COLUMBIA BANKING SYSTEM, INC., 10-Q filed on 8/9/2017
Quarterly Report
v3.7.0.1
Document and Entity Information - shares
 6 Months Ended
Jun. 30, 2017
Jul. 31, 2017
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2017  
Document Fiscal Year Focus 2017  
Document Fiscal Period Focus Q2  
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   58,380,971
v3.7.0.1
Consolidated Balance Sheets - USD ($)
shares in Thousands, $ in Thousands
Jun. 30, 2017
Dec. 31, 2016
ASSETS    
Cash and due from banks $ 197,623 $ 193,038
Interest-earning deposits with banks 14,425 31,200
Total cash and cash equivalents 212,048 224,238
Securities available for sale at fair value (amortized cost of $2,272,959 and $2,299,037, respectively) 2,264,636 2,278,577
Federal Home Loan Bank stock at cost 16,360 10,240
Loans held for sale 6,918 5,846
Loans, net of unearned income of ($30,665) and ($33,718), respectively 6,423,074 6,213,423
Less: allowance for loan and lease losses 72,984 70,043
Loans, net 6,350,090 6,143,380
FDIC loss-sharing asset 0 3,535
Interest receivable 30,856 30,074
Premises and equipment, net 146,728 150,342
Other real estate owned 4,058 5,998
Goodwill 382,762 382,762
Other intangible assets, net 15,033 17,631
Other assets 255,621 256,984
Total assets 9,685,110 9,509,607
LIABILITIES AND SHAREHOLDERS' EQUITY    
Noninterest-bearing 3,905,652 3,944,495
Interest-bearing 4,166,812 4,114,920
Total deposits 8,072,464 8,059,415
Federal Home Loan Bank advances 159,474 6,493
Securities sold under agreements to repurchase 65,895 80,822
Other liabilities 89,963 111,865
Total liabilities 8,387,796 8,258,595
Commitments and contingent liabilities (Note 10)
Shareholders' equity:    
Preferred Stock, Shares Authorized 2,000 2,000
Preferred Stock, Shares Issued 0 9
Preferred Stock, Value, Issued $ 0 $ 2,217
Authorized shares 115,000 115,000
Common Stock Shares Issued And Outstanding 58,353 58,042
Common Stock (no par value) $ 1,001,292 $ 995,837
Retained earnings 302,550 271,957
Accumulated other comprehensive loss [1] (6,528) (18,999)
Total shareholders’ equity 1,297,314 1,251,012
Total liabilities and shareholders’ equity $ 9,685,110 $ 9,509,607
[1] All amounts are net of tax. Amounts in parenthesis indicate debits.
v3.7.0.1
Consolidated Balance Sheets (Parenthetical) - USD ($)
shares in Thousands, $ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Securities available-for-sale, amortized cost $ 2,272,959 $ 2,299,037
Less: unearned income on loans $ (30,665) $ (33,718)
Common stock, par value $ 0 $ 0
Authorized shares 115,000 115,000
Common stock, shares outstanding 58,353 58,042
v3.7.0.1
Consolidated Statements of Income - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Interest Income        
Loans $ 75,579 $ 71,651 $ 149,699 $ 141,967
Taxable securities 9,468 8,829 20,454 16,846
Tax-exempt securities 2,716 2,795 5,407 5,598
Deposits in banks 23 28 42 66
Total interest income 87,786 83,303 175,602 164,477
Interest Expense        
Deposits 908 787 1,695 1,529
Federal Home Loan Bank advances 591 241 816 365
Other borrowings 126 135 255 273
Total interest expense 1,625 1,163 2,766 2,167
Net Interest Income 86,161 82,140 172,836 162,310
Provision for loan and lease losses 3,177 3,640 5,952 8,894
Net interest income after provision for loan and lease losses 82,984 78,500 166,884 153,416
Noninterest Income        
Deposit account and treasury management fees 7,396 7,093 14,683 14,082
Card revenue 6,202 6,051 11,925 11,703
Financial services and trust revenue 3,036 2,780 5,875 5,601
Loan revenue 2,989 2,802 6,582 5,064
Merchant processing revenue 2,264 2,272 4,283 4,374
Bank owned life insurance 1,433 1,270 2,713 2,386
Investment securities gains 0 229 0 602
Change in FDIC loss-sharing asset (173) (990) (447) (2,093)
Other 988 433 3,380 867
Total noninterest income 24,135 21,940 48,994 42,586
Noninterest Expense        
Compensation and employee benefits 38,393 37,291 79,218 73,610
Occupancy 7,577 7,652 14,768 17,825
Merchant processing expense 1,147 1,118 2,196 2,151
Advertising and promotion 1,137 1,043 1,954 1,885
Data processing 4,741 3,929 8,949 8,075
Legal and professional fees 2,947 1,777 6,316 3,102
Taxes, licenses and fees 748 1,298 1,989 2,588
Regulatory premiums 741 1,068 1,517 2,209
Net cost (benefit) of operation of other real estate owned (1) 84 151 188
Amortization of intangibles 1,249 1,483 2,598 3,066
Other 10,188 7,047 18,197 14,165
Total noninterest expense 68,867 63,790 137,853 128,864
Income before income taxes 38,252 36,650 78,025 67,138
Income tax provision 11,120 11,245 21,694 20,474
Net Income $ 27,132 $ 25,405 $ 56,331 $ 46,664
Earnings per common share        
Basic ($ per share) $ 0.47 $ 0.44 $ 0.97 $ 0.80
Diluted ($ per share) 0.47 0.44 0.97 0.80
Dividends paid per common share $ 0.22 $ 0.37 $ 0.44 $ 0.75
Weighted average number of common shares outstanding 57,520 57,185 57,437 57,149
Weighted average number of diluted common shares outstanding 57,525 57,195 57,442 57,160
v3.7.0.1
Consolidated Statements of Comprehensive Income - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Net income $ 27,132 $ 25,405 $ 56,331 $ 46,664
Unrealized gain from securities:        
Net unrealized holding loss from available for sale securities arising during the period 6,033 8,508 7,735 27,278
Reclassification adjustment of net gain from sale of available for sale securities included in income 0 (146) 0 (384)
Net unrealized gain from securities, net of reclassification adjustment 6,033 8,362 7,735 26,894
Pension plan liability adjustment:        
Unrecognized net actuarial gain (loss) during the period     4,604 0
Less: amortization of unrecognized net actuarial loss included in net periodic pension cost 45 106 132 212
Pension plan liability adjustment, net 45 106 4,736 212
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [1] 6,078 8,468 12,471 27,106
Total comprehensive income $ 33,210 $ 33,873 $ 68,802 $ 73,770
[1] All amounts are net of tax. Amounts in parenthesis indicate debits.
v3.7.0.1
Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Net unrealized holding gain (loss) from available for sale securities arising during the period, tax $ (3,435) $ (4,844) $ (4,404) $ (15,530)
Reclassification adjustment of net gain from sale of available for sale securities included in income, tax 0 83 0 218
Net unrealized loss from unfunded defined benefit plan liability arising during the period, tax 0 0 (2,622) 0
Less: amortization of unrecognized net actuarial loss included in net periodic pension cost, tax $ (26) $ (61) $ (75) $ (122)
v3.7.0.1
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, 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 46,664   46,664    
Other comprehensive income 27,106     27,106  
Issuance of common stock - stock option and other plans, value 603 $ 603      
Issuance of common stock - stock option and other plans, shares   21,000      
Issuance of common stock - restricted stock awards, net of cancelled awards, value 2,551 $ 2,551      
Issuance of common stock - restricted stock awards, net of cancelled awards, shares   317,000      
Stock Repurchased and Retired During Period, Value (1,092) $ (1,092)      
Stock Repurchased During Period, Shares   (37,000)      
Dividends, Preferred Stock, Cash (77)   (77)    
Cash dividends paid on common stock (43,404)   (43,404)    
Balance, value at Jun. 30, 2016 1,274,479 $ 992,343 259,108 20,811 $ 2,217
Balance, shares at Jun. 30, 2016   58,025,000     9,000
Cumulative Effect of New Accounting Principle in Period of Adoption | Accounting Standards Update 2016-09 [Member] 67 $ 184 (117)    
Balance, value at Dec. 31, 2016 1,251,012 $ 995,837 271,957 (18,999) $ 2,217
Balance, shares at Dec. 31, 2016   58,042,000     8,782
Net income 56,331   56,331    
Other comprehensive income 12,471     12,471  
Issuance of common stock - stock option and other plans, value 1,155 $ 1,155      
Issuance of common stock - stock option and other plans, shares   28,000      
Issuance of common stock - restricted stock awards, net of cancelled awards, value 4,114 $ 4,114      
Conversion of Stock, Shares Converted         (9,000)
Conversion of Stock, Amount Converted         $ (2,217)
Conversion of Stock, New Issuance   102,000      
Conversion of Stock, Amount Issued 0 $ 2,217      
Issuance of common stock - restricted stock awards, net of cancelled awards, shares   235,000      
Stock Repurchased and Retired During Period, Value (2,215) $ (2,215)      
Stock Repurchased During Period, Shares   (54,000)      
Cash dividends paid on common stock (25,621)   (25,621)    
Balance, value at Jun. 30, 2017 $ 1,297,314 $ 1,001,292 $ 302,550 $ (6,528) $ 0
Balance, shares at Jun. 30, 2017   58,353,000     0
v3.7.0.1
Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
FDIC loss-sharing agreement early termination, pretax loss $ 2,409 $ 0
Cash Flows From Operating Activities    
Net income 56,331 46,664
Adjustments to reconcile net income to net cash provided by operating activities    
Provision for loan and lease losses 5,952 8,894
Stock-based compensation expense 4,114 2,551
Depreciation, amortization and accretion 13,968 18,898
Investment securities gains 0 602
Net realized (gain) loss on sale of premises and equipment, loans held for investment and other assets (176) 170
Net realized loss on sale and valuation adjustments of other real estate owned (221) (160)
Originations of loans held for sale 65,902 46,705
Proceeds from sales of loans held for sale 64,830 43,565
Net change in:    
Interest receivable (782) (1,861)
Interest payable 35 (74)
Other assets (5,987) (7,818)
Other liabilities (9,230) 9,809
Net cash provided by operating activities 65,783 73,651
Cash Flows From Investing Activities    
Loans originated and acquired, net of principal collected (216,541) (298,259)
Purchases of securities available for sale (114,309) (296,920)
Purchases of premises and equipment (1,947) (1,199)
Payments to Acquire Federal Home Loan Bank Stock (86,840) (42,400)
Proceeds from FDIC for reimbursement on loss-sharing asset 26 668
Proceeds from sales of securities available for sale 0 83,410
Proceeds from principal repayments and maturities of securities available for sale 131,472 123,817
Proceeds from Sales of Assets, Investing Activities 8,133 4,631
Proceeds from Sale of Federal Home Loan Bank Stock 80,720 36,961
Proceeds from sales of other real estate and other personal property owned 1,719 3,276
Payment to FDIC to terminate loss-sharing agreements (4,666) 0
Payments to FDIC related to loss-sharing asset (210) (625)
Net cash used in investing activities (202,443) (386,640)
Cash Flows From Financing Activities    
Net increase in deposits 13,078 234,526
Net decrease in sweep repurchase agreements (14,927) (10,481)
Proceeds from Federal Home Loan Bank advances 2,171,000 962,000
Federal Reserve Bank borrowings 10 10
Proceeds from exercise of stock options 1,155 603
Repayment of Federal Home Loan Bank advances (2,018,000) (826,000)
Repayment of Federal Reserve Bank borrowings 10 10
Payment of common stock dividends (25,621) (43,404)
Preferred stock dividends 0 (77)
Purchase and retirement of common stock 2,215 1,092
Net cash provided by financing activities 124,470 316,075
Increase (decrease) in cash and cash equivalents (12,190) 3,086
Cash and cash equivalents at beginning of period 224,238 175,302
Cash and cash equivalents at end of period 212,048 178,388
Supplemental Information:    
Cash paid for interest 2,731 2,241
Cash paid for income tax 22,881 11,130
Non-cash investing and financing activities    
Loans transferred to other real estate owned $ 0 $ 311
v3.7.0.1
Basis of Presentation and Significant Accounting Policies
 6 Months Ended
Jun. 30, 2017
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 six months ended June 30, 2017 are not necessarily indicative of results to be anticipated for the year ending December 31, 2017. The accompanying interim unaudited Consolidated Financial Statements should be read in conjunction with the financial statements and related notes contained in the Company’s 2016 Annual Report on Form 10-K.
Significant Accounting Policies
The significant accounting policies used in preparation of our Consolidated Financial Statements are disclosed in our 2016 Annual Report on Form 10-K. There have not been any changes in our significant accounting policies compared to those contained in our 2016 Form 10-K disclosure for the year ended December 31, 2016.
v3.7.0.1
Accounting Pronouncements Recently Issued
 6 Months Ended
Jun. 30, 2017
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]  
Accounting Pronouncements Recently Issued
Accounting Pronouncements Recently Issued
In May 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-09, Scope of Modification Accounting. The amendments in this ASU provide guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting. The amendments in ASU 2017-09 are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. Early adoption is permitted. The adoption of ASU 2017-09 is not expected to have a material impact on the Company’s consolidated financial statements.
In March 2017, the FASB issued ASU 2017-08, Premium Amortization on Purchased Callable Debt Securities. The amendments included in this ASU change guidance on the amortization period of premiums on certain purchased callable debt securities. Specifically, the amendments shorten the premium amortization period to the earliest call date. The amendments in ASU 2017-08 are effective for fiscal years and interim periods within those years, beginning after December 15, 2018. Early adoption is permitted. The Company early adopted the amendments of ASU 2017-08 during the first quarter of 2017. The impact of the adoption of ASU 2017-08 to net income and opening retained earnings was not material.
In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment. The amendments in this are intended to reduce the cost and complexity of the goodwill impairment test by eliminating the second step of the goodwill impairment test. An entity will apply a one-step quantitative test and record the amount of goodwill impairment as the excess of a reporting unit’s carrying amount over its fair value, not to exceed the total amount of goodwill allocated to the reporting unit. The new guidance does not amend the optional qualitative assessment of goodwill impairment. The amendments in ASU 2017-04 are effective for annual or interim periods beginning after December 15, 2019. Early adoption is permitted. The adoption of ASU 2017-04 is not expected to have a material impact on the Company’s 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 will 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.
Currently, the Company cannot reasonably estimate the impact that adoption of ASU 2016-13 will have on its Consolidated Financial Statements; however, the impact may be significant. That assessment is based upon the fact that, unlike the incurred loss models in existing GAAP, the current expected credit loss (“CECL”) model in ASU 2016-13 does not specify a threshold for the recognition of an impairment allowance. Rather, the Company will recognize an impairment allowance equal to its estimate of lifetime expected credit losses, adjusted for prepayments, for in-scope financial instruments as of the end of the reporting period. Accordingly, the impairment allowance measured under the CECL model could increase significantly from the impairment allowance measured under the Company’s existing incurred loss model. Significant CECL implementation matters to be addressed by the Company include selecting loss estimation methodologies, identifying, sourcing and storing data, addressing data gaps, defining a reasonable and supportable forecast period, selecting historical loss information which will be reverted to, documenting the CECL estimation process, assessing the impact to internal controls over financial reporting, capital planning and seeking process approval from audit and regulatory stakeholders.
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 Company adopted the amendments of ASU 2016-09 during the first quarter of 2017. Adoption of amended forfeiture guidance resulted in an opening period adjustment decreasing retained earnings $117 thousand and increasing common stock $184 thousand. Adoption of the amended excess tax benefit guidance resulted in an income tax benefit of $100 thousand for the three months ended June 30, 2017 and an income tax benefit of $1.3 million or $0.02 per diluted common share for the six months ended June 30, 2017.
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, initially measured as the present value of future lease payments, and corresponding right-of-use assets for all leases with lease terms greater than 12 months. This model differs from the current lease accounting model, which does not require such lease liabilities and corresponding right-of-use assets to be recorded for operating leases. 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. Significant implementation matters to be addressed by the Company include selecting a third-party lease accounting application, assessing the impact to its Consolidated Financial Statements and internal controls over financial reporting and documenting the new lease accounting process. See Note 17, “Commitments and Contingent Liabilities” to our 2016 Form 10-K, for more information regarding the minimum future payments related to our operating leases.
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. The FASB subsequently issued ASU 2016-08, ASU 2016-10 and ASU 2016-12 to provide implementation guidance and practical expedients related to ASU 2014-09. The Company’s revenue is comprised of interest income on financial assets, which is excluded from the scope of this new guidance, and non-interest income. The adoption of ASU 2017-04 is not expected to have a material impact on the Company’s consolidated financial statements.
v3.7.0.1
Securities
 6 Months Ended
Jun. 30, 2017
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)
June 30, 2017
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations
 
$
1,438,875

 
$
3,478

 
$
(18,395
)
 
$
1,423,958

State and municipal securities
 
476,510

 
9,279

 
(2,696
)
 
483,093

U.S. government agency and government-sponsored enterprise securities
 
352,039

 
1,486

 
(1,287
)
 
352,238

U.S. government securities
 
251

 
—

 
(1
)
 
250

Other securities
 
5,284

 
70

 
(257
)
 
5,097

Total
 
$
2,272,959

 
$
14,313

 
$
(22,636
)
 
$
2,264,636

December 31, 2016
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations
 
$
1,486,690

 
$
2,760

 
$
(23,718
)
 
$
1,465,732

State and municipal securities
 
473,914

 
6,343

 
(5,197
)
 
475,060

U.S. government agency and government-sponsored enterprise securities
 
332,348

 
1,065

 
(1,511
)
 
331,902

U.S. government securities
 
801

 
—

 
(1
)
 
800

Other securities
 
5,284

 
63

 
(264
)
 
5,083

Total
 
$
2,299,037

 
$
10,231

 
$
(30,691
)
 
$
2,278,577



The following table provides the proceeds and gross realized gains and losses on the sales of securities for the periods indicated:
 
 
Three Months Ended
 
Six Months Ended
 
 
June 30,
 
June 30,
 
 
2017
 
2016
 
2017
 
2016
 
 
(in thousands)
Proceeds from sales of available for sale securities
 
$
—

 
$
44,534

 
$
—

 
$
83,410

 
 
 
 
 
 
 
 
 
Gross realized gains
 
$
—

 
$
229

 
$
—

 
$
602

Gross realized losses
 
—

 
—

 
—

 
—

Net realized gains
 
$
—

 
$
229

 
$
—

 
$
602


The scheduled contractual maturities of investment securities available for sale at June 30, 2017 are presented as follows:
 
 
June 30, 2017
 
 
Amortized Cost
 
Fair Value
 
 
(in thousands)
Due within one year
 
$
99,775

 
$
99,740

Due after one year through five years
 
461,043

 
464,716

Due after five years through ten years
 
726,133

 
724,520

Due after ten years
 
980,724

 
970,563

Other securities with no stated maturity
 
5,284

 
5,097

Total investment securities available-for-sale
 
$
2,272,959

 
$
2,264,636


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:
 
 
June 30, 2017
 
 
(in thousands)
Washington and Oregon State to secure public deposits
 
$
244,580

Federal Reserve Bank to secure borrowings
 
54,877

Other securities pledged
 
122,932

Total securities pledged as collateral
 
$
422,389


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 June 30, 2017 and December 31, 2016:
 
 
Less than 12 Months
 
12 Months or More
 
Total
 
 
Fair
Value
 
Unrealized
Losses
 
Fair
Value
 
Unrealized
Losses
 
Fair
Value
 
Unrealized
Losses
 
 
(in thousands)
June 30, 2017
 
 
 
 
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations
 
$
858,558

 
$
(12,683
)
 
$
180,212

 
$
(5,712
)
 
$
1,038,770

 
$
(18,395
)
State and municipal securities
 
108,038

 
(2,189
)
 
13,246

 
(507
)
 
121,284

 
(2,696
)
U.S. government agency and government-sponsored enterprise securities
 
194,738

 
(1,287
)
 
—

 
—

 
194,738

 
(1,287
)
U.S. government securities
 
251

 
(1
)
 
—

 
—

 
251

 
(1
)
Other securities
 
2,276

 
(39
)
 
2,737

 
(218
)
 
5,013

 
(257
)
Total
 
$
1,163,861

 
$
(16,199
)
 
$
196,195

 
$
(6,437
)
 
$
1,360,056

 
$
(22,636
)
 
 
 
 
 
 
 
 
 
 
 
 
 
December 31, 2016
 
 
 
 
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations
 
$
1,029,116

 
$
(18,788
)
 
$
159,046

 
$
(4,930
)
 
$
1,188,162

 
$
(23,718
)
State and municipal securities
 
211,342

 
(5,064
)
 
3,384

 
(133
)
 
214,726

 
(5,197
)
U.S. government agency and government-sponsored enterprise securities
 
218,811

 
(1,511
)
 
—

 
—

 
218,811

 
(1,511
)
U.S. government securities
 
251

 
(1
)
 
—

 
—

 
251

 
(1
)
Other securities
 
2,263

 
(51
)
 
2,743

 
(213
)
 
5,006

 
(264
)
Total
 
$
1,461,783

 
$
(25,415
)
 
$
165,173

 
$
(5,276
)
 
$
1,626,956

 
$
(30,691
)

At June 30, 2017, there were 172 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations securities in an unrealized loss position, of which 54 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 June 30, 2017.
At June 30, 2017, there were 99 state and municipal government securities in an unrealized loss position, of which 11 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 June 30, 2017, 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 June 30, 2017.
At June 30, 2017, there were 22 U.S. government agency and government-sponsored enterprise securities in an unrealized loss position, of which none 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 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 June 30, 2017.
At June 30, 2017, there was one U.S. government security in an unrealized loss position, which was not 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 this investment falls within the yield curve and its individual characteristics. Because the Company does not currently intend to sell this security nor does the Company consider it more likely than not that it will be required to sell this security before the recovery of amortized cost basis, which may be upon maturity, the Company does not consider this investment to be other-than-temporarily impaired at June 30, 2017.
At June 30, 2017, there were two other securities in an unrealized loss position, of which one 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 these investments to be other-than-temporarily impaired at June 30, 2017 as it has the intent and ability to hold these investments for sufficient time to allow for recovery in the market value.
v3.7.0.1
Loans
 6 Months Ended
Jun. 30, 2017
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):
 
 
June 30, 2017
 
December 31, 2016
 
 
Loans, excluding PCI loans
 
PCI Loans
 
Total
 
Loans, excluding PCI loans
 
PCI Loans
 
Total
 
 
(in thousands)
Commercial business
 
$
2,704,468

 
$
15,299

 
$
2,719,767

 
$
2,551,054

 
$
20,185

 
$
2,571,239

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
173,150

 
14,735

 
187,885

 
170,331

 
17,862

 
188,193

Commercial and multifamily residential
 
2,787,560

 
84,385

 
2,871,945

 
2,719,830

 
89,231

 
2,809,061

Total real estate
 
2,960,710

 
99,120

 
3,059,830

 
2,890,161

 
107,093

 
2,997,254

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
139,956

 
453

 
140,409

 
121,887

 
832

 
122,719

Commercial and multifamily residential
 
195,565

 
961

 
196,526

 
209,118

 
1,565

 
210,683

Total real estate construction
 
335,521

 
1,414

 
336,935

 
331,005

 
2,397

 
333,402

Consumer
 
323,187

 
14,020

 
337,207

 
329,261

 
15,985

 
345,246

Less: Net unearned income
 
(30,665
)
 
—

 
(30,665
)
 
(33,718
)
 
—

 
(33,718
)
Total loans, net of unearned income
 
6,293,221

 
129,853

 
6,423,074

 
6,067,763

 
145,660

 
6,213,423

Less: Allowance for loan and lease losses
 
(64,923
)
 
(8,061
)
 
(72,984
)
 
(59,528
)
 
(10,515
)
 
(70,043
)
Total loans, net
 
$
6,228,298

 
$
121,792

 
$
6,350,090

 
$
6,008,235

 
$
135,145

 
$
6,143,380

Loans held for sale
 
$
6,918

 
$
—

 
$
6,918

 
$
5,846

 
$
—

 
$
5,846


At June 30, 2017 and December 31, 2016, 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 both June 30, 2017 and December 31, 2016. During the first six months of 2017, there were $203 thousand in advances and $200 thousand in repayments.
At June 30, 2017 and December 31, 2016, $2.28 billion and $2.29 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 $70.1 million and $54.2 million of commercial loans to the Federal Reserve Bank for additional borrowing capacity at June 30, 2017 and December 31, 2016, respectively.
The following is an analysis of nonaccrual loans as of June 30, 2017 and December 31, 2016:
 
 
June 30, 2017
 
December 31, 2016
 
 
Recorded
Investment
Nonaccrual
Loans
 
Unpaid Principal
Balance
Nonaccrual
Loans
 
Recorded
Investment
Nonaccrual
Loans
 
Unpaid Principal
Balance
Nonaccrual
Loans
 
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
Secured
 
$
24,663

 
$
38,586

 
$
11,524

 
$
21,503

Unsecured
 
84

 
237

 
31

 
303

Real estate:
 
 
 
 
 
 
 
 
One-to-four family residential
 
697

 
1,248

 
568

 
1,302

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
Commercial land
 
3,198

 
3,503

 
934

 
922

Income property
 
3,411

 
3,741

 
4,005

 
4,247

Owner occupied
 
658

 
2,137

 
6,248

 
9,030

Real estate construction:
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
Land and acquisition
 
27

 
27

 
14

 
102

Residential construction
 
214

 
214

 
549

 
549

Consumer
 
3,872

 
4,543

 
3,883

 
4,331

Total
 
$
36,824

 
$
54,236

 
$
27,756

 
$
42,289


Loans, excluding purchased credit impaired loans
The following is an aging of the recorded investment of the loan portfolio as of June 30, 2017 and December 31, 2016:
 
 
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
June 30, 2017
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
2,572,664

 
$
5,227

 
$
1,810

 
$
—

 
$
7,037

 
$
24,663

 
$
2,604,364

Unsecured
 
95,132

 
180

 
23

 
—

 
203

 
84

 
95,419

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
169,244

 
965

 
148

 
—

 
1,113

 
697

 
171,054

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
280,322

 
—

 
—

 
—

 
—

 
3,198

 
283,520

Income property
 
1,351,539

 
561

 
256

 
—

 
817

 
3,411

 
1,355,767

Owner occupied
 
1,126,857

 
2,309

 
943

 
—

 
3,252

 
658

 
1,130,767

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
6,022

 
—

 
—

 
—

 
—

 
27

 
6,049

Residential construction
 
132,953

 
—

 
—

 
—

 
—

 
214

 
133,167

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
153,529

 
—

 
—

 
—

 
—

 
—

 
153,529

Owner occupied
 
35,416

 
4,050

 
—

 
—

 
4,050

 
—

 
39,466

Consumer
 
314,196

 
1,748

 
303

 
—

 
2,051

 
3,872

 
320,119

Total
 
$
6,237,874

 
$
15,040

 
$
3,483

 
$
—

 
$
18,523

 
$
36,824

 
$
6,293,221

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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, 2016
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
2,439,250

 
$
806

 
$
10

 
$
—

 
$
816

 
$
11,524

 
$
2,451,590

Unsecured
 
94,118

 
287

 
301

 
—

 
588

 
31

 
94,737

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
164,416

 
2,448

 
500

 
—

 
2,948

 
568

 
167,932

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
269,816

 
64

 
—

 
—

 
64

 
934

 
270,814

Income property
 
1,365,150

 
480

 
111

 
—

 
591

 
4,005

 
1,369,746

Owner occupied
 
1,052,078

 
1,652

 
—

 
—

 
1,652

 
6,248

 
1,059,978

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
11,542

 
—

 
—

 
—

 
—

 
14

 
11,556

Residential construction
 
109,080

 
—

 
—

 
—

 
—

 
549

 
109,629

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
103,779

 
—

 
—

 
—

 
—

 
—

 
103,779

Owner occupied
 
103,480

 
—

 
—

 
—

 
—

 
—

 
103,480

Consumer
 
318,369

 
2,035

 
235

 
—

 
2,270

 
3,883

 
324,522

Total
 
$
6,031,078

 
$
7,772

 
$
1,157

 
$
—

 
$
8,929

 
$
27,756

 
$
6,067,763


The following is an analysis of impaired loans as of June 30, 2017 and December 31, 2016:
 
 
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
June 30, 2017
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
2,580,972

 
$
23,392

 
$
10,275

 
$
10,275

 
$
3,425

 
$
13,117

 
$
18,238

Unsecured
 
95,419

 
—

 
—

 
—

 
—

 
—

 
—

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
170,271

 
783

 
320

 
574

 
4

 
463

 
908

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
280,721

 
2,799

 
—

 
—

 
—

 
2,799

 
2,787

Income property
 
1,352,109

 
3,658

 
525

 
530

 
25

 
3,133

 
3,422

Owner occupied
 
1,127,370

 
3,397

 
—

 
—

 
—

 
3,397

 
6,297

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
6,049

 
—

 
—

 
—

 
—

 
—

 
—

Residential construction
 
133,167

 
—

 
—

 
—

 
—

 
—

 
—

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
153,529

 
—

 
—

 
—

 
—

 
—

 
—

Owner occupied
 
39,466

 
—

 
—

 
—

 
—

 
—

 
—

Consumer
 
314,476

 
5,643

 
4,877

 
4,920

 
45

 
766

 
905

Total
 
$
6,253,549

 
$
39,672

 
$
15,997

 
$
16,299

 
$
3,499

 
$
23,675

 
$
32,557

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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, 2016
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
2,442,772

 
$
8,818

 
$
2,414

 
$
2,484

 
$
664

 
$
6,404

 
$
12,831

Unsecured
 
94,737

 
—

 
—

 
—

 
—

 
—

 
—

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
167,403

 
529

 
435

 
693

 
12

 
94

 
291

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
270,106

 
708

 
—

 
—

 
—

 
708

 
687

Income property
 
1,365,321

 
4,425

 
540

 
544

 
27

 
3,885

 
4,148

Owner occupied
 
1,054,564

 
5,414

 
—

 
—

 
—

 
5,414

 
8,102

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
11,542

 
14

 
14

 
102

 
1

 
—

 
—

Residential construction
 
109,293

 
336

 
—

 
—

 
—

 
336

 
336

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
103,779

 
—

 
—

 
—

 
—

 
—

 
—

Owner occupied
 
103,480

 
—

 
—

 
—

 
—

 
—

 
—

Consumer
 
319,307

 
5,215

 
4,464

 
4,558

 
57

 
751

 
833

Total
 
$
6,042,304

 
$
25,459

 
$
7,867

 
$
8,381

 
$
761

 
$
17,592

 
$
27,228

The following table provides additional information on impaired loans for the three and six month periods indicated:
 
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
 
2017
 
2016
 
2017
 
2016
 
 
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
 
$
15,590

 
$
50

 
$
12,859

 
$
20

 
$
13,332

 
$
69

 
$
10,414

 
$
33

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
648

 
21

 
676

 
(3
)
 
608

 
22

 
879

 
3

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
2,549

 
—

 
354

 
—

 
1,936

 
—

 
236

 
—

Income property
 
3,676

 
7

 
1,749

 
10

 
3,925

 
6

 
1,868

 
14

Owner occupied
 
3,453

 
192

 
5,102

 
—

 
4,107

 
192

 
5,420

 
—

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

 
—

 
206

 
1

 
5

 
—

 
293

 
3

Residential construction
 
—

 
—

 
562

 
—

 
112

 
—

 
562

 
—

Consumer
 
5,584

 
31

 
2,332

 
20

 
5,461

 
57

 
1,581

 
21

Total
 
$
31,500

 
$
301

 
$
23,840

 
$
48

 
$
29,486

 
$
346

 
$
21,253

 
$
74


The following is an analysis of loans classified as troubled debt restructurings (“TDR”) during the three and six months ended June 30, 2017 and 2016:
 
 
Three months ended June 30, 2017
 
Three months ended June 30, 2016
 
 
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

 
$
1,422

 
$
1,422

 
2

 
$
293

 
$
293

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
1

 
382

 
382

 
—

 
—

 
—

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Owner occupied
 
—

 
—

 
—

 
1

 
30

 
30

Consumer
 
8

 
815

 
815

 
14

 
2,214

 
2,214

Total
 
11

 
$
2,619

 
$
2,619

 
17

 
$
2,537

 
$
2,537

 
 
Six months ended June 30, 2017
 
Six months ended June 30, 2016
 
 
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
 
5

 
$
1,778

 
$
1,778

 
5

 
$
1,663

 
$
1,663

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
1

 
382

 
382

 
—

 
—

 
—

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Owner occupied
 
—

 
—

 
—

 
2

 
280

 
280

Consumer
 
18

 
2,361

 
2,361

 
18

 
2,711

 
2,711

Total
 
24

 
$
4,521

 
$
4,521

 
25

 
$
4,654

 
$
4,654


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 $371 thousand of additional funds on loans classified as TDR as of June 30, 2017. The Company had $508 thousand of such commitments at December 31, 2016. The Company did not have any loans modified as TDR that defaulted within twelve months of being modified as TDR during the three or six months ended June 30, 2017 and 2016.
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 June 30, 2017 and December 31, 2016:
 
 
June 30, 2017
 
December 31, 2016
 
 
(in thousands)
Commercial business
 
$
16,608

 
$
21,606

Real estate:
 
 
 
 
One-to-four family residential
 
17,242

 
20,643

Commercial and multifamily residential
 
88,398

 
94,795

Total real estate
 
105,640

 
115,438

Real estate construction:
 
 
 
 
One-to-four family residential
 
453

 
832

Commercial and multifamily residential
 
1,074

 
1,726

Total real estate construction
 
1,527

 
2,558

Consumer
 
15,527

 
17,649

Subtotal of PCI loans
 
139,302

 
157,251

Less:
 
 
 
 
Valuation discount resulting from acquisition accounting
 
9,449

 
11,591

Allowance for loan losses
 
8,061

 
10,515

PCI loans, net of allowance for loan losses
 
$
121,792

 
$
135,145


The following table shows the changes in accretable yield for PCI loans for the three and six months ended June 30, 2017 and 2016:
 
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
 
2017
 
2016
 
2017
 
2016
 
 
(in thousands)
Balance at beginning of period
 
$
38,444

 
$
56,607

 
$
45,191

 
$
58,981

Accretion
 
(2,882
)
 
(3,774
)
 
(7,064
)
 
(8,003
)
Disposals
 
—

 
149

 
(158
)
 
1,910

Reclassifications from (to) nonaccretable difference
 
144

 
(73
)
 
(2,263
)
 
21

Balance at end of period
 
$
35,706

 
$
52,909

 
$
35,706

 
$
52,909
v3.7.0.1
Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit
 6 Months Ended
Jun. 30, 2017
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. We have used the same methodology for allowance calculations during the six months ended June 30, 2017 and 2016.
The following tables show a detailed analysis of the allowance for the three and six months ended June 30, 2017 and 2016:
 
 
Beginning
Balance
 
Charge-offs
 
Recoveries
 
Provision (Recovery)
 
Ending
Balance
 
Specific
Reserve
 
General
Allocation
Three months ended June 30, 2017
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
35,672

 
$
(3,600
)
 
$
2,903

 
$
4,564

 
$
39,539

 
$
3,425

 
$
36,114

Unsecured
 
1,188

 
—

 
41

 
(82
)
 
1,147

 
—

 
1,147

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
645

 
(153
)
 
223

 
(87
)
 
628

 
4

 
624

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
2,288

 
—

 
—

 
68

 
2,356

 
—

 
2,356

Income property
 
6,803

 
—

 
60

 
(9
)
 
6,854

 
25

 
6,829

Owner occupied
 
6,534

 
—

 
67

 
(89
)
 
6,512

 
—

 
6,512

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
509

 
—

 
27

 
(175
)
 
361

 
—

 
361

Residential construction
 
1,109

 
—

 
31

 
237

 
1,377

 
—

 
1,377

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
782

 
—

 
—

 
203

 
985

 
—

 
985

Owner occupied
 
1,768

 
—

 
—

 
(386
)
 
1,382

 
—

 
1,382

Consumer
 
3,360

 
(465
)
 
248

 
408

 
3,551

 
45

 
3,506

Purchased credit impaired
 
9,395

 
(1,800
)
 
1,204

 
(738
)
 
8,061

 
—

 
8,061

Unallocated
 
968

 
—

 
—

 
(737
)
 
231

 
—

 
231

Total
 
$
71,021

 
$
(6,018
)
 
$
4,804

 
$
3,177

 
$
72,984

 
$
3,499

 
$
69,485

 
 
Beginning
Balance
 
Charge-offs
 
Recoveries
 
Provision (Recovery)
 
Ending
Balance
 
Specific
Reserve
 
General
Allocation
Six months ended June 30, 2017
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
36,050

 
$
(4,709
)
 
$
3,200

 
$
4,998

 
$
39,539

 
$
3,425

 
$
36,114

Unsecured
 
960

 
(18
)
 
109

 
96

 
1,147

 
—

 
1,147

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
599

 
(460
)
 
340

 
149

 
628

 
4

 
624

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
1,797

 
—

 
—

 
559

 
2,356

 
—

 
2,356

Income property
 
7,342

 
—

 
95

 
(583
)
 
6,854

 
25

 
6,829

Owner occupied
 
6,439

 
—

 
110

 
(37
)
 
6,512

 
—

 
6,512

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
316

 
(14
)
 
47

 
12

 
361

 
—

 
361

Residential construction
 
669

 
—

 
40

 
668

 
1,377

 
—

 
1,377

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
404

 
—

 
—

 
581

 
985

 
—

 
985

Owner occupied
 
1,192

 
—

 
—

 
190

 
1,382

 
—

 
1,382

Consumer
 
3,534

 
(893
)
 
533

 
377

 
3,551

 
45

 
3,506

Purchased credit impaired
 
10,515

 
(3,739
)
 
2,348

 
(1,063
)
 
8,061

 
—

 
8,061

Unallocated
 
226

 
—

 
—

 
5

 
231

 
—

 
231

Total
 
$
70,043

 
$
(9,833
)
 
$
6,822

 
$
5,952

 
$
72,984

 
$
3,499

 
$
69,485


 
 
Beginning
Balance
 
Charge-offs
 
Recoveries
 
Provision (Recovery)
 
Ending
Balance
 
Specific
Reserve
 
General
Allocation
Three months ended June 30, 2016
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
32,114

 
$
(2,900
)
 
$
728

 
$
1,866

 
$
31,808

 
$
2,486

 
$
29,322

Unsecured
 
1,300

 
(41
)
 
25

 
(19
)
 
1,265

 
—

 
1,265

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
654

 
(35
)
 
20

 
35

 
674

 
1

 
673

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
1,262

 
(26
)
 
2

 
184

 
1,422

 
—

 
1,422

Income property
 
7,402

 
—

 
120

 
524

 
8,046

 
100

 
7,946

Owner occupied
 
6,086

 
—

 
8

 
242

 
6,336

 
—

 
6,336

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
640

 
—

 
2

 
(55
)
 
587

 
—

 
587

Residential construction
 
1,449

 
—

 
3

 
(76
)
 
1,376

 
—

 
1,376

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
715

 
—

 
1

 
188

 
904

 
—

 
904

Owner occupied
 
1,210

 
—

 
—

 
174

 
1,384

 
—

 
1,384

Consumer
 
3,368

 
(334
)
 
201

 
325

 
3,560

 
118

 
3,442

Purchased credit impaired
 
13,064

 
(2,898
)
 
1,524

 
91

 
11,781

 
—

 
11,781

Unallocated
 
—

 
—

 
—

 
161

 
161

 
—

 
161

Total
 
$
69,264

 
$
(6,234
)
 
$
2,634

 
$
3,640

 
$
69,304

 
$
2,705

 
$
66,599

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

 
$
(6,670
)
 
$
1,339

 
$
4,818

 
$
31,808

 
$
2,486

 
$
29,322

Unsecured
 
1,299

 
(44
)
 
76

 
(66
)
 
1,265

 
—

 
1,265

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
916

 
(35
)
 
61

 
(268
)
 
674

 
1

 
673

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
1,178

 
(26
)
 
2

 
268

 
1,422

 
—

 
1,422

Income property
 
6,616

 
—

 
181

 
1,249

 
8,046

 
100

 
7,946

Owner occupied
 
5,550

 
—

 
16

 
770

 
6,336

 
—

 
6,336

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

 
—

 
53

 
195

 
587

 
—

 
587

Residential construction
 
733

 
—

 
206

 
437

 
1,376

 
—

 
1,376

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
388

 
—

 
2

 
514

 
904

 
—

 
904

Owner occupied
 
1,006

 
—

 
—

 
378

 
1,384

 
—

 
1,384

Consumer
 
3,531

 
(600
)
 
366

 
263

 
3,560

 
118

 
3,442

Purchased credit impaired
 
13,726

 
(5,764
)
 
3,075

 
744

 
11,781

 
—

 
11,781

Unallocated
 
569

 
—

 
—

 
(408
)
 
161

 
—

 
161

Total
 
$
68,172

 
$
(13,139
)
 
$
5,377

 
$
8,894

 
$
69,304

 
$
2,705

 
$
66,599


Changes in the allowance for unfunded commitments and letters of credit, a component of “Other liabilities” in the Consolidated Balance Sheets, are summarized as follows:
 
 
Three Months Ended
 
Six Months Ended
 
 
June 30,
 
June 30,
 
 
2017
 
2016
 
2017
 
2016
 
 
(in thousands)
Balance at beginning of period
 
$
3,555

 
$
2,930

 
$
2,705

 
$
2,930

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

 
(150
)
 
850

 
(150
)
Balance at end of period
 
$
3,555

 
$
2,780

 
$
3,555

 
$
2,780


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 June 30, 2017 and December 31, 2016:
 
 
Pass
 
Special Mention
 
Substandard
 
Doubtful
 
Loss
 
Total
June 30, 2017
 
(in thousands)
Loans, excluding PCI loans:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
2,423,195

 
$
74,148

 
$
107,021

 
$
—

 
$
—

 
$
2,604,364

Unsecured
 
93,716

 
701

 
1,002

 
—

 
—

 
95,419

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
168,062

 
1,204

 
1,788

 
—

 
—

 
171,054

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
274,000

 
4,761

 
4,759

 
—

 
—

 
283,520

Income property
 
1,328,708

 
8,678

 
18,381

 
—

 
—

 
1,355,767

Owner occupied
 
1,098,775

 
8,269

 
23,723

 
—

 
—

 
1,130,767

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
6,022

 
—

 
27

 
—

 
—

 
6,049

Residential construction
 
132,555

 
399

 
213

 
—

 
—

 
133,167

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
153,529

 
—

 
—

 
—

 
—

 
153,529

Owner occupied
 
35,416

 
—

 
4,050

 
—

 
—

 
39,466

Consumer
 
311,990

 
2

 
8,127

 
—

 
—

 
320,119

Total
 
$
6,025,968

 
$
98,162

 
$
169,091

 
$
—

 
$
—

 
6,293,221

Less:
 
 
 
 
 
 
 
 
 
 
 
 
Allowance for loan and lease losses
 
64,923

Loans, excluding PCI loans, net
 
$
6,228,298

 
 
Pass
 
Special Mention
 
Substandard
 
Doubtful
 
Loss
 
Total
December 31, 2016
 
(in thousands)
Loans, excluding PCI loans:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
2,289,307

 
$
65,846

 
$
96,437

 
$
—

 
$
—

 
$
2,451,590

Unsecured
 
93,721

 
800

 
216

 
—

 
—

 
94,737

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
164,797

 
395

 
2,740

 
—

 
—

 
167,932

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
263,195

 
3,228

 
4,391

 
—

 
—

 
270,814

Income property
 
1,341,978

 
17,902

 
9,866

 
—

 
—

 
1,369,746

Owner occupied
 
1,027,019

 
6,608

 
26,351

 
—

 
—

 
1,059,978

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
11,541

 
—

 
15

 
—

 
—

 
11,556

Residential construction
 
108,941

 
—

 
688

 
—

 
—

 
109,629

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
103,779

 
—

 
—

 
—

 
—

 
103,779

Owner occupied
 
98,948

 
88

 
4,444

 
—

 
—

 
103,480

Consumer
 
317,728

 
—

 
6,794

 
—

 
—

 
324,522

Total
 
$
5,820,954

 
$
94,867

 
$
151,942

 
$
—

 
$
—

 
6,067,763

Less:
 
 
 
 
 
 
 
 
 
 
 
 
Allowance for loan and lease losses
 
59,528

Loans, excluding PCI loans, net
 
$
6,008,235


The following is an analysis of the credit quality of our PCI loan portfolio as of June 30, 2017 and December 31, 2016:
 
 
Pass
 
Special Mention
 
Substandard
 
Doubtful
 
Loss
 
Total
June 30, 2017
 
(in thousands)
PCI loans:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
14,930

 
$
87

 
$
819

 
$
—

 
$
—

 
$
15,836

Unsecured
 
703

 
—

 
69

 
—

 
—

 
772

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
16,379

 
—

 
863

 
—

 
—

 
17,242

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
10,411

 
—

 
—

 
—

 
—

 
10,411

Income property
 
26,047

 
—

 
138

 
—

 
—

 
26,185

Owner occupied
 
50,999

 
—

 
803

 
—

 
—

 
51,802

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
382

 
—

 
71

 
—

 
—

 
453

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
786

 
—

 
—

 
—

 
—

 
786

Owner occupied
 
288

 
—

 
—

 
—

 
—

 
288

Consumer
 
14,998

 
—

 
529

 
—

 
—

 
15,527

Total
 
$
135,923

 
$
87

 
$
3,292

 
$
—

 
$
—

 
139,302

Less:
 
 
 
 
 
 
 
 
 
 
 
 
Valuation discount resulting from acquisition accounting
 
9,449

Allowance for loan losses
 
8,061

PCI loans, net
 
$
121,792

 
 
Pass
 
Special Mention
 
Substandard
 
Doubtful
 
Loss
 
Total
December 31, 2016
 
(in thousands)
PCI loans:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
18,824

 
$
92

 
$
1,954

 
$
—

 
$
—

 
$
20,870

Unsecured
 
736

 
—

 
—

 
—

 
—

 
736

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
19,293

 
—

 
1,350

 
—

 
—

 
20,643

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
7,333

 
—

 
213

 
—

 
—

 
7,546

Income property
 
31,042

 
—

 
1,678

 
—

 
—

 
32,720

Owner occupied
 
53,623

 
—

 
906

 
—

 
—

 
54,529

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
744

 
—

 
88

 
—

 
—

 
832

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
1,217

 
—

 
—

 
—

 
—

 
1,217

Owner occupied
 
509

 
—

 
—

 
—

 
—

 
509

Consumer
 
17,202

 
—

 
447

 
—

 
—

 
17,649

Total
 
$
150,523

 
$
92

 
$
6,636

 
$
—

 
$
—

 
157,251

Less:
 
 
 
 
 
 
 
 
 
 
 
 
Valuation discount resulting from acquisition accounting
 
11,591

Allowance for loan losses
 
10,515

PCI loans, net
 
$
135,145
v3.7.0.1
Other Real Estate Owned
 6 Months Ended
Jun. 30, 2017
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 six months ended June 30, 2017 and 2016:
 
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
 
2017
 
2016
 
2017
 
2016
 
 
(in thousands)
Balance, beginning of period
 
$
4,519

 
$
12,427

 
$
5,998

 
$
13,738

Transfers in
 
—

 
206

 
—

 
311

Valuation adjustments
 
(33
)
 
(139
)
 
(226
)
 
(276
)
Proceeds from sale of OREO property
 
(444
)
 
(1,950
)
 
(1,719
)
 
(3,276
)
Gain on sale of OREO, net
 
16

 
69

 
5

 
116

Balance, end of period
 
$
4,058

 
$
10,613

 
$
4,058

 
$
10,613


At June 30, 2017, there were no foreclosed residential real estate properties held as OREO and the recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process was $537 thousand.
v3.7.0.1
Covered Assets and FDIC Loss-sharing Asset
 6 Months Ended
Jun. 30, 2017
Covered Assets And FDIC Loss Sharing Asset  
Covered Assets and FDIC Loss sharing Asset
FDIC Loss-sharing Asset and Covered Assets
During the current quarter, we entered into an agreement with the FDIC to terminate all loss-sharing agreements ahead of their contractual maturities. These loss-sharing agreements were entered into in 2010 and 2011 in conjunction with our 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 early termination, all rights and obligations of the Company and the FDIC have been resolved and completed. The Company paid the FDIC $4.7 million as consideration for early termination. The early termination was recorded in the Company’s financial statements by removing the remaining FDIC loss-sharing asset of $3.1 million and the remaining FDIC clawback liability of $5.4 million and recording a one-time, pre-tax charge on termination of $2.4 million, recorded to “Other” noninterest expense. Prior to entering into the termination agreement, the Company had $74.0 million of non-single family covered assets and $26.4 million of single family covered assets at March 31, 2017. As a result of the termination agreement, the Company will benefit from all future recoveries, and be responsible for all future losses and expenses related to the assets previously subject to the loss-sharing agreements.
The following table shows a detailed analysis of the FDIC loss-sharing asset for the three and six months ended June 30, 2017 and 2016:
 
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
 
2017
 
2016
 
2017
 
2016
 
 
(in thousands)
Balance at beginning of period
 
$
3,239

 
$
5,954

 
$
3,535

 
$
6,568

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

 
(396
)
 
184

 
(43
)
FDIC reimbursable losses (recoveries), net
 
57

 
(302
)
 
(149
)
 
(166
)
Termination of FDIC loss-sharing agreements
 
(3,123
)
 
—

 
(3,123
)
 
—

Adjustments reflected in noninterest income (1):
 
 
 
 
 
 
 
 
Amortization, net
 
(99
)
 
(883
)
 
(414
)
 
(2,215
)
Loan impairment (recapture)
 
—

 
(20
)
 
40

 
127

Sale of other real estate
 
11

 
(24
)
 
18

 
120

Valuation adjustments of other real estate owned
 
—

 
(40
)
 
—

 
(22
)
Other
 
(85
)
 
(23
)
 
(91
)
 
(103
)
Balance at end of period
 
$
—

 
$
4,266

 
$
—

 
$
4,266


__________
(1) Amounts shown in the table above for adjustments reflected in noninterest income include only those adjustments recorded to the noninterest income line item “Change in FDIC loss-sharing asset” in the Consolidated Statements of Income and do not include the charge related to the termination of the FDIC loss-sharing agreements.
v3.7.0.1
Goodwill and Intangible Assets
 6 Months Ended
Jun. 30, 2017
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 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 June 30,
 
Six Months Ended June 30,
 
 
2017
 
2016
 
2017
 
2016
 
 
(in thousands)
Goodwill
 
 
 
 
 
 
 
 
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
 
(43,235
)
 
(37,523
)
 
(41,886
)
 
(35,940
)
Core deposit intangible, net at beginning of period
 
15,363

 
21,075

 
16,712

 
22,658

CDI current period amortization
 
(1,249
)
 
(1,483
)
 
(2,598
)
 
(3,066
)
Total core deposit intangible, net at end of period
 
14,114

 
19,592

 
14,114

 
19,592

Intangible assets not subject to amortization
 
919

 
919

 
919

 
919

Other intangible assets, net at end of period
 
15,033

 
20,511

 
15,033

 
20,511

Total goodwill and other intangible assets at end of period
 
$
397,795

 
$
403,273

 
$
397,795

 
$
403,273


The following table provides the estimated future amortization expense of core deposit intangibles for the remaining six months ending December 31, 2017 and the succeeding four years:
 
 
Amount
 
 
(in thousands)
Year ending December 31,
 
 
2017
 
$
2,315

2018
 
3,855

2019
 
2,951

2020
 
2,048

2021
 
1,440
v3.7.0.1
Derivatives and Balance Sheet Offsetting
 6 Months Ended
Jun. 30, 2017
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 June 30, 2017 and December 31, 2016 was $346.7 million and $309.3 million, respectively. During the three and six months ended June 30, 2017, mark-to-market gains of $2 thousand and $6 thousand were recorded to “Other” noninterest expense. During the three and six months ended June 30, 2016, a mark-to-market gain of $1 thousand and a loss of $7 thousand were recorded to “Other” noninterest expense.
The following table presents the fair value of derivatives not designated as hedging instruments at June 30, 2017 and December 31, 2016:
 
Asset Derivatives
 
Liability Derivatives
 
June 30, 2017
 
December 31, 2016
 
June 30, 2017
 
December 31, 2016
 
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
 
$
9,077

 
Other assets
 
$
9,012

 
Other liabilities
 
$
9,096

 
Other liabilities
 
$
9,036



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
June 30, 2017
(in thousands)
Assets
 
 
 
 
 
 
 
 
 
Interest rate contracts
$
9,077

 
$
—

 
$
9,077

 
$
—

 
$
9,077

Liabilities
 
 
 
 
 
 
 
 
 
Interest rate contracts
$
9,096

 
$
—

 
$
9,096

 
$
(9,096
)
 
$
—

Repurchase agreements
$
65,895

 
$
—

 
$
65,895

 
$
(65,895
)
 
$
—

 
 
 
 
 
 
 
 
 
 
December 31, 2016
 
 
 
 
 
 
 
 
 
Assets
 
 
 
 
 
 
 
 
 
Interest rate contracts
$
9,012

 
$
—

 
$
9,012

 
$
—

 
$
9,012

Liabilities
 
 
 
 
 
 
 
 
 
Interest rate contracts
$
9,036

 
$
—

 
$
9,036

 
$
(9,036
)
 
$
—

Repurchase agreements
$
80,822

 
$
—

 
$
80,822

 
$
(80,822
)
 
$
—


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
June 30, 2017
 
(in thousands)
Class of collateral pledged for repurchase agreements
 
 
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations
 
$
40,895

 
$
—

 
$
—

 
$
25,000

 
$
65,895

Gross amount of recognized liabilities for repurchase agreements
 
 
 
 
 
 
 
 
 
65,895

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.
v3.7.0.1
Commitments and Contingent Liabilities
 6 Months Ended
Jun. 30, 2017
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 2017 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 lease term is through July 2026, with monthly payments of approximately $12 thousand. 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 June 30, 2017, the deferred gain was $679 thousand and is a component of "Other liabilities" in the Consolidated Balance Sheets.
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 June 30, 2017 and December 31, 2016, the Company’s loan commitments amounted to $2.18 billion and $2.17 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 $49.6 million and $49.7 million at June 30, 2017 and December 31, 2016, respectively. In addition, commitments under commercial letters of credit used to facilitate customers’ trade transactions and other off-balance sheet liabilities amounted to $3.0 million and $3.4 million at June 30, 2017 and December 31, 2016, 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.
v3.7.0.1
Shareholders' Equity
 6 Months Ended
Jun. 30, 2017
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”). On January 12, 2017, all outstanding shares of Series B Preferred Stock were converted to Company common stock.
Dividends: On January 26, 2017, the Company declared a quarterly cash dividend of $0.22 per common share payable on February 22, 2017 to shareholders of record at the close of business on February 8, 2017.
On April 27, 2017, the Company declared a regular quarterly cash dividend of $0.22 per common share payable on May 24, 2017 to shareholders of record at the close of business on May 10, 2017.
Subsequent to quarter end, on July 27, 2017, the Company declared a regular quarterly cash dividend of $0.22 per common share payable on August 23, 2017 to shareholders of record at the close of business on August 9, 2017.
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.
v3.7.0.1
Accumulated Other Comprehensive Income
 6 Months Ended
Jun. 30, 2017
Accumulated Other Comprehensive Income (Loss) [Abstract]  
Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Loss
The following table shows changes in accumulated other comprehensive income (loss) by component for the three and six month periods ended June 30, 2017 and 2016:
 
 
Unrealized Gains and Losses on Available-for-Sale Securities (1)
 
Unrealized Gains and Losses on Pension Plan Liability (1)
 
Total (1)
Three months ended June 30, 2017
 
(in thousands)
Beginning balance
 
$
(11,002
)
 
$
(1,604
)
 
$
(12,606
)
Other comprehensive income before reclassifications
 
6,033

 
—

 
6,033

Amounts reclassified from accumulated other comprehensive income
 
—

 
45

 
45

Net current-period other comprehensive income
 
6,033

 
45

 
6,078

Ending balance
 
$
(4,969
)
 
$
(1,559
)
 
$
(6,528
)
Three months ended June 30, 2016
 
 
 
 
 
 
Beginning balance
 
$
18,918

 
$
(6,575
)
 
$
12,343

Other comprehensive income before reclassifications
 
8,508

 
—

 
8,508

Amounts reclassified from accumulated other comprehensive income (loss)
 
(146
)
 
106

 
(40
)
Net current-period other comprehensive income
 
8,362

 
106

 
8,468

Ending balance
 
$
27,280

 
$
(6,469
)
 
$
20,811

Six months ended June 30, 2017
 
 
 
 
 
 
Beginning balance
 
$
(12,704
)
 
$
(6,295
)
 
$
(18,999
)
Other comprehensive income before reclassifications
 
7,735

 
4,604

 
12,339

Amounts reclassified from accumulated other comprehensive income
 
—

 
132

 
132

Net current-period other comprehensive income
 
7,735

 
4,736

 
12,471

Ending balance
 
$
(4,969
)
 
$
(1,559
)
 
$
(6,528
)
Six months ended June 30, 2016
 
 
 
 
 
 
Beginning balance
 
$
386

 
$
(6,681
)
 
$
(6,295
)
Other comprehensive income before reclassifications
 
27,278

 
—

 
27,278

Amounts reclassified from accumulated other comprehensive income (loss)
 
(384
)
 
212

 
(172
)
Net current-period other comprehensive income
 
26,894

 
212

 
27,106

Ending balance
 
$
27,280

 
$
(6,469
)
 
$
20,811

__________
(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 six month periods ended June 30, 2017 and 2016:
 
 
Amount Reclassified from Accumulated Other Comprehensive Income (Loss)
 
 
 
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
Affected line Item in the Consolidated
 
 
2017
 
2016
 
2017
 
2016
 
Statement of Income
 
 
(in thousands)
 
 
Unrealized gains and losses on available-for-sale securities
 
 
 
 
 
 
 
 
 
 
Investment securities gains
 
$
—

 
$
229

 
$
—

 
$
602

 
Investment securities gains, net
 
 
—

 
229

 
—

 
602

 
Total before tax
 
 
—

 
(83
)
 
—

 
(218
)
 
Income tax provision
 
 
$
—

 
$
146

 
$
—

 
$
384

 
Net of tax
 
 
 
 
 
 
 
 
 
 
 
Amortization of pension plan liability
 
 
 
 
 
 
 
 
 
 
Actuarial losses
 
$
(71
)
 
$
(167
)
 
$
(207
)
 
$
(334
)
 
Compensation and employee benefits
 
 
(71
)
 
(167
)
 
(207
)
 
(334
)
 
Total before tax
 
 
26

 
61

 
75

 
122

 
Income tax benefit
 
 
$
(45
)
 
$
(106
)
 
$
(132
)
 
$
(212
)
 
Net of tax
v3.7.0.1
Fair Value Accounting and Measurement
 6 Months Ended
Jun. 30, 2017
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 June 30, 2017 and December 31, 2016 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
June 30, 2017
 
(in thousands)
Assets
 
 
 
 
 
 
 
 
Securities available for sale:
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations
 
$
1,423,958

 
$
—

 
$
1,423,958

 
$
—

State and municipal debt securities
 
483,093

 
—

 
483,093

 
—

U.S. government agency and government-sponsored enterprise securities
 
352,238

 
—

 
352,238

 
—

U.S. government securities
 
250

 
250

 
—

 
—

Other securities
 
5,097

 
—

 
5,097

 
—

Total securities available for sale
 
$
2,264,636

 
$
250

 
$
2,264,386

 
$
—

Other assets (Interest rate contracts)
 
$
9,077

 
$
—

 
$
9,077

 
$
—

Liabilities
 
 
 
 
 
 
 
 
Other liabilities (Interest rate contracts)
 
$
9,096

 
$
—

 
$
9,096

 
$
—

 
 
Fair value
 
Fair Value Measurements at Reporting Date Using
 
 
Level 1
 
Level 2
 
Level 3
December 31, 2016
 
(in thousands)
Assets
 
 
 
 
 
 
 
 
Securities available for sale:
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations
 
$
1,465,732

 
$
—

 
$
1,465,732

 
$
—

State and municipal debt securities
 
475,060

 
—

 
475,060

 
—

U.S. government agency and government-sponsored enterprise securities
 
331,902

 
—

 
331,902

 
—

U.S. government securities
 
800

 
800

 
—

 
—

Other securities
 
5,083

 
—

 
5,083

 
—

Total securities available for sale
 
$
2,278,577

 
$
800

 
$
2,277,777

 
$
—

Other assets (Interest rate contracts)
 
$
9,012

 
$
—

 
$
9,012

 
$
—

Liabilities
 
 
 
 
 
 
 
 
Other liabilities (Interest rate contracts)
 
$
9,036

 
$
—

 
$
9,036

 
$
—


There were no transfers between Level 1 and Level 2 of the valuation hierarchy during the six month periods ended June 30, 2017 and 2016. 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
June 30, 2017
 
Fair Value Measurements at Reporting Date Using
 
Losses During the Three Months Ended
June 30, 2017
 
Losses During the Six Months Ended
June 30, 2017
 
 
Level 1
 
Level 2
 
Level 3
 
 
 
(in thousands)
Impaired loans
 
$
7,019

 
$
—

 
$
—

 
$
7,019

 
$
3,669

 
$
3,669

OREO
 
105

 
—

 
—

 
105

 
33

 
33

 
 
$
7,124

 
$
—

 
$
—

 
$
7,124

 
$
3,702

 
$
3,702

 
 
Fair value at
June 30, 2016
 
Fair Value Measurements at Reporting Date Using
 
Losses During the Three Months Ended
June 30, 2016
 
Losses During the Six Months Ended June, 2016
 
 
Level 1
 
Level 2
 
Level 3
 
 
 
(in thousands)
Impaired loans
 
$
3,218

 
$
—

 
$
—

 
$
3,218

 
$
2,691

 
$
2,691

OREO
 
6,338

 
—

 
—

 
6,338

 
138

 
233

 
 
$
9,556

 
$
—

 
$
—

 
$
9,556

 
$
2,829

 
$
2,924


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
June 30, 2017
 
Valuation Technique
 
Unobservable Input
 
Range (Weighted Average) (1)
 
 
(dollars in thousands)
Impaired loans - collateral-dependent (3)
 
$
7,019

 
Fair Market Value of Collateral
 
Adjustment to Stated Value
 
0.00% - 75.00% (60.59%)
OREO
 
$
105

 
Fair Market Value of Collateral
 
Adjustment to Appraisal Value
 
N/A (2)
(1) Discount applied to appraisal value or stated value (in the case of accounts receivable, fixed assets, and inventory).
(2) Quantitative disclosures are not provided for OREO because there were no adjustments made to the appraisal values.
(3) Collateral consists of accounts receivable, fixed assets, inventory, and real estate.

 
 
Fair value at
June 30, 2016
 
Valuation Technique
 
Unobservable Input
 
Range (Weighted Average) (1)
 
 
(dollars in thousands)
Impaired loans - collateral-dependent (3)
 
$
303

 
Fair Market Value of Collateral
 
Adjustment to Stated Value
 
N/A (2)
Impaired loans - other
 
$
2,915

 
Discounted Cash Flow
 
Discount Rate
 
2.99% - 10.25% (6.03%)
OREO
 
$
6,338

 
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 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 June 30, 2017 or December 31, 2016, 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 June 30, 2017 (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 June 30, 2017 and December 31, 2016:
 
 
June 30, 2017
 
 
Carrying
Amount
 
Fair
Value
 
Level 1
 
Level 2
 
Level 3
 
 
(in thousands)
Assets
 
 
 
 
 
 
 
 
 
 
Cash and due from banks
 
$
197,623

 
$
197,623

 
$
197,623

 
$
—

 
$
—

Interest-earning deposits with banks
 
14,425

 
14,425

 
14,425

 
—

 
—

Securities available for sale
 
2,264,636

 
2,264,636

 
250

 
2,264,386

 
—

FHLB stock
 
16,360

 
16,360

 
—

 
16,360

 
—

Loans held for sale
 
6,918

 
6,918

 
—

 
6,918

 
—

Loans
 
6,350,090

 
6,233,490

 
—

 
—

 
6,233,490

Interest rate contracts
 
9,077

 
9,077

 
—

 
9,077

 
—

Liabilities
 
 
 
 
 
 
 
 
 
 
Deposits
 
$
8,072,464

 
$
8,067,980

 
$
7,687,671

 
$
380,309

 
$
—

FHLB advances
 
159,474

 
160,397

 
—

 
160,397

 
—

Repurchase agreements
 
65,895

 
66,102

 
—

 
66,102

 
—

Interest rate contracts
 
9,096

 
9,096

 
—

 
9,096

 
—


 
 
December 31, 2016
 
 
Carrying
Amount
 
Fair
Value
 
Level 1
 
Level 2
 
Level 3
 
 
(in thousands)
Assets
 
 
 
 
 
 
 
 
 
 
Cash and due from banks
 
$
193,038

 
$
193,038

 
$
193,038

 
$
—

 
$
—

Interest-earning deposits with banks
 
31,200

 
31,200

 
31,200

 
—

 
—

Securities available for sale
 
2,278,577

 
2,278,577

 
800

 
2,277,777

 
—

FHLB stock
 
10,240

 
10,240

 
—

 
10,240

 
—

Loans held for sale
 
5,846

 
5,846

 
—

 
5,846

 
—

Loans
 
6,143,380

 
6,040,439

 
—

 
—

 
6,040,439

FDIC loss-sharing asset
 
3,535

 
867

 
—

 
—

 
867

Interest rate contracts
 
9,012

 
9,012

 
—

 
9,012

 
—

Liabilities
 
 
 
 
 
 
 
 
 
 
Deposits
 
$
8,059,415

 
$
8,055,168

 
$
7,653,122

 
$
402,046

 
$
—

FHLB advances
 
6,493

 
7,070

 
—

 
7,070

 
—

Repurchase agreements
 
80,822

 
81,131

 
—

 
81,131

 
—

Interest rate contracts
 
9,036

 
9,036

 
—

 
9,036

 
—
v3.7.0.1
Earnings per Common Share
 6 Months Ended
Jun. 30, 2017
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 six months ended June 30, 2017 and 2016:
 
 
Three Months Ended
 
Six Months Ended
 
 
June 30,
 
June 30,
 
 
2017
 
2016
 
2017
 
2016
 
 
(in thousands except per share)
Basic EPS:
 
 
 
 
 
 
 
 
Net income
 
$
27,132

 
$
25,405

 
$
56,331

 
$
46,664

Less: Earnings allocated to participating securities:
 
 
 
 
 
 
 
 
Preferred shares
 
—

 
45

 
3

 
82

Nonvested restricted shares
 
362

 
343

 
759

 
578

Earnings allocated to common shareholders
 
$
26,770

 
$
25,017

 
$
55,569

 
$
46,004

Weighted average common shares outstanding
 
57,520

 
57,185

 
57,437

 
57,149

Basic earnings per common share
 
$
0.47

 
$
0.44

 
$
0.97

 
$
0.80

Diluted EPS:
 
 
 
 
 
 
 
 
Earnings allocated to common shareholders
 
$
26,770

 
$
25,017

 
$
55,569

 
$
46,004

Weighted average common shares outstanding
 
57,520

 
57,185

 
57,437

 
57,149

Dilutive effect of equity awards
 
5

 
10

 
5

 
11

Weighted average diluted common shares outstanding
 
57,525

 
57,195

 
57,442

 
57,160

Diluted earnings per common share
 
$
0.47

 
$
0.44

 
$
0.97

 
$
0.80

Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive
 
12

 
19

 
13

 
23
v3.7.0.1
Subsequent event
 6 Months Ended
Jun. 30, 2017
Subsequent Event [Line Items]  
Subsequent Events [Text Block]
Subsequent Event
In July 2017, we entered into an asset purchase agreement (the “Agreement”) with a third-party by which we transitioned our merchant services delivery from in-house to an outsourced model. The carrying amount of both assets and liabilities subject to this Agreement was zero. The sale transaction resulted in a one-time $14.0 million gain to be recognized in the third quarter of 2017. In addition to the one-time gain, prospectively Columbia will receive net monthly revenue from merchant services. If the Agreement is terminated by Columbia or the third-party during its initial ten-year term, we must pay the third-party a termination fee
v3.7.0.1
Securities (Tables)
 6 Months Ended
Jun. 30, 2017
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)
June 30, 2017
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations
 
$
1,438,875

 
$
3,478

 
$
(18,395
)
 
$
1,423,958

State and municipal securities
 
476,510

 
9,279

 
(2,696
)
 
483,093

U.S. government agency and government-sponsored enterprise securities
 
352,039

 
1,486

 
(1,287
)
 
352,238

U.S. government securities
 
251

 
—

 
(1
)
 
250

Other securities
 
5,284

 
70

 
(257
)
 
5,097

Total
 
$
2,272,959

 
$
14,313

 
$
(22,636
)
 
$
2,264,636

December 31, 2016
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations
 
$
1,486,690

 
$
2,760

 
$
(23,718
)
 
$
1,465,732

State and municipal securities
 
473,914

 
6,343

 
(5,197
)
 
475,060

U.S. government agency and government-sponsored enterprise securities
 
332,348

 
1,065

 
(1,511
)
 
331,902

U.S. government securities
 
801

 
—

 
(1
)
 
800

Other securities
 
5,284

 
63

 
(264
)
 
5,083

Total
 
$
2,299,037

 
$
10,231

 
$
(30,691
)
 
$
2,278,577
Schedule of gross realized gains and losses on sales and calls of securities available for sale
The following table provides the proceeds and gross realized gains and losses on the sales of securities for the periods indicated:
 
 
Three Months Ended
 
Six Months Ended
 
 
June 30,
 
June 30,
 
 
2017
 
2016
 
2017
 
2016
 
 
(in thousands)
Proceeds from sales of available for sale securities
 
$
—

 
$
44,534

 
$
—

 
$
83,410

 
 
 
 
 
 
 
 
 
Gross realized gains
 
$
—

 
$
229

 
$
—

 
$
602

Gross realized losses
 
—

 
—

 
—

 
—

Net realized gains
 
$
—

 
$
229

 
$
—

 
$
602
Schedule of Contractual Maturities of Investment Securities Available for Sale
The scheduled contractual maturities of investment securities available for sale at June 30, 2017 are presented as follows:
 
 
June 30, 2017
 
 
Amortized Cost
 
Fair Value
 
 
(in thousands)
Due within one year
 
$
99,775

 
$
99,740

Due after one year through five years
 
461,043

 
464,716

Due after five years through ten years
 
726,133

 
724,520

Due after ten years
 
980,724

 
970,563

Other securities with no stated maturity
 
5,284

 
5,097

Total investment securities available-for-sale
 
$
2,272,959

 
$
2,264,636
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:
 
 
June 30, 2017
 
 
(in thousands)
Washington and Oregon State to secure public deposits
 
$
244,580

Federal Reserve Bank to secure borrowings
 
54,877

Other securities pledged
 
122,932

Total securities pledged as collateral
 
$
422,389
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 June 30, 2017 and December 31, 2016:
 
 
Less than 12 Months
 
12 Months or More
 
Total
 
 
Fair
Value
 
Unrealized
Losses
 
Fair
Value
 
Unrealized
Losses
 
Fair
Value
 
Unrealized
Losses
 
 
(in thousands)
June 30, 2017
 
 
 
 
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations
 
$
858,558

 
$
(12,683
)
 
$
180,212

 
$
(5,712
)
 
$
1,038,770

 
$
(18,395
)
State and municipal securities
 
108,038

 
(2,189
)
 
13,246

 
(507
)
 
121,284

 
(2,696
)
U.S. government agency and government-sponsored enterprise securities
 
194,738

 
(1,287
)
 
—

 
—

 
194,738

 
(1,287
)
U.S. government securities
 
251

 
(1
)
 
—

 
—

 
251

 
(1
)
Other securities
 
2,276

 
(39
)
 
2,737

 
(218
)
 
5,013

 
(257
)
Total
 
$
1,163,861

 
$
(16,199
)
 
$
196,195

 
$
(6,437
)
 
$
1,360,056

 
$
(22,636
)
 
 
 
 
 
 
 
 
 
 
 
 
 
December 31, 2016
 
 
 
 
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations
 
$
1,029,116

 
$
(18,788
)
 
$
159,046

 
$
(4,930
)
 
$
1,188,162

 
$
(23,718
)
State and municipal securities
 
211,342

 
(5,064
)
 
3,384

 
(133
)
 
214,726

 
(5,197
)
U.S. government agency and government-sponsored enterprise securities
 
218,811

 
(1,511
)
 
—

 
—

 
218,811

 
(1,511
)
U.S. government securities
 
251

 
(1
)
 
—

 
—

 
251

 
(1
)
Other securities
 
2,263

 
(51
)
 
2,743

 
(213
)
 
5,006

 
(264
)
Total
 
$
1,461,783

 
$
(25,415
)
 
$
165,173

 
$
(5,276
)
 
$
1,626,956

 
$
(30,691
)
v3.7.0.1
Loans (Tables)
 6 Months Ended
Jun. 30, 2017
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):
 
 
June 30, 2017
 
December 31, 2016
 
 
Loans, excluding PCI loans
 
PCI Loans
 
Total
 
Loans, excluding PCI loans
 
PCI Loans
 
Total
 
 
(in thousands)
Commercial business
 
$
2,704,468

 
$
15,299

 
$
2,719,767

 
$
2,551,054

 
$
20,185

 
$
2,571,239

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
173,150

 
14,735

 
187,885

 
170,331

 
17,862

 
188,193

Commercial and multifamily residential
 
2,787,560

 
84,385

 
2,871,945

 
2,719,830

 
89,231

 
2,809,061

Total real estate
 
2,960,710

 
99,120

 
3,059,830

 
2,890,161

 
107,093

 
2,997,254

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
139,956

 
453

 
140,409

 
121,887

 
832

 
122,719

Commercial and multifamily residential
 
195,565

 
961

 
196,526

 
209,118

 
1,565

 
210,683

Total real estate construction
 
335,521

 
1,414

 
336,935

 
331,005

 
2,397

 
333,402

Consumer
 
323,187

 
14,020

 
337,207

 
329,261

 
15,985

 
345,246

Less: Net unearned income
 
(30,665
)
 
—

 
(30,665
)
 
(33,718
)
 
—

 
(33,718
)
Total loans, net of unearned income
 
6,293,221

 
129,853

 
6,423,074

 
6,067,763

 
145,660

 
6,213,423

Less: Allowance for loan and lease losses
 
(64,923
)
 
(8,061
)
 
(72,984
)
 
(59,528
)
 
(10,515
)
 
(70,043
)
Total loans, net
 
$
6,228,298

 
$
121,792

 
$
6,350,090

 
$
6,008,235

 
$
135,145

 
$
6,143,380

Loans held for sale
 
$
6,918

 
$
—

 
$
6,918

 
$
5,846

 
$
—

 
$
5,846
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 June 30, 2017 and December 31, 2016:
 
 
June 30, 2017
 
December 31, 2016
 
 
Recorded
Investment
Nonaccrual
Loans
 
Unpaid Principal
Balance
Nonaccrual
Loans
 
Recorded
Investment
Nonaccrual
Loans
 
Unpaid Principal
Balance
Nonaccrual
Loans
 
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
Secured
 
$
24,663

 
$
38,586

 
$
11,524

 
$
21,503

Unsecured
 
84

 
237

 
31

 
303

Real estate:
 
 
 
 
 
 
 
 
One-to-four family residential
 
697

 
1,248

 
568

 
1,302

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
Commercial land
 
3,198

 
3,503

 
934

 
922

Income property
 
3,411

 
3,741

 
4,005

 
4,247

Owner occupied
 
658

 
2,137

 
6,248

 
9,030

Real estate construction:
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
Land and acquisition
 
27

 
27

 
14

 
102

Residential construction
 
214

 
214

 
549

 
549

Consumer
 
3,872

 
4,543

 
3,883

 
4,331

Total
 
$
36,824

 
$
54,236

 
$
27,756

 
$
42,289
Analysis of the Aged Loan Portfolio
The following is an aging of the recorded investment of the loan portfolio as of June 30, 2017 and December 31, 2016:
 
 
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
June 30, 2017
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
2,572,664

 
$
5,227

 
$
1,810

 
$
—

 
$
7,037

 
$
24,663

 
$
2,604,364

Unsecured
 
95,132

 
180

 
23

 
—

 
203

 
84

 
95,419

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
169,244

 
965

 
148

 
—

 
1,113

 
697

 
171,054

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
280,322

 
—

 
—

 
—

 
—

 
3,198

 
283,520

Income property
 
1,351,539

 
561

 
256

 
—

 
817

 
3,411

 
1,355,767

Owner occupied
 
1,126,857

 
2,309

 
943

 
—

 
3,252

 
658

 
1,130,767

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
6,022

 
—

 
—

 
—

 
—

 
27

 
6,049

Residential construction
 
132,953

 
—

 
—

 
—

 
—

 
214

 
133,167

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
153,529

 
—

 
—

 
—

 
—

 
—

 
153,529

Owner occupied
 
35,416

 
4,050

 
—

 
—

 
4,050

 
—

 
39,466

Consumer
 
314,196

 
1,748

 
303

 
—

 
2,051

 
3,872

 
320,119

Total
 
$
6,237,874

 
$
15,040

 
$
3,483

 
$
—

 
$
18,523

 
$
36,824

 
$
6,293,221

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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, 2016
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
2,439,250

 
$
806

 
$
10

 
$
—

 
$
816

 
$
11,524

 
$
2,451,590

Unsecured
 
94,118

 
287

 
301

 
—

 
588

 
31

 
94,737

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
164,416

 
2,448

 
500

 
—

 
2,948

 
568

 
167,932

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
269,816

 
64

 
—

 
—

 
64

 
934

 
270,814

Income property
 
1,365,150

 
480

 
111

 
—

 
591

 
4,005

 
1,369,746

Owner occupied
 
1,052,078

 
1,652

 
—

 
—

 
1,652

 
6,248

 
1,059,978

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
11,542

 
—

 
—

 
—

 
—

 
14

 
11,556

Residential construction
 
109,080

 
—

 
—

 
—

 
—

 
549

 
109,629

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
103,779

 
—

 
—

 
—

 
—

 
—

 
103,779

Owner occupied
 
103,480

 
—

 
—

 
—

 
—

 
—

 
103,480

Consumer
 
318,369

 
2,035

 
235

 
—

 
2,270

 
3,883

 
324,522

Total
 
$
6,031,078

 
$
7,772

 
$
1,157

 
$
—

 
$
8,929

 
$
27,756

 
$
6,067,763
Impaired Financing Receivables
The following is an analysis of impaired loans as of June 30, 2017 and December 31, 2016:
 
 
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
June 30, 2017
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
2,580,972

 
$
23,392

 
$
10,275

 
$
10,275

 
$
3,425

 
$
13,117

 
$
18,238

Unsecured
 
95,419

 
—

 
—

 
—

 
—

 
—

 
—

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
170,271

 
783

 
320

 
574

 
4

 
463

 
908

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
280,721

 
2,799

 
—

 
—

 
—

 
2,799

 
2,787

Income property
 
1,352,109

 
3,658

 
525

 
530

 
25

 
3,133

 
3,422

Owner occupied
 
1,127,370

 
3,397

 
—

 
—

 
—

 
3,397

 
6,297

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
6,049

 
—

 
—

 
—

 
—

 
—

 
—

Residential construction
 
133,167

 
—

 
—

 
—

 
—

 
—

 
—

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
153,529

 
—

 
—

 
—

 
—

 
—

 
—

Owner occupied
 
39,466

 
—

 
—

 
—

 
—

 
—

 
—

Consumer
 
314,476

 
5,643

 
4,877

 
4,920

 
45

 
766

 
905

Total
 
$
6,253,549

 
$
39,672

 
$
15,997

 
$
16,299

 
$
3,499

 
$
23,675

 
$
32,557

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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, 2016
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
2,442,772

 
$
8,818

 
$
2,414

 
$
2,484

 
$
664

 
$
6,404

 
$
12,831

Unsecured
 
94,737

 
—

 
—

 
—

 
—

 
—

 
—

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
167,403

 
529

 
435

 
693

 
12

 
94

 
291

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
270,106

 
708

 
—

 
—

 
—

 
708

 
687

Income property
 
1,365,321

 
4,425

 
540

 
544

 
27

 
3,885

 
4,148

Owner occupied
 
1,054,564

 
5,414

 
—

 
—

 
—

 
5,414

 
8,102

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
11,542

 
14

 
14

 
102

 
1

 
—

 
—

Residential construction
 
109,293

 
336

 
—

 
—

 
—

 
336

 
336

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
103,779

 
—

 
—

 
—

 
—

 
—

 
—

Owner occupied
 
103,480

 
—

 
—

 
—

 
—

 
—

 
—

Consumer
 
319,307

 
5,215

 
4,464

 
4,558

 
57

 
751

 
833

Total
 
$
6,042,304

 
$
25,459

 
$
7,867

 
$
8,381

 
$
761

 
$
17,592

 
$
27,228

The following table provides additional information on impaired loans for the three and six month periods indicated:
 
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
 
2017
 
2016
 
2017
 
2016
 
 
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
 
$
15,590

 
$
50

 
$
12,859

 
$
20

 
$
13,332

 
$
69

 
$
10,414

 
$
33

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
648

 
21

 
676

 
(3
)
 
608

 
22

 
879

 
3

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
2,549

 
—

 
354

 
—

 
1,936

 
—

 
236

 
—

Income property
 
3,676

 
7

 
1,749

 
10

 
3,925

 
6

 
1,868

 
14

Owner occupied
 
3,453

 
192

 
5,102

 
—

 
4,107

 
192

 
5,420

 
—

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

 
—

 
206

 
1

 
5

 
—

 
293

 
3

Residential construction
 
—

 
—

 
562

 
—

 
112

 
—

 
562

 
—

Consumer
 
5,584

 
31

 
2,332

 
20

 
5,461

 
57

 
1,581

 
21

Total
 
$
31,500

 
$
301

 
$
23,840

 
$
48

 
$
29,486

 
$
346

 
$
21,253

 
$
74
Analysis of loans classified as Troubled Debt Restructurings (“TDR”)

The following is an analysis of loans classified as troubled debt restructurings (“TDR”) during the three and six months ended June 30, 2017 and 2016:
 
 
Three months ended June 30, 2017
 
Three months ended June 30, 2016
 
 
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

 
$
1,422

 
$
1,422

 
2

 
$
293

 
$
293

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
1

 
382

 
382

 
—

 
—

 
—

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Owner occupied
 
—

 
—

 
—

 
1

 
30

 
30

Consumer
 
8

 
815

 
815

 
14

 
2,214

 
2,214

Total
 
11

 
$
2,619

 
$
2,619

 
17

 
$
2,537

 
$
2,537

 
 
Six months ended June 30, 2017
 
Six months ended June 30, 2016
 
 
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
 
5

 
$
1,778

 
$
1,778

 
5

 
$
1,663

 
$
1,663

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
1

 
382

 
382

 
—

 
—

 
—

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Owner occupied
 
—

 
—

 
—

 
2

 
280

 
280

Consumer
 
18

 
2,361

 
2,361

 
18

 
2,711

 
2,711

Total
 
24

 
$
4,521

 
$
4,521

 
25

 
$
4,654

 
$
4,654
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 June 30, 2017 and December 31, 2016:
 
 
June 30, 2017
 
December 31, 2016
 
 
(in thousands)
Commercial business
 
$
16,608

 
$
21,606

Real estate:
 
 
 
 
One-to-four family residential
 
17,242

 
20,643

Commercial and multifamily residential
 
88,398

 
94,795

Total real estate
 
105,640

 
115,438

Real estate construction:
 
 
 
 
One-to-four family residential
 
453

 
832

Commercial and multifamily residential
 
1,074

 
1,726

Total real estate construction
 
1,527

 
2,558

Consumer
 
15,527

 
17,649

Subtotal of PCI loans
 
139,302

 
157,251

Less:
 
 
 
 
Valuation discount resulting from acquisition accounting
 
9,449

 
11,591

Allowance for loan losses
 
8,061

 
10,515

PCI loans, net of allowance for loan losses
 
$
121,792

 
$
135,145
Changes in Accretable Yield for Acquired Loans
The following table shows the changes in accretable yield for PCI loans for the three and six months ended June 30, 2017 and 2016:
 
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
 
2017
 
2016
 
2017
 
2016
 
 
(in thousands)
Balance at beginning of period
 
$
38,444

 
$
56,607

 
$
45,191

 
$
58,981

Accretion
 
(2,882
)
 
(3,774
)
 
(7,064
)
 
(8,003
)
Disposals
 
—

 
149

 
(158
)
 
1,910

Reclassifications from (to) nonaccretable difference
 
144

 
(73
)
 
(2,263
)
 
21

Balance at end of period
 
$
35,706

 
$
52,909

 
$
35,706

 
$
52,909
v3.7.0.1
Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Tables)
 6 Months Ended
Jun. 30, 2017
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 six months ended June 30, 2017 and 2016:
 
 
Beginning
Balance
 
Charge-offs
 
Recoveries
 
Provision (Recovery)
 
Ending
Balance
 
Specific
Reserve
 
General
Allocation
Three months ended June 30, 2017
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
35,672

 
$
(3,600
)
 
$
2,903

 
$
4,564

 
$
39,539

 
$
3,425

 
$
36,114

Unsecured
 
1,188

 
—

 
41

 
(82
)
 
1,147

 
—

 
1,147

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
645

 
(153
)
 
223

 
(87
)
 
628

 
4

 
624

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
2,288

 
—

 
—

 
68

 
2,356

 
—

 
2,356

Income property
 
6,803

 
—

 
60

 
(9
)
 
6,854

 
25

 
6,829

Owner occupied
 
6,534

 
—

 
67

 
(89
)
 
6,512

 
—

 
6,512

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
509

 
—

 
27

 
(175
)
 
361

 
—

 
361

Residential construction
 
1,109

 
—

 
31

 
237

 
1,377

 
—

 
1,377

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
782

 
—

 
—

 
203

 
985

 
—

 
985

Owner occupied
 
1,768

 
—

 
—

 
(386
)
 
1,382

 
—

 
1,382

Consumer
 
3,360

 
(465
)
 
248

 
408

 
3,551

 
45

 
3,506

Purchased credit impaired
 
9,395

 
(1,800
)
 
1,204

 
(738
)
 
8,061

 
—

 
8,061

Unallocated
 
968

 
—

 
—

 
(737
)
 
231

 
—

 
231

Total
 
$
71,021

 
$
(6,018
)
 
$
4,804

 
$
3,177

 
$
72,984

 
$
3,499

 
$
69,485

 
 
Beginning
Balance
 
Charge-offs
 
Recoveries
 
Provision (Recovery)
 
Ending
Balance
 
Specific
Reserve
 
General
Allocation
Six months ended June 30, 2017
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
36,050

 
$
(4,709
)
 
$
3,200

 
$
4,998

 
$
39,539

 
$
3,425

 
$
36,114

Unsecured
 
960

 
(18
)
 
109

 
96

 
1,147

 
—

 
1,147

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
599

 
(460
)
 
340

 
149

 
628

 
4

 
624

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
1,797

 
—

 
—

 
559

 
2,356

 
—

 
2,356

Income property
 
7,342

 
—

 
95

 
(583
)
 
6,854

 
25

 
6,829

Owner occupied
 
6,439

 
—

 
110

 
(37
)
 
6,512

 
—

 
6,512

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
316

 
(14
)
 
47

 
12

 
361

 
—

 
361

Residential construction
 
669

 
—

 
40

 
668

 
1,377

 
—

 
1,377

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
404

 
—

 
—

 
581

 
985

 
—

 
985

Owner occupied
 
1,192

 
—

 
—

 
190

 
1,382

 
—

 
1,382

Consumer
 
3,534

 
(893
)
 
533

 
377

 
3,551

 
45

 
3,506

Purchased credit impaired
 
10,515

 
(3,739
)
 
2,348

 
(1,063
)
 
8,061

 
—

 
8,061

Unallocated
 
226

 
—

 
—

 
5

 
231

 
—

 
231

Total
 
$
70,043

 
$
(9,833
)
 
$
6,822

 
$
5,952

 
$
72,984

 
$
3,499

 
$
69,485


 
 
Beginning
Balance
 
Charge-offs
 
Recoveries
 
Provision (Recovery)
 
Ending
Balance
 
Specific
Reserve
 
General
Allocation
Three months ended June 30, 2016
 
(in thousands)
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
32,114

 
$
(2,900
)
 
$
728

 
$
1,866

 
$
31,808

 
$
2,486

 
$
29,322

Unsecured
 
1,300

 
(41
)
 
25

 
(19
)
 
1,265

 
—

 
1,265

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
654

 
(35
)
 
20

 
35

 
674

 
1

 
673

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
1,262

 
(26
)
 
2

 
184

 
1,422

 
—

 
1,422

Income property
 
7,402

 
—

 
120

 
524

 
8,046

 
100

 
7,946

Owner occupied
 
6,086

 
—

 
8

 
242

 
6,336

 
—

 
6,336

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
640

 
—

 
2

 
(55
)
 
587

 
—

 
587

Residential construction
 
1,449

 
—

 
3

 
(76
)
 
1,376

 
—

 
1,376

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
715

 
—

 
1

 
188

 
904

 
—

 
904

Owner occupied
 
1,210

 
—

 
—

 
174

 
1,384

 
—

 
1,384

Consumer
 
3,368

 
(334
)
 
201

 
325

 
3,560

 
118

 
3,442

Purchased credit impaired
 
13,064

 
(2,898
)
 
1,524

 
91

 
11,781

 
—

 
11,781

Unallocated
 
—

 
—

 
—

 
161

 
161

 
—

 
161

Total
 
$
69,264

 
$
(6,234
)
 
$
2,634

 
$
3,640

 
$
69,304

 
$
2,705

 
$
66,599

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

 
$
(6,670
)
 
$
1,339

 
$
4,818

 
$
31,808

 
$
2,486

 
$
29,322

Unsecured
 
1,299

 
(44
)
 
76

 
(66
)
 
1,265

 
—

 
1,265

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
916

 
(35
)
 
61

 
(268
)
 
674

 
1

 
673

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
1,178

 
(26
)
 
2

 
268

 
1,422

 
—

 
1,422

Income property
 
6,616

 
—

 
181

 
1,249

 
8,046

 
100

 
7,946

Owner occupied
 
5,550

 
—

 
16

 
770

 
6,336

 
—

 
6,336

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

 
—

 
53

 
195

 
587

 
—

 
587

Residential construction
 
733

 
—

 
206

 
437

 
1,376

 
—

 
1,376

Commercial & multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
388

 
—

 
2

 
514

 
904

 
—

 
904

Owner occupied
 
1,006

 
—

 
—

 
378

 
1,384

 
—

 
1,384

Consumer
 
3,531

 
(600
)
 
366

 
263

 
3,560

 
118

 
3,442

Purchased credit impaired
 
13,726

 
(5,764
)
 
3,075

 
744

 
11,781

 
—

 
11,781

Unallocated
 
569

 
—

 
—

 
(408
)
 
161

 
—

 
161

Total
 
$
68,172

 
$
(13,139
)
 
$
5,377

 
$
8,894

 
$
69,304

 
$
2,705

 
$
66,599
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 Sheets, are summarized as follows:
 
 
Three Months Ended
 
Six Months Ended
 
 
June 30,
 
June 30,
 
 
2017
 
2016
 
2017
 
2016
 
 
(in thousands)
Balance at beginning of period
 
$
3,555

 
$
2,930

 
$
2,705

 
$
2,930

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

 
(150
)
 
850

 
(150
)
Balance at end of period
 
$
3,555

 
$
2,780

 
$
3,555

 
$
2,780
Financing Receivable Credit Quality Indicators
The following is an analysis of the credit quality of our loan portfolio, excluding PCI loans, as of June 30, 2017 and December 31, 2016:
 
 
Pass
 
Special Mention
 
Substandard
 
Doubtful
 
Loss
 
Total
June 30, 2017
 
(in thousands)
Loans, excluding PCI loans:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
2,423,195

 
$
74,148

 
$
107,021

 
$
—

 
$
—

 
$
2,604,364

Unsecured
 
93,716

 
701

 
1,002

 
—

 
—

 
95,419

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
168,062

 
1,204

 
1,788

 
—

 
—

 
171,054

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
274,000

 
4,761

 
4,759

 
—

 
—

 
283,520

Income property
 
1,328,708

 
8,678

 
18,381

 
—

 
—

 
1,355,767

Owner occupied
 
1,098,775

 
8,269

 
23,723

 
—

 
—

 
1,130,767

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
6,022

 
—

 
27

 
—

 
—

 
6,049

Residential construction
 
132,555

 
399

 
213

 
—

 
—

 
133,167

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
153,529

 
—

 
—

 
—

 
—

 
153,529

Owner occupied
 
35,416

 
—

 
4,050

 
—

 
—

 
39,466

Consumer
 
311,990

 
2

 
8,127

 
—

 
—

 
320,119

Total
 
$
6,025,968

 
$
98,162

 
$
169,091

 
$
—

 
$
—

 
6,293,221

Less:
 
 
 
 
 
 
 
 
 
 
 
 
Allowance for loan and lease losses
 
64,923

Loans, excluding PCI loans, net
 
$
6,228,298

 
 
Pass
 
Special Mention
 
Substandard
 
Doubtful
 
Loss
 
Total
December 31, 2016
 
(in thousands)
Loans, excluding PCI loans:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
2,289,307

 
$
65,846

 
$
96,437

 
$
—

 
$
—

 
$
2,451,590

Unsecured
 
93,721

 
800

 
216

 
—

 
—

 
94,737

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
164,797

 
395

 
2,740

 
—

 
—

 
167,932

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
263,195

 
3,228

 
4,391

 
—

 
—

 
270,814

Income property
 
1,341,978

 
17,902

 
9,866

 
—

 
—

 
1,369,746

Owner occupied
 
1,027,019

 
6,608

 
26,351

 
—

 
—

 
1,059,978

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
11,541

 
—

 
15

 
—

 
—

 
11,556

Residential construction
 
108,941

 
—

 
688

 
—

 
—

 
109,629

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
103,779

 
—

 
—

 
—

 
—

 
103,779

Owner occupied
 
98,948

 
88

 
4,444

 
—

 
—

 
103,480

Consumer
 
317,728

 
—

 
6,794

 
—

 
—

 
324,522

Total
 
$
5,820,954

 
$
94,867

 
$
151,942

 
$
—

 
$
—

 
6,067,763

Less:
 
 
 
 
 
 
 
 
 
 
 
 
Allowance for loan and lease losses
 
59,528

Loans, excluding PCI loans, net
 
$
6,008,235


The following is an analysis of the credit quality of our PCI loan portfolio as of June 30, 2017 and December 31, 2016:
 
 
Pass
 
Special Mention
 
Substandard
 
Doubtful
 
Loss
 
Total
June 30, 2017
 
(in thousands)
PCI loans:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
14,930

 
$
87

 
$
819

 
$
—

 
$
—

 
$
15,836

Unsecured
 
703

 
—

 
69

 
—

 
—

 
772

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
16,379

 
—

 
863

 
—

 
—

 
17,242

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
10,411

 
—

 
—

 
—

 
—

 
10,411

Income property
 
26,047

 
—

 
138

 
—

 
—

 
26,185

Owner occupied
 
50,999

 
—

 
803

 
—

 
—

 
51,802

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
382

 
—

 
71

 
—

 
—

 
453

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
786

 
—

 
—

 
—

 
—

 
786

Owner occupied
 
288

 
—

 
—

 
—

 
—

 
288

Consumer
 
14,998

 
—

 
529

 
—

 
—

 
15,527

Total
 
$
135,923

 
$
87

 
$
3,292

 
$
—

 
$
—

 
139,302

Less:
 
 
 
 
 
 
 
 
 
 
 
 
Valuation discount resulting from acquisition accounting
 
9,449

Allowance for loan losses
 
8,061

PCI loans, net
 
$
121,792

 
 
Pass
 
Special Mention
 
Substandard
 
Doubtful
 
Loss
 
Total
December 31, 2016
 
(in thousands)
PCI loans:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial business:
 
 
 
 
 
 
 
 
 
 
 
 
Secured
 
$
18,824

 
$
92

 
$
1,954

 
$
—

 
$
—

 
$
20,870

Unsecured
 
736

 
—

 
—

 
—

 
—

 
736

Real estate:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential
 
19,293

 
—

 
1,350

 
—

 
—

 
20,643

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Commercial land
 
7,333

 
—

 
213

 
—

 
—

 
7,546

Income property
 
31,042

 
—

 
1,678

 
—

 
—

 
32,720

Owner occupied
 
53,623

 
—

 
906

 
—

 
—

 
54,529

Real estate construction:
 
 
 
 
 
 
 
 
 
 
 
 
One-to-four family residential:
 
 
 
 
 
 
 
 
 
 
 
 
Land and acquisition
 
744

 
—

 
88

 
—

 
—

 
832

Commercial and multifamily residential:
 
 
 
 
 
 
 
 
 
 
 
 
Income property
 
1,217

 
—

 
—

 
—

 
—

 
1,217

Owner occupied
 
509

 
—

 
—

 
—

 
—

 
509

Consumer
 
17,202

 
—

 
447

 
—

 
—

 
17,649

Total
 
$
150,523

 
$
92

 
$
6,636

 
$
—

 
$
—

 
157,251

Less:
 
 
 
 
 
 
 
 
 
 
 
 
Valuation discount resulting from acquisition accounting
 
11,591

Allowance for loan losses
 
10,515

PCI loans, net
 
$
135,145
v3.7.0.1
Other Real Estate Owned (Tables)
 6 Months Ended
Jun. 30, 2017
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 six months ended June 30, 2017 and 2016:
 
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
 
2017
 
2016
 
2017
 
2016
 
 
(in thousands)
Balance, beginning of period
 
$
4,519

 
$
12,427

 
$
5,998

 
$
13,738

Transfers in
 
—

 
206

 
—

 
311

Valuation adjustments
 
(33
)
 
(139
)
 
(226
)
 
(276
)
Proceeds from sale of OREO property
 
(444
)
 
(1,950
)
 
(1,719
)
 
(3,276
)
Gain on sale of OREO, net
 
16

 
69

 
5

 
116

Balance, end of period
 
$
4,058

 
$
10,613

 
$
4,058

 
$
10,613
v3.7.0.1
Covered Assets and FDIC Loss-sharing Asset (Tables)
 6 Months Ended
Jun. 30, 2017
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 six months ended June 30, 2017 and 2016:
 
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
 
2017
 
2016
 
2017
 
2016
 
 
(in thousands)
Balance at beginning of period
 
$
3,239

 
$
5,954

 
$
3,535

 
$
6,568

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

 
(396
)
 
184

 
(43
)
FDIC reimbursable losses (recoveries), net
 
57

 
(302
)
 
(149
)
 
(166
)
Termination of FDIC loss-sharing agreements
 
(3,123
)
 
—

 
(3,123
)
 
—

Adjustments reflected in noninterest income (1):
 
 
 
 
 
 
 
 
Amortization, net
 
(99
)
 
(883
)
 
(414
)
 
(2,215
)
Loan impairment (recapture)
 
—

 
(20
)
 
40

 
127

Sale of other real estate
 
11

 
(24
)
 
18

 
120

Valuation adjustments of other real estate owned
 
—

 
(40
)
 
—

 
(22
)
Other
 
(85
)
 
(23
)
 
(91
)
 
(103
)
Balance at end of period
 
$
—

 
$
4,266

 
$
—

 
$
4,266


__________
(1) Amounts shown in the table above for adjustments reflected in noninterest income include only those adjustments recorded to the noninterest income line item “Change in FDIC loss-sharing asset” in the Consolidated Statements of Income and do not include the charge related to the termination of the FDIC loss-sharing agreements.
v3.7.0.1
Goodwill and Intangible Assets (Tables)
 6 Months Ended
Jun. 30, 2017
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 June 30,
 
Six Months Ended June 30,
 
 
2017
 
2016
 
2017
 
2016
 
 
(in thousands)
Goodwill
 
 
 
 
 
 
 
 
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
 
(43,235
)
 
(37,523
)
 
(41,886
)
 
(35,940
)
Core deposit intangible, net at beginning of period
 
15,363

 
21,075

 
16,712

 
22,658

CDI current period amortization
 
(1,249
)
 
(1,483
)
 
(2,598
)
 
(3,066
)
Total core deposit intangible, net at end of period
 
14,114

 
19,592

 
14,114

 
19,592

Intangible assets not subject to amortization
 
919

 
919

 
919

 
919

Other intangible assets, net at end of period
 
15,033

 
20,511

 
15,033

 
20,511

Total goodwill and other intangible assets at end of period
 
$
397,795

 
$
403,273

 
$
397,795

 
$
403,273
Estimated Future Amortization Expense of Core Deposit Intangibles
The following table provides the estimated future amortization expense of core deposit intangibles for the remaining six months ending December 31, 2017 and the succeeding four years:
 
 
Amount
 
 
(in thousands)
Year ending December 31,
 
 
2017
 
$
2,315

2018
 
3,855

2019
 
2,951

2020
 
2,048

2021
 
1,440
v3.7.0.1
Derivatives and Balance Sheet Offsetting (Tables)
 6 Months Ended
Jun. 30, 2017
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
June 30, 2017
(in thousands)
Assets
 
 
 
 
 
 
 
 
 
Interest rate contracts
$
9,077

 
$
—

 
$
9,077

 
$
—

 
$
9,077

Liabilities
 
 
 
 
 
 
 
 
 
Interest rate contracts
$
9,096

 
$
—

 
$
9,096

 
$
(9,096
)
 
$
—

Repurchase agreements
$
65,895

 
$
—

 
$
65,895

 
$
(65,895
)
 
$
—

 
 
 
 
 
 
 
 
 
 
December 31, 2016
 
 
 
 
 
 
 
 
 
Assets
 
 
 
 
 
 
 
 
 
Interest rate contracts
$
9,012

 
$
—

 
$
9,012

 
$
—

 
$
9,012

Liabilities
 
 
 
 
 
 
 
 
 
Interest rate contracts
$
9,036

 
$
—

 
$
9,036

 
$
(9,036
)
 
$
—

Repurchase agreements
$
80,822

 
$
—

 
$
80,822

 
$
(80,822
)
 
$
—
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:
 
 
June 30, 2017
 
 
(in thousands)
Washington and Oregon State to secure public deposits
 
$
244,580

Federal Reserve Bank to secure borrowings
 
54,877

Other securities pledged
 
122,932

Total securities pledged as collateral
 
$
422,389
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 June 30, 2017 and December 31, 2016:
 
Asset Derivatives
 
Liability Derivatives
 
June 30, 2017
 
December 31, 2016
 
June 30, 2017
 
December 31, 2016
 
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
 
$
9,077

 
Other assets
 
$
9,012

 
Other liabilities
 
$
9,096

 
Other liabilities
 
$
9,036
Available-for-sale Securities [Member]  
Derivative [Line Items]  
Carrying Value of Securities Pledged As Collateral
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
June 30, 2017
 
(in thousands)
Class of collateral pledged for repurchase agreements
 
 
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations
 
$
40,895

 
$
—

 
$
—

 
$
25,000

 
$
65,895

Gross amount of recognized liabilities for repurchase agreements
 
 
 
 
 
 
 
 
 
65,895

Amounts related to agreements not included in offsetting disclosure
 
 
 
 
 
 
 
 
 
$
—
v3.7.0.1
Accumulated Other Comprehensive Income (Tables)
 6 Months Ended
Jun. 30, 2017
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 six month periods ended June 30, 2017 and 2016:
 
 
Unrealized Gains and Losses on Available-for-Sale Securities (1)
 
Unrealized Gains and Losses on Pension Plan Liability (1)
 
Total (1)
Three months ended June 30, 2017
 
(in thousands)
Beginning balance
 
$
(11,002
)
 
$
(1,604
)
 
$
(12,606
)
Other comprehensive income before reclassifications
 
6,033

 
—

 
6,033

Amounts reclassified from accumulated other comprehensive income
 
—

 
45

 
45

Net current-period other comprehensive income
 
6,033

 
45

 
6,078

Ending balance
 
$
(4,969
)
 
$
(1,559
)
 
$
(6,528
)
Three months ended June 30, 2016
 
 
 
 
 
 
Beginning balance
 
$
18,918

 
$
(6,575
)
 
$
12,343

Other comprehensive income before reclassifications
 
8,508

 
—

 
8,508

Amounts reclassified from accumulated other comprehensive income (loss)
 
(146
)
 
106

 
(40
)
Net current-period other comprehensive income
 
8,362

 
106

 
8,468

Ending balance
 
$
27,280

 
$
(6,469
)
 
$
20,811

Six months ended June 30, 2017
 
 
 
 
 
 
Beginning balance
 
$
(12,704
)
 
$
(6,295
)
 
$
(18,999
)
Other comprehensive income before reclassifications
 
7,735

 
4,604

 
12,339

Amounts reclassified from accumulated other comprehensive income
 
—

 
132

 
132

Net current-period other comprehensive income
 
7,735

 
4,736

 
12,471

Ending balance
 
$
(4,969
)
 
$
(1,559
)
 
$
(6,528
)
Six months ended June 30, 2016
 
 
 
 
 
 
Beginning balance
 
$
386

 
$
(6,681
)
 
$
(6,295
)
Other comprehensive income before reclassifications
 
27,278

 
—

 
27,278

Amounts reclassified from accumulated other comprehensive income (loss)
 
(384
)
 
212

 
(172
)
Net current-period other comprehensive income
 
26,894

 
212

 
27,106

Ending balance
 
$
27,280

 
$
(6,469
)
 
$
20,811

__________
(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 six month periods ended June 30, 2017 and 2016:
 
 
Amount Reclassified from Accumulated Other Comprehensive Income (Loss)
 
 
 
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
Affected line Item in the Consolidated
 
 
2017
 
2016
 
2017
 
2016
 
Statement of Income
 
 
(in thousands)
 
 
Unrealized gains and losses on available-for-sale securities
 
 
 
 
 
 
 
 
 
 
Investment securities gains
 
$
—

 
$
229

 
$
—

 
$
602

 
Investment securities gains, net
 
 
—

 
229

 
—

 
602

 
Total before tax
 
 
—

 
(83
)
 
—

 
(218
)
 
Income tax provision
 
 
$
—

 
$
146

 
$
—

 
$
384

 
Net of tax
 
 
 
 
 
 
 
 
 
 
 
Amortization of pension plan liability
 
 
 
 
 
 
 
 
 
 
Actuarial losses
 
$
(71
)
 
$
(167
)
 
$
(207
)
 
$
(334
)
 
Compensation and employee benefits
 
 
(71
)
 
(167
)
 
(207
)
 
(334
)
 
Total before tax
 
 
26

 
61

 
75

 
122

 
Income tax benefit
 
 
$
(45
)
 
$
(106
)
 
$
(132
)
 
$
(212
)
 
Net of tax
v3.7.0.1
Fair Value Accounting and Measurement (Tables)
 6 Months Ended
Jun. 30, 2017
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 June 30, 2017 and December 31, 2016 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
June 30, 2017
 
(in thousands)
Assets
 
 
 
 
 
 
 
 
Securities available for sale:
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations
 
$
1,423,958

 
$
—

 
$
1,423,958

 
$
—

State and municipal debt securities
 
483,093

 
—

 
483,093

 
—

U.S. government agency and government-sponsored enterprise securities
 
352,238

 
—

 
352,238

 
—

U.S. government securities
 
250

 
250

 
—

 
—

Other securities
 
5,097

 
—

 
5,097

 
—

Total securities available for sale
 
$
2,264,636

 
$
250

 
$
2,264,386

 
$
—

Other assets (Interest rate contracts)
 
$
9,077

 
$
—

 
$
9,077

 
$
—

Liabilities
 
 
 
 
 
 
 
 
Other liabilities (Interest rate contracts)
 
$
9,096

 
$
—

 
$
9,096

 
$
—

 
 
Fair value
 
Fair Value Measurements at Reporting Date Using
 
 
Level 1
 
Level 2
 
Level 3
December 31, 2016
 
(in thousands)
Assets
 
 
 
 
 
 
 
 
Securities available for sale:
 
 
 
 
 
 
 
 
U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations
 
$
1,465,732

 
$
—

 
$
1,465,732

 
$
—

State and municipal debt securities
 
475,060

 
—

 
475,060

 
—

U.S. government agency and government-sponsored enterprise securities
 
331,902

 
—

 
331,902

 
—

U.S. government securities
 
800

 
800

 
—

 
—

Other securities
 
5,083

 
—

 
5,083

 
—

Total securities available for sale
 
$
2,278,577

 
$
800

 
$
2,277,777

 
$
—

Other assets (Interest rate contracts)
 
$
9,012

 
$
—

 
$
9,012

 
$
—

Liabilities
 
 
 
 
 
 
 
 
Other liabilities (Interest rate contracts)
 
$
9,036

 
$
—

 
$
9,036

 
$
—
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
June 30, 2017
 
Fair Value Measurements at Reporting Date Using
 
Losses During the Three Months Ended
June 30, 2017
 
Losses During the Six Months Ended
June 30, 2017
 
 
Level 1
 
Level 2
 
Level 3
 
 
 
(in thousands)
Impaired loans
 
$
7,019

 
$
—

 
$
—

 
$
7,019

 
$
3,669

 
$
3,669

OREO
 
105

 
—

 
—

 
105

 
33

 
33

 
 
$
7,124

 
$
—

 
$
—

 
$
7,124

 
$
3,702

 
$
3,702

 
 
Fair value at
June 30, 2016
 
Fair Value Measurements at Reporting Date Using
 
Losses During the Three Months Ended
June 30, 2016
 
Losses During the Six Months Ended June, 2016
 
 
Level 1
 
Level 2
 
Level 3
 
 
 
(in thousands)
Impaired loans
 
$
3,218

 
$
—

 
$
—

 
$
3,218

 
$
2,691

 
$
2,691

OREO
 
6,338

 
—

 
—

 
6,338

 
138

 
233

 
 
$
9,556

 
$
—

 
$
—

 
$
9,556

 
$
2,829

 
$
2,924
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 June 30, 2017 and December 31, 2016:
 
 
June 30, 2017
 
 
Carrying
Amount
 
Fair
Value
 
Level 1
 
Level 2
 
Level 3
 
 
(in thousands)
Assets
 
 
 
 
 
 
 
 
 
 
Cash and due from banks
 
$
197,623

 
$
197,623

 
$
197,623

 
$
—

 
$
—

Interest-earning deposits with banks
 
14,425

 
14,425

 
14,425

 
—

 
—

Securities available for sale
 
2,264,636

 
2,264,636

 
250

 
2,264,386

 
—

FHLB stock
 
16,360

 
16,360

 
—

 
16,360

 
—

Loans held for sale
 
6,918

 
6,918

 
—

 
6,918

 
—

Loans
 
6,350,090

 
6,233,490

 
—

 
—

 
6,233,490

Interest rate contracts
 
9,077

 
9,077

 
—

 
9,077

 
—

Liabilities
 
 
 
 
 
 
 
 
 
 
Deposits
 
$
8,072,464

 
$
8,067,980

 
$
7,687,671

 
$
380,309

 
$
—

FHLB advances
 
159,474

 
160,397

 
—

 
160,397

 
—

Repurchase agreements
 
65,895

 
66,102

 
—

 
66,102

 
—

Interest rate contracts
 
9,096

 
9,096

 
—

 
9,096

 
—


 
 
December 31, 2016
 
 
Carrying
Amount
 
Fair
Value
 
Level 1
 
Level 2
 
Level 3
 
 
(in thousands)
Assets
 
 
 
 
 
 
 
 
 
 
Cash and due from banks
 
$
193,038

 
$
193,038

 
$
193,038

 
$
—

 
$
—

Interest-earning deposits with banks
 
31,200

 
31,200

 
31,200

 
—

 
—

Securities available for sale
 
2,278,577

 
2,278,577

 
800

 
2,277,777

 
—

FHLB stock
 
10,240

 
10,240

 
—

 
10,240

 
—

Loans held for sale
 
5,846

 
5,846

 
—

 
5,846

 
—

Loans
 
6,143,380

 
6,040,439

 
—

 
—

 
6,040,439

FDIC loss-sharing asset
 
3,535

 
867

 
—

 
—

 
867

Interest rate contracts
 
9,012

 
9,012

 
—

 
9,012

 
—

Liabilities
 
 
 
 
 
 
 
 
 
 
Deposits
 
$
8,059,415

 
$
8,055,168

 
$
7,653,122

 
$
402,046

 
$
—

FHLB advances
 
6,493

 
7,070

 
—

 
7,070

 
—

Repurchase agreements
 
80,822

 
81,131

 
—

 
81,131

 
—

Interest rate contracts
 
9,036

 
9,036

 
—

 
9,036

 
—
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
June 30, 2017
 
Valuation Technique
 
Unobservable Input
 
Range (Weighted Average) (1)
 
 
(dollars in thousands)
Impaired loans - collateral-dependent (3)
 
$
7,019

 
Fair Market Value of Collateral
 
Adjustment to Stated Value
 
0.00% - 75.00% (60.59%)
OREO
 
$
105

 
Fair Market Value of Collateral
 
Adjustment to Appraisal Value
 
N/A (2)
(1) Discount applied to appraisal value or stated value (in the case of accounts receivable, fixed assets, and inventory).
(2) Quantitative disclosures are not provided for OREO because there were no adjustments made to the appraisal values.
(3) Collateral consists of accounts receivable, fixed assets, inventory, and real estate.

 
 
Fair value at
June 30, 2016
 
Valuation Technique
 
Unobservable Input
 
Range (Weighted Average) (1)
 
 
(dollars in thousands)
Impaired loans - collateral-dependent (3)
 
$
303

 
Fair Market Value of Collateral
 
Adjustment to Stated Value
 
N/A (2)
Impaired loans - other
 
$
2,915

 
Discounted Cash Flow
 
Discount Rate
 
2.99% - 10.25% (6.03%)
OREO
 
$
6,338

 
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.
v3.7.0.1
Earnings per Common Share (Tables)
 6 Months Ended
Jun. 30, 2017
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 six months ended June 30, 2017 and 2016:
 
 
Three Months Ended
 
Six Months Ended
 
 
June 30,
 
June 30,
 
 
2017
 
2016
 
2017
 
2016
 
 
(in thousands except per share)
Basic EPS:
 
 
 
 
 
 
 
 
Net income
 
$
27,132

 
$
25,405

 
$
56,331

 
$
46,664

Less: Earnings allocated to participating securities:
 
 
 
 
 
 
 
 
Preferred shares
 
—

 
45

 
3

 
82

Nonvested restricted shares
 
362

 
343

 
759

 
578

Earnings allocated to common shareholders
 
$
26,770

 
$
25,017

 
$
55,569

 
$
46,004

Weighted average common shares outstanding
 
57,520

 
57,185

 
57,437

 
57,149

Basic earnings per common share
 
$
0.47

 
$
0.44

 
$
0.97

 
$
0.80

Diluted EPS:
 
 
 
 
 
 
 
 
Earnings allocated to common shareholders
 
$
26,770

 
$
25,017

 
$
55,569

 
$
46,004

Weighted average common shares outstanding
 
57,520

 
57,185

 
57,437

 
57,149

Dilutive effect of equity awards
 
5

 
10

 
5

 
11

Weighted average diluted common shares outstanding
 
57,525

 
57,195

 
57,442

 
57,160

Diluted earnings per common share
 
$
0.47

 
$
0.44

 
$
0.97

 
$
0.80

Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive
 
12

 
19

 
13

 
23
v3.7.0.1
Accounting Pronouncements Recently Issued Narrative - Impact of implementation of new accounting standards (Details) - Accounting Standards Update 2016-09 [Member] - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2017
Dec. 31, 2016
Cumulative Effect of New Accounting Principle in Period of Adoption     $ 67
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income $ 100 $ 1,300  
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Diluted Earnings Per Share   $ 0.02  
Retained Earnings [Member]      
Cumulative Effect of New Accounting Principle in Period of Adoption     (117)
Common Stock [Member]      
Cumulative Effect of New Accounting Principle in Period of Adoption     $ 184
v3.7.0.1
Securities (Securities Available for Sale) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]          
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds $ 0 $ 44,534 $ 0 $ 83,410  
Securities available-for-sale, amortized cost 2,272,959   2,272,959   $ 2,299,037
Available-for-sale Debt Securities Gross Unrealized Gain, instant 14,313   14,313   10,231
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax (22,636)   (22,636)   (30,691)
Securities available for sale 2,264,636   2,264,636   2,278,577
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 1,438,875   1,438,875   1,486,690
Available-for-sale Debt Securities Gross Unrealized Gain, instant 3,478   3,478   2,760
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax (18,395)   (18,395)   (23,718)
Securities available for sale 1,423,958   1,423,958   1,465,732
State and Municipal Securities [Member]          
Schedule of Available-for-sale Securities [Line Items]          
Securities available-for-sale, amortized cost 476,510   476,510   473,914
Available-for-sale Debt Securities Gross Unrealized Gain, instant 9,279   9,279   6,343
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax (2,696)   (2,696)   (5,197)
Securities available for sale 483,093   483,093   475,060
U.S. Government and Government-Sponsored Enterprise Securities [Member]          
Schedule of Available-for-sale Securities [Line Items]          
Securities available-for-sale, amortized cost 352,039   352,039   332,348
Available-for-sale Debt Securities Gross Unrealized Gain, instant 1,486   1,486   1,065
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax (1,287)   (1,287)   (1,511)
Securities available for sale 352,238   352,238   331,902
US Government Securities [Member]          
Schedule of Available-for-sale Securities [Line Items]          
Securities available-for-sale, amortized cost 251   251   801
Available-for-sale Debt Securities Gross Unrealized Gain, instant 0   0   0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax (1)   (1)   (1)
Securities available for sale 250   250   800
Other Securities [Member]          
Schedule of Available-for-sale Securities [Line Items]          
Securities available-for-sale, amortized cost 5,284   5,284   5,284
Available-for-sale Debt Securities Gross Unrealized Gain, instant 70   70   63
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax (257)   (257)   (264)
Securities available for sale $ 5,097   $ 5,097   $ 5,083
v3.7.0.1
Securities (Schedule of Contractual Maturities of Investment Securities Available for Sale) (Details)
$ in Thousands
Jun. 30, 2017
USD ($)
Available-for-sale Securities [Abstract]  
Due within one year, Amortized Cost $ 99,775
Due after one year through five years, Amortized Cost 461,043
Due after five years through ten years, Amortized Cost 726,133
Due after ten years, Amortized Cost 980,724
No stated maturity date, Amortized Cost Basis 5,284
Total investment securities available-for-sale, Amortized Cost 2,272,959
Due within one year, Fair Value 99,740
Due after one year through five years, Fair Value 464,716
Due after five years through ten years, Fair Value 724,520
Due after ten years, Fair Value 970,563
No stated maturity date, Fair Value 5,097
Total investment securities available-for-sale, Fair Value $ 2,264,636
v3.7.0.1
Securities (Carrying Value of Securities Pledged as Collateral) (Details)
$ in Thousands
Jun. 30, 2017
USD ($)
Schedule of Available-for-sale Securities [Line Items]  
Carrying amount of securities pledged as collateral $ 422,389
Washington and Oregon State Public Deposits [Member]  
Schedule of Available-for-sale Securities [Line Items]  
Carrying amount of securities pledged as collateral 244,580
Federal Reserve Bank Advances [Member]  
Schedule of Available-for-sale Securities [Line Items]  
Carrying amount of securities pledged as collateral 54,877
Other Securities [Member]  
Schedule of Available-for-sale Securities [Line Items]  
Carrying amount of securities pledged as collateral $ 122,932
v3.7.0.1
Securities (Summary of Gross Unrealized Losses and Fair Value of the Investments with Unrealized Losses) (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Debt Securities Gross Unrealized Gain, instant $ 14,313 $ 10,231
Less than 12 Months Fair Value 1,163,861 1,461,783
Less than 12 Months Unrealized Losses (16,199) (25,415)
12 Months or More Fair Value 196,195 165,173
12 Months or More Unrealized Losses (6,437) (5,276)
Total Fair Value 1,360,056 1,626,956
Total Unrealized Losses (22,636) (30,691)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax 22,636 30,691
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 3,478 2,760
Less than 12 Months Fair Value 858,558 1,029,116
Less than 12 Months Unrealized Losses (12,683) (18,788)
12 Months or More Fair Value 180,212 159,046
12 Months or More Unrealized Losses (5,712) (4,930)
Total Fair Value 1,038,770 1,188,162
Total Unrealized Losses (18,395) (23,718)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax 18,395 23,718
State and Municipal Securities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Debt Securities Gross Unrealized Gain, instant 9,279 6,343
Less than 12 Months Fair Value 108,038 211,342
Less than 12 Months Unrealized Losses (2,189) (5,064)
12 Months or More Fair Value 13,246 3,384
12 Months or More Unrealized Losses (507) (133)
Total Fair Value 121,284 214,726
Total Unrealized Losses (2,696) (5,197)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax 2,696 5,197
US Government Corporations and Agencies Securities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Debt Securities Gross Unrealized Gain, instant 1,486 1,065
Less than 12 Months Fair Value 194,738 218,811
Less than 12 Months Unrealized Losses (1,287) (1,511)
12 Months or More Fair Value 0 0
12 Months or More Unrealized Losses 0 0
Total Fair Value 194,738 218,811
Total Unrealized Losses (1,287) (1,511)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax 1,287 1,511
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 251 251
Less than 12 Months Unrealized Losses (1) (1)
12 Months or More Fair Value 0 0
12 Months or More Unrealized Losses 0 0
Total Fair Value 251 251
Total Unrealized Losses (1) (1)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax 1 1
Other Securities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Debt Securities Gross Unrealized Gain, instant 70 63
Less than 12 Months Fair Value 2,276 2,263
Less than 12 Months Unrealized Losses (39) (51)
12 Months or More Fair Value 2,737 2,743
12 Months or More Unrealized Losses (218) (213)
Total Fair Value 5,013 5,006
Total Unrealized Losses (257) (264)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax $ 257 $ 264
v3.7.0.1
Securities (Narrative) (Details)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
USD ($)
security
Jun. 30, 2016
USD ($)
Jun. 30, 2017
USD ($)
security
Jun. 30, 2016
USD ($)
Schedule of Available-for-sale Securities [Line Items]        
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds | $ $ 0 $ 44,534 $ 0 $ 83,410
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 172   172  
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year 54   54  
Municipal Bonds [Member]        
Schedule of Available-for-sale Securities [Line Items]        
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions 99   99  
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year 11   11  
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 22   22  
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year 0   0  
US Government Securities [Member]        
Schedule of Available-for-sale Securities [Line Items]        
Number Of Securities In Continuous Loss Position For Twelve Months or More 0   0  
Number Of Securities In Unrealized Loss Position 1   1  
Other Securities [Member]        
Schedule of Available-for-sale Securities [Line Items]        
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions 2   2  
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year 1   1  
v3.7.0.1
Securities Securities (Summary of Gross Realized Gains and Gross Realized Losses (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Investments, Debt and Equity Securities [Abstract]        
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds $ 0 $ 44,534 $ 0 $ 83,410
Available-for-sale Securities, Gross Realized Gains 0 229 0 602
Available-for-sale Securities, Gross Realized Losses 0 0 0 0
Investment securities gains, net $ 0 $ 229 $ 0 $ 602
v3.7.0.1
Loans (Narrative) (Details)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
USD ($)
contract
Jun. 30, 2016
contract
Jun. 30, 2017
USD ($)
contract
Jun. 30, 2016
contract
Dec. 31, 2016
USD ($)
Financing Receivable, Recorded Investment [Line Items]          
Loans to related parties $ 10,100   $ 10,100   $ 10,100
Loans and Leases Receivable, Related Parties, Additions     203    
Repayments on related party loans     $ 200    
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract 0 0 0 0  
Loans Receivable [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged $ 2,280,000   $ 2,280,000   2,290,000
Federal Reserve Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged $ 70,100   $ 70,100   $ 54,200
v3.7.0.1
Loans (Analysis of Loan Portfolio by Major Types of Loans) (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]            
Less: unearned income on loans $ (30,665)   $ (33,718)      
Recorded Investment 6,423,074   6,213,423      
Allowance for loan losses (72,984) $ (71,021) (70,043) $ (69,304) $ (69,264) $ (68,172)
Loans, net 6,350,090   6,143,380      
Loans held for sale 6,918   5,846      
Loans, Excluding Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Less: unearned income on loans (30,665)   (33,718)      
Recorded Investment 6,293,221   6,067,763      
Allowance for loan losses (64,923)   (59,528)      
Loans, net 6,228,298   6,008,235      
Loans held for sale 6,918   5,846      
Loans and Leases Receivable, Gross 6,293,221   6,067,763      
Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Less: unearned income on loans 0   0      
Recorded Investment 129,853   145,660      
Allowance for loan losses (8,061)   (10,515)      
Loans, net 121,792   135,145      
Loans held for sale 0   0      
Loans and Leases Receivable, Gross 139,302   157,251      
Acquisition Accounting Valuation Discount on Covered Loans 9,449   11,591      
Commercial and Multifamily Residential Construction [Domain] | Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans and Leases Receivable, Gross 1,074   1,726      
One-to-Four Family Residential [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans and Leases Receivable, Gross, Consumer, Mortgage 187,885   188,193      
Loans and Leases Receivable, Gross, Consumer, Construction 140,409   122,719      
Allowance for loan losses (628) (645) (599) (674) (654) (916)
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 173,150   170,331      
Loans and Leases Receivable, Gross, Consumer, Construction 139,956   121,887      
Loans and Leases Receivable, Gross 171,054   167,932      
One-to-Four Family Residential [Member] | Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans and Leases Receivable, Gross, Consumer, Mortgage 14,735   17,862      
Loans and Leases Receivable, Gross, Consumer, Construction 453   832      
Loans and Leases Receivable, Gross 17,242   20,643      
Commercial and Multifamily Residential [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans Receivable, Gross, Commercial, Mortgage 2,871,945   2,809,061      
Loans Receivable, Gross, Commercial, Construction 196,526   210,683      
Commercial and Multifamily Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans Receivable, Gross, Commercial, Mortgage 2,787,560   2,719,830      
Loans Receivable, Gross, Commercial, Construction 195,565   209,118      
Commercial and Multifamily Residential [Member] | Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans Receivable, Gross, Commercial, Mortgage 84,385   89,231      
Loans Receivable, Gross, Commercial, Construction 961   1,565      
Loans and Leases Receivable, Gross 88,398   94,795      
Commercial Portfolio Segment [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans Receivable, Gross, Commercial and Industrial 2,719,767   2,571,239      
Commercial Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans Receivable, Gross, Commercial and Industrial 2,704,468   2,551,054      
Commercial Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans Receivable, Gross, Commercial and Industrial 15,299   20,185      
Loans and Leases Receivable, Gross 16,608   21,606      
Real Estate Portfolio Segment [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans Receivable Real Estate Mortgage 3,059,830   2,997,254      
Real Estate Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans Receivable Real Estate Mortgage 2,960,710   2,890,161      
Real Estate Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans Receivable Real Estate Mortgage 99,120   107,093      
Loans and Leases Receivable, Gross 105,640   115,438      
One-to-Four Family Residential Construction [Domain] | Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans and Leases Receivable, Gross 453   832      
Real Estate Construction Portfolio Segment [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans Receivable Real Estate Construction 336,935   333,402      
Real Estate Construction Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans Receivable Real Estate Construction 335,521   331,005      
Real Estate Construction Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans Receivable Real Estate Construction 1,414   2,397      
Loans and Leases Receivable, Gross 1,527   2,558      
Consumer Portfolio Segment [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans and Leases Receivable, Gross, Consumer 337,207   345,246      
Allowance for loan losses (3,551) $ (3,360) (3,534) $ (3,560) $ (3,368) $ (3,531)
Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans and Leases Receivable, Gross, Consumer 323,187   329,261      
Loans and Leases Receivable, Gross 320,119   324,522      
Consumer Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]            
Financing Receivable, Recorded Investment [Line Items]            
Loans and Leases Receivable, Gross, Consumer 14,020   15,985      
Loans and Leases Receivable, Gross $ 15,527   $ 17,649      
v3.7.0.1
Loans (Analysis of Nonaccrual Loans) (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]    
Recorded Investment Nonaccrual Loans $ 36,824 $ 27,756
Unpaid Principal Balance Nonaccrual Loans 54,236 42,289
Secured Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Recorded Investment Nonaccrual Loans 24,663 11,524
Unpaid Principal Balance Nonaccrual Loans 38,586 21,503
Unsecured Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Recorded Investment Nonaccrual Loans 84 31
Unpaid Principal Balance Nonaccrual Loans 237 303
One-to-Four Family Residential [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Recorded Investment Nonaccrual Loans 697 568
Unpaid Principal Balance Nonaccrual Loans 1,248 1,302
Commercial Land [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Recorded Investment Nonaccrual Loans 3,198 934
Unpaid Principal Balance Nonaccrual Loans 3,503 922
Income Property Multifamily [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Recorded Investment Nonaccrual Loans 3,411 4,005
Unpaid Principal Balance Nonaccrual Loans 3,741 4,247
Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Recorded Investment Nonaccrual Loans 658 6,248
Unpaid Principal Balance Nonaccrual Loans 2,137 9,030
Land And Acquisition [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Recorded Investment Nonaccrual Loans 27 14
Unpaid Principal Balance Nonaccrual Loans 27 102
Residential Construction [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Recorded Investment Nonaccrual Loans 214 549
Unpaid Principal Balance Nonaccrual Loans 214 549
Consumer Portfolio Segment [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Recorded Investment Nonaccrual Loans 3,872 3,883
Unpaid Principal Balance Nonaccrual Loans $ 4,543 $ 4,331
v3.7.0.1
Loans (Analysis of the Aged Loan Portfolio) (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual Loans $ 36,824 $ 27,756
Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Current Loans 6,237,874 6,031,078
Past Due Loans 18,523 8,929
Nonaccrual Loans 36,824 27,756
Loans Receivable, Net 6,293,221 6,067,763
Secured Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual Loans 24,663 11,524
Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Current Loans 2,572,664 2,439,250
Past Due Loans 7,037 816
Nonaccrual Loans 24,663 11,524
Loans Receivable, Net 2,604,364 2,451,590
Unsecured Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual Loans 84 31
Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Current Loans 95,132 94,118
Past Due Loans 203 588
Nonaccrual Loans 84 31
Loans Receivable, Net 95,419 94,737
One-to-Four Family Residential [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual Loans 697 568
One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Current Loans 169,244 164,416
Past Due Loans 1,113 2,948
Nonaccrual Loans 697 568
Loans Receivable, Net 171,054 167,932
Commercial Land [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual Loans 3,198 934
Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Current Loans 280,322 269,816
Past Due Loans 0 64
Nonaccrual Loans 3,198 934
Loans Receivable, Net 283,520 270,814
Income Property Multifamily [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual Loans 3,411 4,005
Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Current Loans 1,351,539 1,365,150
Past Due Loans 817 591
Nonaccrual Loans 3,411 4,005
Loans Receivable, Net 1,355,767 1,369,746
Owner Occupied [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual Loans 658 6,248
Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Current Loans 1,126,857 1,052,078
Past Due Loans 3,252 1,652
Nonaccrual Loans 658 6,248
Loans Receivable, Net 1,130,767 1,059,978
Land And Acquisition [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual Loans 27 14
Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Current Loans 6,022 11,542
Past Due Loans 0 0
Nonaccrual Loans 27 14
Loans Receivable, Net 6,049 11,556
Residential Construction [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual Loans 214 549
Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Current Loans 132,953 109,080
Past Due Loans 0 0
Nonaccrual Loans 214 549
Loans Receivable, Net 133,167 109,629
Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Current Loans 153,529 103,779
Past Due Loans 0 0
Nonaccrual Loans 0 0
Loans Receivable, Net 153,529 103,779
Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Current Loans 35,416 103,480
Past Due Loans 4,050 0
Nonaccrual Loans 0 0
Loans Receivable, Net 39,466 103,480
Consumer Portfolio Segment [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual Loans 3,872 3,883
Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Current Loans 314,196 318,369
Past Due Loans 2,051 2,270
Nonaccrual Loans 3,872 3,883
Loans Receivable, Net 320,119 324,522
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 3,483 1,157
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 1,810 10
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 23 301
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 148 500
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 0 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 256 111
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 943 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 0 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 303 235
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 15,040 7,772
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 5,227 806
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 180 287
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 965 2,448
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 64
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 561 480
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 2,309 1,652
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 0 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 0 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 4,050 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 1,748 2,035
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
v3.7.0.1
Loans (Analysis of Impaired Loans) (Details) - Loans, Excluding Purchased Credit Impaired Loans [Member] - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment of Loans Collectively Measured for Contingency Provision $ 6,253,549   $ 6,253,549   $ 6,042,304
Recorded Investment of Loans Individually Measured for Specific Impairment 39,672   39,672   25,459
Recorded Investment 23,675   23,675   17,592
Unpaid Principal Balance 32,557   32,557   27,228
Related Allowance 3,499   3,499   761
Average Recorded Investment Impaired Loans 31,500 $ 23,840 29,486 $ 21,253  
Interest Recognized on Impaired Loans 301 48 346 74  
Secured Loans [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment of Loans Collectively Measured for Contingency Provision 2,580,972   2,580,972   2,442,772
Recorded Investment of Loans Individually Measured for Specific Impairment 23,392   23,392   8,818
Recorded Investment 10,275   10,275   2,414
Unpaid Principal Balance 10,275   10,275   2,484
Related Allowance 3,425   3,425   664
Average Recorded Investment Impaired Loans 15,590 12,859 13,332 10,414  
Interest Recognized on Impaired Loans 50 20 69 33  
Unsecured Loans [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment of Loans Collectively Measured for Contingency Provision 95,419   95,419   94,737
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
One-to-Four Family Residential [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment of Loans Collectively Measured for Contingency Provision 170,271   170,271   167,403
Recorded Investment of Loans Individually Measured for Specific Impairment 783   783   529
Recorded Investment 320   320   435
Unpaid Principal Balance 574   574   693
Related Allowance 4   4   12
Average Recorded Investment Impaired Loans 648 676 608 879  
Interest Recognized on Impaired Loans 21 (3) 22 3  
Commercial Land [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment of Loans Collectively Measured for Contingency Provision 280,721   280,721   270,106
Recorded Investment of Loans Individually Measured for Specific Impairment 2,799   2,799   708
Recorded Investment 0   0   0
Unpaid Principal Balance 0   0   0
Related Allowance 0   0   0
Average Recorded Investment Impaired Loans 2,549 354 1,936 236  
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 1,352,109   1,352,109   1,365,321
Recorded Investment of Loans Individually Measured for Specific Impairment 3,658   3,658   4,425
Recorded Investment 525   525   540
Unpaid Principal Balance 530   530   544
Related Allowance 25   25   27
Average Recorded Investment Impaired Loans 3,676 1,749 3,925 1,868  
Interest Recognized on Impaired Loans 7 10 6 14  
Owner Occupied [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment of Loans Collectively Measured for Contingency Provision 1,127,370   1,127,370   1,054,564
Recorded Investment of Loans Individually Measured for Specific Impairment 3,397   3,397   5,414
Recorded Investment 0   0   0
Unpaid Principal Balance 0   0   0
Related Allowance 0   0   0
Average Recorded Investment Impaired Loans 3,453 5,102 4,107 5,420  
Interest Recognized on Impaired Loans 192 0 192 0  
Land And Acquisition [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment of Loans Collectively Measured for Contingency Provision 6,049   6,049   11,542
Recorded Investment of Loans Individually Measured for Specific Impairment 0   0   14
Recorded Investment 0   0   14
Unpaid Principal Balance 0   0   102
Related Allowance 0   0   1
Average Recorded Investment Impaired Loans 0 206 5 293  
Interest Recognized on Impaired Loans 0 1 0 3  
Residential Construction [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment of Loans Collectively Measured for Contingency Provision 133,167   133,167   109,293
Recorded Investment of Loans Individually Measured for Specific Impairment 0   0   336
Recorded Investment 0   0   0
Unpaid Principal Balance 0   0   0
Related Allowance 0   0   0
Average Recorded Investment Impaired Loans 0 562 112 562  
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 153,529   153,529   103,779
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 39,466   39,466   103,480
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 314,476   314,476   319,307
Recorded Investment of Loans Individually Measured for Specific Impairment 5,643   5,643   5,215
Recorded Investment 4,877   4,877   4,464
Unpaid Principal Balance 4,920   4,920   4,558
Related Allowance 45   45   57
Average Recorded Investment Impaired Loans 5,584 2,332 5,461 1,581  
Interest Recognized on Impaired Loans 31 $ 20 57 $ 21  
Impaired Loans With Recorded Allowance [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment 15,997   15,997   7,867
Unpaid Principal Balance 16,299   16,299   8,381
Impaired Loans Without Recorded Allowance [Member] | Secured Loans [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment 13,117   13,117   6,404
Unpaid Principal Balance 18,238   18,238   12,831
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 463   463   94
Unpaid Principal Balance 908   908   291
Impaired Loans Without Recorded Allowance [Member] | Commercial Land [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment 2,799   2,799   708
Unpaid Principal Balance 2,787   2,787   687
Impaired Loans Without Recorded Allowance [Member] | Income Property Multifamily [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment 3,133   3,133   3,885
Unpaid Principal Balance 3,422   3,422   4,148
Impaired Loans Without Recorded Allowance [Member] | Owner Occupied [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment 3,397   3,397   5,414
Unpaid Principal Balance 6,297   6,297   8,102
Impaired Loans Without Recorded Allowance [Member] | Land And Acquisition [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment 0   0   0
Unpaid Principal Balance 0   0   0
Impaired Loans Without Recorded Allowance [Member] | Residential Construction [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Recorded Investment 0   0   336
Unpaid Principal Balance 0   0   336
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 766   766   751
Unpaid Principal Balance $ 905   $ 905   $ 833
v3.7.0.1
Loans Loans (Analysis of Troubled Debt Restructurings) (Details)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
USD ($)
Modifications
contract
Jun. 30, 2016
USD ($)
Modifications
contract
Jun. 30, 2017
USD ($)
Modifications
contract
Jun. 30, 2016
USD ($)
Modifications
contract
Dec. 31, 2016
USD ($)
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract 0 0 0 0  
Loans and Leases Receivable, Related Parties $ 10,100   $ 10,100   $ 10,100
Financing Receivable Modifications Additional Commitment To Lend $ 371   $ 371   $ 508
Loans, Excluding Purchased Credit Impaired Loans [Member]          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | Modifications 11 17 24 25  
Financing Receivable, Modifications, Pre-Modification Recorded Investment $ 2,619 $ 2,537 $ 4,521 $ 4,654  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 2,619 $ 2,537 $ 4,521 $ 4,654  
Loans, Excluding Purchased Credit Impaired Loans [Member] | Secured Loans [Member]          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | Modifications 2 2 5 5  
Financing Receivable, Modifications, Pre-Modification Recorded Investment $ 1,422 $ 293 $ 1,778 $ 1,663  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 1,422 $ 293 $ 1,778 $ 1,663  
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 1 0  
Financing Receivable, Modifications, Pre-Modification Recorded Investment $ 382 $ 0 $ 382 $ 0  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 382 $ 0 $ 382 $ 0  
Loans, Excluding Purchased Credit Impaired Loans [Member] | Owner Occupied [Member]          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | Modifications 0 1 0 2  
Financing Receivable, Modifications, Pre-Modification Recorded Investment $ 0 $ 30 $ 0 $ 280  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 0 $ 30 $ 0 $ 280  
Loans, Excluding Purchased Credit Impaired Loans [Member] | Consumer Portfolio Segment [Member]          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | Modifications 8 14 18 18  
Financing Receivable, Modifications, Pre-Modification Recorded Investment $ 815 $ 2,214 $ 2,361 $ 2,711  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 815 $ 2,214 $ 2,361 $ 2,711  
v3.7.0.1
Loans Loans (Analysis of Purchased Credit Impaired Loans - Accretable Yield Rollforward) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Mar. 31, 2017
Dec. 31, 2016
Mar. 31, 2016
Dec. 31, 2015
Loans, Analysis of Purchased Credit Impaired Loans, Accretable Yield Rollforward [Abstract]                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield $ 35,706 $ 52,909 $ 35,706 $ 52,909 $ 38,444 $ 45,191 $ 56,607 $ 58,981
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion 2,882 3,774 7,064 8,003        
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Disposals of Loans 0 (149) 158 (1,910)        
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference $ 144 $ (73) $ (2,263) $ 21        
v3.7.0.1
Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Narrative) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Provision for loan and lease losses $ 3,177 $ 3,640 $ 5,952 $ 8,894
v3.7.0.1
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 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance $ 71,021 $ 69,264 $ 70,043 $ 68,172
Charged-offs (6,018) (6,234) (9,833) (13,139)
Recoveries 4,804 2,634 6,822 5,377
Provision for loan and lease losses 3,177 3,640 5,952 8,894
Ending balance 72,984 69,304 72,984 69,304
Specific Reserve 3,499 2,705 3,499 2,705
General Allocation 69,485 66,599 69,485 66,599
Secured Loans [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 35,672 32,114 36,050 32,321
Charged-offs (3,600) (2,900) (4,709) (6,670)
Recoveries 2,903 728 3,200 1,339
Provision for loan and lease losses 4,564 1,866 4,998 4,818
Ending balance 39,539 31,808 39,539 31,808
Specific Reserve 3,425 2,486 3,425 2,486
General Allocation 36,114 29,322 36,114 29,322
Unsecured Loans [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 1,188 1,300 960 1,299
Charged-offs 0 (41) (18) (44)
Recoveries 41 25 109 76
Provision for loan and lease losses (82) (19) 96 (66)
Ending balance 1,147 1,265 1,147 1,265
Specific Reserve 0 0 0 0
General Allocation 1,147 1,265 1,147 1,265
One-to-Four Family Residential [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 645 654 599 916
Charged-offs (153) (35) (460) (35)
Recoveries 223 20 340 61
Provision for loan and lease losses (87) 35 149 (268)
Ending balance 628 674 628 674
Specific Reserve 4 1 4 1
General Allocation 624 673 624 673
Commercial Land [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 2,288 1,262 1,797 1,178
Charged-offs 0 (26) 0 (26)
Recoveries 0 2 0 2
Provision for loan and lease losses 68 184 559 268
Ending balance 2,356 1,422 2,356 1,422
Specific Reserve 0 0 0 0
General Allocation 2,356 1,422 2,356 1,422
Income Property Multifamily [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 6,803 7,402 7,342 6,616
Charged-offs 0 0 0 0
Recoveries 60 120 95 181
Provision for loan and lease losses (9) 524 (583) 1,249
Ending balance 6,854 8,046 6,854 8,046
Specific Reserve 25 100 25 100
General Allocation 6,829 7,946 6,829 7,946
Owner Occupied [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 6,534 6,086 6,439 5,550
Charged-offs 0 0 0 0
Recoveries 67 8 110 16
Provision for loan and lease losses (89) 242 (37) 770
Ending balance 6,512 6,336 6,512 6,336
Specific Reserve 0 0 0 0
General Allocation 6,512 6,336 6,512 6,336
Land And Acquisition [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 509 640 316 339
Charged-offs 0 0 (14) 0
Recoveries 27 2 47 53
Provision for loan and lease losses (175) (55) 12 195
Ending balance 361 587 361 587
Specific Reserve 0 0 0 0
General Allocation 361 587 361 587
Residential Construction [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 1,109 1,449 669 733
Charged-offs 0 0 0 0
Recoveries 31 3 40 206
Provision for loan and lease losses 237 (76) 668 437
Ending balance 1,377 1,376 1,377 1,376
Specific Reserve 0 0 0 0
General Allocation 1,377 1,376 1,377 1,376
Income Property Multifamily Construction [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 782 715 404 388
Charged-offs 0 0 0 0
Recoveries 0 1 0 2
Provision for loan and lease losses 203 188 581 514
Ending balance 985 904 985 904
Specific Reserve 0 0 0 0
General Allocation 985 904 985 904
Owner Occupied Construction [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 1,768 1,210 1,192 1,006
Charged-offs 0 0 0 0
Recoveries 0 0 0 0
Provision for loan and lease losses (386) 174 190 378
Ending balance 1,382 1,384 1,382 1,384
Specific Reserve 0 0 0 0
General Allocation 1,382 1,384 1,382 1,384
Consumer Portfolio Segment [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 3,360 3,368 3,534 3,531
Charged-offs (465) (334) (893) (600)
Recoveries 248 201 533 366
Provision for loan and lease losses 408 325 377 263
Ending balance 3,551 3,560 3,551 3,560
Specific Reserve 45 118 45 118
General Allocation 3,506 3,442 3,506 3,442
Purchased Credit Impaired Loans [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 9,395 13,064 10,515 13,726
Charged-offs (1,800) (2,898) (3,739) (5,764)
Recoveries 1,204 1,524 2,348 3,075
Provision for loan and lease losses (738) 91 (1,063) 744
Ending balance 8,061 11,781 8,061 11,781
Specific Reserve 0 0 0 0
General Allocation 8,061 11,781 8,061 11,781
Unallocated Financing Receivables [Member]        
Allowance for Loan and Lease Losses [Roll Forward]        
Beginning balance 968 0 226 569
Charged-offs 0 0 0 0
Recoveries 0 0 0 0
Provision for loan and lease losses (737) 161 5 (408)
Ending balance 231 161 231 161
Specific Reserve 0 0 0 0
General Allocation $ 231 $ 161 $ 231 $ 161
v3.7.0.1
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 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Allowance For Loan And Lease Losses And Unfunded Loan Commitments And Letters Of Credit        
Beginning balance $ 3,555 $ 2,930 $ 2,705 $ 2,930
Allowance for Loan and Lease Losses, Net Changes In Unfunded Commitments and Letters Of Credit Allowance 0 (150) 850 (150)
Ending balance $ 3,555 $ 2,780 $ 3,555 $ 2,780
v3.7.0.1
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
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Less: allowance for loan and lease losses $ 72,984 $ 71,021 $ 70,043 $ 69,304 $ 69,264 $ 68,172
Loans, net 6,350,090   6,143,380      
Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 6,293,221   6,067,763      
Less: allowance for loan and lease losses 64,923   59,528      
Loans, net 6,228,298   6,008,235      
Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 139,302   157,251      
Acquisition Accounting Valuation Discount on Purchased Credit Impaired Loans 9,449   11,591      
Less: allowance for loan and lease losses 8,061   10,515      
Loans, net 121,792   135,145      
Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 6,025,968   5,820,954      
Pass [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 135,923   150,523      
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 98,162   94,867      
Special Mention [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 87   92      
Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 169,091   151,942      
Substandard [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 3,292   6,636      
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 39,539 35,672 36,050 31,808 32,114 32,321
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 2,604,364   2,451,590      
Secured Loans [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 15,836   20,870      
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 2,423,195   2,289,307      
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 14,930   18,824      
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 74,148   65,846      
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 87   92      
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 107,021   96,437      
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 819   1,954      
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 1,147 1,188 960 1,265 1,300 1,299
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 95,419   94,737      
Unsecured Loans [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 772   736      
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 93,716   93,721      
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 703   736      
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 701   800      
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 1,002   216      
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 69   0      
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 628 645 599 674 654 916
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 171,054   167,932      
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 17,242   20,643      
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 168,062   164,797      
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 16,379   19,293      
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 1,204   395      
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 1,788   2,740      
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 863   1,350      
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 2,356 2,288 1,797 1,422 1,262 1,178
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 283,520   270,814      
Commercial Land [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 10,411   7,546      
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 274,000   263,195      
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 10,411   7,333      
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 4,761   3,228      
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 4,759   4,391      
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 0   213      
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 6,854 6,803 7,342 8,046 7,402 6,616
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 1,355,767   1,369,746      
Income Property Multifamily [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 26,185   32,720      
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 1,328,708   1,341,978      
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 26,047   31,042      
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 8,678   17,902      
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 18,381   9,866      
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 138   1,678      
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 6,512 6,534 6,439 6,336 6,086 5,550
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 1,130,767   1,059,978      
Owner Occupied [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 51,802   54,529      
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 1,098,775   1,027,019      
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 50,999   53,623      
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 8,269   6,608      
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   0      
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 23,723   26,351      
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 803   906      
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 361 509 316 587 640 339
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 6,049   11,556      
Land And Acquisition [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 453   832      
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 6,022   11,541      
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 382   744      
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 27   15      
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 71   88      
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 1,377 1,109 669 1,376 1,449 733
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 133,167   109,629      
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 132,555   108,941      
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 399   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 213   688      
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] | 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]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Less: allowance for loan and lease losses 985 782 404 904 715 388
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 153,529   103,779      
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 786   1,217      
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 153,529   103,779      
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 786   1,217      
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 1,382 1,768 1,192 1,384 1,210 1,006
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 39,466   103,480      
Owner Occupied Construction [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 288   509      
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 35,416   98,948      
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 288   509      
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   88      
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 4,050   4,444      
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 3,551 $ 3,360 3,534 $ 3,560 $ 3,368 $ 3,531
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 320,119   324,522      
Consumer Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Loans and Leases Receivable, Gross, Carrying Amount 15,527   17,649      
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 311,990   317,728      
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 14,998   17,202      
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 2   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 8,127   6,794      
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 529   447      
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      
v3.7.0.1
Other Real Estate Owned (Summary of Other Real Estate Owned) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Other Real Estate Owned [Line Items]        
Balance, beginning of period $ 4,519 $ 12,427 $ 5,998 $ 13,738
Transfers in 0 206 0 311
Valuation adjustments (33) (139) (226) (276)
Proceeds from Sale of OREO Property 444 1,950 1,719 3,276
Gain on sale of OREO, net 16 69 5 116
Total OREO, end of period 4,058 $ 10,613 4,058 $ 10,613
Mortgage Loans in Process of Foreclosure, Amount 537   537  
One-to-Four Family Residential [Member]        
Other Real Estate Owned [Line Items]        
Total OREO, end of period $ 0   $ 0  
v3.7.0.1
Covered Assets and FDIC Loss-sharing Asset (Narrative) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Mar. 31, 2017
Covered Assets And FDIC Loss Sharing Asset [Line Items]          
Payment to FDIC to terminate loss-sharing agreements $ 4,700   $ (4,666) $ 0  
FDIC indemnification asset settlement 3,123 $ 0 3,123 0  
FDIC clawback liability removal upon termination of loss-sharing agreements 5,400        
FDIC loss-sharing agreement early termination, pretax charge $ 2,400   $ 2,409 $ 0  
Non-Single Family Covered Assets         $ 74,000
Single Family Covered Assets         $ 26,400
v3.7.0.1
Covered Assets and FDIC Loss-sharing Asset (FDIC Loss-sharing Asset) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Mar. 31, 2017
Covered Assets And FDIC Loss Sharing Asset [Line Items]          
Balance at beginning of period $ 3,239 $ 5,954 $ 3,535 $ 6,568  
Cash paid to (received from) the FDIC, net 0 (396) 184 (43)  
FDIC reimbursable losses, net 57 (302) (149) (166)  
FDIC indemnification asset settlement (3,123) 0 (3,123) 0  
Amortization, net (99) (883) (414) (2,215)  
Loan impairment (recapture) 0 (20) 40 127  
Sale of other real estate 11 (24) 18 120  
Valuation adjustments of other real estate owned 0 (40) 0 (22)  
Other 85 23 91 103  
Balance at end of period $ 0 $ 4,266 $ 0 $ 4,266  
Non-Single Family Covered Assets         $ 74,000
Single Family Covered Assets         $ 26,400
v3.7.0.1
Goodwill and Intangible Assets (Schedule of Goodwill and Intangible Assets) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Mar. 31, 2017
Dec. 31, 2016
Mar. 31, 2016
Dec. 31, 2015
Goodwill and Intangible Assets [Roll Forward]                
Total goodwill, beginning of period     $ 382,762          
Total goodwill, end of period $ 382,762 $ 382,762 382,762 $ 382,762        
CDI current period amortization (1,249) (1,483) (2,598) (3,066)        
Indefinite-Lived Intangible Assets (Excluding Goodwill) 919 919 919 919        
Other intangible assets, net 15,033 20,511 15,033 20,511   $ 17,631    
Total goodwill and intangible assets, end of period 397,795 403,273 $ 397,795 403,273        
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         $ (43,235) $ (41,886) $ (37,523) $ (35,940)
Core deposit intangible, net, beginning of period 15,363 21,075 $ 16,712 22,658        
CDI current period amortization (1,249) (1,483) (2,598) (3,066)        
Total core deposit intangible, end of period $ 14,114 $ 19,592 $ 14,114 $ 19,592        
v3.7.0.1
Goodwill and Intangible Assets (Estimated Future Amortization Expense of Core Deposit Intangibles) (Details)
$ in Thousands
Jun. 30, 2017
USD ($)
Future Amortization Expense For Core Deposit Intangibles  
2016 $ 2,315
2017 3,855
2018 2,951
2019 2,048
2020 $ 1,440
v3.7.0.1
Derivatives and Balance Sheet Offsetting (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Derivative [Line Items]          
Gain (Loss) on Derivative Instruments, Net, Pretax $ 2 $ 1 $ 6 $ (7)  
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement 65,895   65,895    
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 65,895   65,895    
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 40,895   40,895    
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 346,700   346,700   $ 309,300
Not Designated as Hedging Instrument [Member] | Other Assets [Member] | Interest Rate Contracts [Member]          
Derivative [Line Items]          
Fair value of asset derivative instruments 9,077   9,077   9,012
Not Designated as Hedging Instrument [Member] | Other Liabilities [Member] | Interest Rate Contracts [Member]          
Derivative [Line Items]          
Fair value of liability derivative instruments $ 9,096   $ 9,096   $ 9,036
v3.7.0.1
Derivatives and Balance Sheet Offsetting Balance Sheet Offsetting (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Balance Sheet Offsetting [Line Items]    
Repurchase agreements, amounts offset in balance sheet $ 0 $ 0
Repurchase agreements, net amount presented in statement of financial position 65,895 80,822
Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Securities (65,895) (80,822)
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 9,077 9,012
Derivative, Collateral, Obligation to Return Securities 0 0
Derivative Asset, Fair Value, Amount Not Offset Against Collateral 9,077 9,012
Derivative Liability, Gross Amounts Offset in Balance Sheets 0 0
Derivative Liability 9,096 9,036
Derivative, Collateral, Right to Reclaim Securities (9,096) (9,036)
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 65,895 80,822
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member] | Other Assets [Member]    
Balance Sheet Offsetting [Line Items]    
Fair value of asset derivative instruments 9,077 9,012
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member] | Other Liabilities [Member]    
Balance Sheet Offsetting [Line Items]    
Fair value of liability derivative instruments $ 9,096 $ 9,036
v3.7.0.1
Commitments and Contingent Liabilities (Details) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2017
Dec. 31, 2016
Aug. 24, 2016
Other Commitments [Line Items]      
Sale Leaseback Transaction, Monthly Rental Payments $ 12    
Sale Leaseback Transaction, Deferred Gain, Gross     $ 742
Sale Leaseback Transaction, Deferred Gain, Net 679    
Commitments to Extend Credit [Member]      
Other Commitments [Line Items]      
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability 2,180,000 $ 2,170,000  
Standby Letters of Credit [Member]      
Other Commitments [Line Items]      
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability 49,600 49,700  
Commercial Letter of Credit and other off-balance sheet liabilities [Member]      
Other Commitments [Line Items]      
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability $ 3,000 $ 3,400  
v3.7.0.1
Shareholders' Equity (Details) - $ / shares
Jul. 27, 2017
Apr. 27, 2017
Jan. 26, 2017
Subsequent Event [Line Items]      
Declared quarterly cash dividend   $ 0.22 $ 0.22
Subsequent Event [Member]      
Subsequent Event [Line Items]      
Declared quarterly cash dividend $ 0.22    
v3.7.0.1
Accumulated Other Comprehensive Income (Changes in AOCI by Component) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Beginning balance [1] $ (12,606) $ 12,343 $ (18,999) $ (6,295)
Other comprehensive income before reclassifications [1] 6,033 8,508 12,339 27,278
Amounts reclassified from accumulated other comprehensive income [1] 45 (40) 132 (172)
Net current-period other comprehensive income [1] 6,078 8,468 12,471 27,106
Ending balance [1] (6,528) 20,811 (6,528) 20,811
Unrealized Gains and Losses on Available-for-Sale Securities [Member]        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Beginning balance [1] (11,002) 18,918 (12,704) 386
Other comprehensive income before reclassifications [1] 6,033 8,508 7,735 27,278
Amounts reclassified from accumulated other comprehensive income [1] 0 (146) 0 (384)
Net current-period other comprehensive income [1] 6,033 8,362 7,735 26,894
Ending balance [1] (4,969) 27,280 (4,969) 27,280
Unrealized Gains and Losses on Pension Plan Liability [Member]        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Beginning balance [1] (1,604) (6,575) (6,295) (6,681)
Other comprehensive income before reclassifications [1] 0 0 4,604 0
Amounts reclassified from accumulated other comprehensive income [1] 45 106 132 212
Net current-period other comprehensive income [1] 45 106 4,736 212
Ending balance [1] $ (1,559) $ (6,469) $ (1,559) $ (6,469)
[1] All amounts are net of tax. Amounts in parenthesis indicate debits.
v3.7.0.1
Accumulated Other Comprehensive Income (Reclassification out of AOCI) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Investment securities gains, net     $ 0 $ 602
Compensation and employee benefits $ 38,393 $ 37,291 79,218 73,610
Total before tax 38,252 36,650 78,025 67,138
Income tax provision (11,120) (11,245) (21,694) (20,474)
Net income 27,132 25,405 56,331 46,664
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 0 229 0 602
Total before tax 0 229 0 602
Income tax provision 0 (83) 0 (218)
Net income 0 146 0 384
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 (71) (167) (207) (334)
Total before tax (71) (167) (207) (334)
Income tax provision 26 61 75 122
Net income $ (45) $ (106) $ (132) $ (212)
v3.7.0.1
Fair Value Accounting and Measurement (Financial Assets And Liabilities Accounted for Fair Value On Recurring Basis) (Details) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2017
Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities available for sale $ 2,264,636 $ 2,278,577
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 $ 2,264,636 2,278,577
Other assets (Interest rate contracts) 9,077 9,012
Other liabilities (Interest rate contracts) 9,096 9,036
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 250 800
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 2,264,386 2,277,777
Other assets (Interest rate contracts) 9,077 9,012
Other liabilities (Interest rate contracts) 9,096 9,036
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 1,423,958 1,465,732
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 1,423,958 1,465,732
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 483,093 475,060
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 483,093 475,060
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 352,238 331,902
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 352,238 331,902
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 250 800
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 250 800
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 5,097 5,083
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 5,097 5,083
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
v3.7.0.1
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 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Impaired loans $ 7,019 $ 3,218 $ 7,019 $ 3,218
Fair Value, Option, Changes in Fair Value, Gain (Loss) 3,702 2,829 3,702 2,924
OREO 105 6,338 105 6,338
Assets, Fair Value Disclosure 7,124 9,556 7,124 9,556
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 7,019 3,218 7,019 3,218
OREO 105 6,338 105 6,338
Assets, Fair Value Disclosure 7,124 9,556 7,124 9,556
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) 3,669 2,691 3,669 2,691
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) $ 33 $ 138 $ 33 $ 233
v3.7.0.1
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
Jun. 30, 2017
Jun. 30, 2016
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Impaired loans $ 7,019 $ 3,218
OREO 105 6,338
Fair Value, Inputs, Level 3 [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Impaired loans 7,019 3,218
OREO 105 6,338
Collateral Pledged [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Impaired loans $ 7,019 303
Collateral Pledged [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 0.00%  
Collateral Pledged [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 75.00%  
Collateral Pledged [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 60.59%  
Uncollateralized [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Impaired loans   $ 2,915
Uncollateralized [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, Discount Rate   2.99%
Uncollateralized [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, Discount Rate   10.25%
Uncollateralized [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, Discount Rate   6.03%
v3.7.0.1
Fair Value Accounting and Measurement (Carrying Amounts and Estimated Fair Values of Selected Financial Instruments) (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Assets    
Interest-earning deposits with banks $ 14,425 $ 31,200
Securities available for sale 2,264,636 2,278,577
Carrying (Reported) Amount, Fair Value Disclosure [Member]    
Assets    
Cash and due from banks 197,623 193,038
Interest-earning deposits with banks 14,425 31,200
Securities available for sale 2,264,636 2,278,577
FHLB stock 16,360 10,240
Loans held for sale 6,918 5,846
Loans 6,350,090 6,143,380
FDIC loss-sharing asset   3,535
Interest rate contracts 9,077 9,012
Liabilities    
Deposits 8,072,464 8,059,415
FHLB Advances 159,474 6,493
Repurchase agreements 65,895 80,822
Interest rate contracts 9,096 9,036
Estimate of Fair Value, Fair Value Disclosure [Member]    
Assets    
Cash and due from banks 197,623 193,038
Interest-earning deposits with banks 14,425 31,200
Securities available for sale 2,264,636 2,278,577
FHLB stock 16,360 10,240
Loans held for sale 6,918 5,846
Loans 6,233,490 6,040,439
FDIC loss-sharing asset   867
Interest rate contracts 9,077 9,012
Liabilities    
Deposits 8,067,980 8,055,168
FHLB Advances 160,397 7,070
Repurchase agreements 66,102 81,131
Interest rate contracts 9,096 9,036
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]    
Assets    
Cash and due from banks 197,623 193,038
Interest-earning deposits with banks 14,425 31,200
Securities available for sale 250 800
FHLB stock 0 0
Loans held for sale 0 0
Loans 0 0
FDIC loss-sharing asset   0
Interest rate contracts 0 0
Liabilities    
Deposits 7,687,671 7,653,122
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 2,264,386 2,277,777
FHLB stock 16,360 10,240
Loans held for sale 6,918 5,846
Loans 0 0
FDIC loss-sharing asset   0
Interest rate contracts 9,077 9,012
Liabilities    
Deposits 380,309 402,046
FHLB Advances 160,397 7,070
Repurchase agreements 66,102 81,131
Interest rate contracts 9,096 9,036
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 6,233,490 6,040,439
FDIC loss-sharing asset   867
Interest rate contracts 0 0
Liabilities    
Deposits 0 0
FHLB Advances 0 0
Repurchase agreements 0 0
Interest rate contracts $ 0 $ 0
v3.7.0.1
Earnings per Common Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]        
Net Income $ 27,132 $ 25,405 $ 56,331 $ 46,664
Earnings allocated to participating securities - preferred shares 0 45 3 82
Earnings allocated to participating securities - nonvested restricted shares 362 343 759 578
Earnings allocated to common shareholders, Basic $ 26,770 $ 25,017 $ 55,569 $ 46,004
Weighted average common shares outstanding 57,520 57,185 57,437 57,149
Basic earnings per common share $ 0.47 $ 0.44 $ 0.97 $ 0.80
Earnings allocated to common shareholders, Diluted $ 26,770 $ 25,017 $ 55,569 $ 46,004
Dilutive effect of equity awards and warrants 5 10 5 11
Weighted average diluted common shares outstanding 57,525 57,195 57,442 57,160
Diluted earnings per common share $ 0.47 $ 0.44 $ 0.97 $ 0.80
Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive. 12 19 13 23
v3.7.0.1
Subsequent event (Details) - Subsequent Event [Member] - USD ($)
 3 Months Ended
Sep. 30, 2017
Jul. 01, 2017
Subsequent Event [Line Items]    
Disposal Group, Including Discontinued Operation, Assets   $ 0
Disposal Group, Including Discontinued Operation, Assets   $ 0
Subsequent event, Merchant services sale, one time gain $ 14,000,000