COLUMBIA BANKING SYSTEM, INC., 10-Q filed on 11/9/2016
Quarterly Report
v3.5.0.2
Document and Entity Information - shares
 9 Months Ended
Sep. 30, 2016
Oct. 31, 2016
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2016  
Document Fiscal Year Focus 2016  
Document Fiscal Period Focus Q3  
Entity Registrant Name COLUMBIA BANKING SYSTEM INC  
Entity Central Index Key 0000887343  
Current Fiscal Year End Date --12-31  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   58,042,207
v3.5.0.2
Consolidated Balance Sheets - USD ($)
shares in Thousands, $ in Thousands
Sep. 30, 2016
Dec. 31, 2015
ASSETS    
Cash and due from banks $ 180,839 $ 166,929
Interest-earning deposits with banks 11,225 8,373
Total cash and cash equivalents 192,064 175,302
Securities available for sale at fair value (amortized cost of $2,324,721 and $2,157,610, respectively) 2,360,084 2,157,694
Federal Home Loan Bank stock at cost 12,640 12,722
Loans held for sale 3,361 4,509
Loans, net of unearned income of ($36,236) and ($42,373), respectively 6,259,757 5,815,027
Less: allowance for loan and lease losses 70,264 68,172
Loans, net 6,189,493 5,746,855
FDIC loss-sharing asset 3,592 6,568
Interest receivable 31,606 27,877
Premises and equipment, net 152,908 164,239
Other real estate owned 8,994 13,738
Goodwill 382,762 382,762
Other intangible assets, net 19,051 23,577
Other assets 230,199 235,854
Total assets 9,586,754 8,951,697
LIABILITIES AND SHAREHOLDERS' EQUITY    
Noninterest-bearing 3,942,434 3,507,358
Interest-bearing 4,115,382 3,931,471
Total deposits 8,057,816 7,438,829
Federal Home Loan Bank advances 66,502 68,531
Securities sold under agreements to repurchase 69,189 99,699
Other liabilities 116,512 102,510
Total liabilities 8,310,019 7,709,569
Commitments and contingent liabilities (Note 10)
Shareholders' equity:    
Preferred Stock, Shares Authorized 2,000 2,000
Preferred Stock, Shares Issued 9 9
Preferred Stock, Value, Issued $ 2,217 $ 2,217
Authorized shares 115,000 115,000
Common Stock Shares Issued And Outstanding 58,043 57,724
Common Stock (no par value) $ 994,098 $ 990,281
Retained earnings 263,915 255,925
Accumulated other comprehensive income (loss) [1] 16,505 (6,295)
Total shareholders’ equity 1,276,735 1,242,128
Total liabilities and shareholders’ equity $ 9,586,754 $ 8,951,697
[1] All amounts are net of tax. Amounts in parenthesis indicate debits.
v3.5.0.2
Consolidated Balance Sheets (Parenthetical) - USD ($)
shares in Thousands, $ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Securities available-for-sale, amortized cost $ 2,324,721 $ 2,157,610
Less: unearned income on loans $ (36,236) $ (42,373)
Common stock, par value $ 0 $ 0
Authorized shares 115,000 115,000
Common stock, shares outstanding 58,043 57,724
v3.5.0.2
Consolidated Statements of Income - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Interest Income        
Loans $ 74,956 $ 72,242 $ 216,923 $ 214,808
Taxable securities 8,988 7,472 25,834 22,258
Tax-exempt securities 2,799 2,920 8,397 8,972
Deposits in banks 15 31 81 84
Total interest income 86,758 82,665 251,235 246,122
Interest Expense        
Deposits 823 756 2,352 2,244
Federal Home Loan Bank advances 229 78 594 391
Other borrowings 134 137 407 419
Total interest expense 1,186 971 3,353 3,054
Net Interest Income 85,572 81,694 247,882 243,068
Provision for loan and lease losses 1,866 2,831 10,760 6,242
Net interest income after provision for loan and lease losses 83,706 78,863 237,122 236,826
Noninterest Income        
Deposit account and treasury management fees (1) 7,222 7,230 [1] 21,304 21,441 [1]
Card revenue (1) 6,114 5,849 [1] 17,817 16,914 [1]
Financial services and trust revenue (1) 2,746 3,316 [1] 8,347 9,657 [1]
Loan revenue (1) 2,949 3,200 [1] 8,013 8,125 [1]
Merchant processing revenue 2,352 2,422 6,726 6,802
Bank owned life insurance 1,073 1,086 3,459 3,370
Investment securities gains, net 572 236 1,174 1,300
Change in FDIC loss-sharing asset (104) (1,635) (2,197) (2,979)
Other (1) 242 795 [1] 1,109 2,098 [1]
Total noninterest income 23,166 22,499 65,752 66,728
Noninterest Expense        
Compensation and employee benefits 38,476 35,175 112,086 112,721
Occupancy 8,219 8,101 26,044 24,781
Merchant processing expense 1,161 1,090 3,312 3,146
Advertising and promotion 1,993 1,354 3,878 3,480
Data processing 4,275 3,796 12,350 13,022
Legal and professional fees 2,264 2,173 5,366 7,527
Taxes, licenses and fees 1,491 1,344 4,079 4,003
Regulatory premiums 776 1,084 2,985 3,626
Net cost (benefit) of operation of other real estate owned (249) 240 (61) (1,569)
Amortization of intangibles 1,460 1,695 4,526 5,230
Other 7,398 8,015 21,563 23,305
Total noninterest expense 67,264 64,067 196,128 199,272
Income before income taxes 39,608 37,295 106,746 104,282
Income tax provision 12,124 11,515 32,598 32,195
Net Income $ 27,484 $ 25,780 $ 74,148 $ 72,087
Earnings per common share        
Basic ($ per share) $ 0.47 $ 0.45 $ 1.28 $ 1.25
Diluted ($ per share) 0.47 0.45 1.28 1.25
Dividends paid per common share $ 0.39 $ 0.34 $ 1.14 $ 0.98
Weighted average number of common shares outstanding 57,215 57,051 57,173 57,007
Weighted average number of diluted common shares outstanding 57,225 57,064 57,183 57,021
[1] Reclassified to conform to the current period’s presentation. Reclassifications consisted of disaggregating fee revenue previously presented in ‘Service charges and other fees’ and certain revenue previously presented in ‘Other’ into the presentation above. The Company made these reclassifications to provide additional information about its sources of noninterest income. There was no change to total noninterest income as previously reported as a result of these reclassifications.
v3.5.0.2
Consolidated Statements of Comprehensive Income - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Net income $ 27,484 $ 25,780 $ 74,148 $ 72,087
Unrealized gain from securities:        
Net unrealized holding loss from available for sale securities arising during the period (4,049) 10,126 23,229 8,161
Reclassification adjustment of net gain from sale of available for sale securities included in income (364) (151) (748) (829)
Net unrealized gain from securities, net of reclassification adjustment (4,413) 9,975 22,481 7,332
Pension plan liability adjustment:        
Unrecognized net actuarial gain (loss) during the period     0 (280)
Less: amortization of unrecognized net actuarial loss included in net periodic pension cost 107 62 319 153
Pension plan liability adjustment, net 107 62 319 (127)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [1] (4,306) 10,037 22,800 7,205
Total comprehensive income $ 23,178 $ 35,817 $ 96,948 $ 79,292
[1] All amounts are net of tax. Amounts in parenthesis indicate debits.
v3.5.0.2
Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Net unrealized holding gain (loss) from available for sale securities arising during the period, tax $ 2,305 $ (5,765) $ (13,225) $ (4,647)
Reclassification adjustment of net gain from sale of available for sale securities included in income, tax 208 85 426 471
Net unrealized loss from unfunded defined benefit plan liability arising during the period, tax 0 0 0 159
Less: amortization of unrecognized net actuarial loss included in net periodic pension cost, tax $ (60) $ (35) $ (182) $ (87)
v3.5.0.2
Consolidated Statements of Changes in Shareholders' Equity - USD ($)
$ in Thousands
Total
Common Stock [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income [Member]
Preferred Stock [Member]
Balance, value at Dec. 31, 2014 $ 1,228,175 $ 985,839 $ 234,498 $ 5,621 $ 2,217
Balance, shares at Dec. 31, 2014   57,437,000     9,000
Net income 72,087   72,087    
Other comprehensive income 7,205     7,205  
Issuance of common stock - stock option and other plans, value   $ 1,194      
Issuance of common stock - stock option and other plans, shares   46,000      
Issuance of common stock - restricted stock awards, net of cancelled awards, value   $ 2,934      
Issuance of common stock - restricted stock awards, net of cancelled awards, shares   277,000      
Stock Repurchased and Retired During Period, Value   $ (879)      
Stock Repurchased During Period, Shares   (31,000)      
Dividends, Preferred Stock, Cash     (100)    
Cash dividends paid on common stock (56,480)   (56,480)    
Balance, value at Sep. 30, 2015 1,254,136 $ 989,088 250,005 12,826 $ 2,217
Balance, shares at Sep. 30, 2015   57,729,000     9,000
Balance, value at Dec. 31, 2015 1,242,128 $ 990,281 255,925 (6,295) $ 2,217
Balance, shares at Dec. 31, 2015   57,724,000     9,000
Net income 74,148   74,148    
Other comprehensive income 22,800     22,800  
Issuance of common stock - stock option and other plans, value 1,304 $ 1,304      
Issuance of common stock - stock option and other plans, shares   47,000      
Issuance of common stock - restricted stock awards, net of cancelled awards, value 3,626 $ 3,626      
Issuance of common stock - restricted stock awards, net of cancelled awards, shares   310,000      
Stock Repurchased and Retired During Period, Value (1,113) $ (1,113)      
Stock Repurchased During Period, Shares   (38,000)      
Dividends, Preferred Stock, Cash (117)   117    
Cash dividends paid on common stock (66,041)   (66,041)    
Balance, value at Sep. 30, 2016 $ 1,276,735 $ 994,098 $ 263,915 $ 16,505 $ 2,217
Balance, shares at Sep. 30, 2016   58,043,000     8,782
v3.5.0.2
Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Cash Flows From Operating Activities    
Net income $ 74,148 $ 72,087
Adjustments to reconcile net income to net cash provided by operating activities    
Provision for loan and lease losses 10,760 6,242
Stock-based compensation expense 3,626 2,934
Depreciation, amortization and accretion 27,796 21,892
Investment securities gain, net 1,174 1,300
Net realized (gain) loss on sale of other assets 186 (241)
Net gain on sale and valuation adjustments of OREO (101) 1,798 [1]
Payments for Origination and Purchases of Loans Held-for-sale 76,645 57,249 [1]
Proceeds from Sale of Loans Held-for-sale 77,793 51,728 [1]
Net change in:    
Interest receivable (3,729) (2,684)
Interest payable (84) (136)
Other assets (7,714) (1,618)
Other liabilities 13,416 11,012
Net cash provided by operating activities 118,480 100,869
Cash Flows From Investing Activities    
Loans originated and acquired, net of principal collected (450,914) (314,768)
Purchases of securities available for sale (502,602) (218,734)
Purchases of premises and equipment (2,705) (7,351)
Payments to Acquire Federal Home Loan Bank Stock (57,799) (7,360)
Proceeds from FDIC for reimbursement on loss-sharing asset 878 4,195
Proceeds from sales of securities available for sale 120,800 82,776
Proceeds from principal repayments and maturities of securities available for sale 199,677 204,322
Proceeds from Sales of Assets, Investing Activities 7,391 14,132 [1]
Proceeds from Sale of Federal Home Loan Bank Stock 57,881 30,483 [1]
Proceeds from sales of other real estate and other personal property owned 5,845 13,254
Payments to FDIC related to loss-sharing asset (855) (1,472)
Net cash used in investing activities (622,403) (200,523)
Cash Flows From Financing Activities    
Net increase in deposits 619,162 390,083
Net decrease in sweep repurchase agreements (30,510) (31,898)
Proceeds from Federal Home Loan Bank advances 1,347,000 1,467,000
Federal Reserve Bank borrowings 10 1,010
Proceeds from exercise of stock options 1,304 1,194
Repayment of Federal Home Loan Bank advances (1,349,000) (1,677,000)
Repayment of Federal Reserve Bank borrowings 10 1,010
Payment of common stock dividends (66,041) (56,480)
Preferred stock dividends (117) (100)
Repayment of other borrowings 0 8,248
Purchase and retirement of common stock 1,113 879
Net cash provided by financing activities 520,685 83,672
Increase (decrease) in cash and cash equivalents 16,762 (15,982)
Cash and cash equivalents at beginning of period 175,302 188,170
Cash and cash equivalents at end of period 192,064 172,188
Supplemental Information:    
Cash paid for interest 3,437 3,190
Cash paid for income tax 20,825 19,054
Non-cash investing and financing activities    
Loans transferred to other real estate owned $ 1,202 $ 8,751
[1] Reclassified to conform to the current period’s presentation. There were no changes to cash flows from operating, investing, or financing activities as a result of these reclassifications.
v3.5.0.2
Basis of Presentation and Significant Accounting Policies
 9 Months Ended
Sep. 30, 2016
Basis of Presentation And Significant Accounting Policies  
Basis of Presentation and Significant Accounting Policies
Basis of Presentation and Significant Accounting Policies
Basis of Presentation
The interim unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information and with instructions to Form 10-Q and Article 10 of Regulation S-X. The consolidated financial statements include the accounts of Columbia Banking System, Inc. (“we”, “our”, “Columbia” or the “Company”) and its subsidiaries, including its wholly owned banking subsidiary Columbia State Bank (“Columbia Bank” or the “Bank”) and Columbia Trust Company (“Columbia Trust”). All intercompany transactions and accounts have been eliminated in consolidation. In the opinion of management, all adjustments (consisting only of normal recurring adjustments) considered necessary for a fair statement of the results for the interim periods presented have been included. The results of operations for the nine months ended September 30, 2016 are not necessarily indicative of results to be anticipated for the year ending December 31, 2016. The accompanying interim unaudited consolidated financial statements should be read in conjunction with the financial statements and related notes contained in the Company’s 2015 Annual Report on Form 10-K.
Because of reclassifications, changes occurred in the manner in which certain comparative period noninterest income items were presented in the unaudited consolidated statements of income. Specifically, fee revenue previously presented as ‘Service charges and other fees’ and certain fee revenue previously presented as ‘Other’ were reclassified to conform to the current period presentation. The Company made these presentation changes to provide additional information about its sources of noninterest income. There was no change to total noninterest income as previously reported as a result of these reclassifications.
Significant Accounting Policies
The significant accounting policies used in preparation of our consolidated financial statements are disclosed in our 2015 Annual Report on Form 10-K. There have not been any changes in our significant accounting policies compared to those contained in our 2015 Form 10-K disclosure for the year ended December 31, 2015.
v3.5.0.2
Accounting Pronouncements Recently Issued
 9 Months Ended
Sep. 30, 2016
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]  
Accounting Pronouncements Recently Issued
Accounting Pronouncements Recently Issued
In August 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-15, Classification of Certain Cash Receipts and Cash Payments. The amendments in this ASU provide specific guidance on several statement of cash flow classification issues to reduce diversity in practice. The amendments in ASU 2016-15 are effective for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years. Early adoption is permitted. The Company is assessing the impact that this guidance will have on its consolidated financial statements.
In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments. The amendments included in this ASU require an entity to reflect its current estimate of all expected credit losses for assets held at an amortized cost basis. For available for sale debt securities, credit losses should be measured in a manner similar to current GAAP, however, this ASU will require that credit losses be presented as an allowance rather than as a write-down. The amendments in ASU 2016-13 are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years, and are required to be adopted through a modified retrospective approach, with a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the ASU is effective. The Company is assessing the impact that this guidance will have on its consolidated financial statements.
In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting. The amendments included in this ASU simplify several aspects of the accounting for employee share-based payment transactions including the accounting for income taxes, forfeitures, and statutory tax withholding requirements, as well as classification in the statement of cash flows. The amendments in ASU 2016-09 are effective for the first interim or annual period beginning after December 15, 2016. Early adoption is permitted. The Company is assessing the impact that this guidance will have on its consolidated financial statements but does not expect the impact to be material.
In February 2016, the FASB issued ASU 2016-02, Leases. The amendments included in this ASU create a new accounting model for both lessees and lessors. The new guidance requires lessees to recognize lease liabilities and corresponding right-of-use assets for all leases with lease terms greater than 12 months. The amendments in ASU 2016-02 must be adopted using the modified retrospective approach and will be effective for the first interim or annual period beginning after December 15, 2018. Early adoption is permitted. The Company is assessing the impact that this guidance will have on its consolidated financial statements.
In January 2016, the FASB issued ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities. The amendments in ASU 2016-01 require all equity investments to be measured at fair value with changes in the fair value recognized through net income. The amendments in ASU 2016-01 also require an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. In addition, the amendments in this update eliminate the requirement to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet for public business entities. The amendments in ASU 2016-01 are effective for the first interim or annual period beginning after December 15, 2017. The Company is assessing the impact that this guidance will have on its consolidated financial statements but does not expect the impact to be material.
In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers. The guidance in this update will replace most existing revenue recognition guidance in GAAP when it becomes effective. For public companies, this update was to be effective for interim and annual periods beginning after December 15, 2016. However, in August 2015, the FASB issued ASU 2015-14, which delayed the effective date of ASU 2014-09 by one year and permits companies to voluntarily adopt the new standard as of the original effective date. In March, April and May 2016, the FASB issued ASU 2016-08, ASU 2016-10 and ASU 2016-12, respectively, to provide implementation guidance and practical expedients related to ASU 2014-09. The Company is assessing the impact that this guidance will have on its consolidated financial statements but does not expect the impact to be material.
v3.5.0.2
Securities
 9 Months Ended
Sep. 30, 2016
Available-for-sale Securities [Abstract]  
Securities
Securities
The following table summarizes the amortized cost, gross unrealized gains and losses and the resulting fair value of securities available for sale:
 
 
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Fair Value
 
 
(in thousands)
September 30, 2016
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations
 
$
1,498,158

 
$
17,148

 
$
(2,382
)
 
$
1,512,924

State and municipal securities
 
487,308

 
16,192

 
(382
)
 
503,118

U.S. government agency and government-sponsored enterprise securities
 
333,423

 
5,009

 
(140
)
 
338,292

U.S. government securities
 
548

 
—

 
—

 
548

Other securities
 
5,284

 
64

 
(146
)
 
5,202

Total
 
$
2,324,721

 
$
38,413

 
$
(3,050
)
 
$
2,360,084

December 31, 2015
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations
 
$
1,296,955

 
$
4,525

 
$
(14,991
)
 
$
1,286,489

State and municipal securities
 
480,417

 
12,690

 
(938
)
 
492,169

U.S. government agency and government-sponsored enterprise securities
 
354,515

 
1,113

 
(1,846
)
 
353,782

U.S. government securities
 
20,439

 
—

 
(302
)
 
20,137

Other securities
 
5,284

 
24

 
(191
)
 
5,117

Total
 
$
2,157,610

 
$
18,352

 
$
(18,268
)
 
$
2,157,694


Proceeds from sales of securities available for sale were $37.4 million and $10.6 million for the three months ended September 30, 2016 and 2015, respectively, and were $120.8 million and $82.8 million for the nine months ended September 30, 2016 and September 30, 2015, respectively. The following table provides the gross realized gains and losses on the sales of securities for the periods indicated:
 
 
Three Months Ended
 
Nine Months Ended
 
 
September 30,
 
September 30,
 
 
2016
 
2015
 
2016
 
2015
 
 
(in thousands)
Gross realized gains
 
$
572

 
$
236

 
$
1,174

 
$
1,310

Gross realized losses
 
—

 
—

 
—

 
(10
)
Net realized gains
 
$
572

 
$
236

 
$
1,174

 
$
1,300


The scheduled contractual maturities of investment securities available for sale at September 30, 2016 are presented as follows:
 
 
September 30, 2016
 
 
Amortized Cost
 
Fair Value
 
 
(in thousands)
Due within one year
 
$
28,765

 
$
28,874

Due after one year through five years
 
484,206

 
493,479

Due after five years through ten years
 
688,715

 
703,388

Due after ten years
 
1,117,751

 
1,129,141

Other securities with no stated maturity
 
5,284

 
5,202

Total investment securities available-for-sale
 
$
2,324,721

 
$
2,360,084


The following table summarizes the carrying value of securities pledged as collateral to secure public deposits, borrowings and other purposes as permitted or required by law:
 
 
September 30, 2016
 
 
(in thousands)
Washington and Oregon State to secure public deposits
 
$
235,931

Federal Reserve Bank to secure borrowings
 
40,877

Other securities pledged
 
147,336

Total securities pledged as collateral
 
$
424,144


The following table shows the gross unrealized losses and fair value of the Company’s investments with unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at September 30, 2016 and December 31, 2015:
 
 
Less than 12 Months
 
12 Months or More
 
Total
 
 
Fair
Value
 
Unrealized
Losses
 
Fair
Value
 
Unrealized
Losses
 
Fair
Value
 
Unrealized
Losses
 
 
(in thousands)
September 30, 2016
 
 
 
 
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations
 
$
176,508

 
$
(548
)
 
$
163,859

 
$
(1,834
)
 
$
340,367

 
$
(2,382
)
State and municipal securities
 
35,915

 
(337
)
 
3,489

 
(45
)
 
39,404

 
(382
)
U.S. government agency and government-sponsored enterprise securities
 
22,115

 
(140
)
 
—

 
—

 
22,115

 
(140
)
Other securities
 
—

 
—

 
2,810

 
(146
)
 
2,810

 
(146
)
Total
 
$
234,538

 
$
(1,025
)
 
$
170,158

 
$
(2,025
)
 
$
404,696

 
$
(3,050
)
 
 
 
 
 
 
 
 
 
 
 
 
 
December 31, 2015
 
 
 
 
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations
 
$
664,509

 
$
(7,610
)
 
$
214,325

 
$
(7,381
)
 
$
878,834

 
$
(14,991
)
State and municipal securities
 
48,261

 
(358
)
 
31,383

 
(580
)
 
79,644

 
(938
)
U.S. government agency and government-sponsored enterprise securities
 
193,400

 
(1,128
)
 
40,034

 
(718
)
 
233,434

 
(1,846
)
U.S. government securities
 
10,343

 
(136
)
 
9,794

 
(166
)
 
20,137

 
(302
)
Other securities
 
2,300

 
(15
)
 
2,780

 
(176
)
 
5,080

 
(191
)
Total
 
$
918,813

 
$
(9,247
)
 
$
298,316

 
$
(9,021
)
 
$
1,217,129

 
$
(18,268
)

At September 30, 2016, there were 83 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations securities in an unrealized loss position, of which 46 were in a continuous loss position for 12 months or more. The decline in fair value is attributable to changes in interest rates relative to where these investments fall within the yield curve and their individual characteristics. Because the Company does not intend to sell these securities nor does the Company consider it more likely than not that it will be required to sell these securities before the recovery of amortized cost basis, which may be upon maturity, the Company does not consider these investments to be other-than-temporarily impaired at September 30, 2016.
At September 30, 2016, there were 35 state and municipal government securities in an unrealized loss position, of which five were in a continuous loss position for 12 months or more. The unrealized losses on state and municipal securities were caused by interest rate changes or widening of market spreads subsequent to the purchase of the individual securities. Management monitors published credit ratings of these securities for adverse changes. As of September 30, 2016, none of the rated obligations of state and local government entities held by the Company had a below investment grade credit rating. Because the credit quality of these securities are investment grade and the Company does not intend to sell these securities nor does the Company consider it more likely than not that it will be required to sell these securities before the recovery of amortized cost basis, which may be upon maturity, the Company does not consider these investments to be other-than-temporarily impaired at September 30, 2016.
At September 30, 2016, there were five U.S. government agency and government-sponsored enterprise securities in an unrealized loss position, of which none was in a continuous loss position for 12 months or more. The decline in fair value is attributable to changes in interest rates relative to where these investments fall within the yield curve and their individual characteristics. Because the Company does not currently intend to sell these securities nor does the Company consider it more likely than not that it will be required to sell these securities before the recovery of amortized cost basis, which may be upon maturity, the Company does not consider these investments to be other-than-temporarily impaired at September 30, 2016.
At September 30, 2016, there was one other security in an unrealized loss position, which was in a continuous unrealized loss position for 12 months or more. The decline in fair value is attributable to changes in interest rates and the additional risk premium investors are demanding for investment securities with these characteristics. The Company does not consider this investment to be other-than-temporarily impaired at September 30, 2016 as it has the intent and ability to hold the investment for sufficient time to allow for recovery in the market value.
v3.5.0.2
Loans
 9 Months Ended
Sep. 30, 2016
Loans Receivable, Net [Abstract]  
Loans
Loans
The Company’s loan portfolio includes originated and purchased loans. Originated loans and purchased loans for which there was no evidence of credit deterioration at their acquisition date and it was probable that we would be able to collect all contractually required payments are referred to collectively as loans, excluding purchased credit impaired loans. Purchased loans for which there was, at acquisition date, evidence of credit deterioration since their origination and it was probable that we would be unable to collect all contractually required payments are referred to as purchased credit impaired loans, or “PCI loans.”
The following is an analysis of the loan portfolio by segment (net of unearned income):
 
 
September 30, 2016
 
December 31, 2015
 
 
Loans, excluding PCI loans
 
PCI Loans
 
Total
 
Loans, excluding PCI loans
 
PCI Loans
 
Total
 
 
(in thousands)
Commercial business
 
$
2,630,017

 
$
22,558

 
$
2,652,575

 
$
2,362,575

 
$
34,848

 
$
2,397,423

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
168,511

 
19,378

 
187,889

 
176,295

 
23,938

 
200,233

Commercial and multifamily residential
 
2,686,783

 
92,617

 
2,779,400

 
2,491,736

 
99,389

 
2,591,125

Total real estate
 
2,855,294

 
111,995

 
2,967,289

 
2,668,031

 
123,327

 
2,791,358

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
130,163

 
867

 
131,030

 
135,874

 
2,278

 
138,152

Commercial and multifamily residential
 
202,014

 
1,583

 
203,597

 
167,413

 
1,630

 
169,043

Total real estate construction
 
332,177

 
2,450

 
334,627

 
303,287

 
3,908

 
307,195

Consumer
 
325,741

 
15,761

 
341,502

 
342,601

 
18,823

 
361,424

Less: Net unearned income
 
(36,236
)
 
—

 
(36,236
)
 
(42,373
)
 
—

 
(42,373
)
Total loans, net of unearned income
 
6,106,993

 
152,764

 
6,259,757

 
5,634,121

 
180,906

 
5,815,027

Less: Allowance for loan and lease losses
 
(58,762
)
 
(11,502
)
 
(70,264
)
 
(54,446
)
 
(13,726
)
 
(68,172
)
Total loans, net
 
$
6,048,231

 
$
141,262

 
$
6,189,493

 
$
5,579,675

 
$
167,180

 
$
5,746,855

Loans held for sale
 
$
3,361

 
$
—

 
$
3,361

 
$
4,509

 
$
—

 
$
4,509


At September 30, 2016 and December 31, 2015, the Company had no material foreign activities. Substantially all of the Company’s loans and unfunded commitments are geographically concentrated in its service areas within the states of Washington, Oregon and Idaho.
The Company has made loans to executive officers and directors of the Company and related interests. These loans are made on the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with unrelated persons and do not involve more than the normal risk of collectability. The aggregate dollar amount of these loans was $10.1 million at September 30, 2016 and $10.0 million at December 31, 2015. During the first nine months of 2016, there were $759 thousand in advances and $652 thousand in repayments.
At September 30, 2016 and December 31, 2015, $2.30 billion and $2.22 billion of commercial and residential real estate loans were pledged as collateral on Federal Home Loan Bank of Des Moines (“FHLB”) borrowings and additional borrowing capacity. The Company has also pledged $50.0 million and $50.1 million of commercial loans to the Federal Reserve Bank for additional borrowing capacity at September 30, 2016 and December 31, 2015, respectively.
The following is an analysis of nonaccrual loans as of September 30, 2016 and December 31, 2015:
 
 
September 30, 2016
 
December 31, 2015
 
 
Recorded
Investment
Nonaccrual
Loans
 
Unpaid Principal
Balance
Nonaccrual
Loans
 
Recorded
Investment
Nonaccrual
Loans
 
Unpaid Principal
Balance
Nonaccrual
Loans
 
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
Secured
 
$
9,466

 
$
19,689

 
$
9,395

 
$
15,688

Unsecured
 
36

 
216

 
42

 
256

Real estate:
 
 
 
 
 
 
 
 
One-to-four family residential
 
579

 
1,303

 
820

 
1,866

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
Commercial land
 
934

 
922

 
349

 
332

Income property
 
1,957

 
2,177

 
2,843

 
3,124

Owner occupied
 
4,161

 
6,842

 
6,321

 
8,943

Real estate construction:
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
Land and acquisition
 
—

 
—

 
362

 
385

Residential construction
 
461

 
461

 
566

 
679

Consumer
 
3,772

 
4,042

 
766

 
990

Total
 
$
21,366

 
$
35,652

 
$
21,464

 
$
32,263


Loans, excluding purchased credit impaired loans
The following is an aging of the recorded investment of the loan portfolio as of September 30, 2016 and December 31, 2015:
 
 
Current
Loans
 
30 - 59
Days
Past Due
 
60 - 89
Days
Past Due
 
Greater
than 90
Days Past
Due
 
Total
Past Due
 
Nonaccrual
Loans
 
Total Loans
September 30, 2016
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
2,515,042

 
$
2,542

 
$
609

 
$
—

 
$
3,151

 
$
9,466

 
$
2,527,659

Unsecured
 
97,496

 
5

 
—

 
—

 
5

 
36

 
97,537

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
164,927

 
400

 
34

 
—

 
434

 
579

 
165,940

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
238,887

 
—

 
200

 
—

 
200

 
934

 
240,021

Income property
 
1,376,735

 
90

 
—

 
—

 
90

 
1,957

 
1,378,782

Owner occupied
 
1,043,376

 
58

 
—

 
—

 
58

 
4,161

 
1,047,595

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
11,933

 
119

 
—

 
—

 
119

 
—

 
12,052

Residential construction
 
116,327

 
213

 
305

 
—

 
518

 
461

 
117,306

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
89,373

 
—

 
—

 
—

 
—

 
—

 
89,373

Owner occupied
 
110,853

 
—

 
—

 
—

 
—

 
—

 
110,853

Consumer
 
314,581

 
649

 
873

 
—

 
1,522

 
3,772

 
319,875

Total
 
$
6,079,530

 
$
4,076

 
$
2,021

 
$
—

 
$
6,097

 
$
21,366

 
$
6,106,993

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Current
Loans
 
30 - 59
Days
Past Due
 
60 - 89
Days
Past Due
 
Greater
than 90
Days Past
Due
 
Total
Past Due
 
Nonaccrual
Loans
 
Total Loans
December 31, 2015
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
2,241,069

 
$
11,611

 
$
617

 
$
—

 
$
12,228

 
$
9,395

 
$
2,262,692

Unsecured
 
94,867

 
39

 
—

 
—

 
39

 
42

 
94,948

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
170,913

 
1,637

 
66

 
—

 
1,703

 
820

 
173,436

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
212,740

 
69

 
—

 
—

 
69

 
349

 
213,158

Income property
 
1,305,502

 
1,750

 
684

 
—

 
2,434

 
2,843

 
1,310,779

Owner occupied
 
939,396

 
599

 
—

 
—

 
599

 
6,321

 
946,316

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
14,388

 
—

 
—

 
—

 
—

 
362

 
14,750

Residential construction
 
119,809

 
—

 
—

 
—

 
—

 
566

 
120,375

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
83,634

 
—

 
—

 
—

 
—

 
—

 
83,634

Owner occupied
 
81,671

 
—

 
—

 
—

 
—

 
—

 
81,671

Consumer
 
328,219

 
2,597

 
780

 
—

 
3,377

 
766

 
332,362

Total
 
$
5,592,208

 
$
18,302

 
$
2,147

 
$
—

 
$
20,449

 
$
21,464

 
$
5,634,121




The following is an analysis of impaired loans as of September 30, 2016 and December 31, 2015:
 
 
Recorded Investment
of Loans
Collectively Measured
for Contingency
Provision
 
Recorded Investment
of Loans
Individually
Measured for
Specific
Impairment
 
Impaired Loans With
Recorded Allowance
 
Impaired Loans Without
Recorded Allowance
 
 
Recorded
Investment
 
Unpaid
Principal
Balance
 
Related
Allowance
 
Recorded
Investment
 
Unpaid
Principal
Balance
September 30, 2016
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
2,520,876

 
$
6,783

 
$
1,208

 
$
1,277

 
$
873

 
$
5,575

 
$
11,840

Unsecured
 
97,537

 
—

 
—

 
—

 
—

 
—

 
—

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
165,394

 
546

 
358

 
591

 
353

 
188

 
402

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
239,313

 
708

 
—

 
—

 
—

 
708

 
687

Income property
 
1,376,349

 
2,433

 
546

 
551

 
28

 
1,887

 
2,124

Owner occupied
 
1,043,849

 
3,746

 
—

 
—

 
—

 
3,746

 
6,340

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
11,950

 
102

 
—

 
—

 
—

 
102

 
102

Residential construction
 
116,970

 
336

 
—

 
—

 
—

 
336

 
336

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
89,373

 
—

 
—

 
—

 
—

 
—

 
—

Owner occupied
 
110,853

 
—

 
—

 
—

 
—

 
—

 
—

Consumer
 
316,281

 
3,594

 
2,976

 
3,010

 
46

 
618

 
700

Total
 
$
6,088,745

 
$
18,248

 
$
5,088

 
$
5,429

 
$
1,300

 
$
13,160

 
$
22,531

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Recorded Investment
of Loans
Collectively Measured
for Contingency
Provision
 
Recorded Investment
of Loans
Individually
Measured for
Specific
Impairment
 
Impaired Loans With
Recorded Allowance
 
Impaired Loans Without
Recorded Allowance
 
 
 
 
Recorded
Investment
 
Unpaid
Principal
Balance
 
Related
Allowance
 
Recorded
Investment
 
Unpaid
Principal
Balance
December 31, 2015
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
2,257,168

 
$
5,524

 
$
690

 
$
718

 
$
321

 
$
4,834

 
$
6,455

Unsecured
 
94,948

 
—

 
—

 
—

 
—

 
—

 
—

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
172,150

 
1,286

 
314

 
339

 
314

 
972

 
1,397

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
213,158

 
—

 
—

 
—

 
—

 
—

 
—

Income property
 
1,308,673

 
2,106

 
—

 
—

 
—

 
2,106

 
2,311

Owner occupied
 
940,261

 
6,055

 
—

 
—

 
—

 
6,055

 
8,528

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
14,283

 
467

 
—

 
—

 
—

 
467

 
490

Residential construction
 
119,813

 
562

 
335

 
335

 
3

 
227

 
227

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
83,634

 
—

 
—

 
—

 
—

 
—

 
—

Owner occupied
 
81,671

 
—

 
—

 
—

 
—

 
—

 
—

Consumer
 
332,282

 
80

 
15

 
15

 
15

 
65

 
139

Total
 
$
5,618,041

 
$
16,080

 
$
1,354

 
$
1,407

 
$
653

 
$
14,726

 
$
19,547

The following table provides additional information on impaired loans for the three and nine month periods indicated:
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
 
2016
 
2015
 
2016
 
2015
 
 
Average Recorded
Investment
Impaired Loans 
 
Interest Recognized
on
Impaired Loans
 
Average Recorded
Investment
Impaired Loans 
 
Interest Recognized
on
Impaired Loans
 
Average Recorded
Investment
Impaired Loans 
 
Interest Recognized
on
Impaired Loans
 
Average Recorded
Investment
Impaired Loans 
 
Interest Recognized
on
Impaired Loans
 
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
6,909

 
$
15

 
$
6,507

 
$
3

 
$
9,506

 
$
48

 
$
8,602

 
$
10

Unsecured
 
—

 
—

 
—

 
—

 
—

 
—

 
1

 
—

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
617

 
5

 
3,315

 
11

 
796

 
8

 
3,238

 
35

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
708

 
—

 
—

 
—

 
354

 
—

 
118

 
—

Income property
 
1,939

 
8

 
2,061

 
10

 
2,010

 
19

 
3,114

 
27

Owner occupied
 
4,486

 
—

 
6,665

 
65

 
5,001

 
—

 
7,302

 
533

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
103

 
1

 
825

 
1

 
245

 
4

 
685

 
4

Residential construction
 
449

 
—

 
893

 
—

 
506

 
—

 
670

 
—

Consumer
 
3,345

 
25

 
27

 
1

 
2,084

 
46

 
216

 
3

Total
 
$
18,556

 
$
54

 
$
20,293

 
$
91

 
$
20,502

 
$
125

 
$
23,946

 
$
612

The following is an analysis of loans classified as troubled debt restructurings (“TDR”) during the three and nine months ended September 30, 2016 and 2015:
 
 
Three months ended September 30, 2016
 
Three months ended September 30, 2015
 
 
Number of TDR Modifications
 
Pre-Modification
Outstanding
Recorded
Investment
 
Post-Modification
Outstanding
Recorded
Investment
 
Number of TDR Modifications
 
Pre-Modification
Outstanding
Recorded
Investment
 
Post-Modification
Outstanding
Recorded
Investment
 
 
(dollars in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
2

 
$
90

 
$
90

 
4

 
$
2,903

 
$
2,903

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
1

 
85

 
85

 
—

 
—

 
—

Consumer
 
10

 
731

 
731

 
—

 
—

 
—

Total
 
13

 
$
906

 
$
906

 
4

 
$
2,903

 
$
2,903

 
 
Nine months ended September 30, 2016
 
Nine months ended September 30, 2015
 
 
Number of TDR Modifications
 
Pre-Modification
Outstanding
Recorded
Investment
 
Post-Modification
Outstanding
Recorded
Investment
 
Number of TDR Modifications
 
Pre-Modification
Outstanding
Recorded
Investment
 
Post-Modification
Outstanding
Recorded
Investment
 
 
(dollars in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
7

 
$
1,753

 
$
1,753

 
4

 
$
2,903

 
$
2,903

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
2

 
115

 
115

 
1

 
30

 
30

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Owner occupied
 
1

 
250

 
250

 
—

 
—

 
—

Consumer
 
28

 
3,442

 
3,442

 
—

 
—

 
—

Total
 
38

 
$
5,560

 
$
5,560

 
5

 
$
2,933

 
$
2,933


The Company’s loans classified as TDR are loans that have been modified or the borrower has been granted special concessions due to financial difficulties that, if not for the challenges of the borrower, the Company would not otherwise consider. The TDR modifications or concessions are made to increase the likelihood that these borrowers with financial difficulties will be able to satisfy their debt obligations as amended. The concessions granted in the restructurings summarized in the table above largely consisted of maturity extensions, interest rate modifications or a combination of both. In limited circumstances, a reduction in the principal balance of the loan could also be made as a concession. Credit losses for loans classified as TDR are measured on the same basis as impaired loans. For impaired loans, an allowance is established when the collateral value less selling costs (or discounted cash flows or observable market price) of the impaired loan is lower than the recorded investment of that loan.
The Company had commitments to lend $51 thousand of additional funds on loans classified as TDR as of September 30, 2016. The Company had no such commitments at December 31, 2015. The Company did not have any loans modified as TDR that defaulted within twelve months of being modified as TDR during the three and nine month periods ended September 30, 2016 and 2015.
Purchased Credit Impaired Loans
Purchased credit impaired (“PCI”) loans are accounted for under ASC 310-30 and initially measured at fair value based on expected future cash flows over the life of the loans. Loans that have common risk characteristics are aggregated into pools. The Company remeasures contractual and expected cash flows, at the pool-level, on a quarterly basis.
Contractual cash flows are calculated based upon the loan pool terms after applying a prepayment factor. Calculation of the applied prepayment factor for contractual cash flows is the same as described below for expected cash flows.
Inputs to the determination of expected cash flows include cumulative default and prepayment data as well as loss severity and recovery lag information. Cumulative default and prepayment data are calculated via a transition matrix, which utilizes probability values of a loan pool transitioning into a particular delinquency state (e.g. 0-30 days past due, 31 to 60 days, etc.) given its delinquency state at the remeasurement date. Loss severity factors are based upon either actual charge-off data within the loan pools or industry averages, and recovery lags are based upon the collateral within the loan pools.
The excess of cash flows expected to be collected over the initial fair value of purchased credit impaired loans is referred to as the accretable yield and is accreted into interest income over the estimated life of the acquired loans using the effective yield method. Other adjustments to the accretable yield include changes in the estimated remaining life of the acquired loans, changes in expected cash flows and changes of indices for acquired loans with variable interest rates.
The following is an analysis of our PCI loans, net of related allowance for losses and remaining valuation discounts as of September 30, 2016 and December 31, 2015:
 
 
September 30, 2016
 
December 31, 2015
 
 
(in thousands)
Commercial business
 
$
24,436

 
$
38,784

Real estate:
 
 
 
 
One-to-four family residential
 
22,227

 
27,195

Commercial and multifamily residential
 
98,178

 
106,308

Total real estate
 
120,405

 
133,503

Real estate construction:
 
 
 
 
One-to-four family residential
 
867

 
2,326

Commercial and multifamily residential
 
1,754

 
1,834

Total real estate construction
 
2,621

 
4,160

Consumer
 
17,632

 
20,903

Subtotal of PCI loans
 
165,094

 
197,350

Less:
 
 
 
 
Valuation discount resulting from acquisition accounting
 
12,330

 
16,444

Allowance for loan losses
 
11,502

 
13,726

PCI loans, net of allowance for loan losses
 
$
141,262

 
$
167,180


The following table shows the changes in accretable yield for PCI loans for the three and nine months ended September 30, 2016 and 2015:
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
 
2016
 
2015
 
2016
 
2015
 
 
(in thousands)
Balance at beginning of period
 
$
52,909

 
$
67,283

 
$
58,981

 
$
73,849

Accretion
 
(4,902
)
 
(5,049
)
 
(12,905
)
 
(17,105
)
Disposals
 
(178
)
 
256

 
(157
)
 
(1,796
)
Reclassifications from nonaccretable difference
 
1,034

 
350

 
2,944

 
7,892

Balance at end of period
 
$
48,863

 
$
62,840

 
$
48,863

 
$
62,840
v3.5.0.2
Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit
 9 Months Ended
Sep. 30, 2016
Allowance For Loan And Lease Losses And Unfunded Loan Commitments And Letters Of Credit  
Allowance For Loan And Lease Losses And Unfunded Loan Commitments And Letters Of Credit Text Block
Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit
We record an allowance for loan and lease losses (the “allowance”) to recognize management’s estimate of credit losses incurred in the loan portfolio at each balance sheet date. Management’s allowance estimate is measured quarterly and the primary components include allowances related to:
1.
Loans collectively evaluated for impairment under the Contingencies topic of the FASB ASC.
2.
Loans individually determined to be impaired in accordance with the Receivables topic of the FASB ASC.
3.
Purchased credit impaired loans accounted for under the Receivables topic of the FASB ASC.
The allowance for loans collectively evaluated for impairment is measured using quantitative information adjusted by qualitative factors. Quantitative information includes credit loss experience over a historical base period and a loss emergence period estimated by loan product category such as commercial business, commercial real estate, etc. Historical loss experience by loan class incorporates the loan’s risk rating migration from origination to the point of loss. Loan risk ratings are assigned based upon an assessment of the borrower’s ability to service the debt. In the event a borrower experiences financial deterioration such that the primary source of loan repayment is at risk, secondary sources of loan repayment, such as guarantors, are considered.
As conditions likely differ between the historical base period and the balance sheet date, management qualitatively adjusts the historical loss rate to assist in ensuring our allowance estimate reflects current conditions. Such qualitative adjustments include general economic and business conditions affecting our marketplace, seasoning of the loan portfolio, duration of the business cycle, trends with respect to delinquencies and problem loans, etc. In addition, the allowance may include an unallocated amount to recognize factors inherent in our loan portfolio but not otherwise contemplated. Any unallocated amount generally comprises less than 5% of the allowance.
For loans individually determined to be impaired, the Company measures impairment on a loan-by-loan basis using either the discounted expected future cash flows, observable market price, or the fair value of the collateral less selling costs if the loan is collateral dependent or if foreclosure is probable. A specific reserve for such loans is recognized to the extent the measured value is less than the loan’s recorded investment.
Purchased credit impaired loans that have common risk characteristics are aggregated into loan pools. When required, we record impairment, at the pool-level, to adjust the pool’s carrying value to its net present value of expected future cash flows. Quarterly, we re-measure expected loan pool cash flows. If, due to credit deterioration, the present value of expected cash flows is less than carrying value, we reduce the loan pool’s carrying value by adjusting the allowance with an impairment charge to earnings which is recorded as provision for loan losses. If credit quality improves and the present value of expected cash flows exceeds carrying value, we increase the loan pool’s carrying value by recapturing previously recorded allowance, if any. See Note 4, Loans, for further discussion of the accounting for PCI loans. Credit losses attributable to draws on purchased credit impaired loans, advanced subsequent to the loan purchase date, are accounted for under the Contingencies topic of the FASB ASC as described above.
We have used the same methodology for allowance calculations during the nine months ended September 30, 2016 and 2015. The Company carefully monitors the loan portfolio and continues to emphasize the importance of credit quality. We recognize loan charge-offs when management determines that all or a portion of a loan balance is uncollectable and the uncollectable amount can be reasonably estimated.
The following tables show a detailed analysis of the allowance for the three and nine months ended September 30, 2016 and 2015:
 
 
 
Beginning
Balance
 
Charge-offs
 
Recoveries
 
Provision (Recovery)
 
Ending
Balance
 
Specific
Reserve
 
General
Allocation
Three months ended September 30, 2016
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
31,808

 
$
(2,128
)
 
$
787

 
$
2,008

 
$
32,475

 
$
873

 
$
31,602

Unsecured
 
1,265

 
(31
)
 
67

 
(128
)
 
1,173

 
—

 
1,173

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
675

 
—

 
81

 
221

 
977

 
353

 
624

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
1,422

 
—

 
—

 
92

 
1,514

 
—

 
1,514

Income property
 
8,046

 
—

 
10

 
149

 
8,205

 
28

 
8,177

Owner occupied
 
6,336

 
—

 
10

 
487

 
6,833

 
—

 
6,833

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
587

 
—

 
2

 
(134
)
 
455

 
—

 
455

Residential construction
 
1,376

 
—

 
19

 
(393
)
 
1,002

 
—

 
1,002

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
904

 
—

 
107

 
(480
)
 
531

 
—

 
531

Owner occupied
 
1,384

 
—

 
—

 
57

 
1,441

 
—

 
1,441

Consumer
 
3,559

 
(383
)
 
399

 
168

 
3,743

 
46

 
3,697

Purchased credit impaired
 
11,781

 
(2,062
)
 
2,216

 
(433
)
 
11,502

 
—

 
11,502

Unallocated
 
161

 
—

 
—

 
252

 
413

 
—

 
413

Total
 
$
69,304

 
$
(4,604
)
 
$
3,698

 
$
1,866

 
$
70,264

 
$
1,300

 
$
68,964

 
 
Beginning
Balance
 
Charge-offs
 
Recoveries
 
Provision (Recovery)
 
Ending
Balance
 
Specific
Reserve
 
General
Allocation
Nine months ended September 30, 2016
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
32,321

 
$
(8,798
)
 
$
2,126

 
$
6,826

 
$
32,475

 
$
873

 
$
31,602

Unsecured
 
1,299

 
(75
)
 
143

 
(194
)
 
1,173

 
—

 
1,173

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
916

 
(35
)
 
142

 
(46
)
 
977

 
353

 
624

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
1,178

 
(26
)
 
2

 
360

 
1,514

 
—

 
1,514

Income property
 
6,616

 
—

 
191

 
1,398

 
8,205

 
28

 
8,177

Owner occupied
 
5,550

 
—

 
26

 
1,257

 
6,833

 
—

 
6,833

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
339

 
—

 
55

 
61

 
455

 
—

 
455

Residential construction
 
733

 
—

 
225

 
44

 
1,002

 
—

 
1,002

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
388

 
—

 
109

 
34

 
531

 
—

 
531

Owner occupied
 
1,006

 
—

 
—

 
435

 
1,441

 
—

 
1,441

Consumer
 
3,531

 
(983
)
 
765

 
430

 
3,743

 
46

 
3,697

Purchased credit impaired
 
13,726

 
(7,826
)
 
5,291

 
311

 
11,502

 
—

 
11,502

Unallocated
 
569

 
—

 
—

 
(156
)
 
413

 
—

 
413

Total
 
$
68,172

 
$
(17,743
)
 
$
9,075

 
$
10,760

 
$
70,264

 
$
1,300

 
$
68,964


 
 
Beginning
Balance
 
Charge-offs
 
Recoveries
 
Provision (Recovery)
 
Ending
Balance
 
Specific
Reserve
 
General
Allocation
Three months ended September 30, 2015
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
27,708

 
$
(2,439
)
 
$
530

 
$
5,189

 
$
30,988

 
$
1,020

 
$
29,968

Unsecured
 
857

 
(131
)
 
93

 
471

 
1,290

 
—

 
1,290

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
1,355

 
—

 
261

 
(420
)
 
1,196

 
84

 
1,112

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
1,581

 
—

 
130

 
123

 
1,834

 
—

 
1,834

Income property
 
8,197

 
(83
)
 
273

 
22

 
8,409

 
—

 
8,409

Owner occupied
 
5,801

 
(115
)
 
14

 
473

 
6,173

 
17

 
6,156

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
497

 
—

 
98

 
(206
)
 
389

 
64

 
325

Residential construction
 
958

 
—

 
7

 
(250
)
 
715

 
—

 
715

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
407

 
—

 
2

 
(68
)
 
341

 
—

 
341

Owner occupied
 
441

 
—

 
—

 
(31
)
 
410

 
—

 
410

Consumer
 
3,182

 
(311
)
 
297

 
49

 
3,217

 
14

 
3,203

Purchased credit impaired
 
16,174

 
(3,198
)
 
1,533

 
(519
)
 
13,990

 
—

 
13,990

Unallocated
 
2,099

 
—

 
—

 
(2,002
)
 
97

 
—

 
97

Total
 
$
69,257

 
$
(6,277
)
 
$
3,238

 
$
2,831

 
$
69,049

 
$
1,199

 
$
67,850

 
 
Beginning
Balance
 
Charge-offs
 
Recoveries
 
Provision (Recovery)
 
Ending
Balance
 
Specific
Reserve
 
General
Allocation
Nine months ended September 30, 2015
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
25,923

 
$
(5,847
)
 
$
1,242

 
$
9,670

 
$
30,988

 
$
1,020

 
$
29,968

Unsecured
 
927

 
(235
)
 
208

 
390

 
1,290

 
—

 
1,290

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
2,281

 
(297
)
 
288

 
(1,076
)
 
1,196

 
84

 
1,112

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
799

 
—

 
130

 
905

 
1,834

 
—

 
1,834

Income property
 
9,159

 
(126
)
 
3,532

 
(4,156
)
 
8,409

 
—

 
8,409

Owner occupied
 
5,007

 
(115
)
 
36

 
1,245

 
6,173

 
17

 
6,156

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
1,197

 
—

 
101

 
(909
)
 
389

 
64

 
325

Residential construction
 
1,860

 
—

 
40

 
(1,185
)
 
715

 
—

 
715

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
622

 
—

 
7

 
(288
)
 
341

 
—

 
341

Owner occupied
 
434

 
—

 
—

 
(24
)
 
410

 
—

 
410

Consumer
 
3,180

 
(1,521
)
 
707

 
851

 
3,217

 
14

 
3,203

Purchased credit impaired
 
16,336

 
(10,174
)
 
5,262

 
2,566

 
13,990

 
—

 
13,990

Unallocated
 
1,844

 
—

 
—

 
(1,747
)
 
97

 
—

 
97

Total
 
$
69,569

 
$
(18,315
)
 
$
11,553

 
$
6,242

 
$
69,049

 
$
1,199

 
$
67,850


Changes in the allowance for unfunded commitments and letters of credit, a component of “Other liabilities” in the consolidated balance sheet, are summarized as follows:
 
 
Three Months Ended
 
Nine Months Ended
 
 
September 30,
 
September 30,
 
 
2016
 
2015
 
2016
 
2015
 
 
(in thousands)
Balance at beginning of period
 
$
2,780

 
$
2,930

 
$
2,930

 
$
2,655

Net changes in the allowance for unfunded commitments and letters of credit
 
125

 
—

 
(25
)
 
275

Balance at end of period
 
$
2,905

 
$
2,930

 
$
2,905

 
$
2,930


Risk Elements
The extension of credit in the form of loans or other credit products to individuals and businesses is one of our principal business activities. Our policies and applicable laws and regulations require risk analysis as well as ongoing portfolio and credit management. We manage our credit risk through lending limit constraints, credit review, approval policies and extensive, ongoing internal monitoring. We also manage credit risk through diversification of the loan portfolio by type of loan, type of industry and type of borrower and by limiting the aggregation of debt to a single borrower.
Risk ratings are reviewed and updated whenever appropriate, with more periodic reviews as the risk and dollar value of loss on the loan increases. In the event full collection of principal and interest is not reasonably assured, the loan is appropriately downgraded and, if warranted, placed on nonaccrual status even though the loan may be current as to principal and interest payments. Additionally, we assess whether an impairment of a loan warrants specific reserves or a write-down of the loan.
Pass rated loans are generally considered to have sufficient sources of repayment in order to repay the loan in full in accordance with all terms and conditions. Special Mention rated loans have potential weaknesses that, if left uncorrected, may result in deterioration of the repayment prospects for the asset or in the Company’s credit position at some future date. Loans with a risk rating of Substandard or worse are reported as classified loans in our allowance analysis. We review these loans to assess the ability of our borrowers to service all interest and principal obligations and, as a result, the risk rating may be adjusted accordingly. Loans risk rated as Substandard reflect loans where a loss is possible if loan weaknesses are not corrected. Doubtful rated loans have a high probability of loss, however, the amount of loss has not yet been determined. Loss rated loans are considered uncollectable and when identified, are charged off.
The following is an analysis of the credit quality of our loan portfolio, excluding PCI loans, as of September 30, 2016 and December 31, 2015:
 
 
Pass
 
Special Mention
 
Substandard
 
Doubtful
 
Loss
 
Total
September 30, 2016
 
(in thousands)
Loans, excluding PCI loans:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
2,417,653

 
$
48,462

 
$
61,544

 
$
—

 
$
—

 
$
2,527,659

Unsecured
 
96,402

 
800

 
335

 
—

 
—

 
97,537

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
164,102

 
458

 
1,380

 
—

 
—

 
165,940

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
233,795

 
5,276

 
950

 
—

 
—

 
240,021

Income property
 
1,354,651

 
17,048

 
7,083

 
—

 
—

 
1,378,782

Owner occupied
 
1,027,356

 
5,745

 
14,494

 
—

 
—

 
1,047,595

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
12,052

 
—

 
—

 
—

 
—

 
12,052

Residential construction
 
116,187

 
—

 
1,119

 
—

 
—

 
117,306

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
89,373

 
—

 
—

 
—

 
—

 
89,373

Owner occupied
 
106,310

 
—

 
4,543

 
—

 
—

 
110,853

Consumer
 
312,602

 
—

 
7,273

 
—

 
—

 
319,875

Total
 
$
5,930,483

 
$
77,789

 
$
98,721

 
$
—

 
$
—

 
6,106,993

Less:
 
 
 
 
 
 
 
 
 
 
 
 
Allowance for loan and lease losses
 
58,762

Loans, excluding PCI loans, net
 
$
6,048,231

 
 
Pass
 
Special Mention
 
Substandard
 
Doubtful
 
Loss
 
Total
December 31, 2015
 
(in thousands)
Loans, excluding PCI loans:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
2,146,729

 
$
59,746

 
$
56,217

 
$
—

 
$
—

 
$
2,262,692

Unsecured
 
93,347

 
278

 
1,323

 
—

 
—

 
94,948

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
171,945

 
52

 
1,439

 
—

 
—

 
173,436

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
207,768

 
4,966

 
424

 
—

 
—

 
213,158

Income property
 
1,296,043

 
5,889

 
8,847

 
—

 
—

 
1,310,779

Owner occupied
 
918,986

 
9,668

 
17,662

 
—

 
—

 
946,316

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
14,388

 
—

 
362

 
—

 
—

 
14,750

Residential construction
 
119,243

 
—

 
1,132

 
—

 
—

 
120,375

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
83,634

 
—

 
—

 
—

 
—

 
83,634

Owner occupied
 
81,270

 
—

 
401

 
—

 
—

 
81,671

Consumer
 
328,286

 
—

 
4,076

 
—

 
—

 
332,362

Total
 
$
5,461,639

 
$
80,599

 
$
91,883

 
$
—

 
$
—

 
5,634,121

Less:
 
 
 
 
 
 
 
 
 
 
 
 
Allowance for loan and lease losses
 
54,446

Loans, excluding PCI loans, net
 
$
5,579,675


The following is an analysis of the credit quality of our PCI loan portfolio as of September 30, 2016 and December 31, 2015:
 
 
Pass
 
Special Mention
 
Substandard
 
Doubtful
 
Loss
 
Total
September 30, 2016
 
(in thousands)
PCI loans:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
21,420

 
$
94

 
$
2,191

 
$
—

 
$
—

 
$
23,705

Unsecured
 
731

 
—

 
—

 
—

 
—

 
731

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
20,996

 
—

 
1,231

 
—

 
—

 
22,227

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
7,745

 
—

 
392

 
—

 
—

 
8,137

Income property
 
31,481

 
—

 
2,445

 
—

 
—

 
33,926

Owner occupied
 
54,471

 
—

 
1,644

 
—

 
—

 
56,115

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
767

 
—

 
100

 
—

 
—

 
867

Residential construction
 
—

 
—

 
—

 
—

 
—

 
—

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
1,239

 
—

 
—

 
—

 
—

 
1,239

Owner occupied
 
515

 
—

 
—

 
—

 
—

 
515

Consumer
 
17,168

 
—

 
464

 
—

 
—

 
17,632

Total
 
$
156,533

 
$
94

 
$
8,467

 
$
—

 
$
—

 
165,094

Less:
 
 
 
 
 
 
 
 
 
 
 
 
Valuation discount resulting from acquisition accounting
 
12,330

Allowance for loan losses
 
11,502

PCI loans, net
 
$
141,262

 
 
Pass
 
Special Mention
 
Substandard
 
Doubtful
 
Loss
 
Total
December 31, 2015
 
(in thousands)
PCI loans:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
31,468

 
$
101

 
$
5,995

 
$
—

 
$
—

 
$
37,564

Unsecured
 
1,218

 
—

 
2

 
—

 
—

 
1,220

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
25,018

 
—

 
2,177

 
—

 
—

 
27,195

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
8,234

 
—

 
664

 
—

 
—

 
8,898

Income property
 
36,426

 
—

 
5,916

 
—

 
—

 
42,342

Owner occupied
 
53,071

 
261

 
1,736

 
—

 
—

 
55,068

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
1,086

 
—

 
479

 
—

 
—

 
1,565

Residential construction
 
427

 
—

 
334

 
—

 
—

 
761

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
1,303

 
—

 
—

 
—

 
—

 
1,303

Owner occupied
 
531

 
—

 
—

 
—

 
—

 
531

Consumer
 
20,122

 
—

 
781

 
—

 
—

 
20,903

Total
 
$
178,904

 
$
362

 
$
18,084

 
$
—

 
$
—

 
197,350

Less:
 
 
 
 
 
 
 
 
 
 
 
 
Valuation discount resulting from acquisition accounting
 
16,444

Allowance for loan losses
 
13,726

PCI loans, net
 
$
167,180
v3.5.0.2
Other Real Estate Owned
 9 Months Ended
Sep. 30, 2016
Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]  
Other Real Estate Owned
Other Real Estate Owned (“OREO”)
The following tables set forth activity in OREO for the three and nine months ended September 30, 2016 and 2015:
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
 
2016
 
2015
 
2016
 
2015
 
 
(in thousands)
Balance, beginning of period
 
$
10,613

 
$
20,617

 
$
13,738

 
$
22,190

Transfers in
 
891

 
915

 
1,202

 
8,751

Valuation adjustments
 
(14
)
 
(664
)
 
(290
)
 
(1,457
)
Proceeds from sale of OREO property
 
(2,569
)
 
(1,675
)
 
(5,845
)
 
(13,283
)
Gain on sale of OREO, net
 
73

 
263

 
189

 
3,255

Balance, end of period
 
$
8,994

 
$
19,456

 
$
8,994

 
$
19,456


At September 30, 2016, the carrying amount of foreclosed residential real estate properties held as a result of obtaining physical possession was $604 thousand and the recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process was $876 thousand.
v3.5.0.2
Covered Assets and FDIC Loss-sharing Asset
 9 Months Ended
Sep. 30, 2016
Covered Assets And FDIC Loss Sharing Asset  
Covered Assets and FDIC Loss sharing Asset
FDIC Loss-sharing Asset and Covered Assets
We are a party to eight loss-sharing agreements with the FDIC relating to four FDIC-assisted acquisitions. Such agreements cover a substantial portion of losses incurred on acquired covered loans and OREO. The loss-sharing agreements relate to the acquisitions of (1) Columbia River Bank in January 2010, (2) American Marine Bank in January 2010, (3) Summit Bank in May 2011, and (4) First Heritage Bank in May 2011. Under the terms of the loss-sharing agreements, the FDIC will absorb 80% of losses and share in 80% of loss recoveries up to specified amounts. With respect to loss-sharing agreements for two acquisitions completed in 2010, after those specified amounts, the FDIC will absorb 95% of losses and share in 95% of loss recoveries. The loss-sharing provisions of the agreements for non-single family and single family mortgage loans are in effect for five and ten years, respectively, and the loss recovery provisions are in effect for eight and ten years, respectively. The loss-sharing provisions for the Columbia River Bank and American Marine Bank non-single family covered assets were effective through the end of the first quarter of 2015. In addition, the loss-sharing provisions for the Summit Bank and First Heritage Bank non-single family covered assets expired at the end of the second quarter of 2016. Accordingly, further activity will be limited to recoveries through the first quarter of 2018 and second quarter of 2019, respectively, for assets covered by these loss-sharing agreements.
Ten years and forty-five days after the applicable acquisition dates, the Bank must pay to the FDIC a clawback in the event the losses from the acquisitions fail to reach stated levels. The amount of the clawback is determined by a formula specified in each individual loss-sharing agreement. As of September 30, 2016, the net present value of the Bank’s estimated clawback liability was $5.5 million, which was included in other liabilities on the consolidated balance sheets.
At September 30, 2016, the FDIC loss-sharing asset was comprised of a $3.2 million FDIC indemnification asset and a $438 thousand FDIC receivable. The indemnification asset represents the net present value of cash flows the Company expects to collect from the FDIC under the loss-sharing agreements and the FDIC receivable represents amounts from the FDIC for which the Company has requested reimbursement but has not yet received reimbursement.
For PCI loans, the Company remeasures contractual and expected cash flows on a quarterly basis. When the quarterly remeasurement process results in a decrease in expected cash flows due to an increase in expected credit losses, impairment is recorded. As a result of this impairment, for loans covered by loss-sharing agreements with respect to which the loss-sharing provisions are still effective, the indemnification asset is increased to reflect anticipated future cash to be received from the FDIC. Consistent with the loss-sharing agreements between the Company and the FDIC, the amount of the increase to the indemnification asset is measured as 80% of the resulting impairment.
Alternatively, when the quarterly remeasurement results in an increase in expected future cash flows due to a decrease in expected credit losses, the nonaccretable difference decreases and the effective yield of the related loan portfolio is increased. As a result of the improved expected cash flows, for loans covered by loss-sharing agreements with respect to which the loss-sharing provisions are still effective, the indemnification asset would be reduced first by the amount of any impairment previously recorded and, second, by increased amortization over the remaining life of the related loss-sharing agreement.
The following table shows a detailed analysis of the FDIC loss-sharing asset for the three and nine months ended September 30, 2016 and 2015:
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
 
2016
 
2015
 
2016
 
2015
 
 
(in thousands)
Balance at beginning of period
 
$
4,266

 
$
9,344

 
$
6,568

 
$
15,174

Adjustments not reflected in income:
 
 
 
 
 
 
 
 
Cash (received from) paid to the FDIC, net
 
20

 
799

 
(23
)
 
(2,723
)
FDIC reimbursable recoveries, net
 
(590
)
 
(362
)
 
(756
)
 
(1,326
)
Adjustments reflected in income:
 
 
 
 
 
 
 
 
Amortization, net
 
(315
)
 
(1,416
)
 
(2,530
)
 
(5,086
)
Loan impairment (recapture)
 
266

 
(119
)
 
393

 
1,413

Sale of other real estate
 
(49
)
 
(126
)
 
71

 
(753
)
Valuation adjustments of other real estate owned
 
—

 
25

 
(22
)
 
1,148

Other
 
(6
)
 
1

 
(109
)
 
299

Balance at end of period
 
$
3,592

 
$
8,146

 
$
3,592

 
$
8,146


The following table presents information about the composition of the FDIC loss-sharing asset, the clawback liability, and the non-single family and the single family covered assets as of the date indicated:
 
 
September 30, 2016
 
 
Columbia River Bank
 
American Marine Bank
 
Summit Bank
 
First Heritage Bank
 
Total
 
 
(in thousands)
FDIC loss-sharing asset (liability)
 
$
349

 
$
1,959

 
$
1,577

 
$
(293
)
 
$
3,592

Clawback liability
 
$
3,474

 
$
1,280

 
$
—

 
$
708

 
$
5,462

Non-single family covered assets
 
$
61,040

 
$
9,366

 
$
6,700

 
$
12,145

 
$
89,251

Single family covered assets
 
$
6,110

 
$
18,563

 
$
5,077

 
$
1,645

 
$
31,395

 
 
 
 
 
 
 
 
 
 
 
Loss-sharing expiration dates:
 
 
 
 
 
 
 
 
 
 
Non-single family
 
Expired
 
Expired
 
Expired
 
Expired
 
 
Single family
 
First Quarter 2020
 
First Quarter 2020
 
Second Quarter 2021
 
Second Quarter 2021
 
 
Recovery-sharing expiration dates:
 
 
 
 
 
 
 
 
 
 
Non-single family
 
First Quarter 2018
 
First Quarter 2018
 
Second Quarter 2019
 
Second Quarter 2019
 
 
Single family
 
First Quarter 2020
 
First Quarter 2020
 
Second Quarter 2021
 
Second Quarter 2021
 
 
v3.5.0.2
Goodwill and Intangible Assets
 9 Months Ended
Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets
Goodwill and Other Intangible Assets
In accordance with the Intangibles – Goodwill and Other topic of the FASB ASC, goodwill is not amortized but is reviewed for potential impairment at the reporting unit level. Management analyzes its goodwill for impairment on an annual basis on July 31 and between annual tests in certain circumstances such as material adverse changes in legal, business, regulatory and economic factors. An impairment loss is recorded to the extent that the carrying amount of goodwill exceeds its implied fair value. The Company performed an impairment assessment as of July 31, 2016 and concluded that there was no impairment.
The core deposit intangible (“CDI”) is evaluated for impairment if events and circumstances indicate a possible impairment. The CDI is amortized on an accelerated basis over an estimated life of 10 years.

The following table sets forth activity for goodwill and other intangible assets for the periods indicated:
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
 
2016
 
2015
 
2016
 
2015
 
 
(in thousands)
Goodwill
 
 
 
 
 
 
 
 
Goodwill at beginning of period
 
$
382,762

 
$
382,537

 
$
382,762

 
$
382,537

Provisional period adjustments
 
—

 
225

 
—

 
225

Total goodwill
 
$
382,762

 
$
382,762

 
$
382,762

 
$
382,762

Other intangible assets, net
 
 
 
 
 
 
 
 
Core deposit intangible:
 
 
 
 
 
 
 
 
Gross core deposit intangible balance at beginning of period
 
58,598

 
58,598

 
58,598

 
58,598

Accumulated amortization at beginning of period
 
(39,006
)
 
(32,593
)
 
(35,940
)
 
(29,058
)
Core deposit intangible, net at beginning of period
 
19,592

 
26,005

 
22,658

 
29,540

CDI current period amortization
 
(1,460
)
 
(1,695
)
 
(4,526
)
 
(5,230
)
Total core deposit intangible, net at end of period
 
18,132

 
24,310

 
18,132

 
24,310

Intangible assets not subject to amortization
 
919

 
919

 
919

 
919

Other intangible assets, net at end of period
 
19,051

 
25,229

 
19,051

 
25,229

Total goodwill and other intangible assets at end of period
 
$
401,813

 
$
407,991

 
$
401,813

 
$
407,991


The following table provides the estimated future amortization expense of core deposit intangibles for the remaining three months ending December 31, 2016 and the succeeding four years:
 
 
Amount
 
 
(in thousands)
Year ending December 31,
 
 
2016
 
$
1,419

2017
 
4,913

2018
 
3,855

2019
 
2,951

2020
 
2,048
v3.5.0.2
Derivatives and Balance Sheet Offsetting
 9 Months Ended
Sep. 30, 2016
General Discussion of Derivative Instruments and Hedging Activities [Abstract]  
Derivatives and Hedging Activities
Derivatives and Balance Sheet Offsetting
The Company periodically enters into certain commercial loan interest rate swap agreements in order to provide commercial loan customers the ability to convert from variable to fixed interest rates. Under these agreements, the Company enters into a variable-rate loan agreement with a customer in addition to a swap agreement. This swap agreement effectively converts the customer’s variable rate loan into a fixed rate. The Company then enters into a corresponding swap agreement with a third-party in order to offset its exposure on the variable and fixed components of the customer agreement. As the interest rate swap agreements with the customers and third parties are not designated as hedges under the Derivatives and Hedging topic of the FASB ASC, the instruments are marked to market in earnings. The notional amount of open interest rate swap agreements at September 30, 2016 and December 31, 2015 was $286.5 million and $264.4 million, respectively. During the three and nine months ended September 30, 2016, a mark-to-market gain of $9 thousand and $2 thousand, respectively, were recorded to other noninterest expense. During the three and nine months ended September 30, 2015, mark-to-market losses of $6 thousand and $2 thousand, respectively, were recorded to other noninterest expense.
The following table presents the fair value of derivatives not designated as hedging instruments at September 30, 2016 and December 31, 2015:
 
Asset Derivatives
 
Liability Derivatives
 
September 30, 2016
 
December 31, 2015
 
September 30, 2016
 
December 31, 2015
 
Balance Sheet
Location
 
Fair Value
 
Balance Sheet
Location
 
Fair Value
 
Balance Sheet
Location
 
Fair Value
 
Balance Sheet
Location
 
Fair Value
 
(in thousands)
Interest rate contracts
Other assets
 
$
19,803

 
Other assets
 
$
12,438

 
Other liabilities
 
$
19,841

 
Other liabilities
 
$
12,478


The Company is party to interest rate contracts and repurchase agreements that are subject to enforceable master netting arrangements or similar agreements. Under these agreements, the Company may have the right to net settle multiple contracts with the same counterparty. The following tables show the gross interest rate swap agreements and repurchase agreements in the consolidated balance sheets and the respective collateral received or pledged in the form of other financial instruments, which are generally marketable securities. The collateral amounts in these tables are limited to the outstanding balances of the related asset or liability. Therefore, instances of overcollateralization are not shown.
 
Gross Amounts of Recognized Assets/Liabilities
 
Gross Amounts Offset in the Consolidated Balance Sheets
 
Net Amounts of Assets/Liabilities Presented in the Consolidated Balance Sheets
 
Gross Amounts Not Offset in the Consolidated Balance Sheets
 
 
 
 
Collateral Posted
 
Net Amount
September 30, 2016
(in thousands)
Assets
 
 
 
 
 
 
 
 
 
Interest rate contracts
$
19,803

 
$
—

 
$
19,803

 
$
—

 
$
19,803

Liabilities
 
 
 
 
 
 
 
 
 
Interest rate contracts
$
19,841

 
$
—

 
$
19,841

 
$
(19,841
)
 
$
—

Repurchase agreements
$
69,189

 
$
—

 
$
69,189

 
$
(69,189
)
 
$
—

 
 
 
 
 
 
 
 
 
 
December 31, 2015
 
 
 
 
 
 
 
 
 
Assets
 
 
 
 
 
 
 
 
 
Interest rate contracts
$
12,438

 
$
—

 
$
12,438

 
$
—

 
$
12,438

Liabilities
 
 
 
 
 
 
 
 
 
Interest rate contracts
$
12,478

 
$
—

 
$
12,478

 
$
(12,478
)
 
$
—

Repurchase agreements
$
99,699

 
$
—

 
$
99,699

 
$
(99,699
)
 
$
—


The following table presents the class of collateral pledged for repurchase agreements as well as the remaining contractual maturity of the repurchase agreements:
 
 
Remaining contractual maturity of the agreements
 
 
Overnight and continuous
 
Up to 30 days
 
30 - 90 days
 
Greater than 90 days
 
Total
September 30, 2016
 
(in thousands)
Class of collateral pledged for repurchase agreements
 
 
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations
 
$
44,189

 
$
—

 
$
—

 
$
25,000

 
$
69,189

Gross amount of recognized liabilities for repurchase agreements
 
 
 
 
 
 
 
 
 
69,189

Amounts related to agreements not included in offsetting disclosure
 
 
 
 
 
 
 
 
 
$
—

The collateral utilized for the Company’s repurchase agreements is subject to market fluctuations as well as prepayments of principal. The Company monitors the risk of the fair value of its pledged collateral falling below acceptable amounts based on the type of the underlying repurchase agreement. The pledged collateral related to the Company’s term wholesale repurchase agreement, which matures in 2018, is monitored on a monthly basis and additional capital is pledged when necessary. The pledged collateral related to the Company’s sweep repurchase agreements, which mature on an overnight basis, is monitored on a daily basis as the underlying sweep accounts can have frequent transaction activity and the amount of pledged collateral is adjusted as necessary.
v3.5.0.2
Commitments and Contingent Liabilities
 9 Months Ended
Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract]  
Commitments and Contingencies Disclosure [Text Block]
Commitments and Contingent Liabilities
Lease Commitments: The Company’s lease commitments consist primarily of leased locations under various non-cancellable operating leases that expire between 2016 and 2043. The majority of the leases contain renewal options and provisions for increases in rental rates based on an agreed upon index or predetermined escalation schedule.
Sale-leaseback transaction: On August 24, 2016, the Company sold one of its Washington facilities and leased back the portion of the facility utilized for branch operations. The resulting gain on sale of $742 thousand was deferred in accordance with the Leases topic of the FASB ASC and is being amortized over the life of the respective lease. At September 30, 2016, the deferred gain was $730 thousand and is a component of "Other liabilities" in the consolidated balance sheet.
Exit or disposal activities: As part of ongoing evaluations of facilities owned or leased by the Company for ongoing economic benefit, a decision was made to cease using one of our Idaho branch locations during the current quarter. As a result, in addition to recording a cease-use liability of $849 thousand in the current quarter, the Company also made a change in estimate for the useful lives of the fixed assets associated with this facility. The total expense related to the exit activity for the three and nine months ended September 30, 2016 was $857 thousand and $883 thousand, respectively, and was recorded in the noninterest expense line item "Occupancy" in the consolidated statements of income.
Financial Instruments with Off-Balance Sheet Risk: In the normal course of business, the Company makes loan commitments (typically unfunded loans and unused lines of credit) and issues standby letters of credit to accommodate the financial needs of its customers. At September 30, 2016 and December 31, 2015, the Company’s loan commitments amounted to $2.10 billion and $1.93 billion, respectively.
Standby letters of credit commit the Company to make payments on behalf of customers under specified conditions. Historically, no significant losses have been incurred by the Company under standby letters of credit. Both arrangements have credit risk essentially the same as that involved in extending loans to customers and are subject to the Company’s normal credit policies, including collateral requirements, where appropriate. Standby letters of credit were $48.4 million and $38.7 million at September 30, 2016 and December 31, 2015, respectively. In addition, commitments under commercial letters of credit used to facilitate customers’ trade transactions and other off-balance sheet liabilities amounted to $6.6 million and $5.0 million at September 30, 2016 and December 31, 2015, respectively.
Legal Proceedings: The Company and its subsidiaries are from time to time defendants in and are threatened with various legal proceedings arising from their regular business activities. Management, after consulting with legal counsel, is of the opinion that the ultimate liability, if any, resulting from these pending or threatened actions and proceedings will not have a material effect on the financial statements of the Company.
v3.5.0.2
Shareholders' Equity
 9 Months Ended
Sep. 30, 2016
Stockholders' Equity Note [Abstract]  
Shareholders' Equity
Shareholders’ Equity
Preferred Stock: In conjunction with the 2013 acquisition of West Coast Bancorp, the Company issued 8,782 shares of mandatorily convertible cumulative participating preferred stock, Series B (“Series B Preferred Stock”). The Series B Preferred Stock is not subject to the operation of a sinking fund. The Series B Preferred Stock is not redeemable by the Company and is perpetual with no maturity. The holders of Series B Preferred Stock have no general voting rights. If the Company declares and pays a dividend to its common shareholders, it must declare and pay to its holders of Series B Preferred Stock, on the same date, a dividend in an amount per share of the Series B Preferred Stock that is intended to provide such holders dividends in the amount they would have received if shares of Series B Preferred Stock had been converted into common stock as of that date. The outstanding shares of Series B Preferred Stock are convertible into 102,363 shares of Company common stock.
Dividends: On January 28, 2016, the Company declared a quarterly cash dividend of $0.18 per common share and common share equivalent for holders of preferred stock, and a special cash dividend of $0.20 per common share and common share equivalent for holders of preferred stock, both payable on February 24, 2016 to shareholders of record at the close of business on February 10, 2016.
On April 27, 2016, the Company declared a regular quarterly cash dividend of $0.19 per common share and common share equivalent for holders of preferred stock, and a special cash dividend of $0.18 per common share and common share equivalent for holders of preferred stock, both payable on May 25, 2016 to shareholders of record at the close of business on May 11, 2016.
On July 28, 2016, the Company declared a regular quarterly cash dividend of $0.20 per common share and common share equivalent for holders of preferred stock, and a special cash dividend of $0.19 per common share and common share equivalent for holders of preferred stock, both payable on August 24, 2016 to shareholders of record at the close of business on August 10, 2016.
Subsequent to quarter end, on October 27, 2016, the Company declared a regular quarterly cash dividend of $0.20 per common share and common share equivalent for holders of preferred stock, and a special cash dividend of $0.19 per common share and common share equivalent for holders of preferred stock, both payable on November 23, 2016 to shareholders of record at the close of business on November 9, 2016.
The payment of cash dividends is subject to federal regulatory requirements for capital levels and other restrictions. In addition, the cash dividends paid by Columbia Bank to the Company are subject to both federal and state regulatory requirements.
v3.5.0.2
Accumulated Other Comprehensive Income
 9 Months Ended
Sep. 30, 2016
Accumulated Other Comprehensive Income (Loss) [Abstract]  
Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss)
The following table shows changes in accumulated other comprehensive income (loss) by component for the three and nine month periods ended September 30, 2016 and 2015:
 
 
Unrealized Gains and Losses on Available-for-Sale Securities (1)
 
Unrealized Gains and Losses on Pension Plan Liability (1)
 
Total (1)
Three months ended September 30, 2016
 
(in thousands)
Beginning balance
 
$
27,280

 
$
(6,469
)
 
$
20,811

Other comprehensive loss before reclassifications
 
(4,049
)
 
—

 
(4,049
)
Amounts reclassified from accumulated other comprehensive income (loss)
 
(364
)
 
107

 
(257
)
Net current-period other comprehensive income (loss)
 
(4,413
)
 
107

 
(4,306
)
Ending balance
 
$
22,867

 
$
(6,362
)
 
$
16,505

Three months ended September 30, 2015
 
 
 
 
 
 
Beginning balance
 
$
4,819

 
$
(2,030
)
 
$
2,789

Other comprehensive income before reclassifications
 
10,126

 
—

 
10,126

Amounts reclassified from accumulated other comprehensive income (loss)
 
(151
)
 
62

 
(89
)
Net current-period other comprehensive income
 
9,975

 
62

 
10,037

Ending balance
 
$
14,794

 
$
(1,968
)
 
$
12,826

Nine months ended September 30, 2016
 
 
 
 
 
 
Beginning balance
 
$
386

 
$
(6,681
)
 
$
(6,295
)
Other comprehensive income before reclassifications
 
23,229

 
—

 
23,229

Amounts reclassified from accumulated other comprehensive income (loss)
 
(748
)
 
319

 
(429
)
Net current-period other comprehensive income
 
22,481

 
319

 
22,800

Ending balance
 
$
22,867

 
$
(6,362
)
 
$
16,505

Nine months ended September 30, 2015
 
 
 
 
 
 
Beginning balance
 
$
7,462

 
$
(1,841
)
 
$
5,621

Other comprehensive income (loss) before reclassifications
 
8,161

 
(280
)
 
7,881

Amounts reclassified from accumulated other comprehensive income (loss)
 
(829
)
 
153

 
(676
)
Net current-period other comprehensive income (loss)
 
7,332

 
(127
)
 
7,205

Ending balance
 
$
14,794

 
$
(1,968
)
 
$
12,826

__________
(1) All amounts are net of tax. Amounts in parenthesis indicate debits.

The following table shows details regarding the reclassifications from accumulated other comprehensive income (loss) for the three and nine month periods ended September 30, 2016 and 2015:
 
 
Amount Reclassified from Accumulated Other Comprehensive Income (Loss)
 
 
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
Affected line Item in the Consolidated
 
 
2016
 
2015
 
2016
 
2015
 
Statement of Income
 
 
(in thousands)
 
 
Unrealized gains and losses on available-for-sale securities
 
 
 
 
 
 
 
 
 
 
Investment securities gains
 
$
572

 
$
236

 
$
1,174

 
$
1,300

 
Investment securities gains, net
 
 
572

 
236

 
1,174

 
1,300

 
Total before tax
 
 
(208
)
 
(85
)
 
(426
)
 
(471
)
 
Income tax provision
 
 
$
364

 
$
151

 
$
748

 
$
829

 
Net of tax
 
 
 
 
 
 
 
 
 
 
 
Amortization of pension plan liability
 
 
 
 
 
 
 
 
 
 
Actuarial losses
 
$
(167
)
 
$
(97
)
 
$
(501
)
 
$
(240
)
 
Compensation and employee benefits
 
 
(167
)
 
(97
)
 
(501
)
 
(240
)
 
Total before tax
 
 
60

 
35

 
182

 
87

 
Income tax benefit
 
 
$
(107
)
 
$
(62
)
 
$
(319
)
 
$
(153
)
 
Net of tax
v3.5.0.2
Fair Value Accounting and Measurement
 9 Months Ended
Sep. 30, 2016
Fair Value Disclosures [Abstract]  
Fair Value Accounting and Measurement
Fair Value Accounting and Measurement
The Fair Value Measurements and Disclosures topic of the FASB ASC defines fair value, establishes a consistent framework for measuring fair value and expands disclosure requirements about fair value. We hold fixed and variable rate interest-bearing securities, investments in marketable equity securities and certain other financial instruments, which are carried at fair value. Fair value is determined based upon quoted prices when available or through the use of alternative approaches, such as matrix or model pricing, when market quotes are not readily accessible or available.
The valuation techniques are based upon observable and unobservable inputs. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect our own market assumptions. These two types of inputs create the following fair value hierarchy:
Level 1 – Quoted prices for identical instruments in active markets that are accessible at the measurement date.
Level 2 – Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model derived valuations whose inputs are observable or whose significant value drivers are observable.
Level 3 – Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable.
Fair values are determined as follows:
Securities at fair value are priced using a combination of market activity, industry recognized information sources, yield curves, discounted cash flow models and other factors. These fair value calculations are considered a Level 2 input method under the provisions of the Fair Value Measurements and Disclosures topic of the FASB ASC for all securities other than U.S. Treasury Notes, which are considered a Level 1 input method.
Interest rate contract positions are valued in models, which use as their basis, readily observable market parameters and are classified within Level 2 of the valuation hierarchy.
The following table sets forth the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis at September 30, 2016 and December 31, 2015 by level within the fair value hierarchy. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement:
 
 
Fair value
 
Fair Value Measurements at Reporting Date Using
 
 
Level 1
 
Level 2
 
Level 3
September 30, 2016
 
(in thousands)
Assets
 
 
 
 
 
 
 
 
Securities available for sale:
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations
 
$
1,512,924

 
$
—

 
$
1,512,924

 
$
—

State and municipal debt securities
 
503,118

 
—

 
503,118

 
—

U.S. government agency and government-sponsored enterprise securities
 
338,292

 
—

 
338,292

 
—

U.S. government securities
 
548

 
548

 
—

 
—

Other securities
 
5,202

 
—

 
5,202

 
—

Total securities available for sale
 
$
2,360,084

 
$
548

 
$
2,359,536

 
$
—

Other assets (Interest rate contracts)
 
$
19,803

 
$
—

 
$
19,803

 
$
—

Liabilities
 
 
 
 
 
 
 
 
Other liabilities (Interest rate contracts)
 
$
19,841

 
$
—

 
$
19,841

 
$
—

 
 
Fair value
 
Fair Value Measurements at Reporting Date Using
 
 
Level 1
 
Level 2
 
Level 3
December 31, 2015
 
(in thousands)
Assets
 
 
 
 
 
 
 
 
Securities available for sale:
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations
 
$
1,286,489

 
$
—

 
$
1,286,489

 
$
—

State and municipal debt securities
 
492,169

 
—

 
492,169

 
—

U.S. government agency and government-sponsored enterprise securities
 
353,782

 
—

 
353,782

 
—

U.S. government securities
 
20,137

 
20,137

 
—

 
—

Other securities
 
5,117

 
—

 
5,117

 
—

Total securities available for sale
 
$
2,157,694

 
$
20,137

 
$
2,137,557

 
$
—

Other assets (Interest rate contracts)
 
$
12,438

 
$
—

 
$
12,438

 
$
—

Liabilities
 
 
 
 
 
 
 
 
Other liabilities (Interest rate contracts)
 
$
12,478

 
$
—

 
$
12,478

 
$
—


There were no transfers between Level 1 and Level 2 of the valuation hierarchy during the nine month periods ended September 30, 2016 and 2015. The Company recognizes transfers between levels of the valuation hierarchy based on the valuation level at the end of the reporting period.
Nonrecurring Measurements
Certain assets and liabilities are measured at fair value on a nonrecurring basis after initial recognition such as loans measured for impairment and OREO. The following methods were used to estimate the fair value of each such class of financial instrument:
Impaired loans—A loan is considered to be impaired when, based on current information and events, it is probable that the Company will be unable to collect all amounts due (both interest and principal) according to the contractual terms of the loan agreement. Impaired loans are measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate, a loan’s observable market price, or the fair market value of the collateral less estimated costs to sell if the loan is a collateral-dependent loan. Generally, the Company utilizes the fair market value of the collateral to measure impairment. The impairment evaluations are performed in conjunction with the allowance process on a quarterly basis by officers in the Special Credits group, which reports to the Chief Credit Officer. The Real Estate Appraisal Services Department (“REASD”), which also reports to the Chief Credit Officer, is responsible for obtaining appraisals from third-parties or performing internal evaluations. If an appraisal is obtained from a third-party, the REASD reviews the appraisal to evaluate the adequacy of the appraisal report, including its scope, methods, accuracy, and reasonableness.
Other real estate owned—OREO is real property that the Bank has taken ownership of in partial or full satisfaction of a loan or loans. OREO is generally measured based on the property’s fair market value as indicated by an appraisal or a letter of intent to purchase. OREO is initially recorded at the fair value less estimated costs to sell. This amount becomes the property’s new basis. Any fair value adjustments based on the property’s fair value less estimated costs to sell at the date of acquisition are charged to the allowance, or in the event of a write-up without previous losses charged to the allowance, a credit to earnings is recorded. Management periodically reviews OREO in an effort to ensure the property is recorded at its fair value, net of estimated costs to sell. Any fair value adjustments subsequent to acquisition are charged or credited to earnings. The initial and subsequent evaluations are performed by officers in the Special Credits group, which reports to the Chief Credit Officer. The REASD obtains appraisals from third-parties for OREO and performs internal evaluations. If an appraisal is obtained from a third-party, the REASD reviews the appraisal to evaluate the adequacy of the appraisal report, including its scope, methods, accuracy, and reasonableness.
The following tables set forth information related to the Company’s assets that were measured using fair value estimates on a nonrecurring basis during the current and prior year quarterly periods:
 
 
Fair value at
September 30, 2016
 
Fair Value Measurements at Reporting Date Using
 
Losses During the Three Months Ended
September 30, 2016
 
Losses During the Nine Months Ended
September 30, 2016
 
 
Level 1
 
Level 2
 
Level 3
 
 
 
(in thousands)
Impaired loans
 
$
2,304

 
$
—

 
$
—

 
$
2,304

 
$
(647
)
 
$
(3,285
)
OREO
 
335

 
—

 
—

 
335

 
(14
)
 
(14
)
 
 
$
2,639

 
$
—

 
$
—

 
$
2,639

 
$
(661
)
 
$
(3,299
)
 
 
Fair value at
September 30, 2015
 
Fair Value Measurements at Reporting Date Using
 
Losses During the Three Months Ended
September 30, 2015
 
Losses During the Nine Months Ended September 30, 2015
 
 
Level 1
 
Level 2
 
Level 3
 
 
 
(in thousands)
Impaired loans
 
$
350

 
$
—

 
$
—

 
$
350

 
$
(1,012
)
 
$
(1,012
)
OREO
 
3,286

 
—

 
—

 
3,286

 
(646
)
 
(662
)
 
 
$
3,636

 
$
—

 
$
—

 
$
3,636

 
$
(1,658
)
 
$
(1,674
)

The losses on impaired loans disclosed above represent the amount of the specific reserve and/or charge-offs during the period applicable to loans held at period end. The amount of the specific reserve is included in the allowance for loan and lease losses. The losses on OREO disclosed above represent the write-downs taken at foreclosure that were charged to the allowance for loan and lease losses, as well as subsequent changes in any valuation allowances from updated appraisals that were recorded to earnings.
Quantitative information about Level 3 fair value measurements
The range and weighted-average of the significant unobservable inputs used to fair value our Level 3 nonrecurring assets, along with the valuation techniques used, are shown in the following table:
 
 
Fair value at
September 30, 2016
 
Valuation Technique
 
Unobservable Input
 
Range (Weighted Average) (1)
 
 
(dollars in thousands)
Impaired loans - collateral-dependent (3)
 
$
943

 
Fair Market Value of Collateral
 
Adjustment to Stated Value
 
N/A (2)
Impaired loans - other
 
$
1,361

 
Discounted Cash Flow
 
Discount Rate
 
2.85% - 6.50% (3.85%)
OREO
 
$
335

 
Fair Market Value of Collateral
 
Adjustment to Appraisal Value
 
N/A (2)
(1) Discount rate used in discounted cash flow valuation.
(2) Quantitative disclosures are not provided for collateral-dependent impaired loans and OREO because there were no adjustments made to the appraisal values or stated values during the current period.
(3) Collateral consists of fixed assets and accounts receivable.

 
 
Fair value at
September 30, 2015
 
Valuation Technique
 
Unobservable Input
 
Range (Weighted Average) (1)
 
 
(dollars in thousands)
Impaired loans
 
$
350

 
Fair Market Value of Collateral
 
Adjustment to Appraisal Value
 
N/A (2)
OREO
 
$
3,286

 
Fair Market Value of Collateral
 
Adjustment to Appraisal Value
 
N/A (2)
(1) Discount applied to appraisal value, letter of intent to purchase, or stated value (in the case of accounts receivable, inventory and equipment).
(2) Quantitative disclosures are not provided for impaired loans and OREO because there were no adjustments made to the appraisal value during the current period.
Fair value of financial instruments
Because broadly traded markets do not exist for most of the Company’s financial instruments, the fair value calculations attempt to incorporate the effect of current market conditions at a specific time. These determinations are subjective in nature, involve uncertainties and matters of significant judgment and do not include tax ramifications; therefore, the results cannot be determined with precision, substantiated by comparison to independent markets and may not be realized in an actual sale or immediate settlement of the instruments. There may be inherent weaknesses in any calculation technique, and changes in the underlying assumptions used, including discount rates and estimates of future cash flows, could significantly affect the results. For all of these reasons, the aggregation of the fair value calculations presented herein do not represent, and should not be construed to represent, the underlying value of the Company.
The following methods and assumptions were used to estimate the fair value of each class of financial instruments for which it is practicable to estimate that value:
Cash and due from banks and interest-earning deposits with banks—The fair value of financial instruments that are short-term or reprice frequently and that have little or no risk are considered to have a fair value that approximates carrying value (Level 1).
Securities available for sale—Securities at fair value, other than U.S. Treasury Notes, are priced using a combination of market activity, industry recognized information sources, yield curves, discounted cash flow models and other factors (Level 2). U.S. Treasury Notes are priced using quotes in active markets (Level 1).
Federal Home Loan Bank stock—The fair value is based upon the par value of the stock which equates to its carrying value (Level 2).
Loans held for sale—The carrying amount of loans held for sale approximates their fair values due to the short period of time between the origination and sale dates (Level 2).
Loans—Loans are not recorded at fair value on a recurring basis. Nonrecurring fair value adjustments are periodically recorded on impaired loans that are measured for impairment based on the fair value of collateral. For most performing loans, fair value is estimated using expected duration and lending rates that would have been offered on September 30, 2016 or December 31, 2015, for loans which mirror the attributes of the loans with similar rate structures and average maturities. The fair values resulting from these calculations are reduced by an amount representing the change in estimated fair value attributable to changes in borrowers’ credit quality since the loans were originated. For nonperforming loans, fair value is estimated by applying a valuation discount based upon loan sales data from the FDIC. For PCI loans, fair value is estimated by discounting the expected future cash flows using a lending rate that would have been offered on September 30, 2016 (Level 3).
FDIC loss-sharing asset —The fair value of the FDIC loss-sharing asset is estimated based on discounting the expected future cash flows using an estimated market rate (Level 3).
Interest rate contracts—Interest rate swap positions are valued in discounted cash flow models, which use readily observable market parameters as their basis (Level 2).
Deposits—For deposits with no contractual maturity, the fair value is equal to the carrying value (Level 1). The fair value of fixed maturity deposits is based on discounted cash flows using the difference between the deposit rate and current market rates for deposits of similar remaining maturities (Level 2).
FHLB advances—The fair value of FHLB advances is estimated based on discounting the future cash flows using the market rate currently offered (Level 2).
Repurchase Agreements—The fair value of term repurchase agreements is estimated based on discounting the future cash flows using the market rate currently offered. The carrying amount of sweep repurchase agreements approximates their fair values due to the short period of time between repricing dates (Level 2).
Other Financial Instruments—The majority of our commitments to extend credit and standby letters of credit carry current market interest rates if converted to loans, as such, carrying value is assumed to equal fair value.
The following tables summarize carrying amounts and estimated fair values of selected financial instruments as well as assumptions used by the Company in estimating fair value at September 30, 2016 and December 31, 2015:
 
 
September 30, 2016
 
 
Carrying
Amount
 
Fair
Value
 
Level 1
 
Level 2
 
Level 3
 
 
(in thousands)
Assets
 
 
 
 
 
 
 
 
 
 
Cash and due from banks
 
$
180,839

 
$
180,839

 
$
180,839

 
$
—

 
$
—

Interest-earning deposits with banks
 
11,225

 
11,225

 
11,225

 
—

 
—

Securities available for sale
 
2,360,084

 
2,360,084

 
548

 
2,359,536

 
—

FHLB stock
 
12,640

 
12,640

 
—

 
12,640

 
—

Loans held for sale
 
3,361

 
3,361

 
—

 
3,361

 
—

Loans
 
6,189,493

 
6,274,917

 
—

 
—

 
6,274,917

FDIC loss-sharing asset
 
3,592

 
594

 
—

 
—

 
594

Interest rate contracts
 
19,803

 
19,803

 
—

 
19,803

 
—

Liabilities
 
 
 
 
 
 
 
 
 
 
Deposits
 
$
8,057,816

 
$
8,054,970

 
$
7,645,310

 
$
409,660

 
$
—

FHLB advances
 
66,502

 
67,826

 
—

 
67,826

 
—

Repurchase agreements
 
69,189

 
69,543

 
—

 
69,543

 
—

Interest rate contracts
 
19,841

 
19,841

 
—

 
19,841

 
—


 
 
December 31, 2015
 
 
Carrying
Amount
 
Fair
Value
 
Level 1
 
Level 2
 
Level 3
 
 
(in thousands)
Assets
 
 
 
 
 
 
 
 
 
 
Cash and due from banks
 
$
166,929

 
$
166,929

 
$
166,929

 
$
—

 
$
—

Interest-earning deposits with banks
 
8,373

 
8,373

 
8,373

 
—

 
—

Securities available for sale
 
2,157,694

 
2,157,694

 
20,137

 
2,137,557

 
—

FHLB stock
 
12,722

 
12,722

 
—

 
12,722

 
—

Loans held for sale
 
4,509

 
4,509

 
—

 
4,509

 
—

Loans
 
5,746,855

 
5,752,423

 
—

 
—

 
5,752,423

FDIC loss-sharing asset
 
6,568

 
921

 
—

 
—

 
921

Interest rate contracts
 
12,438

 
12,438

 
—

 
12,438

 
—

Liabilities
 
 
 
 
 
 
 
 
 
 
Deposits
 
$
7,438,829

 
$
7,434,787

 
$
6,979,924

 
$
454,863

 
$
—

FHLB advances
 
68,531

 
69,176

 
—

 
69,176

 
—

Repurchase agreements
 
99,699

 
100,346

 
—

 
100,346

 
—

Interest rate contracts
 
12,478

 
12,478

 
—

 
12,478

 
—
v3.5.0.2
Earnings per Common Share
 9 Months Ended
Sep. 30, 2016
Earnings Per Share [Abstract]  
Earnings Per Common Share
Earnings per Common Share
The Company applies the two-class method of computing basic and diluted EPS. Under the two-class method, EPS is determined for each class of common stock and participating security according to dividends declared and participation rights in undistributed earnings. The Company issues restricted shares under share-based compensation plans and preferred shares which qualify as participating securities.
The following table sets forth the computation of basic and diluted earnings per share for the three and nine months ended September 30, 2016 and 2015:
 
 
Three Months Ended
 
Nine Months Ended
 
 
September 30,
 
September 30,
 
 
2016
 
2015
 
2016
 
2015
 
 
(in thousands except per share)
Basic EPS:
 
 
 
 
 
 
 
 
Net income
 
$
27,484

 
$
25,780

 
$
74,148

 
$
72,087

Less: Earnings allocated to participating securities:
 
 
 
 
 
 
 
 
Preferred shares
 
48

 
45

 
131

 
127

Nonvested restricted shares
 
378

 
296

 
953

 
772

Earnings allocated to common shareholders
 
$
27,058

 
$
25,439

 
$
73,064

 
$
71,188

Weighted average common shares outstanding
 
57,215

 
57,051

 
57,173

 
57,007

Basic earnings per common share
 
$
0.47

 
$
0.45

 
$
1.28

 
$
1.25

Diluted EPS:
 
 
 
 
 
 
 
 
Earnings allocated to common shareholders (1)
 
$
27,058

 
$
25,439

 
$
73,064

 
$
71,188

Weighted average common shares outstanding
 
57,215

 
57,051

 
57,173

 
57,007

Dilutive effect of equity awards
 
10

 
13

 
10

 
14

Weighted average diluted common shares outstanding
 
57,225

 
57,064

 
57,183

 
57,021

Diluted earnings per common share
 
$
0.47

 
$
0.45

 
$
1.28

 
$
1.25

Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive
 
15

 
29

 
20

 
40


__________
(1)
Earnings allocated to common shareholders for basic and diluted EPS may differ under the two-class method as a result of adding common stock equivalents for options and warrants to dilutive shares outstanding, which alters the ratio used to allocate earnings to common shareholders and participating securities for the purposes of calculating diluted EPS.
v3.5.0.2
Securities (Tables)
 9 Months Ended
Sep. 30, 2016
Available-for-sale Securities [Abstract]  
Securities Available for Sale
The following table summarizes the amortized cost, gross unrealized gains and losses and the resulting fair value of securities available for sale:
 
 
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Fair Value
 
 
(in thousands)
September 30, 2016
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations
 
$
1,498,158

 
$
17,148

 
$
(2,382
)
 
$
1,512,924

State and municipal securities
 
487,308

 
16,192

 
(382
)
 
503,118

U.S. government agency and government-sponsored enterprise securities
 
333,423

 
5,009

 
(140
)
 
338,292

U.S. government securities
 
548

 
—

 
—

 
548

Other securities
 
5,284

 
64

 
(146
)
 
5,202

Total
 
$
2,324,721

 
$
38,413

 
$
(3,050
)
 
$
2,360,084

December 31, 2015
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations
 
$
1,296,955

 
$
4,525

 
$
(14,991
)
 
$
1,286,489

State and municipal securities
 
480,417

 
12,690

 
(938
)
 
492,169

U.S. government agency and government-sponsored enterprise securities
 
354,515

 
1,113

 
(1,846
)
 
353,782

U.S. government securities
 
20,439

 
—

 
(302
)
 
20,137

Other securities
 
5,284

 
24

 
(191
)
 
5,117

Total
 
$
2,157,610

 
$
18,352

 
$
(18,268
)
 
$
2,157,694
Schedule of gross realized gains and losses on sales and calls of securities available for sale
The following table provides the gross realized gains and losses on the sales of securities for the periods indicated:
 
 
Three Months Ended
 
Nine Months Ended
 
 
September 30,
 
September 30,
 
 
2016
 
2015
 
2016
 
2015
 
 
(in thousands)
Gross realized gains
 
$
572

 
$
236

 
$
1,174

 
$
1,310

Gross realized losses
 
—

 
—

 
—

 
(10
)
Net realized gains
 
$
572

 
$
236

 
$
1,174

 
$
1,300
Schedule of Contractual Maturities of Investment Securities Available for Sale
The scheduled contractual maturities of investment securities available for sale at September 30, 2016 are presented as follows:
 
 
September 30, 2016
 
 
Amortized Cost
 
Fair Value
 
 
(in thousands)
Due within one year
 
$
28,765

 
$
28,874

Due after one year through five years
 
484,206

 
493,479

Due after five years through ten years
 
688,715

 
703,388

Due after ten years
 
1,117,751

 
1,129,141

Other securities with no stated maturity
 
5,284

 
5,202

Total investment securities available-for-sale
 
$
2,324,721

 
$
2,360,084
Carrying Value of Securities Pledged As Collateral
The following table summarizes the carrying value of securities pledged as collateral to secure public deposits, borrowings and other purposes as permitted or required by law:
 
 
September 30, 2016
 
 
(in thousands)
Washington and Oregon State to secure public deposits
 
$
235,931

Federal Reserve Bank to secure borrowings
 
40,877

Other securities pledged
 
147,336

Total securities pledged as collateral
 
$
424,144
Summary of Gross Unrealized Losses and Fair Value of the Investments with Unrealized Losses
The following table shows the gross unrealized losses and fair value of the Company’s investments with unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at September 30, 2016 and December 31, 2015:
 
 
Less than 12 Months
 
12 Months or More
 
Total
 
 
Fair
Value
 
Unrealized
Losses
 
Fair
Value
 
Unrealized
Losses
 
Fair
Value
 
Unrealized
Losses
 
 
(in thousands)
September 30, 2016
 
 
 
 
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations
 
$
176,508

 
$
(548
)
 
$
163,859

 
$
(1,834
)
 
$
340,367

 
$
(2,382
)
State and municipal securities
 
35,915

 
(337
)
 
3,489

 
(45
)
 
39,404

 
(382
)
U.S. government agency and government-sponsored enterprise securities
 
22,115

 
(140
)
 
—

 
—

 
22,115

 
(140
)
Other securities
 
—

 
—

 
2,810

 
(146
)
 
2,810

 
(146
)
Total
 
$
234,538

 
$
(1,025
)
 
$
170,158

 
$
(2,025
)
 
$
404,696

 
$
(3,050
)
 
 
 
 
 
 
 
 
 
 
 
 
 
December 31, 2015
 
 
 
 
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations
 
$
664,509

 
$
(7,610
)
 
$
214,325

 
$
(7,381
)
 
$
878,834

 
$
(14,991
)
State and municipal securities
 
48,261

 
(358
)
 
31,383

 
(580
)
 
79,644

 
(938
)
U.S. government agency and government-sponsored enterprise securities
 
193,400

 
(1,128
)
 
40,034

 
(718
)
 
233,434

 
(1,846
)
U.S. government securities
 
10,343

 
(136
)
 
9,794

 
(166
)
 
20,137

 
(302
)
Other securities
 
2,300

 
(15
)
 
2,780

 
(176
)
 
5,080

 
(191
)
Total
 
$
918,813

 
$
(9,247
)
 
$
298,316

 
$
(9,021
)
 
$
1,217,129

 
$
(18,268
)
v3.5.0.2
Loans (Tables)
 9 Months Ended
Sep. 30, 2016
Financing Receivable, Recorded Investment [Line Items]  
Analysis of Loan Portfolio by Major Types of Loans
The following is an analysis of the loan portfolio by segment (net of unearned income):
 
 
September 30, 2016
 
December 31, 2015
 
 
Loans, excluding PCI loans
 
PCI Loans
 
Total
 
Loans, excluding PCI loans
 
PCI Loans
 
Total
 
 
(in thousands)
Commercial business
 
$
2,630,017

 
$
22,558

 
$
2,652,575

 
$
2,362,575

 
$
34,848

 
$
2,397,423

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
168,511

 
19,378

 
187,889

 
176,295

 
23,938

 
200,233

Commercial and multifamily residential
 
2,686,783

 
92,617

 
2,779,400

 
2,491,736

 
99,389

 
2,591,125

Total real estate
 
2,855,294

 
111,995

 
2,967,289

 
2,668,031

 
123,327

 
2,791,358

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
130,163

 
867

 
131,030

 
135,874

 
2,278

 
138,152

Commercial and multifamily residential
 
202,014

 
1,583

 
203,597

 
167,413

 
1,630

 
169,043

Total real estate construction
 
332,177

 
2,450

 
334,627

 
303,287

 
3,908

 
307,195

Consumer
 
325,741

 
15,761

 
341,502

 
342,601

 
18,823

 
361,424

Less: Net unearned income
 
(36,236
)
 
—

 
(36,236
)
 
(42,373
)
 
—

 
(42,373
)
Total loans, net of unearned income
 
6,106,993

 
152,764

 
6,259,757

 
5,634,121

 
180,906

 
5,815,027

Less: Allowance for loan and lease losses
 
(58,762
)
 
(11,502
)
 
(70,264
)
 
(54,446
)
 
(13,726
)
 
(68,172
)
Total loans, net
 
$
6,048,231

 
$
141,262

 
$
6,189,493

 
$
5,579,675

 
$
167,180

 
$
5,746,855

Loans held for sale
 
$
3,361

 
$
—

 
$
3,361

 
$
4,509

 
$
—

 
$
4,509
Loans, Excluding Purchased Credit Impaired Loans [Member]  
Financing Receivable, Recorded Investment [Line Items]  
Analysis of Nonaccrual Loans
The following is an analysis of nonaccrual loans as of September 30, 2016 and December 31, 2015:
 
 
September 30, 2016
 
December 31, 2015
 
 
Recorded
Investment
Nonaccrual
Loans
 
Unpaid Principal
Balance
Nonaccrual
Loans
 
Recorded
Investment
Nonaccrual
Loans
 
Unpaid Principal
Balance
Nonaccrual
Loans
 
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
Secured
 
$
9,466

 
$
19,689

 
$
9,395

 
$
15,688

Unsecured
 
36

 
216

 
42

 
256

Real estate:
 
 
 
 
 
 
 
 
One-to-four family residential
 
579

 
1,303

 
820

 
1,866

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
Commercial land
 
934

 
922

 
349

 
332

Income property
 
1,957

 
2,177

 
2,843

 
3,124

Owner occupied
 
4,161

 
6,842

 
6,321

 
8,943

Real estate construction:
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
Land and acquisition
 
—

 
—

 
362

 
385

Residential construction
 
461

 
461

 
566

 
679

Consumer
 
3,772

 
4,042

 
766

 
990

Total
 
$
21,366

 
$
35,652

 
$
21,464

 
$
32,263
Analysis of the Aged Loan Portfolio
The following is an aging of the recorded investment of the loan portfolio as of September 30, 2016 and December 31, 2015:
 
 
Current
Loans
 
30 - 59
Days
Past Due
 
60 - 89
Days
Past Due
 
Greater
than 90
Days Past
Due
 
Total
Past Due
 
Nonaccrual
Loans
 
Total Loans
September 30, 2016
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
2,515,042

 
$
2,542

 
$
609

 
$
—

 
$
3,151

 
$
9,466

 
$
2,527,659

Unsecured
 
97,496

 
5

 
—

 
—

 
5

 
36

 
97,537

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
164,927

 
400

 
34

 
—

 
434

 
579

 
165,940

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
238,887

 
—

 
200

 
—

 
200

 
934

 
240,021

Income property
 
1,376,735

 
90

 
—

 
—

 
90

 
1,957

 
1,378,782

Owner occupied
 
1,043,376

 
58

 
—

 
—

 
58

 
4,161

 
1,047,595

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
11,933

 
119

 
—

 
—

 
119

 
—

 
12,052

Residential construction
 
116,327

 
213

 
305

 
—

 
518

 
461

 
117,306

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
89,373

 
—

 
—

 
—

 
—

 
—

 
89,373

Owner occupied
 
110,853

 
—

 
—

 
—

 
—

 
—

 
110,853

Consumer
 
314,581

 
649

 
873

 
—

 
1,522

 
3,772

 
319,875

Total
 
$
6,079,530

 
$
4,076

 
$
2,021

 
$
—

 
$
6,097

 
$
21,366

 
$
6,106,993

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Current
Loans
 
30 - 59
Days
Past Due
 
60 - 89
Days
Past Due
 
Greater
than 90
Days Past
Due
 
Total
Past Due
 
Nonaccrual
Loans
 
Total Loans
December 31, 2015
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
2,241,069

 
$
11,611

 
$
617

 
$
—

 
$
12,228

 
$
9,395

 
$
2,262,692

Unsecured
 
94,867

 
39

 
—

 
—

 
39

 
42

 
94,948

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
170,913

 
1,637

 
66

 
—

 
1,703

 
820

 
173,436

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
212,740

 
69

 
—

 
—

 
69

 
349

 
213,158

Income property
 
1,305,502

 
1,750

 
684

 
—

 
2,434

 
2,843

 
1,310,779

Owner occupied
 
939,396

 
599

 
—

 
—

 
599

 
6,321

 
946,316

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
14,388

 
—

 
—

 
—

 
—

 
362

 
14,750

Residential construction
 
119,809

 
—

 
—

 
—

 
—

 
566

 
120,375

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
83,634

 
—

 
—

 
—

 
—

 
—

 
83,634

Owner occupied
 
81,671

 
—

 
—

 
—

 
—

 
—

 
81,671

Consumer
 
328,219

 
2,597

 
780

 
—

 
3,377

 
766

 
332,362

Total
 
$
5,592,208

 
$
18,302

 
$
2,147

 
$
—

 
$
20,449

 
$
21,464

 
$
5,634,121
Impaired Financing Receivables
The following is an analysis of impaired loans as of September 30, 2016 and December 31, 2015:
 
 
Recorded Investment
of Loans
Collectively Measured
for Contingency
Provision
 
Recorded Investment
of Loans
Individually
Measured for
Specific
Impairment
 
Impaired Loans With
Recorded Allowance
 
Impaired Loans Without
Recorded Allowance
 
 
Recorded
Investment
 
Unpaid
Principal
Balance
 
Related
Allowance
 
Recorded
Investment
 
Unpaid
Principal
Balance
September 30, 2016
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
2,520,876

 
$
6,783

 
$
1,208

 
$
1,277

 
$
873

 
$
5,575

 
$
11,840

Unsecured
 
97,537

 
—

 
—

 
—

 
—

 
—

 
—

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
165,394

 
546

 
358

 
591

 
353

 
188

 
402

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
239,313

 
708

 
—

 
—

 
—

 
708

 
687

Income property
 
1,376,349

 
2,433

 
546

 
551

 
28

 
1,887

 
2,124

Owner occupied
 
1,043,849

 
3,746

 
—

 
—

 
—

 
3,746

 
6,340

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
11,950

 
102

 
—

 
—

 
—

 
102

 
102

Residential construction
 
116,970

 
336

 
—

 
—

 
—

 
336

 
336

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
89,373

 
—

 
—

 
—

 
—

 
—

 
—

Owner occupied
 
110,853

 
—

 
—

 
—

 
—

 
—

 
—

Consumer
 
316,281

 
3,594

 
2,976

 
3,010

 
46

 
618

 
700

Total
 
$
6,088,745

 
$
18,248

 
$
5,088

 
$
5,429

 
$
1,300

 
$
13,160

 
$
22,531

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Recorded Investment
of Loans
Collectively Measured
for Contingency
Provision
 
Recorded Investment
of Loans
Individually
Measured for
Specific
Impairment
 
Impaired Loans With
Recorded Allowance
 
Impaired Loans Without
Recorded Allowance
 
 
 
 
Recorded
Investment
 
Unpaid
Principal
Balance
 
Related
Allowance
 
Recorded
Investment
 
Unpaid
Principal
Balance
December 31, 2015
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
2,257,168

 
$
5,524

 
$
690

 
$
718

 
$
321

 
$
4,834

 
$
6,455

Unsecured
 
94,948

 
—

 
—

 
—

 
—

 
—

 
—

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
172,150

 
1,286

 
314

 
339

 
314

 
972

 
1,397

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
213,158

 
—

 
—

 
—

 
—

 
—

 
—

Income property
 
1,308,673

 
2,106

 
—

 
—

 
—

 
2,106

 
2,311

Owner occupied
 
940,261

 
6,055

 
—

 
—

 
—

 
6,055

 
8,528

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
14,283

 
467

 
—

 
—

 
—

 
467

 
490

Residential construction
 
119,813

 
562

 
335

 
335

 
3

 
227

 
227

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
83,634

 
—

 
—

 
—

 
—

 
—

 
—

Owner occupied
 
81,671

 
—

 
—

 
—

 
—

 
—

 
—

Consumer
 
332,282

 
80

 
15

 
15

 
15

 
65

 
139

Total
 
$
5,618,041

 
$
16,080

 
$
1,354

 
$
1,407

 
$
653

 
$
14,726

 
$
19,547

The following table provides additional information on impaired loans for the three and nine month periods indicated:
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
 
2016
 
2015
 
2016
 
2015
 
 
Average Recorded
Investment
Impaired Loans 
 
Interest Recognized
on
Impaired Loans
 
Average Recorded
Investment
Impaired Loans 
 
Interest Recognized
on
Impaired Loans
 
Average Recorded
Investment
Impaired Loans 
 
Interest Recognized
on
Impaired Loans
 
Average Recorded
Investment
Impaired Loans 
 
Interest Recognized
on
Impaired Loans
 
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
6,909

 
$
15

 
$
6,507

 
$
3

 
$
9,506

 
$
48

 
$
8,602

 
$
10

Unsecured
 
—

 
—

 
—

 
—

 
—

 
—

 
1

 
—

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
617

 
5

 
3,315

 
11

 
796

 
8

 
3,238

 
35

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
708

 
—

 
—

 
—

 
354

 
—

 
118

 
—

Income property
 
1,939

 
8

 
2,061

 
10

 
2,010

 
19

 
3,114

 
27

Owner occupied
 
4,486

 
—

 
6,665

 
65

 
5,001

 
—

 
7,302

 
533

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
103

 
1

 
825

 
1

 
245

 
4

 
685

 
4

Residential construction
 
449

 
—

 
893

 
—

 
506

 
—

 
670

 
—

Consumer
 
3,345

 
25

 
27

 
1

 
2,084

 
46

 
216

 
3

Total
 
$
18,556

 
$
54

 
$
20,293

 
$
91

 
$
20,502

 
$
125

 
$
23,946

 
$
612
Analysis of loans classified as Troubled Debt Restructurings (“TDR”)
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
 
2016
 
2015
 
2016
 
2015
 
 
Average Recorded
Investment
Impaired Loans 
 
Interest Recognized
on
Impaired Loans
 
Average Recorded
Investment
Impaired Loans 
 
Interest Recognized
on
Impaired Loans
 
Average Recorded
Investment
Impaired Loans 
 
Interest Recognized
on
Impaired Loans
 
Average Recorded
Investment
Impaired Loans 
 
Interest Recognized
on
Impaired Loans
 
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
6,909

 
$
15

 
$
6,507

 
$
3

 
$
9,506

 
$
48

 
$
8,602

 
$
10

Unsecured
 
—

 
—

 
—

 
—

 
—

 
—

 
1

 
—

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
617

 
5

 
3,315

 
11

 
796

 
8

 
3,238

 
35

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
708

 
—

 
—

 
—

 
354

 
—

 
118

 
—

Income property
 
1,939

 
8

 
2,061

 
10

 
2,010

 
19

 
3,114

 
27

Owner occupied
 
4,486

 
—

 
6,665

 
65

 
5,001

 
—

 
7,302

 
533

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
103

 
1

 
825

 
1

 
245

 
4

 
685

 
4

Residential construction
 
449

 
—

 
893

 
—

 
506

 
—

 
670

 
—

Consumer
 
3,345

 
25

 
27

 
1

 
2,084

 
46

 
216

 
3

Total
 
$
18,556

 
$
54

 
$
20,293

 
$
91

 
$
20,502

 
$
125

 
$
23,946

 
$
612

The following is an analysis of loans classified as troubled debt restructurings (“TDR”) during the three and nine months ended September 30, 2016 and 2015:
 
 
Three months ended September 30, 2016
 
Three months ended September 30, 2015
 
 
Number of TDR Modifications
 
Pre-Modification
Outstanding
Recorded
Investment
 
Post-Modification
Outstanding
Recorded
Investment
 
Number of TDR Modifications
 
Pre-Modification
Outstanding
Recorded
Investment
 
Post-Modification
Outstanding
Recorded
Investment
 
 
(dollars in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
2

 
$
90

 
$
90

 
4

 
$
2,903

 
$
2,903

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
1

 
85

 
85

 
—

 
—

 
—

Consumer
 
10

 
731

 
731

 
—

 
—

 
—

Total
 
13

 
$
906

 
$
906

 
4

 
$
2,903

 
$
2,903

 
 
Nine months ended September 30, 2016
 
Nine months ended September 30, 2015
 
 
Number of TDR Modifications
 
Pre-Modification
Outstanding
Recorded
Investment
 
Post-Modification
Outstanding
Recorded
Investment
 
Number of TDR Modifications
 
Pre-Modification
Outstanding
Recorded
Investment
 
Post-Modification
Outstanding
Recorded
Investment
 
 
(dollars in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
7

 
$
1,753

 
$
1,753

 
4

 
$
2,903

 
$
2,903

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
2

 
115

 
115

 
1

 
30

 
30

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Owner occupied
 
1

 
250

 
250

 
—

 
—

 
—

Consumer
 
28

 
3,442

 
3,442

 
—

 
—

 
—

Total
 
38

 
$
5,560

 
$
5,560

 
5

 
$
2,933

 
$
2,933
Purchased Credit Impaired Loans [Member]  
Financing Receivable, Recorded Investment [Line Items]  
Analysis of Loan Portfolio by Major Types of Loans
The following is an analysis of our PCI loans, net of related allowance for losses and remaining valuation discounts as of September 30, 2016 and December 31, 2015:
 
 
September 30, 2016
 
December 31, 2015
 
 
(in thousands)
Commercial business
 
$
24,436

 
$
38,784

Real estate:
 
 
 
 
One-to-four family residential
 
22,227

 
27,195

Commercial and multifamily residential
 
98,178

 
106,308

Total real estate
 
120,405

 
133,503

Real estate construction:
 
 
 
 
One-to-four family residential
 
867

 
2,326

Commercial and multifamily residential
 
1,754

 
1,834

Total real estate construction
 
2,621

 
4,160

Consumer
 
17,632

 
20,903

Subtotal of PCI loans
 
165,094

 
197,350

Less:
 
 
 
 
Valuation discount resulting from acquisition accounting
 
12,330

 
16,444

Allowance for loan losses
 
11,502

 
13,726

PCI loans, net of allowance for loan losses
 
$
141,262

 
$
167,180
Changes in Accretable Yield for Acquired Loans
The following table shows the changes in accretable yield for PCI loans for the three and nine months ended September 30, 2016 and 2015:
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
 
2016
 
2015
 
2016
 
2015
 
 
(in thousands)
Balance at beginning of period
 
$
52,909

 
$
67,283

 
$
58,981

 
$
73,849

Accretion
 
(4,902
)
 
(5,049
)
 
(12,905
)
 
(17,105
)
Disposals
 
(178
)
 
256

 
(157
)
 
(1,796
)
Reclassifications from nonaccretable difference
 
1,034

 
350

 
2,944

 
7,892

Balance at end of period
 
$
48,863

 
$
62,840

 
$
48,863

 
$
62,840
v3.5.0.2
Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Tables)
 9 Months Ended
Sep. 30, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]  
Allowance for Credit Losses on Financing Receivables
The following tables show a detailed analysis of the allowance for the three and nine months ended September 30, 2016 and 2015:
 
 
 
Beginning
Balance
 
Charge-offs
 
Recoveries
 
Provision (Recovery)
 
Ending
Balance
 
Specific
Reserve
 
General
Allocation
Three months ended September 30, 2016
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
31,808

 
$
(2,128
)
 
$
787

 
$
2,008

 
$
32,475

 
$
873

 
$
31,602

Unsecured
 
1,265

 
(31
)
 
67

 
(128
)
 
1,173

 
—

 
1,173

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
675

 
—

 
81

 
221

 
977

 
353

 
624

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
1,422

 
—

 
—

 
92

 
1,514

 
—

 
1,514

Income property
 
8,046

 
—

 
10

 
149

 
8,205

 
28

 
8,177

Owner occupied
 
6,336

 
—

 
10

 
487

 
6,833

 
—

 
6,833

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
587

 
—

 
2

 
(134
)
 
455

 
—

 
455

Residential construction
 
1,376

 
—

 
19

 
(393
)
 
1,002

 
—

 
1,002

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
904

 
—

 
107

 
(480
)
 
531

 
—

 
531

Owner occupied
 
1,384

 
—

 
—

 
57

 
1,441

 
—

 
1,441

Consumer
 
3,559

 
(383
)
 
399

 
168

 
3,743

 
46

 
3,697

Purchased credit impaired
 
11,781

 
(2,062
)
 
2,216

 
(433
)
 
11,502

 
—

 
11,502

Unallocated
 
161

 
—

 
—

 
252

 
413

 
—

 
413

Total
 
$
69,304

 
$
(4,604
)
 
$
3,698

 
$
1,866

 
$
70,264

 
$
1,300

 
$
68,964

 
 
Beginning
Balance
 
Charge-offs
 
Recoveries
 
Provision (Recovery)
 
Ending
Balance
 
Specific
Reserve
 
General
Allocation
Nine months ended September 30, 2016
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
32,321

 
$
(8,798
)
 
$
2,126

 
$
6,826

 
$
32,475

 
$
873

 
$
31,602

Unsecured
 
1,299

 
(75
)
 
143

 
(194
)
 
1,173

 
—

 
1,173

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
916

 
(35
)
 
142

 
(46
)
 
977

 
353

 
624

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
1,178

 
(26
)
 
2

 
360

 
1,514

 
—

 
1,514

Income property
 
6,616

 
—

 
191

 
1,398

 
8,205

 
28

 
8,177

Owner occupied
 
5,550

 
—

 
26

 
1,257

 
6,833

 
—

 
6,833

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
339

 
—

 
55

 
61

 
455

 
—

 
455

Residential construction
 
733

 
—

 
225

 
44

 
1,002

 
—

 
1,002

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
388

 
—

 
109

 
34

 
531

 
—

 
531

Owner occupied
 
1,006

 
—

 
—

 
435

 
1,441

 
—

 
1,441

Consumer
 
3,531

 
(983
)
 
765

 
430

 
3,743

 
46

 
3,697

Purchased credit impaired
 
13,726

 
(7,826
)
 
5,291

 
311

 
11,502

 
—

 
11,502

Unallocated
 
569

 
—

 
—

 
(156
)
 
413

 
—

 
413

Total
 
$
68,172

 
$
(17,743
)
 
$
9,075

 
$
10,760

 
$
70,264

 
$
1,300

 
$
68,964


 
 
Beginning
Balance
 
Charge-offs
 
Recoveries
 
Provision (Recovery)
 
Ending
Balance
 
Specific
Reserve
 
General
Allocation
Three months ended September 30, 2015
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
27,708

 
$
(2,439
)
 
$
530

 
$
5,189

 
$
30,988

 
$
1,020

 
$
29,968

Unsecured
 
857

 
(131
)
 
93

 
471

 
1,290

 
—

 
1,290

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
1,355

 
—

 
261

 
(420
)
 
1,196

 
84

 
1,112

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
1,581

 
—

 
130

 
123

 
1,834

 
—

 
1,834

Income property
 
8,197

 
(83
)
 
273

 
22

 
8,409

 
—

 
8,409

Owner occupied
 
5,801

 
(115
)
 
14

 
473

 
6,173

 
17

 
6,156

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
497

 
—

 
98

 
(206
)
 
389

 
64

 
325

Residential construction
 
958

 
—

 
7

 
(250
)
 
715

 
—

 
715

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
407

 
—

 
2

 
(68
)
 
341

 
—

 
341

Owner occupied
 
441

 
—

 
—

 
(31
)
 
410

 
—

 
410

Consumer
 
3,182

 
(311
)
 
297

 
49

 
3,217

 
14

 
3,203

Purchased credit impaired
 
16,174

 
(3,198
)
 
1,533

 
(519
)
 
13,990

 
—

 
13,990

Unallocated
 
2,099

 
—

 
—

 
(2,002
)
 
97

 
—

 
97

Total
 
$
69,257

 
$
(6,277
)
 
$
3,238

 
$
2,831

 
$
69,049

 
$
1,199

 
$
67,850

 
 
Beginning
Balance
 
Charge-offs
 
Recoveries
 
Provision (Recovery)
 
Ending
Balance
 
Specific
Reserve
 
General
Allocation
Nine months ended September 30, 2015
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
25,923

 
$
(5,847
)
 
$
1,242

 
$
9,670

 
$
30,988

 
$
1,020

 
$
29,968

Unsecured
 
927

 
(235
)
 
208

 
390

 
1,290

 
—

 
1,290

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
2,281

 
(297
)
 
288

 
(1,076
)
 
1,196

 
84

 
1,112

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
799

 
—

 
130

 
905

 
1,834

 
—

 
1,834

Income property
 
9,159

 
(126
)
 
3,532

 
(4,156
)
 
8,409

 
—

 
8,409

Owner occupied
 
5,007

 
(115
)
 
36

 
1,245

 
6,173

 
17

 
6,156

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
1,197

 
—

 
101

 
(909
)
 
389

 
64

 
325

Residential construction
 
1,860

 
—

 
40

 
(1,185
)
 
715

 
—

 
715

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
622

 
—

 
7

 
(288
)
 
341

 
—

 
341

Owner occupied
 
434

 
—

 
—

 
(24
)
 
410

 
—

 
410

Consumer
 
3,180

 
(1,521
)
 
707

 
851

 
3,217

 
14

 
3,203

Purchased credit impaired
 
16,336

 
(10,174
)
 
5,262

 
2,566

 
13,990

 
—

 
13,990

Unallocated
 
1,844

 
—

 
—

 
(1,747
)
 
97

 
—

 
97

Total
 
$
69,569

 
$
(18,315
)
 
$
11,553

 
$
6,242

 
$
69,049

 
$
1,199

 
$
67,850
Changes in the Allowance for Unfunded Commitments and Letters of Credit
Changes in the allowance for unfunded commitments and letters of credit, a component of “Other liabilities” in the consolidated balance sheet, are summarized as follows:
 
 
Three Months Ended
 
Nine Months Ended
 
 
September 30,
 
September 30,
 
 
2016
 
2015
 
2016
 
2015
 
 
(in thousands)
Balance at beginning of period
 
$
2,780

 
$
2,930

 
$
2,930

 
$
2,655

Net changes in the allowance for unfunded commitments and letters of credit
 
125

 
—

 
(25
)
 
275

Balance at end of period
 
$
2,905

 
$
2,930

 
$
2,905

 
$
2,930
Financing Receivable Credit Quality Indicators
The following is an analysis of the credit quality of our loan portfolio, excluding PCI loans, as of September 30, 2016 and December 31, 2015:
 
 
Pass
 
Special Mention
 
Substandard
 
Doubtful
 
Loss
 
Total
September 30, 2016
 
(in thousands)
Loans, excluding PCI loans:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
2,417,653

 
$
48,462

 
$
61,544

 
$
—

 
$
—

 
$
2,527,659

Unsecured
 
96,402

 
800

 
335

 
—

 
—

 
97,537

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
164,102

 
458

 
1,380

 
—

 
—

 
165,940

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
233,795

 
5,276

 
950

 
—

 
—

 
240,021

Income property
 
1,354,651

 
17,048

 
7,083

 
—

 
—

 
1,378,782

Owner occupied
 
1,027,356

 
5,745

 
14,494

 
—

 
—

 
1,047,595

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
12,052

 
—

 
—

 
—

 
—

 
12,052

Residential construction
 
116,187

 
—

 
1,119

 
—

 
—

 
117,306

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
89,373

 
—

 
—

 
—

 
—

 
89,373

Owner occupied
 
106,310

 
—

 
4,543

 
—

 
—

 
110,853

Consumer
 
312,602

 
—

 
7,273

 
—

 
—

 
319,875

Total
 
$
5,930,483

 
$
77,789

 
$
98,721

 
$
—

 
$
—

 
6,106,993

Less:
 
 
 
 
 
 
 
 
 
 
 
 
Allowance for loan and lease losses
 
58,762

Loans, excluding PCI loans, net
 
$
6,048,231

 
 
Pass
 
Special Mention
 
Substandard
 
Doubtful
 
Loss
 
Total
December 31, 2015
 
(in thousands)
Loans, excluding PCI loans:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
2,146,729

 
$
59,746

 
$
56,217

 
$
—

 
$
—

 
$
2,262,692

Unsecured
 
93,347

 
278

 
1,323

 
—

 
—

 
94,948

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
171,945

 
52

 
1,439

 
—

 
—

 
173,436

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
207,768

 
4,966

 
424

 
—

 
—

 
213,158

Income property
 
1,296,043

 
5,889

 
8,847

 
—

 
—

 
1,310,779

Owner occupied
 
918,986

 
9,668

 
17,662

 
—

 
—

 
946,316

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
14,388

 
—

 
362

 
—

 
—

 
14,750

Residential construction
 
119,243

 
—

 
1,132

 
—

 
—

 
120,375

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
83,634

 
—

 
—

 
—

 
—

 
83,634

Owner occupied
 
81,270

 
—

 
401

 
—

 
—

 
81,671

Consumer
 
328,286

 
—

 
4,076

 
—

 
—

 
332,362

Total
 
$
5,461,639

 
$
80,599

 
$
91,883

 
$
—

 
$
—

 
5,634,121

Less:
 
 
 
 
 
 
 
 
 
 
 
 
Allowance for loan and lease losses
 
54,446

Loans, excluding PCI loans, net
 
$
5,579,675


The following is an analysis of the credit quality of our PCI loan portfolio as of September 30, 2016 and December 31, 2015:
 
 
Pass
 
Special Mention
 
Substandard
 
Doubtful
 
Loss
 
Total
September 30, 2016
 
(in thousands)
PCI loans:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
21,420

 
$
94

 
$
2,191

 
$
—

 
$
—

 
$
23,705

Unsecured
 
731

 
—

 
—

 
—

 
—

 
731

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
20,996

 
—

 
1,231

 
—

 
—

 
22,227

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
7,745

 
—

 
392

 
—

 
—

 
8,137

Income property
 
31,481

 
—

 
2,445

 
—

 
—

 
33,926

Owner occupied
 
54,471

 
—

 
1,644

 
—

 
—

 
56,115

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
767

 
—

 
100

 
—

 
—

 
867

Residential construction
 
—

 
—

 
—

 
—

 
—

 
—

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
1,239

 
—

 
—

 
—

 
—

 
1,239

Owner occupied
 
515

 
—

 
—

 
—

 
—

 
515

Consumer
 
17,168

 
—

 
464

 
—

 
—

 
17,632

Total
 
$
156,533

 
$
94

 
$
8,467

 
$
—

 
$
—

 
165,094

Less:
 
 
 
 
 
 
 
 
 
 
 
 
Valuation discount resulting from acquisition accounting
 
12,330

Allowance for loan losses
 
11,502

PCI loans, net
 
$
141,262

 
 
Pass
 
Special Mention
 
Substandard
 
Doubtful
 
Loss
 
Total
December 31, 2015
 
(in thousands)
PCI loans:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
31,468

 
$
101

 
$
5,995

 
$
—

 
$
—

 
$
37,564

Unsecured
 
1,218

 
—

 
2

 
—

 
—

 
1,220

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
25,018

 
—

 
2,177

 
—

 
—

 
27,195

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
8,234

 
—

 
664

 
—

 
—

 
8,898

Income property
 
36,426

 
—

 
5,916

 
—

 
—

 
42,342

Owner occupied
 
53,071

 
261

 
1,736

 
—

 
—

 
55,068

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
1,086

 
—

 
479

 
—

 
—

 
1,565

Residential construction
 
427

 
—

 
334

 
—

 
—

 
761

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
1,303

 
—

 
—

 
—

 
—

 
1,303

Owner occupied
 
531

 
—

 
—

 
—

 
—

 
531

Consumer
 
20,122

 
—

 
781

 
—

 
—

 
20,903

Total
 
$
178,904

 
$
362

 
$
18,084

 
$
—

 
$
—

 
197,350

Less:
 
 
 
 
 
 
 
 
 
 
 
 
Valuation discount resulting from acquisition accounting
 
16,444

Allowance for loan losses
 
13,726

PCI loans, net
 
$
167,180
v3.5.0.2
Other Real Estate Owned (Tables)
 9 Months Ended
Sep. 30, 2016
Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]  
Summary of Other Real Estate Owned
The following tables set forth activity in OREO for the three and nine months ended September 30, 2016 and 2015:
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
 
2016
 
2015
 
2016
 
2015
 
 
(in thousands)
Balance, beginning of period
 
$
10,613

 
$
20,617

 
$
13,738

 
$
22,190

Transfers in
 
891

 
915

 
1,202

 
8,751

Valuation adjustments
 
(14
)
 
(664
)
 
(290
)
 
(1,457
)
Proceeds from sale of OREO property
 
(2,569
)
 
(1,675
)
 
(5,845
)
 
(13,283
)
Gain on sale of OREO, net
 
73

 
263

 
189

 
3,255

Balance, end of period
 
$
8,994

 
$
19,456

 
$
8,994

 
$
19,456
v3.5.0.2
Covered Assets and FDIC Loss-sharing Asset (Tables)
 9 Months Ended
Sep. 30, 2016
Covered Assets And FDIC Loss Sharing Asset [Line Items]  
FDIC Loss-sharing Asset
The following table shows a detailed analysis of the FDIC loss-sharing asset for the three and nine months ended September 30, 2016 and 2015:
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
 
2016
 
2015
 
2016
 
2015
 
 
(in thousands)
Balance at beginning of period
 
$
4,266

 
$
9,344

 
$
6,568

 
$
15,174

Adjustments not reflected in income:
 
 
 
 
 
 
 
 
Cash (received from) paid to the FDIC, net
 
20

 
799

 
(23
)
 
(2,723
)
FDIC reimbursable recoveries, net
 
(590
)
 
(362
)
 
(756
)
 
(1,326
)
Adjustments reflected in income:
 
 
 
 
 
 
 
 
Amortization, net
 
(315
)
 
(1,416
)
 
(2,530
)
 
(5,086
)
Loan impairment (recapture)
 
266

 
(119
)
 
393

 
1,413

Sale of other real estate
 
(49
)
 
(126
)
 
71

 
(753
)
Valuation adjustments of other real estate owned
 
—

 
25

 
(22
)
 
1,148

Other
 
(6
)
 
1

 
(109
)
 
299

Balance at end of period
 
$
3,592

 
$
8,146

 
$
3,592

 
$
8,146
Schedule of FDIC Loss-Sharing Agreements and Covered Assets [Table Text Block]
The following table presents information about the composition of the FDIC loss-sharing asset, the clawback liability, and the non-single family and the single family covered assets as of the date indicated:
 
 
September 30, 2016
 
 
Columbia River Bank
 
American Marine Bank
 
Summit Bank
 
First Heritage Bank
 
Total
 
 
(in thousands)
FDIC loss-sharing asset (liability)
 
$
349

 
$
1,959

 
$
1,577

 
$
(293
)
 
$
3,592

Clawback liability
 
$
3,474

 
$
1,280

 
$
—

 
$
708

 
$
5,462

Non-single family covered assets
 
$
61,040

 
$
9,366

 
$
6,700

 
$
12,145

 
$
89,251

Single family covered assets
 
$
6,110

 
$
18,563

 
$
5,077

 
$
1,645

 
$
31,395

 
 
 
 
 
 
 
 
 
 
 
Loss-sharing expiration dates:
 
 
 
 
 
 
 
 
 
 
Non-single family
 
Expired
 
Expired
 
Expired
 
Expired
 
 
Single family
 
First Quarter 2020
 
First Quarter 2020
 
Second Quarter 2021
 
Second Quarter 2021
 
 
Recovery-sharing expiration dates:
 
 
 
 
 
 
 
 
 
 
Non-single family
 
First Quarter 2018
 
First Quarter 2018
 
Second Quarter 2019
 
Second Quarter 2019
 
 
Single family
 
First Quarter 2020
 
First Quarter 2020
 
Second Quarter 2021
 
Second Quarter 2021
 
 
v3.5.0.2
Goodwill and Intangible Assets (Tables)
 9 Months Ended
Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill and Intangible Assets
The following table sets forth activity for goodwill and other intangible assets for the periods indicated:
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
 
2016
 
2015
 
2016
 
2015
 
 
(in thousands)
Goodwill
 
 
 
 
 
 
 
 
Goodwill at beginning of period
 
$
382,762

 
$
382,537

 
$
382,762

 
$
382,537

Provisional period adjustments
 
—

 
225

 
—

 
225

Total goodwill
 
$
382,762

 
$
382,762

 
$
382,762

 
$
382,762

Other intangible assets, net
 
 
 
 
 
 
 
 
Core deposit intangible:
 
 
 
 
 
 
 
 
Gross core deposit intangible balance at beginning of period
 
58,598

 
58,598

 
58,598

 
58,598

Accumulated amortization at beginning of period
 
(39,006
)
 
(32,593
)
 
(35,940
)
 
(29,058
)
Core deposit intangible, net at beginning of period
 
19,592

 
26,005

 
22,658

 
29,540

CDI current period amortization
 
(1,460
)
 
(1,695
)
 
(4,526
)
 
(5,230
)
Total core deposit intangible, net at end of period
 
18,132

 
24,310

 
18,132

 
24,310

Intangible assets not subject to amortization
 
919

 
919

 
919

 
919

Other intangible assets, net at end of period
 
19,051

 
25,229

 
19,051

 
25,229

Total goodwill and other intangible assets at end of period
 
$
401,813

 
$
407,991

 
$
401,813

 
$
407,991
Estimated Future Amortization Expense of Core Deposit Intangibles
The following table provides the estimated future amortization expense of core deposit intangibles for the remaining three months ending December 31, 2016 and the succeeding four years:
 
 
Amount
 
 
(in thousands)
Year ending December 31,
 
 
2016
 
$
1,419

2017
 
4,913

2018
 
3,855

2019
 
2,951

2020
 
2,048
v3.5.0.2
Derivatives and Balance Sheet Offsetting (Tables)
 9 Months Ended
Sep. 30, 2016
Derivative [Line Items]  
Balance Sheet Offsetting [Table Text Block]
The following tables show the gross interest rate swap agreements and repurchase agreements in the consolidated balance sheets and the respective collateral received or pledged in the form of other financial instruments, which are generally marketable securities. The collateral amounts in these tables are limited to the outstanding balances of the related asset or liability. Therefore, instances of overcollateralization are not shown.
 
Gross Amounts of Recognized Assets/Liabilities
 
Gross Amounts Offset in the Consolidated Balance Sheets
 
Net Amounts of Assets/Liabilities Presented in the Consolidated Balance Sheets
 
Gross Amounts Not Offset in the Consolidated Balance Sheets
 
 
 
 
Collateral Posted
 
Net Amount
September 30, 2016
(in thousands)
Assets
 
 
 
 
 
 
 
 
 
Interest rate contracts
$
19,803

 
$
—

 
$
19,803

 
$
—

 
$
19,803

Liabilities
 
 
 
 
 
 
 
 
 
Interest rate contracts
$
19,841

 
$
—

 
$
19,841

 
$
(19,841
)
 
$
—

Repurchase agreements
$
69,189

 
$
—

 
$
69,189

 
$
(69,189
)
 
$
—

 
 
 
 
 
 
 
 
 
 
December 31, 2015
 
 
 
 
 
 
 
 
 
Assets
 
 
 
 
 
 
 
 
 
Interest rate contracts
$
12,438

 
$
—

 
$
12,438

 
$
—

 
$
12,438

Liabilities
 
 
 
 
 
 
 
 
 
Interest rate contracts
$
12,478

 
$
—

 
$
12,478

 
$
(12,478
)
 
$
—

Repurchase agreements
$
99,699

 
$
—

 
$
99,699

 
$
(99,699
)
 
$
—
Carrying Value of Securities Pledged As Collateral
The following table summarizes the carrying value of securities pledged as collateral to secure public deposits, borrowings and other purposes as permitted or required by law:
 
 
September 30, 2016
 
 
(in thousands)
Washington and Oregon State to secure public deposits
 
$
235,931

Federal Reserve Bank to secure borrowings
 
40,877

Other securities pledged
 
147,336

Total securities pledged as collateral
 
$
424,144
Not Designated as Hedging Instrument [Member]  
Derivative [Line Items]  
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value
The following table presents the fair value of derivatives not designated as hedging instruments at September 30, 2016 and December 31, 2015:
 
Asset Derivatives
 
Liability Derivatives
 
September 30, 2016
 
December 31, 2015
 
September 30, 2016
 
December 31, 2015
 
Balance Sheet
Location
 
Fair Value
 
Balance Sheet
Location
 
Fair Value
 
Balance Sheet
Location
 
Fair Value
 
Balance Sheet
Location
 
Fair Value
 
(in thousands)
Interest rate contracts
Other assets
 
$
19,803

 
Other assets
 
$
12,438

 
Other liabilities
 
$
19,841

 
Other liabilities
 
$
12,478
Available-for-sale Securities [Member]  
Derivative [Line Items]  
Carrying Value of Securities Pledged As Collateral
 
Gross Amounts of Recognized Assets/Liabilities
 
Gross Amounts Offset in the Consolidated Balance Sheets
 
Net Amounts of Assets/Liabilities Presented in the Consolidated Balance Sheets
 
Gross Amounts Not Offset in the Consolidated Balance Sheets
 
 
 
 
Collateral Posted
 
Net Amount
September 30, 2016
(in thousands)
Assets
 
 
 
 
 
 
 
 
 
Interest rate contracts
$
19,803

 
$
—

 
$
19,803

 
$
—

 
$
19,803

Liabilities
 
 
 
 
 
 
 
 
 
Interest rate contracts
$
19,841

 
$
—

 
$
19,841

 
$
(19,841
)
 
$
—

Repurchase agreements
$
69,189

 
$
—

 
$
69,189

 
$
(69,189
)
 
$
—

 
 
 
 
 
 
 
 
 
 
December 31, 2015
 
 
 
 
 
 
 
 
 
Assets
 
 
 
 
 
 
 
 
 
Interest rate contracts
$
12,438

 
$
—

 
$
12,438

 
$
—

 
$
12,438

Liabilities
 
 
 
 
 
 
 
 
 
Interest rate contracts
$
12,478

 
$
—

 
$
12,478

 
$
(12,478
)
 
$
—

Repurchase agreements
$
99,699

 
$
—

 
$
99,699

 
$
(99,699
)
 
$
—


The following table presents the class of collateral pledged for repurchase agreements as well as the remaining contractual maturity of the repurchase agreements:
v3.5.0.2
Accumulated Other Comprehensive Income (Tables)
 9 Months Ended
Sep. 30, 2016
Accumulated Other Comprehensive Income (Loss) [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
The following table shows changes in accumulated other comprehensive income (loss) by component for the three and nine month periods ended September 30, 2016 and 2015:
 
 
Unrealized Gains and Losses on Available-for-Sale Securities (1)
 
Unrealized Gains and Losses on Pension Plan Liability (1)
 
Total (1)
Three months ended September 30, 2016
 
(in thousands)
Beginning balance
 
$
27,280

 
$
(6,469
)
 
$
20,811

Other comprehensive loss before reclassifications
 
(4,049
)
 
—

 
(4,049
)
Amounts reclassified from accumulated other comprehensive income (loss)
 
(364
)
 
107

 
(257
)
Net current-period other comprehensive income (loss)
 
(4,413
)
 
107

 
(4,306
)
Ending balance
 
$
22,867

 
$
(6,362
)
 
$
16,505

Three months ended September 30, 2015
 
 
 
 
 
 
Beginning balance
 
$
4,819

 
$
(2,030
)
 
$
2,789

Other comprehensive income before reclassifications
 
10,126

 
—

 
10,126

Amounts reclassified from accumulated other comprehensive income (loss)
 
(151
)
 
62

 
(89
)
Net current-period other comprehensive income
 
9,975

 
62

 
10,037

Ending balance
 
$
14,794

 
$
(1,968
)
 
$
12,826

Nine months ended September 30, 2016
 
 
 
 
 
 
Beginning balance
 
$
386

 
$
(6,681
)
 
$
(6,295
)
Other comprehensive income before reclassifications
 
23,229

 
—

 
23,229

Amounts reclassified from accumulated other comprehensive income (loss)
 
(748
)
 
319

 
(429
)
Net current-period other comprehensive income
 
22,481

 
319

 
22,800

Ending balance
 
$
22,867

 
$
(6,362
)
 
$
16,505

Nine months ended September 30, 2015
 
 
 
 
 
 
Beginning balance
 
$
7,462

 
$
(1,841
)
 
$
5,621

Other comprehensive income (loss) before reclassifications
 
8,161

 
(280
)
 
7,881

Amounts reclassified from accumulated other comprehensive income (loss)
 
(829
)
 
153

 
(676
)
Net current-period other comprehensive income (loss)
 
7,332

 
(127
)
 
7,205

Ending balance
 
$
14,794

 
$
(1,968
)
 
$
12,826

__________
(1) All amounts are net of tax. Amounts in parenthesis indicate debits.
Schedule of reclassifications from accumulated other comprehensive income [Table Text Block]
The following table shows details regarding the reclassifications from accumulated other comprehensive income (loss) for the three and nine month periods ended September 30, 2016 and 2015:
 
 
Amount Reclassified from Accumulated Other Comprehensive Income (Loss)
 
 
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
Affected line Item in the Consolidated
 
 
2016
 
2015
 
2016
 
2015
 
Statement of Income
 
 
(in thousands)
 
 
Unrealized gains and losses on available-for-sale securities
 
 
 
 
 
 
 
 
 
 
Investment securities gains
 
$
572

 
$
236

 
$
1,174

 
$
1,300

 
Investment securities gains, net
 
 
572

 
236

 
1,174

 
1,300

 
Total before tax
 
 
(208
)
 
(85
)
 
(426
)
 
(471
)
 
Income tax provision
 
 
$
364

 
$
151

 
$
748

 
$
829

 
Net of tax
 
 
 
 
 
 
 
 
 
 
 
Amortization of pension plan liability
 
 
 
 
 
 
 
 
 
 
Actuarial losses
 
$
(167
)
 
$
(97
)
 
$
(501
)
 
$
(240
)
 
Compensation and employee benefits
 
 
(167
)
 
(97
)
 
(501
)
 
(240
)
 
Total before tax
 
 
60

 
35

 
182

 
87

 
Income tax benefit
 
 
$
(107
)
 
$
(62
)
 
$
(319
)
 
$
(153
)
 
Net of tax
v3.5.0.2
Fair Value Accounting and Measurement (Tables)
 9 Months Ended
Sep. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Financial Assets And Liabilities Accounted For Fair Value On Recurring Basis
The following table sets forth the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis at September 30, 2016 and December 31, 2015 by level within the fair value hierarchy. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement:
 
 
Fair value
 
Fair Value Measurements at Reporting Date Using
 
 
Level 1
 
Level 2
 
Level 3
September 30, 2016
 
(in thousands)
Assets
 
 
 
 
 
 
 
 
Securities available for sale:
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations
 
$
1,512,924

 
$
—

 
$
1,512,924

 
$
—

State and municipal debt securities
 
503,118

 
—

 
503,118

 
—

U.S. government agency and government-sponsored enterprise securities
 
338,292

 
—

 
338,292

 
—

U.S. government securities
 
548

 
548

 
—

 
—

Other securities
 
5,202

 
—

 
5,202

 
—

Total securities available for sale
 
$
2,360,084

 
$
548

 
$
2,359,536

 
$
—

Other assets (Interest rate contracts)
 
$
19,803

 
$
—

 
$
19,803

 
$
—

Liabilities
 
 
 
 
 
 
 
 
Other liabilities (Interest rate contracts)
 
$
19,841

 
$
—

 
$
19,841

 
$
—

 
 
Fair value
 
Fair Value Measurements at Reporting Date Using
 
 
Level 1
 
Level 2
 
Level 3
December 31, 2015
 
(in thousands)
Assets
 
 
 
 
 
 
 
 
Securities available for sale:
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations
 
$
1,286,489

 
$
—

 
$
1,286,489

 
$
—

State and municipal debt securities
 
492,169

 
—

 
492,169

 
—

U.S. government agency and government-sponsored enterprise securities
 
353,782

 
—

 
353,782

 
—

U.S. government securities
 
20,137

 
20,137

 
—

 
—

Other securities
 
5,117

 
—

 
5,117

 
—

Total securities available for sale
 
$
2,157,694

 
$
20,137

 
$
2,137,557

 
$
—

Other assets (Interest rate contracts)
 
$
12,438

 
$
—

 
$
12,438

 
$
—

Liabilities
 
 
 
 
 
 
 
 
Other liabilities (Interest rate contracts)
 
$
12,478

 
$
—

 
$
12,478

 
$
—
Financial Assets Accounted For Fair Value On Nonrecurring Basis
The following tables set forth information related to the Company’s assets that were measured using fair value estimates on a nonrecurring basis during the current and prior year quarterly periods:
 
 
Fair value at
September 30, 2016
 
Fair Value Measurements at Reporting Date Using
 
Losses During the Three Months Ended
September 30, 2016
 
Losses During the Nine Months Ended
September 30, 2016
 
 
Level 1
 
Level 2
 
Level 3
 
 
 
(in thousands)
Impaired loans
 
$
2,304

 
$
—

 
$
—

 
$
2,304

 
$
(647
)
 
$
(3,285
)
OREO
 
335

 
—

 
—

 
335

 
(14
)
 
(14
)
 
 
$
2,639

 
$
—

 
$
—

 
$
2,639

 
$
(661
)
 
$
(3,299
)
 
 
Fair value at
September 30, 2015
 
Fair Value Measurements at Reporting Date Using
 
Losses During the Three Months Ended
September 30, 2015
 
Losses During the Nine Months Ended September 30, 2015
 
 
Level 1
 
Level 2
 
Level 3
 
 
 
(in thousands)
Impaired loans
 
$
350

 
$
—

 
$
—

 
$
350

 
$
(1,012
)
 
$
(1,012
)
OREO
 
3,286

 
—

 
—

 
3,286

 
(646
)
 
(662
)
 
 
$
3,636

 
$
—

 
$
—

 
$
3,636

 
$
(1,658
)
 
$
(1,674
)
Fair Value, by Balance Sheet Grouping
The following tables summarize carrying amounts and estimated fair values of selected financial instruments as well as assumptions used by the Company in estimating fair value at September 30, 2016 and December 31, 2015:
 
 
September 30, 2016
 
 
Carrying
Amount
 
Fair
Value
 
Level 1
 
Level 2
 
Level 3
 
 
(in thousands)
Assets
 
 
 
 
 
 
 
 
 
 
Cash and due from banks
 
$
180,839

 
$
180,839

 
$
180,839

 
$
—

 
$
—

Interest-earning deposits with banks
 
11,225

 
11,225

 
11,225

 
—

 
—

Securities available for sale
 
2,360,084

 
2,360,084

 
548

 
2,359,536

 
—

FHLB stock
 
12,640

 
12,640

 
—

 
12,640

 
—

Loans held for sale
 
3,361

 
3,361

 
—

 
3,361

 
—

Loans
 
6,189,493

 
6,274,917

 
—

 
—

 
6,274,917

FDIC loss-sharing asset
 
3,592

 
594

 
—

 
—

 
594

Interest rate contracts
 
19,803

 
19,803

 
—

 
19,803

 
—

Liabilities
 
 
 
 
 
 
 
 
 
 
Deposits
 
$
8,057,816

 
$
8,054,970

 
$
7,645,310

 
$
409,660

 
$
—

FHLB advances
 
66,502

 
67,826

 
—

 
67,826

 
—

Repurchase agreements
 
69,189

 
69,543

 
—

 
69,543

 
—

Interest rate contracts
 
19,841

 
19,841

 
—

 
19,841

 
—


 
 
December 31, 2015
 
 
Carrying
Amount
 
Fair
Value
 
Level 1
 
Level 2
 
Level 3
 
 
(in thousands)
Assets
 
 
 
 
 
 
 
 
 
 
Cash and due from banks
 
$
166,929

 
$
166,929

 
$
166,929

 
$
—

 
$
—

Interest-earning deposits with banks
 
8,373

 
8,373

 
8,373

 
—

 
—

Securities available for sale
 
2,157,694

 
2,157,694

 
20,137

 
2,137,557

 
—

FHLB stock
 
12,722

 
12,722

 
—

 
12,722

 
—

Loans held for sale
 
4,509

 
4,509

 
—

 
4,509

 
—

Loans
 
5,746,855

 
5,752,423

 
—

 
—

 
5,752,423

FDIC loss-sharing asset
 
6,568

 
921

 
—

 
—

 
921

Interest rate contracts
 
12,438

 
12,438

 
—

 
12,438

 
—

Liabilities
 
 
 
 
 
 
 
 
 
 
Deposits
 
$
7,438,829

 
$
7,434,787

 
$
6,979,924

 
$
454,863

 
$
—

FHLB advances
 
68,531

 
69,176

 
—

 
69,176

 
—

Repurchase agreements
 
99,699

 
100,346

 
—

 
100,346

 
—

Interest rate contracts
 
12,478

 
12,478

 
—

 
12,478

 
—
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair Value Inputs, Assets, Quantitative Information
The range and weighted-average of the significant unobservable inputs used to fair value our Level 3 nonrecurring assets, along with the valuation techniques used, are shown in the following table:
 
 
Fair value at
September 30, 2016
 
Valuation Technique
 
Unobservable Input
 
Range (Weighted Average) (1)
 
 
(dollars in thousands)
Impaired loans - collateral-dependent (3)
 
$
943

 
Fair Market Value of Collateral
 
Adjustment to Stated Value
 
N/A (2)
Impaired loans - other
 
$
1,361

 
Discounted Cash Flow
 
Discount Rate
 
2.85% - 6.50% (3.85%)
OREO
 
$
335

 
Fair Market Value of Collateral
 
Adjustment to Appraisal Value
 
N/A (2)
(1) Discount rate used in discounted cash flow valuation.
(2) Quantitative disclosures are not provided for collateral-dependent impaired loans and OREO because there were no adjustments made to the appraisal values or stated values during the current period.
(3) Collateral consists of fixed assets and accounts receivable.

 
 
Fair value at
September 30, 2015
 
Valuation Technique
 
Unobservable Input
 
Range (Weighted Average) (1)
 
 
(dollars in thousands)
Impaired loans
 
$
350

 
Fair Market Value of Collateral
 
Adjustment to Appraisal Value
 
N/A (2)
OREO
 
$
3,286

 
Fair Market Value of Collateral
 
Adjustment to Appraisal Value
 
N/A (2)
(1) Discount applied to appraisal value, letter of intent to purchase, or stated value (in the case of accounts receivable, inventory and equipment).
(2) Quantitative disclosures are not provided for impaired loans and OREO because there were no adjustments made to the appraisal value during the current period.
v3.5.0.2
Earnings per Common Share (Tables)
 9 Months Ended
Sep. 30, 2016
Earnings Per Share [Abstract]  
Schedule of Basic and Diluted Earnings Per Share
The following table sets forth the computation of basic and diluted earnings per share for the three and nine months ended September 30, 2016 and 2015:
 
 
Three Months Ended
 
Nine Months Ended
 
 
September 30,
 
September 30,
 
 
2016
 
2015
 
2016
 
2015
 
 
(in thousands except per share)
Basic EPS:
 
 
 
 
 
 
 
 
Net income
 
$
27,484

 
$
25,780

 
$
74,148

 
$
72,087

Less: Earnings allocated to participating securities:
 
 
 
 
 
 
 
 
Preferred shares
 
48

 
45

 
131

 
127

Nonvested restricted shares
 
378

 
296

 
953

 
772

Earnings allocated to common shareholders
 
$
27,058

 
$
25,439

 
$
73,064

 
$
71,188

Weighted average common shares outstanding
 
57,215

 
57,051

 
57,173

 
57,007

Basic earnings per common share
 
$
0.47

 
$
0.45

 
$
1.28

 
$
1.25

Diluted EPS:
 
 
 
 
 
 
 
 
Earnings allocated to common shareholders (1)
 
$
27,058

 
$
25,439

 
$
73,064

 
$
71,188

Weighted average common shares outstanding
 
57,215

 
57,051

 
57,173

 
57,007

Dilutive effect of equity awards
 
10

 
13

 
10

 
14

Weighted average diluted common shares outstanding
 
57,225

 
57,064

 
57,183

 
57,021

Diluted earnings per common share
 
$
0.47

 
$
0.45

 
$
1.28

 
$
1.25

Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive
 
15

 
29

 
20

 
40


__________
(1)
Earnings allocated to common shareholders for basic and diluted EPS may differ under the two-class method as a result of adding common stock equivalents for options and warrants to dilutive shares outstanding, which alters the ratio used to allocate earnings to common shareholders and participating securities for the purposes of calculating diluted EPS.
v3.5.0.2
Securities (Securities Available for Sale) (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]    
Securities available-for-sale, amortized cost $ 2,324,721 $ 2,157,610
Available-for-sale Debt Securities Gross Unrealized Gain, instant 38,413 18,352
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax (3,050) (18,268)
Securities available for sale 2,360,084 2,157,694
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Securities available-for-sale, amortized cost 1,498,158 1,296,955
Available-for-sale Debt Securities Gross Unrealized Gain, instant 17,148 4,525
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax (2,382) (14,991)
Securities available for sale 1,512,924 1,286,489
State and Municipal Securities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Securities available-for-sale, amortized cost 487,308 480,417
Available-for-sale Debt Securities Gross Unrealized Gain, instant 16,192 12,690
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax (382) (938)
Securities available for sale 503,118 492,169
U.S. Government and Government-Sponsored Enterprise Securities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Securities available-for-sale, amortized cost 333,423 354,515
Available-for-sale Debt Securities Gross Unrealized Gain, instant 5,009 1,113
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax (140) (1,846)
Securities available for sale 338,292 353,782
US Government Securities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Securities available-for-sale, amortized cost 548 20,439
Available-for-sale Debt Securities Gross Unrealized Gain, instant 0 0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax 0 (302)
Securities available for sale 548 20,137
Other Securities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Securities available-for-sale, amortized cost 5,284 5,284
Available-for-sale Debt Securities Gross Unrealized Gain, instant 64 24
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax (146) (191)
Securities available for sale $ 5,202 $ 5,117
v3.5.0.2
Securities (Schedule of Contractual Maturities of Investment Securities Available for Sale) (Details)
$ in Thousands
Sep. 30, 2016
USD ($)
Available-for-sale Securities [Abstract]  
Due within one year, Amortized Cost $ 28,765
Due after one year through five years, Amortized Cost 484,206
Due after five years through ten years, Amortized Cost 688,715
Due after ten years, Amortized Cost 1,117,751
No stated maturity date, Amortized Cost Basis 5,284
Total investment securities available-for-sale, Amortized Cost 2,324,721
Due within one year, Fair Value 28,874
Due after one year through five years, Fair Value 493,479
Due after five years through ten years, Fair Value 703,388
Due after ten years, Fair Value 1,129,141
No stated maturity date, Fair Value 5,202
Total investment securities available-for-sale, Fair Value $ 2,360,084
v3.5.0.2
Securities (Carrying Value of Securities Pledged as Collateral) (Details)
$ in Thousands
Sep. 30, 2016
USD ($)
Schedule of Available-for-sale Securities [Line Items]  
Carrying amount of securities pledged as collateral $ 424,144
Washington and Oregon State Public Deposits [Member]  
Schedule of Available-for-sale Securities [Line Items]  
Carrying amount of securities pledged as collateral 235,931
Federal Reserve Bank Advances [Member]  
Schedule of Available-for-sale Securities [Line Items]  
Carrying amount of securities pledged as collateral 40,877
Other Securities [Member]  
Schedule of Available-for-sale Securities [Line Items]  
Carrying amount of securities pledged as collateral $ 147,336
v3.5.0.2
Securities (Summary of Gross Unrealized Losses and Fair Value of the Investments with Unrealized Losses) (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Debt Securities Gross Unrealized Gain, instant $ 38,413 $ 18,352
Less than 12 Months Fair Value 234,538 918,813
Less than 12 Months Unrealized Losses (1,025) (9,247)
12 Months or More Fair Value 170,158 298,316
12 Months or More Unrealized Losses (2,025) (9,021)
Total Fair Value 404,696 1,217,129
Total Unrealized Losses (3,050) (18,268)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax 3,050 18,268
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Debt Securities Gross Unrealized Gain, instant 17,148 4,525
Less than 12 Months Fair Value 176,508 664,509
Less than 12 Months Unrealized Losses (548) (7,610)
12 Months or More Fair Value 163,859 214,325
12 Months or More Unrealized Losses (1,834) (7,381)
Total Fair Value 340,367 878,834
Total Unrealized Losses (2,382) (14,991)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax 2,382 14,991
State and Municipal Securities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Debt Securities Gross Unrealized Gain, instant 16,192 12,690
Less than 12 Months Fair Value 35,915 48,261
Less than 12 Months Unrealized Losses (337) (358)
12 Months or More Fair Value 3,489 31,383
12 Months or More Unrealized Losses (45) (580)
Total Fair Value 39,404 79,644
Total Unrealized Losses (382) (938)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax 382 938
US Government Corporations and Agencies Securities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Debt Securities Gross Unrealized Gain, instant 5,009 1,113
Less than 12 Months Fair Value 22,115 193,400
Less than 12 Months Unrealized Losses (140) (1,128)
12 Months or More Fair Value 0 40,034
12 Months or More Unrealized Losses 0 (718)
Total Fair Value 22,115 233,434
Total Unrealized Losses (140) (1,846)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax 140 1,846
US Government Securities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Debt Securities Gross Unrealized Gain, instant 0 0
Less than 12 Months Fair Value   10,343
Less than 12 Months Unrealized Losses   (136)
12 Months or More Fair Value   9,794
12 Months or More Unrealized Losses   (166)
Total Fair Value   20,137
Total Unrealized Losses   (302)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax 0 302
Other Securities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Debt Securities Gross Unrealized Gain, instant 64 24
Less than 12 Months Fair Value 0 2,300
Less than 12 Months Unrealized Losses 0 (15)
12 Months or More Fair Value 2,810 2,780
12 Months or More Unrealized Losses (146) (176)
Total Fair Value 2,810 5,080
Total Unrealized Losses (146) (191)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax $ 146 $ 191
v3.5.0.2
Securities (Narrative) (Details)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2016
USD ($)
security
Sep. 30, 2015
USD ($)
Sep. 30, 2016
USD ($)
security
Sep. 30, 2015
USD ($)
Schedule of Available-for-sale Securities [Line Items]        
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds | $ $ 37.4 $ 10.6 $ 120.8 $ 82.8
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]        
Schedule of Available-for-sale Securities [Line Items]        
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions 83   83  
Number Of Securities In Continuous Loss Position For Twelve Months or More 46   46  
Municipal Bonds [Member]        
Schedule of Available-for-sale Securities [Line Items]        
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions 35   35  
Number Of Securities In Continuous Loss Position For Twelve Months or More 5   5  
U.S. Government and Government-Sponsored Enterprise Securities [Member]        
Schedule of Available-for-sale Securities [Line Items]        
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions 5   5  
Number Of Securities In Continuous Loss Position For Twelve Months or More 0   0  
Other Securities [Member]        
Schedule of Available-for-sale Securities [Line Items]        
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions 1   1  
Number Of Securities In Continuous Loss Position For Twelve Months or More 1   1  
v3.5.0.2
Securities Securities (Summary of Gross Realized Gains and Gross Realized Losses (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Investments, Debt and Equity Securities [Abstract]        
Available-for-sale Securities, Gross Realized Gains $ 572 $ 236 $ 1,174 $ 1,310
Available-for-sale Securities, Gross Realized Losses 0 0 0 (10)
Investment securities gains, net $ 572 $ 236 $ 1,174 $ 1,300
v3.5.0.2
Loans (Narrative) (Details)
$ in Thousands
 9 Months Ended
Sep. 30, 2016
USD ($)
contract
Dec. 31, 2015
USD ($)
Financing Receivable, Recorded Investment [Line Items]    
Loans to related parties $ 10,100 $ 10,000
Loans and Leases Receivable, Related Parties, Additions 759  
Repayments on related party loans $ 652  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract 0  
Loans Receivable [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged $ 2,300,000 2,220,000
Federal Reserve Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged $ 50,000 $ 50,100
v3.5.0.2
Loans (Analysis of Loan Portfolio by Major Types of Loans) (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Jun. 30, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]            
Less: unearned income on loans $ (36,236)   $ (42,373)      
Recorded Investment 6,259,757   5,815,027      
Allowance for loan losses (70,264) $ (69,304) (68,172) $ (69,049) $ (69,257) $ (69,569)
Loans, net 6,189,493   5,746,855      
Loans held for sale 3,361   4,509      
Loans, Excluding Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Less: unearned income on loans (36,236)   (42,373)      
Recorded Investment 6,106,993   5,634,121      
Allowance for loan losses (58,762)   (54,446)      
Loans, net 6,048,231   5,579,675      
Loans held for sale 3,361   4,509      
Loans and Leases Receivable, Gross 6,106,993   5,634,121      
Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Less: unearned income on loans 0   0      
Recorded Investment 152,764   180,906      
Allowance for loan losses (11,502)   (13,726)      
Loans, net 141,262   167,180      
Loans held for sale 0   0      
Loans and Leases Receivable, Gross 165,094   197,350      
Acquisition Accounting Valuation Discount on Covered Loans 12,330   16,444      
Commercial and Multifamily Residential Construction [Domain] | Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans and Leases Receivable, Gross 1,754   1,834      
One-to-Four Family Residential [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans and Leases Receivable, Gross, Consumer, Mortgage 187,889   200,233      
Loans and Leases Receivable, Gross, Consumer, Construction 131,030   138,152      
Allowance for loan losses (977) (675) (916) (1,196) (1,355) (2,281)
One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans and Leases Receivable, Gross, Consumer, Mortgage 168,511   176,295      
Loans and Leases Receivable, Gross, Consumer, Construction 130,163   135,874      
Loans and Leases Receivable, Gross 165,940   173,436      
One-to-Four Family Residential [Member] | Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans and Leases Receivable, Gross, Consumer, Mortgage 19,378   23,938      
Loans and Leases Receivable, Gross, Consumer, Construction 867   2,278      
Loans and Leases Receivable, Gross 22,227   27,195      
Commercial and Multifamily Residential [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans Receivable, Gross, Commercial, Mortgage 2,779,400   2,591,125      
Loans Receivable, Gross, Commercial, Construction 203,597   169,043      
Commercial and Multifamily Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans Receivable, Gross, Commercial, Mortgage 2,686,783   2,491,736      
Loans Receivable, Gross, Commercial, Construction 202,014   167,413      
Commercial and Multifamily Residential [Member] | Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans Receivable, Gross, Commercial, Mortgage 92,617   99,389      
Loans Receivable, Gross, Commercial, Construction 1,583   1,630      
Loans and Leases Receivable, Gross 98,178   106,308      
Commercial Portfolio Segment [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans Receivable, Gross, Commercial and Industrial 2,652,575   2,397,423      
Commercial Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans Receivable, Gross, Commercial and Industrial 2,630,017   2,362,575      
Commercial Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans Receivable, Gross, Commercial and Industrial 22,558   34,848      
Loans and Leases Receivable, Gross 24,436   38,784      
Real Estate Portfolio Segment [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans Receivable Real Estate Mortgage 2,967,289   2,791,358      
Real Estate Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans Receivable Real Estate Mortgage 2,855,294   2,668,031      
Real Estate Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans Receivable Real Estate Mortgage 111,995   123,327      
Loans and Leases Receivable, Gross 120,405   133,503      
One-to-Four Family Residential Construction [Domain] | Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans and Leases Receivable, Gross 867   2,326      
Real Estate Construction Portfolio Segment [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans Receivable Real Estate Construction 334,627   307,195      
Real Estate Construction Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans Receivable Real Estate Construction 332,177   303,287      
Real Estate Construction Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans Receivable Real Estate Construction 2,450   3,908      
Loans and Leases Receivable, Gross 2,621   4,160      
Consumer Portfolio Segment [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans and Leases Receivable, Gross, Consumer 341,502   361,424      
Allowance for loan losses (3,743) $ (3,559) (3,531) $ (3,217) $ (3,182) $ (3,180)
Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans and Leases Receivable, Gross, Consumer 325,741   342,601      
Loans and Leases Receivable, Gross 319,875   332,362      
Consumer Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans and Leases Receivable, Gross, Consumer 15,761   18,823      
Loans and Leases Receivable, Gross $ 17,632   $ 20,903      
v3.5.0.2
Loans (Analysis of Nonaccrual Loans) (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]    
Recorded Investment Nonaccrual Loans $ 21,366 $ 21,464
Unpaid Principal Balance Nonaccrual Loans 35,652 32,263
Secured Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Recorded Investment Nonaccrual Loans 9,466 9,395
Unpaid Principal Balance Nonaccrual Loans 19,689 15,688
Unsecured Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Recorded Investment Nonaccrual Loans 36 42
Unpaid Principal Balance Nonaccrual Loans 216 256
One-to-Four Family Residential [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Recorded Investment Nonaccrual Loans 579 820
Unpaid Principal Balance Nonaccrual Loans 1,303 1,866
Commercial Land [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Recorded Investment Nonaccrual Loans 934 349
Unpaid Principal Balance Nonaccrual Loans 922 332
Income Property Multifamily [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Recorded Investment Nonaccrual Loans 1,957 2,843
Unpaid Principal Balance Nonaccrual Loans 2,177 3,124
Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Recorded Investment Nonaccrual Loans 4,161 6,321
Unpaid Principal Balance Nonaccrual Loans 6,842 8,943
Land And Acquisition [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Recorded Investment Nonaccrual Loans 0 362
Unpaid Principal Balance Nonaccrual Loans 0 385
Residential Construction [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Recorded Investment Nonaccrual Loans 461 566
Unpaid Principal Balance Nonaccrual Loans 461 679
Consumer Portfolio Segment [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Recorded Investment Nonaccrual Loans 3,772 766
Unpaid Principal Balance Nonaccrual Loans $ 4,042 $ 990
v3.5.0.2
Loans (Analysis of the Aged Loan Portfolio) (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual Loans $ 21,366 $ 21,464
Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Current Loans 6,079,530 5,592,208
Past Due Loans 6,097 20,449
Nonaccrual Loans 21,366 21,464
Loans Receivable, Net 6,106,993 5,634,121
Secured Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual Loans 9,466 9,395
Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Current Loans 2,515,042 2,241,069
Past Due Loans 3,151 12,228
Nonaccrual Loans 9,466 9,395
Loans Receivable, Net 2,527,659 2,262,692
Unsecured Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual Loans 36 42
Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Current Loans 97,496 94,867
Past Due Loans 5 39
Nonaccrual Loans 36 42
Loans Receivable, Net 97,537 94,948
One-to-Four Family Residential [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual Loans 579 820
One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Current Loans 164,927 170,913
Past Due Loans 434 1,703
Nonaccrual Loans 579 820
Loans Receivable, Net 165,940 173,436
Commercial Land [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual Loans 934 349
Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Current Loans 238,887 212,740
Past Due Loans 200 69
Nonaccrual Loans 934 349
Loans Receivable, Net 240,021 213,158
Income Property Multifamily [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual Loans 1,957 2,843
Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Current Loans 1,376,735 1,305,502
Past Due Loans 90 2,434
Nonaccrual Loans 1,957 2,843
Loans Receivable, Net 1,378,782 1,310,779
Owner Occupied [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual Loans 4,161 6,321
Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Current Loans 1,043,376 939,396
Past Due Loans 58 599
Nonaccrual Loans 4,161 6,321
Loans Receivable, Net 1,047,595 946,316
Land And Acquisition [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual Loans 0 362
Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Current Loans 11,933 14,388
Past Due Loans 119 0
Nonaccrual Loans 0 362
Loans Receivable, Net 12,052 14,750
Residential Construction [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual Loans 461 566
Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Current Loans 116,327 119,809
Past Due Loans 518 0
Nonaccrual Loans 461 566
Loans Receivable, Net 117,306 120,375
Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Current Loans 89,373 83,634
Past Due Loans 0 0
Nonaccrual Loans 0 0
Loans Receivable, Net 89,373 83,634
Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Current Loans 110,853 81,671
Past Due Loans 0 0
Nonaccrual Loans 0 0
Loans Receivable, Net 110,853 81,671
Consumer Portfolio Segment [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual Loans 3,772 766
Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Current Loans 314,581 328,219
Past Due Loans 1,522 3,377
Nonaccrual Loans 3,772 766
Loans Receivable, Net 319,875 332,362
Financing Receivables, 60 to 89 Days Past Due [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 2,021 2,147
Financing Receivables, 60 to 89 Days Past Due [Member] | Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 609 617
Financing Receivables, 60 to 89 Days Past Due [Member] | Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 0 0
Financing Receivables, 60 to 89 Days Past Due [Member] | One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 34 66
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 200 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 0 684
Financing Receivables, 60 to 89 Days Past Due [Member] | Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 0 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 0 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 305 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 0 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 0 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 873 780
Financing Receivables, 30 to 59 Days Past Due [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 4,076 18,302
Financing Receivables, 30 to 59 Days Past Due [Member] | Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 2,542 11,611
Financing Receivables, 30 to 59 Days Past Due [Member] | Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 5 39
Financing Receivables, 30 to 59 Days Past Due [Member] | One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 400 1,637
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 0 69
Financing Receivables, 30 to 59 Days Past Due [Member] | Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 90 1,750
Financing Receivables, 30 to 59 Days Past Due [Member] | Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 58 599
Financing Receivables, 30 to 59 Days Past Due [Member] | Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 119 0
Financing Receivables, 30 to 59 Days Past Due [Member] | Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 213 0
Financing Receivables, 30 to 59 Days Past Due [Member] | Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 0 0
Financing Receivables, 30 to 59 Days Past Due [Member] | Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 0 0
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 649 2,597
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 0 0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 0 0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 0 0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 0 0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 0 0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 0 0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 0 0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 0 0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 0 0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 0 0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans 0 0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Past Due Loans $ 0 $ 0
v3.5.0.2
Loans (Analysis of Impaired Loans) (Details) - Loans, Excluding Purchased Credit Impaired Loans [Member] - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment of Loans Collectively Measured for Contingency Provision $ 6,088,745   $ 6,088,745   $ 5,618,041
Recorded Investment of Loans Individually Measured for Specific Impairment 18,248   18,248   16,080
Recorded Investment 13,160   13,160   14,726
Unpaid Principal Balance 22,531   22,531   19,547
Related Allowance 1,300   1,300   653
Average Recorded Investment Impaired Loans 18,556 $ 20,293 20,502 $ 23,946  
Interest Recognized on Impaired Loans 54 91 125 612  
Secured Loans [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment of Loans Collectively Measured for Contingency Provision 2,520,876   2,520,876   2,257,168
Recorded Investment of Loans Individually Measured for Specific Impairment 6,783   6,783   5,524
Recorded Investment 1,208   1,208   690
Unpaid Principal Balance 1,277   1,277   718
Related Allowance 873   873   321
Average Recorded Investment Impaired Loans 6,909 6,507 9,506 8,602  
Interest Recognized on Impaired Loans 15 3 48 10  
Unsecured Loans [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment of Loans Collectively Measured for Contingency Provision 97,537   97,537   94,948
Recorded Investment of Loans Individually Measured for Specific Impairment 0   0   0
Recorded Investment 0   0   0
Unpaid Principal Balance 0   0   0
Related Allowance 0   0   0
Average Recorded Investment Impaired Loans 0 0 0 1  
Interest Recognized on Impaired Loans 0 0 0 0  
One-to-Four Family Residential [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment of Loans Collectively Measured for Contingency Provision 165,394   165,394   172,150
Recorded Investment of Loans Individually Measured for Specific Impairment 546   546   1,286
Recorded Investment 358   358   314
Unpaid Principal Balance 591   591   339
Related Allowance 353   353   314
Average Recorded Investment Impaired Loans 617 3,315 796 3,238  
Interest Recognized on Impaired Loans 5 11 8 35  
Commercial Land [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment of Loans Collectively Measured for Contingency Provision 239,313   239,313   213,158
Recorded Investment of Loans Individually Measured for Specific Impairment 708   708   0
Recorded Investment 0   0   0
Unpaid Principal Balance 0   0   0
Related Allowance 0   0   0
Average Recorded Investment Impaired Loans 708 0 354 118  
Interest Recognized on Impaired Loans 0 0 0 0  
Income Property Multifamily [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment of Loans Collectively Measured for Contingency Provision 1,376,349   1,376,349   1,308,673
Recorded Investment of Loans Individually Measured for Specific Impairment 2,433   2,433   2,106
Recorded Investment 546   546   0
Unpaid Principal Balance 551   551   0
Related Allowance 28   28   0
Average Recorded Investment Impaired Loans 1,939 2,061 2,010 3,114  
Interest Recognized on Impaired Loans 8 10 19 27  
Owner Occupied [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment of Loans Collectively Measured for Contingency Provision 1,043,849   1,043,849   940,261
Recorded Investment of Loans Individually Measured for Specific Impairment 3,746   3,746   6,055
Recorded Investment 0   0   0
Unpaid Principal Balance 0   0   0
Related Allowance 0   0   0
Average Recorded Investment Impaired Loans 4,486 6,665 5,001 7,302  
Interest Recognized on Impaired Loans 0 65 0 533  
Land And Acquisition [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment of Loans Collectively Measured for Contingency Provision 11,950   11,950   14,283
Recorded Investment of Loans Individually Measured for Specific Impairment 102   102   467
Recorded Investment 0   0   0
Unpaid Principal Balance 0   0   0
Related Allowance 0   0   0
Average Recorded Investment Impaired Loans 103 825 245 685  
Interest Recognized on Impaired Loans 1 1 4 4  
Residential Construction [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment of Loans Collectively Measured for Contingency Provision 116,970   116,970   119,813
Recorded Investment of Loans Individually Measured for Specific Impairment 336   336   562
Recorded Investment 0   0   335
Unpaid Principal Balance 0   0   335
Related Allowance 0   0   3
Average Recorded Investment Impaired Loans 449 893 506 670  
Interest Recognized on Impaired Loans 0 0 0 0  
Income Property Multifamily Construction [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment of Loans Collectively Measured for Contingency Provision 89,373   89,373   83,634
Recorded Investment of Loans Individually Measured for Specific Impairment 0   0   0
Recorded Investment 0   0   0
Unpaid Principal Balance 0   0   0
Related Allowance 0   0   0
Owner Occupied Construction [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment of Loans Collectively Measured for Contingency Provision 110,853   110,853   81,671
Recorded Investment of Loans Individually Measured for Specific Impairment 0   0   0
Recorded Investment 0   0   0
Unpaid Principal Balance 0   0   0
Related Allowance 0   0   0
Consumer Portfolio Segment [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment of Loans Collectively Measured for Contingency Provision 316,281   316,281   332,282
Recorded Investment of Loans Individually Measured for Specific Impairment 3,594   3,594   80
Recorded Investment 2,976   2,976   15
Unpaid Principal Balance 3,010   3,010   15
Related Allowance 46   46   15
Average Recorded Investment Impaired Loans 3,345 27 2,084 216  
Interest Recognized on Impaired Loans 25 $ 1 46 $ 3  
Impaired Loans With Recorded Allowance [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment 5,088   5,088   1,354
Unpaid Principal Balance 5,429   5,429   1,407
Impaired Loans Without Recorded Allowance [Member] | Secured Loans [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment 5,575   5,575   4,834
Unpaid Principal Balance 11,840   11,840   6,455
Impaired Loans Without Recorded Allowance [Member] | Unsecured Loans [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment 0   0   0
Unpaid Principal Balance 0   0   0
Impaired Loans Without Recorded Allowance [Member] | One-to-Four Family Residential [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment 188   188   972
Unpaid Principal Balance 402   402   1,397
Impaired Loans Without Recorded Allowance [Member] | Commercial Land [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment 708   708   0
Unpaid Principal Balance 687   687   0
Impaired Loans Without Recorded Allowance [Member] | Income Property Multifamily [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment 1,887   1,887   2,106
Unpaid Principal Balance 2,124   2,124   2,311
Impaired Loans Without Recorded Allowance [Member] | Owner Occupied [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment 3,746   3,746   6,055
Unpaid Principal Balance 6,340   6,340   8,528
Impaired Loans Without Recorded Allowance [Member] | Land And Acquisition [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment 102   102   467
Unpaid Principal Balance 102   102   490
Impaired Loans Without Recorded Allowance [Member] | Residential Construction [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment 336   336   227
Unpaid Principal Balance 336   336   227
Impaired Loans Without Recorded Allowance [Member] | Income Property Multifamily Construction [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment 0   0   0
Unpaid Principal Balance 0   0   0
Impaired Loans Without Recorded Allowance [Member] | Owner Occupied Construction [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment 0   0   0
Unpaid Principal Balance 0   0   0
Impaired Loans Without Recorded Allowance [Member] | Consumer Portfolio Segment [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment 618   618   65
Unpaid Principal Balance $ 700   $ 700   $ 139
v3.5.0.2
Loans Loans (Analysis of Troubled Debt Restructurings) (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
USD ($)
Modifications
Sep. 30, 2015
USD ($)
Modifications
Sep. 30, 2016
USD ($)
Modifications
Sep. 30, 2015
USD ($)
Modifications
Dec. 31, 2015
USD ($)
Financing Receivable, Modifications [Line Items]          
Financing Receivable Modifications Additional Commitment To Lend $ 51   $ 51   $ 0
Loans, Excluding Purchased Credit Impaired Loans [Member]          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | Modifications 13 4 38 5  
Financing Receivable, Modifications, Pre-Modification Recorded Investment $ 906 $ 2,903 $ 5,560 $ 2,933  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 906 $ 2,903 $ 5,560 $ 2,933  
Loans, Excluding Purchased Credit Impaired Loans [Member] | Secured Loans [Member]          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | Modifications 2 4 7 4  
Financing Receivable, Modifications, Pre-Modification Recorded Investment $ 90 $ 2,903 $ 1,753 $ 2,903  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 90 $ 2,903 $ 1,753 $ 2,903  
Loans, Excluding Purchased Credit Impaired Loans [Member] | One-to-Four Family Residential [Member]          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | Modifications 1 0 2 1  
Financing Receivable, Modifications, Pre-Modification Recorded Investment $ 85 $ 0 $ 115 $ 30  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 85 $ 0 $ 115 $ 30  
Loans, Excluding Purchased Credit Impaired Loans [Member] | Owner Occupied [Member]          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | Modifications     1 0  
Financing Receivable, Modifications, Pre-Modification Recorded Investment     $ 250 $ 0  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 250 $ 0  
Loans, Excluding Purchased Credit Impaired Loans [Member] | Consumer Portfolio Segment [Member]          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | Modifications 10 0 28 0  
Financing Receivable, Modifications, Pre-Modification Recorded Investment $ 731 $ 0 $ 3,442 $ 0  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 731 $ 0 $ 3,442 $ 0  
v3.5.0.2
Loans Loans (Analysis of Purchased Credit Impaired Loans - Accretable Yield Rollforward) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Jun. 30, 2016
Dec. 31, 2015
Jun. 30, 2015
Dec. 31, 2014
Loans, Analysis of Purchased Credit Impaired Loans, Accretable Yield Rollforward [Abstract]                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield $ 48,863 $ 62,840 $ 48,863 $ 62,840 $ 52,909 $ 58,981 $ 67,283 $ 73,849
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion 4,902 5,049 12,905 17,105        
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Disposals of Loans 178 (256) 157 1,796        
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference $ 1,034 $ 350 $ 2,944 $ 7,892        
v3.5.0.2
Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Narrative) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Provision for loan and lease losses $ 1,866 $ 2,831 $ 10,760 $ 6,242
Maximum [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Percentage of unallocated loan amount     5.00%  
v3.5.0.2
Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Allowance for Loan and Lease Losses) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance $ 69,304 $ 69,257 $ 68,172 $ 69,569
Charged-offs (4,604) (6,277) (17,743) (18,315)
Recoveries 3,698 3,238 9,075 11,553
Provision for loan and lease losses 1,866 2,831 10,760 6,242
Ending balance 70,264 69,049 70,264 69,049
Specific Reserve 1,300 1,199 1,300 1,199
General Allocation 68,964 67,850 68,964 67,850
Secured Loans [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 31,808 27,708 32,321 25,923
Charged-offs (2,128) (2,439) (8,798) (5,847)
Recoveries 787 530 2,126 1,242
Provision for loan and lease losses 2,008 5,189 6,826 9,670
Ending balance 32,475 30,988 32,475 30,988
Specific Reserve 873 1,020 873 1,020
General Allocation 31,602 29,968 31,602 29,968
Unsecured Loans [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 1,265 857 1,299 927
Charged-offs (31) (131) (75) (235)
Recoveries 67 93 143 208
Provision for loan and lease losses (128) 471 (194) 390
Ending balance 1,173 1,290 1,173 1,290
Specific Reserve 0 0 0 0
General Allocation 1,173 1,290 1,173 1,290
One-to-Four Family Residential [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 675 1,355 916 2,281
Charged-offs 0 0 (35) (297)
Recoveries 81 261 142 288
Provision for loan and lease losses 221 (420) (46) (1,076)
Ending balance 977 1,196 977 1,196
Specific Reserve 353 84 353 84
General Allocation 624 1,112 624 1,112
Commercial Land [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 1,422 1,581 1,178 799
Charged-offs 0 0 (26) 0
Recoveries 0 130 2 130
Provision for loan and lease losses 92 123 360 905
Ending balance 1,514 1,834 1,514 1,834
Specific Reserve 0 0 0 0
General Allocation 1,514 1,834 1,514 1,834
Income Property Multifamily [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 8,046 8,197 6,616 9,159
Charged-offs 0 (83) 0 (126)
Recoveries 10 273 191 3,532
Provision for loan and lease losses 149 22 1,398 (4,156)
Ending balance 8,205 8,409 8,205 8,409
Specific Reserve 28 0 28 0
General Allocation 8,177 8,409 8,177 8,409
Owner Occupied [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 6,336 5,801 5,550 5,007
Charged-offs 0 (115) 0 (115)
Recoveries 10 14 26 36
Provision for loan and lease losses 487 473 1,257 1,245
Ending balance 6,833 6,173 6,833 6,173
Specific Reserve 0 17 0 17
General Allocation 6,833 6,156 6,833 6,156
Land And Acquisition [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 587 497 339 1,197
Charged-offs 0 0 0 0
Recoveries 2 98 55 101
Provision for loan and lease losses (134) (206) 61 (909)
Ending balance 455 389 455 389
Specific Reserve 0 64 0 64
General Allocation 455 325 455 325
Residential Construction [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 1,376 958 733 1,860
Charged-offs 0 0 0 0
Recoveries 19 7 225 40
Provision for loan and lease losses (393) (250) 44 (1,185)
Ending balance 1,002 715 1,002 715
Specific Reserve 0 0 0 0
General Allocation 1,002 715 1,002 715
Income Property Multifamily Construction [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 904 407 388 622
Charged-offs 0 0 0 0
Recoveries 107 2 109 7
Provision for loan and lease losses (480) (68) 34 (288)
Ending balance 531 341 531 341
Specific Reserve 0 0 0 0
General Allocation 531 341 531 341
Owner Occupied Construction [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 1,384 441 1,006 434
Charged-offs 0 0 0 0
Recoveries 0 0 0 0
Provision for loan and lease losses 57 (31) 435 (24)
Ending balance 1,441 410 1,441 410
Specific Reserve 0 0 0 0
General Allocation 1,441 410 1,441 410
Consumer Portfolio Segment [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 3,559 3,182 3,531 3,180
Charged-offs (383) (311) (983) (1,521)
Recoveries 399 297 765 707
Provision for loan and lease losses 168 49 430 851
Ending balance 3,743 3,217 3,743 3,217
Specific Reserve 46 14 46 14
General Allocation 3,697 3,203 3,697 3,203
Purchased Credit Impaired Loans [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 11,781 16,174 13,726 16,336
Charged-offs (2,062) (3,198) (7,826) (10,174)
Recoveries 2,216 1,533 5,291 5,262
Provision for loan and lease losses (433) (519) 311 2,566
Ending balance 11,502 13,990 11,502 13,990
Specific Reserve 0 0 0 0
General Allocation 11,502 13,990 11,502 13,990
Unallocated Financing Receivables [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 161 2,099 569 1,844
Charged-offs 0 0 0 0
Recoveries 0 0 0 0
Provision for loan and lease losses 252 (2,002) (156) (1,747)
Ending balance 413 97 413 97
Specific Reserve 0 0 0 0
General Allocation $ 413 $ 97 $ 413 $ 97
v3.5.0.2
Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Changes in the Allowance for Unfunded Commitments and Letters of Credit) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Allowance For Loan And Lease Losses And Unfunded Loan Commitments And Letters Of Credit        
Beginning balance $ 2,780 $ 2,930 $ 2,930 $ 2,655
Allowance for Loan and Lease Losses, Net Changes In Unfunded Commitments and Letters Of Credit Allowance 125 0 (25) 275
Ending balance $ 2,905 $ 2,930 $ 2,905 $ 2,930
v3.5.0.2
Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Analysis of Credit Quality of the Loan Portfolio) (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Jun. 30, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Less: allowance for loan and lease losses $ 70,264 $ 69,304 $ 68,172 $ 69,049 $ 69,257 $ 69,569
Loans, net 6,189,493   5,746,855      
Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 6,106,993   5,634,121      
Less: allowance for loan and lease losses 58,762   54,446      
Loans, net 6,048,231   5,579,675      
Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 165,094   197,350      
Acquisition Accounting Valuation Discount on Purchased Credit Impaired Loans 12,330   16,444      
Less: allowance for loan and lease losses 11,502   13,726      
Loans, net 141,262   167,180      
Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 5,930,483   5,461,639      
Pass [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 156,533   178,904      
Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 77,789   80,599      
Special Mention [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 94   362      
Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 98,721   91,883      
Substandard [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 8,467   18,084      
Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Doubtful [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Secured Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Less: allowance for loan and lease losses 32,475 31,808 32,321 30,988 27,708 25,923
Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 2,527,659   2,262,692      
Secured Loans [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 23,705   37,564      
Secured Loans [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 2,417,653   2,146,729      
Secured Loans [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 21,420   31,468      
Secured Loans [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 48,462   59,746      
Secured Loans [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 94   101      
Secured Loans [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 61,544   56,217      
Secured Loans [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 2,191   5,995      
Secured Loans [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Secured Loans [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Secured Loans [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Secured Loans [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Unsecured Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Less: allowance for loan and lease losses 1,173 1,265 1,299 1,290 857 927
Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 97,537   94,948      
Unsecured Loans [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 731   1,220      
Unsecured Loans [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 96,402   93,347      
Unsecured Loans [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 731   1,218      
Unsecured Loans [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 800   278      
Unsecured Loans [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Unsecured Loans [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 335   1,323      
Unsecured Loans [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   2      
Unsecured Loans [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Unsecured Loans [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Unsecured Loans [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Unsecured Loans [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
One-to-Four Family Residential [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Less: allowance for loan and lease losses 977 675 916 1,196 1,355 2,281
One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 165,940   173,436      
One-to-Four Family Residential [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 22,227   27,195      
One-to-Four Family Residential [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 164,102   171,945      
One-to-Four Family Residential [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 20,996   25,018      
One-to-Four Family Residential [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 458   52      
One-to-Four Family Residential [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
One-to-Four Family Residential [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 1,380   1,439      
One-to-Four Family Residential [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 1,231   2,177      
One-to-Four Family Residential [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
One-to-Four Family Residential [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
One-to-Four Family Residential [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
One-to-Four Family Residential [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Commercial Land [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Less: allowance for loan and lease losses 1,514 1,422 1,178 1,834 1,581 799
Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 240,021   213,158      
Commercial Land [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 8,137   8,898      
Commercial Land [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 233,795   207,768      
Commercial Land [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 7,745   8,234      
Commercial Land [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 5,276   4,966      
Commercial Land [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Commercial Land [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 950   424      
Commercial Land [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 392   664      
Commercial Land [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Commercial Land [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Commercial Land [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Commercial Land [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Income Property Multifamily [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Less: allowance for loan and lease losses 8,205 8,046 6,616 8,409 8,197 9,159
Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 1,378,782   1,310,779      
Income Property Multifamily [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 33,926   42,342      
Income Property Multifamily [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 1,354,651   1,296,043      
Income Property Multifamily [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 31,481   36,426      
Income Property Multifamily [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 17,048   5,889      
Income Property Multifamily [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Income Property Multifamily [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 7,083   8,847      
Income Property Multifamily [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 2,445   5,916      
Income Property Multifamily [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Income Property Multifamily [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Income Property Multifamily [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Income Property Multifamily [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Owner Occupied [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Less: allowance for loan and lease losses 6,833 6,336 5,550 6,173 5,801 5,007
Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 1,047,595   946,316      
Owner Occupied [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 56,115   55,068      
Owner Occupied [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 1,027,356   918,986      
Owner Occupied [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 54,471   53,071      
Owner Occupied [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 5,745   9,668      
Owner Occupied [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   261      
Owner Occupied [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 14,494   17,662      
Owner Occupied [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 1,644   1,736      
Owner Occupied [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Owner Occupied [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Owner Occupied [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Owner Occupied [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Land And Acquisition [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Less: allowance for loan and lease losses 455 587 339 389 497 1,197
Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 12,052   14,750      
Land And Acquisition [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 867   1,565      
Land And Acquisition [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 12,052   14,388      
Land And Acquisition [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 767   1,086      
Land And Acquisition [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Land And Acquisition [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Land And Acquisition [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   362      
Land And Acquisition [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 100   479      
Land And Acquisition [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Land And Acquisition [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Land And Acquisition [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Land And Acquisition [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Residential Construction [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Less: allowance for loan and lease losses 1,002 1,376 733 715 958 1,860
Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 117,306   120,375      
Residential Construction [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   761      
Residential Construction [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 116,187   119,243      
Residential Construction [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   427      
Residential Construction [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Residential Construction [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Residential Construction [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 1,119   1,132      
Residential Construction [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   334      
Residential Construction [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Residential Construction [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Residential Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Residential Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Income Property Multifamily Construction [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Less: allowance for loan and lease losses 531 904 388 341 407 622
Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 89,373   83,634      
Income Property Multifamily Construction [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 1,239   1,303      
Income Property Multifamily Construction [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 89,373   83,634      
Income Property Multifamily Construction [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 1,239   1,303      
Income Property Multifamily Construction [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Income Property Multifamily Construction [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Income Property Multifamily Construction [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Income Property Multifamily Construction [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Income Property Multifamily Construction [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Income Property Multifamily Construction [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Income Property Multifamily Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Income Property Multifamily Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Owner Occupied Construction [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Less: allowance for loan and lease losses 1,441 1,384 1,006 410 441 434
Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 110,853   81,671      
Owner Occupied Construction [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 515   531      
Owner Occupied Construction [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 106,310   81,270      
Owner Occupied Construction [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 515   531      
Owner Occupied Construction [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Owner Occupied Construction [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Owner Occupied Construction [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 4,543   401      
Owner Occupied Construction [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Owner Occupied Construction [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Owner Occupied Construction [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Owner Occupied Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Owner Occupied Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Consumer Portfolio Segment [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Less: allowance for loan and lease losses 3,743 $ 3,559 3,531 $ 3,217 $ 3,182 $ 3,180
Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 319,875   332,362      
Consumer Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 17,632   20,903      
Consumer Portfolio Segment [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 312,602   328,286      
Consumer Portfolio Segment [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 17,168   20,122      
Consumer Portfolio Segment [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Consumer Portfolio Segment [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Consumer Portfolio Segment [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 7,273   4,076      
Consumer Portfolio Segment [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 464   781      
Consumer Portfolio Segment [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Consumer Portfolio Segment [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Consumer Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 0   0      
Consumer Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount $ 0   $ 0      
v3.5.0.2
Other Real Estate Owned (Summary of Other Real Estate Owned) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Other Real Estate Owned [Line Items]        
Balance, beginning of period $ 10,613 $ 20,617 $ 13,738 $ 22,190
Transfers in 891 915 1,202 8,751
Valuation adjustments (14) (664) (290) (1,457)
Proceeds from Sale of OREO Property 2,569 1,675 5,845 13,283
Gain on sale of OREO, net 73 263 189 3,255
Total OREO, end of period 8,994 $ 19,456 8,994 $ 19,456
Mortgage Loans in Process of Foreclosure, Amount 876   876  
One-to-Four Family Residential [Member]        
Other Real Estate Owned [Line Items]        
Total OREO, end of period $ 604   $ 604  
v3.5.0.2
Covered Assets and FDIC Loss-sharing Asset (Narrative) (Details)
$ in Thousands
 9 Months Ended
Sep. 30, 2016
USD ($)
Covered Assets And FDIC Loss Sharing Asset [Line Items]  
Amount of Estimated Clawback Liability $ 5,462
Payment Of Clawback If Losses Less Than Stated Levels, Period After Acquisition 10 years 45 days
Federal deposit insurance corporation loss-sharing indemnified assets $ 3,200
Federal deposit insurance corporation loss-sharing indemnified assets receivable $ 438
Maximum [Member]  
Covered Assets And FDIC Loss Sharing Asset [Line Items]  
Loss Sharing Agreement Effective Years 10 years
Loss Recovery Provision Effective Years 10 years
Minimum [Member]  
Covered Assets And FDIC Loss Sharing Asset [Line Items]  
Loss Sharing Agreement Effective Years 5 years
Loss Recovery Provision Effective Years 8 years
Covered Loans [Member]  
Covered Assets And FDIC Loss Sharing Asset [Line Items]  
Percentage of loss shared by FDIC 80.00%
FDIC Percentage Of Loss Recoveries 80.00%
Percentage of loss shared by FDIC When Loss Share Thresholds Met 95.00%
Percentage Of Loss Recoveries Shared By FDIC When Loss Share Thresholds Met 95.00%
v3.5.0.2
Covered Assets and FDIC Loss-sharing Asset (FDIC Loss-sharing Asset) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Covered Assets And FDIC Loss Sharing Asset [Line Items]        
Balance at beginning of period $ 4,266 $ 9,344 $ 6,568 $ 15,174
Cash (received from) paid to the FDIC, net 20 799 (23) (2,723)
FDIC reimbursable losses, net (590) (362) (756) (1,326)
Amortization, net (315) (1,416) (2,530) (5,086)
Loan impairment (recapture) 266 (119) 393 1,413
Sale of other real estate (49) (126) 71 (753)
Valuation adjustments of other real estate owned 0 25 (22) 1,148
Other 6 (1) 109 (299)
Balance at end of period 3,592 $ 8,146 3,592 $ 8,146
Amount of Estimated Clawback Liability 5,462   5,462  
Non-Single Family Covered Assets 89,251   89,251  
Single Family Covered Assets 31,395   31,395  
Columbia River Bank [Member]        
Covered Assets And FDIC Loss Sharing Asset [Line Items]        
Balance at end of period 349   349  
Amount of Estimated Clawback Liability 3,474   3,474  
Non-Single Family Covered Assets 61,040   61,040  
Single Family Covered Assets 6,110   6,110  
American Marine Bank [Member]        
Covered Assets And FDIC Loss Sharing Asset [Line Items]        
Balance at end of period 1,959   1,959  
Amount of Estimated Clawback Liability 1,280   1,280  
Non-Single Family Covered Assets 9,366   9,366  
Single Family Covered Assets 18,563   18,563  
Summit Bank [Member]        
Covered Assets And FDIC Loss Sharing Asset [Line Items]        
Balance at end of period 1,577   1,577  
Amount of Estimated Clawback Liability 0   0  
Non-Single Family Covered Assets 6,700   6,700  
Single Family Covered Assets 5,077   5,077  
First Heritage Bank [Member]        
Covered Assets And FDIC Loss Sharing Asset [Line Items]        
Balance at end of period (293)   (293)  
Amount of Estimated Clawback Liability 708   708  
Non-Single Family Covered Assets 12,145   12,145  
Single Family Covered Assets $ 1,645   $ 1,645  
v3.5.0.2
Goodwill and Intangible Assets (Schedule of Goodwill and Intangible Assets) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Jun. 30, 2016
Dec. 31, 2015
Jun. 30, 2015
Dec. 31, 2014
Goodwill and Intangible Assets [Roll Forward]                
Total goodwill, beginning of period $ 382,762 $ 382,537 $ 382,762 $ 382,537        
Goodwill, Purchase Accounting Adjustments 0 225 0 225        
Total goodwill, end of period 382,762 382,762 382,762 382,762        
CDI current period amortization (1,460) (1,695) (4,526) (5,230)        
Indefinite-Lived Intangible Assets (Excluding Goodwill) 919 919 919 919        
Other intangible assets, net 19,051 25,229 19,051 25,229   $ 23,577    
Total goodwill and intangible assets, end of period 401,813 407,991 $ 401,813 407,991        
Core Deposits [Member]                
Goodwill and Intangible Assets [Line Items]                
Estimated life of CDI, in years     10 years          
Goodwill and Intangible Assets [Roll Forward]                
Gross core deposit intangible balance, beginning of period         $ 58,598 58,598 $ 58,598 $ 58,598
Accumulated amortization at beginning of period         $ (39,006) $ (35,940) $ (32,593) $ (29,058)
Core deposit intangible, net, beginning of period 19,592 26,005 $ 22,658 29,540        
CDI current period amortization (1,460) (1,695) (4,526) (5,230)        
Total core deposit intangible, end of period $ 18,132 $ 24,310 $ 18,132 $ 24,310        
v3.5.0.2
Goodwill and Intangible Assets (Estimated Future Amortization Expense of Core Deposit Intangibles) (Details)
$ in Thousands
Sep. 30, 2016
USD ($)
Future Amortization Expense For Core Deposit Intangibles  
2016 $ 1,419
2017 4,913
2018 3,855
2019 2,951
2020 $ 2,048
v3.5.0.2
Derivatives and Balance Sheet Offsetting (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Derivative [Line Items]          
Gain (Loss) on Derivative Instruments, Net, Pretax $ 9 $ (6) $ 2 $ (2)  
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement 69,189   69,189    
Secured Borrowings, Gross, Difference, Amount 0   0    
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]          
Derivative [Line Items]          
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement 69,189   69,189    
Maturity Overnight [Member] | U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]          
Derivative [Line Items]          
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement 44,189   44,189    
Maturity Less than 30 Days [Member] | U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]          
Derivative [Line Items]          
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement 0   0    
Maturity 30 to 90 Days [Member] | U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]          
Derivative [Line Items]          
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement 0   0    
Maturity Greater than 90 Days [Member] | U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]          
Derivative [Line Items]          
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement 25,000   25,000    
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member]          
Derivative [Line Items]          
Derivative, Notional Amount 286,500   286,500   $ 264,400
Not Designated as Hedging Instrument [Member] | Other Assets [Member] | Interest Rate Contracts [Member]          
Derivative [Line Items]          
Fair value of asset derivative instruments 19,803   19,803   12,438
Not Designated as Hedging Instrument [Member] | Other Liabilities [Member] | Interest Rate Contracts [Member]          
Derivative [Line Items]          
Fair value of liability derivative instruments $ 19,841   $ 19,841   $ 12,478
v3.5.0.2
Derivatives and Balance Sheet Offsetting Balance Sheet Offsetting (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Balance Sheet Offsetting [Line Items]    
Repurchase agreements, amounts offset in balance sheet $ 0 $ 0
Repurchase agreements, net amount presented in statement of financial position 69,189 99,699
Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Securities (69,189) (99,699)
Securities sold under agreements to repurchase, amount not offset 0 0
Interest Rate Contracts [Member]    
Balance Sheet Offsetting [Line Items]    
Derivative Assets, Gross Amounts Offset in the Balance Sheets 0 0
Derivative Asset 19,803 12,438
Derivative, Collateral, Obligation to Return Securities 0 0
Derivative Asset, Fair Value, Amount Not Offset Against Collateral 19,803 12,438
Derivative Liability, Gross Amounts Offset in Balance Sheets 0 0
Derivative Liability 19,841 12,478
Derivative, Collateral, Right to Reclaim Securities (19,841) (12,478)
Derivative Liability, Fair Value, Amount Not Offset Against Collateral 0 0
Available-for-sale Securities [Member]    
Balance Sheet Offsetting [Line Items]    
Securities Sold under Agreements to Repurchase, Gross 69,189 99,699
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member] | Other Assets [Member]    
Balance Sheet Offsetting [Line Items]    
Fair value of asset derivative instruments 19,803 12,438
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member] | Other Liabilities [Member]    
Balance Sheet Offsetting [Line Items]    
Fair value of liability derivative instruments $ 19,841 $ 12,478
v3.5.0.2
Commitments and Contingent Liabilities (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2016
Aug. 24, 2016
Dec. 31, 2015
Other Commitments [Line Items]        
Sale Leaseback Transaction, Deferred Gain, Gross     $ 742  
Sale Leaseback Transaction, Deferred Gain, Net $ 730 $ 730    
Commitments to Extend Credit [Member]        
Other Commitments [Line Items]        
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability 2,100,000 2,100,000   $ 1,930,000
Standby Letters of Credit [Member]        
Other Commitments [Line Items]        
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability 48,400 48,400   38,700
Commercial Letter of Credit and other off-balance sheet liabilities [Member]        
Other Commitments [Line Items]        
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability 6,600 6,600   $ 5,000
Branch consolidation [Member]        
Other Commitments [Line Items]        
Increase (Decrease) in Restructuring Reserve 849      
Restructuring and Related Cost, Incurred Cost $ 857 $ 883    
v3.5.0.2
Shareholders' Equity (Details) - $ / shares
Oct. 27, 2016
Jul. 28, 2016
Apr. 27, 2016
Jan. 28, 2016
Subsequent Event [Line Items]        
Declared quarterly cash dividend   $ 0.20 $ 0.19 $ 0.18
Special Dividends Payable, Amount Per Share   $ 0.19 $ 0.18 $ 0.20
Subsequent Event [Member]        
Subsequent Event [Line Items]        
Declared quarterly cash dividend $ 0.20      
Special Dividends Payable, Amount Per Share $ 0.19      
v3.5.0.2
Shareholders' Equity Narrative (Details)
Sep. 30, 2016
shares
Shareholders' Equity [Abstract]  
Preferred Stock Converted Into Common Stock, Shares 102,363
v3.5.0.2
Accumulated Other Comprehensive Income (Changes in AOCI by Component) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Beginning balance [1] $ 20,811 $ 2,789 $ (6,295) $ 5,621
Other comprehensive loss before reclassifications [1] (4,049) 10,126 23,229 7,881
Amounts reclassified from accumulated other comprehensive income (loss) [1] (257) (89) (429) (676)
Net current-period other comprehensive income (loss) [1] (4,306) 10,037 22,800 7,205
Ending balance [1] 16,505 12,826 16,505 12,826
Unrealized Gains and Losses on Available-for-Sale Securities [Member]        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Beginning balance [1] 27,280 4,819 386 7,462
Other comprehensive loss before reclassifications [1] (4,049) 10,126 23,229 8,161
Amounts reclassified from accumulated other comprehensive income (loss) [1] (364) (151) (748) (829)
Net current-period other comprehensive income (loss) [1] (4,413) 9,975 22,481 7,332
Ending balance [1] 22,867 14,794 22,867 14,794
Unrealized Gains and Losses on Pension Plan Liability [Member]        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Beginning balance [1] (6,469) (2,030) (6,681) (1,841)
Other comprehensive loss before reclassifications [1] 0 0 0 (280)
Amounts reclassified from accumulated other comprehensive income (loss) [1] 107 62 319 153
Net current-period other comprehensive income (loss) [1] 107 62 319 (127)
Ending balance [1] $ (6,362) $ (1,968) $ (6,362) $ (1,968)
[1] All amounts are net of tax. Amounts in parenthesis indicate debits.
v3.5.0.2
Accumulated Other Comprehensive Income (Reclassification out of AOCI) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Investment securities gains, net     $ 1,174 $ 1,300
Compensation and employee benefits $ 38,476 $ 35,175 112,086 112,721
Total before tax 39,608 37,295 106,746 104,282
Income tax provision (12,124) (11,515) (32,598) (32,195)
Net income 27,484 25,780 74,148 72,087
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains and Losses on Available-for-Sale Securities [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Investment securities gains, net 572 236 1,174 1,300
Total before tax 572 236 1,174 1,300
Income tax provision (208) (85) (426) (471)
Net income 364 151 748 829
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains and Losses on Pension Plan Liability [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Compensation and employee benefits (167) (97) (501) (240)
Total before tax (167) (97) (501) (240)
Income tax provision 60 35 182 87
Net income $ (107) $ (62) $ (319) $ (153)
v3.5.0.2
Fair Value Accounting and Measurement (Financial Assets And Liabilities Accounted for Fair Value On Recurring Basis) (Details) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2016
Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale $ 2,360,084 $ 2,157,694
Fair Value, Level 2 to level 1 Transfers, Amount 0  
Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale $ 2,360,084 2,157,694
Other assets (Interest rate contracts) 19,803 12,438
Other liabilities (Interest rate contracts) 19,841 12,478
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale 548 20,137
Other assets (Interest rate contracts) 0 0
Other liabilities (Interest rate contracts) 0 0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale 2,359,536 2,137,557
Other assets (Interest rate contracts) 19,803 12,438
Other liabilities (Interest rate contracts) 19,841 12,478
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale 0 0
Other assets (Interest rate contracts) 0 0
Other liabilities (Interest rate contracts) 0 0
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale 1,512,924 1,286,489
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale 0 0
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale 1,512,924 1,286,489
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale 0 0
State and Municipal Securities [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale 503,118 492,169
State and Municipal Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale 0 0
State and Municipal Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale 503,118 492,169
State and Municipal Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale 0 0
U.S. Government Agency [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale 338,292 353,782
U.S. Government Agency [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale 0 0
U.S. Government Agency [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale 338,292 353,782
U.S. Government Agency [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale 0 0
US Government Securities [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale 548 20,137
US Government Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale 548 20,137
US Government Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale 0 0
US Government Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale 0 0
Other Securities [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale 5,202 5,117
Other Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale 0 0
Other Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale 5,202 5,117
Other Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale $ 0 $ 0
v3.5.0.2
Fair Value Accounting and Measurement (Financial Assets Accounted For Fair Value On Nonrecurring Basis) (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Impaired loans $ 2,304 $ 350 $ 2,304 $ 350
Fair Value, Option, Changes in Fair Value, Gain (Loss) (661) (1,658) (3,299) (1,674)
OREO 335 3,286 335 3,286
Assets, Fair Value Disclosure 2,639 3,636 2,639 3,636
Fair Value, Inputs, Level 1 [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Impaired loans 0 0 0 0
OREO 0 0 0 0
Assets, Fair Value Disclosure 0 0 0 0
Fair Value, Inputs, Level 2 [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Impaired loans 0 0 0 0
OREO 0 0 0 0
Assets, Fair Value Disclosure 0 0 0 0
Fair Value, Inputs, Level 3 [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Impaired loans 2,304 350 2,304 350
OREO 335 3,286 335 3,286
Assets, Fair Value Disclosure 2,639 3,636 2,639 3,636
Impaired Loans [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Fair Value, Option, Changes in Fair Value, Gain (Loss) (647) (1,012) (3,285) (1,012)
Other Real Estate Owned [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Fair Value, Option, Changes in Fair Value, Gain (Loss) $ (14) $ (646) $ (14) $ (662)
v3.5.0.2
Fair Value Accounting and Measurement (Quantitative Information About Level 3 Fair Value Measurements) (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($)
$ in Thousands
 3 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Impaired loans $ 2,304 $ 350
OREO 335 3,286
Fair Value, Inputs, Level 3 [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Impaired loans 2,304 350
OREO 335 3,286
Collateral Dependent [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Impaired loans 943 $ 350
Other Collateral [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Impaired loans $ 1,361  
Other Collateral [Member] | Market Approach Valuation Technique [Member] | Impaired Loans [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair Value Inputs, Comparability Adjustments [1]   0.00%
Fair Value Inputs, Discount Rate [2],[3] 2.85%  
Other Collateral [Member] | Market Approach Valuation Technique [Member] | Impaired Loans [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair Value Inputs, Comparability Adjustments [1]   0.00%
Fair Value Inputs, Discount Rate [2],[3] 6.50%  
Other Collateral [Member] | Market Approach Valuation Technique [Member] | Impaired Loans [Member] | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Fair Value Inputs, Comparability Adjustments [1]   0.00%
Fair Value Inputs, Discount Rate [2],[3] 3.85%  
[1] As there was only one impaired loan remeasured, a range of discounts could not be provided. The collateral for this loan consisted of non-proprietary software.
[2] Collateral consists of fixed assets and account receivable.
[3] Discount rate used in discounted cash flow valuation.
v3.5.0.2
Fair Value Accounting and Measurement (Carrying Amounts and Estimated Fair Values of Selected Financial Instruments) (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Assets    
Interest-earning deposits with banks $ 11,225 $ 8,373
Securities available for sale 2,360,084 2,157,694
Carrying (Reported) Amount, Fair Value Disclosure [Member]    
Assets    
Cash and due from banks 180,839 166,929
Interest-earning deposits with banks 11,225 8,373
Securities available for sale 2,360,084 2,157,694
FHLB stock 12,640 12,722
Loans held for sale 3,361 4,509
Loans 6,189,493 5,746,855
FDIC loss-sharing asset 3,592 6,568
Interest rate contracts 19,803 12,438
Liabilities    
Deposits 8,057,816 7,438,829
FHLB Advances 66,502 68,531
Repurchase agreements 69,189 99,699
Interest rate contracts 19,841 12,478
Estimate of Fair Value, Fair Value Disclosure [Member]    
Assets    
Cash and due from banks 180,839 166,929
Interest-earning deposits with banks 11,225 8,373
Securities available for sale 2,360,084 2,157,694
FHLB stock 12,640 12,722
Loans held for sale 3,361 4,509
Loans 6,274,917 5,752,423
FDIC loss-sharing asset 594 921
Interest rate contracts 19,803 12,438
Liabilities    
Deposits 8,054,970 7,434,787
FHLB Advances 67,826 69,176
Repurchase agreements 69,543 100,346
Interest rate contracts 19,841 12,478
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]    
Assets    
Cash and due from banks 180,839 166,929
Interest-earning deposits with banks 11,225 8,373
Securities available for sale 548 20,137
FHLB stock 0 0
Loans held for sale 0 0
Loans 0 0
FDIC loss-sharing asset 0 0
Interest rate contracts 0 0
Liabilities    
Deposits 7,645,310 6,979,924
FHLB Advances 0 0
Repurchase agreements 0 0
Interest rate contracts 0 0
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]    
Assets    
Cash and due from banks 0 0
Interest-earning deposits with banks 0 0
Securities available for sale 2,359,536 2,137,557
FHLB stock 12,640 12,722
Loans held for sale 3,361 4,509
Loans 0 0
FDIC loss-sharing asset 0 0
Interest rate contracts 19,803 12,438
Liabilities    
Deposits 409,660 454,863
FHLB Advances 67,826 69,176
Repurchase agreements 69,543 100,346
Interest rate contracts 19,841 12,478
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]    
Assets    
Cash and due from banks 0 0
Interest-earning deposits with banks 0 0
Securities available for sale 0 0
FHLB stock 0 0
Loans held for sale 0 0
Loans 6,274,917 5,752,423
FDIC loss-sharing asset 594 921
Interest rate contracts 0 0
Liabilities    
Deposits 0 0
FHLB Advances 0 0
Repurchase agreements 0 0
Interest rate contracts $ 0 $ 0
v3.5.0.2
Earnings per Common Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]        
Net Income $ 27,484 $ 25,780 $ 74,148 $ 72,087
Earnings allocated to participating securities - preferred shares 48 45 131 127
Earnings allocated to participating securities - nonvested restricted shares 378 296 953 772
Earnings allocated to common shareholders, Basic $ 27,058 $ 25,439 $ 73,064 $ 71,188
Weighted average common shares outstanding 57,215 57,051 57,173 57,007
Basic earnings per common share $ 0.47 $ 0.45 $ 1.28 $ 1.25
Earnings allocated to common shareholders, Diluted [1] $ 27,058 $ 25,439 $ 73,064 $ 71,188
Dilutive effect of equity awards and warrants 10 13 10 14
Weighted average diluted common shares outstanding 57,225 57,064 57,183 57,021
Diluted earnings per common share $ 0.47 $ 0.45 $ 1.28 $ 1.25
Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive. 15 29 20 40
[1] Earnings allocated to common shareholders for basic and diluted EPS may differ under the two-class method as a result of adding common stock equivalents for options and warrants to dilutive shares outstanding, which alters the ratio used to allocate earnings to common shareholders and participating securities for the purposes of calculating diluted EPS.