Columbia Banking System (COLB) 10-Q 9 Nov 16 2016 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2016	Oct. 31, 2016
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q3
Entity Registrant Name	COLUMBIA BANKING SYSTEM INC
Entity Central Index Key	887,343
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		58,042,207

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) shares in Thousands, $ in Thousands		Sep. 30, 2016	Dec. 31, 2015
ASSETS
Cash and due from banks		$ 180,839	$ 166,929
Interest-earning deposits with banks		11,225	8,373
Total cash and cash equivalents		192,064	175,302
Securities available for sale at fair value (amortized cost of $2,324,721 and $2,157,610, respectively)		2,360,084	2,157,694
Federal Home Loan Bank stock at cost		12,640	12,722
Loans held for sale		3,361	4,509
Loans, net of unearned income of ($36,236) and ($42,373), respectively		6,259,757	5,815,027
Less: allowance for loan and lease losses		70,264	68,172
Loans, net		6,189,493	5,746,855
FDIC loss-sharing asset		3,592	6,568
Interest receivable		31,606	27,877
Premises and equipment, net		152,908	164,239
Other real estate owned		8,994	13,738
Goodwill		382,762	382,762
Other intangible assets, net		19,051	23,577
Other assets		230,199	235,854
Total assets		9,586,754	8,951,697
LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest-bearing		3,942,434	3,507,358
Interest-bearing		4,115,382	3,931,471
Total deposits		8,057,816	7,438,829
Federal Home Loan Bank advances		66,502	68,531
Securities sold under agreements to repurchase		69,189	99,699
Other liabilities		116,512	102,510
Total liabilities		8,310,019	7,709,569
Commitments and contingent liabilities (Note 10)
Shareholders' equity:
Preferred Stock, Shares Authorized		2,000	2,000
Preferred Stock, Shares Issued		9	9
Preferred Stock, Value, Issued		$ 2,217	$ 2,217
Authorized shares		115,000	115,000
Common Stock Shares Issued And Outstanding		58,043	57,724
Common Stock (no par value)		$ 994,098	$ 990,281
Retained earnings		263,915	255,925
Accumulated other comprehensive income (loss)	[1]	16,505	(6,295)
Total shareholders’ equity		1,276,735	1,242,128
Total liabilities and shareholders’ equity		$ 9,586,754	$ 8,951,697
[1]	All amounts are net of tax. Amounts in parenthesis indicate debits.

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Securities available-for-sale, amortized cost	$ 2,324,721	$ 2,157,610
Less: unearned income on loans	$ (36,236)	$ (42,373)
Common stock, par value	$ 0	$ 0
Authorized shares	115,000	115,000
Common stock, shares outstanding	58,043	57,724

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015		Sep. 30, 2016	Sep. 30, 2015
Interest Income
Loans	$ 74,956	$ 72,242		$ 216,923	$ 214,808
Taxable securities	8,988	7,472		25,834	22,258
Tax-exempt securities	2,799	2,920		8,397	8,972
Deposits in banks	15	31		81	84
Total interest income	86,758	82,665		251,235	246,122
Interest Expense
Deposits	823	756		2,352	2,244
Federal Home Loan Bank advances	229	78		594	391
Other borrowings	134	137		407	419
Total interest expense	1,186	971		3,353	3,054
Net Interest Income	85,572	81,694		247,882	243,068
Provision for loan and lease losses	1,866	2,831		10,760	6,242
Net interest income after provision for loan and lease losses	83,706	78,863		237,122	236,826
Noninterest Income
Deposit account and treasury management fees (1)	7,222	7,230	[1]	21,304	21,441	[1]
Card revenue (1)	6,114	5,849	[1]	17,817	16,914	[1]
Financial services and trust revenue (1)	2,746	3,316	[1]	8,347	9,657	[1]
Loan revenue (1)	2,949	3,200	[1]	8,013	8,125	[1]
Merchant processing revenue	2,352	2,422		6,726	6,802
Bank owned life insurance	1,073	1,086		3,459	3,370
Investment securities gains, net	572	236		1,174	1,300
Change in FDIC loss-sharing asset	(104)	(1,635)		(2,197)	(2,979)
Other (1)	242	795	[1]	1,109	2,098	[1]
Total noninterest income	23,166	22,499		65,752	66,728
Noninterest Expense
Compensation and employee benefits	38,476	35,175		112,086	112,721
Occupancy	8,219	8,101		26,044	24,781
Merchant processing expense	1,161	1,090		3,312	3,146
Advertising and promotion	1,993	1,354		3,878	3,480
Data processing	4,275	3,796		12,350	13,022
Legal and professional fees	2,264	2,173		5,366	7,527
Taxes, licenses and fees	1,491	1,344		4,079	4,003
Regulatory premiums	776	1,084		2,985	3,626
Net cost (benefit) of operation of other real estate owned	(249)	240		(61)	(1,569)
Amortization of intangibles	1,460	1,695		4,526	5,230
Other	7,398	8,015		21,563	23,305
Total noninterest expense	67,264	64,067		196,128	199,272
Income before income taxes	39,608	37,295		106,746	104,282
Income tax provision	12,124	11,515		32,598	32,195
Net Income	$ 27,484	$ 25,780		$ 74,148	$ 72,087
Earnings per common share
Basic ($ per share)	$ 0.47	$ 0.45		$ 1.28	$ 1.25
Diluted ($ per share)	0.47	0.45		1.28	1.25
Dividends paid per common share	$ 0.39	$ 0.34		$ 1.14	$ 0.98
Weighted average number of common shares outstanding	57,215	57,051		57,173	57,007
Weighted average number of diluted common shares outstanding	57,225	57,064		57,183	57,021
[1]	Reclassified to conform to the current period’s presentation. Reclassifications consisted of disaggregating fee revenue previously presented in ‘Service charges and other fees’ and certain revenue previously presented in ‘Other’ into the presentation above. The Company made these reclassifications to provide additional information about its sources of noninterest income. There was no change to total noninterest income as previously reported as a result of these reclassifications.

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Net income		$ 27,484	$ 25,780	$ 74,148	$ 72,087
Unrealized gain from securities:
Net unrealized holding loss from available for sale securities arising during the period		(4,049)	10,126	23,229	8,161
Reclassification adjustment of net gain from sale of available for sale securities included in income		(364)	(151)	(748)	(829)
Net unrealized gain from securities, net of reclassification adjustment		(4,413)	9,975	22,481	7,332
Pension plan liability adjustment:
Unrecognized net actuarial gain (loss) during the period				0	(280)
Less: amortization of unrecognized net actuarial loss included in net periodic pension cost		107	62	319	153
Pension plan liability adjustment, net		107	62	319	(127)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	[1]	(4,306)	10,037	22,800	7,205
Total comprehensive income		$ 23,178	$ 35,817	$ 96,948	$ 79,292
[1]	All amounts are net of tax. Amounts in parenthesis indicate debits.

Consolidated Statements of Com6

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Net unrealized holding gain (loss) from available for sale securities arising during the period, tax	$ 2,305	$ (5,765)	$ (13,225)	$ (4,647)
Reclassification adjustment of net gain from sale of available for sale securities included in income, tax	208	85	426	471
Net unrealized loss from unfunded defined benefit plan liability arising during the period, tax	0	0	0	159
Less: amortization of unrecognized net actuarial loss included in net periodic pension cost, tax	$ (60)	$ (35)	$ (182)	$ (87)

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Preferred Stock [Member]
Balance, value at Dec. 31, 2014	$ 1,228,175	$ 985,839	$ 234,498	$ 5,621	$ 2,217
Balance, shares at Dec. 31, 2014		57,437,000			9,000
Net income	72,087		72,087
Other comprehensive income	7,205			7,205
Issuance of common stock - stock option and other plans, value		$ 1,194
Issuance of common stock - stock option and other plans, shares		46,000
Issuance of common stock - restricted stock awards, net of cancelled awards, value		$ 2,934
Issuance of common stock - restricted stock awards, net of cancelled awards, shares		277,000
Stock Repurchased and Retired During Period, Value		$ (879)
Stock Repurchased During Period, Shares		(31,000)
Dividends, Preferred Stock, Cash			(100)
Cash dividends paid on common stock	(56,480)		(56,480)
Balance, value at Sep. 30, 2015	1,254,136	$ 989,088	250,005	12,826	$ 2,217
Balance, shares at Sep. 30, 2015		57,729,000			9,000
Balance, value at Dec. 31, 2015	1,242,128	$ 990,281	255,925	(6,295)	$ 2,217
Balance, shares at Dec. 31, 2015		57,724,000			9,000
Net income	74,148		74,148
Other comprehensive income	22,800			22,800
Issuance of common stock - stock option and other plans, value	1,304	$ 1,304
Issuance of common stock - stock option and other plans, shares		47,000
Issuance of common stock - restricted stock awards, net of cancelled awards, value	3,626	$ 3,626
Issuance of common stock - restricted stock awards, net of cancelled awards, shares		310,000
Stock Repurchased and Retired During Period, Value	(1,113)	$ (1,113)
Stock Repurchased During Period, Shares		(38,000)
Dividends, Preferred Stock, Cash	(117)		117
Cash dividends paid on common stock	(66,041)		(66,041)
Balance, value at Sep. 30, 2016	$ 1,276,735	$ 994,098	$ 263,915	$ 16,505	$ 2,217
Balance, shares at Sep. 30, 2016		58,043,000			8,782

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash Flows From Operating Activities
Net income	$ 74,148	$ 72,087
Adjustments to reconcile net income to net cash provided by operating activities
Provision for loan and lease losses	10,760	6,242
Stock-based compensation expense	3,626	2,934
Depreciation, amortization and accretion	27,796	21,892
Investment securities gain, net	1,174	1,300
Net realized (gain) loss on sale of other assets	186	(241)
Net gain on sale and valuation adjustments of OREO	(101)	1,798	[1]
Payments for Origination and Purchases of Loans Held-for-sale	76,645	57,249	[1]
Proceeds from Sale of Loans Held-for-sale	77,793	51,728	[1]
Net change in:
Interest receivable	(3,729)	(2,684)
Interest payable	(84)	(136)
Other assets	(7,714)	(1,618)
Other liabilities	13,416	11,012
Net cash provided by operating activities	118,480	100,869
Cash Flows From Investing Activities
Loans originated and acquired, net of principal collected	(450,914)	(314,768)
Purchases of securities available for sale	(502,602)	(218,734)
Purchases of premises and equipment	(2,705)	(7,351)
Payments to Acquire Federal Home Loan Bank Stock	(57,799)	(7,360)
Proceeds from FDIC for reimbursement on loss-sharing asset	878	4,195
Proceeds from sales of securities available for sale	120,800	82,776
Proceeds from principal repayments and maturities of securities available for sale	199,677	204,322
Proceeds from Sales of Assets, Investing Activities	7,391	14,132	[1]
Proceeds from Sale of Federal Home Loan Bank Stock	57,881	30,483	[1]
Proceeds from sales of other real estate and other personal property owned	5,845	13,254
Payments to FDIC related to loss-sharing asset	(855)	(1,472)
Net cash used in investing activities	(622,403)	(200,523)
Cash Flows From Financing Activities
Net increase in deposits	619,162	390,083
Net decrease in sweep repurchase agreements	(30,510)	(31,898)
Proceeds from Federal Home Loan Bank advances	1,347,000	1,467,000
Federal Reserve Bank borrowings	10	1,010
Proceeds from exercise of stock options	1,304	1,194
Repayment of Federal Home Loan Bank advances	(1,349,000)	(1,677,000)
Repayment of Federal Reserve Bank borrowings	10	1,010
Payment of common stock dividends	(66,041)	(56,480)
Preferred stock dividends	(117)	(100)
Repayment of other borrowings	0	8,248
Purchase and retirement of common stock	1,113	879
Net cash provided by financing activities	520,685	83,672
Increase (decrease) in cash and cash equivalents	16,762	(15,982)
Cash and cash equivalents at beginning of period	175,302	188,170
Cash and cash equivalents at end of period	192,064	172,188
Supplemental Information:
Cash paid for interest	3,437	3,190
Cash paid for income tax	20,825	19,054
Non-cash investing and financing activities
Loans transferred to other real estate owned	$ 1,202	$ 8,751
[1]	Reclassified to conform to the current period’s presentation. There were no changes to cash flows from operating, investing, or financing activities as a result of these reclassifications.

Basis of Presentation and Signi

Basis of Presentation and Significant Accounting Policies	9 Months Ended
	Sep. 30, 2016
Basis of Presentation And Significant Accounting Policies
Basis of Presentation and Significant Accounting Policies	Basis of Presentation and Significant Accounting Policies Basis of Presentation The interim unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information and with instructions to Form 10-Q and Article 10 of Regulation S-X. The consolidated financial statements include the accounts of Columbia Banking System, Inc. (“we”, “our”, “Columbia” or the “Company”) and its subsidiaries, including its wholly owned banking subsidiary Columbia State Bank (“Columbia Bank” or the “Bank”) and Columbia Trust Company (“Columbia Trust”). All intercompany transactions and accounts have been eliminated in consolidation. In the opinion of management, all adjustments (consisting only of normal recurring adjustments) considered necessary for a fair statement of the results for the interim periods presented have been included. The results of operations for the nine months ended September 30, 2016 are not necessarily indicative of results to be anticipated for the year ending December 31, 2016 . The accompanying interim unaudited consolidated financial statements should be read in conjunction with the financial statements and related notes contained in the Company’s 2015 Annual Report on Form 10-K. Because of reclassifications, changes occurred in the manner in which certain comparative period noninterest income items were presented in the unaudited consolidated statements of income. Specifically, fee revenue previously presented as ‘Service charges and other fees’ and certain fee revenue previously presented as ‘Other’ were reclassified to conform to the current period presentation. The Company made these presentation changes to provide additional information about its sources of noninterest income. There was no change to total noninterest income as previously reported as a result of these reclassifications. Significant Accounting Policies The significant accounting policies used in preparation of our consolidated financial statements are disclosed in our 2015 Annual Report on Form 10-K. There have not been any changes in our significant accounting policies compared to those contained in our 2015 Form 10-K disclosure for the year ended December 31, 2015 .

Accounting Pronouncements Recen

Accounting Pronouncements Recently Issued	9 Months Ended
	Sep. 30, 2016
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Accounting Pronouncements Recently Issued	Accounting Pronouncements Recently Issued In August 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-15, Classification of Certain Cash Receipts and Cash Payments . The amendments in this ASU provide specific guidance on several statement of cash flow classification issues to reduce diversity in practice. The amendments in ASU 2016-15 are effective for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years. Early adoption is permitted. The Company is assessing the impact that this guidance will have on its consolidated financial statements. In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments . The amendments included in this ASU require an entity to reflect its current estimate of all expected credit losses for assets held at an amortized cost basis. For available for sale debt securities, credit losses should be measured in a manner similar to current GAAP, however, this ASU will require that credit losses be presented as an allowance rather than as a write-down. The amendments in ASU 2016-13 are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years, and are required to be adopted through a modified retrospective approach, with a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the ASU is effective. The Company is assessing the impact that this guidance will have on its consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting . The amendments included in this ASU simplify several aspects of the accounting for employee share-based payment transactions including the accounting for income taxes, forfeitures, and statutory tax withholding requirements, as well as classification in the statement of cash flows. The amendments in ASU 2016-09 are effective for the first interim or annual period beginning after December 15, 2016. Early adoption is permitted. The Company is assessing the impact that this guidance will have on its consolidated financial statements but does not expect the impact to be material. In February 2016, the FASB issued ASU 2016-02, Leases . The amendments included in this ASU create a new accounting model for both lessees and lessors. The new guidance requires lessees to recognize lease liabilities and corresponding right-of-use assets for all leases with lease terms greater than 12 months. The amendments in ASU 2016-02 must be adopted using the modified retrospective approach and will be effective for the first interim or annual period beginning after December 15, 2018. Early adoption is permitted. The Company is assessing the impact that this guidance will have on its consolidated financial statements. In January 2016, the FASB issued ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities . The amendments in ASU 2016-01 require all equity investments to be measured at fair value with changes in the fair value recognized through net income. The amendments in ASU 2016-01 also require an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. In addition, the amendments in this update eliminate the requirement to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet for public business entities. The amendments in ASU 2016-01 are effective for the first interim or annual period beginning after December 15, 2017. The Company is assessing the impact that this guidance will have on its consolidated financial statements but does not expect the impact to be material. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers . The guidance in this update will replace most existing revenue recognition guidance in GAAP when it becomes effective. For public companies, this update was to be effective for interim and annual periods beginning after December 15, 2016. However, in August 2015, the FASB issued ASU 2015-14, which delayed the effective date of ASU 2014-09 by one year and permits companies to voluntarily adopt the new standard as of the original effective date. In March, April and May 2016, the FASB issued ASU 2016-08, ASU 2016-10 and ASU 2016-12, respectively, to provide implementation guidance and practical expedients related to ASU 2014-09. The Company is assessing the impact that this guidance will have on its consolidated financial statements but does not expect the impact to be material.

Securities

Securities	9 Months Ended
	Sep. 30, 2016
Available-for-sale Securities [Abstract]
Securities	Securities The following table summarizes the amortized cost, gross unrealized gains and losses and the resulting fair value of securities available for sale: Amortized Gross Gross Fair Value (in thousands) September 30, 2016 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations $ 1,498,158 $ 17,148 $ (2,382 ) $ 1,512,924 State and municipal securities 487,308 16,192 (382 ) 503,118 U.S. government agency and government-sponsored enterprise securities 333,423 5,009 (140 ) 338,292 U.S. government securities 548 — — 548 Other securities 5,284 64 (146 ) 5,202 Total $ 2,324,721 $ 38,413 $ (3,050 ) $ 2,360,084 December 31, 2015 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations $ 1,296,955 $ 4,525 $ (14,991 ) $ 1,286,489 State and municipal securities 480,417 12,690 (938 ) 492,169 U.S. government agency and government-sponsored enterprise securities 354,515 1,113 (1,846 ) 353,782 U.S. government securities 20,439 — (302 ) 20,137 Other securities 5,284 24 (191 ) 5,117 Total $ 2,157,610 $ 18,352 $ (18,268 ) $ 2,157,694 Proceeds from sales of securities available for sale were $37.4 million and $10.6 million for the three months ended September 30, 2016 and 2015 , respectively, and were $120.8 million and $82.8 million for the nine months ended September 30, 2016 and September 30, 2015 , respectively. The following table provides the gross realized gains and losses on the sales of securities for the periods indicated: Three Months Ended Nine Months Ended September 30, September 30, 2016 2015 2016 2015 (in thousands) Gross realized gains $ 572 $ 236 $ 1,174 $ 1,310 Gross realized losses — — — (10 ) Net realized gains $ 572 $ 236 $ 1,174 $ 1,300 The scheduled contractual maturities of investment securities available for sale at September 30, 2016 are presented as follows: September 30, 2016 Amortized Cost Fair Value (in thousands) Due within one year $ 28,765 $ 28,874 Due after one year through five years 484,206 493,479 Due after five years through ten years 688,715 703,388 Due after ten years 1,117,751 1,129,141 Other securities with no stated maturity 5,284 5,202 Total investment securities available-for-sale $ 2,324,721 $ 2,360,084 The following table summarizes the carrying value of securities pledged as collateral to secure public deposits, borrowings and other purposes as permitted or required by law: September 30, 2016 (in thousands) Washington and Oregon State to secure public deposits $ 235,931 Federal Reserve Bank to secure borrowings 40,877 Other securities pledged 147,336 Total securities pledged as collateral $ 424,144 The following table shows the gross unrealized losses and fair value of the Company’s investments with unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at September 30, 2016 and December 31, 2015 : Less than 12 Months 12 Months or More Total Fair Unrealized Fair Unrealized Fair Unrealized (in thousands) September 30, 2016 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations $ 176,508 $ (548 ) $ 163,859 $ (1,834 ) $ 340,367 $ (2,382 ) State and municipal securities 35,915 (337 ) 3,489 (45 ) 39,404 (382 ) U.S. government agency and government-sponsored enterprise securities 22,115 (140 ) — — 22,115 (140 ) Other securities — — 2,810 (146 ) 2,810 (146 ) Total $ 234,538 $ (1,025 ) $ 170,158 $ (2,025 ) $ 404,696 $ (3,050 ) December 31, 2015 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations $ 664,509 $ (7,610 ) $ 214,325 $ (7,381 ) $ 878,834 $ (14,991 ) State and municipal securities 48,261 (358 ) 31,383 (580 ) 79,644 (938 ) U.S. government agency and government-sponsored enterprise securities 193,400 (1,128 ) 40,034 (718 ) 233,434 (1,846 ) U.S. government securities 10,343 (136 ) 9,794 (166 ) 20,137 (302 ) Other securities 2,300 (15 ) 2,780 (176 ) 5,080 (191 ) Total $ 918,813 $ (9,247 ) $ 298,316 $ (9,021 ) $ 1,217,129 $ (18,268 ) At September 30, 2016 , there were 83 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations securities in an unrealized loss position, of which 46 were in a continuous loss position for 12 months or more. The decline in fair value is attributable to changes in interest rates relative to where these investments fall within the yield curve and their individual characteristics. Because the Company does not intend to sell these securities nor does the Company consider it more likely than not that it will be required to sell these securities before the recovery of amortized cost basis, which may be upon maturity, the Company does not consider these investments to be other-than-temporarily impaired at September 30, 2016 . At September 30, 2016 , there were 35 state and municipal government securities in an unrealized loss position, of which five were in a continuous loss position for 12 months or more. The unrealized losses on state and municipal securities were caused by interest rate changes or widening of market spreads subsequent to the purchase of the individual securities. Management monitors published credit ratings of these securities for adverse changes. As of September 30, 2016 , none of the rated obligations of state and local government entities held by the Company had a below investment grade credit rating. Because the credit quality of these securities are investment grade and the Company does not intend to sell these securities nor does the Company consider it more likely than not that it will be required to sell these securities before the recovery of amortized cost basis, which may be upon maturity, the Company does not consider these investments to be other-than-temporarily impaired at September 30, 2016 . At September 30, 2016 , there were five U.S. government agency and government-sponsored enterprise securities in an unrealized loss position, of which none was in a continuous loss position for 12 months or more. The decline in fair value is attributable to changes in interest rates relative to where these investments fall within the yield curve and their individual characteristics. Because the Company does not currently intend to sell these securities nor does the Company consider it more likely than not that it will be required to sell these securities before the recovery of amortized cost basis, which may be upon maturity, the Company does not consider these investments to be other-than-temporarily impaired at September 30, 2016 . At September 30, 2016 , there was one other security in an unrealized loss position, which was in a continuous unrealized loss position for 12 months or more. The decline in fair value is attributable to changes in interest rates and the additional risk premium investors are demanding for investment securities with these characteristics. The Company does not consider this investment to be other-than-temporarily impaired at September 30, 2016 as it has the intent and ability to hold the investment for sufficient time to allow for recovery in the market value.

Loans

Loans	9 Months Ended
	Sep. 30, 2016
Loans Receivable, Net [Abstract]
Loans	Loans The Company’s loan portfolio includes originated and purchased loans. Originated loans and purchased loans for which there was no evidence of credit deterioration at their acquisition date and it was probable that we would be able to collect all contractually required payments are referred to collectively as loans, excluding purchased credit impaired loans. Purchased loans for which there was, at acquisition date, evidence of credit deterioration since their origination and it was probable that we would be unable to collect all contractually required payments are referred to as purchased credit impaired loans, or “PCI loans.” The following is an analysis of the loan portfolio by segment (net of unearned income): September 30, 2016 December 31, 2015 Loans, excluding PCI loans PCI Loans Total Loans, excluding PCI loans PCI Loans Total (in thousands) Commercial business $ 2,630,017 $ 22,558 $ 2,652,575 $ 2,362,575 $ 34,848 $ 2,397,423 Real estate: One-to-four family residential 168,511 19,378 187,889 176,295 23,938 200,233 Commercial and multifamily residential 2,686,783 92,617 2,779,400 2,491,736 99,389 2,591,125 Total real estate 2,855,294 111,995 2,967,289 2,668,031 123,327 2,791,358 Real estate construction: One-to-four family residential 130,163 867 131,030 135,874 2,278 138,152 Commercial and multifamily residential 202,014 1,583 203,597 167,413 1,630 169,043 Total real estate construction 332,177 2,450 334,627 303,287 3,908 307,195 Consumer 325,741 15,761 341,502 342,601 18,823 361,424 Less: Net unearned income (36,236 ) — (36,236 ) (42,373 ) — (42,373 ) Total loans, net of unearned income 6,106,993 152,764 6,259,757 5,634,121 180,906 5,815,027 Less: Allowance for loan and lease losses (58,762 ) (11,502 ) (70,264 ) (54,446 ) (13,726 ) (68,172 ) Total loans, net $ 6,048,231 $ 141,262 $ 6,189,493 $ 5,579,675 $ 167,180 $ 5,746,855 Loans held for sale $ 3,361 $ — $ 3,361 $ 4,509 $ — $ 4,509 At September 30, 2016 and December 31, 2015 , the Company had no material foreign activities. Substantially all of the Company’s loans and unfunded commitments are geographically concentrated in its service areas within the states of Washington, Oregon and Idaho. The Company has made loans to executive officers and directors of the Company and related interests. These loans are made on the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with unrelated persons and do not involve more than the normal risk of collectability. The aggregate dollar amount of these loans was $10.1 million at September 30, 2016 and $10.0 million at December 31, 2015 . During the first nine months of 2016 , there were $759 thousand in advances and $652 thousand in repayments. At September 30, 2016 and December 31, 2015 , $2.30 billion and $2.22 billion of commercial and residential real estate loans were pledged as collateral on Federal Home Loan Bank of Des Moines (“FHLB”) borrowings and additional borrowing capacity. The Company has also pledged $50.0 million and $50.1 million of commercial loans to the Federal Reserve Bank for additional borrowing capacity at September 30, 2016 and December 31, 2015 , respectively. The following is an analysis of nonaccrual loans as of September 30, 2016 and December 31, 2015 : September 30, 2016 December 31, 2015 Recorded Unpaid Principal Recorded Unpaid Principal (in thousands) Commercial business: Secured $ 9,466 $ 19,689 $ 9,395 $ 15,688 Unsecured 36 216 42 256 Real estate: One-to-four family residential 579 1,303 820 1,866 Commercial & multifamily residential: Commercial land 934 922 349 332 Income property 1,957 2,177 2,843 3,124 Owner occupied 4,161 6,842 6,321 8,943 Real estate construction: One-to-four family residential: Land and acquisition — — 362 385 Residential construction 461 461 566 679 Consumer 3,772 4,042 766 990 Total $ 21,366 $ 35,652 $ 21,464 $ 32,263 Loans, excluding purchased credit impaired loans The following is an aging of the recorded investment of the loan portfolio as of September 30, 2016 and December 31, 2015 : Current 30 - 59 60 - 89 Greater Total Nonaccrual Total Loans September 30, 2016 (in thousands) Commercial business: Secured $ 2,515,042 $ 2,542 $ 609 $ — $ 3,151 $ 9,466 $ 2,527,659 Unsecured 97,496 5 — — 5 36 97,537 Real estate: One-to-four family residential 164,927 400 34 — 434 579 165,940 Commercial & multifamily residential: Commercial land 238,887 — 200 — 200 934 240,021 Income property 1,376,735 90 — — 90 1,957 1,378,782 Owner occupied 1,043,376 58 — — 58 4,161 1,047,595 Real estate construction: One-to-four family residential: Land and acquisition 11,933 119 — — 119 — 12,052 Residential construction 116,327 213 305 — 518 461 117,306 Commercial & multifamily residential: Income property 89,373 — — — — — 89,373 Owner occupied 110,853 — — — — — 110,853 Consumer 314,581 649 873 — 1,522 3,772 319,875 Total $ 6,079,530 $ 4,076 $ 2,021 $ — $ 6,097 $ 21,366 $ 6,106,993 Current 30 - 59 60 - 89 Greater Total Nonaccrual Total Loans December 31, 2015 (in thousands) Commercial business: Secured $ 2,241,069 $ 11,611 $ 617 $ — $ 12,228 $ 9,395 $ 2,262,692 Unsecured 94,867 39 — — 39 42 94,948 Real estate: One-to-four family residential 170,913 1,637 66 — 1,703 820 173,436 Commercial & multifamily residential: Commercial land 212,740 69 — — 69 349 213,158 Income property 1,305,502 1,750 684 — 2,434 2,843 1,310,779 Owner occupied 939,396 599 — — 599 6,321 946,316 Real estate construction: One-to-four family residential: Land and acquisition 14,388 — — — — 362 14,750 Residential construction 119,809 — — — — 566 120,375 Commercial & multifamily residential: Income property 83,634 — — — — — 83,634 Owner occupied 81,671 — — — — — 81,671 Consumer 328,219 2,597 780 — 3,377 766 332,362 Total $ 5,592,208 $ 18,302 $ 2,147 $ — $ 20,449 $ 21,464 $ 5,634,121 The following is an analysis of impaired loans as of September 30, 2016 and December 31, 2015 : Recorded Investment Recorded Investment Impaired Loans With Impaired Loans Without Recorded Unpaid Related Recorded Unpaid September 30, 2016 (in thousands) Commercial business: Secured $ 2,520,876 $ 6,783 $ 1,208 $ 1,277 $ 873 $ 5,575 $ 11,840 Unsecured 97,537 — — — — — — Real estate: One-to-four family residential 165,394 546 358 591 353 188 402 Commercial & multifamily residential: Commercial land 239,313 708 — — — 708 687 Income property 1,376,349 2,433 546 551 28 1,887 2,124 Owner occupied 1,043,849 3,746 — — — 3,746 6,340 Real estate construction: One-to-four family residential: Land and acquisition 11,950 102 — — — 102 102 Residential construction 116,970 336 — — — 336 336 Commercial & multifamily residential: Income property 89,373 — — — — — — Owner occupied 110,853 — — — — — — Consumer 316,281 3,594 2,976 3,010 46 618 700 Total $ 6,088,745 $ 18,248 $ 5,088 $ 5,429 $ 1,300 $ 13,160 $ 22,531 Recorded Investment Recorded Investment Impaired Loans With Impaired Loans Without Recorded Unpaid Related Recorded Unpaid December 31, 2015 (in thousands) Commercial business: Secured $ 2,257,168 $ 5,524 $ 690 $ 718 $ 321 $ 4,834 $ 6,455 Unsecured 94,948 — — — — — — Real estate: One-to-four family residential 172,150 1,286 314 339 314 972 1,397 Commercial & multifamily residential: Commercial land 213,158 — — — — — — Income property 1,308,673 2,106 — — — 2,106 2,311 Owner occupied 940,261 6,055 — — — 6,055 8,528 Real estate construction: One-to-four family residential: Land and acquisition 14,283 467 — — — 467 490 Residential construction 119,813 562 335 335 3 227 227 Commercial & multifamily residential: Income property 83,634 — — — — — — Owner occupied 81,671 — — — — — — Consumer 332,282 80 15 15 15 65 139 Total $ 5,618,041 $ 16,080 $ 1,354 $ 1,407 $ 653 $ 14,726 $ 19,547 The following table provides additional information on impaired loans for the three and nine month periods indicated: Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Average Recorded Interest Recognized Average Recorded Interest Recognized Average Recorded Interest Recognized Average Recorded Interest Recognized (in thousands) Commercial business: Secured $ 6,909 $ 15 $ 6,507 $ 3 $ 9,506 $ 48 $ 8,602 $ 10 Unsecured — — — — — — 1 — Real estate: One-to-four family residential 617 5 3,315 11 796 8 3,238 35 Commercial & multifamily residential: Commercial land 708 — — — 354 — 118 — Income property 1,939 8 2,061 10 2,010 19 3,114 27 Owner occupied 4,486 — 6,665 65 5,001 — 7,302 533 Real estate construction: One-to-four family residential: Land and acquisition 103 1 825 1 245 4 685 4 Residential construction 449 — 893 — 506 — 670 — Consumer 3,345 25 27 1 2,084 46 216 3 Total $ 18,556 $ 54 $ 20,293 $ 91 $ 20,502 $ 125 $ 23,946 $ 612 The following is an analysis of loans classified as troubled debt restructurings (“TDR”) during the three and nine months ended September 30, 2016 and 2015 : Three months ended September 30, 2016 Three months ended September 30, 2015 Number of TDR Modifications Pre-Modification Post-Modification Number of TDR Modifications Pre-Modification Post-Modification (dollars in thousands) Commercial business: Secured 2 $ 90 $ 90 4 $ 2,903 $ 2,903 Real estate: One-to-four family residential 1 85 85 — — — Consumer 10 731 731 — — — Total 13 $ 906 $ 906 4 $ 2,903 $ 2,903 Nine months ended September 30, 2016 Nine months ended September 30, 2015 Number of TDR Modifications Pre-Modification Post-Modification Number of TDR Modifications Pre-Modification Post-Modification (dollars in thousands) Commercial business: Secured 7 $ 1,753 $ 1,753 4 $ 2,903 $ 2,903 Real estate: One-to-four family residential 2 115 115 1 30 30 Commercial and multifamily residential: Owner occupied 1 250 250 — — — Consumer 28 3,442 3,442 — — — Total 38 $ 5,560 $ 5,560 5 $ 2,933 $ 2,933 The Company’s loans classified as TDR are loans that have been modified or the borrower has been granted special concessions due to financial difficulties that, if not for the challenges of the borrower, the Company would not otherwise consider. The TDR modifications or concessions are made to increase the likelihood that these borrowers with financial difficulties will be able to satisfy their debt obligations as amended. The concessions granted in the restructurings summarized in the table above largely consisted of maturity extensions, interest rate modifications or a combination of both. In limited circumstances, a reduction in the principal balance of the loan could also be made as a concession. Credit losses for loans classified as TDR are measured on the same basis as impaired loans. For impaired loans, an allowance is established when the collateral value less selling costs (or discounted cash flows or observable market price) of the impaired loan is lower than the recorded investment of that loan. The Company had commitments to lend $51 thousand of additional funds on loans classified as TDR as of September 30, 2016 . The Company had no such commitments at December 31, 2015 . The Company did not have any loans modified as TDR that defaulted within twelve months of being modified as TDR during the three and nine month periods ended September 30, 2016 and 2015 . Purchased Credit Impaired Loans Purchased credit impaired (“PCI”) loans are accounted for under ASC 310-30 and initially measured at fair value based on expected future cash flows over the life of the loans. Loans that have common risk characteristics are aggregated into pools. The Company remeasures contractual and expected cash flows, at the pool-level, on a quarterly basis. Contractual cash flows are calculated based upon the loan pool terms after applying a prepayment factor. Calculation of the applied prepayment factor for contractual cash flows is the same as described below for expected cash flows. Inputs to the determination of expected cash flows include cumulative default and prepayment data as well as loss severity and recovery lag information. Cumulative default and prepayment data are calculated via a transition matrix, which utilizes probability values of a loan pool transitioning into a particular delinquency state (e.g. 0-30 days past due, 31 to 60 days, etc.) given its delinquency state at the remeasurement date. Loss severity factors are based upon either actual charge-off data within the loan pools or industry averages, and recovery lags are based upon the collateral within the loan pools. The excess of cash flows expected to be collected over the initial fair value of purchased credit impaired loans is referred to as the accretable yield and is accreted into interest income over the estimated life of the acquired loans using the effective yield method. Other adjustments to the accretable yield include changes in the estimated remaining life of the acquired loans, changes in expected cash flows and changes of indices for acquired loans with variable interest rates. The following is an analysis of our PCI loans, net of related allowance for losses and remaining valuation discounts as of September 30, 2016 and December 31, 2015 : September 30, 2016 December 31, 2015 (in thousands) Commercial business $ 24,436 $ 38,784 Real estate: One-to-four family residential 22,227 27,195 Commercial and multifamily residential 98,178 106,308 Total real estate 120,405 133,503 Real estate construction: One-to-four family residential 867 2,326 Commercial and multifamily residential 1,754 1,834 Total real estate construction 2,621 4,160 Consumer 17,632 20,903 Subtotal of PCI loans 165,094 197,350 Less: Valuation discount resulting from acquisition accounting 12,330 16,444 Allowance for loan losses 11,502 13,726 PCI loans, net of allowance for loan losses $ 141,262 $ 167,180 The following table shows the changes in accretable yield for PCI loans for the three and nine months ended September 30, 2016 and 2015 : Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 (in thousands) Balance at beginning of period $ 52,909 $ 67,283 $ 58,981 $ 73,849 Accretion (4,902 ) (5,049 ) (12,905 ) (17,105 ) Disposals (178 ) 256 (157 ) (1,796 ) Reclassifications from nonaccretable difference 1,034 350 2,944 7,892 Balance at end of period $ 48,863 $ 62,840 $ 48,863 $ 62,840

Allowance for Loan and Lease Lo

Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit	9 Months Ended
	Sep. 30, 2016
Allowance For Loan And Lease Losses And Unfunded Loan Commitments And Letters Of Credit
Allowance For Loan And Lease Losses And Unfunded Loan Commitments And Letters Of Credit Text Block	Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit We record an allowance for loan and lease losses (the “allowance”) to recognize management’s estimate of credit losses incurred in the loan portfolio at each balance sheet date. Management’s allowance estimate is measured quarterly and the primary components include allowances related to: 1. Loans collectively evaluated for impairment under the Contingencies topic of the FASB ASC. 2. Loans individually determined to be impaired in accordance with the Receivables topic of the FASB ASC. 3. Purchased credit impaired loans accounted for under the Receivables topic of the FASB ASC. The allowance for loans collectively evaluated for impairment is measured using quantitative information adjusted by qualitative factors. Quantitative information includes credit loss experience over a historical base period and a loss emergence period estimated by loan product category such as commercial business, commercial real estate, etc. Historical loss experience by loan class incorporates the loan’s risk rating migration from origination to the point of loss. Loan risk ratings are assigned based upon an assessment of the borrower’s ability to service the debt. In the event a borrower experiences financial deterioration such that the primary source of loan repayment is at risk, secondary sources of loan repayment, such as guarantors, are considered. As conditions likely differ between the historical base period and the balance sheet date, management qualitatively adjusts the historical loss rate to assist in ensuring our allowance estimate reflects current conditions. Such qualitative adjustments include general economic and business conditions affecting our marketplace, seasoning of the loan portfolio, duration of the business cycle, trends with respect to delinquencies and problem loans, etc. In addition, the allowance may include an unallocated amount to recognize factors inherent in our loan portfolio but not otherwise contemplated. Any unallocated amount generally comprises less than 5% of the allowance. For loans individually determined to be impaired, the Company measures impairment on a loan-by-loan basis using either the discounted expected future cash flows, observable market price, or the fair value of the collateral less selling costs if the loan is collateral dependent or if foreclosure is probable. A specific reserve for such loans is recognized to the extent the measured value is less than the loan’s recorded investment. Purchased credit impaired loans that have common risk characteristics are aggregated into loan pools. When required, we record impairment, at the pool-level, to adjust the pool’s carrying value to its net present value of expected future cash flows. Quarterly, we re-measure expected loan pool cash flows. If, due to credit deterioration, the present value of expected cash flows is less than carrying value, we reduce the loan pool’s carrying value by adjusting the allowance with an impairment charge to earnings which is recorded as provision for loan losses. If credit quality improves and the present value of expected cash flows exceeds carrying value, we increase the loan pool’s carrying value by recapturing previously recorded allowance, if any. See Note 4, Loans, for further discussion of the accounting for PCI loans. Credit losses attributable to draws on purchased credit impaired loans, advanced subsequent to the loan purchase date, are accounted for under the Contingencies topic of the FASB ASC as described above. We have used the same methodology for allowance calculations during the nine months ended September 30, 2016 and 2015 . The Company carefully monitors the loan portfolio and continues to emphasize the importance of credit quality. We recognize loan charge-offs when management determines that all or a portion of a loan balance is uncollectable and the uncollectable amount can be reasonably estimated. The following tables show a detailed analysis of the allowance for the three and nine months ended September 30, 2016 and 2015 : Beginning Charge-offs Recoveries Provision (Recovery) Ending Specific General Three months ended September 30, 2016 (in thousands) Commercial business: Secured $ 31,808 $ (2,128 ) $ 787 $ 2,008 $ 32,475 $ 873 $ 31,602 Unsecured 1,265 (31 ) 67 (128 ) 1,173 — 1,173 Real estate: One-to-four family residential 675 — 81 221 977 353 624 Commercial & multifamily residential: Commercial land 1,422 — — 92 1,514 — 1,514 Income property 8,046 — 10 149 8,205 28 8,177 Owner occupied 6,336 — 10 487 6,833 — 6,833 Real estate construction: One-to-four family residential: Land and acquisition 587 — 2 (134 ) 455 — 455 Residential construction 1,376 — 19 (393 ) 1,002 — 1,002 Commercial & multifamily residential: Income property 904 — 107 (480 ) 531 — 531 Owner occupied 1,384 — — 57 1,441 — 1,441 Consumer 3,559 (383 ) 399 168 3,743 46 3,697 Purchased credit impaired 11,781 (2,062 ) 2,216 (433 ) 11,502 — 11,502 Unallocated 161 — — 252 413 — 413 Total $ 69,304 $ (4,604 ) $ 3,698 $ 1,866 $ 70,264 $ 1,300 $ 68,964 Beginning Charge-offs Recoveries Provision (Recovery) Ending Specific General Nine months ended September 30, 2016 (in thousands) Commercial business: Secured $ 32,321 $ (8,798 ) $ 2,126 $ 6,826 $ 32,475 $ 873 $ 31,602 Unsecured 1,299 (75 ) 143 (194 ) 1,173 — 1,173 Real estate: One-to-four family residential 916 (35 ) 142 (46 ) 977 353 624 Commercial & multifamily residential: Commercial land 1,178 (26 ) 2 360 1,514 — 1,514 Income property 6,616 — 191 1,398 8,205 28 8,177 Owner occupied 5,550 — 26 1,257 6,833 — 6,833 Real estate construction: One-to-four family residential: Land and acquisition 339 — 55 61 455 — 455 Residential construction 733 — 225 44 1,002 — 1,002 Commercial & multifamily residential: Income property 388 — 109 34 531 — 531 Owner occupied 1,006 — — 435 1,441 — 1,441 Consumer 3,531 (983 ) 765 430 3,743 46 3,697 Purchased credit impaired 13,726 (7,826 ) 5,291 311 11,502 — 11,502 Unallocated 569 — — (156 ) 413 — 413 Total $ 68,172 $ (17,743 ) $ 9,075 $ 10,760 $ 70,264 $ 1,300 $ 68,964 Beginning Charge-offs Recoveries Provision (Recovery) Ending Specific General Three months ended September 30, 2015 (in thousands) Commercial business: Secured $ 27,708 $ (2,439 ) $ 530 $ 5,189 $ 30,988 $ 1,020 $ 29,968 Unsecured 857 (131 ) 93 471 1,290 — 1,290 Real estate: One-to-four family residential 1,355 — 261 (420 ) 1,196 84 1,112 Commercial & multifamily residential: Commercial land 1,581 — 130 123 1,834 — 1,834 Income property 8,197 (83 ) 273 22 8,409 — 8,409 Owner occupied 5,801 (115 ) 14 473 6,173 17 6,156 Real estate construction: One-to-four family residential: Land and acquisition 497 — 98 (206 ) 389 64 325 Residential construction 958 — 7 (250 ) 715 — 715 Commercial & multifamily residential: Income property 407 — 2 (68 ) 341 — 341 Owner occupied 441 — — (31 ) 410 — 410 Consumer 3,182 (311 ) 297 49 3,217 14 3,203 Purchased credit impaired 16,174 (3,198 ) 1,533 (519 ) 13,990 — 13,990 Unallocated 2,099 — — (2,002 ) 97 — 97 Total $ 69,257 $ (6,277 ) $ 3,238 $ 2,831 $ 69,049 $ 1,199 $ 67,850 Beginning Charge-offs Recoveries Provision (Recovery) Ending Specific General Nine months ended September 30, 2015 (in thousands) Commercial business: Secured $ 25,923 $ (5,847 ) $ 1,242 $ 9,670 $ 30,988 $ 1,020 $ 29,968 Unsecured 927 (235 ) 208 390 1,290 — 1,290 Real estate: One-to-four family residential 2,281 (297 ) 288 (1,076 ) 1,196 84 1,112 Commercial & multifamily residential: Commercial land 799 — 130 905 1,834 — 1,834 Income property 9,159 (126 ) 3,532 (4,156 ) 8,409 — 8,409 Owner occupied 5,007 (115 ) 36 1,245 6,173 17 6,156 Real estate construction: One-to-four family residential: Land and acquisition 1,197 — 101 (909 ) 389 64 325 Residential construction 1,860 — 40 (1,185 ) 715 — 715 Commercial & multifamily residential: Income property 622 — 7 (288 ) 341 — 341 Owner occupied 434 — — (24 ) 410 — 410 Consumer 3,180 (1,521 ) 707 851 3,217 14 3,203 Purchased credit impaired 16,336 (10,174 ) 5,262 2,566 13,990 — 13,990 Unallocated 1,844 — — (1,747 ) 97 — 97 Total $ 69,569 $ (18,315 ) $ 11,553 $ 6,242 $ 69,049 $ 1,199 $ 67,850 Changes in the allowance for unfunded commitments and letters of credit, a component of “Other liabilities” in the consolidated balance sheet, are summarized as follows: Three Months Ended Nine Months Ended September 30, September 30, 2016 2015 2016 2015 (in thousands) Balance at beginning of period $ 2,780 $ 2,930 $ 2,930 $ 2,655 Net changes in the allowance for unfunded commitments and letters of credit 125 — (25 ) 275 Balance at end of period $ 2,905 $ 2,930 $ 2,905 $ 2,930 Risk Elements The extension of credit in the form of loans or other credit products to individuals and businesses is one of our principal business activities. Our policies and applicable laws and regulations require risk analysis as well as ongoing portfolio and credit management. We manage our credit risk through lending limit constraints, credit review, approval policies and extensive, ongoing internal monitoring. We also manage credit risk through diversification of the loan portfolio by type of loan, type of industry and type of borrower and by limiting the aggregation of debt to a single borrower. Risk ratings are reviewed and updated whenever appropriate, with more periodic reviews as the risk and dollar value of loss on the loan increases. In the event full collection of principal and interest is not reasonably assured, the loan is appropriately downgraded and, if warranted, placed on nonaccrual status even though the loan may be current as to principal and interest payments. Additionally, we assess whether an impairment of a loan warrants specific reserves or a write-down of the loan. Pass rated loans are generally considered to have sufficient sources of repayment in order to repay the loan in full in accordance with all terms and conditions. Special Mention rated loans have potential weaknesses that, if left uncorrected, may result in deterioration of the repayment prospects for the asset or in the Company’s credit position at some future date. Loans with a risk rating of Substandard or worse are reported as classified loans in our allowance analysis. We review these loans to assess the ability of our borrowers to service all interest and principal obligations and, as a result, the risk rating may be adjusted accordingly. Loans risk rated as Substandard reflect loans where a loss is possible if loan weaknesses are not corrected. Doubtful rated loans have a high probability of loss, however, the amount of loss has not yet been determined. Loss rated loans are considered uncollectable and when identified, are charged off. The following is an analysis of the credit quality of our loan portfolio, excluding PCI loans, as of September 30, 2016 and December 31, 2015 : Pass Special Mention Substandard Doubtful Loss Total September 30, 2016 (in thousands) Loans, excluding PCI loans: Commercial business: Secured $ 2,417,653 $ 48,462 $ 61,544 $ — $ — $ 2,527,659 Unsecured 96,402 800 335 — — 97,537 Real estate: One-to-four family residential 164,102 458 1,380 — — 165,940 Commercial and multifamily residential: Commercial land 233,795 5,276 950 — — 240,021 Income property 1,354,651 17,048 7,083 — — 1,378,782 Owner occupied 1,027,356 5,745 14,494 — — 1,047,595 Real estate construction: One-to-four family residential: Land and acquisition 12,052 — — — — 12,052 Residential construction 116,187 — 1,119 — — 117,306 Commercial and multifamily residential: Income property 89,373 — — — — 89,373 Owner occupied 106,310 — 4,543 — — 110,853 Consumer 312,602 — 7,273 — — 319,875 Total $ 5,930,483 $ 77,789 $ 98,721 $ — $ — 6,106,993 Less: Allowance for loan and lease losses 58,762 Loans, excluding PCI loans, net $ 6,048,231 Pass Special Mention Substandard Doubtful Loss Total December 31, 2015 (in thousands) Loans, excluding PCI loans: Commercial business: Secured $ 2,146,729 $ 59,746 $ 56,217 $ — $ — $ 2,262,692 Unsecured 93,347 278 1,323 — — 94,948 Real estate: One-to-four family residential 171,945 52 1,439 — — 173,436 Commercial and multifamily residential: Commercial land 207,768 4,966 424 — — 213,158 Income property 1,296,043 5,889 8,847 — — 1,310,779 Owner occupied 918,986 9,668 17,662 — — 946,316 Real estate construction: One-to-four family residential: Land and acquisition 14,388 — 362 — — 14,750 Residential construction 119,243 — 1,132 — — 120,375 Commercial and multifamily residential: Income property 83,634 — — — — 83,634 Owner occupied 81,270 — 401 — — 81,671 Consumer 328,286 — 4,076 — — 332,362 Total $ 5,461,639 $ 80,599 $ 91,883 $ — $ — 5,634,121 Less: Allowance for loan and lease losses 54,446 Loans, excluding PCI loans, net $ 5,579,675 The following is an analysis of the credit quality of our PCI loan portfolio as of September 30, 2016 and December 31, 2015 : Pass Special Mention Substandard Doubtful Loss Total September 30, 2016 (in thousands) PCI loans: Commercial business: Secured $ 21,420 $ 94 $ 2,191 $ — $ — $ 23,705 Unsecured 731 — — — — 731 Real estate: One-to-four family residential 20,996 — 1,231 — — 22,227 Commercial and multifamily residential: Commercial land 7,745 — 392 — — 8,137 Income property 31,481 — 2,445 — — 33,926 Owner occupied 54,471 — 1,644 — — 56,115 Real estate construction: One-to-four family residential: Land and acquisition 767 — 100 — — 867 Residential construction — — — — — — Commercial and multifamily residential: Income property 1,239 — — — — 1,239 Owner occupied 515 — — — — 515 Consumer 17,168 — 464 — — 17,632 Total $ 156,533 $ 94 $ 8,467 $ — $ — 165,094 Less: Valuation discount resulting from acquisition accounting 12,330 Allowance for loan losses 11,502 PCI loans, net $ 141,262 Pass Special Mention Substandard Doubtful Loss Total December 31, 2015 (in thousands) PCI loans: Commercial business: Secured $ 31,468 $ 101 $ 5,995 $ — $ — $ 37,564 Unsecured 1,218 — 2 — — 1,220 Real estate: One-to-four family residential 25,018 — 2,177 — — 27,195 Commercial and multifamily residential: Commercial land 8,234 — 664 — — 8,898 Income property 36,426 — 5,916 — — 42,342 Owner occupied 53,071 261 1,736 — — 55,068 Real estate construction: One-to-four family residential: Land and acquisition 1,086 — 479 — — 1,565 Residential construction 427 — 334 — — 761 Commercial and multifamily residential: Income property 1,303 — — — — 1,303 Owner occupied 531 — — — — 531 Consumer 20,122 — 781 — — 20,903 Total $ 178,904 $ 362 $ 18,084 $ — $ — 197,350 Less: Valuation discount resulting from acquisition accounting 16,444 Allowance for loan losses 13,726 PCI loans, net $ 167,180

Other Real Estate Owned

Other Real Estate Owned	9 Months Ended
	Sep. 30, 2016
Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]
Other Real Estate Owned	Other Real Estate Owned (“OREO”) The following tables set forth activity in OREO for the three and nine months ended September 30, 2016 and 2015 : Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 (in thousands) Balance, beginning of period $ 10,613 $ 20,617 $ 13,738 $ 22,190 Transfers in 891 915 1,202 8,751 Valuation adjustments (14 ) (664 ) (290 ) (1,457 ) Proceeds from sale of OREO property (2,569 ) (1,675 ) (5,845 ) (13,283 ) Gain on sale of OREO, net 73 263 189 3,255 Balance, end of period $ 8,994 $ 19,456 $ 8,994 $ 19,456 At September 30, 2016 , the carrying amount of foreclosed residential real estate properties held as a result of obtaining physical possession was $604 thousand and the recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process was $876 thousand .

Covered Assets and FDIC Loss-sh

Covered Assets and FDIC Loss-sharing Asset	9 Months Ended
	Sep. 30, 2016
Covered Assets And FDIC Loss Sharing Asset
Covered Assets and FDIC Loss sharing Asset	FDIC Loss-sharing Asset and Covered Assets We are a party to eight loss-sharing agreements with the FDIC relating to four FDIC-assisted acquisitions. Such agreements cover a substantial portion of losses incurred on acquired covered loans and OREO. The loss-sharing agreements relate to the acquisitions of (1) Columbia River Bank in January 2010, (2) American Marine Bank in January 2010, (3) Summit Bank in May 2011, and (4) First Heritage Bank in May 2011. Under the terms of the loss-sharing agreements, the FDIC will absorb 80% of losses and share in 80% of loss recoveries up to specified amounts. With respect to loss-sharing agreements for two acquisitions completed in 2010, after those specified amounts, the FDIC will absorb 95% of losses and share in 95% of loss recoveries. The loss-sharing provisions of the agreements for non-single family and single family mortgage loans are in effect for five and ten years, respectively, and the loss recovery provisions are in effect for eight and ten years, respectively. The loss-sharing provisions for the Columbia River Bank and American Marine Bank non-single family covered assets were effective through the end of the first quarter of 2015. In addition, the loss-sharing provisions for the Summit Bank and First Heritage Bank non-single family covered assets expired at the end of the second quarter of 2016. Accordingly, further activity will be limited to recoveries through the first quarter of 2018 and second quarter of 2019, respectively, for assets covered by these loss-sharing agreements. Ten years and forty-five days after the applicable acquisition dates, the Bank must pay to the FDIC a clawback in the event the losses from the acquisitions fail to reach stated levels. The amount of the clawback is determined by a formula specified in each individual loss-sharing agreement. As of September 30, 2016 , the net present value of the Bank’s estimated clawback liability was $5.5 million , which was included in other liabilities on the consolidated balance sheets. At September 30, 2016 , the FDIC loss-sharing asset was comprised of a $3.2 million FDIC indemnification asset and a $438 thousand FDIC receivable. The indemnification asset represents the net present value of cash flows the Company expects to collect from the FDIC under the loss-sharing agreements and the FDIC receivable represents amounts from the FDIC for which the Company has requested reimbursement but has not yet received reimbursement. For PCI loans, the Company remeasures contractual and expected cash flows on a quarterly basis. When the quarterly remeasurement process results in a decrease in expected cash flows due to an increase in expected credit losses, impairment is recorded. As a result of this impairment, for loans covered by loss-sharing agreements with respect to which the loss-sharing provisions are still effective, the indemnification asset is increased to reflect anticipated future cash to be received from the FDIC. Consistent with the loss-sharing agreements between the Company and the FDIC, the amount of the increase to the indemnification asset is measured as 80% of the resulting impairment. Alternatively, when the quarterly remeasurement results in an increase in expected future cash flows due to a decrease in expected credit losses, the nonaccretable difference decreases and the effective yield of the related loan portfolio is increased. As a result of the improved expected cash flows, for loans covered by loss-sharing agreements with respect to which the loss-sharing provisions are still effective, the indemnification asset would be reduced first by the amount of any impairment previously recorded and, second, by increased amortization over the remaining life of the related loss-sharing agreement. The following table shows a detailed analysis of the FDIC loss-sharing asset for the three and nine months ended September 30, 2016 and 2015 : Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 (in thousands) Balance at beginning of period $ 4,266 $ 9,344 $ 6,568 $ 15,174 Adjustments not reflected in income: Cash (received from) paid to the FDIC, net 20 799 (23 ) (2,723 ) FDIC reimbursable recoveries, net (590 ) (362 ) (756 ) (1,326 ) Adjustments reflected in income: Amortization, net (315 ) (1,416 ) (2,530 ) (5,086 ) Loan impairment (recapture) 266 (119 ) 393 1,413 Sale of other real estate (49 ) (126 ) 71 (753 ) Valuation adjustments of other real estate owned — 25 (22 ) 1,148 Other (6 ) 1 (109 ) 299 Balance at end of period $ 3,592 $ 8,146 $ 3,592 $ 8,146 The following table presents information about the composition of the FDIC loss-sharing asset, the clawback liability, and the non-single family and the single family covered assets as of the date indicated: September 30, 2016 Columbia River Bank American Marine Bank Summit Bank First Heritage Bank Total (in thousands) FDIC loss-sharing asset (liability) $ 349 $ 1,959 $ 1,577 $ (293 ) $ 3,592 Clawback liability $ 3,474 $ 1,280 $ — $ 708 $ 5,462 Non-single family covered assets $ 61,040 $ 9,366 $ 6,700 $ 12,145 $ 89,251 Single family covered assets $ 6,110 $ 18,563 $ 5,077 $ 1,645 $ 31,395 Loss-sharing expiration dates: Non-single family Expired Expired Expired Expired Single family First Quarter 2020 First Quarter 2020 Second Quarter 2021 Second Quarter 2021 Recovery-sharing expiration dates: Non-single family First Quarter 2018 First Quarter 2018 Second Quarter 2019 Second Quarter 2019 Single family First Quarter 2020 First Quarter 2020 Second Quarter 2021 Second Quarter 2021

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Other Intangible Assets In accordance with the Intangibles – Goodwill and Other topic of the FASB ASC, goodwill is not amortized but is reviewed for potential impairment at the reporting unit level. Management analyzes its goodwill for impairment on an annual basis on July 31 and between annual tests in certain circumstances such as material adverse changes in legal, business, regulatory and economic factors. An impairment loss is recorded to the extent that the carrying amount of goodwill exceeds its implied fair value. The Company performed an impairment assessment as of July 31, 2016 and concluded that there was no impairment. The core deposit intangible (“CDI”) is evaluated for impairment if events and circumstances indicate a possible impairment. The CDI is amortized on an accelerated basis over an estimated life of 10 years . The following table sets forth activity for goodwill and other intangible assets for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 (in thousands) Goodwill Goodwill at beginning of period $ 382,762 $ 382,537 $ 382,762 $ 382,537 Provisional period adjustments — 225 — 225 Total goodwill $ 382,762 $ 382,762 $ 382,762 $ 382,762 Other intangible assets, net Core deposit intangible: Gross core deposit intangible balance at beginning of period 58,598 58,598 58,598 58,598 Accumulated amortization at beginning of period (39,006 ) (32,593 ) (35,940 ) (29,058 ) Core deposit intangible, net at beginning of period 19,592 26,005 22,658 29,540 CDI current period amortization (1,460 ) (1,695 ) (4,526 ) (5,230 ) Total core deposit intangible, net at end of period 18,132 24,310 18,132 24,310 Intangible assets not subject to amortization 919 919 919 919 Other intangible assets, net at end of period 19,051 25,229 19,051 25,229 Total goodwill and other intangible assets at end of period $ 401,813 $ 407,991 $ 401,813 $ 407,991 The following table provides the estimated future amortization expense of core deposit intangibles for the remaining three months ending December 31, 2016 and the succeeding four years: Amount (in thousands) Year ending December 31, 2016 $ 1,419 2017 4,913 2018 3,855 2019 2,951 2020 2,048

Derivatives and Balance Sheet O

Derivatives and Balance Sheet Offsetting	9 Months Ended
	Sep. 30, 2016
General Discussion of Derivative Instruments and Hedging Activities [Abstract]
Derivatives and Hedging Activities	Derivatives and Balance Sheet Offsetting The Company periodically enters into certain commercial loan interest rate swap agreements in order to provide commercial loan customers the ability to convert from variable to fixed interest rates. Under these agreements, the Company enters into a variable-rate loan agreement with a customer in addition to a swap agreement. This swap agreement effectively converts the customer’s variable rate loan into a fixed rate. The Company then enters into a corresponding swap agreement with a third-party in order to offset its exposure on the variable and fixed components of the customer agreement. As the interest rate swap agreements with the customers and third parties are not designated as hedges under the Derivatives and Hedging topic of the FASB ASC, the instruments are marked to market in earnings. The notional amount of open interest rate swap agreements at September 30, 2016 and December 31, 2015 was $286.5 million and $264.4 million , respectively. During the three and nine months ended September 30, 2016 , a mark-to-market gain of $9 thousand and $2 thousand , respectively, were recorded to other noninterest expense. During the three and nine months ended September 30, 2015 , mark-to-market losses of $6 thousand and $2 thousand , respectively, were recorded to other noninterest expense. The following table presents the fair value of derivatives not designated as hedging instruments at September 30, 2016 and December 31, 2015 : Asset Derivatives Liability Derivatives September 30, 2016 December 31, 2015 September 30, 2016 December 31, 2015 Balance Sheet Fair Value Balance Sheet Fair Value Balance Sheet Fair Value Balance Sheet Fair Value (in thousands) Interest rate contracts Other assets $ 19,803 Other assets $ 12,438 Other liabilities $ 19,841 Other liabilities $ 12,478 The Company is party to interest rate contracts and repurchase agreements that are subject to enforceable master netting arrangements or similar agreements. Under these agreements, the Company may have the right to net settle multiple contracts with the same counterparty. The following tables show the gross interest rate swap agreements and repurchase agreements in the consolidated balance sheets and the respective collateral received or pledged in the form of other financial instruments, which are generally marketable securities. The collateral amounts in these tables are limited to the outstanding balances of the related asset or liability. Therefore, instances of overcollateralization are not shown. Gross Amounts of Recognized Assets/Liabilities Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts of Assets/Liabilities Presented in the Consolidated Balance Sheets Gross Amounts Not Offset in the Consolidated Balance Sheets Collateral Posted Net Amount September 30, 2016 (in thousands) Assets Interest rate contracts $ 19,803 $ — $ 19,803 $ — $ 19,803 Liabilities Interest rate contracts $ 19,841 $ — $ 19,841 $ (19,841 ) $ — Repurchase agreements $ 69,189 $ — $ 69,189 $ (69,189 ) $ — December 31, 2015 Assets Interest rate contracts $ 12,438 $ — $ 12,438 $ — $ 12,438 Liabilities Interest rate contracts $ 12,478 $ — $ 12,478 $ (12,478 ) $ — Repurchase agreements $ 99,699 $ — $ 99,699 $ (99,699 ) $ — The following table presents the class of collateral pledged for repurchase agreements as well as the remaining contractual maturity of the repurchase agreements: Remaining contractual maturity of the agreements Overnight and continuous Up to 30 days 30 - 90 days Greater than 90 days Total September 30, 2016 (in thousands) Class of collateral pledged for repurchase agreements U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations $ 44,189 $ — $ — $ 25,000 $ 69,189 Gross amount of recognized liabilities for repurchase agreements 69,189 Amounts related to agreements not included in offsetting disclosure $ — The collateral utilized for the Company’s repurchase agreements is subject to market fluctuations as well as prepayments of principal. The Company monitors the risk of the fair value of its pledged collateral falling below acceptable amounts based on the type of the underlying repurchase agreement. The pledged collateral related to the Company’s term wholesale repurchase agreement, which matures in 2018, is monitored on a monthly basis and additional capital is pledged when necessary. The pledged collateral related to the Company’s sweep repurchase agreements, which mature on an overnight basis, is monitored on a daily basis as the underlying sweep accounts can have frequent transaction activity and the amount of pledged collateral is adjusted as necessary.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	9 Months Ended
	Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Text Block]	Commitments and Contingent Liabilities Lease Commitments: The Company’s lease commitments consist primarily of leased locations under various non-cancellable operating leases that expire between 2016 and 2043. The majority of the leases contain renewal options and provisions for increases in rental rates based on an agreed upon index or predetermined escalation schedule. Sale-leaseback transaction: On August 24, 2016, the Company sold one of its Washington facilities and leased back the portion of the facility utilized for branch operations. The resulting gain on sale of $742 thousand was deferred in accordance with the Leases topic of the FASB ASC and is being amortized over the life of the respective lease. At September 30, 2016 , the deferred gain was $730 thousand and is a component of "Other liabilities" in the consolidated balance sheet. Exit or disposal activities: As part of ongoing evaluations of facilities owned or leased by the Company for ongoing economic benefit, a decision was made to cease using one of our Idaho branch locations during the current quarter. As a result, in addition to recording a cease-use liability of $849 thousand in the current quarter, the Company also made a change in estimate for the useful lives of the fixed assets associated with this facility. The total expense related to the exit activity for the three and nine months ended September 30, 2016 was $857 thousand and $883 thousand , respectively, and was recorded in the noninterest expense line item "Occupancy" in the consolidated statements of income. Financial Instruments with Off-Balance Sheet Risk: In the normal course of business, the Company makes loan commitments (typically unfunded loans and unused lines of credit) and issues standby letters of credit to accommodate the financial needs of its customers. At September 30, 2016 and December 31, 2015 , the Company’s loan commitments amounted to $2.10 billion and $1.93 billion , respectively. Standby letters of credit commit the Company to make payments on behalf of customers under specified conditions. Historically, no significant losses have been incurred by the Company under standby letters of credit. Both arrangements have credit risk essentially the same as that involved in extending loans to customers and are subject to the Company’s normal credit policies, including collateral requirements, where appropriate. Standby letters of credit were $48.4 million and $38.7 million at September 30, 2016 and December 31, 2015 , respectively. In addition, commitments under commercial letters of credit used to facilitate customers’ trade transactions and other off-balance sheet liabilities amounted to $6.6 million and $5.0 million at September 30, 2016 and December 31, 2015 , respectively. Legal Proceedings: The Company and its subsidiaries are from time to time defendants in and are threatened with various legal proceedings arising from their regular business activities. Management, after consulting with legal counsel, is of the opinion that the ultimate liability, if any, resulting from these pending or threatened actions and proceedings will not have a material effect on the financial statements of the Company.

Shareholders' Equity

Shareholders' Equity	9 Months Ended
	Sep. 30, 2016
Stockholders' Equity Note [Abstract]
Shareholders' Equity	Shareholders’ Equity Preferred Stock: In conjunction with the 2013 acquisition of West Coast Bancorp, the Company issued 8,782 shares of mandatorily convertible cumulative participating preferred stock, Series B (“Series B Preferred Stock”). The Series B Preferred Stock is not subject to the operation of a sinking fund. The Series B Preferred Stock is not redeemable by the Company and is perpetual with no maturity. The holders of Series B Preferred Stock have no general voting rights. If the Company declares and pays a dividend to its common shareholders, it must declare and pay to its holders of Series B Preferred Stock, on the same date, a dividend in an amount per share of the Series B Preferred Stock that is intended to provide such holders dividends in the amount they would have received if shares of Series B Preferred Stock had been converted into common stock as of that date. The outstanding shares of Series B Preferred Stock are convertible into 102,363 shares of Company common stock. Dividends: On January 28, 2016 , the Company declared a quarterly cash dividend of $0.18 per common share and common share equivalent for holders of preferred stock, and a special cash dividend of $0.20 per common share and common share equivalent for holders of preferred stock, both payable on February 24, 2016 to shareholders of record at the close of business on February 10, 2016 . On April 27, 2016 , the Company declared a regular quarterly cash dividend of $0.19 per common share and common share equivalent for holders of preferred stock, and a special cash dividend of $0.18 per common share and common share equivalent for holders of preferred stock, both payable on May 25, 2016 to shareholders of record at the close of business on May 11, 2016 . On July 28, 2016 , the Company declared a regular quarterly cash dividend of $0.20 per common share and common share equivalent for holders of preferred stock, and a special cash dividend of $0.19 per common share and common share equivalent for holders of preferred stock, both payable on August 24, 2016 to shareholders of record at the close of business on August 10, 2016 . Subsequent to quarter end, on October 27, 2016 , the Company declared a regular quarterly cash dividend of $0.20 per common share and common share equivalent for holders of preferred stock, and a special cash dividend of $0.19 per common share and common share equivalent for holders of preferred stock, both payable on November 23, 2016 to shareholders of record at the close of business on November 9, 2016 . The payment of cash dividends is subject to federal regulatory requirements for capital levels and other restrictions. In addition, the cash dividends paid by Columbia Bank to the Company are subject to both federal and state regulatory requirements.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	9 Months Ended
	Sep. 30, 2016
Accumulated Other Comprehensive Income (Loss) [Abstract]
Accumulated Other Comprehensive Income	Accumulated Other Comprehensive Income (Loss) The following table shows changes in accumulated other comprehensive income (loss) by component for the three and nine month periods ended September 30, 2016 and 2015 : Unrealized Gains and Losses on Available-for-Sale Securities (1) Unrealized Gains and Losses on Pension Plan Liability (1) Total (1) Three months ended September 30, 2016 (in thousands) Beginning balance $ 27,280 $ (6,469 ) $ 20,811 Other comprehensive loss before reclassifications (4,049 ) — (4,049 ) Amounts reclassified from accumulated other comprehensive income (loss) (364 ) 107 (257 ) Net current-period other comprehensive income (loss) (4,413 ) 107 (4,306 ) Ending balance $ 22,867 $ (6,362 ) $ 16,505 Three months ended September 30, 2015 Beginning balance $ 4,819 $ (2,030 ) $ 2,789 Other comprehensive income before reclassifications 10,126 — 10,126 Amounts reclassified from accumulated other comprehensive income (loss) (151 ) 62 (89 ) Net current-period other comprehensive income 9,975 62 10,037 Ending balance $ 14,794 $ (1,968 ) $ 12,826 Nine months ended September 30, 2016 Beginning balance $ 386 $ (6,681 ) $ (6,295 ) Other comprehensive income before reclassifications 23,229 — 23,229 Amounts reclassified from accumulated other comprehensive income (loss) (748 ) 319 (429 ) Net current-period other comprehensive income 22,481 319 22,800 Ending balance $ 22,867 $ (6,362 ) $ 16,505 Nine months ended September 30, 2015 Beginning balance $ 7,462 $ (1,841 ) $ 5,621 Other comprehensive income (loss) before reclassifications 8,161 (280 ) 7,881 Amounts reclassified from accumulated other comprehensive income (loss) (829 ) 153 (676 ) Net current-period other comprehensive income (loss) 7,332 (127 ) 7,205 Ending balance $ 14,794 $ (1,968 ) $ 12,826 __________ (1) All amounts are net of tax. Amounts in parenthesis indicate debits. The following table shows details regarding the reclassifications from accumulated other comprehensive income (loss) for the three and nine month periods ended September 30, 2016 and 2015 : Amount Reclassified from Accumulated Other Comprehensive Income (Loss) Three Months Ended September 30, Nine Months Ended September 30, Affected line Item in the Consolidated 2016 2015 2016 2015 Statement of Income (in thousands) Unrealized gains and losses on available-for-sale securities Investment securities gains $ 572 $ 236 $ 1,174 $ 1,300 Investment securities gains, net 572 236 1,174 1,300 Total before tax (208 ) (85 ) (426 ) (471 ) Income tax provision $ 364 $ 151 $ 748 $ 829 Net of tax Amortization of pension plan liability Actuarial losses $ (167 ) $ (97 ) $ (501 ) $ (240 ) Compensation and employee benefits (167 ) (97 ) (501 ) (240 ) Total before tax 60 35 182 87 Income tax benefit $ (107 ) $ (62 ) $ (319 ) $ (153 ) Net of tax

Fair Value Accounting and Measu

Fair Value Accounting and Measurement	9 Months Ended
	Sep. 30, 2016
Fair Value Disclosures [Abstract]
Fair Value Accounting and Measurement	Fair Value Accounting and Measurement The Fair Value Measurements and Disclosures topic of the FASB ASC defines fair value, establishes a consistent framework for measuring fair value and expands disclosure requirements about fair value. We hold fixed and variable rate interest-bearing securities, investments in marketable equity securities and certain other financial instruments, which are carried at fair value. Fair value is determined based upon quoted prices when available or through the use of alternative approaches, such as matrix or model pricing, when market quotes are not readily accessible or available. The valuation techniques are based upon observable and unobservable inputs. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect our own market assumptions. These two types of inputs create the following fair value hierarchy: Level 1 – Quoted prices for identical instruments in active markets that are accessible at the measurement date. Level 2 – Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model derived valuations whose inputs are observable or whose significant value drivers are observable. Level 3 – Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable. Fair values are determined as follows: Securities at fair value are priced using a combination of market activity, industry recognized information sources, yield curves, discounted cash flow models and other factors. These fair value calculations are considered a Level 2 input method under the provisions of the Fair Value Measurements and Disclosures topic of the FASB ASC for all securities other than U.S. Treasury Notes, which are considered a Level 1 input method. Interest rate contract positions are valued in models, which use as their basis, readily observable market parameters and are classified within Level 2 of the valuation hierarchy. The following table sets forth the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis at September 30, 2016 and December 31, 2015 by level within the fair value hierarchy. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement: Fair value Fair Value Measurements at Reporting Date Using Level 1 Level 2 Level 3 September 30, 2016 (in thousands) Assets Securities available for sale: U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations $ 1,512,924 $ — $ 1,512,924 $ — State and municipal debt securities 503,118 — 503,118 — U.S. government agency and government-sponsored enterprise securities 338,292 — 338,292 — U.S. government securities 548 548 — — Other securities 5,202 — 5,202 — Total securities available for sale $ 2,360,084 $ 548 $ 2,359,536 $ — Other assets (Interest rate contracts) $ 19,803 $ — $ 19,803 $ — Liabilities Other liabilities (Interest rate contracts) $ 19,841 $ — $ 19,841 $ — Fair value Fair Value Measurements at Reporting Date Using Level 1 Level 2 Level 3 December 31, 2015 (in thousands) Assets Securities available for sale: U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations $ 1,286,489 $ — $ 1,286,489 $ — State and municipal debt securities 492,169 — 492,169 — U.S. government agency and government-sponsored enterprise securities 353,782 — 353,782 — U.S. government securities 20,137 20,137 — — Other securities 5,117 — 5,117 — Total securities available for sale $ 2,157,694 $ 20,137 $ 2,137,557 $ — Other assets (Interest rate contracts) $ 12,438 $ — $ 12,438 $ — Liabilities Other liabilities (Interest rate contracts) $ 12,478 $ — $ 12,478 $ — There were no transfers between Level 1 and Level 2 of the valuation hierarchy during the nine month periods ended September 30, 2016 and 2015 . The Company recognizes transfers between levels of the valuation hierarchy based on the valuation level at the end of the reporting period. Nonrecurring Measurements Certain assets and liabilities are measured at fair value on a nonrecurring basis after initial recognition such as loans measured for impairment and OREO. The following methods were used to estimate the fair value of each such class of financial instrument: Impaired loans —A loan is considered to be impaired when, based on current information and events, it is probable that the Company will be unable to collect all amounts due (both interest and principal) according to the contractual terms of the loan agreement. Impaired loans are measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate, a loan’s observable market price, or the fair market value of the collateral less estimated costs to sell if the loan is a collateral-dependent loan. Generally, the Company utilizes the fair market value of the collateral to measure impairment. The impairment evaluations are performed in conjunction with the allowance process on a quarterly basis by officers in the Special Credits group, which reports to the Chief Credit Officer. The Real Estate Appraisal Services Department (“REASD”), which also reports to the Chief Credit Officer, is responsible for obtaining appraisals from third-parties or performing internal evaluations. If an appraisal is obtained from a third-party, the REASD reviews the appraisal to evaluate the adequacy of the appraisal report, including its scope, methods, accuracy, and reasonableness. Other real estate owned —OREO is real property that the Bank has taken ownership of in partial or full satisfaction of a loan or loans. OREO is generally measured based on the property’s fair market value as indicated by an appraisal or a letter of intent to purchase. OREO is initially recorded at the fair value less estimated costs to sell. This amount becomes the property’s new basis. Any fair value adjustments based on the property’s fair value less estimated costs to sell at the date of acquisition are charged to the allowance, or in the event of a write-up without previous losses charged to the allowance, a credit to earnings is recorded. Management periodically reviews OREO in an effort to ensure the property is recorded at its fair value, net of estimated costs to sell. Any fair value adjustments subsequent to acquisition are charged or credited to earnings. The initial and subsequent evaluations are performed by officers in the Special Credits group, which reports to the Chief Credit Officer. The REASD obtains appraisals from third-parties for OREO and performs internal evaluations. If an appraisal is obtained from a third-party, the REASD reviews the appraisal to evaluate the adequacy of the appraisal report, including its scope, methods, accuracy, and reasonableness. The following tables set forth information related to the Company’s assets that were measured using fair value estimates on a nonrecurring basis during the current and prior year quarterly periods: Fair value at Fair Value Measurements at Reporting Date Using Losses During the Three Months Ended Losses During the Nine Months Ended Level 1 Level 2 Level 3 (in thousands) Impaired loans $ 2,304 $ — $ — $ 2,304 $ (647 ) $ (3,285 ) OREO 335 — — 335 (14 ) (14 ) $ 2,639 $ — $ — $ 2,639 $ (661 ) $ (3,299 ) Fair value at Fair Value Measurements at Reporting Date Using Losses During the Three Months Ended Losses During the Nine Months Ended September 30, 2015 Level 1 Level 2 Level 3 (in thousands) Impaired loans $ 350 $ — $ — $ 350 $ (1,012 ) $ (1,012 ) OREO 3,286 — — 3,286 (646 ) (662 ) $ 3,636 $ — $ — $ 3,636 $ (1,658 ) $ (1,674 ) The losses on impaired loans disclosed above represent the amount of the specific reserve and/or charge-offs during the period applicable to loans held at period end. The amount of the specific reserve is included in the allowance for loan and lease losses. The losses on OREO disclosed above represent the write-downs taken at foreclosure that were charged to the allowance for loan and lease losses, as well as subsequent changes in any valuation allowances from updated appraisals that were recorded to earnings. Quantitative information about Level 3 fair value measurements The range and weighted-average of the significant unobservable inputs used to fair value our Level 3 nonrecurring assets, along with the valuation techniques used, are shown in the following table: Fair value at Valuation Technique Unobservable Input Range (Weighted Average) (1) (dollars in thousands) Impaired loans - collateral-dependent (3) $ 943 Fair Market Value of Collateral Adjustment to Stated Value N/A (2) Impaired loans - other $ 1,361 Discounted Cash Flow Discount Rate 2.85% - 6.50% (3.85%) OREO $ 335 Fair Market Value of Collateral Adjustment to Appraisal Value N/A (2) (1) Discount rate used in discounted cash flow valuation. (2) Quantitative disclosures are not provided for collateral-dependent impaired loans and OREO because there were no adjustments made to the appraisal values or stated values during the current period. (3) Collateral consists of fixed assets and accounts receivable. Fair value at Valuation Technique Unobservable Input Range (Weighted Average) (1) (dollars in thousands) Impaired loans $ 350 Fair Market Value of Collateral Adjustment to Appraisal Value N/A (2) OREO $ 3,286 Fair Market Value of Collateral Adjustment to Appraisal Value N/A (2) (1) Discount applied to appraisal value, letter of intent to purchase, or stated value (in the case of accounts receivable, inventory and equipment). (2) Quantitative disclosures are not provided for impaired loans and OREO because there were no adjustments made to the appraisal value during the current period. Fair value of financial instruments Because broadly traded markets do not exist for most of the Company’s financial instruments, the fair value calculations attempt to incorporate the effect of current market conditions at a specific time. These determinations are subjective in nature, involve uncertainties and matters of significant judgment and do not include tax ramifications; therefore, the results cannot be determined with precision, substantiated by comparison to independent markets and may not be realized in an actual sale or immediate settlement of the instruments. There may be inherent weaknesses in any calculation technique, and changes in the underlying assumptions used, including discount rates and estimates of future cash flows, could significantly affect the results. For all of these reasons, the aggregation of the fair value calculations presented herein do not represent, and should not be construed to represent, the underlying value of the Company. The following methods and assumptions were used to estimate the fair value of each class of financial instruments for which it is practicable to estimate that value: Cash and due from banks and interest-earning deposits with banks —The fair value of financial instruments that are short-term or reprice frequently and that have little or no risk are considered to have a fair value that approximates carrying value (Level 1). Securities available for sale —Securities at fair value, other than U.S. Treasury Notes, are priced using a combination of market activity, industry recognized information sources, yield curves, discounted cash flow models and other factors (Level 2). U.S. Treasury Notes are priced using quotes in active markets (Level 1). Federal Home Loan Bank stock —The fair value is based upon the par value of the stock which equates to its carrying value (Level 2). Loans held for sale —The carrying amount of loans held for sale approximates their fair values due to the short period of time between the origination and sale dates (Level 2). Loans —Loans are not recorded at fair value on a recurring basis . Nonrecurring fair value adjustments are periodically recorded on impaired loans that are measured for impairment based on the fair value of collateral. For most performing loans, fair value is estimated using expected duration and lending rates that would have been offered on September 30, 2016 or December 31, 2015 , for loans which mirror the attributes of the loans with similar rate structures and average maturities. The fair values resulting from these calculations are reduced by an amount representing the change in estimated fair value attributable to changes in borrowers’ credit quality since the loans were originated. For nonperforming loans, fair value is estimated by applying a valuation discount based upon loan sales data from the FDIC. For PCI loans, fair value is estimated by discounting the expected future cash flows using a lending rate that would have been offered on September 30, 2016 (Level 3). FDIC loss-sharing asset —The fair value of the FDIC loss-sharing asset is estimated based on discounting the expected future cash flows using an estimated market rate (Level 3). Interest rate contracts —Interest rate swap positions are valued in discounted cash flow models, which use readily observable market parameters as their basis (Level 2). Deposits —For deposits with no contractual maturity, the fair value is equal to the carrying value (Level 1). The fair value of fixed maturity deposits is based on discounted cash flows using the difference between the deposit rate and current market rates for deposits of similar remaining maturities (Level 2). FHLB advances —The fair value of FHLB advances is estimated based on discounting the future cash flows using the market rate currently offered (Level 2). Repurchase Agreements —The fair value of term repurchase agreements is estimated based on discounting the future cash flows using the market rate currently offered. The carrying amount of sweep repurchase agreements approximates their fair values due to the short period of time between repricing dates (Level 2). Other Financial Instruments —The majority of our commitments to extend credit and standby letters of credit carry current market interest rates if converted to loans, as such, carrying value is assumed to equal fair value. The following tables summarize carrying amounts and estimated fair values of selected financial instruments as well as assumptions used by the Company in estimating fair value at September 30, 2016 and December 31, 2015 : September 30, 2016 Carrying Fair Level 1 Level 2 Level 3 (in thousands) Assets Cash and due from banks $ 180,839 $ 180,839 $ 180,839 $ — $ — Interest-earning deposits with banks 11,225 11,225 11,225 — — Securities available for sale 2,360,084 2,360,084 548 2,359,536 — FHLB stock 12,640 12,640 — 12,640 — Loans held for sale 3,361 3,361 — 3,361 — Loans 6,189,493 6,274,917 — — 6,274,917 FDIC loss-sharing asset 3,592 594 — — 594 Interest rate contracts 19,803 19,803 — 19,803 — Liabilities Deposits $ 8,057,816 $ 8,054,970 $ 7,645,310 $ 409,660 $ — FHLB advances 66,502 67,826 — 67,826 — Repurchase agreements 69,189 69,543 — 69,543 — Interest rate contracts 19,841 19,841 — 19,841 — December 31, 2015 Carrying Fair Level 1 Level 2 Level 3 (in thousands) Assets Cash and due from banks $ 166,929 $ 166,929 $ 166,929 $ — $ — Interest-earning deposits with banks 8,373 8,373 8,373 — — Securities available for sale 2,157,694 2,157,694 20,137 2,137,557 — FHLB stock 12,722 12,722 — 12,722 — Loans held for sale 4,509 4,509 — 4,509 — Loans 5,746,855 5,752,423 — — 5,752,423 FDIC loss-sharing asset 6,568 921 — — 921 Interest rate contracts 12,438 12,438 — 12,438 — Liabilities Deposits $ 7,438,829 $ 7,434,787 $ 6,979,924 $ 454,863 $ — FHLB advances 68,531 69,176 — 69,176 — Repurchase agreements 99,699 100,346 — 100,346 — Interest rate contracts 12,478 12,478 — 12,478 —

Earnings per Common Share

Earnings per Common Share	9 Months Ended
	Sep. 30, 2016
Earnings Per Share [Abstract]
Earnings Per Common Share	Earnings per Common Share The Company applies the two-class method of computing basic and diluted EPS. Under the two-class method, EPS is determined for each class of common stock and participating security according to dividends declared and participation rights in undistributed earnings. The Company issues restricted shares under share-based compensation plans and preferred shares which qualify as participating securities. The following table sets forth the computation of basic and diluted earnings per share for the three and nine months ended September 30, 2016 and 2015 : Three Months Ended Nine Months Ended September 30, September 30, 2016 2015 2016 2015 (in thousands except per share) Basic EPS: Net income $ 27,484 $ 25,780 $ 74,148 $ 72,087 Less: Earnings allocated to participating securities: Preferred shares 48 45 131 127 Nonvested restricted shares 378 296 953 772 Earnings allocated to common shareholders $ 27,058 $ 25,439 $ 73,064 $ 71,188 Weighted average common shares outstanding 57,215 57,051 57,173 57,007 Basic earnings per common share $ 0.47 $ 0.45 $ 1.28 $ 1.25 Diluted EPS: Earnings allocated to common shareholders (1) $ 27,058 $ 25,439 $ 73,064 $ 71,188 Weighted average common shares outstanding 57,215 57,051 57,173 57,007 Dilutive effect of equity awards 10 13 10 14 Weighted average diluted common shares outstanding 57,225 57,064 57,183 57,021 Diluted earnings per common share $ 0.47 $ 0.45 $ 1.28 $ 1.25 Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive 15 29 20 40 __________ (1) Earnings allocated to common shareholders for basic and diluted EPS may differ under the two-class method as a result of adding common stock equivalents for options and warrants to dilutive shares outstanding, which alters the ratio used to allocate earnings to common shareholders and participating securities for the purposes of calculating diluted EPS.

Securities (Tables)

Securities (Tables)	9 Months Ended
	Sep. 30, 2016
Available-for-sale Securities [Abstract]
Securities Available for Sale	The following table summarizes the amortized cost, gross unrealized gains and losses and the resulting fair value of securities available for sale: Amortized Gross Gross Fair Value (in thousands) September 30, 2016 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations $ 1,498,158 $ 17,148 $ (2,382 ) $ 1,512,924 State and municipal securities 487,308 16,192 (382 ) 503,118 U.S. government agency and government-sponsored enterprise securities 333,423 5,009 (140 ) 338,292 U.S. government securities 548 — — 548 Other securities 5,284 64 (146 ) 5,202 Total $ 2,324,721 $ 38,413 $ (3,050 ) $ 2,360,084 December 31, 2015 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations $ 1,296,955 $ 4,525 $ (14,991 ) $ 1,286,489 State and municipal securities 480,417 12,690 (938 ) 492,169 U.S. government agency and government-sponsored enterprise securities 354,515 1,113 (1,846 ) 353,782 U.S. government securities 20,439 — (302 ) 20,137 Other securities 5,284 24 (191 ) 5,117 Total $ 2,157,610 $ 18,352 $ (18,268 ) $ 2,157,694
Schedule of gross realized gains and losses on sales and calls of securities available for sale	The following table provides the gross realized gains and losses on the sales of securities for the periods indicated: Three Months Ended Nine Months Ended September 30, September 30, 2016 2015 2016 2015 (in thousands) Gross realized gains $ 572 $ 236 $ 1,174 $ 1,310 Gross realized losses — — — (10 ) Net realized gains $ 572 $ 236 $ 1,174 $ 1,300
Schedule of Contractual Maturities of Investment Securities Available for Sale	The scheduled contractual maturities of investment securities available for sale at September 30, 2016 are presented as follows: September 30, 2016 Amortized Cost Fair Value (in thousands) Due within one year $ 28,765 $ 28,874 Due after one year through five years 484,206 493,479 Due after five years through ten years 688,715 703,388 Due after ten years 1,117,751 1,129,141 Other securities with no stated maturity 5,284 5,202 Total investment securities available-for-sale $ 2,324,721 $ 2,360,084
Carrying Value of Securities Pledged As Collateral	The following table summarizes the carrying value of securities pledged as collateral to secure public deposits, borrowings and other purposes as permitted or required by law: September 30, 2016 (in thousands) Washington and Oregon State to secure public deposits $ 235,931 Federal Reserve Bank to secure borrowings 40,877 Other securities pledged 147,336 Total securities pledged as collateral $ 424,144
Summary of Gross Unrealized Losses and Fair Value of the Investments with Unrealized Losses	The following table shows the gross unrealized losses and fair value of the Company’s investments with unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at September 30, 2016 and December 31, 2015 : Less than 12 Months 12 Months or More Total Fair Unrealized Fair Unrealized Fair Unrealized (in thousands) September 30, 2016 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations $ 176,508 $ (548 ) $ 163,859 $ (1,834 ) $ 340,367 $ (2,382 ) State and municipal securities 35,915 (337 ) 3,489 (45 ) 39,404 (382 ) U.S. government agency and government-sponsored enterprise securities 22,115 (140 ) — — 22,115 (140 ) Other securities — — 2,810 (146 ) 2,810 (146 ) Total $ 234,538 $ (1,025 ) $ 170,158 $ (2,025 ) $ 404,696 $ (3,050 ) December 31, 2015 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations $ 664,509 $ (7,610 ) $ 214,325 $ (7,381 ) $ 878,834 $ (14,991 ) State and municipal securities 48,261 (358 ) 31,383 (580 ) 79,644 (938 ) U.S. government agency and government-sponsored enterprise securities 193,400 (1,128 ) 40,034 (718 ) 233,434 (1,846 ) U.S. government securities 10,343 (136 ) 9,794 (166 ) 20,137 (302 ) Other securities 2,300 (15 ) 2,780 (176 ) 5,080 (191 ) Total $ 918,813 $ (9,247 ) $ 298,316 $ (9,021 ) $ 1,217,129 $ (18,268 )

Loans (Tables)

Loans (Tables)	9 Months Ended
	Sep. 30, 2016
Financing Receivable, Recorded Investment [Line Items]
Analysis of Loan Portfolio by Major Types of Loans	The following is an analysis of the loan portfolio by segment (net of unearned income): September 30, 2016 December 31, 2015 Loans, excluding PCI loans PCI Loans Total Loans, excluding PCI loans PCI Loans Total (in thousands) Commercial business $ 2,630,017 $ 22,558 $ 2,652,575 $ 2,362,575 $ 34,848 $ 2,397,423 Real estate: One-to-four family residential 168,511 19,378 187,889 176,295 23,938 200,233 Commercial and multifamily residential 2,686,783 92,617 2,779,400 2,491,736 99,389 2,591,125 Total real estate 2,855,294 111,995 2,967,289 2,668,031 123,327 2,791,358 Real estate construction: One-to-four family residential 130,163 867 131,030 135,874 2,278 138,152 Commercial and multifamily residential 202,014 1,583 203,597 167,413 1,630 169,043 Total real estate construction 332,177 2,450 334,627 303,287 3,908 307,195 Consumer 325,741 15,761 341,502 342,601 18,823 361,424 Less: Net unearned income (36,236 ) — (36,236 ) (42,373 ) — (42,373 ) Total loans, net of unearned income 6,106,993 152,764 6,259,757 5,634,121 180,906 5,815,027 Less: Allowance for loan and lease losses (58,762 ) (11,502 ) (70,264 ) (54,446 ) (13,726 ) (68,172 ) Total loans, net $ 6,048,231 $ 141,262 $ 6,189,493 $ 5,579,675 $ 167,180 $ 5,746,855 Loans held for sale $ 3,361 $ — $ 3,361 $ 4,509 $ — $ 4,509
Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Analysis of Nonaccrual Loans	The following is an analysis of nonaccrual loans as of September 30, 2016 and December 31, 2015 : September 30, 2016 December 31, 2015 Recorded Unpaid Principal Recorded Unpaid Principal (in thousands) Commercial business: Secured $ 9,466 $ 19,689 $ 9,395 $ 15,688 Unsecured 36 216 42 256 Real estate: One-to-four family residential 579 1,303 820 1,866 Commercial & multifamily residential: Commercial land 934 922 349 332 Income property 1,957 2,177 2,843 3,124 Owner occupied 4,161 6,842 6,321 8,943 Real estate construction: One-to-four family residential: Land and acquisition — — 362 385 Residential construction 461 461 566 679 Consumer 3,772 4,042 766 990 Total $ 21,366 $ 35,652 $ 21,464 $ 32,263
Analysis of the Aged Loan Portfolio	The following is an aging of the recorded investment of the loan portfolio as of September 30, 2016 and December 31, 2015 : Current 30 - 59 60 - 89 Greater Total Nonaccrual Total Loans September 30, 2016 (in thousands) Commercial business: Secured $ 2,515,042 $ 2,542 $ 609 $ — $ 3,151 $ 9,466 $ 2,527,659 Unsecured 97,496 5 — — 5 36 97,537 Real estate: One-to-four family residential 164,927 400 34 — 434 579 165,940 Commercial & multifamily residential: Commercial land 238,887 — 200 — 200 934 240,021 Income property 1,376,735 90 — — 90 1,957 1,378,782 Owner occupied 1,043,376 58 — — 58 4,161 1,047,595 Real estate construction: One-to-four family residential: Land and acquisition 11,933 119 — — 119 — 12,052 Residential construction 116,327 213 305 — 518 461 117,306 Commercial & multifamily residential: Income property 89,373 — — — — — 89,373 Owner occupied 110,853 — — — — — 110,853 Consumer 314,581 649 873 — 1,522 3,772 319,875 Total $ 6,079,530 $ 4,076 $ 2,021 $ — $ 6,097 $ 21,366 $ 6,106,993 Current 30 - 59 60 - 89 Greater Total Nonaccrual Total Loans December 31, 2015 (in thousands) Commercial business: Secured $ 2,241,069 $ 11,611 $ 617 $ — $ 12,228 $ 9,395 $ 2,262,692 Unsecured 94,867 39 — — 39 42 94,948 Real estate: One-to-four family residential 170,913 1,637 66 — 1,703 820 173,436 Commercial & multifamily residential: Commercial land 212,740 69 — — 69 349 213,158 Income property 1,305,502 1,750 684 — 2,434 2,843 1,310,779 Owner occupied 939,396 599 — — 599 6,321 946,316 Real estate construction: One-to-four family residential: Land and acquisition 14,388 — — — — 362 14,750 Residential construction 119,809 — — — — 566 120,375 Commercial & multifamily residential: Income property 83,634 — — — — — 83,634 Owner occupied 81,671 — — — — — 81,671 Consumer 328,219 2,597 780 — 3,377 766 332,362 Total $ 5,592,208 $ 18,302 $ 2,147 $ — $ 20,449 $ 21,464 $ 5,634,121
Impaired Financing Receivables	The following is an analysis of impaired loans as of September 30, 2016 and December 31, 2015 : Recorded Investment Recorded Investment Impaired Loans With Impaired Loans Without Recorded Unpaid Related Recorded Unpaid September 30, 2016 (in thousands) Commercial business: Secured $ 2,520,876 $ 6,783 $ 1,208 $ 1,277 $ 873 $ 5,575 $ 11,840 Unsecured 97,537 — — — — — — Real estate: One-to-four family residential 165,394 546 358 591 353 188 402 Commercial & multifamily residential: Commercial land 239,313 708 — — — 708 687 Income property 1,376,349 2,433 546 551 28 1,887 2,124 Owner occupied 1,043,849 3,746 — — — 3,746 6,340 Real estate construction: One-to-four family residential: Land and acquisition 11,950 102 — — — 102 102 Residential construction 116,970 336 — — — 336 336 Commercial & multifamily residential: Income property 89,373 — — — — — — Owner occupied 110,853 — — — — — — Consumer 316,281 3,594 2,976 3,010 46 618 700 Total $ 6,088,745 $ 18,248 $ 5,088 $ 5,429 $ 1,300 $ 13,160 $ 22,531 Recorded Investment Recorded Investment Impaired Loans With Impaired Loans Without Recorded Unpaid Related Recorded Unpaid December 31, 2015 (in thousands) Commercial business: Secured $ 2,257,168 $ 5,524 $ 690 $ 718 $ 321 $ 4,834 $ 6,455 Unsecured 94,948 — — — — — — Real estate: One-to-four family residential 172,150 1,286 314 339 314 972 1,397 Commercial & multifamily residential: Commercial land 213,158 — — — — — — Income property 1,308,673 2,106 — — — 2,106 2,311 Owner occupied 940,261 6,055 — — — 6,055 8,528 Real estate construction: One-to-four family residential: Land and acquisition 14,283 467 — — — 467 490 Residential construction 119,813 562 335 335 3 227 227 Commercial & multifamily residential: Income property 83,634 — — — — — — Owner occupied 81,671 — — — — — — Consumer 332,282 80 15 15 15 65 139 Total $ 5,618,041 $ 16,080 $ 1,354 $ 1,407 $ 653 $ 14,726 $ 19,547 The following table provides additional information on impaired loans for the three and nine month periods indicated: Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Average Recorded Interest Recognized Average Recorded Interest Recognized Average Recorded Interest Recognized Average Recorded Interest Recognized (in thousands) Commercial business: Secured $ 6,909 $ 15 $ 6,507 $ 3 $ 9,506 $ 48 $ 8,602 $ 10 Unsecured — — — — — — 1 — Real estate: One-to-four family residential 617 5 3,315 11 796 8 3,238 35 Commercial & multifamily residential: Commercial land 708 — — — 354 — 118 — Income property 1,939 8 2,061 10 2,010 19 3,114 27 Owner occupied 4,486 — 6,665 65 5,001 — 7,302 533 Real estate construction: One-to-four family residential: Land and acquisition 103 1 825 1 245 4 685 4 Residential construction 449 — 893 — 506 — 670 — Consumer 3,345 25 27 1 2,084 46 216 3 Total $ 18,556 $ 54 $ 20,293 $ 91 $ 20,502 $ 125 $ 23,946 $ 612
Analysis of loans classified as Troubled Debt Restructurings (“TDR”)	Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Average Recorded Interest Recognized Average Recorded Interest Recognized Average Recorded Interest Recognized Average Recorded Interest Recognized (in thousands) Commercial business: Secured $ 6,909 $ 15 $ 6,507 $ 3 $ 9,506 $ 48 $ 8,602 $ 10 Unsecured — — — — — — 1 — Real estate: One-to-four family residential 617 5 3,315 11 796 8 3,238 35 Commercial & multifamily residential: Commercial land 708 — — — 354 — 118 — Income property 1,939 8 2,061 10 2,010 19 3,114 27 Owner occupied 4,486 — 6,665 65 5,001 — 7,302 533 Real estate construction: One-to-four family residential: Land and acquisition 103 1 825 1 245 4 685 4 Residential construction 449 — 893 — 506 — 670 — Consumer 3,345 25 27 1 2,084 46 216 3 Total $ 18,556 $ 54 $ 20,293 $ 91 $ 20,502 $ 125 $ 23,946 $ 612 The following is an analysis of loans classified as troubled debt restructurings (“TDR”) during the three and nine months ended September 30, 2016 and 2015 : Three months ended September 30, 2016 Three months ended September 30, 2015 Number of TDR Modifications Pre-Modification Post-Modification Number of TDR Modifications Pre-Modification Post-Modification (dollars in thousands) Commercial business: Secured 2 $ 90 $ 90 4 $ 2,903 $ 2,903 Real estate: One-to-four family residential 1 85 85 — — — Consumer 10 731 731 — — — Total 13 $ 906 $ 906 4 $ 2,903 $ 2,903 Nine months ended September 30, 2016 Nine months ended September 30, 2015 Number of TDR Modifications Pre-Modification Post-Modification Number of TDR Modifications Pre-Modification Post-Modification (dollars in thousands) Commercial business: Secured 7 $ 1,753 $ 1,753 4 $ 2,903 $ 2,903 Real estate: One-to-four family residential 2 115 115 1 30 30 Commercial and multifamily residential: Owner occupied 1 250 250 — — — Consumer 28 3,442 3,442 — — — Total 38 $ 5,560 $ 5,560 5 $ 2,933 $ 2,933
Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Analysis of Loan Portfolio by Major Types of Loans	The following is an analysis of our PCI loans, net of related allowance for losses and remaining valuation discounts as of September 30, 2016 and December 31, 2015 : September 30, 2016 December 31, 2015 (in thousands) Commercial business $ 24,436 $ 38,784 Real estate: One-to-four family residential 22,227 27,195 Commercial and multifamily residential 98,178 106,308 Total real estate 120,405 133,503 Real estate construction: One-to-four family residential 867 2,326 Commercial and multifamily residential 1,754 1,834 Total real estate construction 2,621 4,160 Consumer 17,632 20,903 Subtotal of PCI loans 165,094 197,350 Less: Valuation discount resulting from acquisition accounting 12,330 16,444 Allowance for loan losses 11,502 13,726 PCI loans, net of allowance for loan losses $ 141,262 $ 167,180
Changes in Accretable Yield for Acquired Loans	The following table shows the changes in accretable yield for PCI loans for the three and nine months ended September 30, 2016 and 2015 : Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 (in thousands) Balance at beginning of period $ 52,909 $ 67,283 $ 58,981 $ 73,849 Accretion (4,902 ) (5,049 ) (12,905 ) (17,105 ) Disposals (178 ) 256 (157 ) (1,796 ) Reclassifications from nonaccretable difference 1,034 350 2,944 7,892 Balance at end of period $ 48,863 $ 62,840 $ 48,863 $ 62,840

Allowance for Loan and Lease 25

Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Tables)	9 Months Ended
	Sep. 30, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Credit Losses on Financing Receivables	The following tables show a detailed analysis of the allowance for the three and nine months ended September 30, 2016 and 2015 : Beginning Charge-offs Recoveries Provision (Recovery) Ending Specific General Three months ended September 30, 2016 (in thousands) Commercial business: Secured $ 31,808 $ (2,128 ) $ 787 $ 2,008 $ 32,475 $ 873 $ 31,602 Unsecured 1,265 (31 ) 67 (128 ) 1,173 — 1,173 Real estate: One-to-four family residential 675 — 81 221 977 353 624 Commercial & multifamily residential: Commercial land 1,422 — — 92 1,514 — 1,514 Income property 8,046 — 10 149 8,205 28 8,177 Owner occupied 6,336 — 10 487 6,833 — 6,833 Real estate construction: One-to-four family residential: Land and acquisition 587 — 2 (134 ) 455 — 455 Residential construction 1,376 — 19 (393 ) 1,002 — 1,002 Commercial & multifamily residential: Income property 904 — 107 (480 ) 531 — 531 Owner occupied 1,384 — — 57 1,441 — 1,441 Consumer 3,559 (383 ) 399 168 3,743 46 3,697 Purchased credit impaired 11,781 (2,062 ) 2,216 (433 ) 11,502 — 11,502 Unallocated 161 — — 252 413 — 413 Total $ 69,304 $ (4,604 ) $ 3,698 $ 1,866 $ 70,264 $ 1,300 $ 68,964 Beginning Charge-offs Recoveries Provision (Recovery) Ending Specific General Nine months ended September 30, 2016 (in thousands) Commercial business: Secured $ 32,321 $ (8,798 ) $ 2,126 $ 6,826 $ 32,475 $ 873 $ 31,602 Unsecured 1,299 (75 ) 143 (194 ) 1,173 — 1,173 Real estate: One-to-four family residential 916 (35 ) 142 (46 ) 977 353 624 Commercial & multifamily residential: Commercial land 1,178 (26 ) 2 360 1,514 — 1,514 Income property 6,616 — 191 1,398 8,205 28 8,177 Owner occupied 5,550 — 26 1,257 6,833 — 6,833 Real estate construction: One-to-four family residential: Land and acquisition 339 — 55 61 455 — 455 Residential construction 733 — 225 44 1,002 — 1,002 Commercial & multifamily residential: Income property 388 — 109 34 531 — 531 Owner occupied 1,006 — — 435 1,441 — 1,441 Consumer 3,531 (983 ) 765 430 3,743 46 3,697 Purchased credit impaired 13,726 (7,826 ) 5,291 311 11,502 — 11,502 Unallocated 569 — — (156 ) 413 — 413 Total $ 68,172 $ (17,743 ) $ 9,075 $ 10,760 $ 70,264 $ 1,300 $ 68,964 Beginning Charge-offs Recoveries Provision (Recovery) Ending Specific General Three months ended September 30, 2015 (in thousands) Commercial business: Secured $ 27,708 $ (2,439 ) $ 530 $ 5,189 $ 30,988 $ 1,020 $ 29,968 Unsecured 857 (131 ) 93 471 1,290 — 1,290 Real estate: One-to-four family residential 1,355 — 261 (420 ) 1,196 84 1,112 Commercial & multifamily residential: Commercial land 1,581 — 130 123 1,834 — 1,834 Income property 8,197 (83 ) 273 22 8,409 — 8,409 Owner occupied 5,801 (115 ) 14 473 6,173 17 6,156 Real estate construction: One-to-four family residential: Land and acquisition 497 — 98 (206 ) 389 64 325 Residential construction 958 — 7 (250 ) 715 — 715 Commercial & multifamily residential: Income property 407 — 2 (68 ) 341 — 341 Owner occupied 441 — — (31 ) 410 — 410 Consumer 3,182 (311 ) 297 49 3,217 14 3,203 Purchased credit impaired 16,174 (3,198 ) 1,533 (519 ) 13,990 — 13,990 Unallocated 2,099 — — (2,002 ) 97 — 97 Total $ 69,257 $ (6,277 ) $ 3,238 $ 2,831 $ 69,049 $ 1,199 $ 67,850 Beginning Charge-offs Recoveries Provision (Recovery) Ending Specific General Nine months ended September 30, 2015 (in thousands) Commercial business: Secured $ 25,923 $ (5,847 ) $ 1,242 $ 9,670 $ 30,988 $ 1,020 $ 29,968 Unsecured 927 (235 ) 208 390 1,290 — 1,290 Real estate: One-to-four family residential 2,281 (297 ) 288 (1,076 ) 1,196 84 1,112 Commercial & multifamily residential: Commercial land 799 — 130 905 1,834 — 1,834 Income property 9,159 (126 ) 3,532 (4,156 ) 8,409 — 8,409 Owner occupied 5,007 (115 ) 36 1,245 6,173 17 6,156 Real estate construction: One-to-four family residential: Land and acquisition 1,197 — 101 (909 ) 389 64 325 Residential construction 1,860 — 40 (1,185 ) 715 — 715 Commercial & multifamily residential: Income property 622 — 7 (288 ) 341 — 341 Owner occupied 434 — — (24 ) 410 — 410 Consumer 3,180 (1,521 ) 707 851 3,217 14 3,203 Purchased credit impaired 16,336 (10,174 ) 5,262 2,566 13,990 — 13,990 Unallocated 1,844 — — (1,747 ) 97 — 97 Total $ 69,569 $ (18,315 ) $ 11,553 $ 6,242 $ 69,049 $ 1,199 $ 67,850
Changes in the Allowance for Unfunded Commitments and Letters of Credit	Changes in the allowance for unfunded commitments and letters of credit, a component of “Other liabilities” in the consolidated balance sheet, are summarized as follows: Three Months Ended Nine Months Ended September 30, September 30, 2016 2015 2016 2015 (in thousands) Balance at beginning of period $ 2,780 $ 2,930 $ 2,930 $ 2,655 Net changes in the allowance for unfunded commitments and letters of credit 125 — (25 ) 275 Balance at end of period $ 2,905 $ 2,930 $ 2,905 $ 2,930
Financing Receivable Credit Quality Indicators	The following is an analysis of the credit quality of our loan portfolio, excluding PCI loans, as of September 30, 2016 and December 31, 2015 : Pass Special Mention Substandard Doubtful Loss Total September 30, 2016 (in thousands) Loans, excluding PCI loans: Commercial business: Secured $ 2,417,653 $ 48,462 $ 61,544 $ — $ — $ 2,527,659 Unsecured 96,402 800 335 — — 97,537 Real estate: One-to-four family residential 164,102 458 1,380 — — 165,940 Commercial and multifamily residential: Commercial land 233,795 5,276 950 — — 240,021 Income property 1,354,651 17,048 7,083 — — 1,378,782 Owner occupied 1,027,356 5,745 14,494 — — 1,047,595 Real estate construction: One-to-four family residential: Land and acquisition 12,052 — — — — 12,052 Residential construction 116,187 — 1,119 — — 117,306 Commercial and multifamily residential: Income property 89,373 — — — — 89,373 Owner occupied 106,310 — 4,543 — — 110,853 Consumer 312,602 — 7,273 — — 319,875 Total $ 5,930,483 $ 77,789 $ 98,721 $ — $ — 6,106,993 Less: Allowance for loan and lease losses 58,762 Loans, excluding PCI loans, net $ 6,048,231 Pass Special Mention Substandard Doubtful Loss Total December 31, 2015 (in thousands) Loans, excluding PCI loans: Commercial business: Secured $ 2,146,729 $ 59,746 $ 56,217 $ — $ — $ 2,262,692 Unsecured 93,347 278 1,323 — — 94,948 Real estate: One-to-four family residential 171,945 52 1,439 — — 173,436 Commercial and multifamily residential: Commercial land 207,768 4,966 424 — — 213,158 Income property 1,296,043 5,889 8,847 — — 1,310,779 Owner occupied 918,986 9,668 17,662 — — 946,316 Real estate construction: One-to-four family residential: Land and acquisition 14,388 — 362 — — 14,750 Residential construction 119,243 — 1,132 — — 120,375 Commercial and multifamily residential: Income property 83,634 — — — — 83,634 Owner occupied 81,270 — 401 — — 81,671 Consumer 328,286 — 4,076 — — 332,362 Total $ 5,461,639 $ 80,599 $ 91,883 $ — $ — 5,634,121 Less: Allowance for loan and lease losses 54,446 Loans, excluding PCI loans, net $ 5,579,675 The following is an analysis of the credit quality of our PCI loan portfolio as of September 30, 2016 and December 31, 2015 : Pass Special Mention Substandard Doubtful Loss Total September 30, 2016 (in thousands) PCI loans: Commercial business: Secured $ 21,420 $ 94 $ 2,191 $ — $ — $ 23,705 Unsecured 731 — — — — 731 Real estate: One-to-four family residential 20,996 — 1,231 — — 22,227 Commercial and multifamily residential: Commercial land 7,745 — 392 — — 8,137 Income property 31,481 — 2,445 — — 33,926 Owner occupied 54,471 — 1,644 — — 56,115 Real estate construction: One-to-four family residential: Land and acquisition 767 — 100 — — 867 Residential construction — — — — — — Commercial and multifamily residential: Income property 1,239 — — — — 1,239 Owner occupied 515 — — — — 515 Consumer 17,168 — 464 — — 17,632 Total $ 156,533 $ 94 $ 8,467 $ — $ — 165,094 Less: Valuation discount resulting from acquisition accounting 12,330 Allowance for loan losses 11,502 PCI loans, net $ 141,262 Pass Special Mention Substandard Doubtful Loss Total December 31, 2015 (in thousands) PCI loans: Commercial business: Secured $ 31,468 $ 101 $ 5,995 $ — $ — $ 37,564 Unsecured 1,218 — 2 — — 1,220 Real estate: One-to-four family residential 25,018 — 2,177 — — 27,195 Commercial and multifamily residential: Commercial land 8,234 — 664 — — 8,898 Income property 36,426 — 5,916 — — 42,342 Owner occupied 53,071 261 1,736 — — 55,068 Real estate construction: One-to-four family residential: Land and acquisition 1,086 — 479 — — 1,565 Residential construction 427 — 334 — — 761 Commercial and multifamily residential: Income property 1,303 — — — — 1,303 Owner occupied 531 — — — — 531 Consumer 20,122 — 781 — — 20,903 Total $ 178,904 $ 362 $ 18,084 $ — $ — 197,350 Less: Valuation discount resulting from acquisition accounting 16,444 Allowance for loan losses 13,726 PCI loans, net $ 167,180

Other Real Estate Owned (Tables

Other Real Estate Owned (Tables)	9 Months Ended
	Sep. 30, 2016
Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]
Summary of Other Real Estate Owned	The following tables set forth activity in OREO for the three and nine months ended September 30, 2016 and 2015 : Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 (in thousands) Balance, beginning of period $ 10,613 $ 20,617 $ 13,738 $ 22,190 Transfers in 891 915 1,202 8,751 Valuation adjustments (14 ) (664 ) (290 ) (1,457 ) Proceeds from sale of OREO property (2,569 ) (1,675 ) (5,845 ) (13,283 ) Gain on sale of OREO, net 73 263 189 3,255 Balance, end of period $ 8,994 $ 19,456 $ 8,994 $ 19,456

Covered Assets and FDIC Loss-27

Covered Assets and FDIC Loss-sharing Asset (Tables)	9 Months Ended
	Sep. 30, 2016
Covered Assets And FDIC Loss Sharing Asset [Line Items]
FDIC Loss-sharing Asset	The following table shows a detailed analysis of the FDIC loss-sharing asset for the three and nine months ended September 30, 2016 and 2015 : Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 (in thousands) Balance at beginning of period $ 4,266 $ 9,344 $ 6,568 $ 15,174 Adjustments not reflected in income: Cash (received from) paid to the FDIC, net 20 799 (23 ) (2,723 ) FDIC reimbursable recoveries, net (590 ) (362 ) (756 ) (1,326 ) Adjustments reflected in income: Amortization, net (315 ) (1,416 ) (2,530 ) (5,086 ) Loan impairment (recapture) 266 (119 ) 393 1,413 Sale of other real estate (49 ) (126 ) 71 (753 ) Valuation adjustments of other real estate owned — 25 (22 ) 1,148 Other (6 ) 1 (109 ) 299 Balance at end of period $ 3,592 $ 8,146 $ 3,592 $ 8,146
Schedule of FDIC Loss-Sharing Agreements and Covered Assets [Table Text Block]	The following table presents information about the composition of the FDIC loss-sharing asset, the clawback liability, and the non-single family and the single family covered assets as of the date indicated: September 30, 2016 Columbia River Bank American Marine Bank Summit Bank First Heritage Bank Total (in thousands) FDIC loss-sharing asset (liability) $ 349 $ 1,959 $ 1,577 $ (293 ) $ 3,592 Clawback liability $ 3,474 $ 1,280 $ — $ 708 $ 5,462 Non-single family covered assets $ 61,040 $ 9,366 $ 6,700 $ 12,145 $ 89,251 Single family covered assets $ 6,110 $ 18,563 $ 5,077 $ 1,645 $ 31,395 Loss-sharing expiration dates: Non-single family Expired Expired Expired Expired Single family First Quarter 2020 First Quarter 2020 Second Quarter 2021 Second Quarter 2021 Recovery-sharing expiration dates: Non-single family First Quarter 2018 First Quarter 2018 Second Quarter 2019 Second Quarter 2019 Single family First Quarter 2020 First Quarter 2020 Second Quarter 2021 Second Quarter 2021

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill and Intangible Assets	The following table sets forth activity for goodwill and other intangible assets for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 (in thousands) Goodwill Goodwill at beginning of period $ 382,762 $ 382,537 $ 382,762 $ 382,537 Provisional period adjustments — 225 — 225 Total goodwill $ 382,762 $ 382,762 $ 382,762 $ 382,762 Other intangible assets, net Core deposit intangible: Gross core deposit intangible balance at beginning of period 58,598 58,598 58,598 58,598 Accumulated amortization at beginning of period (39,006 ) (32,593 ) (35,940 ) (29,058 ) Core deposit intangible, net at beginning of period 19,592 26,005 22,658 29,540 CDI current period amortization (1,460 ) (1,695 ) (4,526 ) (5,230 ) Total core deposit intangible, net at end of period 18,132 24,310 18,132 24,310 Intangible assets not subject to amortization 919 919 919 919 Other intangible assets, net at end of period 19,051 25,229 19,051 25,229 Total goodwill and other intangible assets at end of period $ 401,813 $ 407,991 $ 401,813 $ 407,991
Estimated Future Amortization Expense of Core Deposit Intangibles	The following table provides the estimated future amortization expense of core deposit intangibles for the remaining three months ending December 31, 2016 and the succeeding four years: Amount (in thousands) Year ending December 31, 2016 $ 1,419 2017 4,913 2018 3,855 2019 2,951 2020 2,048

Derivatives and Balance Sheet29

Derivatives and Balance Sheet Offsetting (Tables)	9 Months Ended
	Sep. 30, 2016
Derivative [Line Items]
Balance Sheet Offsetting [Table Text Block]	The following tables show the gross interest rate swap agreements and repurchase agreements in the consolidated balance sheets and the respective collateral received or pledged in the form of other financial instruments, which are generally marketable securities. The collateral amounts in these tables are limited to the outstanding balances of the related asset or liability. Therefore, instances of overcollateralization are not shown. Gross Amounts of Recognized Assets/Liabilities Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts of Assets/Liabilities Presented in the Consolidated Balance Sheets Gross Amounts Not Offset in the Consolidated Balance Sheets Collateral Posted Net Amount September 30, 2016 (in thousands) Assets Interest rate contracts $ 19,803 $ — $ 19,803 $ — $ 19,803 Liabilities Interest rate contracts $ 19,841 $ — $ 19,841 $ (19,841 ) $ — Repurchase agreements $ 69,189 $ — $ 69,189 $ (69,189 ) $ — December 31, 2015 Assets Interest rate contracts $ 12,438 $ — $ 12,438 $ — $ 12,438 Liabilities Interest rate contracts $ 12,478 $ — $ 12,478 $ (12,478 ) $ — Repurchase agreements $ 99,699 $ — $ 99,699 $ (99,699 ) $ —
Carrying Value of Securities Pledged As Collateral	The following table summarizes the carrying value of securities pledged as collateral to secure public deposits, borrowings and other purposes as permitted or required by law: September 30, 2016 (in thousands) Washington and Oregon State to secure public deposits $ 235,931 Federal Reserve Bank to secure borrowings 40,877 Other securities pledged 147,336 Total securities pledged as collateral $ 424,144
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	The following table presents the fair value of derivatives not designated as hedging instruments at September 30, 2016 and December 31, 2015 : Asset Derivatives Liability Derivatives September 30, 2016 December 31, 2015 September 30, 2016 December 31, 2015 Balance Sheet Fair Value Balance Sheet Fair Value Balance Sheet Fair Value Balance Sheet Fair Value (in thousands) Interest rate contracts Other assets $ 19,803 Other assets $ 12,438 Other liabilities $ 19,841 Other liabilities $ 12,478
Available-for-sale Securities [Member]
Derivative [Line Items]
Carrying Value of Securities Pledged As Collateral	Gross Amounts of Recognized Assets/Liabilities Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts of Assets/Liabilities Presented in the Consolidated Balance Sheets Gross Amounts Not Offset in the Consolidated Balance Sheets Collateral Posted Net Amount September 30, 2016 (in thousands) Assets Interest rate contracts $ 19,803 $ — $ 19,803 $ — $ 19,803 Liabilities Interest rate contracts $ 19,841 $ — $ 19,841 $ (19,841 ) $ — Repurchase agreements $ 69,189 $ — $ 69,189 $ (69,189 ) $ — December 31, 2015 Assets Interest rate contracts $ 12,438 $ — $ 12,438 $ — $ 12,438 Liabilities Interest rate contracts $ 12,478 $ — $ 12,478 $ (12,478 ) $ — Repurchase agreements $ 99,699 $ — $ 99,699 $ (99,699 ) $ — The following table presents the class of collateral pledged for repurchase agreements as well as the remaining contractual maturity of the repurchase agreements:

Accumulated Other Comprehensi30

Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2016
Accumulated Other Comprehensive Income (Loss) [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	The following table shows changes in accumulated other comprehensive income (loss) by component for the three and nine month periods ended September 30, 2016 and 2015 : Unrealized Gains and Losses on Available-for-Sale Securities (1) Unrealized Gains and Losses on Pension Plan Liability (1) Total (1) Three months ended September 30, 2016 (in thousands) Beginning balance $ 27,280 $ (6,469 ) $ 20,811 Other comprehensive loss before reclassifications (4,049 ) — (4,049 ) Amounts reclassified from accumulated other comprehensive income (loss) (364 ) 107 (257 ) Net current-period other comprehensive income (loss) (4,413 ) 107 (4,306 ) Ending balance $ 22,867 $ (6,362 ) $ 16,505 Three months ended September 30, 2015 Beginning balance $ 4,819 $ (2,030 ) $ 2,789 Other comprehensive income before reclassifications 10,126 — 10,126 Amounts reclassified from accumulated other comprehensive income (loss) (151 ) 62 (89 ) Net current-period other comprehensive income 9,975 62 10,037 Ending balance $ 14,794 $ (1,968 ) $ 12,826 Nine months ended September 30, 2016 Beginning balance $ 386 $ (6,681 ) $ (6,295 ) Other comprehensive income before reclassifications 23,229 — 23,229 Amounts reclassified from accumulated other comprehensive income (loss) (748 ) 319 (429 ) Net current-period other comprehensive income 22,481 319 22,800 Ending balance $ 22,867 $ (6,362 ) $ 16,505 Nine months ended September 30, 2015 Beginning balance $ 7,462 $ (1,841 ) $ 5,621 Other comprehensive income (loss) before reclassifications 8,161 (280 ) 7,881 Amounts reclassified from accumulated other comprehensive income (loss) (829 ) 153 (676 ) Net current-period other comprehensive income (loss) 7,332 (127 ) 7,205 Ending balance $ 14,794 $ (1,968 ) $ 12,826 __________ (1) All amounts are net of tax. Amounts in parenthesis indicate debits.
Schedule of reclassifications from accumulated other comprehensive income [Table Text Block]	The following table shows details regarding the reclassifications from accumulated other comprehensive income (loss) for the three and nine month periods ended September 30, 2016 and 2015 : Amount Reclassified from Accumulated Other Comprehensive Income (Loss) Three Months Ended September 30, Nine Months Ended September 30, Affected line Item in the Consolidated 2016 2015 2016 2015 Statement of Income (in thousands) Unrealized gains and losses on available-for-sale securities Investment securities gains $ 572 $ 236 $ 1,174 $ 1,300 Investment securities gains, net 572 236 1,174 1,300 Total before tax (208 ) (85 ) (426 ) (471 ) Income tax provision $ 364 $ 151 $ 748 $ 829 Net of tax Amortization of pension plan liability Actuarial losses $ (167 ) $ (97 ) $ (501 ) $ (240 ) Compensation and employee benefits (167 ) (97 ) (501 ) (240 ) Total before tax 60 35 182 87 Income tax benefit $ (107 ) $ (62 ) $ (319 ) $ (153 ) Net of tax

Fair Value Accounting and Mea31

Fair Value Accounting and Measurement (Tables)	9 Months Ended
	Sep. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets And Liabilities Accounted For Fair Value On Recurring Basis	The following table sets forth the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis at September 30, 2016 and December 31, 2015 by level within the fair value hierarchy. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement: Fair value Fair Value Measurements at Reporting Date Using Level 1 Level 2 Level 3 September 30, 2016 (in thousands) Assets Securities available for sale: U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations $ 1,512,924 $ — $ 1,512,924 $ — State and municipal debt securities 503,118 — 503,118 — U.S. government agency and government-sponsored enterprise securities 338,292 — 338,292 — U.S. government securities 548 548 — — Other securities 5,202 — 5,202 — Total securities available for sale $ 2,360,084 $ 548 $ 2,359,536 $ — Other assets (Interest rate contracts) $ 19,803 $ — $ 19,803 $ — Liabilities Other liabilities (Interest rate contracts) $ 19,841 $ — $ 19,841 $ — Fair value Fair Value Measurements at Reporting Date Using Level 1 Level 2 Level 3 December 31, 2015 (in thousands) Assets Securities available for sale: U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations $ 1,286,489 $ — $ 1,286,489 $ — State and municipal debt securities 492,169 — 492,169 — U.S. government agency and government-sponsored enterprise securities 353,782 — 353,782 — U.S. government securities 20,137 20,137 — — Other securities 5,117 — 5,117 — Total securities available for sale $ 2,157,694 $ 20,137 $ 2,137,557 $ — Other assets (Interest rate contracts) $ 12,438 $ — $ 12,438 $ — Liabilities Other liabilities (Interest rate contracts) $ 12,478 $ — $ 12,478 $ —
Financial Assets Accounted For Fair Value On Nonrecurring Basis	The following tables set forth information related to the Company’s assets that were measured using fair value estimates on a nonrecurring basis during the current and prior year quarterly periods: Fair value at Fair Value Measurements at Reporting Date Using Losses During the Three Months Ended Losses During the Nine Months Ended Level 1 Level 2 Level 3 (in thousands) Impaired loans $ 2,304 $ — $ — $ 2,304 $ (647 ) $ (3,285 ) OREO 335 — — 335 (14 ) (14 ) $ 2,639 $ — $ — $ 2,639 $ (661 ) $ (3,299 ) Fair value at Fair Value Measurements at Reporting Date Using Losses During the Three Months Ended Losses During the Nine Months Ended September 30, 2015 Level 1 Level 2 Level 3 (in thousands) Impaired loans $ 350 $ — $ — $ 350 $ (1,012 ) $ (1,012 ) OREO 3,286 — — 3,286 (646 ) (662 ) $ 3,636 $ — $ — $ 3,636 $ (1,658 ) $ (1,674 )
Fair Value, by Balance Sheet Grouping	The following tables summarize carrying amounts and estimated fair values of selected financial instruments as well as assumptions used by the Company in estimating fair value at September 30, 2016 and December 31, 2015 : September 30, 2016 Carrying Fair Level 1 Level 2 Level 3 (in thousands) Assets Cash and due from banks $ 180,839 $ 180,839 $ 180,839 $ — $ — Interest-earning deposits with banks 11,225 11,225 11,225 — — Securities available for sale 2,360,084 2,360,084 548 2,359,536 — FHLB stock 12,640 12,640 — 12,640 — Loans held for sale 3,361 3,361 — 3,361 — Loans 6,189,493 6,274,917 — — 6,274,917 FDIC loss-sharing asset 3,592 594 — — 594 Interest rate contracts 19,803 19,803 — 19,803 — Liabilities Deposits $ 8,057,816 $ 8,054,970 $ 7,645,310 $ 409,660 $ — FHLB advances 66,502 67,826 — 67,826 — Repurchase agreements 69,189 69,543 — 69,543 — Interest rate contracts 19,841 19,841 — 19,841 — December 31, 2015 Carrying Fair Level 1 Level 2 Level 3 (in thousands) Assets Cash and due from banks $ 166,929 $ 166,929 $ 166,929 $ — $ — Interest-earning deposits with banks 8,373 8,373 8,373 — — Securities available for sale 2,157,694 2,157,694 20,137 2,137,557 — FHLB stock 12,722 12,722 — 12,722 — Loans held for sale 4,509 4,509 — 4,509 — Loans 5,746,855 5,752,423 — — 5,752,423 FDIC loss-sharing asset 6,568 921 — — 921 Interest rate contracts 12,438 12,438 — 12,438 — Liabilities Deposits $ 7,438,829 $ 7,434,787 $ 6,979,924 $ 454,863 $ — FHLB advances 68,531 69,176 — 69,176 — Repurchase agreements 99,699 100,346 — 100,346 — Interest rate contracts 12,478 12,478 — 12,478 —
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Assets, Quantitative Information	The range and weighted-average of the significant unobservable inputs used to fair value our Level 3 nonrecurring assets, along with the valuation techniques used, are shown in the following table: Fair value at Valuation Technique Unobservable Input Range (Weighted Average) (1) (dollars in thousands) Impaired loans - collateral-dependent (3) $ 943 Fair Market Value of Collateral Adjustment to Stated Value N/A (2) Impaired loans - other $ 1,361 Discounted Cash Flow Discount Rate 2.85% - 6.50% (3.85%) OREO $ 335 Fair Market Value of Collateral Adjustment to Appraisal Value N/A (2) (1) Discount rate used in discounted cash flow valuation. (2) Quantitative disclosures are not provided for collateral-dependent impaired loans and OREO because there were no adjustments made to the appraisal values or stated values during the current period. (3) Collateral consists of fixed assets and accounts receivable. Fair value at Valuation Technique Unobservable Input Range (Weighted Average) (1) (dollars in thousands) Impaired loans $ 350 Fair Market Value of Collateral Adjustment to Appraisal Value N/A (2) OREO $ 3,286 Fair Market Value of Collateral Adjustment to Appraisal Value N/A (2) (1) Discount applied to appraisal value, letter of intent to purchase, or stated value (in the case of accounts receivable, inventory and equipment). (2) Quantitative disclosures are not provided for impaired loans and OREO because there were no adjustments made to the appraisal value during the current period.

Earnings per Common Share (Tabl

Earnings per Common Share (Tables)	9 Months Ended
	Sep. 30, 2016
Earnings Per Share [Abstract]
Schedule of Basic and Diluted Earnings Per Share	The following table sets forth the computation of basic and diluted earnings per share for the three and nine months ended September 30, 2016 and 2015 : Three Months Ended Nine Months Ended September 30, September 30, 2016 2015 2016 2015 (in thousands except per share) Basic EPS: Net income $ 27,484 $ 25,780 $ 74,148 $ 72,087 Less: Earnings allocated to participating securities: Preferred shares 48 45 131 127 Nonvested restricted shares 378 296 953 772 Earnings allocated to common shareholders $ 27,058 $ 25,439 $ 73,064 $ 71,188 Weighted average common shares outstanding 57,215 57,051 57,173 57,007 Basic earnings per common share $ 0.47 $ 0.45 $ 1.28 $ 1.25 Diluted EPS: Earnings allocated to common shareholders (1) $ 27,058 $ 25,439 $ 73,064 $ 71,188 Weighted average common shares outstanding 57,215 57,051 57,173 57,007 Dilutive effect of equity awards 10 13 10 14 Weighted average diluted common shares outstanding 57,225 57,064 57,183 57,021 Diluted earnings per common share $ 0.47 $ 0.45 $ 1.28 $ 1.25 Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive 15 29 20 40 __________ (1) Earnings allocated to common shareholders for basic and diluted EPS may differ under the two-class method as a result of adding common stock equivalents for options and warrants to dilutive shares outstanding, which alters the ratio used to allocate earnings to common shareholders and participating securities for the purposes of calculating diluted EPS.

Securities (Securities Availabl

Securities (Securities Available for Sale) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, amortized cost	$ 2,324,721	$ 2,157,610
Available-for-sale Debt Securities Gross Unrealized Gain, instant	38,413	18,352
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(3,050)	(18,268)
Securities available for sale	2,360,084	2,157,694
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, amortized cost	1,498,158	1,296,955
Available-for-sale Debt Securities Gross Unrealized Gain, instant	17,148	4,525
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(2,382)	(14,991)
Securities available for sale	1,512,924	1,286,489
State and Municipal Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, amortized cost	487,308	480,417
Available-for-sale Debt Securities Gross Unrealized Gain, instant	16,192	12,690
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(382)	(938)
Securities available for sale	503,118	492,169
U.S. Government and Government-Sponsored Enterprise Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, amortized cost	333,423	354,515
Available-for-sale Debt Securities Gross Unrealized Gain, instant	5,009	1,113
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(140)	(1,846)
Securities available for sale	338,292	353,782
US Government Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, amortized cost	548	20,439
Available-for-sale Debt Securities Gross Unrealized Gain, instant	0	0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	0	(302)
Securities available for sale	548	20,137
Other Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, amortized cost	5,284	5,284
Available-for-sale Debt Securities Gross Unrealized Gain, instant	64	24
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(146)	(191)
Securities available for sale	$ 5,202	$ 5,117

Securities (Schedule of Contrac

Securities (Schedule of Contractual Maturities of Investment Securities Available for Sale) (Details) $ in Thousands	Sep. 30, 2016USD ($)
Available-for-sale Securities [Abstract]
Due within one year, Amortized Cost	$ 28,765
Due after one year through five years, Amortized Cost	484,206
Due after five years through ten years, Amortized Cost	688,715
Due after ten years, Amortized Cost	1,117,751
No stated maturity date, Amortized Cost Basis	5,284
Total investment securities available-for-sale, Amortized Cost	2,324,721
Due within one year, Fair Value	28,874
Due after one year through five years, Fair Value	493,479
Due after five years through ten years, Fair Value	703,388
Due after ten years, Fair Value	1,129,141
No stated maturity date, Fair Value	5,202
Total investment securities available-for-sale, Fair Value	$ 2,360,084

Securities (Carrying Value of S

Securities (Carrying Value of Securities Pledged as Collateral) (Details) $ in Thousands	Sep. 30, 2016USD ($)
Schedule of Available-for-sale Securities [Line Items]
Carrying amount of securities pledged as collateral	$ 424,144
Washington and Oregon State Public Deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Carrying amount of securities pledged as collateral	235,931
Federal Reserve Bank Advances [Member]
Schedule of Available-for-sale Securities [Line Items]
Carrying amount of securities pledged as collateral	40,877
Other Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Carrying amount of securities pledged as collateral	$ 147,336

Securities (Summary of Gross Un

Securities (Summary of Gross Unrealized Losses and Fair Value of the Investments with Unrealized Losses) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities Gross Unrealized Gain, instant	$ 38,413	$ 18,352
Less than 12 Months Fair Value	234,538	918,813
Less than 12 Months Unrealized Losses	(1,025)	(9,247)
12 Months or More Fair Value	170,158	298,316
12 Months or More Unrealized Losses	(2,025)	(9,021)
Total Fair Value	404,696	1,217,129
Total Unrealized Losses	(3,050)	(18,268)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	3,050	18,268
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities Gross Unrealized Gain, instant	17,148	4,525
Less than 12 Months Fair Value	176,508	664,509
Less than 12 Months Unrealized Losses	(548)	(7,610)
12 Months or More Fair Value	163,859	214,325
12 Months or More Unrealized Losses	(1,834)	(7,381)
Total Fair Value	340,367	878,834
Total Unrealized Losses	(2,382)	(14,991)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	2,382	14,991
State and Municipal Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities Gross Unrealized Gain, instant	16,192	12,690
Less than 12 Months Fair Value	35,915	48,261
Less than 12 Months Unrealized Losses	(337)	(358)
12 Months or More Fair Value	3,489	31,383
12 Months or More Unrealized Losses	(45)	(580)
Total Fair Value	39,404	79,644
Total Unrealized Losses	(382)	(938)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	382	938
US Government Corporations and Agencies Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities Gross Unrealized Gain, instant	5,009	1,113
Less than 12 Months Fair Value	22,115	193,400
Less than 12 Months Unrealized Losses	(140)	(1,128)
12 Months or More Fair Value	0	40,034
12 Months or More Unrealized Losses	0	(718)
Total Fair Value	22,115	233,434
Total Unrealized Losses	(140)	(1,846)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	140	1,846
US Government Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities Gross Unrealized Gain, instant	0	0
Less than 12 Months Fair Value		10,343
Less than 12 Months Unrealized Losses		(136)
12 Months or More Fair Value		9,794
12 Months or More Unrealized Losses		(166)
Total Fair Value		20,137
Total Unrealized Losses		(302)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	0	302
Other Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities Gross Unrealized Gain, instant	64	24
Less than 12 Months Fair Value	0	2,300
Less than 12 Months Unrealized Losses	0	(15)
12 Months or More Fair Value	2,810	2,780
12 Months or More Unrealized Losses	(146)	(176)
Total Fair Value	2,810	5,080
Total Unrealized Losses	(146)	(191)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	$ 146	$ 191

Securities (Narrative) (Details

Securities (Narrative) (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016USD ($)security	Sep. 30, 2015USD ($)	Sep. 30, 2016USD ($)security	Sep. 30, 2015USD ($)
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds | $	$ 37.4	$ 10.6	$ 120.8	$ 82.8
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	83		83
Number Of Securities In Continuous Loss Position For Twelve Months or More	46		46
Municipal Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	35		35
Number Of Securities In Continuous Loss Position For Twelve Months or More	5		5
U.S. Government and Government-Sponsored Enterprise Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	5		5
Number Of Securities In Continuous Loss Position For Twelve Months or More	0		0
Other Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	1		1
Number Of Securities In Continuous Loss Position For Twelve Months or More	1		1

Securities Securities (Summary

Securities Securities (Summary of Gross Realized Gains and Gross Realized Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Available-for-sale Securities, Gross Realized Gains	$ 572	$ 236	$ 1,174	$ 1,310
Available-for-sale Securities, Gross Realized Losses	0	0	0	(10)
Investment securities gains, net	$ 572	$ 236	$ 1,174	$ 1,300

Loans (Narrative) (Details)

Loans (Narrative) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2016USD ($)contract	Dec. 31, 2015USD ($)
Financing Receivable, Recorded Investment [Line Items]
Loans to related parties	$ 10,100	$ 10,000
Loans and Leases Receivable, Related Parties, Additions	759
Repayments on related party loans	$ 652
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract	0
Loans Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	$ 2,300,000	2,220,000
Federal Reserve Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	$ 50,000	$ 50,100

Loans (Analysis of Loan Portfol

Loans (Analysis of Loan Portfolio by Major Types of Loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Less: unearned income on loans	$ (36,236)		$ (42,373)
Recorded Investment	6,259,757		5,815,027
Allowance for loan losses	(70,264)	$ (69,304)	(68,172)	$ (69,049)	$ (69,257)	$ (69,569)
Loans, net	6,189,493		5,746,855
Loans held for sale	3,361		4,509
Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Less: unearned income on loans	(36,236)		(42,373)
Recorded Investment	6,106,993		5,634,121
Allowance for loan losses	(58,762)		(54,446)
Loans, net	6,048,231		5,579,675
Loans held for sale	3,361		4,509
Loans and Leases Receivable, Gross	6,106,993		5,634,121
Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Less: unearned income on loans	0		0
Recorded Investment	152,764		180,906
Allowance for loan losses	(11,502)		(13,726)
Loans, net	141,262		167,180
Loans held for sale	0		0
Loans and Leases Receivable, Gross	165,094		197,350
Acquisition Accounting Valuation Discount on Covered Loans	12,330		16,444
Commercial and Multifamily Residential Construction [Domain] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	1,754		1,834
One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Consumer, Mortgage	187,889		200,233
Loans and Leases Receivable, Gross, Consumer, Construction	131,030		138,152
Allowance for loan losses	(977)	(675)	(916)	(1,196)	(1,355)	(2,281)
One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Consumer, Mortgage	168,511		176,295
Loans and Leases Receivable, Gross, Consumer, Construction	130,163		135,874
Loans and Leases Receivable, Gross	165,940		173,436
One-to-Four Family Residential [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Consumer, Mortgage	19,378		23,938
Loans and Leases Receivable, Gross, Consumer, Construction	867		2,278
Loans and Leases Receivable, Gross	22,227		27,195
Commercial and Multifamily Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Gross, Commercial, Mortgage	2,779,400		2,591,125
Loans Receivable, Gross, Commercial, Construction	203,597		169,043
Commercial and Multifamily Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Gross, Commercial, Mortgage	2,686,783		2,491,736
Loans Receivable, Gross, Commercial, Construction	202,014		167,413
Commercial and Multifamily Residential [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Gross, Commercial, Mortgage	92,617		99,389
Loans Receivable, Gross, Commercial, Construction	1,583		1,630
Loans and Leases Receivable, Gross	98,178		106,308
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Gross, Commercial and Industrial	2,652,575		2,397,423
Commercial Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Gross, Commercial and Industrial	2,630,017		2,362,575
Commercial Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Gross, Commercial and Industrial	22,558		34,848
Loans and Leases Receivable, Gross	24,436		38,784
Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Real Estate Mortgage	2,967,289		2,791,358
Real Estate Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Real Estate Mortgage	2,855,294		2,668,031
Real Estate Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Real Estate Mortgage	111,995		123,327
Loans and Leases Receivable, Gross	120,405		133,503
One-to-Four Family Residential Construction [Domain] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	867		2,326
Real Estate Construction Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Real Estate Construction	334,627		307,195
Real Estate Construction Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Real Estate Construction	332,177		303,287
Real Estate Construction Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Real Estate Construction	2,450		3,908
Loans and Leases Receivable, Gross	2,621		4,160
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Consumer	341,502		361,424
Allowance for loan losses	(3,743)	$ (3,559)	(3,531)	$ (3,217)	$ (3,182)	$ (3,180)
Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Consumer	325,741		342,601
Loans and Leases Receivable, Gross	319,875		332,362
Consumer Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Consumer	15,761		18,823
Loans and Leases Receivable, Gross	$ 17,632		$ 20,903

Loans (Analysis of Nonaccrual L

Loans (Analysis of Nonaccrual Loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	$ 21,366	$ 21,464
Unpaid Principal Balance Nonaccrual Loans	35,652	32,263
Secured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	9,466	9,395
Unpaid Principal Balance Nonaccrual Loans	19,689	15,688
Unsecured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	36	42
Unpaid Principal Balance Nonaccrual Loans	216	256
One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	579	820
Unpaid Principal Balance Nonaccrual Loans	1,303	1,866
Commercial Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	934	349
Unpaid Principal Balance Nonaccrual Loans	922	332
Income Property Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	1,957	2,843
Unpaid Principal Balance Nonaccrual Loans	2,177	3,124
Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	4,161	6,321
Unpaid Principal Balance Nonaccrual Loans	6,842	8,943
Land And Acquisition [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	0	362
Unpaid Principal Balance Nonaccrual Loans	0	385
Residential Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	461	566
Unpaid Principal Balance Nonaccrual Loans	461	679
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	3,772	766
Unpaid Principal Balance Nonaccrual Loans	$ 4,042	$ 990

Loans (Analysis of the Aged Loa

Loans (Analysis of the Aged Loan Portfolio) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	$ 21,366	$ 21,464
Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	6,079,530	5,592,208
Past Due Loans	6,097	20,449
Nonaccrual Loans	21,366	21,464
Loans Receivable, Net	6,106,993	5,634,121
Secured Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	9,466	9,395
Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	2,515,042	2,241,069
Past Due Loans	3,151	12,228
Nonaccrual Loans	9,466	9,395
Loans Receivable, Net	2,527,659	2,262,692
Unsecured Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	36	42
Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	97,496	94,867
Past Due Loans	5	39
Nonaccrual Loans	36	42
Loans Receivable, Net	97,537	94,948
One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	579	820
One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	164,927	170,913
Past Due Loans	434	1,703
Nonaccrual Loans	579	820
Loans Receivable, Net	165,940	173,436
Commercial Land [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	934	349
Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	238,887	212,740
Past Due Loans	200	69
Nonaccrual Loans	934	349
Loans Receivable, Net	240,021	213,158
Income Property Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	1,957	2,843
Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	1,376,735	1,305,502
Past Due Loans	90	2,434
Nonaccrual Loans	1,957	2,843
Loans Receivable, Net	1,378,782	1,310,779
Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	4,161	6,321
Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	1,043,376	939,396
Past Due Loans	58	599
Nonaccrual Loans	4,161	6,321
Loans Receivable, Net	1,047,595	946,316
Land And Acquisition [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	0	362
Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	11,933	14,388
Past Due Loans	119	0
Nonaccrual Loans	0	362
Loans Receivable, Net	12,052	14,750
Residential Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	461	566
Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	116,327	119,809
Past Due Loans	518	0
Nonaccrual Loans	461	566
Loans Receivable, Net	117,306	120,375
Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	89,373	83,634
Past Due Loans	0	0
Nonaccrual Loans	0	0
Loans Receivable, Net	89,373	83,634
Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	110,853	81,671
Past Due Loans	0	0
Nonaccrual Loans	0	0
Loans Receivable, Net	110,853	81,671
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	3,772	766
Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	314,581	328,219
Past Due Loans	1,522	3,377
Nonaccrual Loans	3,772	766
Loans Receivable, Net	319,875	332,362
Financing Receivables, 60 to 89 Days Past Due [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	2,021	2,147
Financing Receivables, 60 to 89 Days Past Due [Member] | Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	609	617
Financing Receivables, 60 to 89 Days Past Due [Member] | Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	34	66
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	200	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	684
Financing Receivables, 60 to 89 Days Past Due [Member] | Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	305	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	873	780
Financing Receivables, 30 to 59 Days Past Due [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	4,076	18,302
Financing Receivables, 30 to 59 Days Past Due [Member] | Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	2,542	11,611
Financing Receivables, 30 to 59 Days Past Due [Member] | Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	5	39
Financing Receivables, 30 to 59 Days Past Due [Member] | One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	400	1,637
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	69
Financing Receivables, 30 to 59 Days Past Due [Member] | Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	90	1,750
Financing Receivables, 30 to 59 Days Past Due [Member] | Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	58	599
Financing Receivables, 30 to 59 Days Past Due [Member] | Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	119	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	213	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	649	2,597
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	$ 0	$ 0

Loans (Analysis of Impaired Loa

Loans (Analysis of Impaired Loans) (Details) - Loans, Excluding Purchased Credit Impaired Loans [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	$ 6,088,745		$ 6,088,745		$ 5,618,041
Recorded Investment of Loans Individually Measured for Specific Impairment	18,248		18,248		16,080
Recorded Investment	13,160		13,160		14,726
Unpaid Principal Balance	22,531		22,531		19,547
Related Allowance	1,300		1,300		653
Average Recorded Investment Impaired Loans	18,556	$ 20,293	20,502	$ 23,946
Interest Recognized on Impaired Loans	54	91	125	612
Secured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	2,520,876		2,520,876		2,257,168
Recorded Investment of Loans Individually Measured for Specific Impairment	6,783		6,783		5,524
Recorded Investment	1,208		1,208		690
Unpaid Principal Balance	1,277		1,277		718
Related Allowance	873		873		321
Average Recorded Investment Impaired Loans	6,909	6,507	9,506	8,602
Interest Recognized on Impaired Loans	15	3	48	10
Unsecured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	97,537		97,537		94,948
Recorded Investment of Loans Individually Measured for Specific Impairment	0		0		0
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Average Recorded Investment Impaired Loans	0	0	0	1
Interest Recognized on Impaired Loans	0	0	0	0
One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	165,394		165,394		172,150
Recorded Investment of Loans Individually Measured for Specific Impairment	546		546		1,286
Recorded Investment	358		358		314
Unpaid Principal Balance	591		591		339
Related Allowance	353		353		314
Average Recorded Investment Impaired Loans	617	3,315	796	3,238
Interest Recognized on Impaired Loans	5	11	8	35
Commercial Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	239,313		239,313		213,158
Recorded Investment of Loans Individually Measured for Specific Impairment	708		708		0
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Average Recorded Investment Impaired Loans	708	0	354	118
Interest Recognized on Impaired Loans	0	0	0	0
Income Property Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	1,376,349		1,376,349		1,308,673
Recorded Investment of Loans Individually Measured for Specific Impairment	2,433		2,433		2,106
Recorded Investment	546		546		0
Unpaid Principal Balance	551		551		0
Related Allowance	28		28		0
Average Recorded Investment Impaired Loans	1,939	2,061	2,010	3,114
Interest Recognized on Impaired Loans	8	10	19	27
Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	1,043,849		1,043,849		940,261
Recorded Investment of Loans Individually Measured for Specific Impairment	3,746		3,746		6,055
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Average Recorded Investment Impaired Loans	4,486	6,665	5,001	7,302
Interest Recognized on Impaired Loans	0	65	0	533
Land And Acquisition [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	11,950		11,950		14,283
Recorded Investment of Loans Individually Measured for Specific Impairment	102		102		467
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Average Recorded Investment Impaired Loans	103	825	245	685
Interest Recognized on Impaired Loans	1	1	4	4
Residential Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	116,970		116,970		119,813
Recorded Investment of Loans Individually Measured for Specific Impairment	336		336		562
Recorded Investment	0		0		335
Unpaid Principal Balance	0		0		335
Related Allowance	0		0		3
Average Recorded Investment Impaired Loans	449	893	506	670
Interest Recognized on Impaired Loans	0	0	0	0
Income Property Multifamily Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	89,373		89,373		83,634
Recorded Investment of Loans Individually Measured for Specific Impairment	0		0		0
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Owner Occupied Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	110,853		110,853		81,671
Recorded Investment of Loans Individually Measured for Specific Impairment	0		0		0
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	316,281		316,281		332,282
Recorded Investment of Loans Individually Measured for Specific Impairment	3,594		3,594		80
Recorded Investment	2,976		2,976		15
Unpaid Principal Balance	3,010		3,010		15
Related Allowance	46		46		15
Average Recorded Investment Impaired Loans	3,345	27	2,084	216
Interest Recognized on Impaired Loans	25	$ 1	46	$ 3
Impaired Loans With Recorded Allowance [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	5,088		5,088		1,354
Unpaid Principal Balance	5,429		5,429		1,407
Impaired Loans Without Recorded Allowance [Member] | Secured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	5,575		5,575		4,834
Unpaid Principal Balance	11,840		11,840		6,455
Impaired Loans Without Recorded Allowance [Member] | Unsecured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Impaired Loans Without Recorded Allowance [Member] | One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	188		188		972
Unpaid Principal Balance	402		402		1,397
Impaired Loans Without Recorded Allowance [Member] | Commercial Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	708		708		0
Unpaid Principal Balance	687		687		0
Impaired Loans Without Recorded Allowance [Member] | Income Property Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	1,887		1,887		2,106
Unpaid Principal Balance	2,124		2,124		2,311
Impaired Loans Without Recorded Allowance [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	3,746		3,746		6,055
Unpaid Principal Balance	6,340		6,340		8,528
Impaired Loans Without Recorded Allowance [Member] | Land And Acquisition [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	102		102		467
Unpaid Principal Balance	102		102		490
Impaired Loans Without Recorded Allowance [Member] | Residential Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	336		336		227
Unpaid Principal Balance	336		336		227
Impaired Loans Without Recorded Allowance [Member] | Income Property Multifamily Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Impaired Loans Without Recorded Allowance [Member] | Owner Occupied Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Impaired Loans Without Recorded Allowance [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	618		618		65
Unpaid Principal Balance	$ 700		$ 700		$ 139

Loans Loans (Analysis of Troubl

Loans Loans (Analysis of Troubled Debt Restructurings) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016USD ($)Modifications	Sep. 30, 2015USD ($)Modifications	Sep. 30, 2016USD ($)Modifications	Sep. 30, 2015USD ($)Modifications	Dec. 31, 2015USD ($)
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Additional Commitment To Lend	$ 51		$ 51		$ 0
Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Modifications	13	4	38	5
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 906	$ 2,903	$ 5,560	$ 2,933
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 906	$ 2,903	$ 5,560	$ 2,933
Loans, Excluding Purchased Credit Impaired Loans [Member] | Secured Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Modifications	2	4	7	4
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 90	$ 2,903	$ 1,753	$ 2,903
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 90	$ 2,903	$ 1,753	$ 2,903
Loans, Excluding Purchased Credit Impaired Loans [Member] | One-to-Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Modifications	1	0	2	1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 85	$ 0	$ 115	$ 30
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 85	$ 0	$ 115	$ 30
Loans, Excluding Purchased Credit Impaired Loans [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Modifications			1	0
Financing Receivable, Modifications, Pre-Modification Recorded Investment			$ 250	$ 0
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 250	$ 0
Loans, Excluding Purchased Credit Impaired Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Modifications	10	0	28	0
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 731	$ 0	$ 3,442	$ 0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 731	$ 0	$ 3,442	$ 0

Loans Loans (Analysis of Purcha

Loans Loans (Analysis of Purchased Credit Impaired Loans - Accretable Yield Rollforward) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014
Loans, Analysis of Purchased Credit Impaired Loans, Accretable Yield Rollforward [Abstract]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield	$ 48,863	$ 62,840	$ 48,863	$ 62,840	$ 52,909	$ 58,981	$ 67,283	$ 73,849
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion	4,902	5,049	12,905	17,105
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Disposals of Loans	178	(256)	157	1,796
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference	$ 1,034	$ 350	$ 2,944	$ 7,892

Allowance for Loan and Lease 46

Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision for loan and lease losses	$ 1,866	$ 2,831	$ 10,760	$ 6,242
Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of unallocated loan amount			5.00%

Allowance for Loan and Lease 47

Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Allowance for Loan and Lease Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 69,304	$ 69,257	$ 68,172	$ 69,569
Charged-offs	(4,604)	(6,277)	(17,743)	(18,315)
Recoveries	3,698	3,238	9,075	11,553
Provision for loan and lease losses	1,866	2,831	10,760	6,242
Ending balance	70,264	69,049	70,264	69,049
Specific Reserve	1,300	1,199	1,300	1,199
General Allocation	68,964	67,850	68,964	67,850
Secured Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	31,808	27,708	32,321	25,923
Charged-offs	(2,128)	(2,439)	(8,798)	(5,847)
Recoveries	787	530	2,126	1,242
Provision for loan and lease losses	2,008	5,189	6,826	9,670
Ending balance	32,475	30,988	32,475	30,988
Specific Reserve	873	1,020	873	1,020
General Allocation	31,602	29,968	31,602	29,968
Unsecured Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,265	857	1,299	927
Charged-offs	(31)	(131)	(75)	(235)
Recoveries	67	93	143	208
Provision for loan and lease losses	(128)	471	(194)	390
Ending balance	1,173	1,290	1,173	1,290
Specific Reserve	0	0	0	0
General Allocation	1,173	1,290	1,173	1,290
One-to-Four Family Residential [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	675	1,355	916	2,281
Charged-offs	0	0	(35)	(297)
Recoveries	81	261	142	288
Provision for loan and lease losses	221	(420)	(46)	(1,076)
Ending balance	977	1,196	977	1,196
Specific Reserve	353	84	353	84
General Allocation	624	1,112	624	1,112
Commercial Land [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,422	1,581	1,178	799
Charged-offs	0	0	(26)	0
Recoveries	0	130	2	130
Provision for loan and lease losses	92	123	360	905
Ending balance	1,514	1,834	1,514	1,834
Specific Reserve	0	0	0	0
General Allocation	1,514	1,834	1,514	1,834
Income Property Multifamily [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	8,046	8,197	6,616	9,159
Charged-offs	0	(83)	0	(126)
Recoveries	10	273	191	3,532
Provision for loan and lease losses	149	22	1,398	(4,156)
Ending balance	8,205	8,409	8,205	8,409
Specific Reserve	28	0	28	0
General Allocation	8,177	8,409	8,177	8,409
Owner Occupied [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	6,336	5,801	5,550	5,007
Charged-offs	0	(115)	0	(115)
Recoveries	10	14	26	36
Provision for loan and lease losses	487	473	1,257	1,245
Ending balance	6,833	6,173	6,833	6,173
Specific Reserve	0	17	0	17
General Allocation	6,833	6,156	6,833	6,156
Land And Acquisition [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	587	497	339	1,197
Charged-offs	0	0	0	0
Recoveries	2	98	55	101
Provision for loan and lease losses	(134)	(206)	61	(909)
Ending balance	455	389	455	389
Specific Reserve	0	64	0	64
General Allocation	455	325	455	325
Residential Construction [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,376	958	733	1,860
Charged-offs	0	0	0	0
Recoveries	19	7	225	40
Provision for loan and lease losses	(393)	(250)	44	(1,185)
Ending balance	1,002	715	1,002	715
Specific Reserve	0	0	0	0
General Allocation	1,002	715	1,002	715
Income Property Multifamily Construction [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	904	407	388	622
Charged-offs	0	0	0	0
Recoveries	107	2	109	7
Provision for loan and lease losses	(480)	(68)	34	(288)
Ending balance	531	341	531	341
Specific Reserve	0	0	0	0
General Allocation	531	341	531	341
Owner Occupied Construction [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,384	441	1,006	434
Charged-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for loan and lease losses	57	(31)	435	(24)
Ending balance	1,441	410	1,441	410
Specific Reserve	0	0	0	0
General Allocation	1,441	410	1,441	410
Consumer Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	3,559	3,182	3,531	3,180
Charged-offs	(383)	(311)	(983)	(1,521)
Recoveries	399	297	765	707
Provision for loan and lease losses	168	49	430	851
Ending balance	3,743	3,217	3,743	3,217
Specific Reserve	46	14	46	14
General Allocation	3,697	3,203	3,697	3,203
Purchased Credit Impaired Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	11,781	16,174	13,726	16,336
Charged-offs	(2,062)	(3,198)	(7,826)	(10,174)
Recoveries	2,216	1,533	5,291	5,262
Provision for loan and lease losses	(433)	(519)	311	2,566
Ending balance	11,502	13,990	11,502	13,990
Specific Reserve	0	0	0	0
General Allocation	11,502	13,990	11,502	13,990
Unallocated Financing Receivables [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	161	2,099	569	1,844
Charged-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for loan and lease losses	252	(2,002)	(156)	(1,747)
Ending balance	413	97	413	97
Specific Reserve	0	0	0	0
General Allocation	$ 413	$ 97	$ 413	$ 97

Allowance for Loan and Lease 48

Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Changes in the Allowance for Unfunded Commitments and Letters of Credit) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Allowance For Loan And Lease Losses And Unfunded Loan Commitments And Letters Of Credit
Beginning balance	$ 2,780	$ 2,930	$ 2,930	$ 2,655
Allowance for Loan and Lease Losses, Net Changes In Unfunded Commitments and Letters Of Credit Allowance	125	0	(25)	275
Ending balance	$ 2,905	$ 2,930	$ 2,905	$ 2,930

Allowance for Loan and Lease 49

Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Analysis of Credit Quality of the Loan Portfolio) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	$ 70,264	$ 69,304	$ 68,172	$ 69,049	$ 69,257	$ 69,569
Loans, net	6,189,493		5,746,855
Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	6,106,993		5,634,121
Less: allowance for loan and lease losses	58,762		54,446
Loans, net	6,048,231		5,579,675
Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	165,094		197,350
Acquisition Accounting Valuation Discount on Purchased Credit Impaired Loans	12,330		16,444
Less: allowance for loan and lease losses	11,502		13,726
Loans, net	141,262		167,180
Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	5,930,483		5,461,639
Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	156,533		178,904
Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	77,789		80,599
Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	94		362
Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	98,721		91,883
Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	8,467		18,084
Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Secured Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	32,475	31,808	32,321	30,988	27,708	25,923
Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	2,527,659		2,262,692
Secured Loans [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	23,705		37,564
Secured Loans [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	2,417,653		2,146,729
Secured Loans [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	21,420		31,468
Secured Loans [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	48,462		59,746
Secured Loans [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	94		101
Secured Loans [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	61,544		56,217
Secured Loans [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	2,191		5,995
Secured Loans [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Secured Loans [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Secured Loans [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Secured Loans [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Unsecured Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	1,173	1,265	1,299	1,290	857	927
Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	97,537		94,948
Unsecured Loans [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	731		1,220
Unsecured Loans [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	96,402		93,347
Unsecured Loans [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	731		1,218
Unsecured Loans [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	800		278
Unsecured Loans [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Unsecured Loans [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	335		1,323
Unsecured Loans [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		2
Unsecured Loans [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Unsecured Loans [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Unsecured Loans [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Unsecured Loans [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
One-to-Four Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	977	675	916	1,196	1,355	2,281
One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	165,940		173,436
One-to-Four Family Residential [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	22,227		27,195
One-to-Four Family Residential [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	164,102		171,945
One-to-Four Family Residential [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	20,996		25,018
One-to-Four Family Residential [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	458		52
One-to-Four Family Residential [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
One-to-Four Family Residential [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,380		1,439
One-to-Four Family Residential [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,231		2,177
One-to-Four Family Residential [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
One-to-Four Family Residential [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
One-to-Four Family Residential [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
One-to-Four Family Residential [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Commercial Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	1,514	1,422	1,178	1,834	1,581	799
Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	240,021		213,158
Commercial Land [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	8,137		8,898
Commercial Land [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	233,795		207,768
Commercial Land [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	7,745		8,234
Commercial Land [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	5,276		4,966
Commercial Land [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Commercial Land [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	950		424
Commercial Land [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	392		664
Commercial Land [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Commercial Land [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Commercial Land [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Commercial Land [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	8,205	8,046	6,616	8,409	8,197	9,159
Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,378,782		1,310,779
Income Property Multifamily [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	33,926		42,342
Income Property Multifamily [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,354,651		1,296,043
Income Property Multifamily [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	31,481		36,426
Income Property Multifamily [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	17,048		5,889
Income Property Multifamily [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	7,083		8,847
Income Property Multifamily [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	2,445		5,916
Income Property Multifamily [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	6,833	6,336	5,550	6,173	5,801	5,007
Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,047,595		946,316
Owner Occupied [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	56,115		55,068
Owner Occupied [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,027,356		918,986
Owner Occupied [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	54,471		53,071
Owner Occupied [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	5,745		9,668
Owner Occupied [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		261
Owner Occupied [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	14,494		17,662
Owner Occupied [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,644		1,736
Owner Occupied [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Owner Occupied [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Owner Occupied [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Owner Occupied [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Land And Acquisition [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	455	587	339	389	497	1,197
Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	12,052		14,750
Land And Acquisition [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	867		1,565
Land And Acquisition [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	12,052		14,388
Land And Acquisition [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	767		1,086
Land And Acquisition [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Land And Acquisition [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Land And Acquisition [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		362
Land And Acquisition [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	100		479
Land And Acquisition [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Land And Acquisition [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Land And Acquisition [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Land And Acquisition [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Residential Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	1,002	1,376	733	715	958	1,860
Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	117,306		120,375
Residential Construction [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		761
Residential Construction [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	116,187		119,243
Residential Construction [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		427
Residential Construction [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Residential Construction [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Residential Construction [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,119		1,132
Residential Construction [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		334
Residential Construction [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Residential Construction [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Residential Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Residential Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	531	904	388	341	407	622
Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	89,373		83,634
Income Property Multifamily Construction [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,239		1,303
Income Property Multifamily Construction [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	89,373		83,634
Income Property Multifamily Construction [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,239		1,303
Income Property Multifamily Construction [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily Construction [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily Construction [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily Construction [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily Construction [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily Construction [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Owner Occupied Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	1,441	1,384	1,006	410	441	434
Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	110,853		81,671
Owner Occupied Construction [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	515		531
Owner Occupied Construction [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	106,310		81,270
Owner Occupied Construction [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	515		531
Owner Occupied Construction [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Owner Occupied Construction [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Owner Occupied Construction [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	4,543		401
Owner Occupied Construction [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Owner Occupied Construction [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Owner Occupied Construction [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Owner Occupied Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Owner Occupied Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	3,743	$ 3,559	3,531	$ 3,217	$ 3,182	$ 3,180
Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	319,875		332,362
Consumer Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	17,632		20,903
Consumer Portfolio Segment [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	312,602		328,286
Consumer Portfolio Segment [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	17,168		20,122
Consumer Portfolio Segment [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Consumer Portfolio Segment [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Consumer Portfolio Segment [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	7,273		4,076
Consumer Portfolio Segment [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	464		781
Consumer Portfolio Segment [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Consumer Portfolio Segment [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Consumer Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Consumer Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	$ 0		$ 0

Other Real Estate Owned (Summar

Other Real Estate Owned (Summary of Other Real Estate Owned) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Other Real Estate Owned [Line Items]
Balance, beginning of period	$ 10,613	$ 20,617	$ 13,738	$ 22,190
Transfers in	891	915	1,202	8,751
Valuation adjustments	(14)	(664)	(290)	(1,457)
Proceeds from Sale of OREO Property	2,569	1,675	5,845	13,283
Gain on sale of OREO, net	73	263	189	3,255
Total OREO, end of period	8,994	$ 19,456	8,994	$ 19,456
Mortgage Loans in Process of Foreclosure, Amount	876		876
One-to-Four Family Residential [Member]
Other Real Estate Owned [Line Items]
Total OREO, end of period	$ 604		$ 604

Covered Assets and FDIC Loss-51

Covered Assets and FDIC Loss-sharing Asset (Narrative) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2016USD ($)
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Amount of Estimated Clawback Liability	$ 5,462
Payment Of Clawback If Losses Less Than Stated Levels, Period After Acquisition	10 years 45 days
Federal deposit insurance corporation loss-sharing indemnified assets	$ 3,200
Federal deposit insurance corporation loss-sharing indemnified assets receivable	$ 438
Maximum [Member]
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Loss Sharing Agreement Effective Years	10 years
Loss Recovery Provision Effective Years	10 years
Minimum [Member]
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Loss Sharing Agreement Effective Years	5 years
Loss Recovery Provision Effective Years	8 years
Covered Loans [Member]
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Percentage of loss shared by FDIC	80.00%
FDIC Percentage Of Loss Recoveries	80.00%
Percentage of loss shared by FDIC When Loss Share Thresholds Met	95.00%
Percentage Of Loss Recoveries Shared By FDIC When Loss Share Thresholds Met	95.00%

Covered Assets and FDIC Loss-52

Covered Assets and FDIC Loss-sharing Asset (FDIC Loss-sharing Asset) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Balance at beginning of period	$ 4,266	$ 9,344	$ 6,568	$ 15,174
Cash (received from) paid to the FDIC, net	20	799	(23)	(2,723)
FDIC reimbursable losses, net	(590)	(362)	(756)	(1,326)
Amortization, net	(315)	(1,416)	(2,530)	(5,086)
Loan impairment (recapture)	266	(119)	393	1,413
Sale of other real estate	(49)	(126)	71	(753)
Valuation adjustments of other real estate owned	0	25	(22)	1,148
Other	6	(1)	109	(299)
Balance at end of period	3,592	$ 8,146	3,592	$ 8,146
Amount of Estimated Clawback Liability	5,462		5,462
Non-Single Family Covered Assets	89,251		89,251
Single Family Covered Assets	31,395		31,395
Columbia River Bank [Member]
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Balance at end of period	349		349
Amount of Estimated Clawback Liability	3,474		3,474
Non-Single Family Covered Assets	61,040		61,040
Single Family Covered Assets	6,110		6,110
American Marine Bank [Member]
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Balance at end of period	1,959		1,959
Amount of Estimated Clawback Liability	1,280		1,280
Non-Single Family Covered Assets	9,366		9,366
Single Family Covered Assets	18,563		18,563
Summit Bank [Member]
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Balance at end of period	1,577		1,577
Amount of Estimated Clawback Liability	0		0
Non-Single Family Covered Assets	6,700		6,700
Single Family Covered Assets	5,077		5,077
First Heritage Bank [Member]
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Balance at end of period	(293)		(293)
Amount of Estimated Clawback Liability	708		708
Non-Single Family Covered Assets	12,145		12,145
Single Family Covered Assets	$ 1,645		$ 1,645

Goodwill and Intangible Asset53

Goodwill and Intangible Assets (Schedule of Goodwill and Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014
Goodwill and Intangible Assets [Roll Forward]
Total goodwill, beginning of period	$ 382,762	$ 382,537	$ 382,762	$ 382,537
Goodwill, Purchase Accounting Adjustments	0	225	0	225
Total goodwill, end of period	382,762	382,762	382,762	382,762
CDI current period amortization	(1,460)	(1,695)	(4,526)	(5,230)
Indefinite-Lived Intangible Assets (Excluding Goodwill)	919	919	919	919
Other intangible assets, net	19,051	25,229	19,051	25,229		$ 23,577
Total goodwill and intangible assets, end of period	401,813	407,991	$ 401,813	407,991
Core Deposits [Member]
Goodwill and Intangible Assets [Line Items]
Estimated life of CDI, in years			10 years
Goodwill and Intangible Assets [Roll Forward]
Gross core deposit intangible balance, beginning of period					$ 58,598	58,598	$ 58,598	$ 58,598
Accumulated amortization at beginning of period					$ (39,006)	$ (35,940)	$ (32,593)	$ (29,058)
Core deposit intangible, net, beginning of period	19,592	26,005	$ 22,658	29,540
CDI current period amortization	(1,460)	(1,695)	(4,526)	(5,230)
Total core deposit intangible, end of period	$ 18,132	$ 24,310	$ 18,132	$ 24,310

Goodwill and Intangible Asset54

Goodwill and Intangible Assets (Estimated Future Amortization Expense of Core Deposit Intangibles) (Details) $ in Thousands	Sep. 30, 2016USD ($)
Future Amortization Expense For Core Deposit Intangibles
2,016	$ 1,419
2,017	4,913
2,018	3,855
2,019	2,951
2,020	$ 2,048

Derivatives and Balance Sheet55

Derivatives and Balance Sheet Offsetting (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Derivative [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax	$ 9	$ (6)	$ 2	$ (2)
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement	69,189		69,189
Secured Borrowings, Gross, Difference, Amount	0		0
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Derivative [Line Items]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement	69,189		69,189
Maturity Overnight [Member] | U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Derivative [Line Items]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement	44,189		44,189
Maturity Less than 30 Days [Member] | U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Derivative [Line Items]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement	0		0
Maturity 30 to 90 Days [Member] | U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Derivative [Line Items]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement	0		0
Maturity Greater than 90 Days [Member] | U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Derivative [Line Items]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement	25,000		25,000
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member]
Derivative [Line Items]
Derivative, Notional Amount	286,500		286,500		$ 264,400
Not Designated as Hedging Instrument [Member] | Other Assets [Member] | Interest Rate Contracts [Member]
Derivative [Line Items]
Fair value of asset derivative instruments	19,803		19,803		12,438
Not Designated as Hedging Instrument [Member] | Other Liabilities [Member] | Interest Rate Contracts [Member]
Derivative [Line Items]
Fair value of liability derivative instruments	$ 19,841		$ 19,841		$ 12,478

Derivatives and Balance Sheet56

Derivatives and Balance Sheet Offsetting Balance Sheet Offsetting (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Balance Sheet Offsetting [Line Items]
Repurchase agreements, amounts offset in balance sheet	$ 0	$ 0
Repurchase agreements, net amount presented in statement of financial position	69,189	99,699
Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Securities	(69,189)	(99,699)
Securities sold under agreements to repurchase, amount not offset	0	0
Interest Rate Contracts [Member]
Balance Sheet Offsetting [Line Items]
Derivative Assets, Gross Amounts Offset in the Balance Sheets	0	0
Derivative Asset	19,803	12,438
Derivative, Collateral, Obligation to Return Securities	0	0
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	19,803	12,438
Derivative Liability, Gross Amounts Offset in Balance Sheets	0	0
Derivative Liability	19,841	12,478
Derivative, Collateral, Right to Reclaim Securities	(19,841)	(12,478)
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	0	0
Available-for-sale Securities [Member]
Balance Sheet Offsetting [Line Items]
Securities Sold under Agreements to Repurchase, Gross	69,189	99,699
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member] | Other Assets [Member]
Balance Sheet Offsetting [Line Items]
Fair value of asset derivative instruments	19,803	12,438
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member] | Other Liabilities [Member]
Balance Sheet Offsetting [Line Items]
Fair value of liability derivative instruments	$ 19,841	$ 12,478

Commitments and Contingent Li57

Commitments and Contingent Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016	Aug. 24, 2016	Dec. 31, 2015
Other Commitments [Line Items]
Sale Leaseback Transaction, Deferred Gain, Gross			$ 742
Sale Leaseback Transaction, Deferred Gain, Net	$ 730	$ 730
Commitments to Extend Credit [Member]
Other Commitments [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability	2,100,000	2,100,000		$ 1,930,000
Standby Letters of Credit [Member]
Other Commitments [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability	48,400	48,400		38,700
Commercial Letter of Credit and other off-balance sheet liabilities [Member]
Other Commitments [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability	6,600	6,600		$ 5,000
Branch consolidation [Member]
Other Commitments [Line Items]
Increase (Decrease) in Restructuring Reserve	849
Restructuring and Related Cost, Incurred Cost	$ 857	$ 883

Shareholders' Equity (Details)

Shareholders' Equity (Details) - $ / shares	Oct. 27, 2016	Jul. 28, 2016	Apr. 27, 2016	Jan. 28, 2016
Subsequent Event [Line Items]
Declared quarterly cash dividend		$ 0.20	$ 0.19	$ 0.18
Special Dividends Payable, Amount Per Share		$ 0.19	$ 0.18	$ 0.20
Subsequent Event [Member]
Subsequent Event [Line Items]
Declared quarterly cash dividend	$ 0.20
Special Dividends Payable, Amount Per Share	$ 0.19

Shareholders' Equity Narrative

Shareholders' Equity Narrative (Details)	Sep. 30, 2016shares
Shareholders' Equity [Abstract]
Preferred Stock Converted Into Common Stock, Shares	102,363

Accumulated Other Comprehensi60

Accumulated Other Comprehensive Income (Changes in AOCI by Component) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	[1]	$ 20,811	$ 2,789	$ (6,295)	$ 5,621
Other comprehensive loss before reclassifications	[1]	(4,049)	10,126	23,229	7,881
Amounts reclassified from accumulated other comprehensive income (loss)	[1]	(257)	(89)	(429)	(676)
Net current-period other comprehensive income (loss)	[1]	(4,306)	10,037	22,800	7,205
Ending balance	[1]	16,505	12,826	16,505	12,826
Unrealized Gains and Losses on Available-for-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	[1]	27,280	4,819	386	7,462
Other comprehensive loss before reclassifications	[1]	(4,049)	10,126	23,229	8,161
Amounts reclassified from accumulated other comprehensive income (loss)	[1]	(364)	(151)	(748)	(829)
Net current-period other comprehensive income (loss)	[1]	(4,413)	9,975	22,481	7,332
Ending balance	[1]	22,867	14,794	22,867	14,794
Unrealized Gains and Losses on Pension Plan Liability [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	[1]	(6,469)	(2,030)	(6,681)	(1,841)
Other comprehensive loss before reclassifications	[1]	0	0	0	(280)
Amounts reclassified from accumulated other comprehensive income (loss)	[1]	107	62	319	153
Net current-period other comprehensive income (loss)	[1]	107	62	319	(127)
Ending balance	[1]	$ (6,362)	$ (1,968)	$ (6,362)	$ (1,968)
[1]	All amounts are net of tax. Amounts in parenthesis indicate debits.

Accumulated Other Comprehensi61

Accumulated Other Comprehensive Income (Reclassification out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment securities gains, net			$ 1,174	$ 1,300
Compensation and employee benefits	$ 38,476	$ 35,175	112,086	112,721
Total before tax	39,608	37,295	106,746	104,282
Income tax provision	(12,124)	(11,515)	(32,598)	(32,195)
Net income	27,484	25,780	74,148	72,087
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains and Losses on Available-for-Sale Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment securities gains, net	572	236	1,174	1,300
Total before tax	572	236	1,174	1,300
Income tax provision	(208)	(85)	(426)	(471)
Net income	364	151	748	829
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains and Losses on Pension Plan Liability [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Compensation and employee benefits	(167)	(97)	(501)	(240)
Total before tax	(167)	(97)	(501)	(240)
Income tax provision	60	35	182	87
Net income	$ (107)	$ (62)	$ (319)	$ (153)

Fair Value Accounting and Mea62

Fair Value Accounting and Measurement (Financial Assets And Liabilities Accounted for Fair Value On Recurring Basis) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 2,360,084	$ 2,157,694
Fair Value, Level 2 to level 1 Transfers, Amount	0
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 2,360,084	2,157,694
Other assets (Interest rate contracts)	19,803	12,438
Other liabilities (Interest rate contracts)	19,841	12,478
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	548	20,137
Other assets (Interest rate contracts)	0	0
Other liabilities (Interest rate contracts)	0	0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	2,359,536	2,137,557
Other assets (Interest rate contracts)	19,803	12,438
Other liabilities (Interest rate contracts)	19,841	12,478
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Other assets (Interest rate contracts)	0	0
Other liabilities (Interest rate contracts)	0	0
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	1,512,924	1,286,489
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	1,512,924	1,286,489
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
State and Municipal Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	503,118	492,169
State and Municipal Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
State and Municipal Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	503,118	492,169
State and Municipal Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
U.S. Government Agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	338,292	353,782
U.S. Government Agency [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
U.S. Government Agency [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	338,292	353,782
U.S. Government Agency [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
US Government Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	548	20,137
US Government Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	548	20,137
US Government Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
US Government Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Other Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	5,202	5,117
Other Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Other Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	5,202	5,117
Other Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 0	$ 0

Fair Value Accounting and Mea63

Fair Value Accounting and Measurement (Financial Assets Accounted For Fair Value On Nonrecurring Basis) (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 2,304	$ 350	$ 2,304	$ 350
Fair Value, Option, Changes in Fair Value, Gain (Loss)	(661)	(1,658)	(3,299)	(1,674)
OREO	335	3,286	335	3,286
Assets, Fair Value Disclosure	2,639	3,636	2,639	3,636
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0	0	0
OREO	0	0	0	0
Assets, Fair Value Disclosure	0	0	0	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0	0	0
OREO	0	0	0	0
Assets, Fair Value Disclosure	0	0	0	0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	2,304	350	2,304	350
OREO	335	3,286	335	3,286
Assets, Fair Value Disclosure	2,639	3,636	2,639	3,636
Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Option, Changes in Fair Value, Gain (Loss)	(647)	(1,012)	(3,285)	(1,012)
Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Option, Changes in Fair Value, Gain (Loss)	$ (14)	$ (646)	$ (14)	$ (662)

Fair Value Accounting and Mea64

Fair Value Accounting and Measurement (Quantitative Information About Level 3 Fair Value Measurements) (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands		3 Months Ended
		Sep. 30, 2016	Sep. 30, 2015
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans		$ 2,304	$ 350
OREO		335	3,286
Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans		2,304	350
OREO		335	3,286
Collateral Dependent [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans		943	$ 350
Other Collateral [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans		$ 1,361
Other Collateral [Member] | Market Approach Valuation Technique [Member] | Impaired Loans [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	[1]		0.00%
Fair Value Inputs, Discount Rate	[2],[3]	2.85%
Other Collateral [Member] | Market Approach Valuation Technique [Member] | Impaired Loans [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	[1]		0.00%
Fair Value Inputs, Discount Rate	[2],[3]	6.50%
Other Collateral [Member] | Market Approach Valuation Technique [Member] | Impaired Loans [Member] | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	[1]		0.00%
Fair Value Inputs, Discount Rate	[2],[3]	3.85%
[1]	As there was only one impaired loan remeasured, a range of discounts could not be provided. The collateral for this loan consisted of non-proprietary software.
[2]	Collateral consists of fixed assets and account receivable.
[3]	Discount rate used in discounted cash flow valuation.

Fair Value Accounting and Mea65

Fair Value Accounting and Measurement (Carrying Amounts and Estimated Fair Values of Selected Financial Instruments) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Assets
Interest-earning deposits with banks	$ 11,225	$ 8,373
Securities available for sale	2,360,084	2,157,694
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Assets
Cash and due from banks	180,839	166,929
Interest-earning deposits with banks	11,225	8,373
Securities available for sale	2,360,084	2,157,694
FHLB stock	12,640	12,722
Loans held for sale	3,361	4,509
Loans	6,189,493	5,746,855
FDIC loss-sharing asset	3,592	6,568
Interest rate contracts	19,803	12,438
Liabilities
Deposits	8,057,816	7,438,829
FHLB Advances	66,502	68,531
Repurchase agreements	69,189	99,699
Interest rate contracts	19,841	12,478
Estimate of Fair Value, Fair Value Disclosure [Member]
Assets
Cash and due from banks	180,839	166,929
Interest-earning deposits with banks	11,225	8,373
Securities available for sale	2,360,084	2,157,694
FHLB stock	12,640	12,722
Loans held for sale	3,361	4,509
Loans	6,274,917	5,752,423
FDIC loss-sharing asset	594	921
Interest rate contracts	19,803	12,438
Liabilities
Deposits	8,054,970	7,434,787
FHLB Advances	67,826	69,176
Repurchase agreements	69,543	100,346
Interest rate contracts	19,841	12,478
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Assets
Cash and due from banks	180,839	166,929
Interest-earning deposits with banks	11,225	8,373
Securities available for sale	548	20,137
FHLB stock	0	0
Loans held for sale	0	0
Loans	0	0
FDIC loss-sharing asset	0	0
Interest rate contracts	0	0
Liabilities
Deposits	7,645,310	6,979,924
FHLB Advances	0	0
Repurchase agreements	0	0
Interest rate contracts	0	0
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Assets
Cash and due from banks	0	0
Interest-earning deposits with banks	0	0
Securities available for sale	2,359,536	2,137,557
FHLB stock	12,640	12,722
Loans held for sale	3,361	4,509
Loans	0	0
FDIC loss-sharing asset	0	0
Interest rate contracts	19,803	12,438
Liabilities
Deposits	409,660	454,863
FHLB Advances	67,826	69,176
Repurchase agreements	69,543	100,346
Interest rate contracts	19,841	12,478
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Assets
Cash and due from banks	0	0
Interest-earning deposits with banks	0	0
Securities available for sale	0	0
FHLB stock	0	0
Loans held for sale	0	0
Loans	6,274,917	5,752,423
FDIC loss-sharing asset	594	921
Interest rate contracts	0	0
Liabilities
Deposits	0	0
FHLB Advances	0	0
Repurchase agreements	0	0
Interest rate contracts	$ 0	$ 0

Earnings per Common Share (Deta

Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net Income		$ 27,484	$ 25,780	$ 74,148	$ 72,087
Earnings allocated to participating securities - preferred shares		48	45	131	127
Earnings allocated to participating securities - nonvested restricted shares		378	296	953	772
Earnings allocated to common shareholders, Basic		$ 27,058	$ 25,439	$ 73,064	$ 71,188
Weighted average common shares outstanding		57,215	57,051	57,173	57,007
Basic earnings per common share		$ 0.47	$ 0.45	$ 1.28	$ 1.25
Earnings allocated to common shareholders, Diluted	[1]	$ 27,058	$ 25,439	$ 73,064	$ 71,188
Dilutive effect of equity awards and warrants		10	13	10	14
Weighted average diluted common shares outstanding		57,225	57,064	57,183	57,021
Diluted earnings per common share		$ 0.47	$ 0.45	$ 1.28	$ 1.25
Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive.		15	29	20	40
[1]	Earnings allocated to common shareholders for basic and diluted EPS may differ under the two-class method as a result of adding common stock equivalents for options and warrants to dilutive shares outstanding, which alters the ratio used to allocate earnings to common shareholders and participating securities for the purposes of calculating diluted EPS.