in 2025
171,607 169,302 646,266 510,445 
Senior unsecured notes, 2.650% interest rate, due in 2026
139,578 106,078 298,464 185,934 
Senior unsecured notes, 2.400% interest rate, due in 2027
80,486 49,475 348,086 196,147 
Senior secured notes, 3.250% interest rate, due in 2027
363,432 383,806 — — 
Senior secured notes, 9.000% interest rate, due in March 2029
275,632 293,100 — — 
Senior secured notes, 9.000% interest rate, due in September 2029
637,052 529,436 — — 
Senior unsecured notes, 3.450% interest rate, due in 2031
113,511 49,688 396,614 199,060 
Senior unsecured notes, 6.375% interest rate, due in 2050
157,096 80,676 156,904 83,916 
Mortgage notes payable172,912 177,295 172,131 179,813 
Total $2,111,306 $1,838,856 $2,367,609 $1,686,825 
(1)Includes unamortized debt premiums, discounts and issuance costs totaling $90,218 and $21,711 as of December 31, 2024 and 2023, respectively.
v3.25.0.1
Shareholders' Equity (Tables)
12 Months Ended
Dec. 31, 2024
Equity [Abstract]  
Summary of Shares Granted And Vested Under The Terms of The Entity's 2009 Plan
A summary of shares awarded, forfeited, vested and unvested under the terms of the 2009 Plan for the years ended December 31, 2024 and 2023, is as follows:
20242023
Number of SharesWeighted Average Grant Date Fair ValueNumber of SharesWeighted Average Grant Date Fair Value
Unvested at beginning of year288,681 $12.01 231,301 $21.47 
Awarded649,198 $2.14 241,800 $6.04 
Forfeited — $— (3,700)$17.31 
Vested(346,000)$6.62 (180,720)$16.00 
Unvested at end of year591,879 $4.32 288,681 $12.01 
Schedule of Dividends
During the years ended December 31, 2024 and 2023, we paid distributions on our common shares as follows:
Annual Per Share DistributionTotal DistributionsCharacterization of Distributions
Year Return of CapitalOrdinary IncomeQualified Dividend
2024$0.04 $2,033 100.00%—%—%
2023$1.30 $63,187 100.00%—%—%
v3.25.0.1
Business (Details)
$ in Thousands
Feb. 13, 2025
USD ($)
Dec. 31, 2024
USD ($)
ft²
property
Real Estate Properties [Line Items]    
2025   $ 197,586
2026   $ 291,488
Subsequent Event    
Real Estate Properties [Line Items]    
Cash $ 113,000  
2025 26,000  
2026 $ 291,488  
Unconsolidated Properties    
Real Estate Properties [Line Items]    
Number of Properties (in properties) | property   3
Rentable area of properties (in square feet) | ft²   471,000
Joint Venture Property 1    
Real Estate Properties [Line Items]    
Percentage of ownership interest   51.00%
Joint Venture Property 1 | Unconsolidated Properties    
Real Estate Properties [Line Items]    
Number of Properties (in properties) | property   2
Rentable area of properties (in square feet) | ft²   346,000
Continuing Operations    
Real Estate Properties [Line Items]    
Number of Properties (in properties) | property   128
Rentable area of properties (in square feet) | ft²   17,763,000
v3.25.0.1
Summary of Significant Accounting Policies - Real Estate Properties, Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Real Estate [Line Items]    
Net increase (decrease) to rental income $ 402 $ 252
Amortization of the value of leases 64,636 92,805
Projected future amortization of net intangible lease assets and liabilities, excluding those classified as discontinued operations    
2025 42,347  
2026 34,401  
2027 27,444  
2028 14,981  
2029 13,462  
Thereafter 51,579  
Original Value Lease    
Real Estate [Line Items]    
Amortization of the value of leases $ 65,039 $ 93,057
Minimum | Building and Building Improvements    
Real Estate [Line Items]    
Property, plant and equipment, useful life 7 years  
Maximum | Building and Building Improvements    
Real Estate [Line Items]    
Property, plant and equipment, useful life 40 years  
Weighted Average    
Real Estate [Line Items]    
Below market, acquired lease amortization period 12 years  
Weighted Average | Above Market Lease    
Real Estate [Line Items]    
Acquired lease amortization period 4 years  
Weighted Average | Original Value Lease    
Real Estate [Line Items]    
Acquired lease amortization period 7 years 3 months 18 days  
v3.25.0.1
Summary of Significant Accounting Policies - Schedule of Real Estate Assets and Obligations (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Real Estate [Line Items]    
Acquired real estate leases, net $ 193,739 $ 263,498
Capitalized below market lease values 14,177 25,678
Less: accumulated amortization (4,652) (14,013)
Assumed real estate lease obligations, net 9,525 11,665
Above Market Lease    
Real Estate [Line Items]    
Real estate leases 7,715 14,758
Less: accumulated amortization (5,814) (10,876)
Acquired real estate leases, net 1,901 3,882
Original Value Lease    
Real Estate [Line Items]    
Real estate leases 433,347 572,766
Less: accumulated amortization (241,509) (313,150)
Acquired real estate leases, net $ 191,838 $ 259,616
v3.25.0.1
Summary of Significant Accounting Policies - Deferred Leasing and Debt Issuance Costs (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Debt Instrument [Line Items]    
Amortization of deferred leasing costs $ 10,988 $ 8,737
Deferred sales inducement cost, amortization expense 2,003 1,326
Deferred leasing costs, gross 127,095 113,433
Accumulated amortization of deferred leasing costs 29,453 26,462
Future amortization of deferred leasing costs, excluding those classified as discontinued operations    
2025 12,751  
2026 11,948  
2027 11,203  
2028 10,520  
2029 9,637  
Thereafter 41,583  
Deferred financing fees, net 65,802 16,623
Future amortization of deferred financing fees    
2025 22,519  
2026 22,192  
2027 10,086  
2028 7,310  
2029 4,268  
Thereafter 4,869  
Line of Credit    
Future amortization of deferred leasing costs, excluding those classified as discontinued operations    
Maximum borrowing capacity on revolving credit facility 425,000  
Line of Credit    
Future amortization of deferred leasing costs, excluding those classified as discontinued operations    
Maximum borrowing capacity on revolving credit facility 750,000  
Deferred financing fees, gross 7,838 5,328
Accumulated amortization of deferred financing fees 2,396 $ 5,240
Revolving credit facility | Line of Credit    
Future amortization of deferred leasing costs, excluding those classified as discontinued operations    
Maximum borrowing capacity on revolving credit facility $ 325,000  
v3.25.0.1
Summary of Significant Accounting Policies - Equity Method Investments (Details)
$ in Thousands
Dec. 31, 2024
USD ($)
property
Dec. 31, 2023
USD ($)
Joint Venture Property 1    
Schedule of Equity Method Investments [Line Items]    
Percentage of ownership interest 51.00%  
Unconsolidated Properties    
Schedule of Equity Method Investments [Line Items]    
Number of Properties (in properties) | property 3  
Unconsolidated Properties | Mortgage Note Payable    
Schedule of Equity Method Investments [Line Items]    
Principal balance | $ $ 50,000 $ 82,000
Unconsolidated Properties | Joint Venture Property 1    
Schedule of Equity Method Investments [Line Items]    
Number of Properties (in properties) | property 2  
Unconsolidated Properties | Joint Venture Property 1 | Mortgage Note Payable    
Schedule of Equity Method Investments [Line Items]    
Principal balance | $ $ 50,000  
v3.25.0.1
Per Common Share Amounts - Income (Loss) Per Common Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Numerators:    
Net loss $ (136,107) $ (69,432)
Income attributable to unvested participating securities (14) (305)
Net loss used in calculating earnings per common share $ (136,121) $ (69,737)
Denominators:    
Weighted average common shares outstanding - basic (in shares) 51,806 48,389
Weighted average common shares outstanding - diluted (in shares) 51,806 48,389
Net loss per common share - basic (in dollars per share) $ (2.63) $ (1.44)
Net loss per common share - diluted (in dollars per share) $ (2.63) $ (1.44)
v3.25.0.1
Real Estate Properties - Real Estate Properties Narrative (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2024
USD ($)
ft²
property
lease
Jun. 30, 2024
property
Dec. 31, 2023
USD ($)
Real Estate Properties [Line Items]      
Real estate aggregate undepreciated carrying value | $ $ 3,657,559   $ 4,065,679
Number of leases entered | lease 52    
Rentable square feet (in square feet) | ft² 2,042,000    
Weighted average lease term 8 years 9 months 18 days    
Expenditures committed on leases | $ $ 95,935    
Operating leases committed expenditures on leases executed in period committed but unspent tenant related obligations | $ $ 81,865    
Unconsolidated Properties      
Real Estate Properties [Line Items]      
Number of Properties (in properties) | property 3    
Area of properties (in square feet) | ft² 471,000    
Joint Venture Property 1      
Real Estate Properties [Line Items]      
Percentage of ownership interest 51.00%    
Joint Venture Property 1 | Unconsolidated Properties      
Real Estate Properties [Line Items]      
Number of Properties (in properties) | property 2    
Area of properties (in square feet) | ft² 346,000    
Disposal Group, Held-for-sale, Not Discontinued Operations      
Real Estate Properties [Line Items]      
Number of Properties (in properties) | property 5 1  
Area of properties (in square feet) | ft² 581,000    
Carrying value | $ $ 41,735    
Continuing Operations      
Real Estate Properties [Line Items]      
Number of Properties (in properties) | property 128    
Area of properties (in square feet) | ft² 17,763,000    
Real estate aggregate undepreciated carrying value | $ $ 3,699,294    
v3.25.0.1
Real Estate Properties - Acquisition Activities (Details)
$ in Thousands
1 Months Ended
Dec. 31, 2023
USD ($)
Real Estate [Abstract]  
Asset acquisition, consideration transferred $ 2,750
v3.25.0.1
Real Estate Properties - Disposition Activities (Details)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Feb. 13, 2025
USD ($)
ft²
property
Sep. 30, 2024
USD ($)
Jun. 30, 2024
USD ($)
property
Dec. 31, 2024
USD ($)
ft²
property
Dec. 31, 2023
USD ($)
ft²
property
Real Estate Properties [Line Items]          
Gain (Loss) on Sale of Real Estate       $ (7,410) $ 3,780
(Loss) on Impairment of Real Estate       $ (181,578) $ (11,299)
Impairment charge on reclassified assets   $ 2,573      
Disposal Group, Disposed of by Sale          
Real Estate Properties [Line Items]          
Number of Properties (in properties) | property       24 8
Rentable Square Feet (in square feet) | ft²       2,789,000 553,000
Gross Sales Price       $ 199,351 $ 44,874
Gain (Loss) on Sale of Real Estate       (7,410) 3,780
(Loss) on Impairment of Real Estate       $ (147,946)  
Disposal Group, Held-for-sale, Not Discontinued Operations          
Real Estate Properties [Line Items]          
Number of Properties (in properties) | property     1 5  
Rentable Square Feet (in square feet) | ft²       581,000  
Gross Sales Price       $ 54,763  
(Loss) on Impairment of Real Estate     $ (12,017) $ (19,042)  
Number of Properties, under agreement to sell | property       6  
Loss on Impairment Of Real Estate, under agreement to sell       $ (19,042)  
Disposal Group, Held-for-sale, Not Discontinued Operations | Subsequent Event          
Real Estate Properties [Line Items]          
Number of Properties (in properties) | property 1        
Rentable Square Feet (in square feet) | ft² 100,000,000        
Gross Sales Price $ 5,750        
Chicago, IL | Disposal Group, Disposed of by Sale          
Real Estate Properties [Line Items]          
Number of Properties (in properties) | property       1  
Rentable Square Feet (in square feet) | ft²       248,000  
Gross Sales Price       $ 38,500  
Gain (Loss) on Sale of Real Estate       (2,448)  
(Loss) on Impairment of Real Estate       $ 0 $ (11,299)
Malden, MA | Disposal Group, Disposed of by Sale          
Real Estate Properties [Line Items]          
Number of Properties (in properties) | property       1  
Rentable Square Feet (in square feet) | ft²       126,000  
Gross Sales Price       $ 7,800  
Gain (Loss) on Sale of Real Estate       (10)  
(Loss) on Impairment of Real Estate       $ (13,973)  
Indianapolis, IN | Disposal Group, Disposed of by Sale          
Real Estate Properties [Line Items]          
Number of Properties (in properties) | property       3  
Rentable Square Feet (in square feet) | ft²       434,000  
Gross Sales Price       $ 10,100  
Gain (Loss) on Sale of Real Estate       729  
(Loss) on Impairment of Real Estate       $ (50,851)  
Atlanta, GA | Disposal Group, Disposed of by Sale          
Real Estate Properties [Line Items]          
Number of Properties (in properties) | property       1  
Rentable Square Feet (in square feet) | ft²       126,000  
Gross Sales Price       $ 17,610  
Gain (Loss) on Sale of Real Estate       8,690  
(Loss) on Impairment of Real Estate       $ 0  
San Jose, CA | Disposal Group, Disposed of by Sale          
Real Estate Properties [Line Items]          
Number of Properties (in properties) | property       1  
Rentable Square Feet (in square feet) | ft²       64,000  
Gross Sales Price       $ 10,800  
Gain (Loss) on Sale of Real Estate       (954)  
(Loss) on Impairment of Real Estate       $ (819)  
Colorado Springs, CO | Disposal Group, Disposed of by Sale          
Real Estate Properties [Line Items]          
Number of Properties (in properties) | property       1  
Rentable Square Feet (in square feet) | ft²       156,000  
Gross Sales Price       $ 26,164  
Gain (Loss) on Sale of Real Estate       12,962  
(Loss) on Impairment of Real Estate       $ 0  
Rocklin, CA | Disposal Group, Disposed of by Sale          
Real Estate Properties [Line Items]          
Number of Properties (in properties) | property       1  
Rentable Square Feet (in square feet) | ft²       19,000  
Gross Sales Price       $ 2,627  
Gain (Loss) on Sale of Real Estate       1,084  
(Loss) on Impairment of Real Estate       $ 0  
Lakewood, CO | Disposal Group, Disposed of by Sale          
Real Estate Properties [Line Items]          
Number of Properties (in properties) | property       3  
Rentable Square Feet (in square feet) | ft²       213,000  
Gross Sales Price       $ 8,100  
Gain (Loss) on Sale of Real Estate       (9,132)  
(Loss) on Impairment of Real Estate       $ 0  
Atlanta, GA | Disposal Group, Disposed of by Sale          
Real Estate Properties [Line Items]          
Number of Properties (in properties) | property       5  
Rentable Square Feet (in square feet) | ft²       379,000  
Gross Sales Price       $ 18,100  
Gain (Loss) on Sale of Real Estate       79  
(Loss) on Impairment of Real Estate       $ (21,937)  
Florence, KY | Disposal Group, Disposed of by Sale          
Real Estate Properties [Line Items]          
Number of Properties (in properties) | property       1  
Rentable Square Feet (in square feet) | ft²       168,000  
Gross Sales Price       $ 3,250  
Gain (Loss) on Sale of Real Estate       (6,966)  
(Loss) on Impairment of Real Estate       $ 0  
Sacramento, CA | Disposal Group, Disposed of by Sale          
Real Estate Properties [Line Items]          
Number of Properties (in properties) | property       1  
Rentable Square Feet (in square feet) | ft²       338,000  
Gross Sales Price       $ 21,000  
Gain (Loss) on Sale of Real Estate       (6,502)  
(Loss) on Impairment of Real Estate       $ (33,902)  
Reston, VA | Disposal Group, Disposed of by Sale          
Real Estate Properties [Line Items]          
Number of Properties (in properties) | property       1  
Rentable Square Feet (in square feet) | ft²       131,000  
Gross Sales Price       $ 7,200  
Gain (Loss) on Sale of Real Estate       (869)  
(Loss) on Impairment of Real Estate       $ (18,540)  
Reston, VA | Disposal Group, Held-for-sale, Not Discontinued Operations          
Real Estate Properties [Line Items]          
Rentable Square Feet (in square feet) | ft²       275,000  
Gross Sales Price       $ 18,125  
Number of Properties, under agreement to sell | property       1  
Loss on Impairment Of Real Estate, under agreement to sell       $ 0  
Kansas City, MO | Disposal Group, Disposed of by Sale          
Real Estate Properties [Line Items]          
Number of Properties (in properties) | property       1  
Rentable Square Feet (in square feet) | ft²       87,000  
Gross Sales Price       $ 8,000  
Gain (Loss) on Sale of Real Estate       32  
(Loss) on Impairment of Real Estate       $ (4,370)  
Westford, MA | Disposal Group, Disposed of by Sale          
Real Estate Properties [Line Items]          
Number of Properties (in properties) | property       1  
Rentable Square Feet (in square feet) | ft²       175,000  
Gross Sales Price       $ 5,100  
Gain (Loss) on Sale of Real Estate       (6,481)  
(Loss) on Impairment of Real Estate       $ (3,554)  
Provo, UT | Disposal Group, Disposed of by Sale          
Real Estate Properties [Line Items]          
Number of Properties (in properties) | property       2  
Rentable Square Feet (in square feet) | ft²       125,000  
Gross Sales Price       $ 15,000  
Gain (Loss) on Sale of Real Estate       2,376  
(Loss) on Impairment of Real Estate       $ 0  
Santa Clara, CA | Disposal Group, Disposed of by Sale          
Real Estate Properties [Line Items]          
Number of Properties (in properties) | property         1
Rentable Square Feet (in square feet) | ft²         66,000
Gross Sales Price         $ 16,049
Gain (Loss) on Sale of Real Estate         $ 705
Santa Clara, CA | Disposal Group, Held-for-sale, Not Discontinued Operations          
Real Estate Properties [Line Items]          
Rentable Square Feet (in square feet) | ft²       149,000  
Gross Sales Price       $ 21,150  
Number of Properties, under agreement to sell | property       2  
Loss on Impairment Of Real Estate, under agreement to sell       $ (11,041)  
Tempe, AZ | Disposal Group, Held-for-sale, Not Discontinued Operations          
Real Estate Properties [Line Items]          
Rentable Square Feet (in square feet) | ft²       101,000  
Gross Sales Price       $ 10,738  
Number of Properties, under agreement to sell | property       2  
Loss on Impairment Of Real Estate, under agreement to sell       $ 0  
Detroit, MI | Disposal Group, Held-for-sale, Not Discontinued Operations          
Real Estate Properties [Line Items]          
Rentable Square Feet (in square feet) | ft²       56,000  
Gross Sales Price       $ 4,750  
Number of Properties, under agreement to sell | property       1  
Loss on Impairment Of Real Estate, under agreement to sell       $ (8,001)  
Richfield, VA | Disposal Group, Disposed of by Sale          
Real Estate Properties [Line Items]          
Number of Properties (in properties) | property         3
Rentable Square Feet (in square feet) | ft²         89,000
Gross Sales Price         $ 5,350
Gain (Loss) on Sale of Real Estate         $ 2,548
Phoenix, AZ | Disposal Group, Disposed of by Sale          
Real Estate Properties [Line Items]          
Number of Properties (in properties) | property         1
Rentable Square Feet (in square feet) | ft²         107,000
Gross Sales Price         $ 4,900
Gain (Loss) on Sale of Real Estate         $ 511
Vernon Hills, IL | Disposal Group, Disposed of by Sale          
Real Estate Properties [Line Items]          
Number of Properties (in properties) | property         1
Rentable Square Feet (in square feet) | ft²         100,000
Gross Sales Price         $ 2,825
Gain (Loss) on Sale of Real Estate         $ (2,816)
Windsor Mill, MD | Disposal Group, Disposed of by Sale          
Real Estate Properties [Line Items]          
Number of Properties (in properties) | property         1
Rentable Square Feet (in square feet) | ft²         80,000
Gross Sales Price         $ 10,500
Gain (Loss) on Sale of Real Estate         $ 244
Chelmsford, MA | Disposal Group, Disposed of by Sale          
Real Estate Properties [Line Items]          
Number of Properties (in properties) | property         1
Rentable Square Feet (in square feet) | ft²         111,000
Gross Sales Price         $ 5,250
Gain (Loss) on Sale of Real Estate         $ 2,588
v3.25.0.1
Real Estate Properties - Unconsolidated Joint Ventures (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2024
USD ($)
ft²
property
joint_venture
Dec. 31, 2023
USD ($)
Real Estate [Line Items]    
Number of joint ventures | joint_venture 1  
Unconsolidated Properties    
Real Estate [Line Items]    
Number of Properties (in properties) | property 3  
OPI Carrying Value of Investments $ 17,370 $ 18,128
Rentable Square Feet (in square feet) | ft² 471,000  
Equity method investment, difference between carrying amount and underlying equity $ 673  
Unconsolidated Properties | Mortgage Note Payable    
Real Estate [Line Items]    
Interest rate (as a percent) 3.93%  
Principal balance $ 50,000 82,000
Unconsolidated Properties | Prosperity Metro Plaza    
Real Estate [Line Items]    
Number of Properties (in properties) | property 2  
OPI Ownership 51.00%  
OPI Carrying Value of Investments $ 17,370 18,128
Rentable Square Feet (in square feet) | ft² 346,000  
Unconsolidated Properties | Prosperity Metro Plaza | Mortgage Note Payable    
Real Estate [Line Items]    
Interest rate (as a percent) 4.09%  
Principal balance $ 50,000 50,000
Unconsolidated Properties | 1750 H Street, NW    
Real Estate [Line Items]    
Number of Properties (in properties) | property 1  
OPI Ownership 50.00%  
OPI Carrying Value of Investments $ 0 0
Rentable Square Feet (in square feet) | ft² 125,000  
Unconsolidated Properties | 1750 H Street, NW | Mortgage Note Payable    
Real Estate [Line Items]    
Interest rate (as a percent) 3.69%  
Principal balance $ 0 $ 32,000
v3.25.0.1
Leases - Narrative (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2024
USD ($)
tenant
Dec. 31, 2023
USD ($)
Lessee, Lease, Description [Line Items]    
Straight line rent adjustments $ 31,102 $ 26,194
Straight line rent receivables 140,132 112,440
Variable lease, income 86,903 88,173
Tenant reimbursement income $ 82,647 $ 82,885
Lessor, Operating Lease, Payment to be Received    
Lessee, Lease, Description [Line Items]    
Number of government tenants with the right to terminate their leases | tenant 5  
Lessor, Operating Lease, Payment to be Received | Tenant with Exercisable Termination Rights | Tenant Concentration    
Lessee, Lease, Description [Line Items]    
Concentration risk, percentage 1.20%  
2025 1.40%  
2026 1.90%  
2027 2.00%  
2028 5.70%  
2029 4.10%  
2030 2.60%  
2031 1.80%  
2032 5.70%  
2034 1.50%  
2035 4.40%  
2036 0.60%  
2037 0.60%  
2040 2.30%  
Lessor, Operating Lease, Payment to be Received | Fourteen Government Tenants | Tenant Concentration    
Lessee, Lease, Description [Line Items]    
Concentration risk, percentage 2.80%  
v3.25.0.1
Leases - Operating Lease Maturity (Details)
$ in Thousands
Dec. 31, 2024
USD ($)
Leases [Abstract]  
2025 $ 318,530
2026 310,043
2027 291,562
2028 259,443
2029 249,250
Thereafter 1,296,713
Total $ 2,725,541
v3.25.0.1
Business and Property Management Agreements with RMR - Narrative (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2024
USD ($)
agreement
employee
Jan. 01, 2025
USD ($)
Line of Credit    
Related Party Transaction [Line Items]    
Maximum borrowing capacity on revolving credit facility $ 425,000  
Line of Credit | Subsequent Event    
Related Party Transaction [Line Items]    
Maximum borrowing capacity on revolving credit facility   $ 100,000
RMR LLC    
Related Party Transaction [Line Items]    
Number of employees | employee 0  
Number of agreements with RMR LLC to provide management services | agreement 2  
Management fees as percentage of gross collected rents 3.00%  
Construction supervision fees as percentage of construction costs 5.00%  
RMR LLC | Transition Services    
Related Party Transaction [Line Items]    
Duration of transition services 120 days  
RMR LLC | Amended And Restate Business Management Agreement    
Related Party Transaction [Line Items]    
Percentage applied on average historical cost of real estate investment properties acquired 0.50%  
Base management fee payable as percentage of average historical cost of real estate investments 0.70%  
Percentage of average closing stock price on stock exchange 0.70%  
Management fee payable as percentage of average market capitalization exceeding specified amount 0.50%  
Percentage for limitation and adjustments of incentive management fee payable 12.00%  
Measurement period for incentive management fee 3 years  
Average closing price of our common shares, consecutive trading days 10 days  
Highest average closing price of our common shares, final consecutive trading days 30 days  
Percentage for limitation and adjustments of incentive management fee payable, minimum total return per share percentage change 5.00%  
Percentage of base business management fee payable in common shares 1.50%  
RMR LLC | Amended And Restate Business Management Agreement | Up C Transaction    
Related Party Transaction [Line Items]    
Written notice for convenience 60 days  
Window of written notice after calendar year 60 days  
Window for written notice after change of control 12 months  
Remaining termination fee term 10 years  
RMR LLC | Amended And Restate Business Management Agreement | Maximum    
Related Party Transaction [Line Items]    
Threshold amount of real estate investments $ 250,000  
Threshold amount of average market capitalization $ 250,000  
Percentage for limitation and adjustments of incentive management fee payable, total return per share percentage, reduction 5.00%  
RMR LLC | Amended And Restate Business Management Agreement | Maximum | Up C Transaction    
Related Party Transaction [Line Items]    
Termination fee term 20 years  
RMR LLC | Amended And Restate Business Management Agreement | Minimum    
Related Party Transaction [Line Items]    
Threshold amount of real estate investments $ 250,000  
Base management fee payable average market capitalization $ 250,000  
Percentage for limitation and adjustments of incentive management fee payable, total return per share percentage, reduction 2.00%  
RMR LLC | Amended And Restate Business Management Agreement | Minimum | Up C Transaction    
Related Party Transaction [Line Items]    
Termination fee term 19 years  
v3.25.0.1
Business and Property Management Agreements with RMR - Business Management Fees, Property Management Fees and Construction Supervision Fees (Details) - RMR LLC - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Business management agreement    
Related Party Transaction [Line Items]    
Transaction amount $ 13,145 $ 14,751
Recognized amortization of the liability 603 603
Property management agreement    
Related Party Transaction [Line Items]    
Transaction amount 16,456 23,280
Reimbursement amounts 484 484
Property management fees    
Related Party Transaction [Line Items]    
Transaction amount 13,584 14,890
Construction supervision fees    
Related Party Transaction [Line Items]    
Transaction amount 2,872 8,390
Expense Reimbursement    
Related Party Transaction [Line Items]    
Transaction amount $ 25,797 $ 25,872
v3.25.0.1
Related Person Transactions (Details)
$ in Thousands
12 Months Ended
Jan. 01, 2025
USD ($)
renewalOption
year
Dec. 31, 2024
USD ($)
ft²
agreement
Dec. 31, 2023
USD ($)
Related Party Transaction [Line Items]      
Rental income   $ 501,979 $ 533,553
Officers and Other Employees | 2009 Award Plan | Common Shares      
Related Party Transaction [Line Items]      
Award vesting period   4 years  
Officers and Other Employees | 2009 Award Plan | Common Shares | Share-based Payment Arrangement, Tranche 1      
Related Party Transaction [Line Items]      
Award vesting rights, percentage   20.00%  
Officers and Other Employees | 2009 Award Plan | Common Shares | Share-based Payment Arrangement, Tranche 2      
Related Party Transaction [Line Items]      
Award vesting rights, percentage   20.00%  
Officers and Other Employees | 2009 Award Plan | Common Shares | Share-based Payment Arrangement, Tranche 3      
Related Party Transaction [Line Items]      
Award vesting rights, percentage   20.00%  
Officers and Other Employees | 2009 Award Plan | Common Shares | Share-based Payment Arrangement, Tranche 4      
Related Party Transaction [Line Items]      
Award vesting rights, percentage   20.00%  
Officers and Other Employees | 2009 Award Plan | Common Shares | Share-based Payment Arrangement, Tranche 5      
Related Party Transaction [Line Items]      
Award vesting rights, percentage   20.00%  
Related Party | RMR LLC      
Related Party Transaction [Line Items]      
Number of agreements with RMR LLC to provide management services | agreement   2  
Rental income   $ 807 $ 851
Related Party | Sonesta International Hotels Corporation      
Related Party Transaction [Line Items]      
Rental income   $ 12,428  
Rentable Square Feet (in square feet) | ft²   240,000  
Additional area of real estate property (in square feet) | ft²   5,900  
Annual base rent   $ 6,724  
Annual percentage increase   10.00%  
Annual base rent increase   5 years  
Tenant improvements   $ 76,834  
Related Party | Sonesta International Hotels Corporation | Subsequent Event      
Related Party Transaction [Line Items]      
Number of renewal options | renewalOption 2    
Renewal term 10 years    
Transaction amount $ 7,500    
Priority return increase percentage of out-of-pocket capital expenditures 8.00%    
Priority return percentage of prior year's annual owner's priority return 102.00%    
Incentive fee, percent of net operating profit 20.00%    
Loyalty fee, percent of room revenues 1.00%    
Loyalty fee, percent of qualified room revenues 4.50%    
Performance years termination threshold | year 2    
Related Party | Sonesta International Hotels Corporation | Subsequent Event | Sonesta Management Agreement, Period One      
Related Party Transaction [Line Items]      
Required escrow deposit, percent of gross revenues 1.00%    
Base management fee, percent of gross revenues 1.50%    
Brand promotion fee, percent of gross revenues 1.75%    
Related Party | Sonesta International Hotels Corporation | Subsequent Event | Sonesta Management Agreement, Period Two      
Related Party Transaction [Line Items]      
Required escrow deposit, percent of gross revenues 3.00%    
Base management fee, percent of gross revenues 3.00%    
Brand promotion fee, percent of gross revenues 3.50%    
Related Party | Sonesta International Hotels Corporation | Subsequent Event | Sonesta Management Agreement, Period Three      
Related Party Transaction [Line Items]      
Required escrow deposit, percent of gross revenues 4.00%    
v3.25.0.1
Concentration (Details)
12 Months Ended
Dec. 31, 2024
state
property
Dec. 31, 2023
Concentration Risk [Line Items]    
Number of states in which acquired properties located | state 29  
Continuing Operations    
Concentration Risk [Line Items]    
Number of Properties (in properties) | property 128  
Annualized Rental Income, Excluding Properties Classified as Discontinued Operations | Tenant Concentration | U S Government, State Governments, and Other Governments    
Concentration Risk [Line Items]    
Concentration risk, percentage 24.80% 27.50%
Annualized Rental Income, Excluding Properties Classified as Discontinued Operations | Tenant Concentration | U.S. Government    
Concentration Risk [Line Items]    
Concentration risk, percentage 17.00% 19.50%
Annualized Rental Income, Excluding Properties Classified as Discontinued Operations | Geographic Concentration Risk | Virginia    
Concentration Risk [Line Items]    
Concentration risk, percentage 13.20%  
Annualized Rental Income, Excluding Properties Classified as Discontinued Operations | Geographic Concentration Risk | California    
Concentration Risk [Line Items]    
Concentration risk, percentage 11.00%  
Annualized Rental Income, Excluding Properties Classified as Discontinued Operations | Geographic Concentration Risk | District of Columbia    
Concentration Risk [Line Items]    
Concentration risk, percentage 11.00%  
Annualized Rental Income, Excluding Properties Classified as Discontinued Operations | Geographic Concentration Risk | Texas    
Concentration Risk [Line Items]    
Concentration risk, percentage 10.40%  
Annualized Rental Income, Excluding Properties Classified as Discontinued Operations | Geographic Concentration Risk | Illinois    
Concentration Risk [Line Items]    
Concentration risk, percentage 10.10%  
v3.25.0.1
Indebtedness - Outstanding Debt (Details) - USD ($)
$ in Thousands
1 Months Ended
Jan. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Feb. 29, 2024
Dec. 31, 2023
Debt Instrument [Line Items]          
Borrowings outstanding     $ 2,626,524   $ 2,594,320
Unamortized debt premiums, discounts and issuance costs     (91,890)   (21,711)
Total borrowings outstanding     $ 2,534,634   2,572,609
Senior unsecured notes, 4.250% interest rate, due in 2024          
Debt Instrument [Line Items]          
Interest rate (as a percent)     4.25%    
Senior unsecured notes, 4.500% interest rate, due in 2025          
Debt Instrument [Line Items]          
Interest rate (as a percent)     4.50%    
Senior unsecured notes, 2.650% interest rate, due in 2026          
Debt Instrument [Line Items]          
Interest rate (as a percent)     2.65%    
Senior unsecured notes, 2.400% interest rate, due in 2027          
Debt Instrument [Line Items]          
Interest rate (as a percent)     2.40%    
Senior secured notes, 3.250% interest rate, due in 2027          
Debt Instrument [Line Items]          
Interest rate (as a percent)     3.25%    
Senior secured notes, 9.000% interest rate, due in March 2029          
Debt Instrument [Line Items]          
Interest rate (as a percent)     9.00%    
Senior secured notes, 9.000% interest rate, due in September 2029          
Debt Instrument [Line Items]          
Interest rate (as a percent)     9.00%    
Senior unsecured notes, 3.450% interest rate, due in 2031          
Debt Instrument [Line Items]          
Interest rate (as a percent)     3.45%    
Senior unsecured notes, 6.375% interest rate, due in 2050          
Debt Instrument [Line Items]          
Interest rate (as a percent)     6.375%    
Secured Debt          
Debt Instrument [Line Items]          
Borrowings outstanding     $ 100,000   0
Total borrowings outstanding     $ 100,000    
Senior Notes | Senior unsecured notes, 4.250% interest rate, due in 2024          
Debt Instrument [Line Items]          
Interest rate (as a percent)   4.25% 4.25%    
Borrowings outstanding     $ 0   350,000
Extinguishment of debt, amount   $ 350,000      
Senior Notes | Senior unsecured notes, 4.500% interest rate, due in 2025          
Debt Instrument [Line Items]          
Interest rate (as a percent)     4.50%    
Borrowings outstanding     $ 171,586   650,000
Senior Notes | Senior unsecured notes, 4.500% interest rate, due in 2025 | Subsequent Event          
Debt Instrument [Line Items]          
Extinguishment of debt, amount $ 171,586        
Senior Notes | Senior unsecured notes, 2.650% interest rate, due in 2026          
Debt Instrument [Line Items]          
Interest rate (as a percent)     2.65%    
Borrowings outstanding     $ 140,488   300,000
Senior Notes | Senior unsecured notes, 2.400% interest rate, due in 2027          
Debt Instrument [Line Items]          
Interest rate (as a percent)     2.40%    
Borrowings outstanding     $ 80,784   350,000
Senior Notes | Senior secured notes, 3.250% interest rate, due in 2027          
Debt Instrument [Line Items]          
Interest rate (as a percent)     3.25%    
Borrowings outstanding     $ 444,992   0
Senior Notes | Senior secured notes, 9.000% interest rate, due in March 2029          
Debt Instrument [Line Items]          
Interest rate (as a percent)     9.00% 9.00%  
Borrowings outstanding     $ 300,000   0
Senior Notes | Senior secured notes, 9.000% interest rate, due in September 2029          
Debt Instrument [Line Items]          
Interest rate (as a percent)     9.00%    
Borrowings outstanding     $ 609,999   0
Senior Notes | Senior unsecured notes, 3.450% interest rate, due in 2031          
Debt Instrument [Line Items]          
Interest rate (as a percent)     3.45%    
Borrowings outstanding     $ 114,355   400,000
Mortgage Note Payable          
Debt Instrument [Line Items]          
Total borrowings outstanding     $ 177,320    
Mortgage Note Payable | Mortgage note payable, 8.272% interest rate, due in 2028          
Debt Instrument [Line Items]          
Interest rate (as a percent)     8.272%    
Borrowings outstanding     $ 42,700   42,700
Mortgage Note Payable | Mortgage note payable, 8.139% interest rate, due in 2028          
Debt Instrument [Line Items]          
Interest rate (as a percent)     8.139%    
Borrowings outstanding     $ 26,340   26,340
Mortgage Note Payable | Mortgage note payable, 7.671% interest rate, due in 2028          
Debt Instrument [Line Items]          
Interest rate (as a percent)     7.671%    
Borrowings outstanding     $ 54,300   54,300
Mortgage Note Payable | Mortgage note payable, 7.210% interest rate, due in 2033          
Debt Instrument [Line Items]          
Interest rate (as a percent)     7.21%    
Borrowings outstanding     $ 30,680   30,680
Mortgage Note Payable | Mortgage note payable, 7.305% interest rate, due in 2033          
Debt Instrument [Line Items]          
Interest rate (as a percent)     7.305%    
Borrowings outstanding     $ 8,400   8,400
Mortgage Note Payable | Mortgage note payable, 7.717% interest rate, due in 2033          
Debt Instrument [Line Items]          
Interest rate (as a percent)     7.717%    
Borrowings outstanding     $ 14,900   14,900
Mortgage Note Payable | Senior unsecured notes, 6.375% interest rate, due in 2050          
Debt Instrument [Line Items]          
Interest rate (as a percent)     6.375%    
Borrowings outstanding     $ 162,000   162,000
Revolving credit facility | Line of Credit | Unsecured revolving credit facility, due in 2024          
Debt Instrument [Line Items]          
Borrowings outstanding     0   205,000
Revolving credit facility | Line of Credit | Secured revolving credit facility, due in 2027          
Debt Instrument [Line Items]          
Borrowings outstanding     $ 325,000   $ 0
v3.25.0.1
Indebtedness - Narrative (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 12 Months Ended
Mar. 31, 2024
USD ($)
Feb. 29, 2024
USD ($)
property
Jan. 31, 2024
$ / shares
Dec. 31, 2024
USD ($)
property
Dec. 31, 2023
USD ($)
Debt Instrument [Line Items]          
Long-term debt       $ 2,534,634 $ 2,572,609
Proceeds from issuance of senior secured notes       338,986 0
Gain (loss) on early extinguishment of debt       $ 138,603 $ 0
Senior secured notes, 9.000% interest rate, due in March 2029          
Debt Instrument [Line Items]          
Interest rate (as a percent)       9.00%  
Senior unsecured notes, 4.250% interest rate, due in 2024          
Debt Instrument [Line Items]          
Interest rate (as a percent)       4.25%  
Line of Credit          
Debt Instrument [Line Items]          
Maximum borrowing capacity on revolving credit facility       $ 425,000  
Interest rate premium (as a percent)       3.50%  
Secured Debt          
Debt Instrument [Line Items]          
Principal balance       $ 100,000  
Long-term debt       100,000  
Senior Notes | Senior secured notes, 9.000% interest rate, due in March 2029          
Debt Instrument [Line Items]          
Principal balance       $ 300,000  
Number of properties used to secured mortgage note | property   17   17  
Interest rate (as a percent)   9.00%   9.00%  
Proceeds from issuance of senior secured notes   $ 270,712      
Book value of properties collateralized       $ 621,506  
Senior Notes | Senior unsecured notes, 4.250% interest rate, due in 2024          
Debt Instrument [Line Items]          
Interest rate (as a percent) 4.25%     4.25%  
Extinguishment of debt, amount $ 350,000        
Gain (loss) on early extinguishment of debt       $ (425)  
Revolving credit facility | Line of Credit          
Debt Instrument [Line Items]          
Maximum borrowing capacity on revolving credit facility       $ 325,000  
Number of properties used to secured mortgage note | property       19  
Aggregate gross book value of real estate assets       $ 1,030,889  
Debt instrument extension term     1 year    
Commitment fee percentage       0.25%  
Secured Debt | Line of Credit          
Debt Instrument [Line Items]          
Number of properties used to secured mortgage note | property       19  
Aggregate gross book value of real estate assets       $ 1,030,889  
Secured Debt | Senior Notes          
Debt Instrument [Line Items]          
Aggregate gross book value of real estate assets       721,375  
Line of Credit          
Debt Instrument [Line Items]          
Maximum borrowing capacity on revolving credit facility       $ 750,000  
Distribution rate (in dollars per share) | $ / shares     $ 0.01    
Interest rate premium (as a percent)       1.45%  
Commitment fee percentage       0.30%  
Interest rate (as a percent)       7.90% 6.90%
Weighted average annual interest rate       8.70% 6.50%
v3.25.0.1
Indebtedness - Senior Notes Exchange Narrative (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 5 Months Ended 12 Months Ended
Feb. 07, 2025
USD ($)
Jan. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
property
$ / shares
shares
Oct. 31, 2024
USD ($)
$ / shares
shares
Dec. 31, 2024
USD ($)
property
$ / shares
shares
Dec. 31, 2023
USD ($)
Debt Conversion [Line Items]            
Gain (loss) on early extinguishment of debt         $ 138,603 $ 0
Long-term debt     $ 2,534,634   2,534,634 $ 2,572,609
2029 Senior Note Exchanges            
Debt Conversion [Line Items]            
Aggregate Principal Amount of Notes Delivered       $ 609,999    
Aggregate Principal Amount of Existing Notes Accepted for Exchange       $ 895,373    
Debt conversion, shares issued (in shares) | shares       1,406,952    
Common share price (in dollars per share) | $ / shares       $ 2.26    
Gain (loss) on early extinguishment of debt         $ 212,735  
2027 Senior Note Exchange            
Debt Conversion [Line Items]            
Debt conversion, shares issued (in shares) | shares     11,532,794      
Common share price (in dollars per share) | $ / shares     $ 1.37   $ 1.37  
Gain (loss) on early extinguishment of debt         $ (87,064)  
2025 Notes Exchange            
Debt Conversion [Line Items]            
Debt conversion, shares issued (in shares) | shares         7,565,722  
Common share price (in dollars per share) | $ / shares     $ 2.07   $ 2.07  
Gain (loss) on early extinguishment of debt         $ 939  
Senior Notes | Secured Debt            
Debt Conversion [Line Items]            
Aggregate gross book value of real estate assets     $ 721,375   $ 721,375  
Line of Credit | Revolving credit facility            
Debt Conversion [Line Items]            
Number of properties used to secured mortgage note | property     19   19  
Aggregate gross book value of real estate assets     $ 1,030,889   $ 1,030,889  
Line of Credit | Secured Debt            
Debt Conversion [Line Items]            
Number of properties used to secured mortgage note | property     19   19  
Aggregate gross book value of real estate assets     $ 1,030,889   $ 1,030,889  
Mortgage Note Payable            
Debt Conversion [Line Items]            
Number of properties used to secured mortgage note | property     7   7  
Aggregate gross book value of real estate assets     $ 304,673   $ 304,673  
Long-term debt     $ 177,320   $ 177,320  
Senior secured notes, 9.000% interest rate, due in September 2029 | 2029 Senior Note Exchanges            
Debt Conversion [Line Items]            
Interest rate of new notes       9.00%    
Senior secured notes, 9.000% interest rate, due in September 2029 | Senior Notes            
Debt Conversion [Line Items]            
Number of properties used to secured mortgage note | property     19   19  
Senior secured notes, 3.250% interest rate, due in 2027 | 2027 Senior Note Exchange            
Debt Conversion [Line Items]            
Aggregate Principal Amount of Notes Delivered     $ 444,992      
Interest rate of new notes     3.25%      
Debt premium     $ 25,000   $ 25,000  
Senior secured notes, 3.250% interest rate, due in 2027 | Senior Notes            
Debt Conversion [Line Items]            
Number of properties used to secured mortgage note | property     37   37  
Aggregate gross book value of real estate assets     $ 1,279,487   $ 1,279,487  
Quarterly payment     6,500      
Mandatory principal payment     125,000      
Senior unsecured notes, 4.500% interest rate, due in 2025 | 2029 Senior Note Exchanges            
Debt Conversion [Line Items]            
Aggregate Principal Amount of Notes Delivered       $ 183,981    
Aggregate Principal Amount of Existing Notes Accepted for Exchange       $ 181,000    
Interest rate of debt exchanged       4.50%    
Senior unsecured notes, 4.500% interest rate, due in 2025 | 2027 Senior Note Exchange            
Debt Conversion [Line Items]            
Aggregate Principal Amount of Existing Notes Accepted for Exchange     281,514      
Debt premium     $ 58,486   58,486  
Interest rate of debt exchanged     4.50%      
Senior unsecured notes, 4.500% interest rate, due in 2025 | 2025 Notes Exchange            
Debt Conversion [Line Items]            
Aggregate Principal Amount of Existing Notes Accepted for Exchange         $ 15,900  
Senior unsecured notes, 4.500% interest rate, due in 2025 | Senior Notes | Subsequent Event            
Debt Conversion [Line Items]            
Extinguishment of debt, amount   $ 171,586        
8.000% Senior Unsecured Notes | Exchange Offers | Subsequent Event            
Debt Conversion [Line Items]            
Aggregate Principal Amount of Notes Delivered $ 175,000          
Interest rate of new notes 8.00%          
Senior unsecured notes, 2.650% interest rate, due in 2026 | 2029 Senior Note Exchanges            
Debt Conversion [Line Items]            
Aggregate Principal Amount of Notes Delivered       $ 114,803    
Aggregate Principal Amount of Existing Notes Accepted for Exchange       $ 159,512    
Interest rate of debt exchanged       2.65%    
Senior unsecured notes, 2.650% interest rate, due in 2026 | Exchange Offers | Subsequent Event            
Debt Conversion [Line Items]            
Interest rate of debt exchanged 2.65%          
Senior unsecured notes, 2.400% interest rate, due in 2027 | 2029 Senior Note Exchanges            
Debt Conversion [Line Items]            
Aggregate Principal Amount of Notes Delivered       $ 164,162    
Aggregate Principal Amount of Existing Notes Accepted for Exchange       $ 269,216    
Interest rate of debt exchanged       2.40%    
Senior unsecured notes, 2.400% interest rate, due in 2027 | Exchange Offers | Subsequent Event            
Debt Conversion [Line Items]            
Interest rate of debt exchanged 2.40%          
Senior unsecured notes, 3.450% interest rate, due in 2031 | 2029 Senior Note Exchanges            
Debt Conversion [Line Items]            
Aggregate Principal Amount of Notes Delivered       $ 147,053    
Aggregate Principal Amount of Existing Notes Accepted for Exchange       $ 285,645    
Interest rate of debt exchanged       3.45%    
Senior unsecured notes, 3.450% interest rate, due in 2031 | Exchange Offers | Subsequent Event            
Debt Conversion [Line Items]            
Interest rate of debt exchanged 3.45%          
v3.25.0.1
Indebtedness - Senior Notes Exchange (Details) - 2029 Senior Note Exchanges
$ in Thousands
5 Months Ended
Oct. 31, 2024
USD ($)
Debt Conversion [Line Items]  
Aggregate Principal Amount of Existing Notes Accepted for Exchange $ 895,373
Aggregate Principal Amount of Notes Delivered $ 609,999
Existing 4.50% 2025 Notes  
Debt Conversion [Line Items]  
Existing Notes Exchanged, Interest rate 4.50%
Aggregate Principal Amount of Existing Notes Accepted for Exchange $ 181,000
Aggregate Principal Amount of Notes Delivered $ 183,981
Existing 2.650% 2026 Notes  
Debt Conversion [Line Items]  
Existing Notes Exchanged, Interest rate 2.65%
Aggregate Principal Amount of Existing Notes Accepted for Exchange $ 159,512
Aggregate Principal Amount of Notes Delivered $ 114,803
Existing 2.400% 2027 Notes  
Debt Conversion [Line Items]  
Existing Notes Exchanged, Interest rate 2.40%
Aggregate Principal Amount of Existing Notes Accepted for Exchange $ 269,216
Aggregate Principal Amount of Notes Delivered $ 164,162
Existing 3.450% 2031 Notes  
Debt Conversion [Line Items]  
Existing Notes Exchanged, Interest rate 3.45%
Aggregate Principal Amount of Existing Notes Accepted for Exchange $ 285,645
Aggregate Principal Amount of Notes Delivered $ 147,053
v3.25.0.1
Indebtedness - Future Principal Payments (Details) - USD ($)
$ in Thousands
1 Months Ended
Jan. 31, 2025
Feb. 13, 2025
Dec. 31, 2024
Dec. 31, 2023
Debt Instrument [Line Items]        
2025     $ 197,586  
2026     291,488  
2027     773,776  
2028     123,487  
2029     910,278  
Thereafter     329,909  
Total     2,626,524 $ 2,594,320
Unamortized debt premiums, discounts and issuance     91,890 21,711
Total debt outstanding     2,534,634 2,572,609
Subsequent Event        
Debt Instrument [Line Items]        
2025   $ 26,000    
2026   $ 291,488    
Senior unsecured notes, 4.500% interest rate, due in 2025 | Senior Notes        
Debt Instrument [Line Items]        
Total     $ 171,586 $ 650,000
Senior unsecured notes, 4.500% interest rate, due in 2025 | Senior Notes | Subsequent Event        
Debt Instrument [Line Items]        
Extinguishment of debt, amount $ 171,586      
v3.25.0.1
Fair Value of Assets and Liabilities - Asset Measured at Fair Value (Details)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
property
Dec. 31, 2023
USD ($)
Fair Value of Assets and Liabilities      
Loss on impairment of real estate   $ 181,578 $ 11,299
Disposal Group, Held-for-sale, Not Discontinued Operations      
Fair Value of Assets and Liabilities      
Loss on impairment of real estate $ 12,017 $ 19,042  
Number of properties with impairment | property   3  
Real estate costs to sell   $ 739  
Fair Value, Nonrecurring      
Fair Value of Assets and Liabilities      
Assets of properties held for sale   25,909  
Fair Value, Nonrecurring | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Fair Value of Assets and Liabilities      
Assets of properties held for sale   0  
Fair Value, Nonrecurring | Significant Other Observable Inputs (Level 2)      
Fair Value of Assets and Liabilities      
Assets of properties held for sale   25,909  
Fair Value, Nonrecurring | Significant Unobservable Inputs (Level 3)      
Fair Value of Assets and Liabilities      
Assets of properties held for sale   $ 0  
v3.25.0.1
Fair Value of Assets and Liabilities - Financial Instruments (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Fair Value of Financial Instruments    
Mortgage notes payable $ 1,872,357 $ 172,131
Unamortized debt premiums, discounts and issuance 91,890 21,711
Senior Notes and Mortgages    
Fair Value of Financial Instruments    
Unamortized debt premiums, discounts and issuance $ 90,218 21,711
Senior unsecured notes, 4.250% interest rate, due in 2024    
Fair Value of Financial Instruments    
Interest rate (as a percent) 4.25%  
Senior unsecured notes, 4.500% interest rate, due in 2025    
Fair Value of Financial Instruments    
Interest rate (as a percent) 4.50%  
Senior unsecured notes, 2.650% interest rate, due in 2026    
Fair Value of Financial Instruments    
Interest rate (as a percent) 2.65%  
Senior unsecured notes, 2.400% interest rate, due in 2027    
Fair Value of Financial Instruments    
Interest rate (as a percent) 2.40%  
Senior secured notes, 3.250% interest rate, due in 2027    
Fair Value of Financial Instruments    
Interest rate (as a percent) 3.25%  
Senior secured notes, 9.000% interest rate, due in March 2029    
Fair Value of Financial Instruments    
Interest rate (as a percent) 9.00%  
Senior secured notes, 9.000% interest rate, due in September 2029    
Fair Value of Financial Instruments    
Interest rate (as a percent) 9.00%  
Senior unsecured notes, 3.450% interest rate, due in 2031    
Fair Value of Financial Instruments    
Interest rate (as a percent) 3.45%  
Senior unsecured notes, 6.375% interest rate, due in 2050    
Fair Value of Financial Instruments    
Interest rate (as a percent) 6.375%  
Carrying Amount    
Fair Value of Financial Instruments    
Fair value of financial instruments $ 2,111,306 2,367,609
Carrying Amount | Senior unsecured notes, 4.250% interest rate, due in 2024    
Fair Value of Financial Instruments    
Senior notes 0 349,144
Carrying Amount | Senior unsecured notes, 4.500% interest rate, due in 2025    
Fair Value of Financial Instruments    
Senior notes 171,607 646,266
Carrying Amount | Senior unsecured notes, 2.650% interest rate, due in 2026    
Fair Value of Financial Instruments    
Senior notes 139,578 298,464
Carrying Amount | Senior unsecured notes, 2.400% interest rate, due in 2027    
Fair Value of Financial Instruments    
Senior notes 80,486 348,086
Carrying Amount | Senior secured notes, 3.250% interest rate, due in 2027    
Fair Value of Financial Instruments    
Senior notes 363,432 0
Carrying Amount | Senior secured notes, 9.000% interest rate, due in March 2029    
Fair Value of Financial Instruments    
Senior notes 275,632 0
Carrying Amount | Senior secured notes, 9.000% interest rate, due in September 2029    
Fair Value of Financial Instruments    
Senior notes 637,052 0
Carrying Amount | Senior unsecured notes, 3.450% interest rate, due in 2031    
Fair Value of Financial Instruments    
Senior notes 113,511 396,614
Carrying Amount | Senior unsecured notes, 6.375% interest rate, due in 2050    
Fair Value of Financial Instruments    
Senior notes 157,096 156,904
Carrying Amount | Mortgage Note Payable    
Fair Value of Financial Instruments    
Mortgage notes payable 172,912 172,131
Fair Value    
Fair Value of Financial Instruments    
Fair value of financial instruments 1,838,856 1,686,825
Fair Value | Senior unsecured notes, 4.250% interest rate, due in 2024    
Fair Value of Financial Instruments    
Senior notes 0 331,510
Fair Value | Senior unsecured notes, 4.500% interest rate, due in 2025    
Fair Value of Financial Instruments    
Senior notes 169,302 510,445
Fair Value | Senior unsecured notes, 2.650% interest rate, due in 2026    
Fair Value of Financial Instruments    
Senior notes 106,078 185,934
Fair Value | Senior unsecured notes, 2.400% interest rate, due in 2027    
Fair Value of Financial Instruments    
Senior notes 49,475 196,147
Fair Value | Senior secured notes, 3.250% interest rate, due in 2027    
Fair Value of Financial Instruments    
Senior notes 383,806 0
Fair Value | Senior secured notes, 9.000% interest rate, due in March 2029    
Fair Value of Financial Instruments    
Senior notes 293,100 0
Fair Value | Senior secured notes, 9.000% interest rate, due in September 2029    
Fair Value of Financial Instruments    
Senior notes 529,436 0
Fair Value | Senior unsecured notes, 3.450% interest rate, due in 2031    
Fair Value of Financial Instruments    
Senior notes 49,688 199,060
Fair Value | Senior unsecured notes, 6.375% interest rate, due in 2050    
Fair Value of Financial Instruments    
Senior notes 80,676 83,916
Fair Value | Mortgage Note Payable    
Fair Value of Financial Instruments    
Mortgage notes payable $ 177,295 $ 179,813
v3.25.0.1
Shareholders' Equity - Share Issuances and Share Awards (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2024
USD ($)
installment
trustee
shares
Dec. 31, 2023
USD ($)
shares
Dec. 31, 2022
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Issuance of common shares | $ $ 33,796    
Number of trustees | trustee 9    
2009 Award Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares granted (in shares) 649,198 241,800  
Number of installments | installment 5    
Unvested shares (in shares) 591,879 288,681 231,301
2025 (in shares) 176,976    
2026 (in shares) 162,596    
2027 (in shares) 143,675    
2028 (in shares) 108,632    
Estimated future compensation expense for the unvested shares | $ $ 2,222    
Weighted average period of recognition of compensation expenses (in years) 23 months    
Compensation expense | $ $ 1,662 $ 2,257  
Shares available for issuance under plan (in shares) 94,000    
Officers and Other Employees      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Issuance of common shares (in shares) 544,555 210,300  
Issuance of common shares | $ $ 1,160 $ 1,211  
Trustees      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares granted (in shares) 11,627 3,500  
Trustees | 2009 Award Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Aggregate market value of shares awarded | $ $ 225 $ 249  
Market value of common shares awarded to each trustee (in dollars) | $ $ 25 $ 28  
v3.25.0.1
Shareholders' Equity - Unvested Shares Activity (Details) - 2009 Award Plan - $ / shares
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Number of Shares    
Unvested at the beginning of the period (in shares) 288,681 231,301
Granted (in shares) 649,198 241,800
Forfeited (in shares) 0 (3,700)
Vested (in shares) (346,000) (180,720)
Unvested at the end of the period (in shares) 591,879 288,681
Weighted Average Grant Date Fair Value    
Unvested at the beginning of the period (in dollars per share) $ 12.01 $ 21.47
Granted (in dollars per share) 2.14 6.04
Forfeited (in dollars per share) 0 17.31
Vested (in dollars per share) 6.62 16.00
Unvested at the end of the period (in dollars per share) $ 4.32 $ 12.01
v3.25.0.1
Shareholders' Equity - Share Purchases (Details) - $ / shares
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Equity [Abstract]    
Share repurchases (in shares) 85,338 48,329
Stock repurchase price (in dollars per share) $ 2.25 $ 6.08
v3.25.0.1
Shareholders' Equity - Distributions (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Jan. 16, 2025
Dec. 31, 2024
Dec. 31, 2023
Class of Stock [Line Items]      
Annual Per Share Distribution (in dollars per share)   $ 0.04 $ 1.30
Total Distributions   $ 2,033 $ 63,187
Characterization of Distribution, Return of Capital   100.00% 100.00%
Characterization of Distribution, Ordinary Income   0.00% 0.00%
Characterization of Distribution, Quality Dividend   0.00% 0.00%
Subsequent Event      
Class of Stock [Line Items]      
Total Distributions $ 698    
Common distributions declared (in dollars per share) $ 0.01    
v3.25.0.1
Segment Reporting (Details)
12 Months Ended
Dec. 31, 2024
segment
Segment Reporting [Abstract]  
Number of reportable segments 1
v3.25.0.1
SCHEDULE III REAL ESTATE AND ACCUMULATED DEPRECIATION (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2024
USD ($)
property
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Real estate and accumulated depreciation      
Number of Properties | property 123    
Encumbrances $ 172,913    
Initial Cost to Company      
Land 712,433    
Buildings and Equipment 2,142,169    
Costs Capitalized Subsequent to Acquisition 822,072    
Impairment/ Writedowns (19,115)    
Cost amount carried at Close of Period      
Land 711,039    
Buildings and Equipment 2,946,520    
Total 3,657,559 $ 4,065,679 $ 3,936,074
Accumulated Depreciation $ (618,650) $ (650,179) $ (561,458)
445 Jan Davis Drive, Huntsville, AL      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 1,501    
Buildings and Equipment 1,492    
Costs Capitalized Subsequent to Acquisition 0    
Cost amount carried at Close of Period      
Land 1,501    
Buildings and Equipment 1,492    
Total 2,993    
Accumulated Depreciation $ (239)    
131 Clayton Street, Montgomery, AL      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 920    
Buildings and Equipment 9,084    
Costs Capitalized Subsequent to Acquisition 528    
Cost amount carried at Close of Period      
Land 920    
Buildings and Equipment 9,612    
Total 10,532    
Accumulated Depreciation $ (3,228)    
4344 Carmichael Road, Montgomery, AL      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 1,374    
Buildings and Equipment 11,658    
Costs Capitalized Subsequent to Acquisition 572    
Cost amount carried at Close of Period      
Land 1,374    
Buildings and Equipment 12,230    
Total 13,604    
Accumulated Depreciation $ (3,453)    
15451 North 28th Avenue, Phoenix, AZ      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 1,917    
Buildings and Equipment 7,416    
Costs Capitalized Subsequent to Acquisition 1,279    
Cost amount carried at Close of Period      
Land 1,917    
Buildings and Equipment 8,695    
Total 10,612    
Accumulated Depreciation $ (2,310)    
711 S 14th Avenue, Safford, AZ      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 460    
Buildings and Equipment 11,708    
Costs Capitalized Subsequent to Acquisition 1,165    
Impairment/ Writedowns (4,440)    
Cost amount carried at Close of Period      
Land 364    
Buildings and Equipment 8,529    
Total 8,893    
Accumulated Depreciation $ (2,036)    
2544 Campbell Place, Carlsbad, CA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 2,687    
Buildings and Equipment 1,796    
Costs Capitalized Subsequent to Acquisition 1,585    
Cost amount carried at Close of Period      
Land 2,687    
Buildings and Equipment 3,381    
Total 6,068    
Accumulated Depreciation $ (939)    
2548 Campbell Place, Carlsbad, CA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 3,082    
Buildings and Equipment 2,075    
Costs Capitalized Subsequent to Acquisition 5,156    
Cost amount carried at Close of Period      
Land 3,082    
Buildings and Equipment 7,231    
Total 10,313    
Accumulated Depreciation $ (2,461)    
Folsom Corporate Center, Folsom, CA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 2,904    
Buildings and Equipment 5,583    
Costs Capitalized Subsequent to Acquisition 1,587    
Cost amount carried at Close of Period      
Land 2,904    
Buildings and Equipment 7,170    
Total 10,074    
Accumulated Depreciation $ (1,684)    
Bayside Technology Park, Fremont, CA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 10,784    
Buildings and Equipment 648    
Costs Capitalized Subsequent to Acquisition 269    
Cost amount carried at Close of Period      
Land 10,784    
Buildings and Equipment 917    
Total 11,701    
Accumulated Depreciation $ (201)    
10949 N. Mather Boulevard, Rancho Cordova, CA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 562    
Buildings and Equipment 16,923    
Costs Capitalized Subsequent to Acquisition 1,056    
Cost amount carried at Close of Period      
Land 562    
Buildings and Equipment 17,979    
Total 18,541    
Accumulated Depreciation $ (5,186)    
11020 Sun Center Drive, Rancho Cordova, CA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 1,466    
Buildings and Equipment 8,797    
Costs Capitalized Subsequent to Acquisition 1,996    
Cost amount carried at Close of Period      
Land 1,466    
Buildings and Equipment 10,793    
Total 12,259    
Accumulated Depreciation $ (2,359)    
100 Redwood Shores Parkway, Redwood City, CA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 14,454    
Buildings and Equipment 7,721    
Costs Capitalized Subsequent to Acquisition 0    
Cost amount carried at Close of Period      
Land 14,454    
Buildings and Equipment 7,721    
Total 22,175    
Accumulated Depreciation $ (1,285)    
9815 Goethe Road, Sacramento, CA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 1,450    
Buildings and Equipment 9,465    
Costs Capitalized Subsequent to Acquisition 3,537    
Cost amount carried at Close of Period      
Land 1,450    
Buildings and Equipment 13,002    
Total 14,452    
Accumulated Depreciation $ (3,718)    
Capitol Place, Sacramento, CA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 2,290    
Buildings and Equipment 35,891    
Costs Capitalized Subsequent to Acquisition 9,997    
Cost amount carried at Close of Period      
Land 2,290    
Buildings and Equipment 45,888    
Total 48,178    
Accumulated Depreciation $ (17,395)    
4560 Viewridge Road, San Diego, CA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 4,269    
Buildings and Equipment 18,316    
Costs Capitalized Subsequent to Acquisition 5,392    
Cost amount carried at Close of Period      
Land 4,347    
Buildings and Equipment 23,630    
Total 27,977    
Accumulated Depreciation $ (15,662)    
2115 O'Nel Drive, San Jose, CA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 12,305    
Buildings and Equipment 5,062    
Costs Capitalized Subsequent to Acquisition 385    
Cost amount carried at Close of Period      
Land 12,305    
Buildings and Equipment 5,447    
Total 17,752    
Accumulated Depreciation $ (945)    
51 Rio Robles Drive, San Jose, CA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 7,416    
Buildings and Equipment 4,782    
Costs Capitalized Subsequent to Acquisition 571    
Cost amount carried at Close of Period      
Land 7,416    
Buildings and Equipment 5,353    
Total 12,769    
Accumulated Depreciation $ (1,049)    
77 Rio Robles Drive, San Jose, CA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 8,362    
Buildings and Equipment 5,393    
Costs Capitalized Subsequent to Acquisition 9,932    
Cost amount carried at Close of Period      
Land 8,362    
Buildings and Equipment 15,325    
Total 23,687    
Accumulated Depreciation $ (3,261)    
145 Rio Robles Drive, San Jose, CA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Encumbrances $ 8,078    
Initial Cost to Company      
Land 7,909    
Buildings and Equipment 3,523    
Costs Capitalized Subsequent to Acquisition 6,608    
Cost amount carried at Close of Period      
Land 7,909    
Buildings and Equipment 10,131    
Total 18,040    
Accumulated Depreciation $ (1,686)    
2500 Walsh Avenue, Santa Clara, CA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 6,687    
Buildings and Equipment 8,326    
Costs Capitalized Subsequent to Acquisition 2,922    
Cost amount carried at Close of Period      
Land 6,687    
Buildings and Equipment 11,248    
Total 17,935    
Accumulated Depreciation $ (1,426)    
603 San Juan Avenue, Stockton, CA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 563    
Buildings and Equipment 5,470    
Costs Capitalized Subsequent to Acquisition 217    
Cost amount carried at Close of Period      
Land 563    
Buildings and Equipment 5,687    
Total 6,250    
Accumulated Depreciation $ (1,771)    
350 West Java Drive, Sunnyvale, CA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 24,609    
Buildings and Equipment 462    
Costs Capitalized Subsequent to Acquisition 3,296    
Cost amount carried at Close of Period      
Land 24,609    
Buildings and Equipment 3,758    
Total 28,367    
Accumulated Depreciation $ (334)    
7958 South Chester Street, Centennial, CO      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 6,682    
Buildings and Equipment 7,153    
Costs Capitalized Subsequent to Acquisition 2,881    
Cost amount carried at Close of Period      
Land 6,682    
Buildings and Equipment 10,034    
Total 16,716    
Accumulated Depreciation $ (1,643)    
12795 West Alameda Parkway, Lakewood, CO      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 2,640    
Buildings and Equipment 23,777    
Costs Capitalized Subsequent to Acquisition (7,662)    
Impairment/ Writedowns (14,590)    
Cost amount carried at Close of Period      
Land 585    
Buildings and Equipment 3,580    
Total 4,165    
Accumulated Depreciation $ (38)    
11 Dupont Circle, NW, Washington DC      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 28,255    
Buildings and Equipment 44,743    
Costs Capitalized Subsequent to Acquisition 24,474    
Cost amount carried at Close of Period      
Land 28,255    
Buildings and Equipment 69,217    
Total 97,472    
Accumulated Depreciation $ (15,454)    
1211 Connecticut Avenue, NW, Washington DC      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 30,388    
Buildings and Equipment 24,667    
Costs Capitalized Subsequent to Acquisition 4,407    
Cost amount carried at Close of Period      
Land 30,388    
Buildings and Equipment 29,074    
Total 59,462    
Accumulated Depreciation $ (6,704)    
1401 K Street, NW, Washington DC      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 29,215    
Buildings and Equipment 34,656    
Costs Capitalized Subsequent to Acquisition 8,480    
Cost amount carried at Close of Period      
Land 29,215    
Buildings and Equipment 43,136    
Total 72,351    
Accumulated Depreciation $ (11,067)    
20 Massachusetts Avenue, Washington DC      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 12,009    
Buildings and Equipment 51,527    
Costs Capitalized Subsequent to Acquisition 223,321    
Cost amount carried at Close of Period      
Land 12,231    
Buildings and Equipment 274,626    
Total 286,857    
Accumulated Depreciation $ (60,247)    
440 First Street, NW, Washington DC      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 27,903    
Buildings and Equipment 38,624    
Costs Capitalized Subsequent to Acquisition 3,403    
Cost amount carried at Close of Period      
Land 27,903    
Buildings and Equipment 42,027    
Total 69,930    
Accumulated Depreciation $ (7,549)    
625 Indiana Avenue, Washington DC      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 26,000    
Buildings and Equipment 25,955    
Costs Capitalized Subsequent to Acquisition 12,825    
Cost amount carried at Close of Period      
Land 26,000    
Buildings and Equipment 38,780    
Total 64,780    
Accumulated Depreciation $ (14,278)    
840 First Street, NE, Washington DC      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 42,727    
Buildings and Equipment 73,278    
Costs Capitalized Subsequent to Acquisition 2,913    
Cost amount carried at Close of Period      
Land 42,727    
Buildings and Equipment 76,191    
Total 118,918    
Accumulated Depreciation $ (14,541)    
10350 NW 112th Avenue, Miami, FL      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 4,798    
Buildings and Equipment 2,757    
Costs Capitalized Subsequent to Acquisition 2,413    
Cost amount carried at Close of Period      
Land 4,798    
Buildings and Equipment 5,170    
Total 9,968    
Accumulated Depreciation $ (1,016)    
7850 Southwest 6th Court, Plantation, FL      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 4,800    
Buildings and Equipment 30,592    
Costs Capitalized Subsequent to Acquisition 16,817    
Cost amount carried at Close of Period      
Land 4,800    
Buildings and Equipment 47,409    
Total 52,209    
Accumulated Depreciation $ (11,433)    
8900 Grand Oak Circle, Tampa, FL      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 1,100    
Buildings and Equipment 11,773    
Costs Capitalized Subsequent to Acquisition 1,788    
Cost amount carried at Close of Period      
Land 1,100    
Buildings and Equipment 13,561    
Total 14,661    
Accumulated Depreciation $ (4,649)    
180 Ted Turner Drive SW, Atlanta, GA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 5,717    
Buildings and Equipment 20,017    
Costs Capitalized Subsequent to Acquisition 3,061    
Cost amount carried at Close of Period      
Land 5,717    
Buildings and Equipment 23,078    
Total 28,795    
Accumulated Depreciation $ (6,623)    
1224 Hammond Drive, Atlanta GA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 13,040    
Buildings and Equipment 135,459    
Costs Capitalized Subsequent to Acquisition 11,678    
Cost amount carried at Close of Period      
Land 13,040    
Buildings and Equipment 147,137    
Total 160,177    
Accumulated Depreciation $ (15,612)    
One Georgia Center, Atlanta, GA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 10,250    
Buildings and Equipment 27,933    
Costs Capitalized Subsequent to Acquisition 22,005    
Cost amount carried at Close of Period      
Land 10,250    
Buildings and Equipment 49,938    
Total 60,188    
Accumulated Depreciation $ (15,962)    
One Primerica Parkway, Duluth, GA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Encumbrances $ 26,156    
Initial Cost to Company      
Land 6,927    
Buildings and Equipment 22,951    
Costs Capitalized Subsequent to Acquisition 2,268    
Cost amount carried at Close of Period      
Land 6,927    
Buildings and Equipment 25,219    
Total 32,146    
Accumulated Depreciation $ (3,817)    
4712 Southpark Boulevard, Ellenwood, GA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 1,390    
Buildings and Equipment 19,635    
Costs Capitalized Subsequent to Acquisition 1,327    
Cost amount carried at Close of Period      
Land 1,390    
Buildings and Equipment 20,962    
Total 22,352    
Accumulated Depreciation $ (6,311)    
8305 NW 62nd Avenue, Johnston, IA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 2,649    
Buildings and Equipment 7,997    
Costs Capitalized Subsequent to Acquisition 0    
Cost amount carried at Close of Period      
Land 2,649    
Buildings and Equipment 7,997    
Total 10,646    
Accumulated Depreciation $ (1,330)    
1185, 1249 & 1387 S. Vinnell Way, Boise, ID      
Real estate and accumulated depreciation      
Number of Properties | property 3    
Initial Cost to Company      
Land $ 3,390    
Buildings and Equipment 29,026    
Costs Capitalized Subsequent to Acquisition 1,520    
Cost amount carried at Close of Period      
Land 3,390    
Buildings and Equipment 30,546    
Total 33,936    
Accumulated Depreciation $ (9,503)    
2020 S. Arlington Heights, Arlington Heights, IL      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 1,450    
Buildings and Equipment 13,588    
Costs Capitalized Subsequent to Acquisition 2,156    
Cost amount carried at Close of Period      
Land 1,450    
Buildings and Equipment 15,744    
Total 17,194    
Accumulated Depreciation $ (5,633)    
1000 W. Fulton, Chicago, IL      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 42,935    
Buildings and Equipment 252,914    
Costs Capitalized Subsequent to Acquisition 1,035    
Cost amount carried at Close of Period      
Land 42,935    
Buildings and Equipment 253,949    
Total 296,884    
Accumulated Depreciation $ (29,784)    
HUB 1415, Naperville IL      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 12,333    
Buildings and Equipment 20,586    
Costs Capitalized Subsequent to Acquisition 26,551    
Cost amount carried at Close of Period      
Land 12,333    
Buildings and Equipment 47,137    
Total 59,470    
Accumulated Depreciation $ (10,286)    
7601 and 7635 Interactive Way, Indianapolis, IN      
Real estate and accumulated depreciation      
Number of Properties | property 2    
Initial Cost to Company      
Land $ 3,337    
Buildings and Equipment 14,522    
Costs Capitalized Subsequent to Acquisition 34    
Cost amount carried at Close of Period      
Land 3,337    
Buildings and Equipment 14,556    
Total 17,893    
Accumulated Depreciation $ (2,281)    
251 Causeway Street, Boston, MA      
Real estate and accumulated depreciation      
Number of Properties | property 3    
Initial Cost to Company      
Land $ 26,851    
Buildings and Equipment 36,756    
Costs Capitalized Subsequent to Acquisition 6,426    
Cost amount carried at Close of Period      
Land 26,848    
Buildings and Equipment 43,185    
Total 70,033    
Accumulated Depreciation $ (10,631)    
330 Billerica road, Chelmsford, MA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 2,477    
Buildings and Equipment 0    
Costs Capitalized Subsequent to Acquisition 10,246    
Cost amount carried at Close of Period      
Land 2,477    
Buildings and Equipment 10,246    
Total 12,723    
Accumulated Depreciation $ (2,743)    
25 Newport Avenue, Quincy, MA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 2,700    
Buildings and Equipment 9,199    
Costs Capitalized Subsequent to Acquisition 2,963    
Cost amount carried at Close of Period      
Land 2,700    
Buildings and Equipment 12,162    
Total 14,862    
Accumulated Depreciation $ (4,054)    
2009-2011 Commerce Park Drive, Annapolis, MD      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 1,580    
Buildings and Equipment 3,825    
Costs Capitalized Subsequent to Acquisition 4,097    
Cost amount carried at Close of Period      
Land 1,581    
Buildings and Equipment 7,921    
Total 9,502    
Accumulated Depreciation $ (1,689)    
2001-2003 Commerce Park Drive, Annapolis, MD      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 2,477    
Buildings and Equipment 3,840    
Costs Capitalized Subsequent to Acquisition 1,204    
Cost amount carried at Close of Period      
Land 2,476    
Buildings and Equipment 5,045    
Total 7,521    
Accumulated Depreciation $ (1,138)    
4201 Patterson Avenue, Baltimore, MD      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 901    
Buildings and Equipment 8,097    
Costs Capitalized Subsequent to Acquisition 4,746    
Impairment/ Writedowns (85)    
Cost amount carried at Close of Period      
Land 893    
Buildings and Equipment 12,766    
Total 13,659    
Accumulated Depreciation $ (7,833)    
7001 Columbia Gateway Drive, Columbia, MD      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 5,642    
Buildings and Equipment 10,352    
Costs Capitalized Subsequent to Acquisition 4,209    
Cost amount carried at Close of Period      
Land 5,642    
Buildings and Equipment 14,561    
Total 20,203    
Accumulated Depreciation $ (2,254)    
6310 Hillside Center, Columbia, MD      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 1,424    
Buildings and Equipment 2,084    
Costs Capitalized Subsequent to Acquisition 440    
Cost amount carried at Close of Period      
Land 1,424    
Buildings and Equipment 2,524    
Total 3,948    
Accumulated Depreciation $ (631)    
6315 Hillside Center, Columbia, MD      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 2,013    
Buildings and Equipment 2,144    
Costs Capitalized Subsequent to Acquisition 575    
Cost amount carried at Close of Period      
Land 2,013    
Buildings and Equipment 2,719    
Total 4,732    
Accumulated Depreciation $ (712)    
TenThreeTwenty, Columbia, MD      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 3,126    
Buildings and Equipment 16,361    
Costs Capitalized Subsequent to Acquisition 4,798    
Cost amount carried at Close of Period      
Land 3,126    
Buildings and Equipment 21,159    
Total 24,285    
Accumulated Depreciation $ (4,279)    
3300 75th Avenue, Landover, MD      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Encumbrances $ 29,634    
Initial Cost to Company      
Land 4,110    
Buildings and Equipment 36,371    
Costs Capitalized Subsequent to Acquisition 3,746    
Cost amount carried at Close of Period      
Land 4,110    
Buildings and Equipment 40,117    
Total 44,227    
Accumulated Depreciation $ (14,846)    
Redland 520/530, Rockville, MD      
Real estate and accumulated depreciation      
Number of Properties | property 3    
Initial Cost to Company      
Land $ 12,714    
Buildings and Equipment 61,377    
Costs Capitalized Subsequent to Acquisition 8,166    
Cost amount carried at Close of Period      
Land 12,714    
Buildings and Equipment 69,543    
Total 82,257    
Accumulated Depreciation $ (12,618)    
Redland 540, Rockville, MD      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 10,740    
Buildings and Equipment 17,714    
Costs Capitalized Subsequent to Acquisition 4,605    
Cost amount carried at Close of Period      
Land 10,740    
Buildings and Equipment 22,319    
Total 33,059    
Accumulated Depreciation $ (5,698)    
3550 Green Court, Ann Arbor, MI      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 3,630    
Buildings and Equipment 4,857    
Costs Capitalized Subsequent to Acquisition 0    
Cost amount carried at Close of Period      
Land 3,630    
Buildings and Equipment 4,857    
Total 8,487    
Accumulated Depreciation $ (857)    
Rosedale Corporate Plaza, Roseville, MN      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 672    
Buildings and Equipment 6,045    
Costs Capitalized Subsequent to Acquisition 2,896    
Cost amount carried at Close of Period      
Land 672    
Buildings and Equipment 8,941    
Total 9,613    
Accumulated Depreciation $ (4,107)    
2555 Grand Boulevard, Kansas City, MO      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 4,209    
Buildings and Equipment 51,522    
Costs Capitalized Subsequent to Acquisition 5,642    
Cost amount carried at Close of Period      
Land 4,209    
Buildings and Equipment 57,164    
Total 61,373    
Accumulated Depreciation $ (10,135)    
4241 NE 34th Street, Kansas City, MO      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 1,133    
Buildings and Equipment 5,649    
Costs Capitalized Subsequent to Acquisition 5,284    
Cost amount carried at Close of Period      
Land 1,470    
Buildings and Equipment 10,596    
Total 12,066    
Accumulated Depreciation $ (5,834)    
1220 Echelon Parkway, Jackson, MS      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Encumbrances $ 14,528    
Initial Cost to Company      
Land 440    
Buildings and Equipment 25,458    
Costs Capitalized Subsequent to Acquisition 2,239    
Cost amount carried at Close of Period      
Land 440    
Buildings and Equipment 27,697    
Total 28,137    
Accumulated Depreciation $ (8,217)    
2300 and 2400 Yorkmont Road, Charlotte, NC      
Real estate and accumulated depreciation      
Number of Properties | property 2    
Initial Cost to Company      
Land $ 1,334    
Buildings and Equipment 19,075    
Costs Capitalized Subsequent to Acquisition 4,444    
Cost amount carried at Close of Period      
Land 1,334    
Buildings and Equipment 23,519    
Total 24,853    
Accumulated Depreciation $ (4,475)    
18010 Burt Street, Omaha, NE      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 2,819    
Buildings and Equipment 6,250    
Costs Capitalized Subsequent to Acquisition 4,710    
Cost amount carried at Close of Period      
Land 2,819    
Buildings and Equipment 10,960    
Total 13,779    
Accumulated Depreciation $ (982)    
18020 Burt Street, Omaha, NE      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 4,158    
Buildings and Equipment 6,250    
Costs Capitalized Subsequent to Acquisition 13    
Cost amount carried at Close of Period      
Land 4,158    
Buildings and Equipment 6,263    
Total 10,421    
Accumulated Depreciation $ (1,039)    
500 Charles Ewing Boulevard, Ewing, NJ      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Encumbrances $ 42,354    
Initial Cost to Company      
Land 4,808    
Buildings and Equipment 26,002    
Costs Capitalized Subsequent to Acquisition 1,846    
Cost amount carried at Close of Period      
Land 4,808    
Buildings and Equipment 27,848    
Total 32,656    
Accumulated Depreciation $ (4,620)    
299 Jefferson Road, Parsippany, NJ      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 4,543    
Buildings and Equipment 2,914    
Costs Capitalized Subsequent to Acquisition 1,649    
Cost amount carried at Close of Period      
Land 4,543    
Buildings and Equipment 4,563    
Total 9,106    
Accumulated Depreciation $ (893)    
One Jefferson Road, Parsippany, NJ      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 4,415    
Buildings and Equipment 5,249    
Costs Capitalized Subsequent to Acquisition 103    
Cost amount carried at Close of Period      
Land 4,415    
Buildings and Equipment 5,352    
Total 9,767    
Accumulated Depreciation $ (898)    
Airline Corporate Center, Colonie, NY      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 790    
Buildings and Equipment 6,400    
Costs Capitalized Subsequent to Acquisition 1,968    
Cost amount carried at Close of Period      
Land 790    
Buildings and Equipment 8,368    
Total 9,158    
Accumulated Depreciation $ (2,612)    
1212 Pittsford - Victor Road, Pittsford, NY      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 608    
Buildings and Equipment 78    
Costs Capitalized Subsequent to Acquisition 1,706    
Cost amount carried at Close of Period      
Land 608    
Buildings and Equipment 1,784    
Total 2,392    
Accumulated Depreciation $ (355)    
2231 Schrock Road, Columbus, OH      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 716    
Buildings and Equipment 217    
Costs Capitalized Subsequent to Acquisition 578    
Cost amount carried at Close of Period      
Land 716    
Buildings and Equipment 795    
Total 1,511    
Accumulated Depreciation $ (229)    
8800 Tinicum Boulevard, Philadelphia, PA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 5,573    
Buildings and Equipment 22,686    
Costs Capitalized Subsequent to Acquisition 6,883    
Cost amount carried at Close of Period      
Land 5,573    
Buildings and Equipment 29,569    
Total 35,142    
Accumulated Depreciation $ (4,577)    
446 Wrenplace Road, Fort Mill, SC      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 5,031    
Buildings and Equipment 22,524    
Costs Capitalized Subsequent to Acquisition 42    
Cost amount carried at Close of Period      
Land 5,031    
Buildings and Equipment 22,566    
Total 27,597    
Accumulated Depreciation $ (2,270)    
9680 Old Bailes Road, Fort Mill, SC      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 834    
Buildings and Equipment 2,944    
Costs Capitalized Subsequent to Acquisition 91    
Cost amount carried at Close of Period      
Land 834    
Buildings and Equipment 3,035    
Total 3,869    
Accumulated Depreciation $ (519)    
16001 North Dallas Parkway, Addison, TX      
Real estate and accumulated depreciation      
Number of Properties | property 2    
Initial Cost to Company      
Land $ 10,282    
Buildings and Equipment 63,071    
Costs Capitalized Subsequent to Acquisition 2,910    
Cost amount carried at Close of Period      
Land 10,282    
Buildings and Equipment 65,981    
Total 76,263    
Accumulated Depreciation $ (11,484)    
Research Park, Austin, TX      
Real estate and accumulated depreciation      
Number of Properties | property 2    
Initial Cost to Company      
Land $ 4,258    
Buildings and Equipment 13,747    
Costs Capitalized Subsequent to Acquisition 2,298    
Cost amount carried at Close of Period      
Land 4,258    
Buildings and Equipment 16,045    
Total 20,303    
Accumulated Depreciation $ (4,155)    
10451 Clay Road, Houston, TX      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 5,495    
Buildings and Equipment 10,253    
Costs Capitalized Subsequent to Acquisition 2,432    
Cost amount carried at Close of Period      
Land 5,495    
Buildings and Equipment 12,685    
Total 18,180    
Accumulated Depreciation $ (2,486)    
202 North Castlegory Road, Houston, TX      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 863    
Buildings and Equipment 5,024    
Costs Capitalized Subsequent to Acquisition 98    
Cost amount carried at Close of Period      
Land 863    
Buildings and Equipment 5,122    
Total 5,985    
Accumulated Depreciation $ (796)    
4221 W. John Carpenter Freeway, Irving, TX      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 1,413    
Buildings and Equipment 2,365    
Costs Capitalized Subsequent to Acquisition 1,843    
Cost amount carried at Close of Period      
Land 1,413    
Buildings and Equipment 4,208    
Total 5,621    
Accumulated Depreciation $ (1,799)    
8675, 8701-8711 Freeport Pkwy and 8901 Esters Boulevard, Irving, TX      
Real estate and accumulated depreciation      
Number of Properties | property 3    
Initial Cost to Company      
Land $ 12,970    
Buildings and Equipment 31,566    
Costs Capitalized Subsequent to Acquisition 757    
Cost amount carried at Close of Period      
Land 12,970    
Buildings and Equipment 32,323    
Total 45,293    
Accumulated Depreciation $ (5,250)    
1511 East Common Street, New Braunfels, TX      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 4,965    
Buildings and Equipment 1,266    
Costs Capitalized Subsequent to Acquisition 251    
Cost amount carried at Close of Period      
Land 4,965    
Buildings and Equipment 1,517    
Total 6,482    
Accumulated Depreciation $ (424)    
2900 West Plano Parkway, Plano, TX      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 6,819    
Buildings and Equipment 8,831    
Costs Capitalized Subsequent to Acquisition 0    
Cost amount carried at Close of Period      
Land 6,819    
Buildings and Equipment 8,831    
Total 15,650    
Accumulated Depreciation $ (1,469)    
3400 West Plano Parkway, Plano, TX      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 4,543    
Buildings and Equipment 15,964    
Costs Capitalized Subsequent to Acquisition 321    
Cost amount carried at Close of Period      
Land 4,543    
Buildings and Equipment 16,285    
Total 20,828    
Accumulated Depreciation $ (2,745)    
3600 Weismann Boulevard, San Antonio, TX      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 3,493    
Buildings and Equipment 6,662    
Costs Capitalized Subsequent to Acquisition 2,389    
Cost amount carried at Close of Period      
Land 3,493    
Buildings and Equipment 9,051    
Total 12,544    
Accumulated Depreciation $ (1,487)    
701 Clay Road, Waco, TX      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Encumbrances $ 26,156    
Initial Cost to Company      
Land 2,030    
Buildings and Equipment 8,708    
Costs Capitalized Subsequent to Acquisition 15,052    
Cost amount carried at Close of Period      
Land 2,060    
Buildings and Equipment 23,730    
Total 25,790    
Accumulated Depreciation $ (11,137)    
1800 Novell Place, Provo, UT      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 7,487    
Buildings and Equipment 43,487    
Costs Capitalized Subsequent to Acquisition 19,841    
Cost amount carried at Close of Period      
Land 7,487    
Buildings and Equipment 63,328    
Total 70,815    
Accumulated Depreciation $ (9,528)    
14660 Lee Road, Chantilly, VA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 2,536    
Buildings and Equipment 14,686    
Costs Capitalized Subsequent to Acquisition 3,260    
Cost amount carried at Close of Period      
Land 2,536    
Buildings and Equipment 17,946    
Total 20,482    
Accumulated Depreciation $ (3,295)    
14672 Lee Road, Chantilly, VA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 2,253    
Buildings and Equipment 24,749    
Costs Capitalized Subsequent to Acquisition 4,800    
Cost amount carried at Close of Period      
Land 2,253    
Buildings and Equipment 29,549    
Total 31,802    
Accumulated Depreciation $ (7,435)    
14668 Lee Road, Chantilly, VA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 2,177    
Buildings and Equipment 34,779    
Costs Capitalized Subsequent to Acquisition 18,526    
Cost amount carried at Close of Period      
Land 2,177    
Buildings and Equipment 53,305    
Total 55,482    
Accumulated Depreciation $ (7,933)    
Enterchange At Meadowville, Chester, VA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 1,478    
Buildings and Equipment 9,594    
Costs Capitalized Subsequent to Acquisition 1,369    
Cost amount carried at Close of Period      
Land 1,478    
Buildings and Equipment 10,963    
Total 12,441    
Accumulated Depreciation $ (3,072)    
7987 Ashton Avenue, Manassas, VA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 1,562    
Buildings and Equipment 8,253    
Costs Capitalized Subsequent to Acquisition 1,093    
Cost amount carried at Close of Period      
Land 1,562    
Buildings and Equipment 9,346    
Total 10,908    
Accumulated Depreciation $ (2,265)    
Two Commercial Place, Norfolk, VA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 4,494    
Buildings and Equipment 21,508    
Costs Capitalized Subsequent to Acquisition 1,096    
Cost amount carried at Close of Period      
Land 4,494    
Buildings and Equipment 22,604    
Total 27,098    
Accumulated Depreciation $ (3,628)    
1760 Business Center Drive, Reston, VA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 5,033    
Buildings and Equipment 50,141    
Costs Capitalized Subsequent to Acquisition 6,325    
Cost amount carried at Close of Period      
Land 5,033    
Buildings and Equipment 56,466    
Total 61,499    
Accumulated Depreciation $ (15,184)    
1775 Wiehle Avenue, Reston, VA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 4,138    
Buildings and Equipment 26,120    
Costs Capitalized Subsequent to Acquisition 5,934    
Cost amount carried at Close of Period      
Land 4,138    
Buildings and Equipment 32,054    
Total 36,192    
Accumulated Depreciation $ (6,747)    
9201 Forest Hill Avenue, Richmond, VA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 1,344    
Buildings and Equipment 375    
Costs Capitalized Subsequent to Acquisition 668    
Cost amount carried at Close of Period      
Land 1,344    
Buildings and Equipment 1,043    
Total 2,387    
Accumulated Depreciation $ (322)    
9960 Mayland Drive, Richmond, VA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 2,614    
Buildings and Equipment 15,930    
Costs Capitalized Subsequent to Acquisition 5,021    
Cost amount carried at Close of Period      
Land 2,614    
Buildings and Equipment 20,951    
Total 23,565    
Accumulated Depreciation $ (5,943)    
1751 Blue Hills Drive, Roanoke, VA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 2,689    
Buildings and Equipment 7,761    
Costs Capitalized Subsequent to Acquisition 0    
Cost amount carried at Close of Period      
Land 2,689    
Buildings and Equipment 7,761    
Total 10,450    
Accumulated Depreciation $ (1,291)    
Atlantic Corporate Park, Sterling, VA      
Real estate and accumulated depreciation      
Number of Properties | property 2    
Initial Cost to Company      
Land $ 5,752    
Buildings and Equipment 29,316    
Costs Capitalized Subsequent to Acquisition 4,423    
Cost amount carried at Close of Period      
Land 5,752    
Buildings and Equipment 33,739    
Total 39,491    
Accumulated Depreciation $ (6,660)    
Orbital Sciences Campus, Sterling, VA      
Real estate and accumulated depreciation      
Number of Properties | property 3    
Initial Cost to Company      
Land $ 12,275    
Buildings and Equipment 19,320    
Costs Capitalized Subsequent to Acquisition 37,466    
Cost amount carried at Close of Period      
Land 12,269    
Buildings and Equipment 56,792    
Total 69,061    
Accumulated Depreciation $ (4,480)    
Sterling Park Business Center, Sterling, VA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Encumbrances $ 26,007    
Initial Cost to Company      
Land 5,871    
Buildings and Equipment 44,324    
Costs Capitalized Subsequent to Acquisition 135    
Cost amount carried at Close of Period      
Land 5,871    
Buildings and Equipment 44,459    
Total 50,330    
Accumulated Depreciation $ (8,072)    
65 Bowdoin Street, S. Burlington, VT      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 700    
Buildings and Equipment 8,416    
Costs Capitalized Subsequent to Acquisition 239    
Cost amount carried at Close of Period      
Land 700    
Buildings and Equipment 8,655    
Total 9,355    
Accumulated Depreciation $ (3,179)    
Stevens Center, Richland, WA      
Real estate and accumulated depreciation      
Number of Properties | property 2    
Initial Cost to Company      
Land $ 3,970    
Buildings and Equipment 17,035    
Costs Capitalized Subsequent to Acquisition 4,807    
Cost amount carried at Close of Period      
Land 4,042    
Buildings and Equipment 21,770    
Total 25,812    
Accumulated Depreciation $ (13,792)    
Unison Elliott Bay-Lab Space, Seattle, WA      
Real estate and accumulated depreciation      
Number of Properties | property 2    
Initial Cost to Company      
Land $ 17,316    
Buildings and Equipment 34,281    
Costs Capitalized Subsequent to Acquisition 147,272    
Cost amount carried at Close of Period      
Land 17,316    
Buildings and Equipment 181,553    
Total 198,869    
Accumulated Depreciation $ (12,064)    
Unison Elliott Bay-Office Space, Seattle, WA      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 9,324    
Buildings and Equipment 18,459    
Costs Capitalized Subsequent to Acquisition 4,858    
Cost amount carried at Close of Period      
Land 9,324    
Buildings and Equipment 23,317    
Total 32,641    
Accumulated Depreciation $ (3,753)    
5353 Yellowstone Road, Cheyenne, WY      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 1,915    
Buildings and Equipment 8,217    
Costs Capitalized Subsequent to Acquisition 4,528    
Cost amount carried at Close of Period      
Land 1,950    
Buildings and Equipment 12,710    
Total 14,660    
Accumulated Depreciation $ (6,641)    
Properties Held for Sale      
Real estate and accumulated depreciation      
Number of Properties | property 5    
Encumbrances $ 0    
Initial Cost to Company      
Land 24,650    
Buildings and Equipment 35,095    
Costs Capitalized Subsequent to Acquisition 1,032    
Impairment/ Writedowns (19,042)    
Cost amount carried at Close of Period      
Land 17,331    
Buildings and Equipment 24,404    
Total 41,735    
Accumulated Depreciation $ (10,030)    
Properties Held for Sale | 3250 and 3260 Jay Street, Santa Clara, CA      
Real estate and accumulated depreciation      
Number of Properties | property 2    
Initial Cost to Company      
Land $ 19,899    
Buildings and Equipment 14,051    
Costs Capitalized Subsequent to Acquisition 83    
Impairment/ Writedowns (11,041)    
Cost amount carried at Close of Period      
Land 12,986    
Buildings and Equipment 10,006    
Total 22,992    
Accumulated Depreciation $ (2,244)    
Properties Held for Sale | 11411 E. Jefferson Avenue, Detroit, MI      
Real estate and accumulated depreciation      
Number of Properties | property 1    
Initial Cost to Company      
Land $ 630    
Buildings and Equipment 18,002    
Costs Capitalized Subsequent to Acquisition 596    
Impairment/ Writedowns (8,001)    
Cost amount carried at Close of Period      
Land 224    
Buildings and Equipment 11,003    
Total 11,227    
Accumulated Depreciation $ (6,807)    
Properties Held for Sale | Regents Center, Tempe, AZ      
Real estate and accumulated depreciation      
Number of Properties | property 2    
Initial Cost to Company      
Land $ 4,121    
Buildings and Equipment 3,042    
Costs Capitalized Subsequent to Acquisition 353    
Cost amount carried at Close of Period      
Land 4,121    
Buildings and Equipment 3,395    
Total 7,516    
Accumulated Depreciation $ (979)    
Total Real Estate Assets      
Real estate and accumulated depreciation      
Number of Properties | property 128    
Encumbrances $ 172,913    
Initial Cost to Company      
Land 737,083    
Buildings and Equipment 2,177,264    
Costs Capitalized Subsequent to Acquisition 823,104    
Impairment/ Writedowns (38,157)    
Cost amount carried at Close of Period      
Land 728,370    
Buildings and Equipment 2,970,924    
Total 3,699,294    
Accumulated Depreciation $ (628,680)    
v3.25.0.1
SCHEDULE III REAL ESTATE AND ACCUMULATED DEPRECIATION - Additional Information (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2024
USD ($)
property
Feb. 29, 2024
property
Real estate and accumulated depreciation    
Mortgage debt, net $ 4,407  
Aggregate cost for federal income tax purposes $ 7,540,917  
Useful life of buildings and improvements 40 years  
Useful life of equipment 7 years  
Mortgage Note Payable    
Real estate and accumulated depreciation    
Number of properties used to secured mortgage note | property 7  
Line of Credit    
Real estate and accumulated depreciation    
Maximum borrowing capacity on revolving credit facility $ 425,000  
Line of Credit | Revolving credit facility    
Real estate and accumulated depreciation    
Number of properties used to secured mortgage note | property 19  
Maximum borrowing capacity on revolving credit facility $ 325,000  
Line of Credit | Secured Debt    
Real estate and accumulated depreciation    
Number of properties used to secured mortgage note | property 19  
Secured Debt    
Real estate and accumulated depreciation    
Principal balance $ 100,000  
Mortgage note payable, 7.671% interest rate, due in 2028 | Mortgage Note Payable    
Real estate and accumulated depreciation    
Number of properties used to secured mortgage note | property 2  
Principal balance $ 54,300  
Interest rate (as a percent) 7.671%  
Senior secured notes, 9.000% interest rate, due in September 2029    
Real estate and accumulated depreciation    
Interest rate (as a percent) 9.00%  
Senior secured notes, 9.000% interest rate, due in September 2029 | Senior Notes    
Real estate and accumulated depreciation    
Number of properties used to secured mortgage note | property 19  
Principal balance $ 610,000  
Interest rate (as a percent) 9.00%  
Senior secured notes, 9.000% interest rate, due in March 2029    
Real estate and accumulated depreciation    
Interest rate (as a percent) 9.00%  
Senior secured notes, 9.000% interest rate, due in March 2029 | Senior Notes    
Real estate and accumulated depreciation    
Number of properties used to secured mortgage note | property 17 17
Principal balance $ 300,000  
Interest rate (as a percent) 9.00% 9.00%
Senior secured notes, 3.250% interest rate, due in 2027    
Real estate and accumulated depreciation    
Interest rate (as a percent) 3.25%  
Senior secured notes, 3.250% interest rate, due in 2027 | Senior Notes    
Real estate and accumulated depreciation    
Number of properties used to secured mortgage note | property 37  
Principal balance $ 445,000  
Interest rate (as a percent) 3.25%  
v3.25.0.1
SCHEDULE III REAL ESTATE AND ACCUMULATED DEPRECIATION - Carrying Amount and Accumulated Depreciation (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Real Estate Properties    
Balance at the beginning of the period $ 4,065,679 $ 3,936,074
Additions 107,912 221,246
Loss on asset impairment (181,578) (11,299)
Disposals (283,534) (51,011)
Cost basis adjustment (9,185)  
Reclassification of assets of properties held for sale (41,735) (29,331)
Balance at the end of the period 3,657,559 4,065,679
Accumulated Depreciation    
Balance at the beginning of the period 650,179 561,458
Additions 118,710 107,460
Loss on asset impairment 0 0
Disposals (131,024) (15,709)
Cost basis adjustment (9,185)  
Reclassification of assets of properties held for sale (10,030) (3,030)
Balance at the end of the period $ 618,650 $ 650,179