10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

________________________________________________________ 

FORM 10-Q

________________________________________________________ 

(Mark One)

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2017.

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from              to             .

Commission File Number 0-20288

 ________________________________________________________ 

COLUMBIA BANKING SYSTEM, INC.

(Exact name of registrant as specified in its charter)

 ________________________________________________________ 

Washington	91-1422237
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification Number)
1301 A Street Tacoma, Washington	98402-2156
(Address of principal executive offices)	(Zip Code)

(253) 305-1900

(Issuer’s telephone number, including area code)

(Former name, former address and former fiscal year, if changed since last report)________________________________________________________ 

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ☒    No  ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  ☒    No  ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	☒	Accelerated filer	☐
Non-accelerated filer	☐	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). 

Yes ☐  No  ☒

The number of shares of common stock outstanding at April 30, 2017 was 58,343,431.

TABLE OF CONTENTS

		Page
	PART I — FINANCIAL INFORMATION
Item 1.	Financial Statements (unaudited)
	Consolidated Balance Sheets - March 31, 2017 and December 31, 2016	1
	Consolidated Statements of Income - three months ended March 31, 2017 and 2016	2
	Consolidated Statements of Comprehensive Income - three months ended March 31, 2017 and 2016	3
	Consolidated Statements of Changes in Shareholders’ Equity - three months ended March 31, 2017 and 2016	4
	Consolidated Statements of Cash Flows - three months ended March 31, 2017 and 2016	5
	Notes to Unaudited Consolidated Financial Statements	7
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	35
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	50
Item 4.	Controls and Procedures	50
	PART II — OTHER INFORMATION
Item 1.	Legal Proceedings	51
Item 1A.	Risk Factors	51
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	51
Item 3.	Defaults Upon Senior Securities	51
Item 4.	Mine Safety Disclosures	51
Item 5.	Other Information	51
Item 6.	Exhibits	52
	Signatures	53

i

PART I - FINANCIAL INFORMATION

Item 1. FINANCIAL STATEMENTS

CONSOLIDATED BALANCE SHEETS

Columbia Banking System, Inc.

(Unaudited)

			March 31, 2017			December 31, 2016
ASSETS			(in thousands)
Cash and due from banks			$	169,697		$	193,038
Interest-earning deposits with banks			13,124			31,200
Total cash and cash equivalents			182,821			224,238
Securities available for sale at fair value (amortized cost of $2,349,149 and $2,299,037, respectively)			2,331,359			2,278,577
Federal Home Loan Bank stock at cost			10,600			10,240
Loans held for sale			3,245			5,846
Loans, net of unearned income of ($32,212) and ($33,718), respectively			6,228,136			6,213,423
Less: allowance for loan and lease losses			71,021			70,043
Loans, net			6,157,115			6,143,380
FDIC loss-sharing asset			3,239			3,535
Interest receivable			31,345			30,074
Premises and equipment, net			148,541			150,342
Other real estate owned			4,519			5,998
Goodwill			382,762			382,762
Other intangible assets, net			16,282			17,631
Other assets			255,444			256,984
Total assets			$	9,527,272		$	9,509,607
LIABILITIES AND SHAREHOLDERS’ EQUITY
Deposits:
Noninterest-bearing			$	3,958,106		$	3,944,495
Interest-bearing			4,130,721			4,114,920
Total deposits			8,088,827			8,059,415
Federal Home Loan Bank advances			15,483			6,493
Securities sold under agreements to repurchase			46,914			80,822
Other liabilities			100,705			111,865
Total liabilities			8,251,929			8,258,595
Commitments and contingent liabilities (Note 10)
Shareholders’ equity:
	March 31, 2017	December 31, 2016
Preferred stock (no par value)	(in thousands)
Authorized shares	2,000	2,000
Issued and outstanding	—	9	—			2,217
Common stock (no par value)
Authorized shares	115,000	115,000
Issued and outstanding	58,329	58,042	999,702			995,837
Retained earnings			288,247			271,957
Accumulated other comprehensive loss			(12,606		)	(18,999		)
Total shareholders’ equity			1,275,343			1,251,012
Total liabilities and shareholders’ equity			$	9,527,272		$	9,509,607

See accompanying Notes to unaudited Consolidated Financial Statements.

1

CONSOLIDATED STATEMENTS OF INCOME

Columbia Banking System, Inc.

(Unaudited)

	Three Months Ended
	March 31,
	2017			2016
	(in thousands except per share amounts)
Interest Income
Loans	$	74,120		$	70,316
Taxable securities	10,986			8,017
Tax-exempt securities	2,691			2,803
Deposits in banks	19			38
Total interest income	87,816			81,174
Interest Expense
Deposits	787			742
Federal Home Loan Bank advances	225			124
Other borrowings	129			138
Total interest expense	1,141			1,004
Net Interest Income	86,675			80,170
Provision for loan and lease losses	2,775			5,254
Net interest income after provision for loan and lease losses	83,900			74,916
Noninterest Income
Deposit account and treasury management fees	7,287			6,989
Card revenue	5,723			5,652
Financial services and trust revenue	2,839			2,821
Loan revenue	3,593			2,262
Merchant processing revenue	2,019			2,102
Bank owned life insurance	1,280			1,116
Investment securities gains	—			373
Change in FDIC loss-sharing asset	(274		)	(1,103		)
Other	2,392			434
Total noninterest income	24,859			20,646
Noninterest Expense
Compensation and employee benefits	40,825			36,319
Occupancy	7,191			10,173
Merchant processing expense	1,049			1,033
Advertising and promotion	817			842
Data processing	4,208			4,146
Legal and professional fees	3,369			1,325
Taxes, licenses and fees	1,241			1,290
Regulatory premiums	776			1,141
Net cost of operation of other real estate owned	152			104
Amortization of intangibles	1,349			1,583
Other	8,009			7,118
Total noninterest expense	68,986			65,074
Income before income taxes	39,773			30,488
Income tax provision	10,574			9,229
Net Income	$	29,199		$	21,259
Earnings per common share
Basic	$	0.50		$	0.37
Diluted	$	0.50		$	0.37
Dividends paid per common share	$	0.22		$	0.38
Weighted average number of common shares outstanding	57,388			57,114
Weighted average number of diluted common shares outstanding	57,394			57,125

See accompanying Notes to unaudited Consolidated Financial Statements.

2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

Columbia Banking System, Inc.

(Unaudited)

	Three Months Ended
	March 31,
	2017		2016
	(in thousands)
Net income	$	29,199	$	21,259
Other comprehensive income (loss), net of tax:
Unrealized gain from securities:
Net unrealized holding gain from available for sale securities arising during the period, net of tax of ($968) and ($10,686)	1,702		18,770
Reclassification adjustment of net gain from sale of available for sale securities included in income, net of tax of $0 and $135	—		(238		)
Net unrealized gain from securities, net of reclassification adjustment	1,702		18,532
Pension plan liability adjustment:
Reduction in unfunded defined benefit plan liability during the period, net of tax of ($2,622) and $0	4,604		—
Amortization of unrecognized net actuarial loss included in net periodic pension cost, net of tax of ($49) and ($61)	87		106
Pension plan liability adjustment, net	4,691		106
Other comprehensive income	6,393		18,638
Total comprehensive income	$	35,592	$	39,897

See accompanying Notes to unaudited Consolidated Financial Statements.

3

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY

Columbia Banking System, Inc.

(Unaudited)

	Preferred Stock					Common Stock					Retained Earnings			Accumulated Other Comprehensive Income (Loss)			Total Shareholders’ Equity
	Number of Shares		Amount			Number of Shares		Amount
	(in thousands)
Balance at January 1, 2017	9		$	2,217		58,042		$	995,837		$	271,957		$	(18,999	)	$	1,251,012
Adjustment to opening retained earnings pursuant to adoption of ASU 2016-09	—		—			—		184			(117		)	—			67
Net income	—		—			—		—			29,199			—			29,199
Other comprehensive income	—		—			—		—			—			6,393			6,393
Issuance of common stock - stock option and other plans	—		—			28		1,145			—			—			1,145
Issuance of common stock - restricted stock awards, net of canceled awards	—		—			207		2,358			—			—			2,358
Preferred stock conversion to common stock	(9	)	(2,217		)	102		2,217			—			—			—
Purchase and retirement of common stock	—		—			(50	)	(2,039		)	—			—			(2,039		)
Cash dividends paid on common stock	—		—			—		—			(12,792		)	—			(12,792		)
Balance at March 31, 2017	—		$	—		58,329		$	999,702		$	288,247		$	(12,606	)	$	1,275,343
Balance at January 1, 2016	9		$	2,217		57,724		$	990,281		$	255,925		$	(6,295	)	$	1,242,128
Net income	—		—			—		—			21,259			—			21,259
Other comprehensive income	—		—			—		—			—			18,638			18,638
Issuance of common stock - stock option and other plans	—		—			20		598			—			—			598
Issuance of common stock - restricted stock awards, net of canceled awards	—		—			299		1,180			—			—			1,180
Purchase and retirement of common stock	—		—			(35	)	(1,033		)	—			—			(1,033		)
Preferred dividends	—		—			—		—			(39		)	—			(39		)
Cash dividends paid on common stock	—		—			—		—			(21,943		)	—			(21,943		)
Balance at March 31, 2016	9		$	2,217		58,008		$	991,026		$	255,202		$	12,343		$	1,260,788

See accompanying Notes to unaudited Consolidated Financial Statements.

4

CONSOLIDATED STATEMENTS OF CASH FLOWS Columbia Banking System, Inc. (Unaudited)
	Three Months Ended March 31,
	2017			2016
	(in thousands)
Cash Flows From Operating Activities
Net income	$	29,199		$	21,259
Adjustments to reconcile net income to net cash provided by operating activities
Provision for loan and lease losses	2,775			5,254
Stock-based compensation expense	2,358			1,180
Depreciation, amortization and accretion	6,074			10,798
Investment securities gains	—			(373		)
Net realized loss on sale of premises and equipment, loans held for investment and other assets	55			106
Net realized loss on sale and valuation adjustments of other real estate owned	204			90
Originations of loans held for sale	(31,295		)	(19,174		)
Proceeds from sales of loans held for sale	33,896			20,002
Net change in:
Interest receivable	(1,271		)	(1,427		)
Interest payable	(9		)	(55		)
Other assets	(2,164		)	(3,731		)
Other liabilities	(3,841		)	(4,619		)
Net cash provided by operating activities	35,981			29,310
Cash Flows From Investing Activities
Loans originated and acquired, net of principal collected	(21,936		)	(64,056		)
Purchases of:
Securities available for sale	(108,958		)	(95,686		)
Premises and equipment	(336		)	(445		)
Federal Home Loan Bank stock	(31,400		)	(10,520		)
Proceeds from:
FDIC reimbursement on loss-sharing asset	26			258
Sales of securities available for sale	—			38,876
Principal repayments and maturities of securities available for sale	55,369			52,422
Sales of premises and equipment and loans held for investment	6,893			1,911
Redemption of Federal Home Loan Bank stock	31,040			13,001
Sales of other real estate and other personal property owned	1,275			1,326
Payments to FDIC related to loss-sharing asset	(210		)	(611		)
Net cash used in investing activities	(68,237		)	(63,524		)
Cash Flows From Financing Activities
Net increase in deposits	29,433			158,120
Net decrease in sweep repurchase agreements	(33,908		)	(25,860		)
Proceeds from:
Federal Home Loan Bank advances	785,000			165,000
Exercise of stock options	1,145			598
Payments for:
Repayment of Federal Home Loan Bank advances	(776,000		)	(227,000		)
Common stock dividends	(12,792		)	(21,943		)
Preferred stock dividends	—			(39		)
Purchase and retirement of common stock	(2,039		)	(1,033		)
Net cash (used in) provided by financing activities	(9,161		)	47,843
Increase (decrease) in cash and cash equivalents	(41,417		)	13,629
Cash and cash equivalents at beginning of period	224,238			175,302
Cash and cash equivalents at end of period	$	182,821		$	188,931

5

CONSOLIDATED STATEMENTS OF CASH FLOWS, Continued Columbia Banking System, Inc. (Unaudited)
	Three Months Ended March 31,
	2017		2016
	(in thousands)
Supplemental Information:
Cash paid during the period for:
Cash paid for interest	$	1,150	$	1,059
Cash paid for income tax	$	—	$	6,350
Non-cash investing and financing activities
Loans transferred to other real estate owned	$	—	$	105

See accompanying Notes to unaudited Consolidated Financial Statements.

6

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

Columbia Banking System, Inc.

1. 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 three months ended March 31, 2017 are not necessarily indicative of results to be anticipated for the year ending December 31, 2017. The accompanying interim unaudited Consolidated Financial Statements should be read in conjunction with the financial statements and related notes contained in the Company’s 2016 Annual Report on Form 10-K.

Significant Accounting Policies

The significant accounting policies used in preparation of our Consolidated Financial Statements are disclosed in our 2016 Annual Report on Form 10-K. There have not been any changes in our significant accounting policies compared to those contained in our 2016 Form 10-K disclosure for the year ended December 31, 2016.

2. Accounting Pronouncements Recently Issued

In March 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-08, Premium Amortization on Purchased Callable Debt Securities. The amendments included in this ASU change guidance on the amortization period of premiums on certain purchased callable debt securities. Specifically, the amendments shorten the premium amortization period to the earliest call date. The amendments in ASU 2017-08 are effective for fiscal years and interim periods within those years, beginning after December 15, 2018. Early adoption is permitted. The Company early adopted the amendments of ASU 2017-08 during the current quarter. The impact of the adoption of ASU 2017-08 to current period net income and opening retained earnings was not material.

In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment. The amendments in this are intended to reduce the cost and complexity of the goodwill impairment test by eliminating the second step of the goodwill impairment test. An entity will apply a one-step quantitative test and record the amount of goodwill impairment as the excess of a reporting unit’s carrying amount over its fair value, not to exceed the total amount of goodwill allocated to the reporting unit. The new guidance does not amend the optional qualitative assessment of goodwill impairment. The amendments in ASU 2017-04 are effective for annual or interim periods beginning after December 15, 2019. Early adoption is permitted. The Company does not expect the impact to its Consolidated Financial Statements to be material.

In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments. The amendments included in this ASU require an entity to reflect its current estimate of all expected credit losses for assets held at an amortized cost basis. For available for sale debt securities, credit losses will be measured in a manner similar to current GAAP, however, this ASU will require that credit losses be presented as an allowance rather than as a write-down. The amendments in ASU 2016-13 are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years, and are required to be adopted through a modified retrospective approach, with a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the ASU is effective.

Currently, the Company cannot reasonably estimate the impact that adoption of ASU 2016-13 will have on its Consolidated Financial Statements; however, the impact may be significant. That assessment is based upon the fact that, unlike the incurred loss models in existing GAAP, the current expected credit loss (“CECL”) model in ASU 2016-13 does not specify a threshold for the recognition of an impairment allowance. Rather, the Company will recognize an impairment allowance equal to its estimate of lifetime expected credit losses, adjusted for prepayments, for in-scope financial instruments as of the end of the reporting period. Accordingly, the impairment allowance measured under the CECL model could increase significantly from the impairment allowance measured under the Company’s existing incurred loss model. Significant CECL implementation matters to be addressed by the Company include selecting loss estimation methodologies, identifying, sourcing and storing data, addressing data gaps, defining a reasonable and supportable forecast period, selecting historical loss information which will be

7

reverted to, documenting the CECL estimation process, assessing the impact to internal controls over financial reporting, capital planning and seeking process approval from audit and regulatory stakeholders.

In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting. The amendments included in this ASU simplify several aspects of the accounting for employee share-based payment transactions including the accounting for income taxes, forfeitures and statutory tax withholding requirements, as well as classification in the statement of cash flows. The Company adopted the amendments of ASU 2016-09 in the current quarter. Adoption of amended forfeiture guidance resulted in an opening period adjustment decreasing retained earnings $117 thousand and increasing common stock $184 thousand. Adoption of the amended excess tax benefit guidance resulted in a current period income tax benefit of $1.2 million or $0.02 per diluted common share.

In February 2016, the FASB issued ASU 2016-02, Leases. The amendments included in this ASU create a new accounting model for both lessees and lessors. The new guidance requires lessees to recognize lease liabilities, initially measured as the present value of future lease payments, and corresponding right-of-use assets for all leases with lease terms greater than 12 months. This model differs from the current lease accounting model, which does not require such lease liabilities and corresponding right-of-use assets to be recorded for operating leases. The amendments in ASU 2016-02 must be adopted using the modified retrospective approach and will be effective for the first interim or annual period beginning after December 15, 2018. Early adoption is permitted. During 2016, the Company implemented a new lease administration application that allows the Company to readily measure future lease payment streams, which is an important component of the new lease accounting model. Significant implementation matters to be addressed by the Company include selecting either a third-party lease accounting application or internally-developing such an application, assessing the impact to its Consolidated Financial Statements and internal controls over financial reporting and documenting the new lease accounting process. See Note 17, “Commitments and Contingent Liabilities” to our 2016 Form 10-K, for more information regarding the minimum future payments related to our operating leases.

3. Securities

The following table summarizes the amortized cost, gross unrealized gains and losses and the resulting fair value of securities available for sale:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
March 31, 2017
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	1,506,914	$	2,400	$	(22,816	)	$	1,486,498
State and municipal securities	484,376		7,316		(4,337		)	487,355
U.S. government agency and government-sponsored enterprise securities	352,323		1,241		(1,381		)	352,183
U.S. government securities	252		—		—			252
Other securities	5,284		60		(273		)	5,071
Total	$	2,349,149	$	11,017	$	(28,807	)	$	2,331,359
December 31, 2016
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	1,486,690	$	2,760	$	(23,718	)	$	1,465,732
State and municipal securities	473,914		6,343		(5,197		)	475,060
U.S. government agency and government-sponsored enterprise securities	332,348		1,065		(1,511		)	331,902
U.S. government securities	801		—		(1		)	800
Other securities	5,284		63		(264		)	5,083
Total	$	2,299,037	$	10,231	$	(30,691	)	$	2,278,577

8

There were no proceeds from sales of securities available for sale for the three months ended March 31, 2017 and there were $38.9 million for the three months ended March 31, 2016. The following table provides the gross realized gains and losses on the sales of securities for the periods indicated:

	Three Months Ended
	March 31,
	2017		2016
	(in thousands)
Gross realized gains	$	—	$	373
Gross realized losses	—		—
Net realized gains	$	—	$	373

The scheduled contractual maturities of investment securities available for sale at March 31, 2017 are presented as follows:

	March 31, 2017
	Amortized Cost		Fair Value
	(in thousands)
Due within one year	$	53,518	$	53,606
Due after one year through five years	502,633		505,398
Due after five years through ten years	731,123		724,361
Due after ten years	1,056,591		1,042,923
Other securities with no stated maturity	5,284		5,071
Total investment securities available-for-sale	$	2,349,149	$	2,331,359

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:

	March 31, 2017
	(in thousands)
Washington and Oregon State to secure public deposits	$	228,794
Federal Reserve Bank to secure borrowings	54,551
Other securities pledged	125,954
Total securities pledged as collateral	$	409,299

9

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 March 31, 2017 and December 31, 2016:

	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
	(in thousands)
March 31, 2017
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	1,038,971	$	(17,020	)	$	155,846	$	(5,796	)	$	1,194,817	$	(22,816	)
State and municipal securities	162,860		(4,249		)	3,412		(88		)	166,272		(4,337		)
U.S. government agency and government-sponsored enterprise securities	193,846		(1,381		)	—		—			193,846		(1,381		)
U.S. government securities	251		—			—		—			251		—
Other securities	2,263		(51		)	2,734		(222		)	4,997		(273		)
Total	$	1,398,191	$	(22,701	)	$	161,992	$	(6,106	)	$	1,560,183	$	(28,807	)
December 31, 2016
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	1,029,116	$	(18,788	)	$	159,046	$	(4,930	)	$	1,188,162	$	(23,718	)
State and municipal securities	211,342		(5,064		)	3,384		(133		)	214,726		(5,197		)
U.S. government agency and government-sponsored enterprise securities	218,811		(1,511		)	—		—			218,811		(1,511		)
U.S. government securities	251		(1		)	—		—			251		(1		)
Other securities	2,263		(51		)	2,743		(213		)	5,006		(264		)
Total	$	1,461,783	$	(25,415	)	$	165,173	$	(5,276	)	$	1,626,956	$	(30,691	)

At March 31, 2017, there were 198 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations securities in an unrealized loss position, of which 52 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 March 31, 2017.

At March 31, 2017, there were 142 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 March 31, 2017, none of the rated obligations of state and local government entities held by the Company had a below investment grade credit rating. Because the credit quality of these securities are investment grade and the Company does not intend to sell these securities nor does the Company consider it more likely than not that it will be required to sell these securities before the recovery of amortized cost basis, which may be upon maturity, the Company does not consider these investments to be other-than-temporarily impaired at March 31, 2017.

At March 31, 2017, there were 20 U.S. government agency and government-sponsored enterprise securities in an unrealized loss position, of which none were in a continuous loss position for 12 months or more. The decline in fair value is attributable to changes in interest rates relative to where these investments fall within the yield curve and their individual characteristics. Because the Company does not currently intend to sell these securities nor does the Company consider it more likely than not that it will be required to sell these securities before the recovery of amortized cost basis, which may be upon maturity, the Company does not consider these investments to be other-than-temporarily impaired at March 31, 2017.

At March 31, 2017, there was one U.S. government security in an unrealized loss position, which was not in a continuous loss position for 12 months or more. The decline in fair value is attributable to changes in interest rates relative to where this investment falls within the yield curve and its individual characteristics. Because the Company does not currently intend to sell this security nor does the Company consider it more likely than not that it will be required to sell this security before the

10

recovery of amortized cost basis, which may be upon maturity, the Company does not consider this investment to be other-than-temporarily impaired at March 31, 2017.

At March 31, 2017, there were two other securities in an unrealized loss position, of which one was in a continuous unrealized loss position for 12 months or more. The decline in fair value is attributable to changes in interest rates and the additional risk premium investors are demanding for investment securities with these characteristics. The Company does not consider these investments to be other-than-temporarily impaired at March 31, 2017 as it has the intent and ability to hold this investment for sufficient time to allow for recovery in the market value.

4. 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):

	March 31, 2017									December 31, 2016
	Loans, excluding PCI loans			PCI Loans			Total			Loans, excluding PCI loans			PCI Loans			Total
	(in thousands)
Commercial business	$	2,559,247		$	19,047		$	2,578,294		$	2,551,054		$	20,185		$	2,571,239
Real estate:
One-to-four family residential	172,581			14,969			187,550			170,331			17,862			188,193
Commercial and multifamily residential	2,783,433			88,527			2,871,960			2,719,830			89,231			2,809,061
Total real estate	2,956,014			103,496			3,059,510			2,890,161			107,093			2,997,254
Real estate construction:
One-to-four family residential	115,219			479			115,698			121,887			832			122,719
Commercial and multifamily residential	172,895			989			173,884			209,118			1,565			210,683
Total real estate construction	288,114			1,468			289,582			331,005			2,397			333,402
Consumer	318,069			14,893			332,962			329,261			15,985			345,246
Less: Net unearned income	(32,212		)	—			(32,212		)	(33,718		)	—			(33,718		)
Total loans, net of unearned income	6,089,232			138,904			6,228,136			6,067,763			145,660			6,213,423
Less: Allowance for loan and lease losses	(61,626		)	(9,395		)	(71,021		)	(59,528		)	(10,515		)	(70,043		)
Total loans, net	$	6,027,606		$	129,509		$	6,157,115		$	6,008,235		$	135,145		$	6,143,380
Loans held for sale	$	3,245		$	—		$	3,245		$	5,846		$	—		$	5,846

At March 31, 2017 and December 31, 2016, the Company had no material foreign activities. Substantially all of the Company’s loans and unfunded commitments are geographically concentrated in its service areas within the states of Washington, Oregon and Idaho.

The Company has made loans to executive officers and directors of the Company and related interests. These loans are made on the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with unrelated persons and do not involve more than the normal risk of collectability. The aggregate dollar amount of these loans was $10.1 million at March 31, 2017 and December 31, 2016. During the first three months of 2017, there were $75 thousand in advances and $96 thousand in repayments.

At March 31, 2017 and December 31, 2016, $2.28 billion and $2.29 billion of commercial and residential real estate loans were pledged as collateral on Federal Home Loan Bank of Des Moines (“FHLB”) borrowings and additional borrowing capacity. The Company has also pledged $50.0 million and $54.2 million of commercial loans to the Federal Reserve Bank for additional borrowing capacity at March 31, 2017 and December 31, 2016, respectively.

11

The following is an analysis of nonaccrual loans as of March 31, 2017 and December 31, 2016:

	March 31, 2017				December 31, 2016
	Recorded Investment Nonaccrual Loans		Unpaid Principal Balance Nonaccrual Loans		Recorded Investment Nonaccrual Loans		Unpaid Principal Balance Nonaccrual Loans
	(in thousands)
Commercial business:
Secured	$	10,659	$	21,144	$	11,524	$	21,503
Unsecured	189		457		31		303
Real estate:
One-to-four family residential	450		1,703		568		1,302
Commercial & multifamily residential:
Commercial land	2,729		2,726		934		922
Income property	3,290		3,561		4,005		4,247
Owner occupied	4,218		8,544		6,248		9,030
Real estate construction:
One-to-four family residential:
Land and acquisition	—		—		14		102
Residential construction	213		213		549		549
Consumer	3,799		4,180		3,883		4,331
Total	$	25,547	$	42,528	$	27,756	$	42,289

12

Loans, excluding purchased credit impaired loans

The following is an aging of the recorded investment of the loan portfolio as of March 31, 2017 and December 31, 2016:

	Current Loans		30 - 59 Days Past Due		60 - 89 Days Past Due		Greater than 90 Days Past Due		Total Past Due		Nonaccrual Loans		Total Loans
March 31, 2017	(in thousands)
Commercial business:
Secured	$	2,447,180	$	6,417	$	204	$	—	$	6,621	$	10,659	$	2,464,460
Unsecured	90,245		34		5		—		39		189		90,473
Real estate:
One-to-four family residential	168,634		1,115		—		—		1,115		450		170,199
Commercial & multifamily residential:
Commercial land	280,562		—		—		—		—		2,729		283,291
Income property	1,366,062		583		140		—		723		3,290		1,370,075
Owner occupied	1,107,061		—		45		—		45		4,218		1,111,324
Real estate construction:
One-to-four family residential:
Land and acquisition	6,770		29		—		—		29		—		6,799
Residential construction	107,382		189		—		—		189		213		107,784
Commercial & multifamily residential:
Income property	106,227		—		—		—		—		—		106,227
Owner occupied	64,365		—		—		—		—		—		64,365
Consumer	308,902		907		627		—		1,534		3,799		314,235
Total	$	6,053,390	$	9,274	$	1,021	$	—	$	10,295	$	25,547	$	6,089,232
	Current Loans		30 - 59 Days Past Due		60 - 89 Days Past Due		Greater than 90 Days Past Due		Total Past Due		Nonaccrual Loans		Total Loans
December 31, 2016	(in thousands)
Commercial business:
Secured	$	2,439,250	$	806	$	10	$	—	$	816	$	11,524	$	2,451,590
Unsecured	94,118		287		301		—		588		31		94,737
Real estate:
One-to-four family residential	164,416		2,448		500		—		2,948		568		167,932
Commercial & multifamily residential:
Commercial land	269,816		64		—		—		64		934		270,814
Income property	1,365,150		480		111		—		591		4,005		1,369,746
Owner occupied	1,052,078		1,652		—		—		1,652		6,248		1,059,978
Real estate construction:
One-to-four family residential:
Land and acquisition	11,542		—		—		—		—		14		11,556
Residential construction	109,080		—		—		—		—		549		109,629
Commercial & multifamily residential:
Income property	103,779		—		—		—		—		—		103,779
Owner occupied	103,480		—		—		—		—		—		103,480
Consumer	318,369		2,035		235		—		2,270		3,883		324,522
Total	$	6,031,078	$	7,772	$	1,157	$	—	$	8,929	$	27,756	$	6,067,763

13

The following is an analysis of impaired loans as of March 31, 2017 and December 31, 2016:

	Recorded Investment of Loans Collectively Measured for Contingency Provision		Recorded Investment of Loans Individually Measured for Specific Impairment		Impaired Loans With Recorded Allowance						Impaired Loans Without Recorded Allowance
					Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance
March 31, 2017	(in thousands)
Commercial business:
Secured	$	2,456,672	$	7,788	$	—	$	—	$	—	$	7,788	$	14,806
Unsecured	90,473		—		—		—		—		—		—
Real estate:
One-to-four family residential	169,686		513		424		688		11		89		287
Commercial & multifamily residential:
Commercial land	280,992		2,299		—		—		—		2,299		2,288
Income property	1,366,381		3,694		533		537		26		3,161		3,656
Owner occupied	1,107,814		3,510		—		—		—		3,510		6,327
Real estate construction:
One-to-four family residential:
Land and acquisition	6,799		—		—		—		—		—		—
Residential construction	107,784		—		—		—		—		—		—
Commercial & multifamily residential:
Income property	106,227		—		—		—		—		—		—
Owner occupied	64,365		—		—		—		—		—		—
Consumer	308,710		5,525		4,923		5,013		57		602		682
Total	$	6,065,903	$	23,329	$	5,880	$	6,238	$	94	$	17,449	$	28,046
	Recorded Investment of Loans Collectively Measured for Contingency Provision		Recorded Investment of Loans Individually Measured for Specific Impairment		Impaired Loans With Recorded Allowance						Impaired Loans Without Recorded Allowance
					Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance
December 31, 2016	(in thousands)
Commercial business:
Secured	$	2,442,772	$	8,818	$	2,414	$	2,484	$	664	$	6,404	$	12,831
Unsecured	94,737		—		—		—		—		—		—
Real estate:
One-to-four family residential	167,403		529		435		693		12		94		291
Commercial & multifamily residential:
Commercial land	270,106		708		—		—		—		708		687
Income property	1,365,321		4,425		540		544		27		3,885		4,148
Owner occupied	1,054,564		5,414		—		—		—		5,414		8,102
Real estate construction:
One-to-four family residential:
Land and acquisition	11,542		14		14		102		1		—		—
Residential construction	109,293		336		—		—		—		336		336
Commercial & multifamily residential:
Income property	103,779		—		—		—		—		—		—
Owner occupied	103,480		—		—		—		—		—		—
Consumer	319,307		5,215		4,464		4,558		57		751		833
Total	$	6,042,304	$	25,459	$	7,867	$	8,381	$	761	$	17,592	$	27,228

14

The following table provides additional information on impaired loans for the three month periods indicated:

	Three Months Ended March 31,
	2017				2016
	Average Recorded Investment Impaired Loans		Interest Recognized on Impaired Loans		Average Recorded Investment Impaired Loans		Interest Recognized on Impaired Loans
	(in thousands)
Commercial business:
Secured	$	8,303	$	19	$	12,103	$	17
Real estate:
One-to-four family residential	521		2		975		6
Commercial & multifamily residential:
Commercial land	1,504		—		—		—
Income property	4,059		1		2,080		3
Owner occupied	4,462		—		5,516		7
Real estate construction:
One-to-four family residential:
Land and acquisition	7		—		388		1
Residential construction	168		—		562		—
Consumer	5,370		27		824		2
Total	$	24,394	$	49	$	22,448	$	36

15

The following is an analysis of loans classified as troubled debt restructurings (“TDR”) during the three months ended March 31, 2017 and 2016:

	Three months ended March 31, 2017					Three months ended March 31, 2016
	Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment
	(dollars in thousands)
Commercial business:
Secured	3	$	356	$	356	3	$	1,370	$	1,370
Real estate:
Commercial and multifamily residential:
Owner occupied	—	—		—		1	250		250
Consumer	10	1,546		1,546		4	497		497
Total	13	$	1,902	$	1,902	8	$	2,117	$	2,117

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 $451 thousand of additional funds on loans classified as TDR as of March 31, 2017. The Company had $508 thousand of such commitments at December 31, 2016. The Company did not have any loans modified as TDR that defaulted within twelve months of being modified as TDR during the three month periods ended March 31, 2017 and 2016.

Purchased Credit Impaired Loans

Purchased credit impaired (“PCI”) loans are accounted for under ASC 310-30 and initially measured at fair value based on expected future cash flows over the life of the loans. Loans that have common risk characteristics are aggregated into pools. The Company remeasures contractual and expected cash flows, at the pool-level, on a quarterly basis.

Contractual cash flows are calculated based upon the loan pool terms after applying a prepayment factor. Calculation of the applied prepayment factor for contractual cash flows is the same as described below for expected cash flows.

Inputs to the determination of expected cash flows include cumulative default and prepayment data as well as loss severity and recovery lag information. Cumulative default and prepayment data are calculated via a transition matrix, which utilizes probability values of a loan pool transitioning into a particular delinquency state (e.g. 0-30 days past due, 31 to 60 days, etc.) given its delinquency state at the remeasurement date. Loss severity factors are based upon either actual charge-off data within the loan pools or industry averages, and recovery lags are based upon the collateral within the loan pools.

The excess of cash flows expected to be collected over the initial fair value of purchased credit impaired loans is referred to as the accretable yield and is accreted into interest income over the estimated life of the acquired loans using the effective yield method. Other adjustments to the accretable yield include changes in the estimated remaining life of the acquired loans, changes in expected cash flows and changes of indices for acquired loans with variable interest rates.

16

The following is an analysis of our PCI loans, net of related allowance for losses and remaining valuation discounts as of March 31, 2017 and December 31, 2016:

	March 31, 2017		December 31, 2016
	(in thousands)
Commercial business	$	20,292	$	21,606
Real estate:
One-to-four family residential	17,608		20,643
Commercial and multifamily residential	92,930		94,795
Total real estate	110,538		115,438
Real estate construction:
One-to-four family residential	479		832
Commercial and multifamily residential	1,089		1,726
Total real estate construction	1,568		2,558
Consumer	16,485		17,649
Subtotal of PCI loans	148,883		157,251
Less:
Valuation discount resulting from acquisition accounting	9,979		11,591
Allowance for loan losses	9,395		10,515
PCI loans, net of allowance for loan losses	$	129,509	$	135,145

The following table shows the changes in accretable yield for PCI loans for the three months ended March 31, 2017 and 2016:

	Three Months Ended March 31,
	2017			2016
	(in thousands)
Balance at beginning of period	$	45,191		$	58,981
Accretion	(4,182		)	(4,229		)
Disposals	(158		)	94
Reclassifications from (to) nonaccretable difference	(2,407		)	1,761
Balance at end of period	$	38,444		$	56,607

5. Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit

We record an allowance for loan and lease losses (the “allowance”) to recognize management’s estimate of credit losses incurred in the loan portfolio at each balance sheet date. We have used the same methodology for allowance calculations during the three months ended March 31, 2017 and 2016.

17

The following tables show a detailed analysis of the allowance for the three months ended March 31, 2017 and 2016:

	Beginning Balance		Charge-offs			Recoveries		Provision (Recovery)			Ending Balance		Specific Reserve		General Allocation
Three months ended March 31, 2017	(in thousands)
Commercial business:
Secured	$	36,050	$	(1,109	)	$	297	$	434		$	35,672	$	—	$	35,672
Unsecured	960		(18		)	68		178			1,188		—		1,188
Real estate:
One-to-four family residential	599		(307		)	117		236			645		11		634
Commercial & multifamily residential:
Commercial land	1,797		—			—		491			2,288		—		2,288
Income property	7,342		—			35		(574		)	6,803		26		6,777
Owner occupied	6,439		—			43		52			6,534		—		6,534
Real estate construction:
One-to-four family residential:
Land and acquisition	316		(14		)	20		187			509		—		509
Residential construction	669		—			9		431			1,109		—		1,109
Commercial & multifamily residential:
Income property	404		—			—		378			782		—		782
Owner occupied	1,192		—			—		576			1,768		—		1,768
Consumer	3,534		(428		)	285		(31		)	3,360		57		3,303
Purchased credit impaired	10,515		(1,939		)	1,144		(325		)	9,395		—		9,395
Unallocated	226		—			—		742			968		—		968
Total	$	70,043	$	(3,815	)	$	2,018	$	2,775		$	71,021	$	94	$	70,927

	Beginning Balance		Charge-offs			Recoveries		Provision (Recovery)			Ending Balance		Specific Reserve		General Allocation
Three months ended March 31, 2016	(in thousands)
Commercial business:
Secured	$	32,321	$	(3,770	)	$	611	$	2,952		$	32,114	$	2,500	$	29,614
Unsecured	1,299		(3		)	51		(47		)	1,300		—		1,300
Real estate:
One-to-four family residential	916		—			41		(303		)	654		—		654
Commercial & multifamily residential:
Commercial land	1,178		—			—		84			1,262		—		1,262
Income property	6,616		—			61		725			7,402		—		7,402
Owner occupied	5,550		—			8		528			6,086		—		6,086
Real estate construction:
One-to-four family residential:
Land and acquisition	339		—			51		250			640		—		640
Residential construction	733		—			203		513			1,449		—		1,449
Commercial & multifamily residential:
Income property	388		—			1		326			715		—		715
Owner occupied	1,006		—			—		204			1,210		—		1,210
Consumer	3,531		(266		)	165		(62		)	3,368		15		3,353
Purchased credit impaired	13,726		(2,866		)	1,551		653			13,064		—		13,064
Unallocated	569		—			—		(569		)	—		—		—
Total	$	68,172	$	(6,905	)	$	2,743	$	5,254		$	69,264	$	2,515	$	66,749

18

Changes in the allowance for unfunded commitments and letters of credit, a component of “Other liabilities” in the Consolidated Balance Sheets, are summarized as follows:

	Three Months Ended
	March 31,
	2017		2016
	(in thousands)
Balance at beginning of period	$	2,705	$	2,930
Net changes in the allowance for unfunded commitments and letters of credit	850		—
Balance at end of period	$	3,555	$	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.

19

The following is an analysis of the credit quality of our loan portfolio, excluding PCI loans, as of March 31, 2017 and December 31, 2016:

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
March 31, 2017	(in thousands)
Loans, excluding PCI loans:
Commercial business:
Secured	$	2,297,687	$	40,267	$	126,506	$	—	$	—	$	2,464,460
Unsecured	89,171		850		452		—		—		90,473
Real estate:
One-to-four family residential	169,158		—		1,041		—		—		170,199
Commercial and multifamily residential:
Commercial land	270,840		5,199		7,252		—		—		283,291
Income property	1,345,290		6,321		18,464		—		—		1,370,075
Owner occupied	1,077,648		3,673		30,003		—		—		1,111,324
Real estate construction:
One-to-four family residential:
Land and acquisition	6,799		—		—		—		—		6,799
Residential construction	107,571		—		213		—		—		107,784
Commercial and multifamily residential:
Income property	106,227		—		—		—		—		106,227
Owner occupied	60,315		—		4,050		—		—		64,365
Consumer	307,559		1		6,675		—		—		314,235
Total	$	5,838,265	$	56,311	$	194,656	$	—	$	—	6,089,232
Less:
Allowance for loan and lease losses											61,626
Loans, excluding PCI loans, net											$	6,027,606

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
December 31, 2016	(in thousands)
Loans, excluding PCI loans:
Commercial business:
Secured	$	2,289,307	$	65,846	$	96,437	$	—	$	—	$	2,451,590
Unsecured	93,721		800		216		—		—		94,737
Real estate:
One-to-four family residential	164,797		395		2,740		—		—		167,932
Commercial and multifamily residential:
Commercial land	263,195		3,228		4,391		—		—		270,814
Income property	1,341,978		17,902		9,866		—		—		1,369,746
Owner occupied	1,027,019		6,608		26,351		—		—		1,059,978
Real estate construction:
One-to-four family residential:
Land and acquisition	11,541		—		15		—		—		11,556
Residential construction	108,941		—		688		—		—		109,629
Commercial and multifamily residential:
Income property	103,779		—		—		—		—		103,779
Owner occupied	98,948		88		4,444		—		—		103,480
Consumer	317,728		—		6,794		—		—		324,522
Total	$	5,820,954	$	94,867	$	151,942	$	—	$	—	6,067,763
Less:
Allowance for loan and lease losses											59,528
Loans, excluding PCI loans, net											$	6,008,235

20

The following is an analysis of the credit quality of our PCI loan portfolio as of March 31, 2017 and December 31, 2016:

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
March 31, 2017	(in thousands)
PCI loans:
Commercial business:
Secured	$	18,443	$	89	$	1,022	$	—	$	—	$	19,554
Unsecured	738		—		—		—		—		738
Real estate:
One-to-four family residential	16,571		—		1,037		—		—		17,608
Commercial and multifamily residential:
Commercial land	8,703		2,032		—		—		—		10,735
Income property	27,857		—		138		—		—		27,995
Owner occupied	53,380		—		820		—		—		54,200
Real estate construction:
One-to-four family residential:
Land and acquisition	401		—		78		—		—		479
Residential construction	—		—		—		—		—		—
Commercial and multifamily residential:
Income property	799		—		—		—		—		799
Owner occupied	290		—		—		—		—		290
Consumer	16,045		—		440		—		—		16,485
Total	$	143,227	$	2,121	$	3,535	$	—	$	—	148,883
Less:
Valuation discount resulting from acquisition accounting											9,979
Allowance for loan losses											9,395
PCI loans, net											$	129,509

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
December 31, 2016	(in thousands)
PCI loans:
Commercial business:
Secured	$	18,824	$	92	$	1,954	$	—	$	—	$	20,870
Unsecured	736		—		—		—		—		736
Real estate:
One-to-four family residential	19,293		—		1,350		—		—		20,643
Commercial and multifamily residential:
Commercial land	7,333		—		213		—		—		7,546
Income property	31,042		—		1,678		—		—		32,720
Owner occupied	53,623		—		906		—		—		54,529
Real estate construction:
One-to-four family residential:
Land and acquisition	744		—		88		—		—		832
Residential construction	—		—		—		—		—		—
Commercial and multifamily residential:
Income property	1,217		—		—		—		—		1,217
Owner occupied	509		—		—		—		—		509
Consumer	17,202		—		447		—		—		17,649
Total	$	150,523	$	92	$	6,636	$	—	$	—	157,251
Less:
Valuation discount resulting from acquisition accounting											11,591
Allowance for loan losses											10,515
PCI loans, net											$	135,145

21

6. Other Real Estate Owned (“OREO”)

The following tables set forth activity in OREO for the three months ended March 31, 2017 and 2016:

	Three Months Ended March 31,
	2017			2016
	(in thousands)
Balance, beginning of period	$	5,998		$	13,738
Transfers in	—			105
Valuation adjustments	(193		)	(137		)
Proceeds from sale of OREO property	(1,275		)	(1,326		)
Gain (loss) on sale of OREO, net	(11		)	47
Balance, end of period	$	4,519		$	12,427

At March 31, 2017, the carrying amount of foreclosed residential real estate properties held as a result of obtaining physical possession was $379 thousand and the recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process was $675 thousand.

7. 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 March 31, 2017, the net present value of the Bank’s estimated clawback liability was $5.4 million, which was included in “Other liabilities” in the Consolidated Balance Sheets.

At March 31, 2017, the FDIC loss-sharing asset was comprised of a $2.5 million FDIC indemnification asset and a $773 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.

22

The following table shows a detailed analysis of the FDIC loss-sharing asset for the three months ended March 31, 2017 and 2016:

	Three Months Ended March 31,
	2017			2016
	(in thousands)
Balance at beginning of period	$	3,535		$	6,568
Adjustments not reflected in income:
Cash paid to the FDIC, net	184			353
FDIC reimbursable losses (recoveries), net	(206		)	136
Adjustments reflected in income:
Amortization, net	(315		)	(1,332		)
Loan impairment	40			147
Sale of other real estate	7			144
Valuation adjustments of other real estate owned	—			18
Other	(6		)	(80		)
Balance at end of period	$	3,239		$	5,954

The following table presents information about the composition of the FDIC loss-sharing asset, the clawback liability, the non-single family and the single family covered assets as of the date indicated:

	March 31, 2017
	Columbia River Bank		American Marine Bank		Summit Bank		First Heritage Bank		Total
	(in thousands)
FDIC loss-sharing asset (liability)	$	158	$	1,676	$	1,313	$	92	$	3,239
Clawback liability	$	3,362	$	1,275	$	—	$	743	$	5,380
Non-single family covered assets	$	50,590	$	8,885	$	4,788	$	9,728	$	73,991
Single family covered assets	$	5,721	$	15,319	$	4,182	$	1,223	$	26,445
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
Clawback settlement dates	First Quarter 2020		First Quarter 2020		Third Quarter 2021		Third Quarter 2021

8. Goodwill and Other Intangible Assets

In accordance with the Intangibles – Goodwill and Other topic of the FASB ASC, goodwill is not amortized but is reviewed for potential impairment at the reporting unit level. Management analyzes its goodwill for impairment on an annual basis on July 31 and between annual tests in certain circumstances such as material adverse changes in legal, business, regulatory and economic factors. An impairment loss is recorded to the extent that the carrying amount of goodwill exceeds its implied fair value.

The core deposit intangible (“CDI”) is evaluated for impairment if events and circumstances indicate a possible impairment. The CDI is amortized on an accelerated basis over an estimated life of 10 years.

23

The following table sets forth activity for goodwill and other intangible assets for the periods indicated:

	Three Months Ended March 31,
	2017			2016
	(in thousands)
Goodwill
Total goodwill	$	382,762		$	382,762
Other intangible assets, net
Core deposit intangible:
Gross core deposit intangible balance at beginning of period	58,598			58,598
Accumulated amortization at beginning of period	(41,886		)	(35,940		)
Core deposit intangible, net at beginning of period	16,712			22,658
CDI current period amortization	(1,349		)	(1,583		)
Total core deposit intangible, net at end of period	15,363			21,075
Intangible assets not subject to amortization	919			919
Other intangible assets, net at end of period	16,282			21,994
Total goodwill and other intangible assets at end of period	$	399,044		$	404,756

The following table provides the estimated future amortization expense of core deposit intangibles for the remaining nine months ending December 31, 2017 and the succeeding four years:

	Amount
	(in thousands)
Year ending December 31,
2017	$	3,564
2018	3,855
2019	2,951
2020	2,048
2021	1,440

9. 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 March 31, 2017 and December 31, 2016 was $336.1 million and $309.3 million, respectively. During the three months ended March 31, 2017, a mark-to-market gain of $4 thousand was recorded to “Other” noninterest expense. During the three months ended March 31, 2016, a mark-to-market loss of $8 thousand was recorded to “Other” noninterest expense.

The following table presents the fair value of derivatives not designated as hedging instruments at March 31, 2017 and December 31, 2016:

Asset Derivatives

Liability Derivatives

March 31, 2017

December 31, 2016

March 31, 2017

December 31, 2016

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

(in thousands)

Interest rate contracts

Other assets

$

8,598

Other assets

$

9,012

Other liabilities

$

8,618

Other liabilities

$

9,036

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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
March 31, 2017	(in thousands)
Assets
Interest rate contracts	$	8,598	$	—	$	8,598	$	—		$	8,598
Liabilities
Interest rate contracts	$	8,618	$	—	$	8,618	$	(8,618	)	$	—
Repurchase agreements	$	46,914	$	—	$	46,914	$	(46,914	)	$	—
December 31, 2016
Assets
Interest rate contracts	$	9,012	$	—	$	9,012	$	—		$	9,012
Liabilities
Interest rate contracts	$	9,036	$	—	$	9,036	$	(9,036	)	$	—
Repurchase agreements	$	80,822	$	—	$	80,822	$	(80,822	)	$	—

The following table presents the class of collateral pledged for repurchase agreements as well as the remaining contractual maturity of the repurchase agreements:

	Remaining contractual maturity of the agreements
	Overnight and continuous		Up to 30 days		30 - 90 days		Greater than 90 days		Total
March 31, 2017	(in thousands)
Class of collateral pledged for repurchase agreements
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	21,914	$	—	$	—	$	25,000	$	46,914
Gross amount of recognized liabilities for repurchase agreements									46,914
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.

10. Commitments and Contingent Liabilities

Lease Commitments: The Company’s lease commitments consist primarily of leased locations under various non-cancellable operating leases that expire between 2017 and 2043. The majority of the leases contain renewal options and provisions for increases in rental rates based on an agreed upon index or predetermined escalation schedule.

25

Sale-leaseback transaction: On August 24, 2016, the Company sold one of its Washington facilities and leased back the portion of the facility utilized for branch operations. The lease term is through July 2026, with monthly payments of approximately $12 thousand. The resulting gain on sale of $742 thousand was deferred in accordance with the Leases topic of the FASB ASC and is being amortized over the life of the respective lease. At March 31, 2017, the deferred gain was $696 thousand and is a component of "Other liabilities" in the Consolidated Balance Sheets.

Financial Instruments with Off-Balance Sheet Risk: In the normal course of business, the Company makes loan commitments (typically unfunded loans and unused lines of credit) and issues standby letters of credit to accommodate the financial needs of its customers. At March 31, 2017 and December 31, 2016, the Company’s loan commitments amounted to$2.23 billion and $2.17 billion, respectively.

Standby letters of credit commit the Company to make payments on behalf of customers under specified conditions. Historically, no significant losses have been incurred by the Company under standby letters of credit. Both arrangements have credit risk essentially the same as that involved in extending loans to customers and are subject to the Company’s normal credit policies, including collateral requirements, where appropriate. Standby letters of credit were $47.6 million and $49.7 million at March 31, 2017 and December 31, 2016, respectively. In addition, commitments under commercial letters of credit used to facilitate customers’ trade transactions and other off-balance sheet liabilities amounted to $3.0 million and $3.4 million at March 31, 2017 and December 31, 2016, respectively.

Legal Proceedings: The Company and its subsidiaries are from time to time defendants in and are threatened with various legal proceedings arising from their regular business activities. Management, after consulting with legal counsel, is of the opinion that the ultimate liability, if any, resulting from these pending or threatened actions and proceedings will not have a material effect on the financial statements of the Company.

11. Shareholders’ Equity

Preferred Stock: In conjunction with the 2013 acquisition of West Coast Bancorp, the Company issued 8,782 shares of mandatorily convertible cumulative participating preferred stock, Series B (“Series B Preferred Stock”). On January 12, 2017, all outstanding shares of Series B Preferred Stock were converted to Company common stock.

Dividends: On January 26, 2017, the Company declared a quarterly cash dividend of $0.22 per common share payable on February 22, 2017 to shareholders of record at the close of business on February 8, 2017.

Subsequent to quarter end, on April 27, 2017, the Company declared a regular quarterly cash dividend of $0.22 per common share payable on May 24, 2017 to shareholders of record at the close of business on May 10, 2017.

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.

26

12. Accumulated Other Comprehensive Loss

The following table shows changes in accumulated other comprehensive income (loss) by component for the three month periods ended March 31, 2017 and 2016:

	Unrealized Gains and Losses on Available-for-Sale Securities (1)			Unrealized Gains and Losses on Pension Plan Liability (1)			Total (1)
Three months ended March 31, 2017	(in thousands)
Beginning balance	$	(12,704	)	$	(6,295	)	$	(18,999	)
Other comprehensive income before reclassifications	1,702			4,604			6,306
Amounts reclassified from accumulated other comprehensive income	—			87			87
Net current-period other comprehensive income	1,702			4,691			6,393
Ending balance	$	(11,002	)	$	(1,604	)	$	(12,606	)
Three months ended March 31, 2016
Beginning balance	$	386		$	(6,681	)	$	(6,295	)
Other comprehensive income before reclassifications	18,770			—			18,770
Amounts reclassified from accumulated other comprehensive income (loss)	(238		)	106			(132		)
Net current-period other comprehensive income	18,532			106			18,638
Ending balance	$	18,918		$	(6,575	)	$	12,343

__________

(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 month periods ended March 31, 2017 and 2016:

	Amount Reclassified from Accumulated Other Comprehensive Income (Loss)
	Three Months Ended March 31,						Affected line Item in the Consolidated
	2017			2016			Statement of Income
	(in thousands)
Unrealized gains and losses on available-for-sale securities
Investment securities gains	$	—		$	373		Investment securities gains, net
	—			373			Total before tax
	—			(135		)	Income tax provision
	$	—		$	238		Net of tax
Amortization of pension plan liability
Actuarial losses	$	(136	)	$	(167	)	Compensation and employee benefits
	(136		)	(167		)	Total before tax
	49			61			Income tax benefit
	$	(87	)	$	(106	)	Net of tax

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13. 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.

28

The following table sets forth the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis at March 31, 2017 and December 31, 2016 by level within the fair value hierarchy. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement:

	Fair value		Fair Value Measurements at Reporting Date Using
			Level 1		Level 2		Level 3
March 31, 2017	(in thousands)
Assets
Securities available for sale:
U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations	$	1,486,498	$	—	$	1,486,498	$	—
State and municipal debt securities	487,355		—		487,355		—
U.S. government agency and government-sponsored enterprise securities	352,183		—		352,183		—
U.S. government securities	252		252		—		—
Other securities	5,071		—		5,071		—
Total securities available for sale	$	2,331,359	$	252	$	2,331,107	$	—
Other assets (Interest rate contracts)	$	8,598	$	—	$	8,598	$	—
Liabilities
Other liabilities (Interest rate contracts)	$	8,618	$	—	$	8,618	$	—

	Fair value		Fair Value Measurements at Reporting Date Using
			Level 1		Level 2		Level 3
December 31, 2016	(in thousands)
Assets
Securities available for sale:
U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations	$	1,465,732	$	—	$	1,465,732	$	—
State and municipal debt securities	475,060		—		475,060		—
U.S. government agency and government-sponsored enterprise securities	331,902		—		331,902		—
U.S. government securities	800		800		—		—
Other securities	5,083		—		5,083		—
Total securities available for sale	$	2,278,577	$	800	$	2,277,777	$	—
Other assets (Interest rate contracts)	$	9,012	$	—	$	9,012	$	—
Liabilities
Other liabilities (Interest rate contracts)	$	9,036	$	—	$	9,036	$	—

There were no transfers between Level 1 and Level 2 of the valuation hierarchy during the three month periods ended March 31, 2017 and 2016. The Company recognizes transfers between levels of the valuation hierarchy based on the valuation level at the end of the reporting period.

29

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 March 31, 2017		Fair Value Measurements at Reporting Date Using						Losses During the Three Months Ended March 31, 2017
			Level 1		Level 2		Level 3
	(in thousands)
OREO	$	1,260	$	—	$	—	$	1,260	$	193
	$	1,260	$	—	$	—	$	1,260	$	193

	Fair value at March 31, 2016		Fair Value Measurements at Reporting Date Using						Losses During the Three Months Ended March 31, 2016
			Level 1		Level 2		Level 3
	(in thousands)
Impaired loans	$	10,681	$	—	$	—	$	10,681	$	2,676
OREO	2,553		—		—		2,553		137
	$	13,234	$	—	$	—	$	13,234	$	2,813

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.

30

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 March 31, 2017		Valuation Technique	Unobservable Input	Range (Weighted Average) (1)
	(dollars in thousands)
OREO	$	1,260	Fair Market Value of Collateral	Adjustment to Appraisal Value	N/A (2)
(1) Discount applied to appraisal value.
(2) Quantitative disclosures are not provided for OREO because there were no adjustments made to the appraisal values.

	Fair value at March 31, 2016		Valuation Technique	Unobservable Input	Range (Weighted Average) (1)
	(dollars in thousands)
Impaired loans	$	10,681	Fair Market Value of Collateral	Adjustment to Stated Value	0% - 7% (6%)
OREO	$	2,553	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 OREO because there were no adjustments made to the appraisal values.

31

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 March 31, 2017 or December 31, 2016, for loans which mirror the attributes of the loans with similar rate structures and average maturities. The fair values resulting from these calculations are reduced by an amount representing the change in estimated fair value attributable to changes in borrowers’ credit quality since the loans were originated. For nonperforming loans, fair value is estimated by applying a valuation discount based upon loan sales data from the FDIC. For PCI loans, fair value is estimated by discounting the expected future cash flows using a lending rate that would have been offered on March 31, 2017 (Level 3).

FDIC loss-sharing asset —The fair value of the FDIC loss-sharing asset is estimated based on discounting the expected future cash flows using an estimated market rate (Level 3).

Interest rate contracts—Interest rate swap positions are valued in discounted cash flow models, which use readily observable market parameters as their basis (Level 2).

Deposits—For deposits with no contractual maturity, the fair value is equal to the carrying value (Level 1). The fair value of fixed maturity deposits is based on discounted cash flows using the difference between the deposit rate and current market rates for deposits of similar remaining maturities (Level 2).

FHLB advances—The fair value of FHLB advances is estimated based on discounting the future cash flows using the market rate currently offered (Level 2).

Repurchase Agreements—The fair value of term repurchase agreements is estimated based on discounting the future cash flows using the market rate currently offered. The carrying amount of sweep repurchase agreements approximates their fair values due to the short period of time between repricing dates (Level 2).

Other Financial Instruments—The majority of our commitments to extend credit and standby letters of credit carry current market interest rates if converted to loans, as such, carrying value is assumed to equal fair value.

32

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 March 31, 2017 and December 31, 2016:

	March 31, 2017
	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
	(in thousands)
Assets
Cash and due from banks	$	169,697	$	169,697	$	169,697	$	—	$	—
Interest-earning deposits with banks	13,124		13,124		13,124		—		—
Securities available for sale	2,331,359		2,331,359		252		2,331,107		—
FHLB stock	10,600		10,600		—		10,600		—
Loans held for sale	3,245		3,245		—		3,245		—
Loans	6,157,115		6,042,895		—		—		6,042,895
FDIC loss-sharing asset	3,239		921		—		—		921
Interest rate contracts	8,598		8,598		—		8,598		—
Liabilities
Deposits	$	8,088,827	$	8,084,550	$	7,699,879	$	384,671	$	—
FHLB advances	15,483		16,110		—		16,110		—
Repurchase agreements	46,914		47,099		—		47,099		—
Interest rate contracts	8,618		8,618		—		8,618		—

	December 31, 2016
	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
	(in thousands)
Assets
Cash and due from banks	$	193,038	$	193,038	$	193,038	$	—	$	—
Interest-earning deposits with banks	31,200		31,200		31,200		—		—
Securities available for sale	2,278,577		2,278,577		800		2,277,777		—
FHLB stock	10,240		10,240		—		10,240		—
Loans held for sale	5,846		5,846		—		5,846		—
Loans	6,143,380		6,040,439		—		—		6,040,439
FDIC loss-sharing asset	3,535		867		—		—		867
Interest rate contracts	9,012		9,012		—		9,012		—
Liabilities
Deposits	$	8,059,415	$	8,055,168	$	7,653,122	$	402,046	$	—
FHLB advances	6,493		7,070		—		7,070		—
Repurchase agreements	80,822		81,131		—		81,131		—
Interest rate contracts	9,036		9,036		—		9,036		—

14. 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.

33

The following table sets forth the computation of basic and diluted earnings per share for the three months ended March 31, 2017 and 2016:

	Three Months Ended
	March 31,
	2017		2016
	(in thousands except per share)
Basic EPS:
Net income	$	29,199	$	21,259
Less: Earnings allocated to participating securities:
Preferred shares	3		39
Nonvested restricted shares	397		247
Earnings allocated to common shareholders	$	28,799	$	20,973
Weighted average common shares outstanding	57,388		57,114
Basic earnings per common share	$	0.50	$	0.37
Diluted EPS:
Earnings allocated to common shareholders	$	28,799	$	20,973
Weighted average common shares outstanding	57,388		57,114
Dilutive effect of equity awards	6		11
Weighted average diluted common shares outstanding	57,394		57,125
Diluted earnings per common share	$	0.50	$	0.37
Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive	14		27

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Item 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

This discussion should be read in conjunction with the unaudited Consolidated Financial Statements of Columbia Banking System, Inc. (referred to in this report as “we”, “our”, “Columbia” and “the Company”) and notes thereto presented elsewhere in this report and with the December 31, 2016 audited Consolidated Financial Statements and its accompanying notes included in our Annual Report on Form 10-K. In the following discussion, unless otherwise noted, references to increases or decreases in average balances in items of income and expense for a particular period and balances at a particular date refer to the comparison with corresponding amounts for the period or date one year earlier.

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

This quarterly report on Form 10-Q may contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements include, but are not limited to, statements about our plans, objectives, expectations and intentions that are not historical facts, and statements identified by words such as “expects,” “anticipates,” “intends,” “plans,” “believes,” “should,” “projects,” “seeks,” “estimates” or the negative version of those words or other comparable words or phrases of a future or forward-looking nature. Forward-looking statements are based on current beliefs and expectations of management and are inherently subject to significant business, economic and competitive uncertainties and contingencies, many of which are beyond our control. In addition, forward-looking statements are subject to assumptions with respect to future business strategies and decisions that are subject to change. In addition to the factors set forth in the section titled “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in this report and the factors set forth in the section titled “Risk Factors” in the Company’s Form 10-K, the following factors, among others, could cause actual results to differ materially from the anticipated results expressed or implied by forward-looking statements:

• national and global economic conditions could be less favorable than expected or could have a more direct and pronounced effect on us than expected and adversely affect our ability to continue internal growth and maintain the quality of our earning assets;

• the local housing/real estate markets where we operate and make loans could face challenges;

• the risks presented by the economy, which could adversely affect credit quality, collateral values, including real estate collateral, investment values, liquidity and loan originations and loan portfolio delinquency rates;

• the efficiencies and enhanced financial and operating performance we expect to realize from investments in personnel, acquisitions (including the pending acquisition of Pacific Continental Corporation (“Pacific Continental”)), and infrastructure may not be realized;

• the ability to complete the proposed acquisition of Pacific Continental in a timely manner or at all because required regulatory, shareholder or other approvals and other conditions to closing are not received or satisfied on a timely basis or at all, or to complete future acquisitions;

• the ability to successfully integrate Pacific Continental if the acquisition is completed, or to integrate future acquired entities;

• interest rate changes could significantly reduce net interest income and negatively affect funding sources;

• projected business increases following strategic expansion could be lower than expected;

• changes in the scope and cost of Federal Deposit Insurance Corporation (“FDIC”) insurance and other coverages;

• the impact of acquired loans, including purchased credit impaired loans, on our earnings;

• changes in laws and regulations affecting our businesses, including changes in the enforcement and interpretation of such laws and regulations by applicable governmental and regulatory agencies;

• competition among financial institutions and nontraditional providers of financial services could increase significantly;

• continued consolidation in the Northwest financial services industry resulting in the creation of larger financial institutions that may have greater resources could change the competitive landscape;

• the goodwill we have recorded in connection with acquisitions could become impaired, which may have an adverse impact on our earnings and capital;

• our ability to identify and address cyber-security risks, including security breaches, “denial of service attacks,” “hacking” and identity theft;

• any material failure or interruption of our information and communications systems or inability to keep pace with technological changes;

• our ability to effectively manage credit risk, interest rate risk, market risk, operational risk, legal risk, liquidity risk and regulatory and compliance risk;

• the effect of geopolitical instability, including wars, conflicts and terrorist attacks;

• our profitability measures could be adversely affected if we are unable to effectively manage our capital;

• natural disasters, including earthquakes, tsunamis, flooding, fires and other unexpected events; and

• the effects of any damage to our reputation resulting from developments related to any of the items identified above.

35

You should take into account that forward-looking statements speak only as of the date of this report. Given the described uncertainties and risks, we cannot guarantee our future performance or results of operations and you should not place undue reliance on forward-looking statements. We undertake no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required under federal securities laws.

CRITICAL ACCOUNTING POLICIES

Management has identified the accounting policies related to the allowance for loan and lease losses (the “allowance”), business combinations and the valuation and recoverability of goodwill as critical to an understanding of our financial statements. These policies and related estimates are discussed in “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations” under the headings “Allowance for Loan and Lease Losses,” “Business Combinations” and “Valuation and Recoverability of Goodwill” in our 2016 Annual Report on Form 10-K. There have not been any material changes in our critical accounting policies as compared to those disclosed in our 2016 Annual Report on Form 10-K.

RESULTS OF OPERATIONS

Our results of operations are dependent to a large degree on our net interest income. We also generate noninterest income from our broad range of products and services including treasury management, wealth management, debit and credit cards and merchant card processing. Our operating expenses consist primarily of compensation and employee benefits, occupancy, data processing and legal and professional fees. Like most financial institutions, our interest income and cost of funds are affected significantly by general economic conditions, particularly changes in market interest rates, and by government policies and actions of regulatory authorities.

Earnings Summary

The Company reported net income for the first quarter of $29.2 million or $0.50 per diluted common share, compared to $21.3 million or $0.37 per diluted common share for the first quarter of 2016. Net interest income for the three months ended March 31, 2017 was $86.7 million, an increase of $6.5 million from the prior year period. The increase was a result of higher interest income on loans and taxable securities due to higher volume of such interest-earning assets as well as lower market-driven premium amortization on taxable securities. Noninterest income for the current quarter was $24.9 million, an increase of $4.2 million from the prior year period. The increase was primarily due to a $1.5 million bank owned life insurance benefit in the current quarter, higher loan fee income and a $573 thousand benefit from re-measuring to zero our estimated mortgage repurchase liability from a previous acquisition.

The provision for loan and lease losses for the first quarter of 2017 was $2.8 million compared to a provision of $5.3 million during the first quarter of 2016. The provision recorded in the first quarter of 2017 was due to the recording of a $3.1 million provision on loans, excluding PCI loans, and a $325 thousand provision recapture related to PCI loans.

Total noninterest expense for the quarter ended March 31, 2017 was $69.0 million, an increase from $65.1 million for the first quarter of 2016. The increase from the prior year period was primarily due to higher compensation and employee benefits expense and higher other noninterest expense.

36

Net Interest Income

The following table sets forth the average balances of all major categories of interest-earning assets and interest-bearing liabilities, the total dollar amounts of interest income on interest-earning assets and interest expense on interest-bearing liabilities, the average yield earned on interest-earning assets and average cost of interest-bearing liabilities by category and, in total, net interest income and net interest margin:

	Three Months Ended March 31,						Three Months Ended March 31,
	2017						2016
	Average Balances		Interest Earned / Paid		Average Rate		Average Balances		Interest Earned / Paid		Average Rate
	(dollars in thousands)
ASSETS
Loans, net (1)(2)	$	6,198,215	$	75,514	4.87	%	$	5,827,440	$	71,298	4.89	%
Taxable securities	1,861,627		10,986		2.36	%	1,689,289		8,017		1.90	%
Tax exempt securities (2)	448,863		4,140		3.69	%	458,168		4,312		3.76	%
Interest-earning deposits with banks	11,586		19		0.66	%	31,048		38		0.49	%
Total interest-earning assets	8,520,291		$	90,659	4.26	%	8,005,945		$	83,665	4.18	%
Other earning assets	178,091						154,336
Noninterest-earning assets	775,316						788,931
Total assets	$	9,473,698					$	8,949,212
LIABILITIES AND SHAREHOLDERS’ EQUITY
Certificates of deposit	$	399,306	$	95	0.10	%	$	448,915	$	144	0.13	%
Savings accounts	738,631		19		0.01	%	675,876		17		0.01	%
Interest-bearing demand	972,560		159		0.07	%	927,948		169		0.07	%
Money market accounts	2,008,107		514		0.10	%	1,930,575		412		0.09	%
Total interest-bearing deposits	4,118,604		787		0.08	%	3,983,314		742		0.07	%
Federal Home Loan Bank advances	81,577		225		1.10	%	50,569		124		0.98	%
Other borrowings	63,479		129		0.81	%	90,699		138		0.61	%
Total interest-bearing liabilities	4,263,660		$	1,141	0.11	%	4,124,582		$	1,004	0.10	%
Noninterest-bearing deposits	3,836,049						3,462,379
Other noninterest-bearing liabilities	112,337						103,840
Shareholders’ equity	1,261,652						1,258,411
Total liabilities & shareholders’ equity	$	9,473,698					$	8,949,212
Net interest income (tax equivalent)			$	89,518					$	82,661
Net interest margin (tax equivalent)					4.20	%					4.13	%

__________

(1) Nonaccrual loans have been included in the tables as loans carrying a zero yield. Amortized net deferred loan fees and net unearned discounts on acquired loans were included in the interest income calculations. The amortization of net deferred loan fees was $1.6 million and $1.1 million for the three month periods ended March 31, 2017 and 2016, respectively. The incremental accretion income on acquired loans was $4.1 million and $4.7 million for the three months ended March 31, 2017 and 2016, respectively.

(2) Tax-exempt income is calculated on a tax equivalent basis. The tax equivalent yield adjustment to interest earned on loans was $1.4 million and $982 thousand for the three months ended March 31, 2017 and 2016, respectively. The tax equivalent yield adjustment to interest earned on tax exempt securities was $1.4 million and $1.5 million for the three months ended March 31, 2017 and 2016, respectively.

37

The following table sets forth the total dollar amount of change in interest income and interest expense. The changes have been segregated for each major category of interest-earning assets and interest-bearing liabilities into amounts attributable to changes in volume and changes in rates. Changes attributable to the combined effect of volume and interest rates have been allocated proportionately to the changes due to volume and the changes due to interest rates:

	Three Months Ended March 31, 2017 Compared to 2016 Increase (Decrease) Due to
	Volume			Rate			Total
	(in thousands)
Interest Income
Loans, net	$	4,518		$	(302	)	$	4,216
Taxable securities	877			2,092			2,969
Tax exempt securities	(87		)	(85		)	(172		)
Interest earning deposits with banks	(29		)	10			(19		)
Interest income	$	5,279		$	1,715		$	6,994
Interest Expense
Deposits:
Certificates of deposit	$	(15	)	$	(34	)	$	(49	)
Savings accounts	2			—			2
Interest-bearing demand	8			(18		)	(10		)
Money market accounts	17			85			102
Total interest on deposits	12			33			45
Federal Home Loan Bank advances	84			17			101
Other borrowings	71			(80		)	(9		)
Interest expense	$	167		$	(30	)	$	137

The following table shows the impact to interest income of incremental accretion income as well as the net interest margin and operating net interest margin for the periods presented:

	Three Months Ended March 31,
	2017			2016
	(dollars in thousands)
Incremental accretion income due to:
FDIC purchased credit impaired loans	$	2,117		$	1,657
Other acquired loans	1,948			3,073
Incremental accretion income	$	4,065		$	4,730
Net interest margin (tax equivalent)	4.20		%	4.13		%
Operating net interest margin(tax equivalent) (1)	4.09		%	4.03		%

__________

(1) Operating net interest margin (tax equivalent) is a non-GAAP measurement. See Non-GAAP measures section of Item 2, Management’s Discussion and Analysis.

Net interest income for the first quarter of 2017 was $86.7 million, up from $80.2 million for the same quarter in 2016. The increase was due to higher loan and securities volumes, as well as lower market-driven premium amortization on securities. These increases were partially offset by lower incremental accretion income on loans. As shown in the table above, incremental accretion income continued to decline which was reflective of the decrease in volume of acquired loans. Average interest-earning assets were up$514.3 million from the prior year period due to loan growth and purchases of investment securities. The Company’s net interest margin (tax equivalent) increased to 4.20% in the first quarter of 2017, from 4.13% for the prior year period. This increase was due to lower premium amortization on taxable securities. The Company’s operating net interest margin (tax equivalent) (see footnote 1 in prior table) increased to 4.09% from 4.03% also due to a combination of higher reinvestment rates and the previously mentioned lower market-driven premium amortization on taxable securities.

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Provision for Loan and Lease Losses

During the first quarter of 2017, the Company recorded a $2.8 million provision expense compared with a provision expense of $5.3 million during the first quarter of 2016. The $2.8 million net provision for loan and lease losses recorded during the current quarter was driven by loans, excluding PCI loans, which was $3.1 million. Net provision recapture for PCI loans was $325 thousand. The $3.1 million provision for loans, excluding PCI loans, was due to growth in the loan portfolio and net charge-off activity. The provision recapture recorded relating to PCI loans was due to the increase in the present value of expected future cash flows as remeasured during the current quarter, compared to the present value of expected future cash flows measured during the fourth quarter of 2016. The amount of provision was calculated in accordance with the Company’s methodology for determining the allowance, discussed in Note 5 to the Consolidated Financial Statements in “Item 1. Financial Statements (unaudited)” of this report.

Noninterest Income

The following table presents the significant components of noninterest income and the related dollar and percentage change from period to period:

	Three Months Ended March 31,
	2017			2016			$ Change			% Change
	(dollars in thousands)
Deposit account and treasury management fees	$	7,287		$	6,989		$	298		4	%
Card revenue	5,723			5,652			71			1	%
Financial services and trust revenue	2,839			2,821			18			1	%
Loan revenue	3,593			2,262			1,331			59	%
Merchant processing revenue	2,019			2,102			(83		)	(4	)%
Bank owned life insurance	1,280			1,116			164			15	%
Investment securities gains, net	—			373			(373		)	(100	)%
Change in FDIC loss-sharing asset	(274		)	(1,103		)	829			(75	)%
Other	2,392			434			1,958			451	%
Total noninterest income	$	24,859		$	20,646		$	4,213		20	%

Noninterest income was $24.9 million for the first quarter of 2017, compared to $20.6 million for the same period in 2016. The increase was due to higher loan fee revenue as well as higher other noninterest income. The increase in other noninterest income was due to a $1.5 million bank owned life insurance benefit in the current quarter as well as a $573 thousand benefit from re-measuring to zero our estimated mortgage repurchase liability. The repurchase liability was initially established in 2013 in connection with a prior acquisition.

39

Noninterest Expense

The following table presents the significant components of noninterest expense and the related dollar and percentage change from period to period:

	Three Months Ended March 31,
	2017		2016		$ Change			% Change
	(dollars in thousands)
Compensation and employee benefits	$	40,825	$	36,319	$	4,506		12	%
All other noninterest expense:
Occupancy	7,191		10,173		(2,982		)	(29	)%
Merchant processing expense	1,049		1,033		16			2	%
Advertising and promotion	817		842		(25		)	(3	)%
Data processing	4,208		4,146		62			1	%
Legal and professional services	3,369		1,325		2,044			154	%
Taxes, license and fees	1,241		1,290		(49		)	(4	)%
Regulatory premiums	776		1,141		(365		)	(32	)%
Net cost (benefit) of operation of other real estate owned	152		104		48			46	%
Amortization of intangibles	1,349		1,583		(234		)	(15	)%
Other	8,009		7,118		891			13	%
Total all other noninterest expense	28,161		28,755		(594		)	(2	)%
Total noninterest expense	$	68,986	$	65,074	$	3,912		6	%

The following table shows the impact of the acquisition-related expenses for the periods indicated to the various components of noninterest expense:

	Three Months Ended
	March 31,
	2017		2016
	(in thousands)
Acquisition-related expenses:
Compensation and employee benefits	$	—	$	35
Occupancy	1		2,383
Advertising and promotion	6		—
Data processing	—		18
Legal and professional fees	1,311		—
Other	46		—
Total impact of acquisition-related expense to noninterest expense	$	1,364	$	2,436
Acquisition-related expenses by transaction:
Pacific Continental (1)	$	1,364	$	—
Intermountain	—		2,436
Total impact of acquisition-related expense to noninterest expense	$	1,364	$	2,436

__________

(1) Definitive agreements have been signed; however, completion of this transaction is pending as of the date of this filing.

Total noninterest expense for the first quarter of 2017 was $69.0 million, an increase of $3.9 million, or 6% from the prior year period. The increase was due to higher compensation and employee benefits, driven additional stock compensation expense related to the immediate vesting of certain restricted share awards, of which $834 thousand related to the passing of our former CEO, higher incentive expense in the current quarter relative to the Company’s overall financial performance and higher salary expense over the prior year period. Also contributing to the increased noninterest expense was higher other noninterest expense due to the recording of an additional $850 thousand for the allowance for unfunded commitments and letters of credit.

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The following table presents selected items included in “Other” noninterest expense and the associated change from period to period:

	Three Months Ended March 31,						Increase (Decrease) Amount
	2017			2016
	(in thousands)
Postage	$	554		$	585		$	(31	)
Software support and maintenance	1,283			1,034			249
Supplies	409			455			(46		)
Loan expenses	284			307			(23		)
Dues and subscriptions	435			357			78
Insurance	459			475			(16		)
Card expenses	657			667			(10		)
Travel and entertainment	686			687			(1		)
Employee expenses	396			290			106
Sponsorships and charitable contributions	596			619			(23		)
Directors fees	233			192			41
Correspondent bank processing fees	132			132			—
Investor relations	36			40			(4		)
Other personal property owned	(2		)	(2		)	—
FDIC clawback expense	(54		)	209			(263		)
Fraud losses	171			66			105
Miscellaneous	1,734			1,005			729
Total other noninterest expense	$	8,009		$	7,118		$	891

Income Taxes

We recorded an income tax provision of $10.6 million for the first quarter of 2017, compared to a provision of $9.2 million for the same period in 2016, with effective tax rates of 27% for the first quarter of 2017 and 30% for the same period in 2016. Our effective tax rate remains lower than the statutory tax rate due to the amount of tax-exempt municipal securities held in the investment portfolio, tax-exempt earnings on bank owned life insurance and loans with favorable tax attributes. In addition, our effective tax rate was reduced in the current quarter due to the adoption of new share-based payment accounting (ASU 2016-09). For additional information, please refer to the Company’s annual report on Form 10-K for the year ended December 31, 2016 and Note 2 to the Consolidated Financial Statements in “Item 1. Financial Statements (unaudited)” of this report.

FINANCIAL CONDITION

Total assets were $9.53 billion as of March 31, 2017, an increase of $17.7 million from $9.51 billion at December 31, 2016. Loan growth of $14.7 million during the current year was driven by strong loan originations. Loan production was diversified across the portfolio, but was centered in commercial business and commercial real estate loans. Securities available for sale were $2.33 billion at March 31, 2017, an increase of $52.8 million from December 31, 2016. Total liabilities were $8.25 billion as of March 31, 2017, a decrease of $6.7 million from $8.26 billion at December 31, 2016. The decrease was primarily due to decreased securities sold under agreements to repurchase, partially offset by an increase in deposits.

Investment Securities Available for Sale

At March 31, 2017, the Company held investment securities totaling $2.33 billion compared to $2.28 billion at December 31, 2016. The increase in the investment securities portfolio from year-end is due to $109.0 million in purchases and a $2.7 million decrease in net unrealized loss of securities in the portfolio, partially offset by $55.4 million in principal payments and maturities and $3.5 million in premium amortization. The average duration of our investment portfolio was approximately 3 years and 11 months at March 31, 2017. This duration takes into account calls, where appropriate, and consensus prepayment speeds.

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The investment securities are used by the Company as a component of its balance sheet management strategies. From time-to-time, securities may be sold to reposition the portfolio in response to strategies developed by the Company’s asset liability management committee. In accordance with our investment strategy, management monitors market conditions with a view to realize gains on its available for sale securities portfolio when prudent.

The Company performs a quarterly assessment of the debt and equity securities in its investment portfolio that have an unrealized loss to determine whether the decline in the fair value of these securities below their amortized cost basis is other-than-temporary. Impairment is considered other-than-temporary when it becomes probable that the Company will be unable to recover the entire amortized cost basis of its investment. The Company’s impairment assessment takes into consideration factors such as the length of time and the extent to which the market value has been less than cost, defaults or deferrals of scheduled interest or principal, external credit ratings and recent downgrades, internal assessment of credit quality, and whether the Company intends to sell the security and whether it is more likely than not it will be required to sell the security prior to recovery of its amortized cost basis. If a decline in fair value is judged to be other-than-temporary, the cost basis of the individual security is written down to fair value which then becomes the new cost basis. The new cost basis is not adjusted for subsequent recoveries in fair value.

When there are credit losses associated with an impaired debt security and the Company does not have the intent to sell the security and it is more likely than not that it will not have to sell the security before recovery of its cost basis, the Company will separate the amount of the impairment into the amount that is credit-related and the amount related to non-credit factors. The credit-related impairment is recognized in earnings and the non-credit-related impairment is recognized in accumulated other comprehensive income.

At March 31, 2017, the market value of securities available for sale had a net unrealized loss of $17.8 million compared to a net unrealized loss of $20.5 million at December 31, 2016. The change in valuation was the result of fluctuations in market interest rates subsequent to purchase. At March 31, 2017, the Company had $1.56 billion of investment securities with gross unrealized losses of $28.8 million; however, we did not consider these investment securities to be other-than-temporarily impaired.

The following table sets forth our securities portfolio by type for the dates indicated:

	March 31, 2017		December 31, 2016
	(in thousands)
Securities Available for Sale
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	1,486,498	$	1,465,732
State and municipal securities	487,355		475,060
U.S. government and government-sponsored enterprise securities	352,183		331,902
U.S. government securities	252		800
Other securities	5,071		5,083
Total	$	2,331,359	$	2,278,577

For further information on our investment portfolio, see Note 3 of the Consolidated Financial Statements in “Item 1. Financial Statements (unaudited)” of this report.

Credit Risk Management

The extension of credit in the form of loans or other credit substitutes to individuals and businesses is one of our principal commerce activities. Our policies, 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.

In analyzing our existing portfolio, we review our consumer and residential loan portfolios by their performance as a pool of loans, since no single loan is individually significant or judged by its risk rating, size or potential risk of loss. In contrast, the monitoring process for the commercial business, real estate construction, and commercial real estate portfolios includes periodic reviews of individual loans with risk ratings assigned to each loan and performance judged on a loan-by-loan basis.

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. In the event that full collection of principal and interest is not reasonably

42

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. For additional discussion on our methodology in managing credit risk within our loan portfolio, see the “Allowance for Loan and Lease Losses” section in this Management’s Discussion and Analysis and Note 1 to the Consolidated Financial Statements in “Item 8. Financial Statements and Supplementary Data” of the Company’s 2016 Annual Report on Form 10-K.

Loan policies, credit quality criteria, portfolio guidelines and other controls are established under the guidance of our Chief Credit Officer and approved, as appropriate, by the board of directors. Credit Administration, together with the management loan committee, has the responsibility for administering the credit approval process. As another part of its control process, we use an internal credit review and examination function to provide reasonable assurance that loans and commitments are made and maintained as prescribed by our credit policies. This includes a review of documentation when the loan is initially extended and subsequent examination to ensure continued performance and proper risk assessment.

Loan Portfolio Analysis

Our wholly owned banking subsidiary Columbia State Bank is a full service commercial bank, which originates a wide variety of loans, and focuses its lending efforts on originating commercial business and commercial real estate loans.

The following table sets forth the Company’s loan portfolio by type of loan for the dates indicated:

	March 31, 2017			% of Total		December 31, 2016			% of Total
	(dollars in thousands)
Commercial business	$	2,559,247		41.1	%	$	2,551,054		41.1	%
Real estate:
One-to-four family residential	172,581			2.8	%	170,331			2.7	%
Commercial and multifamily residential	2,783,433			44.7	%	2,719,830			43.7	%
Total real estate	2,956,014			47.5	%	2,890,161			46.4	%
Real estate construction:
One-to-four family residential	115,219			1.8	%	121,887			2.0	%
Commercial and multifamily residential	172,895			2.8	%	209,118			3.4	%
Total real estate construction	288,114			4.6	%	331,005			5.4	%
Consumer	318,069			5.1	%	329,261			5.3	%
Purchased credit impaired	138,904			2.2	%	145,660			2.3	%
Subtotal	6,260,348			100.5	%	6,247,141			100.5	%
Less: Net unearned income	(32,212		)	(0.5	)%	(33,718		)	(0.5	)%
Loans, net of unearned income (before Allowance for Loan and Lease Losses)	$	6,228,136		100.0	%	$	6,213,423		100.0	%
Loans held for sale	$	3,245				$	5,846

Total loans increased$14.7 million from year-end 2016. The loan growth from substantial new loan production during the first quarter was tempered by contractual payments and prepayments. The loan portfolio continues to be diversified, with the intent to mitigate risk by monitoring concentration in any one sector. The $32.2 million in unearned income recorded at March 31, 2017 was comprised of $18.3 million in net purchase discounts and $13.9 million in deferred loan fees. The $33.7 million in unearned income recorded at December 31, 2016 consisted of $20.2 million in net purchase discounts and $13.5 million in deferred loan fees.

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The following table provides additional detail related to the net discount of acquired and purchased loans, excluding PCI loans, by acquisition:

	March 31, 2017			December 31, 2016
Acquisition:	(in thousands)
Intermountain	$	6,346		$	6,599
West Coast	12,246			13,957
Other	(291		)	(315		)
Total net discount at period end	$	18,301		$	20,241

Commercial Loans: We are committed to providing competitive commercial lending in our primary market areas. Management expects a continued focus within its commercial lending products and to emphasize, in particular, relationship banking with businesses and business owners.

Real Estate Loans: One-to-four family residential loans are secured by properties located within our primary market areas and, typically, have loan-to-value ratios of 80% or lower at origination. Our underwriting standards for commercial and multifamily residential loans generally require that the loan-to-value ratio for these loans not exceed 75% of appraised value, cost, or discounted cash flow value, as appropriate, and that commercial properties maintain debt coverage ratios (net operating income divided by annual debt servicing) of 1.2 or better. However, underwriting standards can be influenced by competition and other factors. We endeavor to maintain the highest practical underwriting standards while balancing the need to remain competitive in our lending practices.

Real Estate Construction Loans: We originate a variety of real estate construction loans. Underwriting guidelines for these loans vary by loan type but include loan-to-value limits, term limits and loan advance limits, as applicable. Our underwriting guidelines for commercial and multifamily residential real estate construction loans generally require that the loan-to-value ratio not exceed 75% and stabilized debt coverage ratios (net operating income divided by annual debt servicing) of 1.2 or better. As noted above, underwriting standards can be influenced by competition and other factors. However, we endeavor to maintain the highest practical underwriting standards while balancing the need to remain competitive in our lending practices.

Consumer Loans: Consumer loans include automobile loans, boat and recreational vehicle financing, home equity and home improvement loans and miscellaneous personal loans.

Foreign Loans: The Company has 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.

Purchased Credit Impaired Loans: PCI loans are comprised of loans and loan commitments acquired in connection with the 2011 FDIC-assisted acquisitions of First Heritage Bank and Summit Bank, as well as the 2010 FDIC-assisted acquisitions of Columbia River Bank and American Marine Bank. PCI loans are generally accounted for under ASC Topic 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality (“ASC 310-30”).

For additional information on our loan portfolio, including amounts pledged as collateral on borrowings, see Note 4 to the Consolidated Financial Statements in “Item 1. Financial Statements (unaudited)” of this report.

Nonperforming Assets

Nonperforming assets consist of: (i) nonaccrual loans, which generally are loans placed on a nonaccrual basis when the loan becomes past due 90 days or when there are otherwise serious doubts about the collectability of principal or interest within the existing terms of the loan, (ii) OREO and (iii) other personal property owned, if applicable.

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The following table sets forth, at the dates indicated, information with respect to our nonaccrual loans and total nonperforming assets:

	March 31, 2017			December 31, 2016
	(in thousands)
Nonperforming assets
Nonaccrual loans:
Commercial business	$	10,848		$	11,555
Real estate:
One-to-four family residential	450			568
Commercial and multifamily residential	10,237			11,187
Total real estate	10,687			11,755
Real estate construction:
One-to-four family residential	213			563
Total real estate construction	213			563
Consumer	3,799			3,883
Total nonaccrual loans	25,547			27,756
Other real estate owned and other personal property owned	4,519			5,998
Total nonperforming assets	$	30,066		$	33,754
Loans, net of unearned income	$	6,228,136		$	6,213,423
Total assets	$	9,527,272		$	9,509,607
Nonperforming loans to period end loans	0.41		%	0.45		%
Nonperforming assets to period end assets	0.32		%	0.35		%

At March 31, 2017, nonperforming assets were $30.1 million, compared to $33.8 million at December 31, 2016. Nonperforming assets decreased$3.7 million during the three months ended March 31, 2017. This decline was due to principal pay downs and charge-offs of nonaccrual loans as well as OREO sales.

Other Real Estate Owned: The following table sets forth activity in OREO for the periods indicated:

	Three Months Ended March 31,
	2017			2016
	(in thousands)
Balance, beginning of period	$	5,998		$	13,738
Transfers in	—			105
Valuation adjustments	(193		)	(137		)
Proceeds from sale of OREO property	(1,275		)	(1,326		)
Gain (loss) on sale of OREO, net	(11		)	47
Balance, end of period	$	4,519		$	12,427

Allowance for Loan and Lease Losses

The allowance for loan and lease losses (“ALLL”) is an accounting estimate of incurred credit losses in our loan portfolio at the balance sheet date. The provision for loan and lease losses is the expense recognized in the Consolidated Statements of Income to adjust the allowance to the levels deemed appropriate by management, as measured by the Company’s credit loss estimation methodologies. The allowance for unfunded commitments and letters of credit is maintained at a level believed by management to be sufficient to absorb estimated probable losses related to these unfunded credit facilities at the balance sheet date.

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At March 31, 2017, our allowance was $71.0 million, or 1.14% of total loans (excluding loans held for sale). This compares with an allowance of $70.0 million, or 1.13% of total loans (excluding loans held for sale) at December 31, 2016 and an allowance of $69.3 million or 1.18% of total loans (excluding loans held for sale) at March 31, 2016.

The following table provides an analysis of the Company’s allowance for loans at the dates and the periods indicated:

	Three Months Ended March 31,
	2017			2016
	(in thousands)
Beginning balance	$	70,043		$	68,172
Charge-offs:
Commercial business	(1,127		)	(3,773		)
One-to-four family residential	(307		)	—
One-to-four family residential construction	(14		)	—
Consumer	(428		)	(266		)
Purchased credit impaired	(1,939		)	(2,866		)
Total charge-offs	(3,815		)	(6,905		)
Recoveries:
Commercial business	365			662
One-to-four family residential	117			41
Commercial and multifamily residential	78			69
One-to-four family residential construction	29			254
Commercial and multifamily residential construction	—			1
Consumer	285			165
Purchased credit impaired	1,144			1,551
Total recoveries	2,018			2,743
Net charge-offs	(1,797		)	(4,162		)
Provision for loan and lease losses	2,775			5,254
Ending balance	$	71,021		$	69,264
Total loans, net at end of period, excluding loans held of sale	$	6,228,136		$	5,877,283
Allowance for loan and lease losses to period-end loans	1.14		%	1.18		%
Allowance for unfunded commitments and letters of credit
Beginning balance	$	2,705		$	2,930
Net changes in the allowance for unfunded commitments and letters of credit	850			—
Ending balance	$	3,555		$	2,930

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Liquidity and Sources of Funds

Our primary sources of funds are customer deposits. Additionally, we utilize advances from the FHLB of Des Moines (“FHLB”), the Federal Reserve Bank of San Francisco (“FRB”), and term and sweep repurchase agreements to supplement our funding needs. These funds, together with loan repayments, loan sales, retained earnings, equity and other borrowed funds are used to make loans, to acquire securities and other assets and to fund continuing operations.

In addition, we have a shelf registration statement on file with the Securities and Exchange Commission registering an unlimited amount of any combination of debt or equity securities, depositary shares, purchase contracts, units and warrants in one or more offerings. Specific information regarding the terms of and the securities being offered will be provided at the time of any offering. Proceeds from any future offerings are expected to be used for general corporate purposes, including, but not limited to, the repayment of debt, repurchasing or redeeming outstanding securities, working capital, funding future acquisitions or other purposes identified at the time of any offering.

Deposit Activities

Our deposit products include a wide variety of transaction accounts, savings accounts and time deposit accounts. Core deposits (demand deposit, savings, money market accounts and certificates of deposit less than $250,000) increased$45.0 million from year-end 2016.

We have established a branch system to serve our consumer and business depositors. In addition, management’s strategy for funding asset growth is to make use of brokered and other wholesale deposits on an as-needed basis. The Company participates in the Certificate of Deposit Account Registry Service (CDARS^®) program. CDARS^® is a network that allows participating banks to offer extended FDIC deposit insurance coverage on time deposits. The Company also participates in a similar program to offer extended FDIC deposit insurance coverage on money market accounts. These extended deposit insurance programs are generally available only to existing customers and are not used as a means of generating additional liquidity. At March 31, 2017, CDARS^® deposits and brokered money market deposits were $219.8 million, or 3% of total deposits, compared to $230.4 million at year-end 2016. The brokered deposits have varied maturities.

The following table sets forth the Company’s deposit base by type of product for the dates indicated:

	March 31, 2017				December 31, 2016
	Balance		% of Total		Balance		% of Total
	(dollars in thousands)
Core deposits:
Demand and other noninterest-bearing	$	3,958,106	48.9	%	$	3,944,495	48.9	%
Interest-bearing demand	985,954		12.2	%	985,293		12.2	%
Money market	1,798,034		22.2	%	1,791,283		22.2	%
Savings	759,002		9.4	%	723,667		9.0	%
Certificates of deposit, less than $250,000	293,494		3.6	%	304,830		3.8	%
Total core deposits	7,794,590		96.3	%	7,749,568		96.1	%
Certificates of deposit, $250,000 or more	74,460		0.9	%	79,424		1.0	%
Certificates of deposit insured by CDARS®	20,994		0.3	%	22,039		0.3	%
Brokered money market accounts	198,768		2.5	%	208,348		2.6	%
Subtotal	8,088,812		100.0	%	8,059,379		100.0	%
Premium resulting from acquisition date fair value adjustment	15				36
Total deposits	$	8,088,827			$	8,059,415

Borrowings

We rely on FHLB advances and FRB borrowings as another source of both short and long-term funding. FHLB advances and FRB borrowings are secured by investment securities, and residential, commercial and commercial real estate loans. At March 31, 2017, we had FHLB advances of $15.5 million compared to $6.5 million at December 31, 2016.

We also utilize wholesale and retail repurchase agreements to supplement our funding sources. Our wholesale repurchase agreements are secured by mortgage-backed securities. At March 31, 2017 and December 31, 2016, we had deposit customer sweep-related repurchase agreements of $21.9 million and $55.8 million, respectively, which mature on a daily basis as well as

47

a $25.0 million term repurchase agreement, which matures in 2018. Management anticipates we will continue to rely on FHLB advances, FRB borrowings and wholesale and retail repurchase agreements in the future and we will use those funds primarily to make loans and purchase securities.

Contractual Obligations, Commitments & Off-Balance Sheet Arrangements

We are party to many contractual financial obligations, including repayment of borrowings, operating and equipment lease payments, off-balance sheet commitments to extend credit and investments in affordable housing partnerships. At March 31, 2017, we had commitments to extend credit of $2.28 billion compared to $2.22 billion at December 31, 2016.

Capital Resources

Shareholders’ equity at March 31, 2017 was $1.28 billion, an increase from $1.25 billion at December 31, 2016. Shareholders’ equity was 13% of total period-end assets at March 31, 2017 and December 31, 2016.

Regulatory Capital. In July 2013, the federal bank regulators approved the New Capital Rules (as discussed in our 2016 Annual Report on Form 10-K, “Item 1. Business—Supervision and Regulation and —Regulatory Capital Requirements”), which implement the Basel III capital framework and various provisions of the Dodd-Frank Act. We and the Bank were required to comply with these rules as of January 1, 2015, subject to the phase-in of certain provisions. We believe that, as of March 31, 2017, we and the Bank would meet all capital adequacy requirements under the New Capital Rules on a fully phased-in basis as if all such requirements were then in effect.

FDIC regulations set forth the qualifications necessary for a bank to be classified as “well-capitalized,” primarily for assignment of FDIC insurance premium rates. Failure to qualify as “well-capitalized” can negatively impact a bank’s ability to expand and to engage in certain activities. The Company and the Bank qualified as “well-capitalized” at March 31, 2017 and December 31, 2016.

The following table presents the capital ratios and the capital conservation buffer, as applicable, for the Company and its banking subsidiary at March 31, 2017 and December 31, 2016:

	Company				Columbia Bank
	March 31, 2017		December 31, 2016		March 31, 2017		December 31, 2016
Common equity tier 1 (CET1) risk-based capital ratio	12.0318	%	11.6450	%	11.8563	%	11.5051	%
Tier 1 risk-based capital ratio	12.0318	%	11.6646	%	11.8563	%	11.5051	%
Total risk-based capital ratio	13.0398	%	12.6347	%	12.8650	%	12.4756	%
Leverage ratio	9.7863	%	9.5526	%	9.6438	%	9.4275	%
Capital conservation buffer	5.0398	%	4.6347	%	4.8650	%	4.4756	%

Stock Repurchase Program

On June 22, 2016, the Board of Directors approved a stock repurchase program which succeeds the prior program that was adopted in October 2011. The program authorizes the Company to repurchase up to 2.9 million shares of our outstanding common stock, representing approximately 5% of the common shares outstanding. The Company intends to purchase the shares from time to time in the open market or in private transactions, under conditions which allow such repurchases to be accretive to earnings per share while maintaining capital ratios that exceed the guidelines for a well-capitalized financial institution.

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Non-GAAP Financial Measures

The Company considers operating net interest margin (tax equivalent) to be a useful measurement as it more closely reflects the ongoing operating performance of the Company. Additionally, presentation of the operating net interest margin allows readers to compare certain aspects of the Company’s net interest margin to other organizations that may not have had significant acquisitions. Despite the usefulness of the operating net interest margin (tax equivalent) to the Company, there is no standardized definition for it and, as a result, the Company’s calculations may not be comparable with other organizations. The Company encourages readers to consider its Consolidated Financial Statements in their entirety and not to rely on any single financial measure.

The following table reconciles the Company’s calculation of the operating net interest margin (tax equivalent) to the net interest margin (tax equivalent) for the periods indicated:

	Three Months Ended March 31,
	2017			2016
Operating net interest margin non-GAAP reconciliation:	(dollars in thousands)
Net interest income (tax equivalent) (1)	$	89,518		$	82,661
Adjustments to arrive at operating net interest income (tax equivalent):
Incremental accretion income on FDIC purchased credit impaired loans	(2,117		)	(1,657		)
Incremental accretion income on other acquired loans	(1,948		)	(3,073		)
Premium amortization on acquired securities	1,462			2,324
Interest reversals on nonaccrual loans	265			453
Operating net interest income (tax equivalent) (1)	$	87,180		$	80,708
Average interest earning assets	$	8,520,291		$	8,005,945
Net interest margin (tax equivalent) (1)	4.20		%	4.13		%
Operating net interest margin (tax equivalent) (1)	4.09		%	4.03		%

__________

(1) Tax-exempt interest income has been adjusted to a tax equivalent basis. The amount of such adjustment was an addition to net interest income of $2.8 million and $2.5 million for the three months ended March 31, 2017 and 2016, respectively.

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Item 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

A number of measures are used to monitor and manage interest rate risk, including income simulations and interest sensitivity (gap) analysis. An income simulation model is the primary tool used to assess the direction and magnitude of changes in net interest income resulting from changes in interest rates. Basic assumptions in the model include prepayment speeds on mortgage-related assets, cash flows and maturities of other investment securities, loan and deposit volumes and pricing. These assumptions are inherently subjective and, as a result, the model cannot precisely estimate net interest income or precisely predict the impact of higher or lower interest rates on net interest income. Actual results will differ from simulated results due to timing, magnitude and frequency of interest rate changes and changes in market conditions and management strategies, among other factors. At March 31, 2017, based on the measures used to monitor and manage interest rate risk, there has not been a material change in the Company’s interest rate risk since December 31, 2016. For additional information, refer to Item 7 “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in the Company’s 2016 Annual Report on Form 10-K.

Item 4. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

An evaluation was carried out under the supervision and with the participation of the Company’s management, including the Chief Executive Officer (“CEO”) and Chief Financial Officer (“CFO”), of the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934). Based on that evaluation, the CEO and CFO have concluded that as of the end of the period covered by this report, our disclosure controls and procedures are effective in ensuring that the information required to be disclosed by us in the reports we file or submit under the Securities Exchange Act of 1934 is (i) accumulated and communicated to our management (including the CEO and CFO) to allow timely decisions regarding required disclosure, and (ii) recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms.

Changes in Internal Control Over Financial Reporting

There was no change in our internal controls over financial reporting during our most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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PART II - OTHER INFORMATION

Item 1. LEGAL PROCEEDINGS

The Company and its subsidiaries are party to routine litigation arising in the ordinary course of business. Management believes that, based on information currently known to it, any liabilities arising from such litigation will not have a material adverse impact on the Company’s financial conditions, results of operations or cash flows.

Item 1A. RISK FACTORS

Refer to Item 1A of Part I of the Company’s Annual Report on Form 10-K for the year ended December 31, 2016 for a discussion of risk factors relating to the Company’s business. The Company believes that there has been no material change in its risk factors as previously disclosed in the Company’s Form 10-K.

Item 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

(a) In conjunction with the 2013 acquisition of West Coast Bancorp, the Company issued 8,782 shares of mandatorily convertible cumulative participating preferred stock, Series B (“Series B Preferred Stock”). On January 12, 2017, all outstanding shares of Series B Preferred Stock were converted into 102,362 shares of Company common stock. The shares of common stock were exempt form registration in reliance on Section 3(a)(9) of the Securities Act of 1933.

(b) Not applicable

(c) The following table provides information about repurchases of common stock by the Company during the quarter ended March 31, 2017:

Period	Total Number of Common Shares Purchased (1)	Average Price Paid per Common Share		Total Number of Shares Purchased as Part of Publicly Announced Plan (2)	Maximum Number of Remaining Shares That May Yet Be Purchased Under the Plan (2)
1/1/2017 - 1/31/2017	700	$	40.83	—	2,900,000
2/1/2017 - 2/28/2017	48,258	40.86		—	2,900,000
3/1/2017 - 3/31/2017	961	40.33		—	2,900,000
	49,919	$	40.85	—

(1) Common shares repurchased by the Company during the quarter consisted of cancellation of 49,919 shares of common stock to pay the shareholders’ withholding taxes.

(2) The repurchase plan, which was approved in 2016, authorized the Company to repurchase up to 2.9 million shares of its outstanding common stock.

Item 3. DEFAULTS UPON SENIOR SECURITIES

None.

Item 4. MINE SAFETY DISCLOSURES

Not applicable.

Item 5. OTHER INFORMATION

None.

51

Item 6. EXHIBITS

2.1*	Agreement and Plan of Merger, dated as of January 9, 2017, by and between Columbia Banking System, Inc. and Pacific Continental Corporation (Incorporated by reference to Exhibit 2.1 of the Company’s Current Report on Form 8-K filed January 10, 2017)
31.1+	Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2+	Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32+	Certification Pursuant to 18 U.S.C. Section 1350, As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101+	The following financial information from Columbia Banking System, Inc.’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2017 is formatted in XBRL: (i) the Unaudited Consolidated Balance Sheets, (ii) the Unaudited Consolidated Statements of Income, (iii) the Unaudited Consolidated Statements of Comprehensive Income, (iv) the Unaudited Consolidated Statements of Changes in Shareholders’ Equity, (v) the Unaudited Consolidated Statements of Cash Flows, and (vi) the Notes to Unaudited Consolidated Financial Statements.

+ Filed herewith

* The disclosure schedules and exhibits have been omitted pursuant to Item 601 (b)(2) of Regulation S-K. Columbia agrees to furnish supplementally a copy of any omitted schedule or exhibit to the SEC upon request.

52

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Company has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

		COLUMBIA BANKING SYSTEM, INC.
Date:	May 5, 2017	By	/s/ HADLEY S. ROBBINS
			Hadley S. Robbins
			Executive Vice President and Interim Chief Executive Officer (Principal Executive Officer)
Date:	May 5, 2017	By	/s/ CLINT E. STEIN
			Clint E. Stein
			Executive Vice President and Chief Financial Officer (Principal Financial Officer)
Date:	May 5, 2017	By	/s/ BARRY S. RAY
			Barry S. Ray
			Senior Vice President and Chief Accounting Officer (Principal Accounting Officer)

53

INDEX TO EXHIBITS

2.1*	Agreement and Plan of Merger, dated as of January 9, 2017, by and between Columbia Banking System, Inc. and Pacific Continental Corporation (Incorporated by reference to Exhibit 2.1 of the Company’s Current Report on Form 8-K filed January 10, 2017)
31.1+	Certification of Interim Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2+	Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32+	Certification Pursuant to 18 U.S.C. Section 1350, As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101+	The following financial information from Columbia Banking System, Inc.’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2017 is formatted in XBRL: (i) the Unaudited Consolidated Balance Sheets, (ii) the Unaudited Consolidated Statements of Income, (iii) the Unaudited Consolidated Statements of Comprehensive Income, (iv) the Unaudited Consolidated Statements of Changes in Shareholders’ Equity, (v) the Unaudited Consolidated Statements of Cash Flows, and (vi) the Notes to Unaudited Consolidated Financial Statements.

+ Filed herewith

* The disclosure schedules and exhibits have been omitted pursuant to Item 601 (b)(2) of Regulation S-K. Columbia agrees to furnish supplementally a copy of any omitted schedule or exhibit to the SEC upon request.

54

EX-31.1

EXHIBIT 31.1

CERTIFICATION

I, Hadley S. Robbins, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Columbia Banking System, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

/s/ HADLEY S. ROBBINS

Hadley S. Robbins
Executive Vice President and

Interim Chief Executive Officer

Date: May 5, 2017

EX-31.2

EXHIBIT 31.2

CERTIFICATION

I, Clint E. Stein, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Columbia Banking System, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

/s/ CLINT E. STEIN

Clint E. Stein
Executive Vice President and
Chief Financial Officer

Date: May 5, 2017

EX-32

EXHIBIT 32

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Columbia Banking System, Inc. (the “Company”) on Form 10-Q for the period ended March 31, 2017 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), we, Hadley S. Robbins, Executive Vice President and Interim Chief Executive Officer, and Clint E. Stein, Executive Vice President and Chief Financial Officer, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ HADLEY S. ROBBINS

Hadley S. Robbins

Executive Vice President and

Interim Chief Executive Officer
(Principal Executive Officer)

/s/ CLINT E. STEIN

Clint E. Stein

Executive Vice President and

Chief Financial Officer

Columbia Banking System, Inc.

Dated: May 5, 2017

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2017	Apr. 30, 2017
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q1
Entity Registrant Name	COLUMBIA BANKING SYSTEM INC
Entity Central Index Key	0000887343
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		58,343,431

XML

Consolidated Balance Sheets - USD ($) shares in Thousands, $ in Thousands		Mar. 31, 2017	Dec. 31, 2016
ASSETS
Cash and due from banks		$ 169,697	$ 193,038
Interest-earning deposits with banks		13,124	31,200
Total cash and cash equivalents		182,821	224,238
Securities available for sale at fair value (amortized cost of $2,349,149 and $2,299,037, respectively)		2,331,359	2,278,577
Federal Home Loan Bank stock at cost		10,600	10,240
Loans held for sale		3,245	5,846
Loans, net of unearned income of ($32,212) and ($33,718), respectively		6,228,136	6,213,423
Less: allowance for loan and lease losses		71,021	70,043
Loans, net		6,157,115	6,143,380
FDIC loss-sharing asset		3,239	3,535
Interest receivable		31,345	30,074
Premises and equipment, net		148,541	150,342
Other real estate owned		4,519	5,998
Goodwill		382,762	382,762
Other intangible assets, net		16,282	17,631
Other assets		255,444	256,984
Total assets		9,527,272	9,509,607
LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest-bearing		3,958,106	3,944,495
Interest-bearing		4,130,721	4,114,920
Total deposits		8,088,827	8,059,415
Federal Home Loan Bank advances		15,483	6,493
Securities sold under agreements to repurchase		46,914	80,822
Other liabilities		100,705	111,865
Total liabilities		8,251,929	8,258,595
Commitments and contingent liabilities (Note 10)
Shareholders' equity:
Preferred Stock, Shares Authorized		2,000	2,000
Preferred Stock, Shares Issued		0	9
Preferred Stock, Value, Issued		$ 0	$ 2,217
Authorized shares		115,000	115,000
Common Stock Shares Issued And Outstanding		58,329	58,042
Common Stock (no par value)		$ 999,702	$ 995,837
Retained earnings		288,247	271,957
Accumulated other comprehensive loss	[1]	(12,606)	(18,999)
Total shareholders’ equity		1,275,343	1,251,012
Total liabilities and shareholders’ equity		$ 9,527,272	$ 9,509,607

[1] All amounts are net of tax. Amounts in parenthesis indicate debits.

XML

Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Securities available-for-sale, amortized cost	$ 2,349,149	$ 2,299,037
Less: unearned income on loans	$ (32,212)	$ (33,718)
Common stock, par value	$ 0	$ 0
Authorized shares	115,000	115,000
Common stock, shares outstanding	58,329	58,042

XML

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Interest Income
Loans	$ 74,120	$ 70,316
Taxable securities	10,986	8,017
Tax-exempt securities	2,691	2,803
Deposits in banks	19	38
Total interest income	87,816	81,174
Interest Expense
Deposits	787	742
Federal Home Loan Bank advances	225	124
Other borrowings	129	138
Total interest expense	1,141	1,004
Net Interest Income	86,675	80,170
Provision for loan and lease losses	2,775	5,254
Net interest income after provision for loan and lease losses	83,900	74,916
Noninterest Income
Deposit account and treasury management fees	7,287	6,989
Card revenue	5,723	5,652
Financial services and trust revenue	2,839	2,821
Loan revenue	3,593	2,262
Merchant processing revenue	2,019	2,102
Bank owned life insurance	1,280	1,116
Investment securities gains	0	373
Change in FDIC loss-sharing asset	(274)	(1,103)
Other	2,392	434
Total noninterest income	24,859	20,646
Noninterest Expense
Compensation and employee benefits	40,825	36,319
Occupancy	7,191	10,173
Merchant processing expense	1,049	1,033
Advertising and promotion	817	842
Data processing	4,208	4,146
Legal and professional fees	3,369	1,325
Taxes, licenses and fees	1,241	1,290
Regulatory premiums	776	1,141
Net cost (benefit) of operation of other real estate owned	152	104
Amortization of intangibles	1,349	1,583
Other	8,009	7,118
Total noninterest expense	68,986	65,074
Income before income taxes	39,773	30,488
Income tax provision	10,574	9,229
Net Income	$ 29,199	$ 21,259
Earnings per common share
Basic ($ per share)	$ 0.50	$ 0.37
Diluted ($ per share)	0.50	0.37
Dividends paid per common share	$ 0.22	$ 0.38
Weighted average number of common shares outstanding	57,388	57,114
Weighted average number of diluted common shares outstanding	57,394	57,125

XML

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Net income		$ 29,199	$ 21,259
Unrealized gain from securities:
Net unrealized holding loss from available for sale securities arising during the period		1,702	18,770
Reclassification adjustment of net gain from sale of available for sale securities included in income		0	(238)
Net unrealized gain from securities, net of reclassification adjustment		1,702	18,532
Pension plan liability adjustment:
Unrecognized net actuarial gain (loss) during the period		4,604	0
Less: amortization of unrecognized net actuarial loss included in net periodic pension cost		87	106
Pension plan liability adjustment, net		4,691	106
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	[1]	6,393	18,638
Total comprehensive income		$ 35,592	$ 39,897

[1] All amounts are net of tax. Amounts in parenthesis indicate debits.

XML

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net unrealized holding gain (loss) from available for sale securities arising during the period, tax	$ (968)	$ (10,686)
Reclassification adjustment of net gain from sale of available for sale securities included in income, tax	0	135
Net unrealized loss from unfunded defined benefit plan liability arising during the period, tax	(2,622)	0
Less: amortization of unrecognized net actuarial loss included in net periodic pension cost, tax	$ (49)	$ (61)

XML

Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Preferred Stock [Member]
Balance, value at Dec. 31, 2015	$ 1,242,128	$ 990,281	$ 255,925	$ (6,295)	$ 2,217
Balance, shares at Dec. 31, 2015		57,724,000			9,000
Net income	21,259		21,259
Other comprehensive income	18,638			18,638
Issuance of common stock - stock option and other plans, value		$ 598
Issuance of common stock - stock option and other plans, shares		20,000
Issuance of common stock - restricted stock awards, net of cancelled awards, value		$ 1,180
Issuance of common stock - restricted stock awards, net of cancelled awards, shares		299,000
Stock Repurchased and Retired During Period, Value		$ (1,033)
Stock Repurchased During Period, Shares		(35,000)
Dividends, Preferred Stock, Cash			(39)
Cash dividends paid on common stock	(21,943)		(21,943)
Balance, value at Mar. 31, 2016	1,260,788	$ 991,026	255,202	12,343	$ 2,217
Balance, shares at Mar. 31, 2016		58,008,000			9,000
Cumulative Effect of New Accounting Principle in Period of Adoption	67	$ 184	(117)
Balance, value at Dec. 31, 2016	1,251,012	$ 995,837	271,957	(18,999)	$ 2,217
Balance, shares at Dec. 31, 2016		58,042,000			8,782
Net income	29,199		29,199
Other comprehensive income	6,393			6,393
Issuance of common stock - stock option and other plans, value	1,145	$ 1,145
Issuance of common stock - stock option and other plans, shares		28,000
Issuance of common stock - restricted stock awards, net of cancelled awards, value	2,358	$ 2,358
Conversion of Stock, Shares Converted					(9,000)
Conversion of Stock, Amount Converted					$ (2,217)
Conversion of Stock, New Issuance		102,000
Conversion of Stock, Amount Issued	0	$ 2,217
Issuance of common stock - restricted stock awards, net of cancelled awards, shares		207,000
Stock Repurchased and Retired During Period, Value	(2,039)	$ (2,039)
Stock Repurchased During Period, Shares		(50,000)
Cash dividends paid on common stock	(12,792)		(12,792)
Balance, value at Mar. 31, 2017	$ 1,275,343	$ 999,702	$ 288,247	$ (12,606)	$ 0
Balance, shares at Mar. 31, 2017		58,329,000			0

XML

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash Flows From Operating Activities
Net income	$ 29,199	$ 21,259
Adjustments to reconcile net income to net cash provided by operating activities
Provision for loan and lease losses	2,775	5,254
Stock-based compensation expense	2,358	1,180
Depreciation, amortization and accretion	6,074	10,798
Investment securities gains	0	373
Net realized loss on sale of premises and equipment, loans held for investment and other assets	55	106
Net realized loss on sale and valuation adjustments of other real estate owned	(204)	(90)
Originations of loans held for sale	31,295	19,174
Proceeds from sales of loans held for sale	33,896	20,002
Net change in:
Interest receivable	(1,271)	(1,427)
Interest payable	(9)	(55)
Other assets	(2,164)	(3,731)
Other liabilities	(3,841)	(4,619)
Net cash provided by operating activities	35,981	29,310
Cash Flows From Investing Activities
Loans originated and acquired, net of principal collected	(21,936)	(64,056)
Purchases of securities available for sale	(108,958)	(95,686)
Purchases of premises and equipment	(336)	(445)
Payments to Acquire Federal Home Loan Bank Stock	(31,400)	(10,520)
Proceeds from FDIC for reimbursement on loss-sharing asset	26	258
Proceeds from sales of securities available for sale	0	38,876
Proceeds from principal repayments and maturities of securities available for sale	55,369	52,422
Proceeds from Sales of Assets, Investing Activities	6,893	1,911
Proceeds from Sale of Federal Home Loan Bank Stock	31,040	13,001
Proceeds from sales of other real estate and other personal property owned	1,275	1,326
Payments to FDIC related to loss-sharing asset	(210)	(611)
Net cash used in investing activities	(68,237)	(63,524)
Cash Flows From Financing Activities
Net increase in deposits	29,433	158,120
Net decrease in sweep repurchase agreements	(33,908)	(25,860)
Proceeds from Federal Home Loan Bank advances	785,000	165,000
Proceeds from exercise of stock options	1,145	598
Repayment of Federal Home Loan Bank advances	(776,000)	(227,000)
Payment of common stock dividends	(12,792)	(21,943)
Preferred stock dividends	0	(39)
Purchase and retirement of common stock	2,039	1,033
Net cash (used in) provided by financing activities	(9,161)	47,843
Increase (decrease) in cash and cash equivalents	(41,417)	13,629
Cash and cash equivalents at beginning of period	224,238	175,302
Cash and cash equivalents at end of period	182,821	188,931
Supplemental Information:
Cash paid for interest	1,150	1,059
Cash paid for income tax	0	6,350
Non-cash investing and financing activities
Loans transferred to other real estate owned	$ 0	$ 105

XML

Basis of Presentation and Significant Accounting Policies

3 Months Ended

Mar. 31, 2017

Basis of Presentation And Significant Accounting Policies

Basis of Presentation and Significant Accounting Policies

Basis of Presentation and Significant Accounting Policies

Basis of Presentation

The interim unaudited Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information and with instructions to Form 10-Q and Article 10 of Regulation S-X. The Consolidated Financial Statements include the accounts of Columbia Banking System, Inc. (“we”, “our”, “Columbia” or the “Company”) and its subsidiaries, including its wholly owned banking subsidiary Columbia State Bank (“Columbia Bank” or the “Bank”) and Columbia Trust Company (“Columbia Trust”). All intercompany transactions and accounts have been eliminated in consolidation. In the opinion of management, all adjustments (consisting only of normal recurring adjustments) considered necessary for a fair statement of the results for the interim periods presented have been included. The results of operations for the three months ended March 31, 2017 are not necessarily indicative of results to be anticipated for the year ending December 31, 2017. The accompanying interim unaudited Consolidated Financial Statements should be read in conjunction with the financial statements and related notes contained in the Company’s 2016 Annual Report on Form 10-K.

Significant Accounting Policies

The significant accounting policies used in preparation of our Consolidated Financial Statements are disclosed in our 2016 Annual Report on Form 10-K. There have not been any changes in our significant accounting policies compared to those contained in our 2016 Form 10-K disclosure for the year ended December 31, 2016.

XML

Accounting Pronouncements Recently Issued

3 Months Ended

Mar. 31, 2017

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

Accounting Pronouncements Recently Issued

Accounting Pronouncements Recently Issued

In March 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-08, Premium Amortization on Purchased Callable Debt Securities. The amendments included in this ASU change guidance on the amortization period of premiums on certain purchased callable debt securities. Specifically, the amendments shorten the premium amortization period to the earliest call date. The amendments in ASU 2017-08 are effective for fiscal years and interim periods within those years, beginning after December 15, 2018. Early adoption is permitted. The Company early adopted the amendments of ASU 2017-08 during the current quarter. The impact of the adoption of ASU 2017-08 to current period net income and opening retained earnings was not material.

In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment. The amendments in this are intended to reduce the cost and complexity of the goodwill impairment test by eliminating the second step of the goodwill impairment test. An entity will apply a one-step quantitative test and record the amount of goodwill impairment as the excess of a reporting unit’s carrying amount over its fair value, not to exceed the total amount of goodwill allocated to the reporting unit. The new guidance does not amend the optional qualitative assessment of goodwill impairment. The amendments in ASU 2017-04 are effective for annual or interim periods beginning after December 15, 2019. Early adoption is permitted. The Company does not expect the impact to its Consolidated Financial Statements to be material.

In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments. The amendments included in this ASU require an entity to reflect its current estimate of all expected credit losses for assets held at an amortized cost basis. For available for sale debt securities, credit losses will be measured in a manner similar to current GAAP, however, this ASU will require that credit losses be presented as an allowance rather than as a write-down. The amendments in ASU 2016-13 are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years, and are required to be adopted through a modified retrospective approach, with a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the ASU is effective.

Currently, the Company cannot reasonably estimate the impact that adoption of ASU 2016-13 will have on its Consolidated Financial Statements; however, the impact may be significant. That assessment is based upon the fact that, unlike the incurred loss models in existing GAAP, the current expected credit loss (“CECL”) model in ASU 2016-13 does not specify a threshold for the recognition of an impairment allowance. Rather, the Company will recognize an impairment allowance equal to its estimate of lifetime expected credit losses, adjusted for prepayments, for in-scope financial instruments as of the end of the reporting period. Accordingly, the impairment allowance measured under the CECL model could increase significantly from the impairment allowance measured under the Company’s existing incurred loss model. Significant CECL implementation matters to be addressed by the Company include selecting loss estimation methodologies, identifying, sourcing and storing data, addressing data gaps, defining a reasonable and supportable forecast period, selecting historical loss information which will be reverted to, documenting the CECL estimation process, assessing the impact to internal controls over financial reporting, capital planning and seeking process approval from audit and regulatory stakeholders.

In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting. The amendments included in this ASU simplify several aspects of the accounting for employee share-based payment transactions including the accounting for income taxes, forfeitures and statutory tax withholding requirements, as well as classification in the statement of cash flows. The Company adopted the amendments of ASU 2016-09 in the current quarter. Adoption of amended forfeiture guidance resulted in an opening period adjustment decreasing retained earnings $117 thousand and increasing common stock $184 thousand. Adoption of the amended excess tax benefit guidance resulted in a current period income tax benefit of $1.2 million or $0.02 per diluted common share.

In February 2016, the FASB issued ASU 2016-02, Leases. The amendments included in this ASU create a new accounting model for both lessees and lessors. The new guidance requires lessees to recognize lease liabilities, initially measured as the present value of future lease payments, and corresponding right-of-use assets for all leases with lease terms greater than 12 months. This model differs from the current lease accounting model, which does not require such lease liabilities and corresponding right-of-use assets to be recorded for operating leases. The amendments in ASU 2016-02 must be adopted using the modified retrospective approach and will be effective for the first interim or annual period beginning after December 15, 2018. Early adoption is permitted. During 2016, the Company implemented a new lease administration application that allows the Company to readily measure future lease payment streams, which is an important component of the new lease accounting model. Significant implementation matters to be addressed by the Company include selecting either a third-party lease accounting application or internally-developing such an application, assessing the impact to its Consolidated Financial Statements and internal controls over financial reporting and documenting the new lease accounting process. See Note 17, “Commitments and Contingent Liabilities” to our 2016 Form 10-K, for more information regarding the minimum future payments related to our operating leases.

XML

Securities

3 Months Ended

Mar. 31, 2017

Available-for-sale Securities [Abstract]

Securities

Securities

The following table summarizes the amortized cost, gross unrealized gains and losses and the resulting fair value of securities available for sale:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
March 31, 2017
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	1,506,914	$	2,400	$	(22,816	)	$	1,486,498
State and municipal securities	484,376		7,316		(4,337		)	487,355
U.S. government agency and government-sponsored enterprise securities	352,323		1,241		(1,381		)	352,183
U.S. government securities	252		—		—			252
Other securities	5,284		60		(273		)	5,071
Total	$	2,349,149	$	11,017	$	(28,807	)	$	2,331,359
December 31, 2016
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	1,486,690	$	2,760	$	(23,718	)	$	1,465,732
State and municipal securities	473,914		6,343		(5,197		)	475,060
U.S. government agency and government-sponsored enterprise securities	332,348		1,065		(1,511		)	331,902
U.S. government securities	801		—		(1		)	800
Other securities	5,284		63		(264		)	5,083
Total	$	2,299,037	$	10,231	$	(30,691	)	$	2,278,577

There were no proceeds from sales of securities available for sale for the three months ended March 31, 2017 and there were $38.9 million for the three months ended March 31, 2016. The following table provides the gross realized gains and losses on the sales of securities for the periods indicated:

	Three Months Ended
	March 31,
	2017		2016
	(in thousands)
Gross realized gains	$	—	$	373
Gross realized losses	—		—
Net realized gains	$	—	$	373

The scheduled contractual maturities of investment securities available for sale at March 31, 2017 are presented as follows:

	March 31, 2017
	Amortized Cost		Fair Value
	(in thousands)
Due within one year	$	53,518	$	53,606
Due after one year through five years	502,633		505,398
Due after five years through ten years	731,123		724,361
Due after ten years	1,056,591		1,042,923
Other securities with no stated maturity	5,284		5,071
Total investment securities available-for-sale	$	2,349,149	$	2,331,359

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:

	March 31, 2017
	(in thousands)
Washington and Oregon State to secure public deposits	$	228,794
Federal Reserve Bank to secure borrowings	54,551
Other securities pledged	125,954
Total securities pledged as collateral	$	409,299

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 March 31, 2017 and December 31, 2016:

	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
	(in thousands)
March 31, 2017
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	1,038,971	$	(17,020	)	$	155,846	$	(5,796	)	$	1,194,817	$	(22,816	)
State and municipal securities	162,860		(4,249		)	3,412		(88		)	166,272		(4,337		)
U.S. government agency and government-sponsored enterprise securities	193,846		(1,381		)	—		—			193,846		(1,381		)
U.S. government securities	251		—			—		—			251		—
Other securities	2,263		(51		)	2,734		(222		)	4,997		(273		)
Total	$	1,398,191	$	(22,701	)	$	161,992	$	(6,106	)	$	1,560,183	$	(28,807	)
December 31, 2016
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	1,029,116	$	(18,788	)	$	159,046	$	(4,930	)	$	1,188,162	$	(23,718	)
State and municipal securities	211,342		(5,064		)	3,384		(133		)	214,726		(5,197		)
U.S. government agency and government-sponsored enterprise securities	218,811		(1,511		)	—		—			218,811		(1,511		)
U.S. government securities	251		(1		)	—		—			251		(1		)
Other securities	2,263		(51		)	2,743		(213		)	5,006		(264		)
Total	$	1,461,783	$	(25,415	)	$	165,173	$	(5,276	)	$	1,626,956	$	(30,691	)

At March 31, 2017, there were 198 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations securities in an unrealized loss position, of which 52 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 March 31, 2017.

At March 31, 2017, there were 142 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 March 31, 2017, none of the rated obligations of state and local government entities held by the Company had a below investment grade credit rating. Because the credit quality of these securities are investment grade and the Company does not intend to sell these securities nor does the Company consider it more likely than not that it will be required to sell these securities before the recovery of amortized cost basis, which may be upon maturity, the Company does not consider these investments to be other-than-temporarily impaired at March 31, 2017.

At March 31, 2017, there were 20 U.S. government agency and government-sponsored enterprise securities in an unrealized loss position, of which none were in a continuous loss position for 12 months or more. The decline in fair value is attributable to changes in interest rates relative to where these investments fall within the yield curve and their individual characteristics. Because the Company does not currently intend to sell these securities nor does the Company consider it more likely than not that it will be required to sell these securities before the recovery of amortized cost basis, which may be upon maturity, the Company does not consider these investments to be other-than-temporarily impaired at March 31, 2017.

At March 31, 2017, there was one U.S. government security in an unrealized loss position, which was not in a continuous loss position for 12 months or more. The decline in fair value is attributable to changes in interest rates relative to where this investment falls within the yield curve and its individual characteristics. Because the Company does not currently intend to sell this security nor does the Company consider it more likely than not that it will be required to sell this security before the recovery of amortized cost basis, which may be upon maturity, the Company does not consider this investment to be other-than-temporarily impaired at March 31, 2017.

At March 31, 2017, there were two other securities in an unrealized loss position, of which one was in a continuous unrealized loss position for 12 months or more. The decline in fair value is attributable to changes in interest rates and the additional risk premium investors are demanding for investment securities with these characteristics. The Company does not consider these investments to be other-than-temporarily impaired at March 31, 2017 as it has the intent and ability to hold this investment for sufficient time to allow for recovery in the market value.

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Loans

3 Months Ended

Mar. 31, 2017

Loans Receivable, Net [Abstract]

Loans

Loans

The Company’s loan portfolio includes originated and purchased loans. Originated loans and purchased loans for which there was no evidence of credit deterioration at their acquisition date and it was probable that we would be able to collect all contractually required payments are referred to collectively as loans, excluding purchased credit impaired loans. Purchased loans for which there was, at acquisition date, evidence of credit deterioration since their origination and it was probable that we would be unable to collect all contractually required payments are referred to as purchased credit impaired loans, or “PCI loans.”

The following is an analysis of the loan portfolio by segment (net of unearned income):

	March 31, 2017									December 31, 2016
	Loans, excluding PCI loans			PCI Loans			Total			Loans, excluding PCI loans			PCI Loans			Total
	(in thousands)
Commercial business	$	2,559,247		$	19,047		$	2,578,294		$	2,551,054		$	20,185		$	2,571,239
Real estate:
One-to-four family residential	172,581			14,969			187,550			170,331			17,862			188,193
Commercial and multifamily residential	2,783,433			88,527			2,871,960			2,719,830			89,231			2,809,061
Total real estate	2,956,014			103,496			3,059,510			2,890,161			107,093			2,997,254
Real estate construction:
One-to-four family residential	115,219			479			115,698			121,887			832			122,719
Commercial and multifamily residential	172,895			989			173,884			209,118			1,565			210,683
Total real estate construction	288,114			1,468			289,582			331,005			2,397			333,402
Consumer	318,069			14,893			332,962			329,261			15,985			345,246
Less: Net unearned income	(32,212		)	—			(32,212		)	(33,718		)	—			(33,718		)
Total loans, net of unearned income	6,089,232			138,904			6,228,136			6,067,763			145,660			6,213,423
Less: Allowance for loan and lease losses	(61,626		)	(9,395		)	(71,021		)	(59,528		)	(10,515		)	(70,043		)
Total loans, net	$	6,027,606		$	129,509		$	6,157,115		$	6,008,235		$	135,145		$	6,143,380
Loans held for sale	$	3,245		$	—		$	3,245		$	5,846		$	—		$	5,846

At March 31, 2017 and December 31, 2016, the Company had no material foreign activities. Substantially all of the Company’s loans and unfunded commitments are geographically concentrated in its service areas within the states of Washington, Oregon and Idaho.

The Company has made loans to executive officers and directors of the Company and related interests. These loans are made on the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with unrelated persons and do not involve more than the normal risk of collectability. The aggregate dollar amount of these loans was $10.1 million at March 31, 2017 and December 31, 2016. During the first three months of 2017, there were $75 thousand in advances and $96 thousand in repayments.

At March 31, 2017 and December 31, 2016, $2.28 billion and $2.29 billion of commercial and residential real estate loans were pledged as collateral on Federal Home Loan Bank of Des Moines (“FHLB”) borrowings and additional borrowing capacity. The Company has also pledged $50.0 million and $54.2 million of commercial loans to the Federal Reserve Bank for additional borrowing capacity at March 31, 2017 and December 31, 2016, respectively.

The following is an analysis of nonaccrual loans as of March 31, 2017 and December 31, 2016:

	March 31, 2017				December 31, 2016
	Recorded Investment Nonaccrual Loans		Unpaid Principal Balance Nonaccrual Loans		Recorded Investment Nonaccrual Loans		Unpaid Principal Balance Nonaccrual Loans
	(in thousands)
Commercial business:
Secured	$	10,659	$	21,144	$	11,524	$	21,503
Unsecured	189		457		31		303
Real estate:
One-to-four family residential	450		1,703		568		1,302
Commercial & multifamily residential:
Commercial land	2,729		2,726		934		922
Income property	3,290		3,561		4,005		4,247
Owner occupied	4,218		8,544		6,248		9,030
Real estate construction:
One-to-four family residential:
Land and acquisition	—		—		14		102
Residential construction	213		213		549		549
Consumer	3,799		4,180		3,883		4,331
Total	$	25,547	$	42,528	$	27,756	$	42,289

Loans, excluding purchased credit impaired loans

The following is an aging of the recorded investment of the loan portfolio as of March 31, 2017 and December 31, 2016:

	Current Loans		30 - 59 Days Past Due		60 - 89 Days Past Due		Greater than 90 Days Past Due		Total Past Due		Nonaccrual Loans		Total Loans
March 31, 2017	(in thousands)
Commercial business:
Secured	$	2,447,180	$	6,417	$	204	$	—	$	6,621	$	10,659	$	2,464,460
Unsecured	90,245		34		5		—		39		189		90,473
Real estate:
One-to-four family residential	168,634		1,115		—		—		1,115		450		170,199
Commercial & multifamily residential:
Commercial land	280,562		—		—		—		—		2,729		283,291
Income property	1,366,062		583		140		—		723		3,290		1,370,075
Owner occupied	1,107,061		—		45		—		45		4,218		1,111,324
Real estate construction:
One-to-four family residential:
Land and acquisition	6,770		29		—		—		29		—		6,799
Residential construction	107,382		189		—		—		189		213		107,784
Commercial & multifamily residential:
Income property	106,227		—		—		—		—		—		106,227
Owner occupied	64,365		—		—		—		—		—		64,365
Consumer	308,902		907		627		—		1,534		3,799		314,235
Total	$	6,053,390	$	9,274	$	1,021	$	—	$	10,295	$	25,547	$	6,089,232
	Current Loans		30 - 59 Days Past Due		60 - 89 Days Past Due		Greater than 90 Days Past Due		Total Past Due		Nonaccrual Loans		Total Loans
December 31, 2016	(in thousands)
Commercial business:
Secured	$	2,439,250	$	806	$	10	$	—	$	816	$	11,524	$	2,451,590
Unsecured	94,118		287		301		—		588		31		94,737
Real estate:
One-to-four family residential	164,416		2,448		500		—		2,948		568		167,932
Commercial & multifamily residential:
Commercial land	269,816		64		—		—		64		934		270,814
Income property	1,365,150		480		111		—		591		4,005		1,369,746
Owner occupied	1,052,078		1,652		—		—		1,652		6,248		1,059,978
Real estate construction:
One-to-four family residential:
Land and acquisition	11,542		—		—		—		—		14		11,556
Residential construction	109,080		—		—		—		—		549		109,629
Commercial & multifamily residential:
Income property	103,779		—		—		—		—		—		103,779
Owner occupied	103,480		—		—		—		—		—		103,480
Consumer	318,369		2,035		235		—		2,270		3,883		324,522
Total	$	6,031,078	$	7,772	$	1,157	$	—	$	8,929	$	27,756	$	6,067,763

The following is an analysis of impaired loans as of March 31, 2017 and December 31, 2016:

	Recorded Investment of Loans Collectively Measured for Contingency Provision		Recorded Investment of Loans Individually Measured for Specific Impairment		Impaired Loans With Recorded Allowance						Impaired Loans Without Recorded Allowance
					Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance
March 31, 2017	(in thousands)
Commercial business:
Secured	$	2,456,672	$	7,788	$	—	$	—	$	—	$	7,788	$	14,806
Unsecured	90,473		—		—		—		—		—		—
Real estate:
One-to-four family residential	169,686		513		424		688		11		89		287
Commercial & multifamily residential:
Commercial land	280,992		2,299		—		—		—		2,299		2,288
Income property	1,366,381		3,694		533		537		26		3,161		3,656
Owner occupied	1,107,814		3,510		—		—		—		3,510		6,327
Real estate construction:
One-to-four family residential:
Land and acquisition	6,799		—		—		—		—		—		—
Residential construction	107,784		—		—		—		—		—		—
Commercial & multifamily residential:
Income property	106,227		—		—		—		—		—		—
Owner occupied	64,365		—		—		—		—		—		—
Consumer	308,710		5,525		4,923		5,013		57		602		682
Total	$	6,065,903	$	23,329	$	5,880	$	6,238	$	94	$	17,449	$	28,046
	Recorded Investment of Loans Collectively Measured for Contingency Provision		Recorded Investment of Loans Individually Measured for Specific Impairment		Impaired Loans With Recorded Allowance						Impaired Loans Without Recorded Allowance
					Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance
December 31, 2016	(in thousands)
Commercial business:
Secured	$	2,442,772	$	8,818	$	2,414	$	2,484	$	664	$	6,404	$	12,831
Unsecured	94,737		—		—		—		—		—		—
Real estate:
One-to-four family residential	167,403		529		435		693		12		94		291
Commercial & multifamily residential:
Commercial land	270,106		708		—		—		—		708		687
Income property	1,365,321		4,425		540		544		27		3,885		4,148
Owner occupied	1,054,564		5,414		—		—		—		5,414		8,102
Real estate construction:
One-to-four family residential:
Land and acquisition	11,542		14		14		102		1		—		—
Residential construction	109,293		336		—		—		—		336		336
Commercial & multifamily residential:
Income property	103,779		—		—		—		—		—		—
Owner occupied	103,480		—		—		—		—		—		—
Consumer	319,307		5,215		4,464		4,558		57		751		833
Total	$	6,042,304	$	25,459	$	7,867	$	8,381	$	761	$	17,592	$	27,228

The following table provides additional information on impaired loans for the three month periods indicated:

	Three Months Ended March 31,
	2017				2016
	Average Recorded Investment Impaired Loans		Interest Recognized on Impaired Loans		Average Recorded Investment Impaired Loans		Interest Recognized on Impaired Loans
	(in thousands)
Commercial business:
Secured	$	8,303	$	19	$	12,103	$	17
Real estate:
One-to-four family residential	521		2		975		6
Commercial & multifamily residential:
Commercial land	1,504		—		—		—
Income property	4,059		1		2,080		3
Owner occupied	4,462		—		5,516		7
Real estate construction:
One-to-four family residential:
Land and acquisition	7		—		388		1
Residential construction	168		—		562		—
Consumer	5,370		27		824		2
Total	$	24,394	$	49	$	22,448	$	36

The following is an analysis of loans classified as troubled debt restructurings (“TDR”) during the three months ended March 31, 2017 and 2016:

	Three months ended March 31, 2017					Three months ended March 31, 2016
	Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment
	(dollars in thousands)
Commercial business:
Secured	3	$	356	$	356	3	$	1,370	$	1,370
Real estate:
Commercial and multifamily residential:
Owner occupied	—	—		—		1	250		250
Consumer	10	1,546		1,546		4	497		497
Total	13	$	1,902	$	1,902	8	$	2,117	$	2,117

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 $451 thousand of additional funds on loans classified as TDR as of March 31, 2017. The Company had $508 thousand of such commitments at December 31, 2016. The Company did not have any loans modified as TDR that defaulted within twelve months of being modified as TDR during the three month periods ended March 31, 2017 and 2016.

Purchased Credit Impaired Loans

Purchased credit impaired (“PCI”) loans are accounted for under ASC 310-30 and initially measured at fair value based on expected future cash flows over the life of the loans. Loans that have common risk characteristics are aggregated into pools. The Company remeasures contractual and expected cash flows, at the pool-level, on a quarterly basis.

Contractual cash flows are calculated based upon the loan pool terms after applying a prepayment factor. Calculation of the applied prepayment factor for contractual cash flows is the same as described below for expected cash flows.

Inputs to the determination of expected cash flows include cumulative default and prepayment data as well as loss severity and recovery lag information. Cumulative default and prepayment data are calculated via a transition matrix, which utilizes probability values of a loan pool transitioning into a particular delinquency state (e.g. 0-30 days past due, 31 to 60 days, etc.) given its delinquency state at the remeasurement date. Loss severity factors are based upon either actual charge-off data within the loan pools or industry averages, and recovery lags are based upon the collateral within the loan pools.

The excess of cash flows expected to be collected over the initial fair value of purchased credit impaired loans is referred to as the accretable yield and is accreted into interest income over the estimated life of the acquired loans using the effective yield method. Other adjustments to the accretable yield include changes in the estimated remaining life of the acquired loans, changes in expected cash flows and changes of indices for acquired loans with variable interest rates.

The following is an analysis of our PCI loans, net of related allowance for losses and remaining valuation discounts as of March 31, 2017 and December 31, 2016:

	March 31, 2017		December 31, 2016
	(in thousands)
Commercial business	$	20,292	$	21,606
Real estate:
One-to-four family residential	17,608		20,643
Commercial and multifamily residential	92,930		94,795
Total real estate	110,538		115,438
Real estate construction:
One-to-four family residential	479		832
Commercial and multifamily residential	1,089		1,726
Total real estate construction	1,568		2,558
Consumer	16,485		17,649
Subtotal of PCI loans	148,883		157,251
Less:
Valuation discount resulting from acquisition accounting	9,979		11,591
Allowance for loan losses	9,395		10,515
PCI loans, net of allowance for loan losses	$	129,509	$	135,145

The following table shows the changes in accretable yield for PCI loans for the three months ended March 31, 2017 and 2016:

	Three Months Ended March 31,
	2017			2016
	(in thousands)
Balance at beginning of period	$	45,191		$	58,981
Accretion	(4,182		)	(4,229		)
Disposals	(158		)	94
Reclassifications from (to) nonaccretable difference	(2,407		)	1,761
Balance at end of period	$	38,444		$	56,607

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Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit

3 Months Ended

Mar. 31, 2017

Allowance For Loan And Lease Losses And Unfunded Loan Commitments And Letters Of Credit

Allowance For Loan And Lease Losses And Unfunded Loan Commitments And Letters Of Credit Text Block

Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit

We record an allowance for loan and lease losses (the “allowance”) to recognize management’s estimate of credit losses incurred in the loan portfolio at each balance sheet date. We have used the same methodology for allowance calculations during the three months ended March 31, 2017 and 2016.

The following tables show a detailed analysis of the allowance for the three months ended March 31, 2017 and 2016:

	Beginning Balance		Charge-offs			Recoveries		Provision (Recovery)			Ending Balance		Specific Reserve		General Allocation
Three months ended March 31, 2017	(in thousands)
Commercial business:
Secured	$	36,050	$	(1,109	)	$	297	$	434		$	35,672	$	—	$	35,672
Unsecured	960		(18		)	68		178			1,188		—		1,188
Real estate:
One-to-four family residential	599		(307		)	117		236			645		11		634
Commercial & multifamily residential:
Commercial land	1,797		—			—		491			2,288		—		2,288
Income property	7,342		—			35		(574		)	6,803		26		6,777
Owner occupied	6,439		—			43		52			6,534		—		6,534
Real estate construction:
One-to-four family residential:
Land and acquisition	316		(14		)	20		187			509		—		509
Residential construction	669		—			9		431			1,109		—		1,109
Commercial & multifamily residential:
Income property	404		—			—		378			782		—		782
Owner occupied	1,192		—			—		576			1,768		—		1,768
Consumer	3,534		(428		)	285		(31		)	3,360		57		3,303
Purchased credit impaired	10,515		(1,939		)	1,144		(325		)	9,395		—		9,395
Unallocated	226		—			—		742			968		—		968
Total	$	70,043	$	(3,815	)	$	2,018	$	2,775		$	71,021	$	94	$	70,927

	Beginning Balance		Charge-offs			Recoveries		Provision (Recovery)			Ending Balance		Specific Reserve		General Allocation
Three months ended March 31, 2016	(in thousands)
Commercial business:
Secured	$	32,321	$	(3,770	)	$	611	$	2,952		$	32,114	$	2,500	$	29,614
Unsecured	1,299		(3		)	51		(47		)	1,300		—		1,300
Real estate:
One-to-four family residential	916		—			41		(303		)	654		—		654
Commercial & multifamily residential:
Commercial land	1,178		—			—		84			1,262		—		1,262
Income property	6,616		—			61		725			7,402		—		7,402
Owner occupied	5,550		—			8		528			6,086		—		6,086
Real estate construction:
One-to-four family residential:
Land and acquisition	339		—			51		250			640		—		640
Residential construction	733		—			203		513			1,449		—		1,449
Commercial & multifamily residential:
Income property	388		—			1		326			715		—		715
Owner occupied	1,006		—			—		204			1,210		—		1,210
Consumer	3,531		(266		)	165		(62		)	3,368		15		3,353
Purchased credit impaired	13,726		(2,866		)	1,551		653			13,064		—		13,064
Unallocated	569		—			—		(569		)	—		—		—
Total	$	68,172	$	(6,905	)	$	2,743	$	5,254		$	69,264	$	2,515	$	66,749

Changes in the allowance for unfunded commitments and letters of credit, a component of “Other liabilities” in the Consolidated Balance Sheets, are summarized as follows:

	Three Months Ended
	March 31,
	2017		2016
	(in thousands)
Balance at beginning of period	$	2,705	$	2,930
Net changes in the allowance for unfunded commitments and letters of credit	850		—
Balance at end of period	$	3,555	$	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 March 31, 2017 and December 31, 2016:

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
March 31, 2017	(in thousands)
Loans, excluding PCI loans:
Commercial business:
Secured	$	2,297,687	$	40,267	$	126,506	$	—	$	—	$	2,464,460
Unsecured	89,171		850		452		—		—		90,473
Real estate:
One-to-four family residential	169,158		—		1,041		—		—		170,199
Commercial and multifamily residential:
Commercial land	270,840		5,199		7,252		—		—		283,291
Income property	1,345,290		6,321		18,464		—		—		1,370,075
Owner occupied	1,077,648		3,673		30,003		—		—		1,111,324
Real estate construction:
One-to-four family residential:
Land and acquisition	6,799		—		—		—		—		6,799
Residential construction	107,571		—		213		—		—		107,784
Commercial and multifamily residential:
Income property	106,227		—		—		—		—		106,227
Owner occupied	60,315		—		4,050		—		—		64,365
Consumer	307,559		1		6,675		—		—		314,235
Total	$	5,838,265	$	56,311	$	194,656	$	—	$	—	6,089,232
Less:
Allowance for loan and lease losses											61,626
Loans, excluding PCI loans, net											$	6,027,606

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
December 31, 2016	(in thousands)
Loans, excluding PCI loans:
Commercial business:
Secured	$	2,289,307	$	65,846	$	96,437	$	—	$	—	$	2,451,590
Unsecured	93,721		800		216		—		—		94,737
Real estate:
One-to-four family residential	164,797		395		2,740		—		—		167,932
Commercial and multifamily residential:
Commercial land	263,195		3,228		4,391		—		—		270,814
Income property	1,341,978		17,902		9,866		—		—		1,369,746
Owner occupied	1,027,019		6,608		26,351		—		—		1,059,978
Real estate construction:
One-to-four family residential:
Land and acquisition	11,541		—		15		—		—		11,556
Residential construction	108,941		—		688		—		—		109,629
Commercial and multifamily residential:
Income property	103,779		—		—		—		—		103,779
Owner occupied	98,948		88		4,444		—		—		103,480
Consumer	317,728		—		6,794		—		—		324,522
Total	$	5,820,954	$	94,867	$	151,942	$	—	$	—	6,067,763
Less:
Allowance for loan and lease losses											59,528
Loans, excluding PCI loans, net											$	6,008,235

The following is an analysis of the credit quality of our PCI loan portfolio as of March 31, 2017 and December 31, 2016:

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
March 31, 2017	(in thousands)
PCI loans:
Commercial business:
Secured	$	18,443	$	89	$	1,022	$	—	$	—	$	19,554
Unsecured	738		—		—		—		—		738
Real estate:
One-to-four family residential	16,571		—		1,037		—		—		17,608
Commercial and multifamily residential:
Commercial land	8,703		2,032		—		—		—		10,735
Income property	27,857		—		138		—		—		27,995
Owner occupied	53,380		—		820		—		—		54,200
Real estate construction:
One-to-four family residential:
Land and acquisition	401		—		78		—		—		479
Residential construction	—		—		—		—		—		—
Commercial and multifamily residential:
Income property	799		—		—		—		—		799
Owner occupied	290		—		—		—		—		290
Consumer	16,045		—		440		—		—		16,485
Total	$	143,227	$	2,121	$	3,535	$	—	$	—	148,883
Less:
Valuation discount resulting from acquisition accounting											9,979
Allowance for loan losses											9,395
PCI loans, net											$	129,509

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
December 31, 2016	(in thousands)
PCI loans:
Commercial business:
Secured	$	18,824	$	92	$	1,954	$	—	$	—	$	20,870
Unsecured	736		—		—		—		—		736
Real estate:
One-to-four family residential	19,293		—		1,350		—		—		20,643
Commercial and multifamily residential:
Commercial land	7,333		—		213		—		—		7,546
Income property	31,042		—		1,678		—		—		32,720
Owner occupied	53,623		—		906		—		—		54,529
Real estate construction:
One-to-four family residential:
Land and acquisition	744		—		88		—		—		832
Residential construction	—		—		—		—		—		—
Commercial and multifamily residential:
Income property	1,217		—		—		—		—		1,217
Owner occupied	509		—		—		—		—		509
Consumer	17,202		—		447		—		—		17,649
Total	$	150,523	$	92	$	6,636	$	—	$	—	157,251
Less:
Valuation discount resulting from acquisition accounting											11,591
Allowance for loan losses											10,515
PCI loans, net											$	135,145

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Other Real Estate Owned

3 Months Ended

Mar. 31, 2017

Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]

Other Real Estate Owned

Other Real Estate Owned (“OREO”)

The following tables set forth activity in OREO for the three months ended March 31, 2017 and 2016:

	Three Months Ended March 31,
	2017			2016
	(in thousands)
Balance, beginning of period	$	5,998		$	13,738
Transfers in	—			105
Valuation adjustments	(193		)	(137		)
Proceeds from sale of OREO property	(1,275		)	(1,326		)
Gain (loss) on sale of OREO, net	(11		)	47
Balance, end of period	$	4,519		$	12,427

At March 31, 2017, the carrying amount of foreclosed residential real estate properties held as a result of obtaining physical possession was $379 thousand and the recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process was $675 thousand.

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Covered Assets and FDIC Loss-sharing Asset

3 Months Ended

Mar. 31, 2017

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 March 31, 2017, the net present value of the Bank’s estimated clawback liability was $5.4 million, which was included in “Other liabilities” in the Consolidated Balance Sheets.

At March 31, 2017, the FDIC loss-sharing asset was comprised of a $2.5 million FDIC indemnification asset and a $773 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 months ended March 31, 2017 and 2016:

	Three Months Ended March 31,
	2017			2016
	(in thousands)
Balance at beginning of period	$	3,535		$	6,568
Adjustments not reflected in income:
Cash paid to the FDIC, net	184			353
FDIC reimbursable losses (recoveries), net	(206		)	136
Adjustments reflected in income:
Amortization, net	(315		)	(1,332		)
Loan impairment	40			147
Sale of other real estate	7			144
Valuation adjustments of other real estate owned	—			18
Other	(6		)	(80		)
Balance at end of period	$	3,239		$	5,954

The following table presents information about the composition of the FDIC loss-sharing asset, the clawback liability, the non-single family and the single family covered assets as of the date indicated:

	March 31, 2017
	Columbia River Bank		American Marine Bank		Summit Bank		First Heritage Bank		Total
	(in thousands)
FDIC loss-sharing asset (liability)	$	158	$	1,676	$	1,313	$	92	$	3,239
Clawback liability	$	3,362	$	1,275	$	—	$	743	$	5,380
Non-single family covered assets	$	50,590	$	8,885	$	4,788	$	9,728	$	73,991
Single family covered assets	$	5,721	$	15,319	$	4,182	$	1,223	$	26,445
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
Clawback settlement dates	First Quarter 2020		First Quarter 2020		Third Quarter 2021		Third Quarter 2021

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Goodwill and Intangible Assets

3 Months Ended

Mar. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

Goodwill and Other Intangible Assets

In accordance with the Intangibles – Goodwill and Other topic of the FASB ASC, goodwill is not amortized but is reviewed for potential impairment at the reporting unit level. Management analyzes its goodwill for impairment on an annual basis on July 31 and between annual tests in certain circumstances such as material adverse changes in legal, business, regulatory and economic factors. An impairment loss is recorded to the extent that the carrying amount of goodwill exceeds its implied fair value.

The core deposit intangible (“CDI”) is evaluated for impairment if events and circumstances indicate a possible impairment. The CDI is amortized on an accelerated basis over an estimated life of 10 years.

The following table sets forth activity for goodwill and other intangible assets for the periods indicated:

	Three Months Ended March 31,
	2017			2016
	(in thousands)
Goodwill
Total goodwill	$	382,762		$	382,762
Other intangible assets, net
Core deposit intangible:
Gross core deposit intangible balance at beginning of period	58,598			58,598
Accumulated amortization at beginning of period	(41,886		)	(35,940		)
Core deposit intangible, net at beginning of period	16,712			22,658
CDI current period amortization	(1,349		)	(1,583		)
Total core deposit intangible, net at end of period	15,363			21,075
Intangible assets not subject to amortization	919			919
Other intangible assets, net at end of period	16,282			21,994
Total goodwill and other intangible assets at end of period	$	399,044		$	404,756

The following table provides the estimated future amortization expense of core deposit intangibles for the remaining nine months ending December 31, 2017 and the succeeding four years:

	Amount
	(in thousands)
Year ending December 31,
2017	$	3,564
2018	3,855
2019	2,951
2020	2,048
2021	1,440

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Derivatives and Balance Sheet Offsetting

3 Months Ended

Mar. 31, 2017

General Discussion of Derivative Instruments and Hedging Activities [Abstract]

Derivatives and Hedging Activities

Derivatives and Balance Sheet Offsetting

The Company periodically enters into certain commercial loan interest rate swap agreements in order to provide commercial loan customers the ability to convert from variable to fixed interest rates. Under these agreements, the Company enters into a variable-rate loan agreement with a customer in addition to a swap agreement. This swap agreement effectively converts the customer’s variable rate loan into a fixed rate. The Company then enters into a corresponding swap agreement with a third-party in order to offset its exposure on the variable and fixed components of the customer agreement. As the interest rate swap agreements with the customers and third parties are not designated as hedges under the Derivatives and Hedging topic of the FASB ASC, the instruments are marked to market in earnings. The notional amount of open interest rate swap agreements at March 31, 2017 and December 31, 2016 was $336.1 million and $309.3 million, respectively. During the three months ended March 31, 2017, a mark-to-market gain of $4 thousand was recorded to “Other” noninterest expense. During the three months ended March 31, 2016, a mark-to-market loss of $8 thousand was recorded to “Other” noninterest expense.

The following table presents the fair value of derivatives not designated as hedging instruments at March 31, 2017 and December 31, 2016:

Asset Derivatives

Liability Derivatives

March 31, 2017

December 31, 2016

March 31, 2017

December 31, 2016

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

(in thousands)

Interest rate contracts

Other assets

$

8,598

Other assets

$

9,012

Other liabilities

$

8,618

Other liabilities

$

9,036

The Company is party to interest rate contracts and repurchase agreements that are subject to enforceable master netting arrangements or similar agreements. Under these agreements, the Company may have the right to net settle multiple contracts with the same counterparty. The following tables show the gross interest rate swap agreements and repurchase agreements in the Consolidated Balance Sheets and the respective collateral received or pledged in the form of other financial instruments, which are generally marketable securities. The collateral amounts in these tables are limited to the outstanding balances of the related asset or liability. Therefore, instances of overcollateralization are not shown.

	Gross Amounts of Recognized Assets/Liabilities		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Assets/Liabilities Presented in the Consolidated Balance Sheets		Gross Amounts Not Offset in the Consolidated Balance Sheets
							Collateral Posted			Net Amount
March 31, 2017	(in thousands)
Assets
Interest rate contracts	$	8,598	$	—	$	8,598	$	—		$	8,598
Liabilities
Interest rate contracts	$	8,618	$	—	$	8,618	$	(8,618	)	$	—
Repurchase agreements	$	46,914	$	—	$	46,914	$	(46,914	)	$	—
December 31, 2016
Assets
Interest rate contracts	$	9,012	$	—	$	9,012	$	—		$	9,012
Liabilities
Interest rate contracts	$	9,036	$	—	$	9,036	$	(9,036	)	$	—
Repurchase agreements	$	80,822	$	—	$	80,822	$	(80,822	)	$	—

The following table presents the class of collateral pledged for repurchase agreements as well as the remaining contractual maturity of the repurchase agreements:

	Remaining contractual maturity of the agreements
	Overnight and continuous		Up to 30 days		30 - 90 days		Greater than 90 days		Total
March 31, 2017	(in thousands)
Class of collateral pledged for repurchase agreements
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	21,914	$	—	$	—	$	25,000	$	46,914
Gross amount of recognized liabilities for repurchase agreements									46,914
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.

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Commitments and Contingent Liabilities

3 Months Ended

Mar. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies Disclosure [Text Block]

Commitments and Contingent Liabilities

Lease Commitments: The Company’s lease commitments consist primarily of leased locations under various non-cancellable operating leases that expire between 2017 and 2043. The majority of the leases contain renewal options and provisions for increases in rental rates based on an agreed upon index or predetermined escalation schedule.

Sale-leaseback transaction: On August 24, 2016, the Company sold one of its Washington facilities and leased back the portion of the facility utilized for branch operations. The lease term is through July 2026, with monthly payments of approximately $12 thousand. The resulting gain on sale of $742 thousand was deferred in accordance with the Leases topic of the FASB ASC and is being amortized over the life of the respective lease. At March 31, 2017, the deferred gain was $696 thousand and is a component of "Other liabilities" in the Consolidated Balance Sheets.

Financial Instruments with Off-Balance Sheet Risk: In the normal course of business, the Company makes loan commitments (typically unfunded loans and unused lines of credit) and issues standby letters of credit to accommodate the financial needs of its customers. At March 31, 2017 and December 31, 2016, the Company’s loan commitments amounted to$2.23 billion and $2.17 billion, respectively.

Standby letters of credit commit the Company to make payments on behalf of customers under specified conditions. Historically, no significant losses have been incurred by the Company under standby letters of credit. Both arrangements have credit risk essentially the same as that involved in extending loans to customers and are subject to the Company’s normal credit policies, including collateral requirements, where appropriate. Standby letters of credit were $47.6 million and $49.7 million at March 31, 2017 and December 31, 2016, respectively. In addition, commitments under commercial letters of credit used to facilitate customers’ trade transactions and other off-balance sheet liabilities amounted to $3.0 million and $3.4 million at March 31, 2017 and December 31, 2016, respectively.

Legal Proceedings: The Company and its subsidiaries are from time to time defendants in and are threatened with various legal proceedings arising from their regular business activities. Management, after consulting with legal counsel, is of the opinion that the ultimate liability, if any, resulting from these pending or threatened actions and proceedings will not have a material effect on the financial statements of the Company.

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Shareholders' Equity

3 Months Ended

Mar. 31, 2017

Stockholders' Equity Note [Abstract]

Shareholders' Equity

Shareholders’ Equity

Preferred Stock: In conjunction with the 2013 acquisition of West Coast Bancorp, the Company issued 8,782 shares of mandatorily convertible cumulative participating preferred stock, Series B (“Series B Preferred Stock”). On January 12, 2017, all outstanding shares of Series B Preferred Stock were converted to Company common stock.

Dividends: On January 26, 2017, the Company declared a quarterly cash dividend of $0.22 per common share payable on February 22, 2017 to shareholders of record at the close of business on February 8, 2017.

Subsequent to quarter end, on April 27, 2017, the Company declared a regular quarterly cash dividend of $0.22 per common share payable on May 24, 2017 to shareholders of record at the close of business on May 10, 2017.

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.

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Accumulated Other Comprehensive Income

3 Months Ended

Mar. 31, 2017

Accumulated Other Comprehensive Income (Loss) [Abstract]

Accumulated Other Comprehensive Income

Accumulated Other Comprehensive Loss

The following table shows changes in accumulated other comprehensive income (loss) by component for the three month periods ended March 31, 2017 and 2016:

	Unrealized Gains and Losses on Available-for-Sale Securities (1)			Unrealized Gains and Losses on Pension Plan Liability (1)			Total (1)
Three months ended March 31, 2017	(in thousands)
Beginning balance	$	(12,704	)	$	(6,295	)	$	(18,999	)
Other comprehensive income before reclassifications	1,702			4,604			6,306
Amounts reclassified from accumulated other comprehensive income	—			87			87
Net current-period other comprehensive income	1,702			4,691			6,393
Ending balance	$	(11,002	)	$	(1,604	)	$	(12,606	)
Three months ended March 31, 2016
Beginning balance	$	386		$	(6,681	)	$	(6,295	)
Other comprehensive income before reclassifications	18,770			—			18,770
Amounts reclassified from accumulated other comprehensive income (loss)	(238		)	106			(132		)
Net current-period other comprehensive income	18,532			106			18,638
Ending balance	$	18,918		$	(6,575	)	$	12,343

__________

(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 month periods ended March 31, 2017 and 2016:

	Amount Reclassified from Accumulated Other Comprehensive Income (Loss)
	Three Months Ended March 31,						Affected line Item in the Consolidated
	2017			2016			Statement of Income
	(in thousands)
Unrealized gains and losses on available-for-sale securities
Investment securities gains	$	—		$	373		Investment securities gains, net
	—			373			Total before tax
	—			(135		)	Income tax provision
	$	—		$	238		Net of tax
Amortization of pension plan liability
Actuarial losses	$	(136	)	$	(167	)	Compensation and employee benefits
	(136		)	(167		)	Total before tax
	49			61			Income tax benefit
	$	(87	)	$	(106	)	Net of tax

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Fair Value Accounting and Measurement

3 Months Ended

Mar. 31, 2017

Fair Value Disclosures [Abstract]

Fair Value Accounting and Measurement

Fair Value Accounting and Measurement

The Fair Value Measurements and Disclosures topic of the FASB ASC defines fair value, establishes a consistent framework for measuring fair value and expands disclosure requirements about fair value. We hold fixed and variable rate interest-bearing securities, investments in marketable equity securities and certain other financial instruments, which are carried at fair value. Fair value is determined based upon quoted prices when available or through the use of alternative approaches, such as matrix or model pricing, when market quotes are not readily accessible or available.

The valuation techniques are based upon observable and unobservable inputs. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect our own market assumptions. These two types of inputs create the following fair value hierarchy:

Level 1 – Quoted prices for identical instruments in active markets that are accessible at the measurement date.

Level 2 – Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model derived valuations whose inputs are observable or whose significant value drivers are observable.

Level 3 – Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable.

Fair values are determined as follows:

Securities at fair value are priced using a combination of market activity, industry recognized information sources, yield curves, discounted cash flow models and other factors. These fair value calculations are considered a Level 2 input method under the provisions of the Fair Value Measurements and Disclosures topic of the FASB ASC for all securities other than U.S. Treasury Notes, which are considered a Level 1 input method.

Interest rate contract positions are valued in models, which use as their basis, readily observable market parameters and are classified within Level 2 of the valuation hierarchy.

The following table sets forth the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis at March 31, 2017 and December 31, 2016 by level within the fair value hierarchy. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement:

	Fair value		Fair Value Measurements at Reporting Date Using
			Level 1		Level 2		Level 3
March 31, 2017	(in thousands)
Assets
Securities available for sale:
U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations	$	1,486,498	$	—	$	1,486,498	$	—
State and municipal debt securities	487,355		—		487,355		—
U.S. government agency and government-sponsored enterprise securities	352,183		—		352,183		—
U.S. government securities	252		252		—		—
Other securities	5,071		—		5,071		—
Total securities available for sale	$	2,331,359	$	252	$	2,331,107	$	—
Other assets (Interest rate contracts)	$	8,598	$	—	$	8,598	$	—
Liabilities
Other liabilities (Interest rate contracts)	$	8,618	$	—	$	8,618	$	—

	Fair value		Fair Value Measurements at Reporting Date Using
			Level 1		Level 2		Level 3
December 31, 2016	(in thousands)
Assets
Securities available for sale:
U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations	$	1,465,732	$	—	$	1,465,732	$	—
State and municipal debt securities	475,060		—		475,060		—
U.S. government agency and government-sponsored enterprise securities	331,902		—		331,902		—
U.S. government securities	800		800		—		—
Other securities	5,083		—		5,083		—
Total securities available for sale	$	2,278,577	$	800	$	2,277,777	$	—
Other assets (Interest rate contracts)	$	9,012	$	—	$	9,012	$	—
Liabilities
Other liabilities (Interest rate contracts)	$	9,036	$	—	$	9,036	$	—

There were no transfers between Level 1 and Level 2 of the valuation hierarchy during the three month periods ended March 31, 2017 and 2016. The Company recognizes transfers between levels of the valuation hierarchy based on the valuation level at the end of the reporting period.

Nonrecurring Measurements

Certain assets and liabilities are measured at fair value on a nonrecurring basis after initial recognition such as loans measured for impairment and OREO. The following methods were used to estimate the fair value of each such class of financial instrument:

Impaired loans—A loan is considered to be impaired when, based on current information and events, it is probable that the Company will be unable to collect all amounts due (both interest and principal) according to the contractual terms of the loan agreement. Impaired loans are measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate, a loan’s observable market price, or the fair market value of the collateral less estimated costs to sell if the loan is a collateral-dependent loan. Generally, the Company utilizes the fair market value of the collateral to measure impairment. The impairment evaluations are performed in conjunction with the allowance process on a quarterly basis by officers in the Special Credits group, which reports to the Chief Credit Officer. The Real Estate Appraisal Services Department (“REASD”), which also reports to the Chief Credit Officer, is responsible for obtaining appraisals from third-parties or performing internal evaluations. If an appraisal is obtained from a third-party, the REASD reviews the appraisal to evaluate the adequacy of the appraisal report, including its scope, methods, accuracy and reasonableness.

Other real estate owned—OREO is real property that the Bank has taken ownership of in partial or full satisfaction of a loan or loans. OREO is generally measured based on the property’s fair market value as indicated by an appraisal or a letter of intent to purchase. OREO is initially recorded at the fair value less estimated costs to sell. This amount becomes the property’s new basis. Any fair value adjustments based on the property’s fair value less estimated costs to sell at the date of acquisition are charged to the allowance, or in the event of a write-up without previous losses charged to the allowance, a credit to earnings is recorded. Management periodically reviews OREO in an effort to ensure the property is recorded at its fair value, net of estimated costs to sell. Any fair value adjustments subsequent to acquisition are charged or credited to earnings. The initial and subsequent evaluations are performed by officers in the Special Credits group, which reports to the Chief Credit Officer. The REASD obtains appraisals from third-parties for OREO and performs internal evaluations. If an appraisal is obtained from a third-party, the REASD reviews the appraisal to evaluate the adequacy of the appraisal report, including its scope, methods, accuracy and reasonableness.

The following tables set forth information related to the Company’s assets that were measured using fair value estimates on a nonrecurring basis during the current and prior year quarterly periods:

	Fair value at March 31, 2017		Fair Value Measurements at Reporting Date Using						Losses During the Three Months Ended March 31, 2017
			Level 1		Level 2		Level 3
	(in thousands)
OREO	$	1,260	$	—	$	—	$	1,260	$	193
	$	1,260	$	—	$	—	$	1,260	$	193

	Fair value at March 31, 2016		Fair Value Measurements at Reporting Date Using						Losses During the Three Months Ended March 31, 2016
			Level 1		Level 2		Level 3
	(in thousands)
Impaired loans	$	10,681	$	—	$	—	$	10,681	$	2,676
OREO	2,553		—		—		2,553		137
	$	13,234	$	—	$	—	$	13,234	$	2,813

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 March 31, 2017		Valuation Technique	Unobservable Input	Range (Weighted Average) (1)
	(dollars in thousands)
OREO	$	1,260	Fair Market Value of Collateral	Adjustment to Appraisal Value	N/A (2)
(1) Discount applied to appraisal value.
(2) Quantitative disclosures are not provided for OREO because there were no adjustments made to the appraisal values.

	Fair value at March 31, 2016		Valuation Technique	Unobservable Input	Range (Weighted Average) (1)
	(dollars in thousands)
Impaired loans	$	10,681	Fair Market Value of Collateral	Adjustment to Stated Value	0% - 7% (6%)
OREO	$	2,553	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 OREO because there were no adjustments made to the appraisal values.

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 March 31, 2017 or December 31, 2016, for loans which mirror the attributes of the loans with similar rate structures and average maturities. The fair values resulting from these calculations are reduced by an amount representing the change in estimated fair value attributable to changes in borrowers’ credit quality since the loans were originated. For nonperforming loans, fair value is estimated by applying a valuation discount based upon loan sales data from the FDIC. For PCI loans, fair value is estimated by discounting the expected future cash flows using a lending rate that would have been offered on March 31, 2017 (Level 3).

FDIC loss-sharing asset —The fair value of the FDIC loss-sharing asset is estimated based on discounting the expected future cash flows using an estimated market rate (Level 3).

Interest rate contracts—Interest rate swap positions are valued in discounted cash flow models, which use readily observable market parameters as their basis (Level 2).

Deposits—For deposits with no contractual maturity, the fair value is equal to the carrying value (Level 1). The fair value of fixed maturity deposits is based on discounted cash flows using the difference between the deposit rate and current market rates for deposits of similar remaining maturities (Level 2).

FHLB advances—The fair value of FHLB advances is estimated based on discounting the future cash flows using the market rate currently offered (Level 2).

Repurchase Agreements—The fair value of term repurchase agreements is estimated based on discounting the future cash flows using the market rate currently offered. The carrying amount of sweep repurchase agreements approximates their fair values due to the short period of time between repricing dates (Level 2).

Other Financial Instruments—The majority of our commitments to extend credit and standby letters of credit carry current market interest rates if converted to loans, as such, carrying value is assumed to equal fair value.

The following tables summarize carrying amounts and estimated fair values of selected financial instruments as well as assumptions used by the Company in estimating fair value at March 31, 2017 and December 31, 2016:

	March 31, 2017
	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
	(in thousands)
Assets
Cash and due from banks	$	169,697	$	169,697	$	169,697	$	—	$	—
Interest-earning deposits with banks	13,124		13,124		13,124		—		—
Securities available for sale	2,331,359		2,331,359		252		2,331,107		—
FHLB stock	10,600		10,600		—		10,600		—
Loans held for sale	3,245		3,245		—		3,245		—
Loans	6,157,115		6,042,895		—		—		6,042,895
FDIC loss-sharing asset	3,239		921		—		—		921
Interest rate contracts	8,598		8,598		—		8,598		—
Liabilities
Deposits	$	8,088,827	$	8,084,550	$	7,699,879	$	384,671	$	—
FHLB advances	15,483		16,110		—		16,110		—
Repurchase agreements	46,914		47,099		—		47,099		—
Interest rate contracts	8,618		8,618		—		8,618		—

	December 31, 2016
	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
	(in thousands)
Assets
Cash and due from banks	$	193,038	$	193,038	$	193,038	$	—	$	—
Interest-earning deposits with banks	31,200		31,200		31,200		—		—
Securities available for sale	2,278,577		2,278,577		800		2,277,777		—
FHLB stock	10,240		10,240		—		10,240		—
Loans held for sale	5,846		5,846		—		5,846		—
Loans	6,143,380		6,040,439		—		—		6,040,439
FDIC loss-sharing asset	3,535		867		—		—		867
Interest rate contracts	9,012		9,012		—		9,012		—
Liabilities
Deposits	$	8,059,415	$	8,055,168	$	7,653,122	$	402,046	$	—
FHLB advances	6,493		7,070		—		7,070		—
Repurchase agreements	80,822		81,131		—		81,131		—
Interest rate contracts	9,036		9,036		—		9,036		—

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Earnings per Common Share

3 Months Ended

Mar. 31, 2017

Earnings Per Share [Abstract]

Earnings Per Common Share

Earnings per Common Share

The Company applies the two-class method of computing basic and diluted EPS. Under the two-class method, EPS is determined for each class of common stock and participating security according to dividends declared and participation rights in undistributed earnings. The Company issues restricted shares under share-based compensation plans and preferred shares which qualify as participating securities.

The following table sets forth the computation of basic and diluted earnings per share for the three months ended March 31, 2017 and 2016:

	Three Months Ended
	March 31,
	2017		2016
	(in thousands except per share)
Basic EPS:
Net income	$	29,199	$	21,259
Less: Earnings allocated to participating securities:
Preferred shares	3		39
Nonvested restricted shares	397		247
Earnings allocated to common shareholders	$	28,799	$	20,973
Weighted average common shares outstanding	57,388		57,114
Basic earnings per common share	$	0.50	$	0.37
Diluted EPS:
Earnings allocated to common shareholders	$	28,799	$	20,973
Weighted average common shares outstanding	57,388		57,114
Dilutive effect of equity awards	6		11
Weighted average diluted common shares outstanding	57,394		57,125
Diluted earnings per common share	$	0.50	$	0.37
Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive	14		27

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Securities (Tables)

3 Months Ended

Mar. 31, 2017

Available-for-sale Securities [Abstract]

Securities Available for Sale

The following table summarizes the amortized cost, gross unrealized gains and losses and the resulting fair value of securities available for sale:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
March 31, 2017
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	1,506,914	$	2,400	$	(22,816	)	$	1,486,498
State and municipal securities	484,376		7,316		(4,337		)	487,355
U.S. government agency and government-sponsored enterprise securities	352,323		1,241		(1,381		)	352,183
U.S. government securities	252		—		—			252
Other securities	5,284		60		(273		)	5,071
Total	$	2,349,149	$	11,017	$	(28,807	)	$	2,331,359
December 31, 2016
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	1,486,690	$	2,760	$	(23,718	)	$	1,465,732
State and municipal securities	473,914		6,343		(5,197		)	475,060
U.S. government agency and government-sponsored enterprise securities	332,348		1,065		(1,511		)	331,902
U.S. government securities	801		—		(1		)	800
Other securities	5,284		63		(264		)	5,083
Total	$	2,299,037	$	10,231	$	(30,691	)	$	2,278,577

Schedule of gross realized gains and losses on sales and calls of securities available for sale

The following table provides the gross realized gains and losses on the sales of securities for the periods indicated:

	Three Months Ended
	March 31,
	2017		2016
	(in thousands)
Gross realized gains	$	—	$	373
Gross realized losses	—		—
Net realized gains	$	—	$	373

Schedule of Contractual Maturities of Investment Securities Available for Sale

The scheduled contractual maturities of investment securities available for sale at March 31, 2017 are presented as follows:

	March 31, 2017
	Amortized Cost		Fair Value
	(in thousands)
Due within one year	$	53,518	$	53,606
Due after one year through five years	502,633		505,398
Due after five years through ten years	731,123		724,361
Due after ten years	1,056,591		1,042,923
Other securities with no stated maturity	5,284		5,071
Total investment securities available-for-sale	$	2,349,149	$	2,331,359

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:

	March 31, 2017
	(in thousands)
Washington and Oregon State to secure public deposits	$	228,794
Federal Reserve Bank to secure borrowings	54,551
Other securities pledged	125,954
Total securities pledged as collateral	$	409,299

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 March 31, 2017 and December 31, 2016:

	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
	(in thousands)
March 31, 2017
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	1,038,971	$	(17,020	)	$	155,846	$	(5,796	)	$	1,194,817	$	(22,816	)
State and municipal securities	162,860		(4,249		)	3,412		(88		)	166,272		(4,337		)
U.S. government agency and government-sponsored enterprise securities	193,846		(1,381		)	—		—			193,846		(1,381		)
U.S. government securities	251		—			—		—			251		—
Other securities	2,263		(51		)	2,734		(222		)	4,997		(273		)
Total	$	1,398,191	$	(22,701	)	$	161,992	$	(6,106	)	$	1,560,183	$	(28,807	)
December 31, 2016
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	1,029,116	$	(18,788	)	$	159,046	$	(4,930	)	$	1,188,162	$	(23,718	)
State and municipal securities	211,342		(5,064		)	3,384		(133		)	214,726		(5,197		)
U.S. government agency and government-sponsored enterprise securities	218,811		(1,511		)	—		—			218,811		(1,511		)
U.S. government securities	251		(1		)	—		—			251		(1		)
Other securities	2,263		(51		)	2,743		(213		)	5,006		(264		)
Total	$	1,461,783	$	(25,415	)	$	165,173	$	(5,276	)	$	1,626,956	$	(30,691	)

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Loans (Tables)

3 Months Ended

Mar. 31, 2017

Financing Receivable, Recorded Investment [Line Items]

Analysis of Loan Portfolio by Major Types of Loans

The following is an analysis of the loan portfolio by segment (net of unearned income):

	March 31, 2017									December 31, 2016
	Loans, excluding PCI loans			PCI Loans			Total			Loans, excluding PCI loans			PCI Loans			Total
	(in thousands)
Commercial business	$	2,559,247		$	19,047		$	2,578,294		$	2,551,054		$	20,185		$	2,571,239
Real estate:
One-to-four family residential	172,581			14,969			187,550			170,331			17,862			188,193
Commercial and multifamily residential	2,783,433			88,527			2,871,960			2,719,830			89,231			2,809,061
Total real estate	2,956,014			103,496			3,059,510			2,890,161			107,093			2,997,254
Real estate construction:
One-to-four family residential	115,219			479			115,698			121,887			832			122,719
Commercial and multifamily residential	172,895			989			173,884			209,118			1,565			210,683
Total real estate construction	288,114			1,468			289,582			331,005			2,397			333,402
Consumer	318,069			14,893			332,962			329,261			15,985			345,246
Less: Net unearned income	(32,212		)	—			(32,212		)	(33,718		)	—			(33,718		)
Total loans, net of unearned income	6,089,232			138,904			6,228,136			6,067,763			145,660			6,213,423
Less: Allowance for loan and lease losses	(61,626		)	(9,395		)	(71,021		)	(59,528		)	(10,515		)	(70,043		)
Total loans, net	$	6,027,606		$	129,509		$	6,157,115		$	6,008,235		$	135,145		$	6,143,380
Loans held for sale	$	3,245		$	—		$	3,245		$	5,846		$	—		$	5,846

Loans, Excluding Purchased Credit Impaired Loans [Member]

Financing Receivable, Recorded Investment [Line Items]

Analysis of Nonaccrual Loans

The following is an analysis of nonaccrual loans as of March 31, 2017 and December 31, 2016:

	March 31, 2017				December 31, 2016
	Recorded Investment Nonaccrual Loans		Unpaid Principal Balance Nonaccrual Loans		Recorded Investment Nonaccrual Loans		Unpaid Principal Balance Nonaccrual Loans
	(in thousands)
Commercial business:
Secured	$	10,659	$	21,144	$	11,524	$	21,503
Unsecured	189		457		31		303
Real estate:
One-to-four family residential	450		1,703		568		1,302
Commercial & multifamily residential:
Commercial land	2,729		2,726		934		922
Income property	3,290		3,561		4,005		4,247
Owner occupied	4,218		8,544		6,248		9,030
Real estate construction:
One-to-four family residential:
Land and acquisition	—		—		14		102
Residential construction	213		213		549		549
Consumer	3,799		4,180		3,883		4,331
Total	$	25,547	$	42,528	$	27,756	$	42,289

Analysis of the Aged Loan Portfolio

The following is an aging of the recorded investment of the loan portfolio as of March 31, 2017 and December 31, 2016:

	Current Loans		30 - 59 Days Past Due		60 - 89 Days Past Due		Greater than 90 Days Past Due		Total Past Due		Nonaccrual Loans		Total Loans
March 31, 2017	(in thousands)
Commercial business:
Secured	$	2,447,180	$	6,417	$	204	$	—	$	6,621	$	10,659	$	2,464,460
Unsecured	90,245		34		5		—		39		189		90,473
Real estate:
One-to-four family residential	168,634		1,115		—		—		1,115		450		170,199
Commercial & multifamily residential:
Commercial land	280,562		—		—		—		—		2,729		283,291
Income property	1,366,062		583		140		—		723		3,290		1,370,075
Owner occupied	1,107,061		—		45		—		45		4,218		1,111,324
Real estate construction:
One-to-four family residential:
Land and acquisition	6,770		29		—		—		29		—		6,799
Residential construction	107,382		189		—		—		189		213		107,784
Commercial & multifamily residential:
Income property	106,227		—		—		—		—		—		106,227
Owner occupied	64,365		—		—		—		—		—		64,365
Consumer	308,902		907		627		—		1,534		3,799		314,235
Total	$	6,053,390	$	9,274	$	1,021	$	—	$	10,295	$	25,547	$	6,089,232
	Current Loans		30 - 59 Days Past Due		60 - 89 Days Past Due		Greater than 90 Days Past Due		Total Past Due		Nonaccrual Loans		Total Loans
December 31, 2016	(in thousands)
Commercial business:
Secured	$	2,439,250	$	806	$	10	$	—	$	816	$	11,524	$	2,451,590
Unsecured	94,118		287		301		—		588		31		94,737
Real estate:
One-to-four family residential	164,416		2,448		500		—		2,948		568		167,932
Commercial & multifamily residential:
Commercial land	269,816		64		—		—		64		934		270,814
Income property	1,365,150		480		111		—		591		4,005		1,369,746
Owner occupied	1,052,078		1,652		—		—		1,652		6,248		1,059,978
Real estate construction:
One-to-four family residential:
Land and acquisition	11,542		—		—		—		—		14		11,556
Residential construction	109,080		—		—		—		—		549		109,629
Commercial & multifamily residential:
Income property	103,779		—		—		—		—		—		103,779
Owner occupied	103,480		—		—		—		—		—		103,480
Consumer	318,369		2,035		235		—		2,270		3,883		324,522
Total	$	6,031,078	$	7,772	$	1,157	$	—	$	8,929	$	27,756	$	6,067,763

Impaired Financing Receivables

The following is an analysis of impaired loans as of March 31, 2017 and December 31, 2016:

	Recorded Investment of Loans Collectively Measured for Contingency Provision		Recorded Investment of Loans Individually Measured for Specific Impairment		Impaired Loans With Recorded Allowance						Impaired Loans Without Recorded Allowance
					Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance
March 31, 2017	(in thousands)
Commercial business:
Secured	$	2,456,672	$	7,788	$	—	$	—	$	—	$	7,788	$	14,806
Unsecured	90,473		—		—		—		—		—		—
Real estate:
One-to-four family residential	169,686		513		424		688		11		89		287
Commercial & multifamily residential:
Commercial land	280,992		2,299		—		—		—		2,299		2,288
Income property	1,366,381		3,694		533		537		26		3,161		3,656
Owner occupied	1,107,814		3,510		—		—		—		3,510		6,327
Real estate construction:
One-to-four family residential:
Land and acquisition	6,799		—		—		—		—		—		—
Residential construction	107,784		—		—		—		—		—		—
Commercial & multifamily residential:
Income property	106,227		—		—		—		—		—		—
Owner occupied	64,365		—		—		—		—		—		—
Consumer	308,710		5,525		4,923		5,013		57		602		682
Total	$	6,065,903	$	23,329	$	5,880	$	6,238	$	94	$	17,449	$	28,046
	Recorded Investment of Loans Collectively Measured for Contingency Provision		Recorded Investment of Loans Individually Measured for Specific Impairment		Impaired Loans With Recorded Allowance						Impaired Loans Without Recorded Allowance
					Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance
December 31, 2016	(in thousands)
Commercial business:
Secured	$	2,442,772	$	8,818	$	2,414	$	2,484	$	664	$	6,404	$	12,831
Unsecured	94,737		—		—		—		—		—		—
Real estate:
One-to-four family residential	167,403		529		435		693		12		94		291
Commercial & multifamily residential:
Commercial land	270,106		708		—		—		—		708		687
Income property	1,365,321		4,425		540		544		27		3,885		4,148
Owner occupied	1,054,564		5,414		—		—		—		5,414		8,102
Real estate construction:
One-to-four family residential:
Land and acquisition	11,542		14		14		102		1		—		—
Residential construction	109,293		336		—		—		—		336		336
Commercial & multifamily residential:
Income property	103,779		—		—		—		—		—		—
Owner occupied	103,480		—		—		—		—		—		—
Consumer	319,307		5,215		4,464		4,558		57		751		833
Total	$	6,042,304	$	25,459	$	7,867	$	8,381	$	761	$	17,592	$	27,228

The following table provides additional information on impaired loans for the three month periods indicated:

	Three Months Ended March 31,
	2017				2016
	Average Recorded Investment Impaired Loans		Interest Recognized on Impaired Loans		Average Recorded Investment Impaired Loans		Interest Recognized on Impaired Loans
	(in thousands)
Commercial business:
Secured	$	8,303	$	19	$	12,103	$	17
Real estate:
One-to-four family residential	521		2		975		6
Commercial & multifamily residential:
Commercial land	1,504		—		—		—
Income property	4,059		1		2,080		3
Owner occupied	4,462		—		5,516		7
Real estate construction:
One-to-four family residential:
Land and acquisition	7		—		388		1
Residential construction	168		—		562		—
Consumer	5,370		27		824		2
Total	$	24,394	$	49	$	22,448	$	36

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

The following is an analysis of loans classified as troubled debt restructurings (“TDR”) during the three months ended March 31, 2017 and 2016:

	Three months ended March 31, 2017					Three months ended March 31, 2016
	Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment
	(dollars in thousands)
Commercial business:
Secured	3	$	356	$	356	3	$	1,370	$	1,370
Real estate:
Commercial and multifamily residential:
Owner occupied	—	—		—		1	250		250
Consumer	10	1,546		1,546		4	497		497
Total	13	$	1,902	$	1,902	8	$	2,117	$	2,117

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 March 31, 2017 and December 31, 2016:

	March 31, 2017		December 31, 2016
	(in thousands)
Commercial business	$	20,292	$	21,606
Real estate:
One-to-four family residential	17,608		20,643
Commercial and multifamily residential	92,930		94,795
Total real estate	110,538		115,438
Real estate construction:
One-to-four family residential	479		832
Commercial and multifamily residential	1,089		1,726
Total real estate construction	1,568		2,558
Consumer	16,485		17,649
Subtotal of PCI loans	148,883		157,251
Less:
Valuation discount resulting from acquisition accounting	9,979		11,591
Allowance for loan losses	9,395		10,515
PCI loans, net of allowance for loan losses	$	129,509	$	135,145

Changes in Accretable Yield for Acquired Loans

The following table shows the changes in accretable yield for PCI loans for the three months ended March 31, 2017 and 2016:

	Three Months Ended March 31,
	2017			2016
	(in thousands)
Balance at beginning of period	$	45,191		$	58,981
Accretion	(4,182		)	(4,229		)
Disposals	(158		)	94
Reclassifications from (to) nonaccretable difference	(2,407		)	1,761
Balance at end of period	$	38,444		$	56,607

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Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Tables)

3 Months Ended

Mar. 31, 2017

Financing Receivable, Allowance for Credit Losses [Line Items]

Allowance for Credit Losses on Financing Receivables

The following tables show a detailed analysis of the allowance for the three months ended March 31, 2017 and 2016:

	Beginning Balance		Charge-offs			Recoveries		Provision (Recovery)			Ending Balance		Specific Reserve		General Allocation
Three months ended March 31, 2017	(in thousands)
Commercial business:
Secured	$	36,050	$	(1,109	)	$	297	$	434		$	35,672	$	—	$	35,672
Unsecured	960		(18		)	68		178			1,188		—		1,188
Real estate:
One-to-four family residential	599		(307		)	117		236			645		11		634
Commercial & multifamily residential:
Commercial land	1,797		—			—		491			2,288		—		2,288
Income property	7,342		—			35		(574		)	6,803		26		6,777
Owner occupied	6,439		—			43		52			6,534		—		6,534
Real estate construction:
One-to-four family residential:
Land and acquisition	316		(14		)	20		187			509		—		509
Residential construction	669		—			9		431			1,109		—		1,109
Commercial & multifamily residential:
Income property	404		—			—		378			782		—		782
Owner occupied	1,192		—			—		576			1,768		—		1,768
Consumer	3,534		(428		)	285		(31		)	3,360		57		3,303
Purchased credit impaired	10,515		(1,939		)	1,144		(325		)	9,395		—		9,395
Unallocated	226		—			—		742			968		—		968
Total	$	70,043	$	(3,815	)	$	2,018	$	2,775		$	71,021	$	94	$	70,927

	Beginning Balance		Charge-offs			Recoveries		Provision (Recovery)			Ending Balance		Specific Reserve		General Allocation
Three months ended March 31, 2016	(in thousands)
Commercial business:
Secured	$	32,321	$	(3,770	)	$	611	$	2,952		$	32,114	$	2,500	$	29,614
Unsecured	1,299		(3		)	51		(47		)	1,300		—		1,300
Real estate:
One-to-four family residential	916		—			41		(303		)	654		—		654
Commercial & multifamily residential:
Commercial land	1,178		—			—		84			1,262		—		1,262
Income property	6,616		—			61		725			7,402		—		7,402
Owner occupied	5,550		—			8		528			6,086		—		6,086
Real estate construction:
One-to-four family residential:
Land and acquisition	339		—			51		250			640		—		640
Residential construction	733		—			203		513			1,449		—		1,449
Commercial & multifamily residential:
Income property	388		—			1		326			715		—		715
Owner occupied	1,006		—			—		204			1,210		—		1,210
Consumer	3,531		(266		)	165		(62		)	3,368		15		3,353
Purchased credit impaired	13,726		(2,866		)	1,551		653			13,064		—		13,064
Unallocated	569		—			—		(569		)	—		—		—
Total	$	68,172	$	(6,905	)	$	2,743	$	5,254		$	69,264	$	2,515	$	66,749

Changes in the Allowance for Unfunded Commitments and Letters of Credit

Changes in the allowance for unfunded commitments and letters of credit, a component of “Other liabilities” in the Consolidated Balance Sheets, are summarized as follows:

	Three Months Ended
	March 31,
	2017		2016
	(in thousands)
Balance at beginning of period	$	2,705	$	2,930
Net changes in the allowance for unfunded commitments and letters of credit	850		—
Balance at end of period	$	3,555	$	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 March 31, 2017 and December 31, 2016:

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
March 31, 2017	(in thousands)
Loans, excluding PCI loans:
Commercial business:
Secured	$	2,297,687	$	40,267	$	126,506	$	—	$	—	$	2,464,460
Unsecured	89,171		850		452		—		—		90,473
Real estate:
One-to-four family residential	169,158		—		1,041		—		—		170,199
Commercial and multifamily residential:
Commercial land	270,840		5,199		7,252		—		—		283,291
Income property	1,345,290		6,321		18,464		—		—		1,370,075
Owner occupied	1,077,648		3,673		30,003		—		—		1,111,324
Real estate construction:
One-to-four family residential:
Land and acquisition	6,799		—		—		—		—		6,799
Residential construction	107,571		—		213		—		—		107,784
Commercial and multifamily residential:
Income property	106,227		—		—		—		—		106,227
Owner occupied	60,315		—		4,050		—		—		64,365
Consumer	307,559		1		6,675		—		—		314,235
Total	$	5,838,265	$	56,311	$	194,656	$	—	$	—	6,089,232
Less:
Allowance for loan and lease losses											61,626
Loans, excluding PCI loans, net											$	6,027,606

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
December 31, 2016	(in thousands)
Loans, excluding PCI loans:
Commercial business:
Secured	$	2,289,307	$	65,846	$	96,437	$	—	$	—	$	2,451,590
Unsecured	93,721		800		216		—		—		94,737
Real estate:
One-to-four family residential	164,797		395		2,740		—		—		167,932
Commercial and multifamily residential:
Commercial land	263,195		3,228		4,391		—		—		270,814
Income property	1,341,978		17,902		9,866		—		—		1,369,746
Owner occupied	1,027,019		6,608		26,351		—		—		1,059,978
Real estate construction:
One-to-four family residential:
Land and acquisition	11,541		—		15		—		—		11,556
Residential construction	108,941		—		688		—		—		109,629
Commercial and multifamily residential:
Income property	103,779		—		—		—		—		103,779
Owner occupied	98,948		88		4,444		—		—		103,480
Consumer	317,728		—		6,794		—		—		324,522
Total	$	5,820,954	$	94,867	$	151,942	$	—	$	—	6,067,763
Less:
Allowance for loan and lease losses											59,528
Loans, excluding PCI loans, net											$	6,008,235

The following is an analysis of the credit quality of our PCI loan portfolio as of March 31, 2017 and December 31, 2016:

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
March 31, 2017	(in thousands)
PCI loans:
Commercial business:
Secured	$	18,443	$	89	$	1,022	$	—	$	—	$	19,554
Unsecured	738		—		—		—		—		738
Real estate:
One-to-four family residential	16,571		—		1,037		—		—		17,608
Commercial and multifamily residential:
Commercial land	8,703		2,032		—		—		—		10,735
Income property	27,857		—		138		—		—		27,995
Owner occupied	53,380		—		820		—		—		54,200
Real estate construction:
One-to-four family residential:
Land and acquisition	401		—		78		—		—		479
Residential construction	—		—		—		—		—		—
Commercial and multifamily residential:
Income property	799		—		—		—		—		799
Owner occupied	290		—		—		—		—		290
Consumer	16,045		—		440		—		—		16,485
Total	$	143,227	$	2,121	$	3,535	$	—	$	—	148,883
Less:
Valuation discount resulting from acquisition accounting											9,979
Allowance for loan losses											9,395
PCI loans, net											$	129,509

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
December 31, 2016	(in thousands)
PCI loans:
Commercial business:
Secured	$	18,824	$	92	$	1,954	$	—	$	—	$	20,870
Unsecured	736		—		—		—		—		736
Real estate:
One-to-four family residential	19,293		—		1,350		—		—		20,643
Commercial and multifamily residential:
Commercial land	7,333		—		213		—		—		7,546
Income property	31,042		—		1,678		—		—		32,720
Owner occupied	53,623		—		906		—		—		54,529
Real estate construction:
One-to-four family residential:
Land and acquisition	744		—		88		—		—		832
Residential construction	—		—		—		—		—		—
Commercial and multifamily residential:
Income property	1,217		—		—		—		—		1,217
Owner occupied	509		—		—		—		—		509
Consumer	17,202		—		447		—		—		17,649
Total	$	150,523	$	92	$	6,636	$	—	$	—	157,251
Less:
Valuation discount resulting from acquisition accounting											11,591
Allowance for loan losses											10,515
PCI loans, net											$	135,145

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Other Real Estate Owned (Tables)

3 Months Ended

Mar. 31, 2017

Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]

Summary of Other Real Estate Owned

The following tables set forth activity in OREO for the three months ended March 31, 2017 and 2016:

	Three Months Ended March 31,
	2017			2016
	(in thousands)
Balance, beginning of period	$	5,998		$	13,738
Transfers in	—			105
Valuation adjustments	(193		)	(137		)
Proceeds from sale of OREO property	(1,275		)	(1,326		)
Gain (loss) on sale of OREO, net	(11		)	47
Balance, end of period	$	4,519		$	12,427

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Covered Assets and FDIC Loss-sharing Asset (Tables)

3 Months Ended

Mar. 31, 2017

Covered Assets And FDIC Loss Sharing Asset [Line Items]

FDIC Loss-sharing Asset

The following table shows a detailed analysis of the FDIC loss-sharing asset for the three months ended March 31, 2017 and 2016:

	Three Months Ended March 31,
	2017			2016
	(in thousands)
Balance at beginning of period	$	3,535		$	6,568
Adjustments not reflected in income:
Cash paid to the FDIC, net	184			353
FDIC reimbursable losses (recoveries), net	(206		)	136
Adjustments reflected in income:
Amortization, net	(315		)	(1,332		)
Loan impairment	40			147
Sale of other real estate	7			144
Valuation adjustments of other real estate owned	—			18
Other	(6		)	(80		)
Balance at end of period	$	3,239		$	5,954

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, the non-single family and the single family covered assets as of the date indicated:

	March 31, 2017
	Columbia River Bank		American Marine Bank		Summit Bank		First Heritage Bank		Total
	(in thousands)
FDIC loss-sharing asset (liability)	$	158	$	1,676	$	1,313	$	92	$	3,239
Clawback liability	$	3,362	$	1,275	$	—	$	743	$	5,380
Non-single family covered assets	$	50,590	$	8,885	$	4,788	$	9,728	$	73,991
Single family covered assets	$	5,721	$	15,319	$	4,182	$	1,223	$	26,445
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
Clawback settlement dates	First Quarter 2020		First Quarter 2020		Third Quarter 2021		Third Quarter 2021

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Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill and Intangible Assets

The following table sets forth activity for goodwill and other intangible assets for the periods indicated:

	Three Months Ended March 31,
	2017			2016
	(in thousands)
Goodwill
Total goodwill	$	382,762		$	382,762
Other intangible assets, net
Core deposit intangible:
Gross core deposit intangible balance at beginning of period	58,598			58,598
Accumulated amortization at beginning of period	(41,886		)	(35,940		)
Core deposit intangible, net at beginning of period	16,712			22,658
CDI current period amortization	(1,349		)	(1,583		)
Total core deposit intangible, net at end of period	15,363			21,075
Intangible assets not subject to amortization	919			919
Other intangible assets, net at end of period	16,282			21,994
Total goodwill and other intangible assets at end of period	$	399,044		$	404,756

Estimated Future Amortization Expense of Core Deposit Intangibles

The following table provides the estimated future amortization expense of core deposit intangibles for the remaining nine months ending December 31, 2017 and the succeeding four years:

	Amount
	(in thousands)
Year ending December 31,
2017	$	3,564
2018	3,855
2019	2,951
2020	2,048
2021	1,440

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Derivatives and Balance Sheet Offsetting (Tables)

3 Months Ended

Mar. 31, 2017

Derivative [Line Items]

Balance Sheet Offsetting [Table Text Block]

The following tables show the gross interest rate swap agreements and repurchase agreements in the Consolidated Balance Sheets and the respective collateral received or pledged in the form of other financial instruments, which are generally marketable securities. The collateral amounts in these tables are limited to the outstanding balances of the related asset or liability. Therefore, instances of overcollateralization are not shown.

	Gross Amounts of Recognized Assets/Liabilities		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Assets/Liabilities Presented in the Consolidated Balance Sheets		Gross Amounts Not Offset in the Consolidated Balance Sheets
							Collateral Posted			Net Amount
March 31, 2017	(in thousands)
Assets
Interest rate contracts	$	8,598	$	—	$	8,598	$	—		$	8,598
Liabilities
Interest rate contracts	$	8,618	$	—	$	8,618	$	(8,618	)	$	—
Repurchase agreements	$	46,914	$	—	$	46,914	$	(46,914	)	$	—
December 31, 2016
Assets
Interest rate contracts	$	9,012	$	—	$	9,012	$	—		$	9,012
Liabilities
Interest rate contracts	$	9,036	$	—	$	9,036	$	(9,036	)	$	—
Repurchase agreements	$	80,822	$	—	$	80,822	$	(80,822	)	$	—

Carrying Value of Securities Pledged As Collateral

The following table summarizes the carrying value of securities pledged as collateral to secure public deposits, borrowings and other purposes as permitted or required by law:

	March 31, 2017
	(in thousands)
Washington and Oregon State to secure public deposits	$	228,794
Federal Reserve Bank to secure borrowings	54,551
Other securities pledged	125,954
Total securities pledged as collateral	$	409,299

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 March 31, 2017 and December 31, 2016:

Asset Derivatives

Liability Derivatives

March 31, 2017

December 31, 2016

March 31, 2017

December 31, 2016

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

(in thousands)

Interest rate contracts

Other assets

$

8,598

Other assets

$

9,012

Other liabilities

$

8,618

Other liabilities

$

9,036

Available-for-sale Securities [Member]

Derivative [Line Items]

Carrying Value of Securities Pledged As Collateral

The following table presents the class of collateral pledged for repurchase agreements as well as the remaining contractual maturity of the repurchase agreements:

	Remaining contractual maturity of the agreements
	Overnight and continuous		Up to 30 days		30 - 90 days		Greater than 90 days		Total
March 31, 2017	(in thousands)
Class of collateral pledged for repurchase agreements
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	21,914	$	—	$	—	$	25,000	$	46,914
Gross amount of recognized liabilities for repurchase agreements									46,914
Amounts related to agreements not included in offsetting disclosure									$	—

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Accumulated Other Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2017

Accumulated Other Comprehensive Income (Loss) [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The following table shows changes in accumulated other comprehensive income (loss) by component for the three month periods ended March 31, 2017 and 2016:

	Unrealized Gains and Losses on Available-for-Sale Securities (1)			Unrealized Gains and Losses on Pension Plan Liability (1)			Total (1)
Three months ended March 31, 2017	(in thousands)
Beginning balance	$	(12,704	)	$	(6,295	)	$	(18,999	)
Other comprehensive income before reclassifications	1,702			4,604			6,306
Amounts reclassified from accumulated other comprehensive income	—			87			87
Net current-period other comprehensive income	1,702			4,691			6,393
Ending balance	$	(11,002	)	$	(1,604	)	$	(12,606	)
Three months ended March 31, 2016
Beginning balance	$	386		$	(6,681	)	$	(6,295	)
Other comprehensive income before reclassifications	18,770			—			18,770
Amounts reclassified from accumulated other comprehensive income (loss)	(238		)	106			(132		)
Net current-period other comprehensive income	18,532			106			18,638
Ending balance	$	18,918		$	(6,575	)	$	12,343

__________

(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 month periods ended March 31, 2017 and 2016:

	Amount Reclassified from Accumulated Other Comprehensive Income (Loss)
	Three Months Ended March 31,						Affected line Item in the Consolidated
	2017			2016			Statement of Income
	(in thousands)
Unrealized gains and losses on available-for-sale securities
Investment securities gains	$	—		$	373		Investment securities gains, net
	—			373			Total before tax
	—			(135		)	Income tax provision
	$	—		$	238		Net of tax
Amortization of pension plan liability
Actuarial losses	$	(136	)	$	(167	)	Compensation and employee benefits
	(136		)	(167		)	Total before tax
	49			61			Income tax benefit
	$	(87	)	$	(106	)	Net of tax

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Fair Value Accounting and Measurement (Tables)

3 Months Ended

Mar. 31, 2017

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Financial Assets And Liabilities Accounted For Fair Value On Recurring Basis

The following table sets forth the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis at March 31, 2017 and December 31, 2016 by level within the fair value hierarchy. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement:

	Fair value		Fair Value Measurements at Reporting Date Using
			Level 1		Level 2		Level 3
March 31, 2017	(in thousands)
Assets
Securities available for sale:
U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations	$	1,486,498	$	—	$	1,486,498	$	—
State and municipal debt securities	487,355		—		487,355		—
U.S. government agency and government-sponsored enterprise securities	352,183		—		352,183		—
U.S. government securities	252		252		—		—
Other securities	5,071		—		5,071		—
Total securities available for sale	$	2,331,359	$	252	$	2,331,107	$	—
Other assets (Interest rate contracts)	$	8,598	$	—	$	8,598	$	—
Liabilities
Other liabilities (Interest rate contracts)	$	8,618	$	—	$	8,618	$	—

	Fair value		Fair Value Measurements at Reporting Date Using
			Level 1		Level 2		Level 3
December 31, 2016	(in thousands)
Assets
Securities available for sale:
U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations	$	1,465,732	$	—	$	1,465,732	$	—
State and municipal debt securities	475,060		—		475,060		—
U.S. government agency and government-sponsored enterprise securities	331,902		—		331,902		—
U.S. government securities	800		800		—		—
Other securities	5,083		—		5,083		—
Total securities available for sale	$	2,278,577	$	800	$	2,277,777	$	—
Other assets (Interest rate contracts)	$	9,012	$	—	$	9,012	$	—
Liabilities
Other liabilities (Interest rate contracts)	$	9,036	$	—	$	9,036	$	—

Financial Assets Accounted For Fair Value On Nonrecurring Basis

The following tables set forth information related to the Company’s assets that were measured using fair value estimates on a nonrecurring basis during the current and prior year quarterly periods:

	Fair value at March 31, 2017		Fair Value Measurements at Reporting Date Using						Losses During the Three Months Ended March 31, 2017
			Level 1		Level 2		Level 3
	(in thousands)
OREO	$	1,260	$	—	$	—	$	1,260	$	193
	$	1,260	$	—	$	—	$	1,260	$	193

	Fair value at March 31, 2016		Fair Value Measurements at Reporting Date Using						Losses During the Three Months Ended March 31, 2016
			Level 1		Level 2		Level 3
	(in thousands)
Impaired loans	$	10,681	$	—	$	—	$	10,681	$	2,676
OREO	2,553		—		—		2,553		137
	$	13,234	$	—	$	—	$	13,234	$	2,813

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 March 31, 2017 and December 31, 2016:

	March 31, 2017
	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
	(in thousands)
Assets
Cash and due from banks	$	169,697	$	169,697	$	169,697	$	—	$	—
Interest-earning deposits with banks	13,124		13,124		13,124		—		—
Securities available for sale	2,331,359		2,331,359		252		2,331,107		—
FHLB stock	10,600		10,600		—		10,600		—
Loans held for sale	3,245		3,245		—		3,245		—
Loans	6,157,115		6,042,895		—		—		6,042,895
FDIC loss-sharing asset	3,239		921		—		—		921
Interest rate contracts	8,598		8,598		—		8,598		—
Liabilities
Deposits	$	8,088,827	$	8,084,550	$	7,699,879	$	384,671	$	—
FHLB advances	15,483		16,110		—		16,110		—
Repurchase agreements	46,914		47,099		—		47,099		—
Interest rate contracts	8,618		8,618		—		8,618		—

	December 31, 2016
	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
	(in thousands)
Assets
Cash and due from banks	$	193,038	$	193,038	$	193,038	$	—	$	—
Interest-earning deposits with banks	31,200		31,200		31,200		—		—
Securities available for sale	2,278,577		2,278,577		800		2,277,777		—
FHLB stock	10,240		10,240		—		10,240		—
Loans held for sale	5,846		5,846		—		5,846		—
Loans	6,143,380		6,040,439		—		—		6,040,439
FDIC loss-sharing asset	3,535		867		—		—		867
Interest rate contracts	9,012		9,012		—		9,012		—
Liabilities
Deposits	$	8,059,415	$	8,055,168	$	7,653,122	$	402,046	$	—
FHLB advances	6,493		7,070		—		7,070		—
Repurchase agreements	80,822		81,131		—		81,131		—
Interest rate contracts	9,036		9,036		—		9,036		—

Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Fair Value Inputs, Assets, Quantitative Information

The range and weighted-average of the significant unobservable inputs used to fair value our Level 3 nonrecurring assets, along with the valuation techniques used, are shown in the following table:

	Fair value at March 31, 2017		Valuation Technique	Unobservable Input	Range (Weighted Average) (1)
	(dollars in thousands)
OREO	$	1,260	Fair Market Value of Collateral	Adjustment to Appraisal Value	N/A (2)
(1) Discount applied to appraisal value.
(2) Quantitative disclosures are not provided for OREO because there were no adjustments made to the appraisal values.

	Fair value at March 31, 2016		Valuation Technique	Unobservable Input	Range (Weighted Average) (1)
	(dollars in thousands)
Impaired loans	$	10,681	Fair Market Value of Collateral	Adjustment to Stated Value	0% - 7% (6%)
OREO	$	2,553	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 OREO because there were no adjustments made to the appraisal values.

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Earnings per Common Share (Tables)

3 Months Ended

Mar. 31, 2017

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Earnings Per Share

The following table sets forth the computation of basic and diluted earnings per share for the three months ended March 31, 2017 and 2016:

	Three Months Ended
	March 31,
	2017		2016
	(in thousands except per share)
Basic EPS:
Net income	$	29,199	$	21,259
Less: Earnings allocated to participating securities:
Preferred shares	3		39
Nonvested restricted shares	397		247
Earnings allocated to common shareholders	$	28,799	$	20,973
Weighted average common shares outstanding	57,388		57,114
Basic earnings per common share	$	0.50	$	0.37
Diluted EPS:
Earnings allocated to common shareholders	$	28,799	$	20,973
Weighted average common shares outstanding	57,388		57,114
Dilutive effect of equity awards	6		11
Weighted average diluted common shares outstanding	57,394		57,125
Diluted earnings per common share	$	0.50	$	0.37
Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive	14		27

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Securities (Securities Available for Sale) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds	$ 0	$ 38,900
Securities available-for-sale, amortized cost	2,349,149		$ 2,299,037
Available-for-sale Debt Securities Gross Unrealized Gain, instant	11,017		10,231
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(28,807)		(30,691)
Securities available for sale	2,331,359		2,278,577
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, amortized cost	1,506,914		1,486,690
Available-for-sale Debt Securities Gross Unrealized Gain, instant	2,400		2,760
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(22,816)		(23,718)
Securities available for sale	1,486,498		1,465,732
State and Municipal Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, amortized cost	484,376		473,914
Available-for-sale Debt Securities Gross Unrealized Gain, instant	7,316		6,343
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(4,337)		(5,197)
Securities available for sale	487,355		475,060
U.S. Government and Government-Sponsored Enterprise Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, amortized cost	352,323		332,348
Available-for-sale Debt Securities Gross Unrealized Gain, instant	1,241		1,065
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(1,381)		(1,511)
Securities available for sale	352,183		331,902
US Government Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, amortized cost	252		801
Available-for-sale Debt Securities Gross Unrealized Gain, instant	0		0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	0		(1)
Securities available for sale	252		800
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	60		63
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(273)		(264)
Securities available for sale	$ 5,071		$ 5,083

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Securities (Schedule of Contractual Maturities of Investment Securities Available for Sale) (Details) $ in Thousands	Mar. 31, 2017 USD ($)
Available-for-sale Securities [Abstract]
Due within one year, Amortized Cost	$ 53,518
Due after one year through five years, Amortized Cost	502,633
Due after five years through ten years, Amortized Cost	731,123
Due after ten years, Amortized Cost	1,056,591
No stated maturity date, Amortized Cost Basis	5,284
Total investment securities available-for-sale, Amortized Cost	2,349,149
Due within one year, Fair Value	53,606
Due after one year through five years, Fair Value	505,398
Due after five years through ten years, Fair Value	724,361
Due after ten years, Fair Value	1,042,923
No stated maturity date, Fair Value	5,071
Total investment securities available-for-sale, Fair Value	$ 2,331,359

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Securities (Carrying Value of Securities Pledged as Collateral) (Details) $ in Thousands	Mar. 31, 2017 USD ($)
Schedule of Available-for-sale Securities [Line Items]
Carrying amount of securities pledged as collateral	$ 409,299
Washington and Oregon State Public Deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Carrying amount of securities pledged as collateral	228,794
Federal Reserve Bank Advances [Member]
Schedule of Available-for-sale Securities [Line Items]
Carrying amount of securities pledged as collateral	54,551
Other Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Carrying amount of securities pledged as collateral	$ 125,954

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Securities (Summary of Gross Unrealized Losses and Fair Value of the Investments with Unrealized Losses) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities Gross Unrealized Gain, instant	$ 11,017	$ 10,231
Less than 12 Months Fair Value	1,398,191	1,461,783
Less than 12 Months Unrealized Losses	(22,701)	(25,415)
12 Months or More Fair Value	161,992	165,173
12 Months or More Unrealized Losses	(6,106)	(5,276)
Total Fair Value	1,560,183	1,626,956
Total Unrealized Losses	(28,807)	(30,691)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	28,807	30,691
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities Gross Unrealized Gain, instant	2,400	2,760
Less than 12 Months Fair Value	1,038,971	1,029,116
Less than 12 Months Unrealized Losses	(17,020)	(18,788)
12 Months or More Fair Value	155,846	159,046
12 Months or More Unrealized Losses	(5,796)	(4,930)
Total Fair Value	1,194,817	1,188,162
Total Unrealized Losses	(22,816)	(23,718)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	22,816	23,718
State and Municipal Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities Gross Unrealized Gain, instant	7,316	6,343
Less than 12 Months Fair Value	162,860	211,342
Less than 12 Months Unrealized Losses	(4,249)	(5,064)
12 Months or More Fair Value	3,412	3,384
12 Months or More Unrealized Losses	(88)	(133)
Total Fair Value	166,272	214,726
Total Unrealized Losses	(4,337)	(5,197)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	4,337	5,197
US Government Corporations and Agencies Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities Gross Unrealized Gain, instant	1,241	1,065
Less than 12 Months Fair Value	193,846	218,811
Less than 12 Months Unrealized Losses	(1,381)	(1,511)
12 Months or More Fair Value	0	0
12 Months or More Unrealized Losses	0	0
Total Fair Value	193,846	218,811
Total Unrealized Losses	(1,381)	(1,511)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	1,381	1,511
US Government Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities Gross Unrealized Gain, instant	0	0
Less than 12 Months Fair Value	251	251
Less than 12 Months Unrealized Losses	0	(1)
12 Months or More Fair Value	0	0
12 Months or More Unrealized Losses	0	0
Total Fair Value	251	251
Total Unrealized Losses	0	(1)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	0	1
Other Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities Gross Unrealized Gain, instant	60	63
Less than 12 Months Fair Value	2,263	2,263
Less than 12 Months Unrealized Losses	(51)	(51)
12 Months or More Fair Value	2,734	2,743
12 Months or More Unrealized Losses	(222)	(213)
Total Fair Value	4,997	5,006
Total Unrealized Losses	(273)	(264)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	$ 273	$ 264

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Securities (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2017 USD ($) security	Mar. 31, 2016 USD ($)
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds | $	$ 0.0	$ 38.9
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	198
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year	52
Municipal Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	142
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year	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	20
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year	0
US Government Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Number Of Securities In Continuous Loss Position For Twelve Months or More	0
Number Of Securities In Unrealized Loss Position	1
Other Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	2
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year	1

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Securities Securities (Summary of Gross Realized Gains and Gross Realized Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Available-for-sale Securities, Gross Realized Gains	$ 0	$ 373
Available-for-sale Securities, Gross Realized Losses	0	0
Investment securities gains, net	$ 0	$ 373

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Loans (Narrative) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) contract	Dec. 31, 2016 USD ($)
Financing Receivable, Recorded Investment [Line Items]
Loans to related parties	$ 10,100
Loans and Leases Receivable, Related Parties, Additions	75
Repayments on related party loans	$ 96
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	$ 2,280,000	$ 2,290,000
Federal Reserve Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	$ 50,000	$ 54,200

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Loans (Analysis of Loan Portfolio by Major Types of Loans) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]
Less: unearned income on loans	$ (32,212)	$ (33,718)
Recorded Investment	6,228,136	6,213,423
Allowance for loan losses	(71,021)	(70,043)	$ (69,264)	$ (68,172)
Loans, net	6,157,115	6,143,380
Loans held for sale	3,245	5,846
Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Less: unearned income on loans	(32,212)	(33,718)
Recorded Investment	6,089,232	6,067,763
Allowance for loan losses	(61,626)	(59,528)
Loans, net	6,027,606	6,008,235
Loans held for sale	3,245	5,846
Loans and Leases Receivable, Gross	6,089,232	6,067,763
Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Less: unearned income on loans	0	0
Recorded Investment	138,904	145,660
Allowance for loan losses	(9,395)	(10,515)
Loans, net	129,509	135,145
Loans held for sale	0	0
Loans and Leases Receivable, Gross	148,883	157,251
Acquisition Accounting Valuation Discount on Covered Loans	9,979	11,591
Commercial and Multifamily Residential Construction [Domain] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	1,089	1,726
One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Consumer, Mortgage	187,550	188,193
Loans and Leases Receivable, Gross, Consumer, Construction	115,698	122,719
Allowance for loan losses	(645)	(599)	(654)	(916)
One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Consumer, Mortgage	172,581	170,331
Loans and Leases Receivable, Gross, Consumer, Construction	115,219	121,887
Loans and Leases Receivable, Gross	170,199	167,932
One-to-Four Family Residential [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Consumer, Mortgage	14,969	17,862
Loans and Leases Receivable, Gross, Consumer, Construction	479	832
Loans and Leases Receivable, Gross	17,608	20,643
Commercial and Multifamily Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Gross, Commercial, Mortgage	2,871,960	2,809,061
Loans Receivable, Gross, Commercial, Construction	173,884	210,683
Commercial and Multifamily Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Gross, Commercial, Mortgage	2,783,433	2,719,830
Loans Receivable, Gross, Commercial, Construction	172,895	209,118
Commercial and Multifamily Residential [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Gross, Commercial, Mortgage	88,527	89,231
Loans Receivable, Gross, Commercial, Construction	989	1,565
Loans and Leases Receivable, Gross	92,930	94,795
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Gross, Commercial and Industrial	2,578,294	2,571,239
Commercial Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Gross, Commercial and Industrial	2,559,247	2,551,054
Commercial Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Gross, Commercial and Industrial	19,047	20,185
Loans and Leases Receivable, Gross	20,292	21,606
Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Real Estate Mortgage	3,059,510	2,997,254
Real Estate Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Real Estate Mortgage	2,956,014	2,890,161
Real Estate Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Real Estate Mortgage	103,496	107,093
Loans and Leases Receivable, Gross	110,538	115,438
One-to-Four Family Residential Construction [Domain] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	479	832
Real Estate Construction Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Real Estate Construction	289,582	333,402
Real Estate Construction Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Real Estate Construction	288,114	331,005
Real Estate Construction Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Real Estate Construction	1,468	2,397
Loans and Leases Receivable, Gross	1,568	2,558
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Consumer	332,962	345,246
Allowance for loan losses	(3,360)	(3,534)	$ (3,368)	$ (3,531)
Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Consumer	318,069	329,261
Loans and Leases Receivable, Gross	314,235	324,522
Consumer Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Consumer	14,893	15,985
Loans and Leases Receivable, Gross	$ 16,485	$ 17,649

XML

Loans (Analysis of Nonaccrual Loans) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	$ 25,547	$ 27,756
Unpaid Principal Balance Nonaccrual Loans	42,528	42,289
Secured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	10,659	11,524
Unpaid Principal Balance Nonaccrual Loans	21,144	21,503
Unsecured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	189	31
Unpaid Principal Balance Nonaccrual Loans	457	303
One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	450	568
Unpaid Principal Balance Nonaccrual Loans	1,703	1,302
Commercial Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	2,729	934
Unpaid Principal Balance Nonaccrual Loans	2,726	922
Income Property Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	3,290	4,005
Unpaid Principal Balance Nonaccrual Loans	3,561	4,247
Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	4,218	6,248
Unpaid Principal Balance Nonaccrual Loans	8,544	9,030
Land And Acquisition [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	0	14
Unpaid Principal Balance Nonaccrual Loans	0	102
Residential Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	213	549
Unpaid Principal Balance Nonaccrual Loans	213	549
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	3,799	3,883
Unpaid Principal Balance Nonaccrual Loans	$ 4,180	$ 4,331

XML

Loans (Analysis of the Aged Loan Portfolio) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	$ 25,547	$ 27,756
Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	6,053,390	6,031,078
Past Due Loans	10,295	8,929
Nonaccrual Loans	25,547	27,756
Loans Receivable, Net	6,089,232	6,067,763
Secured Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	10,659	11,524
Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	2,447,180	2,439,250
Past Due Loans	6,621	816
Nonaccrual Loans	10,659	11,524
Loans Receivable, Net	2,464,460	2,451,590
Unsecured Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	189	31
Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	90,245	94,118
Past Due Loans	39	588
Nonaccrual Loans	189	31
Loans Receivable, Net	90,473	94,737
One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	450	568
One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	168,634	164,416
Past Due Loans	1,115	2,948
Nonaccrual Loans	450	568
Loans Receivable, Net	170,199	167,932
Commercial Land [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	2,729	934
Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	280,562	269,816
Past Due Loans	0	64
Nonaccrual Loans	2,729	934
Loans Receivable, Net	283,291	270,814
Income Property Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	3,290	4,005
Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	1,366,062	1,365,150
Past Due Loans	723	591
Nonaccrual Loans	3,290	4,005
Loans Receivable, Net	1,370,075	1,369,746
Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	4,218	6,248
Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	1,107,061	1,052,078
Past Due Loans	45	1,652
Nonaccrual Loans	4,218	6,248
Loans Receivable, Net	1,111,324	1,059,978
Land And Acquisition [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	0	14
Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	6,770	11,542
Past Due Loans	29	0
Nonaccrual Loans	0	14
Loans Receivable, Net	6,799	11,556
Residential Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	213	549
Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	107,382	109,080
Past Due Loans	189	0
Nonaccrual Loans	213	549
Loans Receivable, Net	107,784	109,629
Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	106,227	103,779
Past Due Loans	0	0
Nonaccrual Loans	0	0
Loans Receivable, Net	106,227	103,779
Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	64,365	103,480
Past Due Loans	0	0
Nonaccrual Loans	0	0
Loans Receivable, Net	64,365	103,480
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	3,799	3,883
Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	308,902	318,369
Past Due Loans	1,534	2,270
Nonaccrual Loans	3,799	3,883
Loans Receivable, Net	314,235	324,522
Financing Receivables, 60 to 89 Days Past Due [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	1,021	1,157
Financing Receivables, 60 to 89 Days Past Due [Member] | Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	204	10
Financing Receivables, 60 to 89 Days Past Due [Member] | Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	5	301
Financing Receivables, 60 to 89 Days Past Due [Member] | One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	500
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	140	111
Financing Receivables, 60 to 89 Days Past Due [Member] | Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	45	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	627	235
Financing Receivables, 30 to 59 Days Past Due [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	9,274	7,772
Financing Receivables, 30 to 59 Days Past Due [Member] | Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	6,417	806
Financing Receivables, 30 to 59 Days Past Due [Member] | Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	34	287
Financing Receivables, 30 to 59 Days Past Due [Member] | One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	1,115	2,448
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	64
Financing Receivables, 30 to 59 Days Past Due [Member] | Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	583	480
Financing Receivables, 30 to 59 Days Past Due [Member] | Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	1,652
Financing Receivables, 30 to 59 Days Past Due [Member] | Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	29	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	189	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	907	2,035
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	$ 0	$ 0

XML

Loans (Analysis of Impaired Loans) (Details) - Loans, Excluding Purchased Credit Impaired Loans [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	$ 6,065,903		$ 6,042,304
Recorded Investment of Loans Individually Measured for Specific Impairment	23,329		25,459
Recorded Investment	17,449		17,592
Unpaid Principal Balance	28,046		27,228
Related Allowance	94		761
Average Recorded Investment Impaired Loans	24,394	$ 22,448
Interest Recognized on Impaired Loans	49	36
Secured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	2,456,672		2,442,772
Recorded Investment of Loans Individually Measured for Specific Impairment	7,788		8,818
Recorded Investment	0		2,414
Unpaid Principal Balance	0		2,484
Related Allowance	0		664
Average Recorded Investment Impaired Loans	8,303	12,103
Interest Recognized on Impaired Loans	19	17
Unsecured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	90,473		94,737
Recorded Investment of Loans Individually Measured for Specific Impairment	0		0
Recorded Investment	0		0
Unpaid Principal Balance	0		0
Related Allowance	0		0
One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	169,686		167,403
Recorded Investment of Loans Individually Measured for Specific Impairment	513		529
Recorded Investment	424		435
Unpaid Principal Balance	688		693
Related Allowance	11		12
Average Recorded Investment Impaired Loans	521	975
Interest Recognized on Impaired Loans	2	6
Commercial Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	280,992		270,106
Recorded Investment of Loans Individually Measured for Specific Impairment	2,299		708
Recorded Investment	0		0
Unpaid Principal Balance	0		0
Related Allowance	0		0
Average Recorded Investment Impaired Loans	1,504	0
Interest Recognized on Impaired Loans	0	0
Income Property Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	1,366,381		1,365,321
Recorded Investment of Loans Individually Measured for Specific Impairment	3,694		4,425
Recorded Investment	533		540
Unpaid Principal Balance	537		544
Related Allowance	26		27
Average Recorded Investment Impaired Loans	4,059	2,080
Interest Recognized on Impaired Loans	1	3
Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	1,107,814		1,054,564
Recorded Investment of Loans Individually Measured for Specific Impairment	3,510		5,414
Recorded Investment	0		0
Unpaid Principal Balance	0		0
Related Allowance	0		0
Average Recorded Investment Impaired Loans	4,462	5,516
Interest Recognized on Impaired Loans	0	7
Land And Acquisition [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	6,799		11,542
Recorded Investment of Loans Individually Measured for Specific Impairment	0		14
Recorded Investment	0		14
Unpaid Principal Balance	0		102
Related Allowance	0		1
Average Recorded Investment Impaired Loans	7	388
Interest Recognized on Impaired Loans	0	1
Residential Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	107,784		109,293
Recorded Investment of Loans Individually Measured for Specific Impairment	0		336
Recorded Investment	0		0
Unpaid Principal Balance	0		0
Related Allowance	0		0
Average Recorded Investment Impaired Loans	168	562
Interest Recognized on Impaired Loans	0	0
Income Property Multifamily Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	106,227		103,779
Recorded Investment of Loans Individually Measured for Specific Impairment	0		0
Recorded Investment	0		0
Unpaid Principal Balance	0		0
Related Allowance	0		0
Owner Occupied Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	64,365		103,480
Recorded Investment of Loans Individually Measured for Specific Impairment	0		0
Recorded Investment	0		0
Unpaid Principal Balance	0		0
Related Allowance	0		0
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	308,710		319,307
Recorded Investment of Loans Individually Measured for Specific Impairment	5,525		5,215
Recorded Investment	4,923		4,464
Unpaid Principal Balance	5,013		4,558
Related Allowance	57		57
Average Recorded Investment Impaired Loans	5,370	824
Interest Recognized on Impaired Loans	27	$ 2
Impaired Loans With Recorded Allowance [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	5,880		7,867
Unpaid Principal Balance	6,238		8,381
Impaired Loans Without Recorded Allowance [Member] | Secured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	7,788		6,404
Unpaid Principal Balance	14,806		12,831
Impaired Loans Without Recorded Allowance [Member] | Unsecured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	0		0
Unpaid Principal Balance	0		0
Impaired Loans Without Recorded Allowance [Member] | One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	89		94
Unpaid Principal Balance	287		291
Impaired Loans Without Recorded Allowance [Member] | Commercial Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	2,299		708
Unpaid Principal Balance	2,288		687
Impaired Loans Without Recorded Allowance [Member] | Income Property Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	3,161		3,885
Unpaid Principal Balance	3,656		4,148
Impaired Loans Without Recorded Allowance [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	3,510		5,414
Unpaid Principal Balance	6,327		8,102
Impaired Loans Without Recorded Allowance [Member] | Land And Acquisition [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	0		0
Unpaid Principal Balance	0		0
Impaired Loans Without Recorded Allowance [Member] | Residential Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	0		336
Unpaid Principal Balance	0		336
Impaired Loans Without Recorded Allowance [Member] | Income Property Multifamily Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	0		0
Unpaid Principal Balance	0		0
Impaired Loans Without Recorded Allowance [Member] | Owner Occupied Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	0		0
Unpaid Principal Balance	0		0
Impaired Loans Without Recorded Allowance [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	602		751
Unpaid Principal Balance	$ 682		$ 833

XML

Loans Loans (Analysis of Troubled Debt Restructurings) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) Modifications	Mar. 31, 2016 USD ($) Modifications	Dec. 31, 2016 USD ($)
Financing Receivable, Modifications [Line Items]
Financing Receivable Modifications Additional Commitment To Lend	$ 451		$ 508
Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Modifications	13	8
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 1,902	$ 2,117
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,902	$ 2,117
Loans, Excluding Purchased Credit Impaired Loans [Member] | Secured Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Modifications	3	3
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 356	$ 1,370
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 356	$ 1,370
Loans, Excluding Purchased Credit Impaired Loans [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Modifications	0	1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 0	$ 250
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 250
Loans, Excluding Purchased Credit Impaired Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Modifications	10	4
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 1,546	$ 497
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,546	$ 497

XML

Loans Loans (Analysis of Purchased Credit Impaired Loans - Accretable Yield Rollforward) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
Loans, Analysis of Purchased Credit Impaired Loans, Accretable Yield Rollforward [Abstract]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield	$ 38,444	$ 56,607	$ 45,191	$ 58,981
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion	4,182	4,229
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Disposals of Loans	158	(94)
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference	$ (2,407)	$ 1,761

XML

Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision for loan and lease losses	$ 2,775	$ 5,254

XML

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
	Mar. 31, 2017	Mar. 31, 2016
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 70,043	$ 68,172
Charged-offs	(3,815)	(6,905)
Recoveries	2,018	2,743
Provision for loan and lease losses	2,775	5,254
Ending balance	71,021	69,264
Specific Reserve	94	2,515
General Allocation	70,927	66,749
Secured Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	36,050	32,321
Charged-offs	(1,109)	(3,770)
Recoveries	297	611
Provision for loan and lease losses	434	2,952
Ending balance	35,672	32,114
Specific Reserve	0	2,500
General Allocation	35,672	29,614
Unsecured Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	960	1,299
Charged-offs	(18)	(3)
Recoveries	68	51
Provision for loan and lease losses	178	(47)
Ending balance	1,188	1,300
Specific Reserve	0	0
General Allocation	1,188	1,300
One-to-Four Family Residential [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	599	916
Charged-offs	(307)	0
Recoveries	117	41
Provision for loan and lease losses	236	(303)
Ending balance	645	654
Specific Reserve	11	0
General Allocation	634	654
Commercial Land [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,797	1,178
Charged-offs	0	0
Recoveries	0	0
Provision for loan and lease losses	491	84
Ending balance	2,288	1,262
Specific Reserve	0	0
General Allocation	2,288	1,262
Income Property Multifamily [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	7,342	6,616
Charged-offs	0	0
Recoveries	35	61
Provision for loan and lease losses	(574)	725
Ending balance	6,803	7,402
Specific Reserve	26	0
General Allocation	6,777	7,402
Owner Occupied [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	6,439	5,550
Charged-offs	0	0
Recoveries	43	8
Provision for loan and lease losses	52	528
Ending balance	6,534	6,086
Specific Reserve	0	0
General Allocation	6,534	6,086
Land And Acquisition [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	316	339
Charged-offs	(14)	0
Recoveries	20	51
Provision for loan and lease losses	187	250
Ending balance	509	640
Specific Reserve	0	0
General Allocation	509	640
Residential Construction [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	669	733
Charged-offs	0	0
Recoveries	9	203
Provision for loan and lease losses	431	513
Ending balance	1,109	1,449
Specific Reserve	0	0
General Allocation	1,109	1,449
Income Property Multifamily Construction [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	404	388
Charged-offs	0	0
Recoveries	0	1
Provision for loan and lease losses	378	326
Ending balance	782	715
Specific Reserve	0	0
General Allocation	782	715
Owner Occupied Construction [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,192	1,006
Charged-offs	0	0
Recoveries	0	0
Provision for loan and lease losses	576	204
Ending balance	1,768	1,210
Specific Reserve	0	0
General Allocation	1,768	1,210
Consumer Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	3,534	3,531
Charged-offs	(428)	(266)
Recoveries	285	165
Provision for loan and lease losses	(31)	(62)
Ending balance	3,360	3,368
Specific Reserve	57	15
General Allocation	3,303	3,353
Purchased Credit Impaired Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	10,515	13,726
Charged-offs	(1,939)	(2,866)
Recoveries	1,144	1,551
Provision for loan and lease losses	(325)	653
Ending balance	9,395	13,064
Specific Reserve	0	0
General Allocation	9,395	13,064
Unallocated Financing Receivables [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	226	569
Charged-offs	0	0
Recoveries	0	0
Provision for loan and lease losses	742	(569)
Ending balance	968	0
Specific Reserve	0	0
General Allocation	$ 968	$ 0

XML

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
	Mar. 31, 2017	Mar. 31, 2016
Allowance For Loan And Lease Losses And Unfunded Loan Commitments And Letters Of Credit
Beginning balance	$ 2,705	$ 2,930
Allowance for Loan and Lease Losses, Net Changes In Unfunded Commitments and Letters Of Credit Allowance	850	0
Ending balance	$ 3,555	$ 2,930

XML

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	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	$ 71,021	$ 70,043	$ 69,264	$ 68,172
Loans, net	6,157,115	6,143,380
Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	6,089,232	6,067,763
Less: allowance for loan and lease losses	61,626	59,528
Loans, net	6,027,606	6,008,235
Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	148,883	157,251
Acquisition Accounting Valuation Discount on Purchased Credit Impaired Loans	9,979	11,591
Less: allowance for loan and lease losses	9,395	10,515
Loans, net	129,509	135,145
Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	5,838,265	5,820,954
Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	143,227	150,523
Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	56,311	94,867
Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	2,121	92
Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	194,656	151,942
Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	3,535	6,636
Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Secured Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	35,672	36,050	32,114	32,321
Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	2,464,460	2,451,590
Secured Loans [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	19,554	20,870
Secured Loans [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	2,297,687	2,289,307
Secured Loans [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	18,443	18,824
Secured Loans [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	40,267	65,846
Secured Loans [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	89	92
Secured Loans [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	126,506	96,437
Secured Loans [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,022	1,954
Secured Loans [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Secured Loans [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Secured Loans [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Secured Loans [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Unsecured Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	1,188	960	1,300	1,299
Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	90,473	94,737
Unsecured Loans [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	738	736
Unsecured Loans [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	89,171	93,721
Unsecured Loans [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	738	736
Unsecured Loans [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	850	800
Unsecured Loans [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Unsecured Loans [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	452	216
Unsecured Loans [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Unsecured Loans [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Unsecured Loans [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Unsecured Loans [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Unsecured Loans [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
One-to-Four Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	645	599	654	916
One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	170,199	167,932
One-to-Four Family Residential [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	17,608	20,643
One-to-Four Family Residential [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	169,158	164,797
One-to-Four Family Residential [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	16,571	19,293
One-to-Four Family Residential [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	395
One-to-Four Family Residential [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
One-to-Four Family Residential [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,041	2,740
One-to-Four Family Residential [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,037	1,350
One-to-Four Family Residential [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
One-to-Four Family Residential [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
One-to-Four Family Residential [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
One-to-Four Family Residential [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Commercial Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	2,288	1,797	1,262	1,178
Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	283,291	270,814
Commercial Land [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	10,735	7,546
Commercial Land [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	270,840	263,195
Commercial Land [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	8,703	7,333
Commercial Land [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	5,199	3,228
Commercial Land [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	2,032	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	7,252	4,391
Commercial Land [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	213
Commercial Land [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Commercial Land [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Commercial Land [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Commercial Land [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Income Property Multifamily [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	6,803	7,342	7,402	6,616
Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,370,075	1,369,746
Income Property Multifamily [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	27,995	32,720
Income Property Multifamily [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,345,290	1,341,978
Income Property Multifamily [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	27,857	31,042
Income Property Multifamily [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	6,321	17,902
Income Property Multifamily [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Income Property Multifamily [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	18,464	9,866
Income Property Multifamily [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	138	1,678
Income Property Multifamily [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Income Property Multifamily [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Income Property Multifamily [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Income Property Multifamily [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	6,534	6,439	6,086	5,550
Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,111,324	1,059,978
Owner Occupied [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	54,200	54,529
Owner Occupied [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,077,648	1,027,019
Owner Occupied [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	53,380	53,623
Owner Occupied [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	3,673	6,608
Owner Occupied [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Owner Occupied [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	30,003	26,351
Owner Occupied [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	820	906
Owner Occupied [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Owner Occupied [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Owner Occupied [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Owner Occupied [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Land And Acquisition [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	509	316	640	339
Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	6,799	11,556
Land And Acquisition [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	479	832
Land And Acquisition [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	6,799	11,541
Land And Acquisition [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	401	744
Land And Acquisition [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Land And Acquisition [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Land And Acquisition [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	15
Land And Acquisition [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	78	88
Land And Acquisition [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Land And Acquisition [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Land And Acquisition [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Land And Acquisition [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Residential Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	1,109	669	1,449	733
Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	107,784	109,629
Residential Construction [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] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	107,571	108,941
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	0
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	213	688
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	0
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	782	404	715	388
Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	106,227	103,779
Income Property Multifamily Construction [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	799	1,217
Income Property Multifamily Construction [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	106,227	103,779
Income Property Multifamily Construction [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	799	1,217
Income Property Multifamily Construction [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Income Property Multifamily Construction [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Income Property Multifamily Construction [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Income Property Multifamily Construction [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Income Property Multifamily Construction [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Income Property Multifamily Construction [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Income Property Multifamily Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Income Property Multifamily Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Owner Occupied Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	1,768	1,192	1,210	1,006
Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	64,365	103,480
Owner Occupied Construction [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	290	509
Owner Occupied Construction [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	60,315	98,948
Owner Occupied Construction [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	290	509
Owner Occupied Construction [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	88
Owner Occupied Construction [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Owner Occupied Construction [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	4,050	4,444
Owner Occupied Construction [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Owner Occupied Construction [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Owner Occupied Construction [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Owner Occupied Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Owner Occupied Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	3,360	3,534	$ 3,368	$ 3,531
Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	314,235	324,522
Consumer Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	16,485	17,649
Consumer Portfolio Segment [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	307,559	317,728
Consumer Portfolio Segment [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	16,045	17,202
Consumer Portfolio Segment [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1	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	6,675	6,794
Consumer Portfolio Segment [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	440	447
Consumer Portfolio Segment [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Consumer Portfolio Segment [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Consumer Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Consumer Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	$ 0	$ 0

XML

Other Real Estate Owned (Summary of Other Real Estate Owned) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Other Real Estate Owned [Line Items]
Balance, beginning of period	$ 5,998	$ 13,738
Transfers in	0	105
Valuation adjustments	(193)	(137)
Proceeds from Sale of OREO Property	1,275	1,326
Gain (loss) on sale of OREO, net	(11)	47
Total OREO, end of period	4,519	$ 12,427
Mortgage Loans in Process of Foreclosure, Amount	675
One-to-Four Family Residential [Member]
Other Real Estate Owned [Line Items]
Total OREO, end of period	$ 379

XML

Covered Assets and FDIC Loss-sharing Asset (Narrative) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($)
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Amount of Estimated Clawback Liability	$ 5,380
Payment Of Clawback If Losses Less Than Stated Levels, Period After Acquisition	10 years 45 days
Federal deposit insurance corporation loss-sharing indemnified assets	$ 2,500
Federal deposit insurance corporation loss-sharing indemnified assets receivable	$ 773
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%

XML

Covered Assets and FDIC Loss-sharing Asset (FDIC Loss-sharing Asset) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Balance at beginning of period	$ 3,535	$ 6,568
Cash paid to the FDIC, net	184	353
FDIC reimbursable losses, net	(206)	136
Amortization, net	(315)	(1,332)
Loan impairment	40	147
Sale of other real estate	7	144
Valuation adjustments of other real estate owned	0	18
Other	6	80
Balance at end of period	3,239	$ 5,954
Amount of Estimated Clawback Liability	5,380
Non-Single Family Covered Assets	73,991
Single Family Covered Assets	26,445
Columbia River Bank [Member]
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Balance at end of period	158
Amount of Estimated Clawback Liability	3,362
Non-Single Family Covered Assets	50,590
Single Family Covered Assets	5,721
American Marine Bank [Member]
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Balance at end of period	1,676
Amount of Estimated Clawback Liability	1,275
Non-Single Family Covered Assets	8,885
Single Family Covered Assets	15,319
Summit Bank [Member]
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Balance at end of period	1,313
Amount of Estimated Clawback Liability	0
Non-Single Family Covered Assets	4,788
Single Family Covered Assets	4,182
First Heritage Bank [Member]
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Balance at end of period	92
Amount of Estimated Clawback Liability	743
Non-Single Family Covered Assets	9,728
Single Family Covered Assets	$ 1,223

XML

Goodwill and Intangible Assets (Schedule of Goodwill and Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
Goodwill and Intangible Assets [Roll Forward]
Total goodwill, beginning of period	$ 382,762
Total goodwill, end of period	382,762	$ 382,762
CDI current period amortization	(1,349)	(1,583)
Indefinite-Lived Intangible Assets (Excluding Goodwill)	919	919
Other intangible assets, net	16,282	21,994	$ 17,631
Total goodwill and intangible assets, end of period	$ 399,044	404,756
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
Accumulated amortization at beginning of period			$ (41,886)	$ (35,940)
Core deposit intangible, net, beginning of period	$ 16,712	22,658
CDI current period amortization	(1,349)	(1,583)
Total core deposit intangible, end of period	$ 15,363	$ 21,075

XML

Goodwill and Intangible Assets (Estimated Future Amortization Expense of Core Deposit Intangibles) (Details) $ in Thousands	Mar. 31, 2017 USD ($)
Future Amortization Expense For Core Deposit Intangibles
2016	$ 3,564
2017	3,855
2018	2,951
2019	2,048
2020	$ 1,440

XML

Derivatives and Balance Sheet Offsetting (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Derivative [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax	$ 4	$ (8)
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement	46,914
Secured Borrowings, Gross, Difference, Amount	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	46,914
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	21,914
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
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
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
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member]
Derivative [Line Items]
Derivative, Notional Amount	336,100		$ 309,300
Not Designated as Hedging Instrument [Member] | Other Assets [Member] | Interest Rate Contracts [Member]
Derivative [Line Items]
Fair value of asset derivative instruments	8,598		9,012
Not Designated as Hedging Instrument [Member] | Other Liabilities [Member] | Interest Rate Contracts [Member]
Derivative [Line Items]
Fair value of liability derivative instruments	$ 8,618		$ 9,036

XML

Derivatives and Balance Sheet Offsetting Balance Sheet Offsetting (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Balance Sheet Offsetting [Line Items]
Repurchase agreements, amounts offset in balance sheet	$ 0	$ 0
Repurchase agreements, net amount presented in statement of financial position	46,914	80,822
Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Securities	(46,914)	(80,822)
Securities sold under agreements to repurchase, amount not offset	0	0
Interest Rate Contracts [Member]
Balance Sheet Offsetting [Line Items]
Derivative Assets, Gross Amounts Offset in the Balance Sheets	0	0
Derivative Asset	8,598	9,012
Derivative, Collateral, Obligation to Return Securities	0	0
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	8,598	9,012
Derivative Liability, Gross Amounts Offset in Balance Sheets	0	0
Derivative Liability	8,618	9,036
Derivative, Collateral, Right to Reclaim Securities	(8,618)	(9,036)
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	0	0
Available-for-sale Securities [Member]
Balance Sheet Offsetting [Line Items]
Securities Sold under Agreements to Repurchase, Gross	46,914	80,822
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member] | Other Assets [Member]
Balance Sheet Offsetting [Line Items]
Fair value of asset derivative instruments	8,598	9,012
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member] | Other Liabilities [Member]
Balance Sheet Offsetting [Line Items]
Fair value of liability derivative instruments	$ 8,618	$ 9,036

XML

Commitments and Contingent Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Aug. 24, 2016
Other Commitments [Line Items]
Sale Leaseback Transaction, Monthly Rental Payments	$ 12
Sale Leaseback Transaction, Deferred Gain, Gross			$ 742
Sale Leaseback Transaction, Deferred Gain, Net	696
Commitments to Extend Credit [Member]
Other Commitments [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability	2,230,000	$ 2,170,000
Standby Letters of Credit [Member]
Other Commitments [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability	47,600	49,700
Commercial Letter of Credit and other off-balance sheet liabilities [Member]
Other Commitments [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability	$ 3,000	$ 3,400

XML

Shareholders' Equity (Details) - $ / shares	Apr. 27, 2017	Jan. 26, 2017
Subsequent Event [Line Items]
Declared quarterly cash dividend		$ 0.22
Subsequent Event [Member]
Subsequent Event [Line Items]
Declared quarterly cash dividend	$ 0.22

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Accumulated Other Comprehensive Income (Changes in AOCI by Component) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	[1]	$ (18,999)	$ (6,295)
Other comprehensive income before reclassifications	[1]	6,306	18,770
Amounts reclassified from accumulated other comprehensive income	[1]	87	(132)
Net current-period other comprehensive income	[1]	6,393	18,638
Ending balance	[1]	(12,606)	12,343
Unrealized Gains and Losses on Available-for-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	[1]	(12,704)	386
Other comprehensive income before reclassifications	[1]	1,702	18,770
Amounts reclassified from accumulated other comprehensive income	[1]	0	(238)
Net current-period other comprehensive income	[1]	1,702	18,532
Ending balance	[1]	(11,002)	18,918
Unrealized Gains and Losses on Pension Plan Liability [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	[1]	(6,295)	(6,681)
Other comprehensive income before reclassifications	[1]	4,604	0
Amounts reclassified from accumulated other comprehensive income	[1]	87	106
Net current-period other comprehensive income	[1]	4,691	106
Ending balance	[1]	$ (1,604)	$ (6,575)

[1] All amounts are net of tax. Amounts in parenthesis indicate debits.

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Accumulated Other Comprehensive Income (Reclassification out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment securities gains, net	$ 0	$ 373
Compensation and employee benefits	40,825	36,319
Total before tax	39,773	30,488
Income tax provision	(10,574)	(9,229)
Net income	29,199	21,259
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains and Losses on Available-for-Sale Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment securities gains, net	0	373
Total before tax	0	373
Income tax provision	0	(135)
Net income	0	238
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	(136)	(167)
Total before tax	(136)	(167)
Income tax provision	49	61
Net income	$ (87)	$ (106)

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Fair Value Accounting and Measurement (Financial Assets And Liabilities Accounted for Fair Value On Recurring Basis) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 2,331,359	$ 2,278,577
Fair Value, Level 2 to level 1 Transfers, Amount	0
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 2,331,359	2,278,577
Other assets (Interest rate contracts)	8,598	9,012
Other liabilities (Interest rate contracts)	8,618	9,036
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	252	800
Other assets (Interest rate contracts)	0	0
Other liabilities (Interest rate contracts)	0	0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	2,331,107	2,277,777
Other assets (Interest rate contracts)	8,598	9,012
Other liabilities (Interest rate contracts)	8,618	9,036
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Other assets (Interest rate contracts)	0	0
Other liabilities (Interest rate contracts)	0	0
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	1,486,498	1,465,732
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	1,486,498	1,465,732
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
State and Municipal Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	487,355	475,060
State and Municipal Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
State and Municipal Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	487,355	475,060
State and Municipal Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
U.S. Government Agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	352,183	331,902
U.S. Government Agency [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
U.S. Government Agency [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	352,183	331,902
U.S. Government Agency [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
US Government Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	252	800
US Government Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	252	800
US Government Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
US Government Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Other Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	5,071	5,083
Other Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Other Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	5,071	5,083
Other Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 0	$ 0

XML

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
	Mar. 31, 2017	Mar. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans		$ 10,681
Fair Value, Option, Changes in Fair Value, Gain (Loss)	$ 193	2,813
OREO	1,260	2,553
Assets, Fair Value Disclosure	1,260	13,234
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans		0
OREO	0	0
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans		0
OREO	0	0
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans		10,681
OREO	1,260	2,553
Assets, Fair Value Disclosure	1,260	13,234
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)		2,676
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)	$ 193	$ 137

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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
		Mar. 31, 2016	Mar. 31, 2017
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans		$ 10,681
OREO		2,553	$ 1,260
Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans		10,681
OREO		$ 2,553	$ 1,260
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%
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]	7.00%
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]	6.00%

[1] Discount applied to appraisal value, letter of intent to purchase, or stated value (in the case of accounts receivable, inventory and equipment).

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Fair Value Accounting and Measurement (Carrying Amounts and Estimated Fair Values of Selected Financial Instruments) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Assets
Interest-earning deposits with banks	$ 13,124	$ 31,200
Securities available for sale	2,331,359	2,278,577
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Assets
Cash and due from banks	169,697	193,038
Interest-earning deposits with banks	13,124	31,200
Securities available for sale	2,331,359	2,278,577
FHLB stock	10,600	10,240
Loans held for sale	3,245	5,846
Loans	6,157,115	6,143,380
FDIC loss-sharing asset	3,239	3,535
Interest rate contracts	8,598	9,012
Liabilities
Deposits	8,088,827	8,059,415
FHLB Advances	15,483	6,493
Repurchase agreements	46,914	80,822
Interest rate contracts	8,618	9,036
Estimate of Fair Value, Fair Value Disclosure [Member]
Assets
Cash and due from banks	169,697	193,038
Interest-earning deposits with banks	13,124	31,200
Securities available for sale	2,331,359	2,278,577
FHLB stock	10,600	10,240
Loans held for sale	3,245	5,846
Loans	6,042,895	6,040,439
FDIC loss-sharing asset	921	867
Interest rate contracts	8,598	9,012
Liabilities
Deposits	8,084,550	8,055,168
FHLB Advances	16,110	7,070
Repurchase agreements	47,099	81,131
Interest rate contracts	8,618	9,036
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Assets
Cash and due from banks	169,697	193,038
Interest-earning deposits with banks	13,124	31,200
Securities available for sale	252	800
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	7,699,879	7,653,122
FHLB Advances	0	0
Repurchase agreements	0	0
Interest rate contracts	0	0
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Assets
Cash and due from banks	0	0
Interest-earning deposits with banks	0	0
Securities available for sale	2,331,107	2,277,777
FHLB stock	10,600	10,240
Loans held for sale	3,245	5,846
Loans	0	0
FDIC loss-sharing asset	0	0
Interest rate contracts	8,598	9,012
Liabilities
Deposits	384,671	402,046
FHLB Advances	16,110	7,070
Repurchase agreements	47,099	81,131
Interest rate contracts	8,618	9,036
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Assets
Cash and due from banks	0	0
Interest-earning deposits with banks	0	0
Securities available for sale	0	0
FHLB stock	0	0
Loans held for sale	0	0
Loans	6,042,895	6,040,439
FDIC loss-sharing asset	921	867
Interest rate contracts	0	0
Liabilities
Deposits	0	0
FHLB Advances	0	0
Repurchase agreements	0	0
Interest rate contracts	$ 0	$ 0

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Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net Income	$ 29,199	$ 21,259
Earnings allocated to participating securities - preferred shares	3	39
Earnings allocated to participating securities - nonvested restricted shares	397	247
Earnings allocated to common shareholders, Basic	$ 28,799	$ 20,973
Weighted average common shares outstanding	57,388	57,114
Basic earnings per common share	$ 0.50	$ 0.37
Earnings allocated to common shareholders, Diluted	$ 28,799	$ 20,973
Dilutive effect of equity awards and warrants	6	11
Weighted average diluted common shares outstanding	57,394	57,125
Diluted earnings per common share	$ 0.50	$ 0.37
Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive.	14	27