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 September 30, 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

(Registrant’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	☐	(Do not check if a smaller reporting company)	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 October 31, 2017 was 58,373,165.

TABLE OF CONTENTS

		Page
	PART I — FINANCIAL INFORMATION
Item 1.	Financial Statements (unaudited)
	Consolidated Balance Sheets - September 30, 2017 and December 31, 2016	1
	Consolidated Statements of Income - three and nine months ended September 30, 2017 and 2016	2
	Consolidated Statements of Comprehensive Income - three and nine months ended September 30, 2017 and 2016	3
	Consolidated Statements of Changes in Shareholders’ Equity - nine months ended September 30, 2017 and 2016	4
	Consolidated Statements of Cash Flows - nine months ended September 30, 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	53
Item 4.	Controls and Procedures	53
	PART II — OTHER INFORMATION
Item 1.	Legal Proceedings	54
Item 1A.	Risk Factors	54
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	54
Item 3.	Defaults Upon Senior Securities	54
Item 4.	Mine Safety Disclosures	54
Item 5.	Other Information	54
Item 6.	Exhibits	55
	Signatures	56

i

PART I - FINANCIAL INFORMATION

Item 1. FINANCIAL STATEMENTS

CONSOLIDATED BALANCE SHEETS

Columbia Banking System, Inc.

(Unaudited)

			September 30, 2017			December 31, 2016
ASSETS			(in thousands)
Cash and due from banks			$	186,116		$	193,038
Interest-earning deposits with banks			136,578			31,200
Total cash and cash equivalents			322,694			224,238
Securities available for sale at fair value (amortized cost of $2,215,335 and $2,299,037, respectively)			2,207,873			2,278,577
Federal Home Loan Bank stock at cost			10,240			10,240
Loans held for sale			7,802			5,846
Loans, net of unearned income of ($29,229) and ($33,718), respectively			6,512,006			6,213,423
Less: allowance for loan and lease losses			71,616			70,043
Loans, net			6,440,390			6,143,380
FDIC loss-sharing asset			—			3,535
Interest receivable			36,163			30,074
Premises and equipment, net			143,351			150,342
Other real estate owned			3,682			5,998
Goodwill			382,762			382,762
Other intangible assets, net			13,845			17,631
Other assets			245,776			256,984
Total assets			$	9,814,578		$	9,509,607
LIABILITIES AND SHAREHOLDERS’ EQUITY
Deposits:
Noninterest-bearing			$	4,119,950		$	3,944,495
Interest-bearing			4,221,767			4,114,920
Total deposits			8,341,717			8,059,415
Federal Home Loan Bank advances			6,465			6,493
Securities sold under agreements to repurchase			40,933			80,822
Other liabilities			97,035			111,865
Total liabilities			8,486,150			8,258,595
Commitments and contingent liabilities (Note 10)
Shareholders’ equity:
	September 30, 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	58,376	58,042	1,003,887			995,837
Retained earnings			330,474			271,957
Accumulated other comprehensive loss			(5,933		)	(18,999		)
Total shareholders’ equity			1,328,428			1,251,012
Total liabilities and shareholders’ equity			$	9,814,578		$	9,509,607

See accompanying Notes to unaudited Consolidated Financial Statements.

1

CONSOLIDATED STATEMENTS OF INCOME

Columbia Banking System, Inc.

(Unaudited)

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2017			2016			2017			2016
	(in thousands except per share amounts)
Interest Income
Loans	$	78,641		$	74,956		$	228,340		$	216,923
Taxable securities	8,718			8,988			29,172			25,834
Tax-exempt securities	2,718			2,799			8,125			8,397
Deposits in banks	226			15			268			81
Total interest income	90,303			86,758			265,905			251,235
Interest Expense
Deposits	1,083			823			2,778			2,352
Federal Home Loan Bank advances	163			229			979			594
Other borrowings	128			134			383			407
Total interest expense	1,374			1,186			4,140			3,353
Net Interest Income	88,929			85,572			261,765			247,882
Provision (recapture) for loan and lease losses	(648		)	1,866			5,304			10,760
Net interest income after provision (recapture) for loan and lease losses	89,577			83,706			256,461			237,122
Noninterest Income
Deposit account and treasury management fees	7,685			7,222			22,368			21,304
Card revenue	6,735			6,114			18,660			17,817
Financial services and trust revenue	2,645			2,746			8,520			8,347
Loan revenue	3,154			2,949			9,736			8,013
Merchant processing revenue	—			2,352			4,283			6,726
Bank owned life insurance	1,290			1,073			4,003			3,459
Investment securities gains	—			572			—			1,174
Change in FDIC loss-sharing asset	—			(104		)	(447		)	(2,197		)
Gain on sale of merchant card services portfolio	14,000			—			14,000			—
Other	1,558			242			4,938			1,109
Total noninterest income	37,067			23,166			86,061			65,752
Noninterest Expense
Compensation and employee benefits	39,983			38,476			119,201			112,086
Occupancy	8,085			8,219			22,853			26,044
Merchant processing expense	—			1,161			2,196			3,312
Advertising and promotion	969			1,993			2,923			3,878
Data processing	4,122			4,275			13,071			12,350
Legal and professional fees	2,880			2,264			9,196			5,366
Taxes, licenses and fees	1,505			1,491			3,494			4,079
Regulatory premiums	782			776			2,299			2,985
Net cost (benefit) of operation of other real estate owned	271			(249		)	422			(61		)
Amortization of intangibles	1,188			1,460			3,786			4,526
Other	7,752			7,398			25,949			21,563
Total noninterest expense	67,537			67,264			205,390			196,128
Income before income taxes	59,107			39,608			137,132			106,746
Income tax provision	18,338			12,124			40,032			32,598
Net Income	$	40,769		$	27,484		$	97,100		$	74,148
Earnings per common share
Basic	$	0.70		$	0.47		$	1.67		$	1.28
Diluted	$	0.70		$	0.47		$	1.67		$	1.28
Dividends paid per common share	$	0.22		$	0.39		$	0.66		$	1.14
Weighted average number of common shares outstanding	57,566			57,215			57,459			57,173
Weighted average number of diluted common shares outstanding	57,571			57,225			57,465			57,183

See accompanying Notes to unaudited Consolidated Financial Statements.

2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

Columbia Banking System, Inc.

(Unaudited) 

	Three Months Ended
	September 30,
	2017		2016
	(in thousands)
Net income	$	40,769	$	27,484
Other comprehensive income (loss), net of tax:
Unrealized gain from securities:
Net unrealized holding gain (loss) from available for sale securities arising during the period, net of tax of ($312) and $2,305	549		(4,049		)
Reclassification adjustment of net gain from sale of available for sale securities included in income, net of tax of $0 and $208	—		(364		)
Net unrealized gain (loss) from securities, net of reclassification adjustment	549		(4,413		)
Pension plan liability adjustment:
Amortization of unrecognized net actuarial loss included in net periodic pension cost, net of tax of ($26) and ($60)	46		107
Pension plan liability adjustment, net	46		107
Other comprehensive income (loss)	595		(4,306		)
Total comprehensive income	$	41,364	$	23,178

	Nine Months Ended
	September 30,
	2017		2016
	(in thousands)
Net income	$	97,100	$	74,148
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) from securities:
Net unrealized holding gain from available for sale securities arising during the period, net of tax of ($4,716) and ($13,225)	8,284		23,229
Reclassification adjustment of net gain from sale of available for sale securities included in income, net of tax of $0 and $426	—		(748		)
Net unrealized gain from securities, net of reclassification adjustment	8,284		22,481
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 ($101) and ($182)	178		319
Pension plan liability adjustment, net	4,782		319
Other comprehensive income	13,066		22,800
Total comprehensive income	$	110,166	$	96,948

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	—		—			—		—			97,100			—			97,100
Other comprehensive income	—		—			—		—			—			13,066			13,066
Issuance of common stock - stock option and other plans	—		—			49		1,980			—			—			1,980
Issuance of common stock - restricted stock awards, net of canceled awards	—		—			238		5,915			—			—			5,915
Preferred stock conversion to common stock	(9	)	(2,217		)	102		2,217			—			—			—
Purchase and retirement of common stock	—		—			(55	)	(2,246		)	—			—			(2,246		)
Cash dividends paid on common stock	—		—			—		—			(38,466		)	—			(38,466		)
Balance at September 30, 2017	—		$	—		58,376		$	1,003,887		$	330,474		$	(5,933	)	$	1,328,428
Balance at January 1, 2016	9		$	2,217		57,724		$	990,281		$	255,925		$	(6,295	)	$	1,242,128
Net income	—		—			—		—			74,148			—			74,148
Other comprehensive income	—		—			—		—			—			22,800			22,800
Issuance of common stock - stock option and other plans	—		—			47		1,304			—			—			1,304
Issuance of common stock - restricted stock awards, net of canceled awards	—		—			310		3,626			—			—			3,626
Purchase and retirement of common stock	—		—			(38	)	(1,113		)	—			—			(1,113		)
Preferred dividends	—		—			—		—			(117		)	—			(117		)
Cash dividends paid on common stock	—		—			—		—			(66,041		)	—			(66,041		)
Balance at September 30, 2016	9		$	2,217		58,043		$	994,098		$	263,915		$	16,505		$	1,276,735

See accompanying Notes to unaudited Consolidated Financial Statements.

4

CONSOLIDATED STATEMENTS OF CASH FLOWS Columbia Banking System, Inc. (Unaudited)
	Nine Months Ended September 30,
	2017			2016
	(in thousands)
Cash Flows From Operating Activities
Net income	$	97,100		$	74,148
Adjustments to reconcile net income to net cash provided by operating activities
Provision for loan and lease losses	5,304			10,760
Stock-based compensation expense	5,915			3,626
Depreciation, amortization and accretion	21,483			27,796
Investment securities gains	—			(1,174		)
Net realized (gain) loss on sale of premises and equipment, loans held for investment and other assets	(189		)	186
Net realized loss on sale and valuation adjustments of other real estate owned	489			101
Gain on sale of merchant card services portfolio	(14,000		)	—
Termination of FDIC loss share agreements charge	2,409			—
Originations of loans held for sale	(99,130		)	(76,645		)
Proceeds from sales of loans held for sale	97,174			77,793
Net change in:
Interest receivable	(6,089		)	(3,729		)
Interest payable	(21		)	(84		)
Other assets	3,359			(7,714		)
Other liabilities	(2,624		)	13,416
Net cash provided by operating activities	111,180			118,480
Cash Flows From Investing Activities
Loans originated and acquired, net of principal collected	(304,831		)	(450,914		)
Purchases of:
Securities available for sale	(130,906		)	(502,602		)
Premises and equipment	(4,380		)	(2,705		)
Federal Home Loan Bank stock	(92,040		)	(57,799		)
Proceeds from:
FDIC reimbursement on loss-sharing asset	26			878
Sales of securities available for sale	—			120,800
Principal repayments and maturities of securities available for sale	200,470			199,677
Sales of premises and equipment and loans held for investment	12,157			7,391
Sale of merchant card services portfolio	14,000			—
Redemption of Federal Home Loan Bank stock	92,040			57,881
Sales of other real estate and other personal property owned	1,901			5,845
Payment to FDIC to terminate loss-sharing agreements	(4,666		)	—
Payments to FDIC related to loss-sharing asset	(210		)	(855		)
Net cash used in investing activities	(216,439		)	(622,403		)
Cash Flows From Financing Activities
Net increase in deposits	282,336			619,162
Net decrease in sweep repurchase agreements	(39,889		)	(30,510		)
Proceeds from:
Federal Home Loan Bank advances	2,301,000			1,347,000
Federal Reserve Bank borrowings	10			10
Exercise of stock options	1,980			1,304
Payments for:
Repayment of Federal Home Loan Bank advances	(2,301,000		)	(1,349,000		)
Repayment of Federal Reserve Bank borrowings	(10		)	(10		)
Common stock dividends	(38,466		)	(66,041		)
Preferred stock dividends	—			(117		)
Purchase and retirement of common stock	(2,246		)	(1,113		)
Net cash provided by financing activities	203,715			520,685
Increase in cash and cash equivalents	98,456			16,762
Cash and cash equivalents at beginning of period	224,238			175,302
Cash and cash equivalents at end of period	$	322,694		$	192,064

5

CONSOLIDATED STATEMENTS OF CASH FLOWS, Continued Columbia Banking System, Inc. (Unaudited)
	Nine Months Ended September 30,
	2017		2016
	(in thousands)
Supplemental Information:
Cash paid during the period for:
Cash paid for interest	$	4,161	$	3,437
Cash paid for income tax	$	37,701	$	20,825
Non-cash investing and financing activities
Loans transferred to other real estate owned	$	74	$	1,202

See accompanying Notes to unaudited Consolidated Financial Statements.

6

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

Columbia Banking System, Inc.

1. Basis of Presentation, Significant Accounting Policies and Recent Developments

Basis of Presentation

The interim unaudited Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information and with instructions to Form 10-Q and Article 10 of Regulation S-X. The Consolidated Financial Statements include the accounts of Columbia Banking System, Inc. (“we”, “our”, “Columbia” or the “Company”) and its subsidiaries, including its wholly owned banking subsidiary Columbia State Bank (“Columbia Bank” or the “Bank”) and Columbia Trust Company (“Columbia Trust”). All intercompany transactions and accounts have been eliminated in consolidation. In the opinion of management, all adjustments (consisting only of normal recurring adjustments) considered necessary for a fair statement of the results for the interim periods presented have been included. The results of operations for the nine months ended September 30, 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.

Recent Developments

In July 2017, we entered into an asset purchase agreement (the “Agreement”) with a third-party by which we sold our merchant card services portfolio. In addition, we transitioned our delivery of those services from in-house to an outsourced model to better serve our business clients via a broad selection of competitive, best-in-class payment processing solutions. The carrying amount of both assets and liabilities subject to the Agreement was zero. In the current quarter, we recorded a $14.0 million gain on sale of the merchant card services portfolio. Under the new business model, we share with the buyer in net merchant services revenue and no longer directly incur merchant processing expenses. Our net revenue share from merchant services is presented in “Card Revenue” in the Consolidated Statements of Income. For the third quarter of 2017, that net revenue share was $438 thousand.

2. Accounting Pronouncements Recently Issued

In May 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-09, Scope of Modification Accounting. The amendments in this ASU provide guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting. The amendments in ASU 2017-09 are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. Early adoption is permitted. The adoption of ASU 2017-09 is not expected to have a material impact on the Company’s consolidated financial statements.

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

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

7

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

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

In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting. The amendments included in this ASU simplify several aspects of the accounting for employee share-based payment transactions including the accounting for income taxes, forfeitures and statutory tax withholding requirements, as well as classification in the statement of cash flows. The Company adopted the amendments of ASU 2016-09 during the first quarter of 2017. Adoption of amended forfeiture guidance resulted in an opening period adjustment decreasing retained earnings $117 thousand and increasing common stock $184 thousand. Adoption of the amended excess tax benefit guidance resulted in an income tax benefit of $22 thousand for the three months ended September 30, 2017 and an income tax benefit of $1.3 million or $0.02 per diluted common share for the nine months ended September 30, 2017.

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

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers. The guidance in this update will replace most existing revenue recognition guidance in GAAP when it becomes effective. For public companies, this update was to be effective for interim and annual periods beginning after December 15, 2016. However, in August 2015, the FASB issued ASU 2015-14, which delayed the effective date of ASU 2014-09 by one year and permits companies to voluntarily adopt the new standard as of the original effective date. The FASB subsequently issued ASU 2016-08, ASU 2016-10, ASU 2016-12 and ASU 2017-13 to provide implementation guidance and practical expedients related to ASU 2014-09. The Company’s revenue is comprised of interest income on financial assets, which is excluded from the scope of this new guidance, and non-interest income. The adoption of ASU 2017-04 is not expected to have a material impact on the Company’s consolidated financial statements.

8

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)
September 30, 2017
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	1,391,636	$	3,143	$	(17,362	)	$	1,377,417
State and municipal securities	476,702		9,047		(2,261		)	483,488
U.S. government agency and government-sponsored enterprise securities	341,462		1,372		(1,230		)	341,604
U.S. government securities	251		—		(1		)	250
Other securities	5,284		82		(252		)	5,114
Total	$	2,215,335	$	13,644	$	(21,106	)	$	2,207,873
December 31, 2016
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	1,486,690	$	2,760	$	(23,718	)	$	1,465,732
State and municipal securities	473,914		6,343		(5,197		)	475,060
U.S. government agency and government-sponsored enterprise securities	332,348		1,065		(1,511		)	331,902
U.S. government securities	801		—		(1		)	800
Other securities	5,284		63		(264		)	5,083
Total	$	2,299,037	$	10,231	$	(30,691	)	$	2,278,577

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

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2017		2016		2017		2016
	(in thousands)
Proceeds from sales of available for sale securities	$	—	$	37,390	$	—	$	120,800
Gross realized gains	$	—	$	572	$	—	$	1,174
Gross realized losses	—		—		—		—
Net realized gains	$	—	$	572	$	—	$	1,174

The scheduled contractual maturities of investment securities available for sale at September 30, 2017 are presented as follows:

	September 30, 2017
	Amortized Cost		Fair Value
	(in thousands)
Due within one year	$	108,477	$	108,462
Due after one year through five years	506,439		509,784
Due after five years through ten years	672,288		671,188
Due after ten years	922,847		913,325
Other securities with no stated maturity	5,284		5,114
Total investment securities available-for-sale	$	2,215,335	$	2,207,873

9

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

	September 30, 2017
	(in thousands)
Washington and Oregon State to secure public deposits	$	242,188
Federal Reserve Bank to secure borrowings	54,723
Other securities pledged	122,392
Total securities pledged as collateral	$	419,303

The following table shows the gross unrealized losses and fair value of the Company’s investments with unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at September 30, 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)
September 30, 2017
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	537,162	$	(4,765	)	$	456,330	$	(12,597	)	$	993,492	$	(17,362	)
State and municipal securities	75,499		(700		)	45,328		(1,561		)	120,827		(2,261		)
U.S. government agency and government-sponsored enterprise securities	173,027		(665		)	21,517		(565		)	194,544		(1,230		)
U.S. government securities	250		(1		)	—		—			250		(1		)
Other securities	2,278		(36		)	2,740		(216		)	5,018		(252		)
Total	$	788,216	$	(6,167	)	$	525,915	$	(14,939	)	$	1,314,131	$	(21,106	)
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 September 30, 2017, there were 168 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations securities in an unrealized loss position, of which 84 were in a continuous loss position for 12 months or more. The decline in fair value is attributable to changes in interest rates relative to where these investments fall within the yield curve and their individual characteristics. Because the Company does not intend to sell these securities nor does the Company consider it more likely than not that it will be required to sell these securities before the recovery of amortized cost basis, which may be upon maturity, the Company does not consider these investments to be other-than-temporarily impaired at September 30, 2017.

At September 30, 2017, there were 107 state and municipal government securities in an unrealized loss position, of which 40 were in a continuous loss position for 12 months or more. The unrealized losses on state and municipal securities were caused by interest rate changes or widening of market spreads subsequent to the purchase of the individual securities. Management monitors published credit ratings of these securities for adverse changes. As of September 30, 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 September 30, 2017.

10

At September 30, 2017, there were 22 U.S. government agency and government-sponsored enterprise securities in an unrealized loss position, of which five 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 September 30, 2017.

At September 30, 2017, there was one U.S. government security in an unrealized loss position, which was not in a continuous loss position for 12 months or more. The decline in fair value is attributable to changes in interest rates relative to where this investment falls within the yield curve and its individual characteristics. Because the Company does not currently intend to sell this security nor does the Company consider it more likely than not that it will be required to sell this security before the recovery of amortized cost basis, which may be upon maturity, the Company does not consider this investment to be other-than-temporarily impaired at September 30, 2017.

At September 30, 2017, there were two other securities in an unrealized loss position, of which one was in a continuous unrealized loss position for 12 months or more. The decline in fair value is attributable to changes in interest rates and the additional risk premium investors are demanding for investment securities with these characteristics. The Company does not consider these investments to be other-than-temporarily impaired at September 30, 2017 as it has the intent and ability to hold these investments 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):

	September 30, 2017									December 31, 2016
	Loans, excluding PCI loans			PCI Loans			Total			Loans, excluding PCI loans			PCI Loans			Total
	(in thousands)
Commercial business	$	2,735,206		$	13,662		$	2,748,868		$	2,551,054		$	20,185		$	2,571,239
Real estate:
One-to-four family residential	176,487			14,325			190,812			170,331			17,862			188,193
Commercial and multifamily residential	2,825,794			79,336			2,905,130			2,719,830			89,231			2,809,061
Total real estate	3,002,281			93,661			3,095,942			2,890,161			107,093			2,997,254
Real estate construction:
One-to-four family residential	145,419			377			145,796			121,887			832			122,719
Commercial and multifamily residential	213,939			958			214,897			209,118			1,565			210,683
Total real estate construction	359,358			1,335			360,693			331,005			2,397			333,402
Consumer	323,913			11,819			335,732			329,261			15,985			345,246
Less: Net unearned income	(29,229		)	—			(29,229		)	(33,718		)	—			(33,718		)
Total loans, net of unearned income	6,391,529			120,477			6,512,006			6,067,763			145,660			6,213,423
Less: Allowance for loan and lease losses	(64,272		)	(7,344		)	(71,616		)	(59,528		)	(10,515		)	(70,043		)
Total loans, net	$	6,327,257		$	113,133		$	6,440,390		$	6,008,235		$	135,145		$	6,143,380
Loans held for sale	$	7,802		$	—		$	7,802		$	5,846		$	—		$	5,846

At September 30, 2017 and December 31, 2016, the Company had no material foreign activities. Substantially all of the Company’s loans and unfunded commitments are geographically concentrated in its service areas within the states of Washington, Oregon and Idaho.

11

The Company has made loans to executive officers and directors of the Company and related interests. These loans are made on the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with unrelated persons and do not involve more than the normal risk of collectability. The aggregate dollar amount of these loans was $10.1 million at both September 30, 2017 and December 31, 2016. During the first nine months of 2017, there were $203 thousand in advances and $253 thousand in repayments.

At September 30, 2017 and December 31, 2016, $2.26 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 $69.8 million and $54.2 million of commercial loans to the Federal Reserve Bank for additional borrowing capacity at September 30, 2017 and December 31, 2016, respectively.

The following is an analysis of nonaccrual loans as of September 30, 2017 and December 31, 2016:

	September 30, 2017				December 31, 2016
	Recorded Investment Nonaccrual Loans		Unpaid Principal Balance Nonaccrual Loans		Recorded Investment Nonaccrual Loans		Unpaid Principal Balance Nonaccrual Loans
	(in thousands)
Commercial business:
Secured	$	25,187	$	35,843	$	11,524	$	21,503
Unsecured	26		1,342		31		303
Real estate:
One-to-four family residential	816		2,904		568		1,302
Commercial & multifamily residential:
Commercial land	2,333		2,629		934		922
Income property	3,586		4,702		4,005		4,247
Owner occupied	3,224		4,712		6,248		9,030
Real estate construction:
One-to-four family residential:
Land and acquisition	26		803		14		102
Residential construction	213		2,568		549		549
Consumer	4,906		5,418		3,883		4,331
Total	$	40,317	$	60,921	$	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 September 30, 2017 and December 31, 2016:

	Current Loans		30 - 59 Days Past Due		60 - 89 Days Past Due		Greater than 90 Days Past Due		Total Past Due		Nonaccrual Loans		Total Loans
September 30, 2017	(in thousands)
Commercial business:
Secured	$	2,607,265	$	2,292	$	1,302	$	—	$	3,594	$	25,187	$	2,636,046
Unsecured	93,879		1		18		—		19		26		93,924
Real estate:
One-to-four family residential	171,936		330		1,408		—		1,738		816		174,490
Commercial & multifamily residential:
Commercial land	283,321		—		—		—		—		2,333		285,654
Income property	1,375,163		1,493		2,656		—		4,149		3,586		1,382,898
Owner occupied	1,135,584		1,410		390		—		1,800		3,224		1,140,608
Real estate construction:
One-to-four family residential:
Land and acquisition	6,787		—		—		—		—		26		6,813
Residential construction	137,707		—		—		—		—		213		137,920
Commercial & multifamily residential:
Income property	172,112		—		—		—		—		—		172,112
Owner occupied	39,561		—		—		—		—		—		39,561
Consumer	315,688		552		357		—		909		4,906		321,503
Total	$	6,339,003	$	6,078	$	6,131	$	—	$	12,209	$	40,317	$	6,391,529
	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 September 30, 2017 and December 31, 2016:

	Recorded Investment of Loans Collectively Measured for Contingency Provision		Recorded Investment of Loans Individually Measured for Specific Impairment		Impaired Loans With Recorded Allowance						Impaired Loans Without Recorded Allowance
					Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance
September 30, 2017	(in thousands)
Commercial business:
Secured	$	2,614,647	$	21,399	$	—	$	—	$	—	$	21,399	$	26,655
Unsecured	93,924		—		—		—		—		—		—
Real estate:
One-to-four family residential	173,562		928		459		736		26		469		1,030
Commercial & multifamily residential:
Commercial land	283,355		2,299		—		—		—		2,299		2,287
Income property	1,378,127		4,771		519		523		25		4,252		4,570
Owner occupied	1,134,945		5,663		—		—		—		5,663		8,573
Real estate construction:
One-to-four family residential:
Land and acquisition	6,813		—		—		—		—		—		—
Residential construction	137,920		—		—		—		—		—		—
Commercial & multifamily residential:
Income property	172,112		—		—		—		—		—		—
Owner occupied	35,511		4,050		—		—		—		4,050		4,050
Consumer	315,038		6,465		5,692		5,982		51		773		914
Total	$	6,345,954	$	45,575	$	6,670	$	7,241	$	102	$	38,905	$	48,079
	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 and nine month periods indicated:

	Three Months Ended September 30,								Nine Months Ended September 30,
	2017				2016				2017				2016
	Average Recorded Investment Impaired Loans		Interest Recognized on Impaired Loans		Average Recorded Investment Impaired Loans		Interest Recognized on Impaired Loans		Average Recorded Investment Impaired Loans		Interest Recognized on Impaired Loans		Average Recorded Investment Impaired Loans		Interest Recognized on Impaired Loans
	(in thousands)
Commercial business:
Secured	$	22,395	$	2	$	6,909	$	15	$	15,349	$	25	$	9,506	$	48
Unsecured	—		—		—		—		—		—		—		—
Real estate:
One-to-four family residential	856		15		617		5		688		37		796		8
Commercial & multifamily residential:
Commercial land	2,549		—		708		—		2,026		—		354		—
Income property	4,214		21		1,939		8		4,137		27		2,010		19
Owner occupied	4,530		127		4,486		—		4,496		319		5,001		—
Real estate construction:
One-to-four family residential:
Land and acquisition	—		—		103		1		4		—		245		4
Residential construction	—		—		449		—		84		—		506		—
Commercial & multifamily residential:
Owner occupied	2,025		151		—		—		1,012		151		—		—
Consumer	6,054		58		3,345		25		5,712		105		2,084		46
Total	$	42,623	$	374	$	18,556	$	54	$	33,508	$	664	$	20,502	$	125

15

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

	Three months ended September 30, 2017					Three months ended September 30, 2016
	Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment
	(dollars in thousands)
Commercial business:
Secured	2	$	808	$	808	2	$	90	$	90
Real estate:
One-to-four family residential	2	201		201		1	85		85
Commercial and multifamily residential:
Income property	1	1,152		1,152		—	—		—
Owner occupied	1	78		78		—	—		—
Real estate construction:
Commercial and multifamily residential:
Owner occupied	1	4,050		4,050		—	—		—
Consumer	17	1,672		1,672		10	731		731
Total	24	$	7,961	$	7,961	13	$	906	$	906

	Nine months ended September 30, 2017					Nine months ended September 30, 2016
	Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment
	(dollars in thousands)
Commercial business:
Secured	7	$	2,586	$	2,586	7	$	1,753	$	1,753
Real estate:
One-to-four family residential	3	583		583		2	115		115
Commercial and multifamily residential:
Income property	1	1,152		1,152		—	—		—
Owner occupied	1	78		78		1	250		250
Real estate construction:
Commercial and multifamily residential:
Owner occupied	1	4,050		4,050		—	—		—
Consumer	35	4,033		4,033		28	3,442		3,442
Total	48	$	12,482	$	12,482	38	$	5,560	$	5,560

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 $529 thousand of additional funds on loans classified as TDR as of September 30, 2017. The Company had $508 thousand of such commitments at December 31, 2016. The Company did not have any loans modified as TDR that defaulted within twelve months of being modified as TDR during the three or nine months ended September 30, 2017 and 2016.

16

Purchased Credit Impaired Loans

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

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

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

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

The following is an analysis of our PCI loans, net of related allowance for losses and remaining valuation discounts as of September 30, 2017 and December 31, 2016:

	September 30, 2017		December 31, 2016
	(in thousands)
Commercial business	$	14,895	$	21,606
Real estate:
One-to-four family residential	16,698		20,643
Commercial and multifamily residential	83,082		94,795
Total real estate	99,780		115,438
Real estate construction:
One-to-four family residential	377		832
Commercial and multifamily residential	1,059		1,726
Total real estate construction	1,436		2,558
Consumer	13,039		17,649
Subtotal of PCI loans	129,150		157,251
Less:
Valuation discount resulting from acquisition accounting	8,673		11,591
Allowance for loan losses	7,344		10,515
PCI loans, net of allowance for loan losses	$	113,133	$	135,145

The following table shows the changes in accretable yield for PCI loans for the three and nine months ended September 30, 2017 and 2016:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
	(in thousands)
Balance at beginning of period	$	35,706		$	52,909		$	45,191		$	58,981
Accretion	(2,766		)	(4,902		)	(9,830		)	(12,905		)
Disposals	—			(178		)	(158		)	(157		)
Reclassifications from (to) nonaccretable difference	(892		)	1,034			(3,155		)	2,944
Balance at end of period	$	32,048		$	48,863		$	32,048		$	48,863

17

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 nine months ended September 30, 2017 and 2016.

The following tables show a detailed analysis of the allowance for the three and nine months ended September 30, 2017 and 2016:

	Beginning Balance		Charge-offs			Recoveries		Provision (Recovery)			Ending Balance		Specific Reserve		General Allocation
Three months ended September 30, 2017	(in thousands)
Commercial business:
Secured	$	39,539	$	(1,362	)	$	550	$	(969	)	$	37,758	$	—	$	37,758
Unsecured	1,147		—			138		(298		)	987		—		987
Real estate:
One-to-four family residential	628		—			40		3			671		26		645
Commercial & multifamily residential:
Commercial land	2,356		—			45		(97		)	2,304		—		2,304
Income property	6,854		—			9		241			7,104		25		7,079
Owner occupied	6,512		—			4		306			6,822		—		6,822
Real estate construction:
One-to-four family residential:
Land and acquisition	361		—			14		(83		)	292		—		292
Residential construction	1,377		—			6		(272		)	1,111		—		1,111
Commercial & multifamily residential:
Income property	985		—			—		279			1,264		—		1,264
Owner occupied	1,382		—			—		(87		)	1,295		—		1,295
Consumer	3,551		(263		)	343		42			3,673		51		3,622
Purchased credit impaired	8,061		(1,633		)	1,389		(473		)	7,344		—		7,344
Unallocated	231		—			—		760			991		—		991
Total	$	72,984	$	(3,258	)	$	2,538	$	(648	)	$	71,616	$	102	$	71,514
	Beginning Balance		Charge-offs			Recoveries		Provision (Recovery)			Ending Balance		Specific Reserve		General Allocation
Nine months ended September 30, 2017	(in thousands)
Commercial business:
Secured	$	36,050	$	(6,071	)	$	3,750	$	4,029		$	37,758	$	—	$	37,758
Unsecured	960		(18		)	247		(202		)	987		—		987
Real estate:
One-to-four family residential	599		(460		)	380		152			671		26		645
Commercial & multifamily residential:
Commercial land	1,797		—			45		462			2,304		—		2,304
Income property	7,342		—			104		(342		)	7,104		25		7,079
Owner occupied	6,439		—			114		269			6,822		—		6,822
Real estate construction:
One-to-four family residential:
Land and acquisition	316		(14		)	61		(71		)	292		—		292
Residential construction	669		—			46		396			1,111		—		1,111
Commercial & multifamily residential:
Income property	404		—			—		860			1,264		—		1,264
Owner occupied	1,192		—			—		103			1,295		—		1,295
Consumer	3,534		(1,156		)	876		419			3,673		51		3,622
Purchased credit impaired	10,515		(5,372		)	3,737		(1,536		)	7,344		—		7,344
Unallocated	226		—			—		765			991		—		991
Total	$	70,043	$	(13,091	)	$	9,360	$	5,304		$	71,616	$	102	$	71,514

18

	Beginning Balance		Charge-offs			Recoveries		Provision (Recovery)			Ending Balance		Specific Reserve		General Allocation
Three months ended September 30, 2016	(in thousands)
Commercial business:
Secured	$	31,808	$	(2,128	)	$	787	$	2,008		$	32,475	$	873	$	31,602
Unsecured	1,265		(31		)	67		(128		)	1,173		—		1,173
Real estate:
One-to-four family residential	675		—			81		221			977		353		624
Commercial & multifamily residential:
Commercial land	1,422		—			—		92			1,514		—		1,514
Income property	8,046		—			10		149			8,205		28		8,177
Owner occupied	6,336		—			10		487			6,833		—		6,833
Real estate construction:
One-to-four family residential:
Land and acquisition	587		—			2		(134		)	455		—		455
Residential construction	1,376		—			19		(393		)	1,002		—		1,002
Commercial & multifamily residential:
Income property	904		—			107		(480		)	531		—		531
Owner occupied	1,384		—			—		57			1,441		—		1,441
Consumer	3,559		(383		)	399		168			3,743		46		3,697
Purchased credit impaired	11,781		(2,062		)	2,216		(433		)	11,502		—		11,502
Unallocated	161		—			—		252			413		—		413
Total	$	69,304	$	(4,604	)	$	3,698	$	1,866		$	70,264	$	1,300	$	68,964
	Beginning Balance		Charge-offs			Recoveries		Provision (Recovery)			Ending Balance		Specific Reserve		General Allocation
Nine months ended September 30, 2016	(in thousands)
Commercial business:
Secured	$	32,321	$	(8,798	)	$	2,126	$	6,826		$	32,475	$	873	$	31,602
Unsecured	1,299		(75		)	143		(194		)	1,173		—		1,173
Real estate:
One-to-four family residential	916		(35		)	142		(46		)	977		353		624
Commercial & multifamily residential:
Commercial land	1,178		(26		)	2		360			1,514		—		1,514
Income property	6,616		—			191		1,398			8,205		28		8,177
Owner occupied	5,550		—			26		1,257			6,833		—		6,833
Real estate construction:
One-to-four family residential:
Land and acquisition	339		—			55		61			455		—		455
Residential construction	733		—			225		44			1,002		—		1,002
Commercial & multifamily residential:
Income property	388		—			109		34			531		—		531
Owner occupied	1,006		—			—		435			1,441		—		1,441
Consumer	3,531		(983		)	765		430			3,743		46		3,697
Purchased credit impaired	13,726		(7,826		)	5,291		311			11,502		—		11,502
Unallocated	569		—			—		(156		)	413		—		413
Total	$	68,172	$	(17,743	)	$	9,075	$	10,760		$	70,264	$	1,300	$	68,964

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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					Nine Months Ended
	September 30,					September 30,
	2017			2016		2017		2016
	(in thousands)
Balance at beginning of period	$	3,555		$	2,780	$	2,705	$	2,930
Net changes in the allowance for unfunded commitments and letters of credit	(75		)	125		775		(25		)
Balance at end of period	$	3,480		$	2,905	$	3,480	$	2,905

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.

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The following is an analysis of the credit quality of our loan portfolio, excluding PCI loans, as of September 30, 2017 and December 31, 2016:

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
September 30, 2017	(in thousands)
Loans, excluding PCI loans:
Commercial business:
Secured	$	2,464,772	$	69,577	$	101,697	$	—	$	—	$	2,636,046
Unsecured	92,881		—		1,043		—		—		93,924
Real estate:
One-to-four family residential	171,362		1,195		1,933		—		—		174,490
Commercial and multifamily residential:
Commercial land	276,675		5,527		3,452		—		—		285,654
Income property	1,356,196		1,797		24,905		—		—		1,382,898
Owner occupied	1,101,139		14,275		25,194		—		—		1,140,608
Real estate construction:
One-to-four family residential:
Land and acquisition	6,787		—		26		—		—		6,813
Residential construction	135,965		406		1,549		—		—		137,920
Commercial and multifamily residential:
Income property	156,727		15,385		—		—		—		172,112
Owner occupied	35,511		—		4,050		—		—		39,561
Consumer	312,828		—		8,675		—		—		321,503
Total	$	6,110,843	$	108,162	$	172,524	$	—	$	—	6,391,529
Less:
Allowance for loan and lease losses											64,272
Loans, excluding PCI loans, net											$	6,327,257

	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

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The following is an analysis of the credit quality of our PCI loan portfolio as of September 30, 2017 and December 31, 2016:

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
September 30, 2017	(in thousands)
PCI loans:
Commercial business:
Secured	$	13,353	$	—	$	761	$	—	$	—	$	14,114
Unsecured	714		—		67		—		—		781
Real estate:
One-to-four family residential	15,883		—		815		—		—		16,698
Commercial and multifamily residential:
Commercial land	9,854		—		—		—		—		9,854
Income property	26,174		—		—		—		—		26,174
Owner occupied	46,265		—		789		—		—		47,054
Real estate construction:
One-to-four family residential:
Land and acquisition	319		—		58		—		—		377
Commercial and multifamily residential:
Income property	773		—		—		—		—		773
Owner occupied	286		—		—		—		—		286
Consumer	12,321		—		718		—		—		13,039
Total	$	125,942	$	—	$	3,208	$	—	$	—	129,150
Less:
Valuation discount resulting from acquisition accounting											8,673
Allowance for loan losses											7,344
PCI loans, net											$	113,133

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

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6. Other Real Estate Owned (“OREO”)

The following tables set forth activity in OREO for the three and nine months ended September 30, 2017 and 2016:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
	(in thousands)
Balance, beginning of period	$	4,058		$	10,613		$	5,998		$	13,738
Transfers in	74			891			74			1,202
Valuation adjustments	(138		)	(14		)	(364		)	(290		)
Proceeds from sale of OREO property	(182		)	(2,569		)	(1,901		)	(5,845		)
Gain (loss) on sale of OREO, net	(130		)	73			(125		)	189
Balance, end of period	$	3,682		$	8,994		$	3,682		$	8,994

At September 30, 2017, there were $74 thousand in foreclosed residential real estate properties held as OREO and the recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process was $686 thousand.

7. FDIC Loss-sharing Asset and Covered Assets

During the second quarter of 2017, we entered into an agreement with the FDIC to terminate all loss-sharing agreements ahead of their contractual maturities. These loss-sharing agreements were entered into in 2010 and 2011 in conjunction with our acquisitions of (1) Columbia River Bank in January 2010, (2) American Marine Bank in January 2010, (3) Summit Bank in May 2011 and (4) First Heritage Bank in May 2011. Under the early termination, all rights and obligations of the Company and the FDIC have been resolved and completed. The Company paid the FDIC $4.7 million as consideration for early termination. The early termination was recorded in the Company’s financial statements by removing the remaining FDIC loss-sharing asset of $3.1 million and the remaining FDIC clawback liability of $5.4 million and recording a one-time, pre-tax charge on termination of $2.4 million, recorded to “Other” noninterest expense. Prior to entering into the termination agreement, the Company had $74.0 million of non-single family covered assets and $26.4 million of single family covered assets at March 31, 2017. As a result of the termination agreement, the Company will benefit from all future recoveries, and be responsible for all future losses and expenses related to the assets previously subject to the loss-sharing agreements.

The following table shows a detailed analysis of the FDIC loss-sharing asset for the three and nine months ended September 30, 2017 and 2016:

	Three Months Ended September 30,					Nine Months Ended September 30,
	2017		2016			2017			2016
	(in thousands)
Balance at beginning of period	$	—	$	4,266		$	3,535		$	6,568
Adjustments not reflected in income:
Cash paid to (received from) the FDIC, net	—		20			184			(23		)
FDIC shared recoveries, net	—		(590		)	(149		)	(756		)
Termination of FDIC loss-sharing agreements	—		—			(3,123		)	—
Adjustments reflected in noninterest income (1):
Amortization, net	—		(315		)	(414		)	(2,530		)
Loan impairment	—		266			40			393
Sale of other real estate	—		(49		)	18			71
Valuation adjustments of other real estate owned	—		—			—			(22		)
Other	—		(6		)	(91		)	(109		)
Balance at end of period	$	—	$	3,592		$	—		$	3,592

__________

(1) Amounts shown in the table above for adjustments reflected in noninterest income include only those adjustments recorded to the noninterest income line item “Change in FDIC loss-sharing asset” in the Consolidated Statements of Income and do not include the charge related to the termination of the FDIC loss-sharing agreements.

23

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 Company performed an annual impairment assessment as of July 31, 2017 and concluded that there was no impairment.

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

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

	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
	(in thousands)
Goodwill
Total goodwill	$	382,762		$	382,762		$	382,762		$	382,762
Other intangible assets, net
Core deposit intangible:
Gross core deposit intangible balance at beginning of period	58,598			58,598			58,598			58,598
Accumulated amortization at beginning of period	(44,484		)	(39,006		)	(41,886		)	(35,940		)
Core deposit intangible, net at beginning of period	14,114			19,592			16,712			22,658
CDI current period amortization	(1,188		)	(1,460		)	(3,786		)	(4,526		)
Total core deposit intangible, net at end of period	12,926			18,132			12,926			18,132
Intangible assets not subject to amortization	919			919			919			919
Other intangible assets, net at end of period	13,845			19,051			13,845			19,051
Total goodwill and other intangible assets at end of period	$	396,607		$	401,813		$	396,607		$	401,813

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

	Amount
	(in thousands)
Year ending December 31,
2017	$	1,127
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 September 30, 2017 and December 31, 2016 was $380.0 million and $309.3 million, respectively. During the three and nine months ended September 30, 2017, mark-to-market gains of $6 thousand and $12 thousand were recorded to “Other”

24

noninterest expense. During the three and nine months ended September 30, 2016, mark-to-market gains of $9 thousand and $2 thousand were recorded to “Other” noninterest expense.

The following table presents the fair value of derivatives not designated as hedging instruments at September 30, 2017 and December 31, 2016:

Asset Derivatives

Liability Derivatives

September 30, 2017

December 31, 2016

September 30, 2017

December 31, 2016

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

(in thousands)

Interest rate contracts

Other assets

$

8,992

Other assets

$

9,012

Other liabilities

$

9,004

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
September 30, 2017	(in thousands)
Assets
Interest rate contracts	$	8,992	$	—	$	8,992	$	—		$	8,992
Liabilities
Interest rate contracts	$	9,004	$	—	$	9,004	$	(9,004	)	$	—
Repurchase agreements	$	40,933	$	—	$	40,933	$	(40,933	)	$	—
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
September 30, 2017	(in thousands)
Class of collateral pledged for repurchase agreements
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	15,933	$	—	$	—	$	25,000	$	40,933
Gross amount of recognized liabilities for repurchase agreements									40,933
Amounts related to agreements not included in offsetting disclosure									$	—

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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.

Sale-leaseback transactions: On August 11, 2017, the Company sold one of its Idaho facilities and leased back the portion of the facility utilized for branch operations. The lease term is through August 2027, with monthly payments of approximately $26 thousand. The resulting gain on sale of $509 thousand was deferred in accordance with the Leases topic of the FASB ASC and is being amortized over the life of the respective lease. At September 30, 2017, the deferred gain was $501 thousand and is included in “Other liabilities” on the Consolidated Balance Sheets.

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 September 30, 2017, the deferred gain was $661 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 September 30, 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 $50.1 million and $49.7 million at September 30, 2017 and December 31, 2016, respectively. In addition, commitments under commercial letters of credit used to facilitate customers’ trade transactions and other off-balance sheet liabilities amounted to $2.9 million and $3.4 million at September 30, 2017 and December 31, 2016, respectively.

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

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.

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.

On July 27, 2017, the Company declared a regular quarterly cash dividend of $0.22 per common share payable on August 23, 2017 to shareholders of record at the close of business on August 9, 2017.

Subsequent to quarter end, on October 19, 2017, the Company declared a regular quarterly cash dividend of $0.22 per common share payable on November 14, 2017 to shareholders of record at the close of business on October 31, 2017.

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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.

12. Accumulated Other Comprehensive Loss

The following table shows changes in accumulated other comprehensive income (loss) by component for the three and nine month periods ended September 30, 2017 and 2016:

	Unrealized Gains and Losses on Available-for-Sale Securities (1)			Unrealized Gains and Losses on Pension Plan Liability (1)			Total (1)
Three months ended September 30, 2017	(in thousands)
Beginning balance	$	(4,969	)	$	(1,559	)	$	(6,528	)
Other comprehensive income before reclassifications	549			—			549
Amounts reclassified from accumulated other comprehensive income	—			46			46
Net current-period other comprehensive income	549			46			595
Ending balance	$	(4,420	)	$	(1,513	)	$	(5,933	)
Three months ended September 30, 2016
Beginning balance	$	27,280		$	(6,469	)	$	20,811
Other comprehensive loss before reclassifications	(4,049		)	—			(4,049		)
Amounts reclassified from accumulated other comprehensive income (loss)	(364		)	107			(257		)
Net current-period other comprehensive income (loss)	(4,413		)	107			(4,306		)
Ending balance	$	22,867		$	(6,362	)	$	16,505
Nine months ended September 30, 2017
Beginning balance	$	(12,704	)	$	(6,295	)	$	(18,999	)
Other comprehensive income before reclassifications	8,284			4,604			12,888
Amounts reclassified from accumulated other comprehensive income	—			178			178
Net current-period other comprehensive income	8,284			4,782			13,066
Ending balance	$	(4,420	)	$	(1,513	)	$	(5,933	)
Nine months ended September 30, 2016
Beginning balance	$	386		$	(6,681	)	$	(6,295	)
Other comprehensive income before reclassifications	23,229			—			23,229
Amounts reclassified from accumulated other comprehensive income (loss)	(748		)	319			(429		)
Net current-period other comprehensive income	22,481			319			22,800
Ending balance	$	22,867		$	(6,362	)	$	16,505

__________

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

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The following table shows details regarding the reclassifications from accumulated other comprehensive income (loss) for the three and nine month periods ended September 30, 2017 and 2016:

	Amount Reclassified from Accumulated Other Comprehensive Income (Loss)
	Three Months Ended September 30,						Nine Months Ended September 30,						Affected line Item in the Consolidated
	2017			2016			2017			2016			Statement of Income
	(in thousands)
Unrealized gains and losses on available-for-sale securities
Investment securities gains	$	—		$	572		$	—		$	1,174		Investment securities gains, net
	—			572			—			1,174			Total before tax
	—			(208		)	—			(426		)	Income tax provision
	$	—		$	364		$	—		$	748		Net of tax
Amortization of pension plan liability
Actuarial losses	$	(72	)	$	(167	)	$	(279	)	$	(501	)	Compensation and employee benefits
	(72		)	(167		)	(279		)	(501		)	Total before tax
	26			60			101			182			Income tax benefit
	$	(46	)	$	(107	)	$	(178	)	$	(319	)	Net of tax

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.

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The following table sets forth the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis at September 30, 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
September 30, 2017	(in thousands)
Assets
Securities available for sale:
U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations	$	1,377,417	$	—	$	1,377,417	$	—
State and municipal debt securities	483,488		—		483,488		—
U.S. government agency and government-sponsored enterprise securities	341,604		—		341,604		—
U.S. government securities	250		250		—		—
Other securities	5,114		—		5,114		—
Total securities available for sale	$	2,207,873	$	250	$	2,207,623	$	—
Other assets (Interest rate contracts)	$	8,992	$	—	$	8,992	$	—
Liabilities
Other liabilities (Interest rate contracts)	$	9,004	$	—	$	9,004	$	—

	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 nine month periods ended September 30, 2017 and 2016. The Company recognizes transfers between levels of the valuation hierarchy based on the valuation level at the end of the reporting period.

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Nonrecurring Measurements

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

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

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

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

	Fair value at September 30, 2017		Fair Value Measurements at Reporting Date Using						Losses During the Three Months Ended September 30, 2017		Losses During the Nine Months Ended September 30, 2017
			Level 1		Level 2		Level 3
	(in thousands)
Impaired loans	$	843	$	—	$	—	$	843	$	170	$	170
OREO	625		—		—		625		138		138
	$	1,468	$	—	$	—	$	1,468	$	308	$	308

	Fair value at September 30, 2016		Fair Value Measurements at Reporting Date Using						Losses During the Three Months Ended September 30, 2016		Losses During the Nine Months Ended September 30, 2016
			Level 1		Level 2		Level 3
	(in thousands)
Impaired loans	$	2,304	$	—	$	—	$	2,304	$	647	$	3,285
OREO	335		—		—		335		14		14
	$	2,639	$	—	$	—	$	2,639	$	661	$	3,299

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.

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Quantitative information about Level 3 fair value measurements

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

	Fair value at September 30, 2017		Valuation Technique	Unobservable Input	Range (Weighted Average) (1)
	(dollars in thousands)
Impaired loans - collateral-dependent (3)	$	715	Fair Market Value of Collateral	Adjustment to Stated Value	N/A (2)
Impaired loans - other (4)	$	128	Discounted Cash Flow	Discount Rate	7.75%
OREO	$	625	Fair Market Value of Collateral	Adjustment to Appraisal Value	N/A (2)
(1) Discount rate used in discounted cash flow valuation.
(2) Quantitative disclosures are not provided for collateral-dependent impaired loans and OREO because there were no adjustments made to the appraisal values or stated values during the current period.
(3) Collateral consists of a government agency guarantee.
(4) As there was only one impaired loan remeasured using discounted cash flows, a range of discounts could not be provided.

	Fair value at September 30, 2016		Valuation Technique	Unobservable Input	Range (Weighted Average) (1)
	(dollars in thousands)
Impaired loans - collateral-dependent (3)	$	943	Fair Market Value of Collateral	Adjustment to Stated Value	N/A (2)
Impaired loans - other	$	1,361	Discounted Cash Flow	Discount Rate	2.85% - 6.50% (3.85%)
OREO	$	335	Fair Market Value of Collateral	Adjustment to Appraisal Value	N/A (2)
(1) Discount rate used in discounted cash flow valuation.
(2) Quantitative disclosures are not provided for collateral-dependent impaired loans and OREO because there were no adjustments made to the appraisal values or stated values during the current period.
(3) Collateral consists of fixed assets and accounts receivable.

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Fair value of financial instruments

Because broadly traded markets do not exist for most of the Company’s financial instruments, the fair value calculations attempt to incorporate the effect of current market conditions at a specific time. These determinations are subjective in nature, involve uncertainties and matters of significant judgment and do not include tax ramifications; therefore, the results cannot be determined with precision, substantiated by comparison to independent markets and may not be realized in an actual sale or immediate settlement of the instruments. There may be inherent weaknesses in any calculation technique, and changes in the underlying assumptions used, including discount rates and estimates of future cash flows, could significantly affect the results. For all of these reasons, the aggregation of the fair value calculations presented herein do not represent, and should not be construed to represent, the underlying value of the Company.

The following methods and assumptions were used to estimate the fair value of each class of financial instruments for which it is practicable to estimate that value:

Cash and due from banks and interest-earning deposits with banks—The fair value of financial instruments that are short-term or reprice frequently and that have little or no risk are considered to have a fair value that approximates carrying value (Level 1).

Securities available for sale—Securities at fair value, other than U.S. Treasury Notes, are priced using a combination of market activity, industry recognized information sources, yield curves, discounted cash flow models and other factors (Level 2). U.S. Treasury Notes are priced using quotes in active markets (Level 1).

Federal Home Loan Bank stock—The fair value is based upon the par value of the stock which equates to its carrying value (Level 2).

Loans held for sale—The carrying amount of loans held for sale approximates their fair values due to the short period of time between the origination and sale dates (Level 2).

Loans—Loans are not recorded at fair value on a recurring basis. Nonrecurring fair value adjustments are periodically recorded on impaired loans that are measured for impairment based on the fair value of collateral. For most performing loans, fair value is estimated using expected duration and lending rates that would have been offered on September 30, 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 September 30, 2017 (Level 3).

FDIC loss-sharing asset —The fair value of the FDIC loss-sharing asset was 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.

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The following tables summarize carrying amounts and estimated fair values of selected financial instruments as well as assumptions used by the Company in estimating fair value at September 30, 2017 and December 31, 2016:

	September 30, 2017
	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
	(in thousands)
Assets
Cash and due from banks	$	186,116	$	186,116	$	186,116	$	—	$	—
Interest-earning deposits with banks	136,578		136,578		136,578		—		—
Securities available for sale	2,207,873		2,207,873		250		2,207,623		—
FHLB stock	10,240		10,240		—		10,240		—
Loans held for sale	7,802		7,802		—		7,802		—
Loans	6,440,390		6,309,449		—		—		6,309,449
Interest rate contracts	8,992		8,992		—		8,992		—
Liabilities
Deposits	$	8,341,717	$	8,337,145	$	7,960,870	$	376,275	$	—
FHLB advances	6,465		7,367		—		7,367		—
Repurchase agreements	40,933		40,987		—		40,987		—
Interest rate contracts	9,004		9,004		—		9,004		—

	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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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.

The following table sets forth the computation of basic and diluted earnings per share for the three and nine months ended September 30, 2017 and 2016:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2017		2016		2017		2016
	(in thousands except per share)
Basic EPS:
Net income	$	40,769	$	27,484	$	97,100	$	74,148
Less: Earnings allocated to participating securities:
Preferred shares	—		48		4		131
Nonvested restricted shares	558		378		1,325		953
Earnings allocated to common shareholders	$	40,211	$	27,058	$	95,771	$	73,064
Weighted average common shares outstanding	57,566		57,215		57,459		57,173
Basic earnings per common share	$	0.70	$	0.47	$	1.67	$	1.28
Diluted EPS:
Earnings allocated to common shareholders	$	40,211	$	27,058	$	95,771	$	73,064
Weighted average common shares outstanding	57,566		57,215		57,459		57,173
Dilutive effect of equity awards	5		10		6		10
Weighted average diluted common shares outstanding	57,571		57,225		57,465		57,183
Diluted earnings per common share	$	0.70	$	0.47	$	1.67	$	1.28
Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive	12		15		13		20

15. Subsequent Event

On November 1, 2017, the Company completed its previously announced acquisition of Pacific Continental Corporation ("Pacific Continental"), for total consideration of approximately $644.8 million. The Company acquired 100% of the voting equity interests of Pacific Continental. The primary reasons for the acquisition were to expand in the Eugene, Oregon market and improve branch network efficiencies in the Seattle and Portland markets. The operating results of the Company for the nine months ended September 30, 2017 do not include the operating results produced by Pacific Continental as the acquisition did not close until November 1, 2017. It is not practical to present other financial information related to the acquisition at this time because the fair value measurement of assets acquired and liabilities assumed has not been finalized.

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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 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 acquisition of Pacific Continental Corporation (“Pacific Continental”)), and infrastructure may not be realized;

• the ability to successfully integrate Pacific Continental, 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.

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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 and debit and credit cards. 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

Comparison of current quarter to prior year period

The Company reported net income for the third quarter of $40.8 million or $0.70 per diluted common share, compared to $27.5 million or $0.47 per diluted common share for the third quarter of 2016. Net interest income for the three months ended September 30, 2017 was $88.9 million, an increase of $3.4 million from the prior year period. The increase was a result of higher interest income on loans primarily due to higher loan volumes. Noninterest income for the current quarter was $37.1 million, an increase of $13.9 million from the prior year period. The increase was primarily due to the $14.0 million gain on the sale of the merchant card services portfolio.

The provision for loan and lease losses for the third quarter of 2017 was a net recapture of $648 thousand compared to a provision of $1.9 million during the third quarter of 2016. The provision recapture recorded in the third quarter of 2017 was due to the recording of a $175 thousand provision recapture on loans, excluding PCI loans, and a $473 thousand provision recapture related to PCI loans.

Total noninterest expense for the quarter ended September 30, 2017 was $67.5 million, an increase from $67.3 million for the third quarter of 2016. The increase from the prior year period was primarily due to due to higher compensation and benefits expense in the current quarter as well as $1.2 million higher acquisition-related expenses, partially offset by decreases in advertising and promotion and merchant processing expenses.

Comparison of current year-to-date to prior year period

Net interest income for the nine months ended September 30, 2017 was $261.8 million, an increase of $13.9 million from the prior year period. The increase was due to higher loan and securities volumes and lower market-driven premium amortization on securities, partially offset by lower incremental accretion income on loans. Noninterest income for the current period was $86.1 million, an increase of $20.3 million from the prior year period. The increase was due to the previously noted $14.0 million gain on the sale of the merchant card services portfolio, lower expense related to our FDIC loss-sharing agreements and higher other noninterest income.

The provision for loan and lease losses for the nine months ended September 30, 2017 was $5.3 million compared to a provision of $10.8 million for the first nine months of 2016. The $5.3 million provision was due to recording a provision of $6.8 million for loans, excluding PCI loans, and a provision recapture of $1.5 million related to PCI loans.

Total noninterest expense for the nine months ended September 30, 2017 was $205.4 million, a 5%increase from the prior year period. The increase from the prior year period was driven by increased compensation and employee benefits expense, a $2.4 million charge recorded in the current year related to our early termination of FDIC loss share agreements and higher acquisition-related expenses.

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 September 30,						Three Months Ended September 30,
	2017						2016
	Average Balances		Interest Earned / Paid		Average Rate		Average Balances		Interest Earned / Paid		Average Rate
	(dollars in thousands)
ASSETS
Loans, net (1)(2)	$	6,441,537	$	80,136	4.98	%	$	6,179,163	$	76,195	4.93	%
Taxable securities	1,784,407		8,718		1.95	%	1,870,466		8,988		1.92	%
Tax exempt securities (2)	451,828		4,181		3.70	%	480,627		4,306		3.58	%
Interest-earning deposits with banks	72,789		226		1.24	%	14,620		15		0.41	%
Total interest-earning assets	8,750,561		$	93,261	4.26	%	8,544,876		$	89,504	4.19	%
Other earning assets	173,611						155,663
Noninterest-earning assets	770,833						792,912
Total assets	$	9,695,005					$	9,493,451
LIABILITIES AND SHAREHOLDERS’ EQUITY
Certificates of deposit	$	382,299	$	92	0.10	%	$	417,887	$	124	0.12	%
Savings accounts	766,540		19		0.01	%	705,923		18		0.01	%
Interest-bearing demand	1,000,079		223		0.09	%	961,527		189		0.08	%
Money market accounts	2,051,662		749		0.15	%	2,033,450		492		0.10	%
Total interest-bearing deposits	4,200,580		1,083		0.10	%	4,118,787		823		0.08	%
Federal Home Loan Bank advances	33,687		163		1.94	%	96,931		229		0.95	%
Other borrowings	51,669		128		0.99	%	79,767		134		0.67	%
Total interest-bearing liabilities	4,285,936		$	1,374	0.13	%	4,295,485		$	1,186	0.11	%
Noninterest-bearing deposits	3,986,757						3,799,745
Other noninterest-bearing liabilities	98,518						119,633
Shareholders’ equity	1,323,794						1,278,588
Total liabilities & shareholders’ equity	$	9,695,005					$	9,493,451
Net interest income (tax equivalent)			$	91,887					$	88,318
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 $1.8 million and $1.4 million for the three month periods ended September 30, 2017 and 2016, respectively. The incremental accretion income on acquired loans was $2.9 million and $4.6 million for the three months ended September 30, 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 $1.5 million and $1.2 million for the three months ended September 30, 2017 and 2016, respectively. The tax equivalent yield adjustment to interest earned on tax exempt securities was $1.5 million for both the three month periods ended September 30, 2017 and 2016.

37

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:

	Nine Months Ended September 30,						Nine Months Ended September 30,
	2017						2016
	Average Balances		Interest Earned / Paid		Average Rate		Average Balances		Interest Earned / Paid		Average Rate
	(dollars in thousands)
ASSETS
Loans, net (1)(2)	$	6,322,629	$	232,680	4.91	%	$	6,002,656	$	220,445	4.90	%
Taxable securities	1,835,693		29,172		2.12	%	1,787,288		25,834		1.93	%
Tax exempt securities (2)	451,636		12,500		3.69	%	466,589		12,918		3.69	%
Interest-earning deposits with banks	31,748		268		1.13	%	23,106		81		0.47	%
Total interest-earning assets	8,641,706		$	274,620	4.24	%	8,279,639		$	259,278	4.18	%
Other earning assets	174,898						154,950
Noninterest-earning assets	772,865						790,877
Total assets	$	9,589,469					$	9,225,466
LIABILITIES AND SHAREHOLDERS’ EQUITY
Certificates of deposit	$	389,260	$	282	0.10	%	$	431,643	$	408	0.13	%
Savings accounts	753,577		57		0.01	%	691,379		53		0.01	%
Interest-bearing demand	985,625		574		0.08	%	946,437		541		0.08	%
Money market accounts	2,019,278		1,865		0.12	%	1,973,646		1,350		0.09	%
Total interest-bearing deposits	4,147,740		2,778		0.09	%	4,043,105		2,352		0.08	%
Federal Home Loan Bank advances	103,369		979		1.26	%	103,023		594		0.77	%
Other borrowings	54,577		383		0.94	%	82,403		407		0.66	%
Total interest-bearing liabilities	4,305,686		$	4,140	0.13	%	4,228,531		$	3,353	0.11	%
Noninterest-bearing deposits	3,889,065						3,619,994
Other noninterest-bearing liabilities	100,820						108,680
Shareholders’ equity	1,293,898						1,268,261
Total liabilities & shareholders’ equity	$	9,589,469					$	9,225,466
Net interest income (tax equivalent)			$	270,480					$	255,925
Net interest margin (tax equivalent)					4.17	%					4.12	%

__________

(1) Nonaccrual loans have been included in the table 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 $5.2 million and $3.6 million for the nine months ended September 30, 2017 and 2016, respectively. The incremental accretion income on acquired loans was $10.0 million and $13.7 million for the nine months ended September 30, 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 $4.3 million and $3.5 million for the nine months ended September 30, 2017 and 2016, respectively. The tax equivalent yield adjustment to interest earned on tax exempt securities was $4.4 million and $4.5 million for the nine months ended September 30, 2017 and 2016, respectively.

38

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 September 30, 2017 Compared to 2016 Increase (Decrease) Due to
	Volume			Rate			Total
	(in thousands)
Interest Income
Loans, net	$	3,259		$	682		$	3,941
Taxable securities	(419		)	149			(270		)
Tax exempt securities	(263		)	138			(125		)
Interest earning deposits with banks	142			69			211
Interest income	$	2,719		$	1,038		$	3,757
Interest Expense
Deposits:
Certificates of deposit	$	(10	)	$	(22	)	$	(32	)
Savings accounts	2			(1		)	1
Interest-bearing demand	8			26			34
Money market accounts	4			253			257
Total interest on deposits	4			256			260
Federal Home Loan Bank advances	(210		)	144			(66		)
Other borrowings	26			(32		)	(6		)
Interest expense	$	(180	)	$	368		$	188

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:

	Nine Months Ended September 30, 2017 Compared to 2016 Increase (Decrease) Due to
	Volume			Rate			Total
	(in thousands)
Interest Income
Loans, net	$	11,774		$	461		$	12,235
Taxable securities	715			2,623			3,338
Tax exempt securities	(414		)	(4		)	(418		)
Interest earning deposits with banks	39			148			187
Interest income	$	12,114		$	3,228		$	15,342
Interest Expense
Deposits:
Certificates of deposit	$	(38	)	$	(88	)	$	(126	)
Savings accounts	5			(1		)	4
Interest-bearing demand	23			10			33
Money market accounts	32			483			515
Total interest on deposits	22			404			426
Federal Home Loan Bank advances	2			383			385
Other borrowings	104			(128		)	(24		)
Interest expense	$	128		$	659		$	787

39

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 September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
	(dollars in thousands)
Incremental accretion income due to:
FDIC purchased credit impaired loans	$	972		$	1,816		$	3,842		$	4,773
Other acquired loans	1,903			2,749			6,207			8,896
Incremental accretion income	$	2,875		$	4,565		$	10,049		$	13,669
Net interest margin (tax equivalent)	4.20		%	4.13		%	4.17		%	4.12		%
Operating net interest margin(tax equivalent) (1)	4.15		%	4.03		%	4.11		%	4.02		%

__________

(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.

Comparison of current quarter to prior year period

Net interest income for the third quarter of 2017 was $88.9 million, up from $85.6 million for the same quarter in 2016. The increase was primarily due to higher loan interest income, driven principally by higher loan volumes, 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$205.7 million from the prior year period due to loan growth. The Company’s net interest margin (tax equivalent) increased to 4.20% in the third quarter of 2017, from 4.13% for the prior year period. This increase was due to higher loan volumes, partially offset by lower incremental accretion. The Company’s operating net interest margin (tax equivalent) (see footnote 1 in prior table) increased to 4.15% from 4.03% due to higher loan and security volumes.

Comparison of current year-to-date to prior year period

Net interest income for the nine months ended September 30, 2017 was $261.8 million, an increase of 6% from $247.9 million for the prior year period. The increase in net interest income was due to higher loan and securities volumes and lower market-driven premium amortization on securities, partially offset by lower incremental accretion income on loans. The Company’s net interest margin (tax equivalent) increased to 4.17% for the first nine months of 2017, from 4.12% for the prior year period. The increase in the Company’s net interest margin (tax equivalent) was driven by higher loan volumes and lower premium amortization on taxable securities, partially offset by lower accretion income on acquired loans. As shown in the table above, the Company recorded $10.0 million in total incremental accretion during the nine months ended September 30, 2017, a decrease of $3.6 million from the prior year period. The Company’s operating net interest margin (tax equivalent) for the nine months ended September 30, 2017increased to 4.11% from 4.02% also due to higher loan volumes and lower premium amortization on taxable securities (see footnote 1 in prior table).

Provision for Loan and Lease Losses

Comparison of current quarter to prior year period

During the third quarter of 2017, the Company recorded a $648 thousand net provision recapture compared to a $1.9 million provision expense during the third quarter of 2016. The $648 thousand net provision recapture for loan and lease losses recorded during the current quarter was due to provision recaptures of $473 thousand for PCI loans and $175 thousand for loans, excluding PCI loans. The $175 thousand net provision recapture for loans, excluding PCI loans, was due to a decrease in specific reserve driven by additional collateral being applied, partially offset by 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 second quarter of 2017. 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.

40

Comparison of current year-to-date to prior year period

The provision for loan and lease losses for the nine months ended September 30, 2017 was $5.3 million compared to $10.8 million during the same period in 2016. The $5.3 million provision expense for loans recorded for the current year-to-date period included a provision of $6.8 million for loans, excluding PCI loans and a provision recapture of $1.5 million related to PCI loans. The provision of $6.8 million related to loans, excluding PCI loans, was due to the combination of loan growth and net loan charge-offs experienced in the period. The $1.5 million in provision recapture for PCI loans was primarily due to the increase in the present value of expected future cash flows as remeasured during the current period, compared to the present value of expected future cash flows at the end of 2016, net of activity during the period. 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 September 30,										Nine Months Ended September 30,
	2017		2016			$ Change			% Change		2017			2016			$ Change			% Change
	(dollars in thousands)
Deposit account and treasury management fees	$	7,685	$	7,222		$	463		6	%	$	22,368		$	21,304		$	1,064		5	%
Card revenue	6,735		6,114			621			10	%	18,660			17,817			843			5	%
Financial services and trust revenue	2,645		2,746			(101		)	(4	)%	8,520			8,347			173			2	%
Loan revenue	3,154		2,949			205			7	%	9,736			8,013			1,723			22	%
Merchant processing revenue	—		2,352			(2,352		)	(100	)%	4,283			6,726			(2,443		)	(36	)%
Bank owned life insurance	1,290		1,073			217			20	%	4,003			3,459			544			16	%
Investment securities gains	—		572			(572		)	(100	)%	—			1,174			(1,174		)	(100	)%
Change in FDIC loss-sharing asset	—		(104		)	104			(100	)%	(447		)	(2,197		)	1,750			(80	)%
Gain on sale of merchant card services portfolio	14,000		—			14,000			—	%	14,000			—			14,000			—	%
Other	1,558		242			1,316			544	%	4,938			1,109			3,829			345	%
Total noninterest income	$	37,067	$	23,166		$	13,901		60	%	$	86,061		$	65,752		$	20,309		31	%

Comparison of current quarter to prior year period

Noninterest income was $37.1 million for the third quarter of 2017, compared to $23.2 million for the same period in 2016. The increase was primarily due to the $14.0 million gain on the sale of the merchant card services portfolio. As a result of that sale, we now share with the buyer in merchant services revenue and include such amounts in “Card revenue.” For the current quarter, this net revenue share was $438 thousand. Also contributing to the increase in noninterest income was higher other noninterest income, principally from a current quarter BOLI benefit of $1.0 million, with no such BOLI benefit in the prior year period.

Comparison of current year-to-date to prior year period

For the nine months ended September 30, 2017, noninterest income was $86.1 million compared to $65.8 million for the same period in 2016. The increase was due to the previously noted $14.0 million gain on the sale of the merchant card services portfolio, lower expense related to our FDIC loss-sharing agreements and higher other noninterest income. The lower expense recorded for the change in FDIC loss-sharing asset was due to lower amortization expense in the current year. For additional information on our FDIC loss-sharing agreements, see Note 7 to the Consolidated Financial Statements in “Item 1. Financial Statements (unaudited)” of this report. The increase in other noninterest income was principally from higher current period BOLI benefit of $3.0 million, with only $254 thousand BOLI benefit in the prior year period.

41

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 September 30,										Nine Months Ended September 30,
	2017		2016			$ Change			% Change		2017		2016			$ Change			% Change
	(dollars in thousands)
Compensation and employee benefits	$	39,983	$	38,476		$	1,507		4	%	$	119,201	$	112,086		$	7,115		6	%
All other noninterest expense:
Occupancy	8,085		8,219			(134		)	(2	)%	22,853		26,044			(3,191		)	(12	)%
Merchant processing expense	—		1,161			(1,161		)	(100	)%	2,196		3,312			(1,116		)	(34	)%
Advertising and promotion	969		1,993			(1,024		)	(51	)%	2,923		3,878			(955		)	(25	)%
Data processing	4,122		4,275			(153		)	(4	)%	13,071		12,350			721			6	%
Legal and professional services	2,880		2,264			616			27	%	9,196		5,366			3,830			71	%
Taxes, license and fees	1,505		1,491			14			1	%	3,494		4,079			(585		)	(14	)%
Regulatory premiums	782		776			6			1	%	2,299		2,985			(686		)	(23	)%
Net cost (benefit) of operation of other real estate owned	271		(249		)	520			(209	)%	422		(61		)	483			(792	)%
Amortization of intangibles	1,188		1,460			(272		)	(19	)%	3,786		4,526			(740		)	(16	)%
Other	7,752		7,398			354			5	%	25,949		21,563			4,386			20	%
Total all other noninterest expense	27,554		28,788			(1,234		)	(4	)%	86,189		84,042			2,147			3	%
Total noninterest expense	$	67,537	$	67,264		$	273		—	%	$	205,390	$	196,128		$	9,262		5	%

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				Nine Months Ended
	September 30,				September 30,
	2017		2016		2017		2016
	(in thousands)
Acquisition-related expenses:
Compensation and employee benefits	$	3	$	—	$	3	$	35
Occupancy	593		—		945		2,383
Advertising and promotion	184		—		201		—
Data processing	66		—		539		18
Legal and professional fees	157		—		1,587		—
Taxes, licenses and fees	—		—		3		—
Other	168		—		280		—
Total impact of acquisition-related expense to noninterest expense	$	1,171	$	—	$	3,558	$	2,436
Acquisition-related expenses by transaction:
Pacific Continental (1)	$	1,171	$	—	$	3,558	$	—
Intermountain	—		—		—		2,436
Total impact of acquisition-related expense to noninterest expense	$	1,171	$	—	$	3,558	$	2,436

__________

(1) The Company completed the acquisition of Pacific Continental on November 1, 2017. See Note 15 of the Consolidated Financial Statements in “Item 1. Financial Statements (unaudited)” of this report for further information regarding this acquisition.

42

Comparison of current quarter to prior year period

Total noninterest expense for the third quarter of 2017 was $67.5 million, an increase of $273 thousand from the prior year period. The increase was due to higher compensation and benefits expense in the current quarter as well as $1.2 million higher acquisition-related expenses, partially offset by decreases in advertising and promotion and merchant processing expenses. With respect to the latter, beginning July 1, 2017, the Company no longer directly incurs such costs.

Comparison of current year-to-date to prior year period

For the nine months ended September 30, 2017, noninterest expense was $205.4 million, an increase of $9.3 million, or 5% from $196.1 million a year earlier. In addition to the $2.4 million charge related to our FDIC loss share agreement termination, the increase from the prior year period was driven by higher compensation and employee benefits due to recognizing additional incentive expense from solid loan production, deposit growth and financial performance, higher stock compensation expense and salary increases. The increase in stock compensation expense related to the immediate vesting of certain restricted share awards. In addition, legal and professional fees were higher due to costs from our investment in a customer relationship management application, the search for certain executive level positions and acquisition-related expenses. Also contributing to the increased noninterest expense was higher miscellaneous other noninterest expense due to the recording of an additional $775 thousand for the allowance for unfunded commitments and letters of credit in the current year compared to a provision recapture of $25 thousand in the prior year period.

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

	Three Months Ended September 30,					Increase (Decrease) Amount			Nine Months Ended September 30,						Increase (Decrease) Amount
	2017		2016						2017			2016
	(in thousands)
Postage	$	517	$	499		$	18		$	1,577		$	1,630		$	(53	)
Software support and maintenance	1,386		1,231			155			3,957			3,500			457
Supplies	348		353			(5		)	1,268			1,064			204
Loan expenses	780		587			193			1,363			1,277			86
Dues and subscriptions	304		310			(6		)	1,109			927			182
Insurance	459		484			(25		)	1,370			1,441			(71		)
Card expenses	1,035		683			352			2,383			2,053			330
Travel and entertainment	826		874			(48		)	2,369			2,490			(121		)
Employee expenses	328		288			40			1,067			943			124
Sponsorships and charitable contributions	378		593			(215		)	1,640			1,737			(97		)
Directors fees	189		181			8			750			562			188
Correspondent bank processing fees	129		142			(13		)	397			417			(20		)
Investor relations	42		25			17			228			189			39
Other personal property owned	—		(5		)	5			(2		)	(7		)	5
FDIC clawback expense (recovery)	—		29			(29		)	(54		)	308			(362		)
Fraud losses	156		209			(53		)	698			376			322
Termination of FDIC loss share agreements charge	—		—			—			2,409			—			2,409
Miscellaneous	875		915			(40		)	3,420			2,656			764
Total other noninterest expense	$	7,752	$	7,398		$	354		$	25,949		$	21,563		$	4,386

43

Income Taxes

We recorded an income tax provision of $18.3 million for the third quarter of 2017, compared to a provision of $12.1 million for the same period in 2016, with effective tax rates of 31% for both periods. For the nine months ended September 30, 2017 and 2016, we recorded income tax provisions of $40.0 million and $32.6 million, respectively, with effective tax rates of 29% for the current year and 31% for the prior year period. 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 year 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 $9.81 billion at September 30, 2017, an increase of $305.0 million from $9.51 billion at December 31, 2016. Cash and cash equivalents grew $98.5 million. Loan growth of $298.6 million during the current year was driven by strong loan originations. Securities available for sale were $2.21 billion at September 30, 2017, a decrease of $70.7 million from December 31, 2016. Total liabilities were $8.49 billion as of September 30, 2017, an increase of $227.6 million from $8.26 billion at December 31, 2016. The increase was primarily due to increased deposits.

Investment Securities Available for Sale

At September 30, 2017, the Company held investment securities totaling $2.21 billion compared to $2.28 billion at December 31, 2016. The decrease in the investment securities portfolio from year-end is due to $200.5 million in principal payments and maturities and $14.1 million in premium amortization offset by $130.9 million in purchases and a $13.0 million decrease in net unrealized loss of securities in the portfolio. The average duration of our investment portfolio was approximately 3 years and 8 months at September 30, 2017. This duration takes into account calls, where appropriate, and consensus prepayment speeds.

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 September 30, 2017, the market value of securities available for sale had a net unrealized loss of $7.5 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 September 30, 2017, the Company had $1.31 billion of investment securities with gross unrealized losses of $21.1 million; however, we did not consider these investment securities to be other-than-temporarily impaired.

44

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

	September 30, 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	$	1,377,417	$	1,465,732
State and municipal securities	483,488		475,060
U.S. government and government-sponsored enterprise securities	341,604		331,902
U.S. government securities	250		800
Other securities	5,114		5,083
Total	$	2,207,873	$	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 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.

45

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:

	September 30, 2017			% of Total		December 31, 2016			% of Total
	(dollars in thousands)
Commercial business	$	2,735,206		42.0	%	$	2,551,054		41.1	%
Real estate:
One-to-four family residential	176,487			2.7	%	170,331			2.7	%
Commercial and multifamily residential	2,825,794			43.3	%	2,719,830			43.7	%
Total real estate	3,002,281			46.0	%	2,890,161			46.4	%
Real estate construction:
One-to-four family residential	145,419			2.2	%	121,887			2.0	%
Commercial and multifamily residential	213,939			3.3	%	209,118			3.4	%
Total real estate construction	359,358			5.5	%	331,005			5.4	%
Consumer	323,913			5.0	%	329,261			5.3	%
Purchased credit impaired	120,477			1.9	%	145,660			2.3	%
Subtotal	6,541,235			100.4	%	6,247,141			100.5	%
Less: Net unearned income	(29,229		)	(0.4	)%	(33,718		)	(0.5	)%
Loans, net of unearned income (before Allowance for Loan and Lease Losses)	$	6,512,006		100.0	%	$	6,213,423		100.0	%
Loans held for sale	$	7,802				$	5,846

Total loans increased$298.6 million from year-end 2016. The increase in loans was the result of strong loan originations during the first nine months of the year, partially offset 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 $29.2 million in unearned income recorded at September 30, 2017 was comprised of $13.9 million in net purchase discounts and $15.3 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.

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

	September 30, 2017			December 31, 2016
Acquisition:	(in thousands)
Intermountain	4,827			6,599
West Coast	9,333			13,957
Other	(211		)	(315		)
Total net discount at period end	$	13,949		$	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.

46

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.

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

	September 30, 2017			December 31, 2016
	(in thousands)
Nonperforming assets
Nonaccrual loans:
Commercial business	$	25,213		$	11,555
Real estate:
One-to-four family residential	816			568
Commercial and multifamily residential	9,143			11,187
Total real estate	9,959			11,755
Real estate construction:
One-to-four family residential	239			563
Consumer	4,906			3,883
Total nonaccrual loans	40,317			27,756
Other real estate owned and other personal property owned	3,682			5,998
Total nonperforming assets	$	43,999		$	33,754
Loans, net of unearned income	$	6,512,006		$	6,213,423
Total assets	$	9,814,578		$	9,509,607
Nonperforming loans to period end loans	0.62		%	0.45		%
Nonperforming assets to period end assets	0.45		%	0.35		%

At September 30, 2017, nonperforming assets were $44.0 million, compared to $33.8 million at December 31, 2016. Nonperforming assets increased$10.2 million during the nine months ended September 30, 2017. This increase was due to a $12.6 million increase innonaccrual loans, partially offset by a decrease in OREO.

47

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

	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
	(in thousands)
Balance, beginning of period	$	4,058		$	10,613		$	5,998		$	13,738
Transfers in	74			891			74			1,202
Valuation adjustments	(138		)	(14		)	(364		)	(290		)
Proceeds from sale of OREO property	(182		)	(2,569		)	(1,901		)	(5,845		)
Gain (loss) on sale of OREO, net	(130		)	73			(125		)	189
Balance, end of period	$	3,682		$	8,994		$	3,682		$	8,994

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.

At September 30, 2017, our allowance was $71.6 million, or 1.10% 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 $70.3 million or 1.12% of total loans (excluding loans held for sale) at September 30, 2016.

48

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

	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
	(in thousands)
Beginning balance	$	72,984		$	69,304		$	70,043		$	68,172
Charge-offs:
Commercial business	(1,362		)	(2,159		)	(6,089		)	(8,873		)
One-to-four family residential	—			—			(460		)	(35		)
Commercial and multifamily residential	—			—			—			(26		)
One-to-four family residential construction	—			—			(14		)	—
Consumer	(263		)	(383		)	(1,156		)	(983		)
Purchased credit impaired	(1,633		)	(2,062		)	(5,372		)	(7,826		)
Total charge-offs	(3,258		)	(4,604		)	(13,091		)	(17,743		)
Recoveries:
Commercial business	688			854			3,997			2,269
One-to-four family residential	40			81			380			142
Commercial and multifamily residential	58			20			263			219
One-to-four family residential construction	20			21			107			280
Commercial and multifamily residential construction	—			107			—			109
Consumer	343			399			876			765
Purchased credit impaired	1,389			2,216			3,737			5,291
Total recoveries	2,538			3,698			9,360			9,075
Net charge-offs	(720		)	(906		)	(3,731		)	(8,668		)
Provision (recapture) for loan and lease losses	(648		)	1,866			5,304			10,760
Ending balance	$	71,616		$	70,264		$	71,616		$	70,264
Total loans, net at end of period, excluding loans held of sale	$	6,512,006		$	6,259,757		$	6,512,006		$	6,259,757
Allowance for loan and lease losses to period-end loans	1.10		%	1.12		%	1.10		%	1.12		%
Allowance for unfunded commitments and letters of credit
Beginning balance	$	3,555		$	2,780		$	2,705		$	2,930
Net changes in the allowance for unfunded commitments and letters of credit	(75		)	125			775			(25		)
Ending balance	$	3,480		$	2,905		$	3,480		$	2,905

49

FDIC Loss-sharing Asset

During the second quarter of 2017, the Bank entered into an agreement with the FDIC to terminate all loss-sharing agreements ahead of their contractual maturities. These loss-sharing agreements were entered into in 2010 and 2011 in conjunction with our acquisitions of (1) Columbia River Bank in January 2010, (2) American Marine Bank in January 2010, (3) Summit Bank in May 2011 and (4) First Heritage Bank in May 2011. Under the early termination, all rights and obligations of the Company and the FDIC have been resolved and completed. For additional information on the early termination of the FDIC loss-sharing agreements, see Note 7 to the Consolidated Financial Statements in “Item 1. Financial Statements (unaudited)” of this report.

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$249.9 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 September 30, 2017, CDARS^® deposits and brokered money market deposits were $258.1 million, or 3% of total deposits, compared to $230.4 million at year-end 2016. The brokered deposits have varied maturities.

50

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

	September 30, 2017				December 31, 2016
	Balance		% of Total		Balance		% of Total
	(dollars in thousands)
Core deposits:
Demand and other noninterest-bearing	$	4,119,950	49.4	%	$	3,944,495	48.9	%
Interest-bearing demand	1,009,378		12.1	%	985,293		12.2	%
Money market	1,821,262		21.8	%	1,791,283		22.2	%
Savings	772,858		9.3	%	723,667		9.0	%
Certificates of deposit, less than $250,000	276,051		3.3	%	304,830		3.8	%
Total core deposits	7,999,499		95.9	%	7,749,568		96.1	%
Certificates of deposit, $250,000 or more	84,105		1.0	%	79,424		1.0	%
Certificates of deposit insured by CDARS®	20,690		0.2	%	22,039		0.3	%
Brokered money market accounts	237,421		2.9	%	208,348		2.6	%
Subtotal	8,341,715		100.0	%	8,059,379		100.0	%
Premium resulting from acquisition date fair value adjustment	2				36
Total deposits	$	8,341,717			$	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. We had FHLB advances of $6.5 million at both September 30, 2017 and 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 September 30, 2017 and December 31, 2016, we had deposit customer sweep-related repurchase agreements of $15.9 million and $55.8 million, respectively, which mature on a daily basis as well as 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 September 30, 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 September 30, 2017 was $1.33 billion, an increase from $1.25 billion at December 31, 2016. Shareholders’ equity was 14% of total period-end assets at September 30, 2017 and 13% at 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 September 30, 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 September 30, 2017 and December 31, 2016.

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The following table presents the capital ratios and the capital conservation buffer, as applicable, for the Company and its banking subsidiary at September 30, 2017 and December 31, 2016:

	Company				Columbia Bank
	September 30, 2017		December 31, 2016		September 30, 2017		December 31, 2016
Common equity tier 1 (CET1) risk-based capital ratio	12.2025	%	11.6450	%	12.0166	%	11.5051	%
Tier 1 risk-based capital ratio	12.2025	%	11.6646	%	12.0166	%	11.5051	%
Total risk-based capital ratio	13.1788	%	12.6347	%	12.9936	%	12.4756	%
Leverage ratio	10.0883	%	9.5526	%	9.9353	%	9.4275	%
Capital conservation buffer	5.1788	%	4.6347	%	4.9936	%	4.4756	%

Stock Repurchase Program

On September 27, 2017, the Board of Directors approved a stock repurchase program. The program authorizes the Company to repurchase up to 2.9 million shares of our outstanding common stock. 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.

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 September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
Operating net interest margin non-GAAP reconciliation:	(dollars in thousands)
Net interest income (tax equivalent) (1)	$	91,887		$	88,318		$	270,480		$	255,925
Adjustments to arrive at operating net interest income (tax equivalent):
Incremental accretion income on FDIC purchased credit impaired loans	(972		)	(1,816		)	(3,842		)	(4,773		)
Incremental accretion income on other acquired loans	(1,903		)	(2,749		)	(6,207		)	(8,896		)
Premium amortization on acquired securities	1,527			1,991			4,658			6,390
Interest reversals on nonaccrual loans	311			266			1,323			826
Operating net interest income (tax equivalent) (1)	$	90,850		$	86,010		$	266,412		$	249,472
Average interest earning assets	$	8,750,561		$	8,544,876		$	8,641,706		$	8,279,639
Net interest margin (tax equivalent) (1)	4.20		%	4.13		%	4.17		%	4.12		%
Operating net interest margin (tax equivalent) (1)	4.15		%	4.03		%	4.11		%	4.02		%

__________

(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 $3.0 million and $2.7 million for the three months ended September 30, 2017 and 2016, respectively, and an addition to net interest income of $8.7 million and $8.0 million for the nine months ended September 30, 2017 and 2016.

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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 September 30, 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.

53

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) Not applicable

(b) Not applicable

(c) The following table provides information about repurchases of common stock by the Company during the quarter ended September 30, 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)
7/1/2017 - 7/31/2017	246	$	39.26	—	2,900,000
8/1/2017 - 8/31/2017	—	—		—	2,900,000
9/1/2017 - 9/30/2017	533	40.03		—	2,900,000
	779	$	39.79	—

(1) Common shares repurchased by the Company during the quarter consisted of cancellation of 779 shares of common stock to pay the shareholders’ withholding taxes.

(2) On June 22, 2016, the Board of Directors approved a stock repurchase program authorizing the Company to repurchase up to 2.9 million shares of its outstanding common stock. The plan was effective on August 24, 2016 and expired on August 24, 2017. On September 27, 2017 the Board approved a new repurchase plan, which 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.

54

Item 6. EXHIBITS

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 September 30, 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

55

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:	November 7, 2017	By	/s/ HADLEY S. ROBBINS
			Hadley S. Robbins
			President and Chief Executive Officer (Principal Executive Officer)
Date:	November 7, 2017	By	/s/ CLINT E. STEIN
			Clint E. Stein
			Executive Vice President, Chief Operating Officer and Chief Financial Officer (Principal Financial Officer)
Date:	November 7, 2017	By	/s/ BARRY S. RAY
			Barry S. Ray
			Senior Vice President and Chief Accounting Officer (Principal Accounting Officer)

56

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
President and

Chief Executive Officer

Date: November 7, 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, Chief Operating Officer and
Chief Financial Officer

Date: November 7, 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 September 30, 2017 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), we, Hadley S. Robbins, President and Chief Executive Officer, and Clint E. Stein, Executive Vice President, Chief Operating Officer 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

President and

Chief Executive Officer

Columbia Banking System, Inc.

/s/ CLINT E. STEIN

Clint E. Stein

Executive Vice President,

Chief Operating Officer and

Chief Financial Officer

Columbia Banking System, Inc.

Dated: November 7, 2017

XML

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Oct. 31, 2017
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q3
Entity Registrant Name	COLUMBIA BANKING SYSTEM INC
Entity Central Index Key	0000887343
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		58,373,165

XML

Consolidated Balance Sheets - USD ($) shares in Thousands, $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
ASSETS
Cash and due from banks	$ 186,116	$ 193,038
Interest-earning deposits with banks	136,578	31,200
Total cash and cash equivalents	322,694	224,238
Securities available for sale at fair value (amortized cost of $2,215,335 and $2,299,037, respectively)	2,207,873	2,278,577
Federal Home Loan Bank stock at cost	10,240	10,240
Loans held for sale	7,802	5,846
Loans, net of unearned income of ($29,229) and ($33,718), respectively	6,512,006	6,213,423
Less: allowance for loan and lease losses	71,616	70,043
Loans, net	6,440,390	6,143,380
FDIC loss-sharing asset	0	3,535
Interest receivable	36,163	30,074
Premises and equipment, net	143,351	150,342
Other real estate owned	3,682	5,998
Goodwill	382,762	382,762
Other intangible assets, net	13,845	17,631
Other assets	245,776	256,984
Total assets	9,814,578	9,509,607
LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest-bearing	4,119,950	3,944,495
Interest-bearing	4,221,767	4,114,920
Total deposits	8,341,717	8,059,415
Federal Home Loan Bank advances	6,465	6,493
Securities sold under agreements to repurchase	40,933	80,822
Other liabilities	97,035	111,865
Total liabilities	8,486,150	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	58,376	58,042
Common Stock (no par value)	$ 1,003,887	$ 995,837
Retained earnings	330,474	271,957
Accumulated other comprehensive loss	(5,933)	(18,999)
Total shareholders’ equity	1,328,428	1,251,012
Total liabilities and shareholders’ equity	$ 9,814,578	$ 9,509,607

XML

Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Securities available-for-sale, amortized cost	$ 2,215,335	$ 2,299,037
Less: unearned income on loans	$ (29,229)	$ (33,718)
Common stock, par value	$ 0	$ 0
Authorized shares	115,000	115,000
Common stock, shares outstanding	58,376	58,042

XML

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Interest Income
Loans	$ 78,641	$ 74,956	$ 228,340	$ 216,923
Taxable securities	8,718	8,988	29,172	25,834
Tax-exempt securities	2,718	2,799	8,125	8,397
Deposits in banks	226	15	268	81
Total interest income	90,303	86,758	265,905	251,235
Interest Expense
Deposits	1,083	823	2,778	2,352
Federal Home Loan Bank advances	163	229	979	594
Other borrowings	128	134	383	407
Total interest expense	1,374	1,186	4,140	3,353
Net Interest Income	88,929	85,572	261,765	247,882
Provision (recapture) for loan and lease losses	(648)	1,866	5,304	10,760
Net interest income after provision (recapture) for loan and lease losses	89,577	83,706	256,461	237,122
Noninterest Income
Deposit account and treasury management fees	7,685	7,222	22,368	21,304
Card revenue	6,735	6,114	18,660	17,817
Financial services and trust revenue	2,645	2,746	8,520	8,347
Loan revenue	3,154	2,949	9,736	8,013
Merchant Discount Fees	0	2,352	4,283	6,726
Bank owned life insurance	1,290	1,073	4,003	3,459
Investment securities gains	0	572	0	1,174
Change in FDIC loss-sharing asset	0	(104)	(447)	(2,197)
Gain on sale of merchant card services portfolio	14,000	0	14,000	0
Other	1,558	242	4,938	1,109
Total noninterest income	37,067	23,166	86,061	65,752
Noninterest Expense
Compensation and employee benefits	39,983	38,476	119,201	112,086
Occupancy	8,085	8,219	22,853	26,044
Merchant processing expense	0	1,161	2,196	3,312
Advertising and promotion	969	1,993	2,923	3,878
Data processing	4,122	4,275	13,071	12,350
Legal and professional fees	2,880	2,264	9,196	5,366
Taxes, licenses and fees	1,505	1,491	3,494	4,079
Regulatory premiums	782	776	2,299	2,985
Net cost (benefit) of operation of other real estate owned	271	(249)	422	(61)
Amortization of intangibles	1,188	1,460	3,786	4,526
Other	7,752	7,398	25,949	21,563
Total noninterest expense	67,537	67,264	205,390	196,128
Income before income taxes	59,107	39,608	137,132	106,746
Income tax provision	18,338	12,124	40,032	32,598
Net Income	$ 40,769	$ 27,484	$ 97,100	$ 74,148
Earnings per common share
Basic ($ per share)	$ 0.70	$ 0.47	$ 1.67	$ 1.28
Diluted ($ per share)	0.70	0.47	1.67	1.28
Dividends paid per common share	$ 0.22	$ 0.39	$ 0.66	$ 1.14
Weighted average number of common shares outstanding	57,566	57,215	57,459	57,173
Weighted average number of diluted common shares outstanding	57,571	57,225	57,465	57,183

XML

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net income		$ 40,769	$ 27,484	$ 97,100	$ 74,148
Unrealized gain from securities:
Net unrealized holding loss from available for sale securities arising during the period		549	(4,049)	8,284	23,229
Reclassification adjustment of net gain from sale of available for sale securities included in income		0	(364)	0	(748)
Net unrealized gain from securities, net of reclassification adjustment		549	(4,413)	8,284	22,481
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		46	107	178	319
Pension plan liability adjustment, net		46	107	4,782	319
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	[1]	595	(4,306)	13,066	22,800
Total comprehensive income		$ 41,364	$ 23,178	$ 110,166	$ 96,948

[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		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net unrealized holding gain (loss) from available for sale securities arising during the period, tax	$ (312)	$ 2,305	$ (4,716)	$ (13,225)
Reclassification adjustment of net gain from sale of available for sale securities included in income, tax	0	208	0	426
Net unrealized loss from unfunded defined benefit plan liability arising during the period, tax	0	0	(2,622)	0
Less: amortization of unrecognized net actuarial loss included in net periodic pension cost, tax	$ (26)	$ (60)	$ (101)	$ (182)

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	74,148		74,148
Other comprehensive income	22,800			22,800
Issuance of common stock - stock option and other plans, value	1,304	$ 1,304
Issuance of common stock - stock option and other plans, shares		47,000
Issuance of common stock - restricted stock awards, net of cancelled awards, value	3,626	$ 3,626
Issuance of common stock - restricted stock awards, net of cancelled awards, shares		310,000
Stock Repurchased and Retired During Period, Value	(1,113)	$ (1,113)
Stock Repurchased During Period, Shares		(38,000)
Dividends, Preferred Stock, Cash	(117)		(117)
Cash dividends paid on common stock	(66,041)		(66,041)
Balance, value at Sep. 30, 2016	1,276,735	$ 994,098	263,915	16,505	$ 2,217
Balance, shares at Sep. 30, 2016		58,043,000			9,000
Cumulative Effect of New Accounting Principle in Period of Adoption | Accounting Standards Update 2016-09 [Member]	67	$ 184	(117)
Balance, value at Dec. 31, 2016	1,251,012	$ 995,837	271,957	(18,999)	$ 2,217
Balance, shares at Dec. 31, 2016		58,042,000			8,782
Net income	97,100		97,100
Other comprehensive income	13,066			13,066
Issuance of common stock - stock option and other plans, value	1,980	$ 1,980
Issuance of common stock - stock option and other plans, shares		49,000
Issuance of common stock - restricted stock awards, net of cancelled awards, value	5,915	$ 5,915
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		238,000
Stock Repurchased and Retired During Period, Value	(2,246)	$ (2,246)
Stock Repurchased During Period, Shares		(55,000)
Cash dividends paid on common stock	(38,466)		(38,466)
Balance, value at Sep. 30, 2017	$ 1,328,428	$ 1,003,887	$ 330,474	$ (5,933)	$ 0
Balance, shares at Sep. 30, 2017		58,376,000			0

XML

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
FDIC loss-sharing agreement early termination, pretax loss	$ 2,409	$ 0
Cash Flows From Operating Activities
Net income	97,100	74,148
Adjustments to reconcile net income to net cash provided by operating activities
Provision for loan and lease losses	5,304	10,760
Stock-based compensation expense	5,915	3,626
Depreciation, amortization and accretion	21,483	27,796
Investment securities gains	0	1,174
Net realized (gain) loss on sale of premises and equipment, loans held for investment and other assets	(189)	186
Net realized loss on sale and valuation adjustments of other real estate owned	489	101
Originations of loans held for sale	99,130	76,645
Proceeds from sales of loans held for sale	97,174	77,793
Net change in:
Interest receivable	(6,089)	(3,729)
Interest payable	(21)	(84)
Other assets	3,359	(7,714)
Other liabilities	(2,624)	13,416
Net cash provided by operating activities	111,180	118,480
Gain on sale of merchant card services portfolio	(14,000)	0
Cash Flows From Investing Activities
Loans originated and acquired, net of principal collected	(304,831)	(450,914)
Purchases of securities available for sale	(130,906)	(502,602)
Purchases of premises and equipment	(4,380)	(2,705)
Payments to Acquire Federal Home Loan Bank Stock	(92,040)	(57,799)
Proceeds from FDIC for reimbursement on loss-sharing asset	26	878
Proceeds from sales of securities available for sale	0	120,800
Proceeds from principal repayments and maturities of securities available for sale	200,470	199,677
Proceeds from Sales of Assets, Investing Activities	12,157	7,391
Proceeds from sale of merchant card services portfolio	14,000	0
Proceeds from Sale of Federal Home Loan Bank Stock	92,040	57,881
Proceeds from sales of other real estate and other personal property owned	1,901	5,845
Payment to FDIC to terminate loss-sharing agreements	4,666	0
Payments to FDIC related to loss-sharing asset	(210)	(855)
Net cash used in investing activities	(216,439)	(622,403)
Cash Flows From Financing Activities
Net increase in deposits	282,336	619,162
Net decrease in sweep repurchase agreements	(39,889)	(30,510)
Proceeds from Federal Home Loan Bank advances	2,301,000	1,347,000
Federal Reserve Bank borrowings	10	10
Proceeds from exercise of stock options	1,980	1,304
Repayment of Federal Home Loan Bank advances	(2,301,000)	(1,349,000)
Repayment of Federal Reserve Bank borrowings	10	10
Payment of common stock dividends	(38,466)	(66,041)
Preferred stock dividends	0	(117)
Purchase and retirement of common stock	2,246	1,113
Net cash provided by financing activities	203,715	520,685
Increase in cash and cash equivalents	98,456	16,762
Cash and cash equivalents at beginning of period	224,238	175,302
Cash and cash equivalents at end of period	322,694	192,064
Supplemental Information:
Cash paid for interest	4,161	3,437
Cash paid for income tax	37,701	20,825
Non-cash investing and financing activities
Loans transferred to other real estate owned	$ 74	$ 1,202

XML

Basis of Presentation and Significant Accounting Policies

9 Months Ended

Sep. 30, 2017

Basis of Presentation And Significant Accounting Policies

Basis of Presentation and Significant Accounting Policies

Basis of Presentation, Significant Accounting Policies and Recent Developments

Basis of Presentation

The interim unaudited Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information and with instructions to Form 10-Q and Article 10 of Regulation S-X. The Consolidated Financial Statements include the accounts of Columbia Banking System, Inc. (“we”, “our”, “Columbia” or the “Company”) and its subsidiaries, including its wholly owned banking subsidiary Columbia State Bank (“Columbia Bank” or the “Bank”) and Columbia Trust Company (“Columbia Trust”). All intercompany transactions and accounts have been eliminated in consolidation. In the opinion of management, all adjustments (consisting only of normal recurring adjustments) considered necessary for a fair statement of the results for the interim periods presented have been included. The results of operations for the nine months ended September 30, 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.

Recent Developments

In July 2017, we entered into an asset purchase agreement (the “Agreement”) with a third-party by which we sold our merchant card services portfolio. In addition, we transitioned our delivery of those services from in-house to an outsourced model to better serve our business clients via a broad selection of competitive, best-in-class payment processing solutions. The carrying amount of both assets and liabilities subject to the Agreement was zero. In the current quarter, we recorded a $14.0 million gain on sale of the merchant card services portfolio. Under the new business model, we share with the buyer in net merchant services revenue and no longer directly incur merchant processing expenses. Our net revenue share from merchant services is presented in “Card Revenue” in the Consolidated Statements of Income. For the third quarter of 2017, that net revenue share was $438 thousand.

XML

Accounting Pronouncements Recently Issued

9 Months Ended

Sep. 30, 2017

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

Accounting Pronouncements Recently Issued

Accounting Pronouncements Recently Issued

In May 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-09, Scope of Modification Accounting. The amendments in this ASU provide guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting. The amendments in ASU 2017-09 are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. Early adoption is permitted. The adoption of ASU 2017-09 is not expected to have a material impact on the Company’s consolidated financial statements.

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

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

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

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

In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting. The amendments included in this ASU simplify several aspects of the accounting for employee share-based payment transactions including the accounting for income taxes, forfeitures and statutory tax withholding requirements, as well as classification in the statement of cash flows. The Company adopted the amendments of ASU 2016-09 during the first quarter of 2017. Adoption of amended forfeiture guidance resulted in an opening period adjustment decreasing retained earnings $117 thousand and increasing common stock $184 thousand. Adoption of the amended excess tax benefit guidance resulted in an income tax benefit of $22 thousand for the three months ended September 30, 2017 and an income tax benefit of $1.3 million or $0.02 per diluted common share for the nine months ended September 30, 2017.

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

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers. The guidance in this update will replace most existing revenue recognition guidance in GAAP when it becomes effective. For public companies, this update was to be effective for interim and annual periods beginning after December 15, 2016. However, in August 2015, the FASB issued ASU 2015-14, which delayed the effective date of ASU 2014-09 by one year and permits companies to voluntarily adopt the new standard as of the original effective date. The FASB subsequently issued ASU 2016-08, ASU 2016-10, ASU 2016-12 and ASU 2017-13 to provide implementation guidance and practical expedients related to ASU 2014-09. The Company’s revenue is comprised of interest income on financial assets, which is excluded from the scope of this new guidance, and non-interest income. The adoption of ASU 2017-04 is not expected to have a material impact on the Company’s consolidated financial statements.

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Securities

9 Months Ended

Sep. 30, 2017

Available-for-sale Securities [Abstract]

Securities

Securities

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

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
September 30, 2017
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	1,391,636	$	3,143	$	(17,362	)	$	1,377,417
State and municipal securities	476,702		9,047		(2,261		)	483,488
U.S. government agency and government-sponsored enterprise securities	341,462		1,372		(1,230		)	341,604
U.S. government securities	251		—		(1		)	250
Other securities	5,284		82		(252		)	5,114
Total	$	2,215,335	$	13,644	$	(21,106	)	$	2,207,873
December 31, 2016
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	1,486,690	$	2,760	$	(23,718	)	$	1,465,732
State and municipal securities	473,914		6,343		(5,197		)	475,060
U.S. government agency and government-sponsored enterprise securities	332,348		1,065		(1,511		)	331,902
U.S. government securities	801		—		(1		)	800
Other securities	5,284		63		(264		)	5,083
Total	$	2,299,037	$	10,231	$	(30,691	)	$	2,278,577

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

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2017		2016		2017		2016
	(in thousands)
Proceeds from sales of available for sale securities	$	—	$	37,390	$	—	$	120,800
Gross realized gains	$	—	$	572	$	—	$	1,174
Gross realized losses	—		—		—		—
Net realized gains	$	—	$	572	$	—	$	1,174

The scheduled contractual maturities of investment securities available for sale at September 30, 2017 are presented as follows:

	September 30, 2017
	Amortized Cost		Fair Value
	(in thousands)
Due within one year	$	108,477	$	108,462
Due after one year through five years	506,439		509,784
Due after five years through ten years	672,288		671,188
Due after ten years	922,847		913,325
Other securities with no stated maturity	5,284		5,114
Total investment securities available-for-sale	$	2,215,335	$	2,207,873

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

	September 30, 2017
	(in thousands)
Washington and Oregon State to secure public deposits	$	242,188
Federal Reserve Bank to secure borrowings	54,723
Other securities pledged	122,392
Total securities pledged as collateral	$	419,303

The following table shows the gross unrealized losses and fair value of the Company’s investments with unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at September 30, 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)
September 30, 2017
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	537,162	$	(4,765	)	$	456,330	$	(12,597	)	$	993,492	$	(17,362	)
State and municipal securities	75,499		(700		)	45,328		(1,561		)	120,827		(2,261		)
U.S. government agency and government-sponsored enterprise securities	173,027		(665		)	21,517		(565		)	194,544		(1,230		)
U.S. government securities	250		(1		)	—		—			250		(1		)
Other securities	2,278		(36		)	2,740		(216		)	5,018		(252		)
Total	$	788,216	$	(6,167	)	$	525,915	$	(14,939	)	$	1,314,131	$	(21,106	)
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 September 30, 2017, there were 168 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations securities in an unrealized loss position, of which 84 were in a continuous loss position for 12 months or more. The decline in fair value is attributable to changes in interest rates relative to where these investments fall within the yield curve and their individual characteristics. Because the Company does not intend to sell these securities nor does the Company consider it more likely than not that it will be required to sell these securities before the recovery of amortized cost basis, which may be upon maturity, the Company does not consider these investments to be other-than-temporarily impaired at September 30, 2017.

At September 30, 2017, there were 107 state and municipal government securities in an unrealized loss position, of which 40 were in a continuous loss position for 12 months or more. The unrealized losses on state and municipal securities were caused by interest rate changes or widening of market spreads subsequent to the purchase of the individual securities. Management monitors published credit ratings of these securities for adverse changes. As of September 30, 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 September 30, 2017.

At September 30, 2017, there were 22 U.S. government agency and government-sponsored enterprise securities in an unrealized loss position, of which five 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 September 30, 2017.

At September 30, 2017, there was one U.S. government security in an unrealized loss position, which was not in a continuous loss position for 12 months or more. The decline in fair value is attributable to changes in interest rates relative to where this investment falls within the yield curve and its individual characteristics. Because the Company does not currently intend to sell this security nor does the Company consider it more likely than not that it will be required to sell this security before the recovery of amortized cost basis, which may be upon maturity, the Company does not consider this investment to be other-than-temporarily impaired at September 30, 2017.

At September 30, 2017, there were two other securities in an unrealized loss position, of which one was in a continuous unrealized loss position for 12 months or more. The decline in fair value is attributable to changes in interest rates and the additional risk premium investors are demanding for investment securities with these characteristics. The Company does not consider these investments to be other-than-temporarily impaired at September 30, 2017 as it has the intent and ability to hold these investments for sufficient time to allow for recovery in the market value.

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Loans

9 Months Ended

Sep. 30, 2017

Loans Receivable, Net [Abstract]

Loans

Loans

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

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

	September 30, 2017									December 31, 2016
	Loans, excluding PCI loans			PCI Loans			Total			Loans, excluding PCI loans			PCI Loans			Total
	(in thousands)
Commercial business	$	2,735,206		$	13,662		$	2,748,868		$	2,551,054		$	20,185		$	2,571,239
Real estate:
One-to-four family residential	176,487			14,325			190,812			170,331			17,862			188,193
Commercial and multifamily residential	2,825,794			79,336			2,905,130			2,719,830			89,231			2,809,061
Total real estate	3,002,281			93,661			3,095,942			2,890,161			107,093			2,997,254
Real estate construction:
One-to-four family residential	145,419			377			145,796			121,887			832			122,719
Commercial and multifamily residential	213,939			958			214,897			209,118			1,565			210,683
Total real estate construction	359,358			1,335			360,693			331,005			2,397			333,402
Consumer	323,913			11,819			335,732			329,261			15,985			345,246
Less: Net unearned income	(29,229		)	—			(29,229		)	(33,718		)	—			(33,718		)
Total loans, net of unearned income	6,391,529			120,477			6,512,006			6,067,763			145,660			6,213,423
Less: Allowance for loan and lease losses	(64,272		)	(7,344		)	(71,616		)	(59,528		)	(10,515		)	(70,043		)
Total loans, net	$	6,327,257		$	113,133		$	6,440,390		$	6,008,235		$	135,145		$	6,143,380
Loans held for sale	$	7,802		$	—		$	7,802		$	5,846		$	—		$	5,846

At September 30, 2017 and December 31, 2016, the Company had no material foreign activities. Substantially all of the Company’s loans and unfunded commitments are geographically concentrated in its service areas within the states of Washington, Oregon and Idaho.

The Company has made loans to executive officers and directors of the Company and related interests. These loans are made on the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with unrelated persons and do not involve more than the normal risk of collectability. The aggregate dollar amount of these loans was $10.1 million at both September 30, 2017 and December 31, 2016. During the first nine months of 2017, there were $203 thousand in advances and $253 thousand in repayments.

At September 30, 2017 and December 31, 2016, $2.26 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 $69.8 million and $54.2 million of commercial loans to the Federal Reserve Bank for additional borrowing capacity at September 30, 2017 and December 31, 2016, respectively.

The following is an analysis of nonaccrual loans as of September 30, 2017 and December 31, 2016:

	September 30, 2017				December 31, 2016
	Recorded Investment Nonaccrual Loans		Unpaid Principal Balance Nonaccrual Loans		Recorded Investment Nonaccrual Loans		Unpaid Principal Balance Nonaccrual Loans
	(in thousands)
Commercial business:
Secured	$	25,187	$	35,843	$	11,524	$	21,503
Unsecured	26		1,342		31		303
Real estate:
One-to-four family residential	816		2,904		568		1,302
Commercial & multifamily residential:
Commercial land	2,333		2,629		934		922
Income property	3,586		4,702		4,005		4,247
Owner occupied	3,224		4,712		6,248		9,030
Real estate construction:
One-to-four family residential:
Land and acquisition	26		803		14		102
Residential construction	213		2,568		549		549
Consumer	4,906		5,418		3,883		4,331
Total	$	40,317	$	60,921	$	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 September 30, 2017 and December 31, 2016:

	Current Loans		30 - 59 Days Past Due		60 - 89 Days Past Due		Greater than 90 Days Past Due		Total Past Due		Nonaccrual Loans		Total Loans
September 30, 2017	(in thousands)
Commercial business:
Secured	$	2,607,265	$	2,292	$	1,302	$	—	$	3,594	$	25,187	$	2,636,046
Unsecured	93,879		1		18		—		19		26		93,924
Real estate:
One-to-four family residential	171,936		330		1,408		—		1,738		816		174,490
Commercial & multifamily residential:
Commercial land	283,321		—		—		—		—		2,333		285,654
Income property	1,375,163		1,493		2,656		—		4,149		3,586		1,382,898
Owner occupied	1,135,584		1,410		390		—		1,800		3,224		1,140,608
Real estate construction:
One-to-four family residential:
Land and acquisition	6,787		—		—		—		—		26		6,813
Residential construction	137,707		—		—		—		—		213		137,920
Commercial & multifamily residential:
Income property	172,112		—		—		—		—		—		172,112
Owner occupied	39,561		—		—		—		—		—		39,561
Consumer	315,688		552		357		—		909		4,906		321,503
Total	$	6,339,003	$	6,078	$	6,131	$	—	$	12,209	$	40,317	$	6,391,529
	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 September 30, 2017 and December 31, 2016:

	Recorded Investment of Loans Collectively Measured for Contingency Provision		Recorded Investment of Loans Individually Measured for Specific Impairment		Impaired Loans With Recorded Allowance						Impaired Loans Without Recorded Allowance
					Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance
September 30, 2017	(in thousands)
Commercial business:
Secured	$	2,614,647	$	21,399	$	—	$	—	$	—	$	21,399	$	26,655
Unsecured	93,924		—		—		—		—		—		—
Real estate:
One-to-four family residential	173,562		928		459		736		26		469		1,030
Commercial & multifamily residential:
Commercial land	283,355		2,299		—		—		—		2,299		2,287
Income property	1,378,127		4,771		519		523		25		4,252		4,570
Owner occupied	1,134,945		5,663		—		—		—		5,663		8,573
Real estate construction:
One-to-four family residential:
Land and acquisition	6,813		—		—		—		—		—		—
Residential construction	137,920		—		—		—		—		—		—
Commercial & multifamily residential:
Income property	172,112		—		—		—		—		—		—
Owner occupied	35,511		4,050		—		—		—		4,050		4,050
Consumer	315,038		6,465		5,692		5,982		51		773		914
Total	$	6,345,954	$	45,575	$	6,670	$	7,241	$	102	$	38,905	$	48,079
	Recorded Investment of Loans Collectively Measured for Contingency Provision		Recorded Investment of Loans Individually Measured for Specific Impairment		Impaired Loans With Recorded Allowance						Impaired Loans Without Recorded Allowance
					Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance
December 31, 2016	(in thousands)
Commercial business:
Secured	$	2,442,772	$	8,818	$	2,414	$	2,484	$	664	$	6,404	$	12,831
Unsecured	94,737		—		—		—		—		—		—
Real estate:
One-to-four family residential	167,403		529		435		693		12		94		291
Commercial & multifamily residential:
Commercial land	270,106		708		—		—		—		708		687
Income property	1,365,321		4,425		540		544		27		3,885		4,148
Owner occupied	1,054,564		5,414		—		—		—		5,414		8,102
Real estate construction:
One-to-four family residential:
Land and acquisition	11,542		14		14		102		1		—		—
Residential construction	109,293		336		—		—		—		336		336
Commercial & multifamily residential:
Income property	103,779		—		—		—		—		—		—
Owner occupied	103,480		—		—		—		—		—		—
Consumer	319,307		5,215		4,464		4,558		57		751		833
Total	$	6,042,304	$	25,459	$	7,867	$	8,381	$	761	$	17,592	$	27,228

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

	Three Months Ended September 30,								Nine Months Ended September 30,
	2017				2016				2017				2016
	Average Recorded Investment Impaired Loans		Interest Recognized on Impaired Loans		Average Recorded Investment Impaired Loans		Interest Recognized on Impaired Loans		Average Recorded Investment Impaired Loans		Interest Recognized on Impaired Loans		Average Recorded Investment Impaired Loans		Interest Recognized on Impaired Loans
	(in thousands)
Commercial business:
Secured	$	22,395	$	2	$	6,909	$	15	$	15,349	$	25	$	9,506	$	48
Unsecured	—		—		—		—		—		—		—		—
Real estate:
One-to-four family residential	856		15		617		5		688		37		796		8
Commercial & multifamily residential:
Commercial land	2,549		—		708		—		2,026		—		354		—
Income property	4,214		21		1,939		8		4,137		27		2,010		19
Owner occupied	4,530		127		4,486		—		4,496		319		5,001		—
Real estate construction:
One-to-four family residential:
Land and acquisition	—		—		103		1		4		—		245		4
Residential construction	—		—		449		—		84		—		506		—
Commercial & multifamily residential:
Owner occupied	2,025		151		—		—		1,012		151		—		—
Consumer	6,054		58		3,345		25		5,712		105		2,084		46
Total	$	42,623	$	374	$	18,556	$	54	$	33,508	$	664	$	20,502	$	125

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

	Three months ended September 30, 2017					Three months ended September 30, 2016
	Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment
	(dollars in thousands)
Commercial business:
Secured	2	$	808	$	808	2	$	90	$	90
Real estate:
One-to-four family residential	2	201		201		1	85		85
Commercial and multifamily residential:
Income property	1	1,152		1,152		—	—		—
Owner occupied	1	78		78		—	—		—
Real estate construction:
Commercial and multifamily residential:
Owner occupied	1	4,050		4,050		—	—		—
Consumer	17	1,672		1,672		10	731		731
Total	24	$	7,961	$	7,961	13	$	906	$	906

	Nine months ended September 30, 2017					Nine months ended September 30, 2016
	Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment
	(dollars in thousands)
Commercial business:
Secured	7	$	2,586	$	2,586	7	$	1,753	$	1,753
Real estate:
One-to-four family residential	3	583		583		2	115		115
Commercial and multifamily residential:
Income property	1	1,152		1,152		—	—		—
Owner occupied	1	78		78		1	250		250
Real estate construction:
Commercial and multifamily residential:
Owner occupied	1	4,050		4,050		—	—		—
Consumer	35	4,033		4,033		28	3,442		3,442
Total	48	$	12,482	$	12,482	38	$	5,560	$	5,560

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 $529 thousand of additional funds on loans classified as TDR as of September 30, 2017. The Company had $508 thousand of such commitments at December 31, 2016. The Company did not have any loans modified as TDR that defaulted within twelve months of being modified as TDR during the three or nine months ended September 30, 2017 and 2016.

Purchased Credit Impaired Loans

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

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

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

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

The following is an analysis of our PCI loans, net of related allowance for losses and remaining valuation discounts as of September 30, 2017 and December 31, 2016:

	September 30, 2017		December 31, 2016
	(in thousands)
Commercial business	$	14,895	$	21,606
Real estate:
One-to-four family residential	16,698		20,643
Commercial and multifamily residential	83,082		94,795
Total real estate	99,780		115,438
Real estate construction:
One-to-four family residential	377		832
Commercial and multifamily residential	1,059		1,726
Total real estate construction	1,436		2,558
Consumer	13,039		17,649
Subtotal of PCI loans	129,150		157,251
Less:
Valuation discount resulting from acquisition accounting	8,673		11,591
Allowance for loan losses	7,344		10,515
PCI loans, net of allowance for loan losses	$	113,133	$	135,145

The following table shows the changes in accretable yield for PCI loans for the three and nine months ended September 30, 2017 and 2016:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
	(in thousands)
Balance at beginning of period	$	35,706		$	52,909		$	45,191		$	58,981
Accretion	(2,766		)	(4,902		)	(9,830		)	(12,905		)
Disposals	—			(178		)	(158		)	(157		)
Reclassifications from (to) nonaccretable difference	(892		)	1,034			(3,155		)	2,944
Balance at end of period	$	32,048		$	48,863		$	32,048		$	48,863

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

9 Months Ended

Sep. 30, 2017

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

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

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

We record an allowance for loan and lease losses (the “allowance”) to recognize management’s estimate of credit losses incurred in the loan portfolio at each balance sheet date. We have used the same methodology for allowance calculations during the nine months ended September 30, 2017 and 2016.

The following tables show a detailed analysis of the allowance for the three and nine months ended September 30, 2017 and 2016:

	Beginning Balance		Charge-offs			Recoveries		Provision (Recovery)			Ending Balance		Specific Reserve		General Allocation
Three months ended September 30, 2017	(in thousands)
Commercial business:
Secured	$	39,539	$	(1,362	)	$	550	$	(969	)	$	37,758	$	—	$	37,758
Unsecured	1,147		—			138		(298		)	987		—		987
Real estate:
One-to-four family residential	628		—			40		3			671		26		645
Commercial & multifamily residential:
Commercial land	2,356		—			45		(97		)	2,304		—		2,304
Income property	6,854		—			9		241			7,104		25		7,079
Owner occupied	6,512		—			4		306			6,822		—		6,822
Real estate construction:
One-to-four family residential:
Land and acquisition	361		—			14		(83		)	292		—		292
Residential construction	1,377		—			6		(272		)	1,111		—		1,111
Commercial & multifamily residential:
Income property	985		—			—		279			1,264		—		1,264
Owner occupied	1,382		—			—		(87		)	1,295		—		1,295
Consumer	3,551		(263		)	343		42			3,673		51		3,622
Purchased credit impaired	8,061		(1,633		)	1,389		(473		)	7,344		—		7,344
Unallocated	231		—			—		760			991		—		991
Total	$	72,984	$	(3,258	)	$	2,538	$	(648	)	$	71,616	$	102	$	71,514
	Beginning Balance		Charge-offs			Recoveries		Provision (Recovery)			Ending Balance		Specific Reserve		General Allocation
Nine months ended September 30, 2017	(in thousands)
Commercial business:
Secured	$	36,050	$	(6,071	)	$	3,750	$	4,029		$	37,758	$	—	$	37,758
Unsecured	960		(18		)	247		(202		)	987		—		987
Real estate:
One-to-four family residential	599		(460		)	380		152			671		26		645
Commercial & multifamily residential:
Commercial land	1,797		—			45		462			2,304		—		2,304
Income property	7,342		—			104		(342		)	7,104		25		7,079
Owner occupied	6,439		—			114		269			6,822		—		6,822
Real estate construction:
One-to-four family residential:
Land and acquisition	316		(14		)	61		(71		)	292		—		292
Residential construction	669		—			46		396			1,111		—		1,111
Commercial & multifamily residential:
Income property	404		—			—		860			1,264		—		1,264
Owner occupied	1,192		—			—		103			1,295		—		1,295
Consumer	3,534		(1,156		)	876		419			3,673		51		3,622
Purchased credit impaired	10,515		(5,372		)	3,737		(1,536		)	7,344		—		7,344
Unallocated	226		—			—		765			991		—		991
Total	$	70,043	$	(13,091	)	$	9,360	$	5,304		$	71,616	$	102	$	71,514

	Beginning Balance		Charge-offs			Recoveries		Provision (Recovery)			Ending Balance		Specific Reserve		General Allocation
Three months ended September 30, 2016	(in thousands)
Commercial business:
Secured	$	31,808	$	(2,128	)	$	787	$	2,008		$	32,475	$	873	$	31,602
Unsecured	1,265		(31		)	67		(128		)	1,173		—		1,173
Real estate:
One-to-four family residential	675		—			81		221			977		353		624
Commercial & multifamily residential:
Commercial land	1,422		—			—		92			1,514		—		1,514
Income property	8,046		—			10		149			8,205		28		8,177
Owner occupied	6,336		—			10		487			6,833		—		6,833
Real estate construction:
One-to-four family residential:
Land and acquisition	587		—			2		(134		)	455		—		455
Residential construction	1,376		—			19		(393		)	1,002		—		1,002
Commercial & multifamily residential:
Income property	904		—			107		(480		)	531		—		531
Owner occupied	1,384		—			—		57			1,441		—		1,441
Consumer	3,559		(383		)	399		168			3,743		46		3,697
Purchased credit impaired	11,781		(2,062		)	2,216		(433		)	11,502		—		11,502
Unallocated	161		—			—		252			413		—		413
Total	$	69,304	$	(4,604	)	$	3,698	$	1,866		$	70,264	$	1,300	$	68,964
	Beginning Balance		Charge-offs			Recoveries		Provision (Recovery)			Ending Balance		Specific Reserve		General Allocation
Nine months ended September 30, 2016	(in thousands)
Commercial business:
Secured	$	32,321	$	(8,798	)	$	2,126	$	6,826		$	32,475	$	873	$	31,602
Unsecured	1,299		(75		)	143		(194		)	1,173		—		1,173
Real estate:
One-to-four family residential	916		(35		)	142		(46		)	977		353		624
Commercial & multifamily residential:
Commercial land	1,178		(26		)	2		360			1,514		—		1,514
Income property	6,616		—			191		1,398			8,205		28		8,177
Owner occupied	5,550		—			26		1,257			6,833		—		6,833
Real estate construction:
One-to-four family residential:
Land and acquisition	339		—			55		61			455		—		455
Residential construction	733		—			225		44			1,002		—		1,002
Commercial & multifamily residential:
Income property	388		—			109		34			531		—		531
Owner occupied	1,006		—			—		435			1,441		—		1,441
Consumer	3,531		(983		)	765		430			3,743		46		3,697
Purchased credit impaired	13,726		(7,826		)	5,291		311			11,502		—		11,502
Unallocated	569		—			—		(156		)	413		—		413
Total	$	68,172	$	(17,743	)	$	9,075	$	10,760		$	70,264	$	1,300	$	68,964

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					Nine Months Ended
	September 30,					September 30,
	2017			2016		2017		2016
	(in thousands)
Balance at beginning of period	$	3,555		$	2,780	$	2,705	$	2,930
Net changes in the allowance for unfunded commitments and letters of credit	(75		)	125		775		(25		)
Balance at end of period	$	3,480		$	2,905	$	3,480	$	2,905

Risk Elements

The extension of credit in the form of loans or other credit products to individuals and businesses is one of our principal business activities. Our policies and applicable laws and regulations require risk analysis as well as ongoing portfolio and credit management. We manage our credit risk through lending limit constraints, credit review, approval policies and extensive, ongoing internal monitoring. We also manage credit risk through diversification of the loan portfolio by type of loan, type of industry and type of borrower and by limiting the aggregation of debt to a single borrower.

Risk ratings are reviewed and updated whenever appropriate, with more periodic reviews as the risk and dollar value of loss on the loan increases. In the event full collection of principal and interest is not reasonably assured, the loan is appropriately downgraded and, if warranted, placed on nonaccrual status even though the loan may be current as to principal and interest payments. Additionally, we assess whether an impairment of a loan warrants specific reserves or a write-down of the loan.

Pass rated loans are generally considered to have sufficient sources of repayment in order to repay the loan in full in accordance with all terms and conditions. Special Mention rated loans have potential weaknesses that, if left uncorrected, may result in deterioration of the repayment prospects for the asset or in the Company’s credit position at some future date. Loans with a risk rating of Substandard or worse are reported as classified loans in our allowance analysis. We review these loans to assess the ability of our borrowers to service all interest and principal obligations and, as a result, the risk rating may be adjusted accordingly. Loans risk rated as Substandard reflect loans where a loss is possible if loan weaknesses are not corrected. Doubtful rated loans have a high probability of loss; however, the amount of loss has not yet been determined. Loss rated loans are considered uncollectable and when identified, are charged off.

The following is an analysis of the credit quality of our loan portfolio, excluding PCI loans, as of September 30, 2017 and December 31, 2016:

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
September 30, 2017	(in thousands)
Loans, excluding PCI loans:
Commercial business:
Secured	$	2,464,772	$	69,577	$	101,697	$	—	$	—	$	2,636,046
Unsecured	92,881		—		1,043		—		—		93,924
Real estate:
One-to-four family residential	171,362		1,195		1,933		—		—		174,490
Commercial and multifamily residential:
Commercial land	276,675		5,527		3,452		—		—		285,654
Income property	1,356,196		1,797		24,905		—		—		1,382,898
Owner occupied	1,101,139		14,275		25,194		—		—		1,140,608
Real estate construction:
One-to-four family residential:
Land and acquisition	6,787		—		26		—		—		6,813
Residential construction	135,965		406		1,549		—		—		137,920
Commercial and multifamily residential:
Income property	156,727		15,385		—		—		—		172,112
Owner occupied	35,511		—		4,050		—		—		39,561
Consumer	312,828		—		8,675		—		—		321,503
Total	$	6,110,843	$	108,162	$	172,524	$	—	$	—	6,391,529
Less:
Allowance for loan and lease losses											64,272
Loans, excluding PCI loans, net											$	6,327,257

	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 September 30, 2017 and December 31, 2016:

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
September 30, 2017	(in thousands)
PCI loans:
Commercial business:
Secured	$	13,353	$	—	$	761	$	—	$	—	$	14,114
Unsecured	714		—		67		—		—		781
Real estate:
One-to-four family residential	15,883		—		815		—		—		16,698
Commercial and multifamily residential:
Commercial land	9,854		—		—		—		—		9,854
Income property	26,174		—		—		—		—		26,174
Owner occupied	46,265		—		789		—		—		47,054
Real estate construction:
One-to-four family residential:
Land and acquisition	319		—		58		—		—		377
Commercial and multifamily residential:
Income property	773		—		—		—		—		773
Owner occupied	286		—		—		—		—		286
Consumer	12,321		—		718		—		—		13,039
Total	$	125,942	$	—	$	3,208	$	—	$	—	129,150
Less:
Valuation discount resulting from acquisition accounting											8,673
Allowance for loan losses											7,344
PCI loans, net											$	113,133

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

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Other Real Estate Owned

9 Months Ended

Sep. 30, 2017

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

Other Real Estate Owned

Other Real Estate Owned (“OREO”)

The following tables set forth activity in OREO for the three and nine months ended September 30, 2017 and 2016:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
	(in thousands)
Balance, beginning of period	$	4,058		$	10,613		$	5,998		$	13,738
Transfers in	74			891			74			1,202
Valuation adjustments	(138		)	(14		)	(364		)	(290		)
Proceeds from sale of OREO property	(182		)	(2,569		)	(1,901		)	(5,845		)
Gain (loss) on sale of OREO, net	(130		)	73			(125		)	189
Balance, end of period	$	3,682		$	8,994		$	3,682		$	8,994

At September 30, 2017, there were $74 thousand in foreclosed residential real estate properties held as OREO and the recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process was $686 thousand.

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Covered Assets and FDIC Loss-sharing Asset

9 Months Ended

Sep. 30, 2017

Covered Assets And FDIC Loss Sharing Asset

Covered Assets and FDIC Loss sharing Asset

FDIC Loss-sharing Asset and Covered Assets

During the second quarter of 2017, we entered into an agreement with the FDIC to terminate all loss-sharing agreements ahead of their contractual maturities. These loss-sharing agreements were entered into in 2010 and 2011 in conjunction with our acquisitions of (1) Columbia River Bank in January 2010, (2) American Marine Bank in January 2010, (3) Summit Bank in May 2011 and (4) First Heritage Bank in May 2011. Under the early termination, all rights and obligations of the Company and the FDIC have been resolved and completed. The Company paid the FDIC $4.7 million as consideration for early termination. The early termination was recorded in the Company’s financial statements by removing the remaining FDIC loss-sharing asset of $3.1 million and the remaining FDIC clawback liability of $5.4 million and recording a one-time, pre-tax charge on termination of $2.4 million, recorded to “Other” noninterest expense. Prior to entering into the termination agreement, the Company had $74.0 million of non-single family covered assets and $26.4 million of single family covered assets at March 31, 2017. As a result of the termination agreement, the Company will benefit from all future recoveries, and be responsible for all future losses and expenses related to the assets previously subject to the loss-sharing agreements.

The following table shows a detailed analysis of the FDIC loss-sharing asset for the three and nine months ended September 30, 2017 and 2016:

	Three Months Ended September 30,					Nine Months Ended September 30,
	2017		2016			2017			2016
	(in thousands)
Balance at beginning of period	$	—	$	4,266		$	3,535		$	6,568
Adjustments not reflected in income:
Cash paid to (received from) the FDIC, net	—		20			184			(23		)
FDIC shared recoveries, net	—		(590		)	(149		)	(756		)
Termination of FDIC loss-sharing agreements	—		—			(3,123		)	—
Adjustments reflected in noninterest income (1):
Amortization, net	—		(315		)	(414		)	(2,530		)
Loan impairment	—		266			40			393
Sale of other real estate	—		(49		)	18			71
Valuation adjustments of other real estate owned	—		—			—			(22		)
Other	—		(6		)	(91		)	(109		)
Balance at end of period	$	—	$	3,592		$	—		$	3,592

__________

(1) Amounts shown in the table above for adjustments reflected in noninterest income include only those adjustments recorded to the noninterest income line item “Change in FDIC loss-sharing asset” in the Consolidated Statements of Income and do not include the charge related to the termination of the FDIC loss-sharing agreements.

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Goodwill and Intangible Assets

9 Months Ended

Sep. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

Goodwill and Other Intangible Assets

In accordance with the Intangibles – Goodwill and Other topic of the FASB ASC, goodwill is not amortized but is reviewed for potential impairment at the reporting unit level. Management analyzes its goodwill for impairment on an annual basis on July 31 and between annual tests in certain circumstances such as material adverse changes in legal, business, regulatory and economic factors. An impairment loss is recorded to the extent that the carrying amount of goodwill exceeds its implied fair value. The Company performed an annual impairment assessment as of July 31, 2017 and concluded that there was no impairment.

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

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

	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
	(in thousands)
Goodwill
Total goodwill	$	382,762		$	382,762		$	382,762		$	382,762
Other intangible assets, net
Core deposit intangible:
Gross core deposit intangible balance at beginning of period	58,598			58,598			58,598			58,598
Accumulated amortization at beginning of period	(44,484		)	(39,006		)	(41,886		)	(35,940		)
Core deposit intangible, net at beginning of period	14,114			19,592			16,712			22,658
CDI current period amortization	(1,188		)	(1,460		)	(3,786		)	(4,526		)
Total core deposit intangible, net at end of period	12,926			18,132			12,926			18,132
Intangible assets not subject to amortization	919			919			919			919
Other intangible assets, net at end of period	13,845			19,051			13,845			19,051
Total goodwill and other intangible assets at end of period	$	396,607		$	401,813		$	396,607		$	401,813

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

	Amount
	(in thousands)
Year ending December 31,
2017	$	1,127
2018	3,855
2019	2,951
2020	2,048
2021	1,440

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Derivatives and Balance Sheet Offsetting

9 Months Ended

Sep. 30, 2017

General Discussion of Derivative Instruments and Hedging Activities [Abstract]

Derivatives and Hedging Activities

Derivatives and Balance Sheet Offsetting

The Company periodically enters into certain commercial loan interest rate swap agreements in order to provide commercial loan customers the ability to convert from variable to fixed interest rates. Under these agreements, the Company enters into a variable-rate loan agreement with a customer in addition to a swap agreement. This swap agreement effectively converts the customer’s variable rate loan into a fixed rate. The Company then enters into a corresponding swap agreement with a third-party in order to offset its exposure on the variable and fixed components of the customer agreement. As the interest rate swap agreements with the customers and third parties are not designated as hedges under the Derivatives and Hedging topic of the FASB ASC, the instruments are marked to market in earnings. The notional amount of open interest rate swap agreements at September 30, 2017 and December 31, 2016 was $380.0 million and $309.3 million, respectively. During the three and nine months ended September 30, 2017, mark-to-market gains of $6 thousand and $12 thousand were recorded to “Other” noninterest expense. During the three and nine months ended September 30, 2016, mark-to-market gains of $9 thousand and $2 thousand were recorded to “Other” noninterest expense.

The following table presents the fair value of derivatives not designated as hedging instruments at September 30, 2017 and December 31, 2016:

Asset Derivatives

Liability Derivatives

September 30, 2017

December 31, 2016

September 30, 2017

December 31, 2016

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

(in thousands)

Interest rate contracts

Other assets

$

8,992

Other assets

$

9,012

Other liabilities

$

9,004

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
September 30, 2017	(in thousands)
Assets
Interest rate contracts	$	8,992	$	—	$	8,992	$	—		$	8,992
Liabilities
Interest rate contracts	$	9,004	$	—	$	9,004	$	(9,004	)	$	—
Repurchase agreements	$	40,933	$	—	$	40,933	$	(40,933	)	$	—
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
September 30, 2017	(in thousands)
Class of collateral pledged for repurchase agreements
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	15,933	$	—	$	—	$	25,000	$	40,933
Gross amount of recognized liabilities for repurchase agreements									40,933
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

9 Months Ended

Sep. 30, 2017

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies Disclosure [Text Block]

Commitments and Contingent Liabilities

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

Sale-leaseback transactions: On August 11, 2017, the Company sold one of its Idaho facilities and leased back the portion of the facility utilized for branch operations. The lease term is through August 2027, with monthly payments of approximately $26 thousand. The resulting gain on sale of $509 thousand was deferred in accordance with the Leases topic of the FASB ASC and is being amortized over the life of the respective lease. At September 30, 2017, the deferred gain was $501 thousand and is included in “Other liabilities” on the Consolidated Balance Sheets.

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 September 30, 2017, the deferred gain was $661 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 September 30, 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 $50.1 million and $49.7 million at September 30, 2017 and December 31, 2016, respectively. In addition, commitments under commercial letters of credit used to facilitate customers’ trade transactions and other off-balance sheet liabilities amounted to $2.9 million and $3.4 million at September 30, 2017 and December 31, 2016, respectively.

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

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Shareholders' Equity

9 Months Ended

Sep. 30, 2017

Stockholders' Equity Note [Abstract]

Shareholders' Equity

Shareholders’ Equity

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

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

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

On July 27, 2017, the Company declared a regular quarterly cash dividend of $0.22 per common share payable on August 23, 2017 to shareholders of record at the close of business on August 9, 2017.

Subsequent to quarter end, on October 19, 2017, the Company declared a regular quarterly cash dividend of $0.22 per common share payable on November 14, 2017 to shareholders of record at the close of business on October 31, 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

9 Months Ended

Sep. 30, 2017

Accumulated Other Comprehensive Income (Loss) [Abstract]

Accumulated Other Comprehensive Income

Accumulated Other Comprehensive Loss

The following table shows changes in accumulated other comprehensive income (loss) by component for the three and nine month periods ended September 30, 2017 and 2016:

	Unrealized Gains and Losses on Available-for-Sale Securities (1)			Unrealized Gains and Losses on Pension Plan Liability (1)			Total (1)
Three months ended September 30, 2017	(in thousands)
Beginning balance	$	(4,969	)	$	(1,559	)	$	(6,528	)
Other comprehensive income before reclassifications	549			—			549
Amounts reclassified from accumulated other comprehensive income	—			46			46
Net current-period other comprehensive income	549			46			595
Ending balance	$	(4,420	)	$	(1,513	)	$	(5,933	)
Three months ended September 30, 2016
Beginning balance	$	27,280		$	(6,469	)	$	20,811
Other comprehensive loss before reclassifications	(4,049		)	—			(4,049		)
Amounts reclassified from accumulated other comprehensive income (loss)	(364		)	107			(257		)
Net current-period other comprehensive income (loss)	(4,413		)	107			(4,306		)
Ending balance	$	22,867		$	(6,362	)	$	16,505
Nine months ended September 30, 2017
Beginning balance	$	(12,704	)	$	(6,295	)	$	(18,999	)
Other comprehensive income before reclassifications	8,284			4,604			12,888
Amounts reclassified from accumulated other comprehensive income	—			178			178
Net current-period other comprehensive income	8,284			4,782			13,066
Ending balance	$	(4,420	)	$	(1,513	)	$	(5,933	)
Nine months ended September 30, 2016
Beginning balance	$	386		$	(6,681	)	$	(6,295	)
Other comprehensive income before reclassifications	23,229			—			23,229
Amounts reclassified from accumulated other comprehensive income (loss)	(748		)	319			(429		)
Net current-period other comprehensive income	22,481			319			22,800
Ending balance	$	22,867		$	(6,362	)	$	16,505

__________

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

The following table shows details regarding the reclassifications from accumulated other comprehensive income (loss) for the three and nine month periods ended September 30, 2017 and 2016:

	Amount Reclassified from Accumulated Other Comprehensive Income (Loss)
	Three Months Ended September 30,						Nine Months Ended September 30,						Affected line Item in the Consolidated
	2017			2016			2017			2016			Statement of Income
	(in thousands)
Unrealized gains and losses on available-for-sale securities
Investment securities gains	$	—		$	572		$	—		$	1,174		Investment securities gains, net
	—			572			—			1,174			Total before tax
	—			(208		)	—			(426		)	Income tax provision
	$	—		$	364		$	—		$	748		Net of tax
Amortization of pension plan liability
Actuarial losses	$	(72	)	$	(167	)	$	(279	)	$	(501	)	Compensation and employee benefits
	(72		)	(167		)	(279		)	(501		)	Total before tax
	26			60			101			182			Income tax benefit
	$	(46	)	$	(107	)	$	(178	)	$	(319	)	Net of tax

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Fair Value Accounting and Measurement

9 Months Ended

Sep. 30, 2017

Fair Value Disclosures [Abstract]

Fair Value Accounting and Measurement

Fair Value Accounting and Measurement

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

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

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

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

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

Fair values are determined as follows:

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

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

The following table sets forth the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis at September 30, 2017 and December 31, 2016 by level within the fair value hierarchy. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement:

	Fair value		Fair Value Measurements at Reporting Date Using
			Level 1		Level 2		Level 3
September 30, 2017	(in thousands)
Assets
Securities available for sale:
U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations	$	1,377,417	$	—	$	1,377,417	$	—
State and municipal debt securities	483,488		—		483,488		—
U.S. government agency and government-sponsored enterprise securities	341,604		—		341,604		—
U.S. government securities	250		250		—		—
Other securities	5,114		—		5,114		—
Total securities available for sale	$	2,207,873	$	250	$	2,207,623	$	—
Other assets (Interest rate contracts)	$	8,992	$	—	$	8,992	$	—
Liabilities
Other liabilities (Interest rate contracts)	$	9,004	$	—	$	9,004	$	—

	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 nine month periods ended September 30, 2017 and 2016. The Company recognizes transfers between levels of the valuation hierarchy based on the valuation level at the end of the reporting period.

Nonrecurring Measurements

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

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

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

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

	Fair value at September 30, 2017		Fair Value Measurements at Reporting Date Using						Losses During the Three Months Ended September 30, 2017		Losses During the Nine Months Ended September 30, 2017
			Level 1		Level 2		Level 3
	(in thousands)
Impaired loans	$	843	$	—	$	—	$	843	$	170	$	170
OREO	625		—		—		625		138		138
	$	1,468	$	—	$	—	$	1,468	$	308	$	308

	Fair value at September 30, 2016		Fair Value Measurements at Reporting Date Using						Losses During the Three Months Ended September 30, 2016		Losses During the Nine Months Ended September 30, 2016
			Level 1		Level 2		Level 3
	(in thousands)
Impaired loans	$	2,304	$	—	$	—	$	2,304	$	647	$	3,285
OREO	335		—		—		335		14		14
	$	2,639	$	—	$	—	$	2,639	$	661	$	3,299

The losses on impaired loans disclosed above represent the amount of the specific reserve and/or charge-offs during the period applicable to loans held at period end. The amount of the specific reserve is included in the allowance for loan and lease losses. The losses on OREO disclosed above represent the write-downs taken at foreclosure that were charged to the allowance for loan and lease losses, as well as subsequent changes in any valuation allowances from updated appraisals that were recorded to earnings.

Quantitative information about Level 3 fair value measurements

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

	Fair value at September 30, 2017		Valuation Technique	Unobservable Input	Range (Weighted Average) (1)
	(dollars in thousands)
Impaired loans - collateral-dependent (3)	$	715	Fair Market Value of Collateral	Adjustment to Stated Value	N/A (2)
Impaired loans - other (4)	$	128	Discounted Cash Flow	Discount Rate	7.75%
OREO	$	625	Fair Market Value of Collateral	Adjustment to Appraisal Value	N/A (2)
(1) Discount rate used in discounted cash flow valuation.
(2) Quantitative disclosures are not provided for collateral-dependent impaired loans and OREO because there were no adjustments made to the appraisal values or stated values during the current period.
(3) Collateral consists of a government agency guarantee.
(4) As there was only one impaired loan remeasured using discounted cash flows, a range of discounts could not be provided.

	Fair value at September 30, 2016		Valuation Technique	Unobservable Input	Range (Weighted Average) (1)
	(dollars in thousands)
Impaired loans - collateral-dependent (3)	$	943	Fair Market Value of Collateral	Adjustment to Stated Value	N/A (2)
Impaired loans - other	$	1,361	Discounted Cash Flow	Discount Rate	2.85% - 6.50% (3.85%)
OREO	$	335	Fair Market Value of Collateral	Adjustment to Appraisal Value	N/A (2)
(1) Discount rate used in discounted cash flow valuation.
(2) Quantitative disclosures are not provided for collateral-dependent impaired loans and OREO because there were no adjustments made to the appraisal values or stated values during the current period.
(3) Collateral consists of fixed assets and accounts receivable.

Fair value of financial instruments

Because broadly traded markets do not exist for most of the Company’s financial instruments, the fair value calculations attempt to incorporate the effect of current market conditions at a specific time. These determinations are subjective in nature, involve uncertainties and matters of significant judgment and do not include tax ramifications; therefore, the results cannot be determined with precision, substantiated by comparison to independent markets and may not be realized in an actual sale or immediate settlement of the instruments. There may be inherent weaknesses in any calculation technique, and changes in the underlying assumptions used, including discount rates and estimates of future cash flows, could significantly affect the results. For all of these reasons, the aggregation of the fair value calculations presented herein do not represent, and should not be construed to represent, the underlying value of the Company.

The following methods and assumptions were used to estimate the fair value of each class of financial instruments for which it is practicable to estimate that value:

Cash and due from banks and interest-earning deposits with banks—The fair value of financial instruments that are short-term or reprice frequently and that have little or no risk are considered to have a fair value that approximates carrying value (Level 1).

Securities available for sale—Securities at fair value, other than U.S. Treasury Notes, are priced using a combination of market activity, industry recognized information sources, yield curves, discounted cash flow models and other factors (Level 2). U.S. Treasury Notes are priced using quotes in active markets (Level 1).

Federal Home Loan Bank stock—The fair value is based upon the par value of the stock which equates to its carrying value (Level 2).

Loans held for sale—The carrying amount of loans held for sale approximates their fair values due to the short period of time between the origination and sale dates (Level 2).

Loans—Loans are not recorded at fair value on a recurring basis. Nonrecurring fair value adjustments are periodically recorded on impaired loans that are measured for impairment based on the fair value of collateral. For most performing loans, fair value is estimated using expected duration and lending rates that would have been offered on September 30, 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 September 30, 2017 (Level 3).

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

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

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

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

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

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

The following tables summarize carrying amounts and estimated fair values of selected financial instruments as well as assumptions used by the Company in estimating fair value at September 30, 2017 and December 31, 2016:

	September 30, 2017
	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
	(in thousands)
Assets
Cash and due from banks	$	186,116	$	186,116	$	186,116	$	—	$	—
Interest-earning deposits with banks	136,578		136,578		136,578		—		—
Securities available for sale	2,207,873		2,207,873		250		2,207,623		—
FHLB stock	10,240		10,240		—		10,240		—
Loans held for sale	7,802		7,802		—		7,802		—
Loans	6,440,390		6,309,449		—		—		6,309,449
Interest rate contracts	8,992		8,992		—		8,992		—
Liabilities
Deposits	$	8,341,717	$	8,337,145	$	7,960,870	$	376,275	$	—
FHLB advances	6,465		7,367		—		7,367		—
Repurchase agreements	40,933		40,987		—		40,987		—
Interest rate contracts	9,004		9,004		—		9,004		—

	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

9 Months Ended

Sep. 30, 2017

Earnings Per Share [Abstract]

Earnings Per Common Share

Earnings per Common Share

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

The following table sets forth the computation of basic and diluted earnings per share for the three and nine months ended September 30, 2017 and 2016:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2017		2016		2017		2016
	(in thousands except per share)
Basic EPS:
Net income	$	40,769	$	27,484	$	97,100	$	74,148
Less: Earnings allocated to participating securities:
Preferred shares	—		48		4		131
Nonvested restricted shares	558		378		1,325		953
Earnings allocated to common shareholders	$	40,211	$	27,058	$	95,771	$	73,064
Weighted average common shares outstanding	57,566		57,215		57,459		57,173
Basic earnings per common share	$	0.70	$	0.47	$	1.67	$	1.28
Diluted EPS:
Earnings allocated to common shareholders	$	40,211	$	27,058	$	95,771	$	73,064
Weighted average common shares outstanding	57,566		57,215		57,459		57,173
Dilutive effect of equity awards	5		10		6		10
Weighted average diluted common shares outstanding	57,571		57,225		57,465		57,183
Diluted earnings per common share	$	0.70	$	0.47	$	1.67	$	1.28
Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive	12		15		13		20

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Subsequent event

9 Months Ended

Sep. 30, 2017

Subsequent Event [Line Items]

Subsequent Events [Text Block]

Subsequent Event

On November 1, 2017, the Company completed its previously announced acquisition of Pacific Continental Corporation ("Pacific Continental"), for total consideration of approximately $644.8 million. The Company acquired 100% of the voting equity interests of Pacific Continental. The primary reasons for the acquisition were to expand in the Eugene, Oregon market and improve branch network efficiencies in the Seattle and Portland markets. The operating results of the Company for the nine months ended September 30, 2017 do not include the operating results produced by Pacific Continental as the acquisition did not close until November 1, 2017. It is not practical to present other financial information related to the acquisition at this time because the fair value measurement of assets acquired and liabilities assumed has not been finalized.

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Securities (Tables)

9 Months Ended

Sep. 30, 2017

Available-for-sale Securities [Abstract]

Securities Available for Sale

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

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
September 30, 2017
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	1,391,636	$	3,143	$	(17,362	)	$	1,377,417
State and municipal securities	476,702		9,047		(2,261		)	483,488
U.S. government agency and government-sponsored enterprise securities	341,462		1,372		(1,230		)	341,604
U.S. government securities	251		—		(1		)	250
Other securities	5,284		82		(252		)	5,114
Total	$	2,215,335	$	13,644	$	(21,106	)	$	2,207,873
December 31, 2016
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	1,486,690	$	2,760	$	(23,718	)	$	1,465,732
State and municipal securities	473,914		6,343		(5,197		)	475,060
U.S. government agency and government-sponsored enterprise securities	332,348		1,065		(1,511		)	331,902
U.S. government securities	801		—		(1		)	800
Other securities	5,284		63		(264		)	5,083
Total	$	2,299,037	$	10,231	$	(30,691	)	$	2,278,577

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

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

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2017		2016		2017		2016
	(in thousands)
Proceeds from sales of available for sale securities	$	—	$	37,390	$	—	$	120,800
Gross realized gains	$	—	$	572	$	—	$	1,174
Gross realized losses	—		—		—		—
Net realized gains	$	—	$	572	$	—	$	1,174

Schedule of Contractual Maturities of Investment Securities Available for Sale

The scheduled contractual maturities of investment securities available for sale at September 30, 2017 are presented as follows:

	September 30, 2017
	Amortized Cost		Fair Value
	(in thousands)
Due within one year	$	108,477	$	108,462
Due after one year through five years	506,439		509,784
Due after five years through ten years	672,288		671,188
Due after ten years	922,847		913,325
Other securities with no stated maturity	5,284		5,114
Total investment securities available-for-sale	$	2,215,335	$	2,207,873

Carrying Value of Securities Pledged As Collateral

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

	September 30, 2017
	(in thousands)
Washington and Oregon State to secure public deposits	$	242,188
Federal Reserve Bank to secure borrowings	54,723
Other securities pledged	122,392
Total securities pledged as collateral	$	419,303

Summary of Gross Unrealized Losses and Fair Value of the Investments with Unrealized Losses

The following table shows the gross unrealized losses and fair value of the Company’s investments with unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at September 30, 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)
September 30, 2017
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	537,162	$	(4,765	)	$	456,330	$	(12,597	)	$	993,492	$	(17,362	)
State and municipal securities	75,499		(700		)	45,328		(1,561		)	120,827		(2,261		)
U.S. government agency and government-sponsored enterprise securities	173,027		(665		)	21,517		(565		)	194,544		(1,230		)
U.S. government securities	250		(1		)	—		—			250		(1		)
Other securities	2,278		(36		)	2,740		(216		)	5,018		(252		)
Total	$	788,216	$	(6,167	)	$	525,915	$	(14,939	)	$	1,314,131	$	(21,106	)
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)

9 Months Ended

Sep. 30, 2017

Financing Receivable, Recorded Investment [Line Items]

Analysis of Loan Portfolio by Major Types of Loans

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

	September 30, 2017									December 31, 2016
	Loans, excluding PCI loans			PCI Loans			Total			Loans, excluding PCI loans			PCI Loans			Total
	(in thousands)
Commercial business	$	2,735,206		$	13,662		$	2,748,868		$	2,551,054		$	20,185		$	2,571,239
Real estate:
One-to-four family residential	176,487			14,325			190,812			170,331			17,862			188,193
Commercial and multifamily residential	2,825,794			79,336			2,905,130			2,719,830			89,231			2,809,061
Total real estate	3,002,281			93,661			3,095,942			2,890,161			107,093			2,997,254
Real estate construction:
One-to-four family residential	145,419			377			145,796			121,887			832			122,719
Commercial and multifamily residential	213,939			958			214,897			209,118			1,565			210,683
Total real estate construction	359,358			1,335			360,693			331,005			2,397			333,402
Consumer	323,913			11,819			335,732			329,261			15,985			345,246
Less: Net unearned income	(29,229		)	—			(29,229		)	(33,718		)	—			(33,718		)
Total loans, net of unearned income	6,391,529			120,477			6,512,006			6,067,763			145,660			6,213,423
Less: Allowance for loan and lease losses	(64,272		)	(7,344		)	(71,616		)	(59,528		)	(10,515		)	(70,043		)
Total loans, net	$	6,327,257		$	113,133		$	6,440,390		$	6,008,235		$	135,145		$	6,143,380
Loans held for sale	$	7,802		$	—		$	7,802		$	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 September 30, 2017 and December 31, 2016:

	September 30, 2017				December 31, 2016
	Recorded Investment Nonaccrual Loans		Unpaid Principal Balance Nonaccrual Loans		Recorded Investment Nonaccrual Loans		Unpaid Principal Balance Nonaccrual Loans
	(in thousands)
Commercial business:
Secured	$	25,187	$	35,843	$	11,524	$	21,503
Unsecured	26		1,342		31		303
Real estate:
One-to-four family residential	816		2,904		568		1,302
Commercial & multifamily residential:
Commercial land	2,333		2,629		934		922
Income property	3,586		4,702		4,005		4,247
Owner occupied	3,224		4,712		6,248		9,030
Real estate construction:
One-to-four family residential:
Land and acquisition	26		803		14		102
Residential construction	213		2,568		549		549
Consumer	4,906		5,418		3,883		4,331
Total	$	40,317	$	60,921	$	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 September 30, 2017 and December 31, 2016:

	Current Loans		30 - 59 Days Past Due		60 - 89 Days Past Due		Greater than 90 Days Past Due		Total Past Due		Nonaccrual Loans		Total Loans
September 30, 2017	(in thousands)
Commercial business:
Secured	$	2,607,265	$	2,292	$	1,302	$	—	$	3,594	$	25,187	$	2,636,046
Unsecured	93,879		1		18		—		19		26		93,924
Real estate:
One-to-four family residential	171,936		330		1,408		—		1,738		816		174,490
Commercial & multifamily residential:
Commercial land	283,321		—		—		—		—		2,333		285,654
Income property	1,375,163		1,493		2,656		—		4,149		3,586		1,382,898
Owner occupied	1,135,584		1,410		390		—		1,800		3,224		1,140,608
Real estate construction:
One-to-four family residential:
Land and acquisition	6,787		—		—		—		—		26		6,813
Residential construction	137,707		—		—		—		—		213		137,920
Commercial & multifamily residential:
Income property	172,112		—		—		—		—		—		172,112
Owner occupied	39,561		—		—		—		—		—		39,561
Consumer	315,688		552		357		—		909		4,906		321,503
Total	$	6,339,003	$	6,078	$	6,131	$	—	$	12,209	$	40,317	$	6,391,529
	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 September 30, 2017 and December 31, 2016:

	Recorded Investment of Loans Collectively Measured for Contingency Provision		Recorded Investment of Loans Individually Measured for Specific Impairment		Impaired Loans With Recorded Allowance						Impaired Loans Without Recorded Allowance
					Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance
September 30, 2017	(in thousands)
Commercial business:
Secured	$	2,614,647	$	21,399	$	—	$	—	$	—	$	21,399	$	26,655
Unsecured	93,924		—		—		—		—		—		—
Real estate:
One-to-four family residential	173,562		928		459		736		26		469		1,030
Commercial & multifamily residential:
Commercial land	283,355		2,299		—		—		—		2,299		2,287
Income property	1,378,127		4,771		519		523		25		4,252		4,570
Owner occupied	1,134,945		5,663		—		—		—		5,663		8,573
Real estate construction:
One-to-four family residential:
Land and acquisition	6,813		—		—		—		—		—		—
Residential construction	137,920		—		—		—		—		—		—
Commercial & multifamily residential:
Income property	172,112		—		—		—		—		—		—
Owner occupied	35,511		4,050		—		—		—		4,050		4,050
Consumer	315,038		6,465		5,692		5,982		51		773		914
Total	$	6,345,954	$	45,575	$	6,670	$	7,241	$	102	$	38,905	$	48,079
	Recorded Investment of Loans Collectively Measured for Contingency Provision		Recorded Investment of Loans Individually Measured for Specific Impairment		Impaired Loans With Recorded Allowance						Impaired Loans Without Recorded Allowance
					Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance
December 31, 2016	(in thousands)
Commercial business:
Secured	$	2,442,772	$	8,818	$	2,414	$	2,484	$	664	$	6,404	$	12,831
Unsecured	94,737		—		—		—		—		—		—
Real estate:
One-to-four family residential	167,403		529		435		693		12		94		291
Commercial & multifamily residential:
Commercial land	270,106		708		—		—		—		708		687
Income property	1,365,321		4,425		540		544		27		3,885		4,148
Owner occupied	1,054,564		5,414		—		—		—		5,414		8,102
Real estate construction:
One-to-four family residential:
Land and acquisition	11,542		14		14		102		1		—		—
Residential construction	109,293		336		—		—		—		336		336
Commercial & multifamily residential:
Income property	103,779		—		—		—		—		—		—
Owner occupied	103,480		—		—		—		—		—		—
Consumer	319,307		5,215		4,464		4,558		57		751		833
Total	$	6,042,304	$	25,459	$	7,867	$	8,381	$	761	$	17,592	$	27,228

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

	Three Months Ended September 30,								Nine Months Ended September 30,
	2017				2016				2017				2016
	Average Recorded Investment Impaired Loans		Interest Recognized on Impaired Loans		Average Recorded Investment Impaired Loans		Interest Recognized on Impaired Loans		Average Recorded Investment Impaired Loans		Interest Recognized on Impaired Loans		Average Recorded Investment Impaired Loans		Interest Recognized on Impaired Loans
	(in thousands)
Commercial business:
Secured	$	22,395	$	2	$	6,909	$	15	$	15,349	$	25	$	9,506	$	48
Unsecured	—		—		—		—		—		—		—		—
Real estate:
One-to-four family residential	856		15		617		5		688		37		796		8
Commercial & multifamily residential:
Commercial land	2,549		—		708		—		2,026		—		354		—
Income property	4,214		21		1,939		8		4,137		27		2,010		19
Owner occupied	4,530		127		4,486		—		4,496		319		5,001		—
Real estate construction:
One-to-four family residential:
Land and acquisition	—		—		103		1		4		—		245		4
Residential construction	—		—		449		—		84		—		506		—
Commercial & multifamily residential:
Owner occupied	2,025		151		—		—		1,012		151		—		—
Consumer	6,054		58		3,345		25		5,712		105		2,084		46
Total	$	42,623	$	374	$	18,556	$	54	$	33,508	$	664	$	20,502	$	125

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

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

	Three months ended September 30, 2017					Three months ended September 30, 2016
	Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment
	(dollars in thousands)
Commercial business:
Secured	2	$	808	$	808	2	$	90	$	90
Real estate:
One-to-four family residential	2	201		201		1	85		85
Commercial and multifamily residential:
Income property	1	1,152		1,152		—	—		—
Owner occupied	1	78		78		—	—		—
Real estate construction:
Commercial and multifamily residential:
Owner occupied	1	4,050		4,050		—	—		—
Consumer	17	1,672		1,672		10	731		731
Total	24	$	7,961	$	7,961	13	$	906	$	906

	Nine months ended September 30, 2017					Nine months ended September 30, 2016
	Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Number of TDR Modifications	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment
	(dollars in thousands)
Commercial business:
Secured	7	$	2,586	$	2,586	7	$	1,753	$	1,753
Real estate:
One-to-four family residential	3	583		583		2	115		115
Commercial and multifamily residential:
Income property	1	1,152		1,152		—	—		—
Owner occupied	1	78		78		1	250		250
Real estate construction:
Commercial and multifamily residential:
Owner occupied	1	4,050		4,050		—	—		—
Consumer	35	4,033		4,033		28	3,442		3,442
Total	48	$	12,482	$	12,482	38	$	5,560	$	5,560

Purchased Credit Impaired Loans [Member]

Financing Receivable, Recorded Investment [Line Items]

Analysis of Loan Portfolio by Major Types of Loans

The following is an analysis of our PCI loans, net of related allowance for losses and remaining valuation discounts as of September 30, 2017 and December 31, 2016:

	September 30, 2017		December 31, 2016
	(in thousands)
Commercial business	$	14,895	$	21,606
Real estate:
One-to-four family residential	16,698		20,643
Commercial and multifamily residential	83,082		94,795
Total real estate	99,780		115,438
Real estate construction:
One-to-four family residential	377		832
Commercial and multifamily residential	1,059		1,726
Total real estate construction	1,436		2,558
Consumer	13,039		17,649
Subtotal of PCI loans	129,150		157,251
Less:
Valuation discount resulting from acquisition accounting	8,673		11,591
Allowance for loan losses	7,344		10,515
PCI loans, net of allowance for loan losses	$	113,133	$	135,145

Changes in Accretable Yield for Acquired Loans

The following table shows the changes in accretable yield for PCI loans for the three and nine months ended September 30, 2017 and 2016:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
	(in thousands)
Balance at beginning of period	$	35,706		$	52,909		$	45,191		$	58,981
Accretion	(2,766		)	(4,902		)	(9,830		)	(12,905		)
Disposals	—			(178		)	(158		)	(157		)
Reclassifications from (to) nonaccretable difference	(892		)	1,034			(3,155		)	2,944
Balance at end of period	$	32,048		$	48,863		$	32,048		$	48,863

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

9 Months Ended

Sep. 30, 2017

Financing Receivable, Allowance for Credit Losses [Line Items]

Allowance for Credit Losses on Financing Receivables

The following tables show a detailed analysis of the allowance for the three and nine months ended September 30, 2017 and 2016:

	Beginning Balance		Charge-offs			Recoveries		Provision (Recovery)			Ending Balance		Specific Reserve		General Allocation
Three months ended September 30, 2017	(in thousands)
Commercial business:
Secured	$	39,539	$	(1,362	)	$	550	$	(969	)	$	37,758	$	—	$	37,758
Unsecured	1,147		—			138		(298		)	987		—		987
Real estate:
One-to-four family residential	628		—			40		3			671		26		645
Commercial & multifamily residential:
Commercial land	2,356		—			45		(97		)	2,304		—		2,304
Income property	6,854		—			9		241			7,104		25		7,079
Owner occupied	6,512		—			4		306			6,822		—		6,822
Real estate construction:
One-to-four family residential:
Land and acquisition	361		—			14		(83		)	292		—		292
Residential construction	1,377		—			6		(272		)	1,111		—		1,111
Commercial & multifamily residential:
Income property	985		—			—		279			1,264		—		1,264
Owner occupied	1,382		—			—		(87		)	1,295		—		1,295
Consumer	3,551		(263		)	343		42			3,673		51		3,622
Purchased credit impaired	8,061		(1,633		)	1,389		(473		)	7,344		—		7,344
Unallocated	231		—			—		760			991		—		991
Total	$	72,984	$	(3,258	)	$	2,538	$	(648	)	$	71,616	$	102	$	71,514
	Beginning Balance		Charge-offs			Recoveries		Provision (Recovery)			Ending Balance		Specific Reserve		General Allocation
Nine months ended September 30, 2017	(in thousands)
Commercial business:
Secured	$	36,050	$	(6,071	)	$	3,750	$	4,029		$	37,758	$	—	$	37,758
Unsecured	960		(18		)	247		(202		)	987		—		987
Real estate:
One-to-four family residential	599		(460		)	380		152			671		26		645
Commercial & multifamily residential:
Commercial land	1,797		—			45		462			2,304		—		2,304
Income property	7,342		—			104		(342		)	7,104		25		7,079
Owner occupied	6,439		—			114		269			6,822		—		6,822
Real estate construction:
One-to-four family residential:
Land and acquisition	316		(14		)	61		(71		)	292		—		292
Residential construction	669		—			46		396			1,111		—		1,111
Commercial & multifamily residential:
Income property	404		—			—		860			1,264		—		1,264
Owner occupied	1,192		—			—		103			1,295		—		1,295
Consumer	3,534		(1,156		)	876		419			3,673		51		3,622
Purchased credit impaired	10,515		(5,372		)	3,737		(1,536		)	7,344		—		7,344
Unallocated	226		—			—		765			991		—		991
Total	$	70,043	$	(13,091	)	$	9,360	$	5,304		$	71,616	$	102	$	71,514

	Beginning Balance		Charge-offs			Recoveries		Provision (Recovery)			Ending Balance		Specific Reserve		General Allocation
Three months ended September 30, 2016	(in thousands)
Commercial business:
Secured	$	31,808	$	(2,128	)	$	787	$	2,008		$	32,475	$	873	$	31,602
Unsecured	1,265		(31		)	67		(128		)	1,173		—		1,173
Real estate:
One-to-four family residential	675		—			81		221			977		353		624
Commercial & multifamily residential:
Commercial land	1,422		—			—		92			1,514		—		1,514
Income property	8,046		—			10		149			8,205		28		8,177
Owner occupied	6,336		—			10		487			6,833		—		6,833
Real estate construction:
One-to-four family residential:
Land and acquisition	587		—			2		(134		)	455		—		455
Residential construction	1,376		—			19		(393		)	1,002		—		1,002
Commercial & multifamily residential:
Income property	904		—			107		(480		)	531		—		531
Owner occupied	1,384		—			—		57			1,441		—		1,441
Consumer	3,559		(383		)	399		168			3,743		46		3,697
Purchased credit impaired	11,781		(2,062		)	2,216		(433		)	11,502		—		11,502
Unallocated	161		—			—		252			413		—		413
Total	$	69,304	$	(4,604	)	$	3,698	$	1,866		$	70,264	$	1,300	$	68,964
	Beginning Balance		Charge-offs			Recoveries		Provision (Recovery)			Ending Balance		Specific Reserve		General Allocation
Nine months ended September 30, 2016	(in thousands)
Commercial business:
Secured	$	32,321	$	(8,798	)	$	2,126	$	6,826		$	32,475	$	873	$	31,602
Unsecured	1,299		(75		)	143		(194		)	1,173		—		1,173
Real estate:
One-to-four family residential	916		(35		)	142		(46		)	977		353		624
Commercial & multifamily residential:
Commercial land	1,178		(26		)	2		360			1,514		—		1,514
Income property	6,616		—			191		1,398			8,205		28		8,177
Owner occupied	5,550		—			26		1,257			6,833		—		6,833
Real estate construction:
One-to-four family residential:
Land and acquisition	339		—			55		61			455		—		455
Residential construction	733		—			225		44			1,002		—		1,002
Commercial & multifamily residential:
Income property	388		—			109		34			531		—		531
Owner occupied	1,006		—			—		435			1,441		—		1,441
Consumer	3,531		(983		)	765		430			3,743		46		3,697
Purchased credit impaired	13,726		(7,826		)	5,291		311			11,502		—		11,502
Unallocated	569		—			—		(156		)	413		—		413
Total	$	68,172	$	(17,743	)	$	9,075	$	10,760		$	70,264	$	1,300	$	68,964

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					Nine Months Ended
	September 30,					September 30,
	2017			2016		2017		2016
	(in thousands)
Balance at beginning of period	$	3,555		$	2,780	$	2,705	$	2,930
Net changes in the allowance for unfunded commitments and letters of credit	(75		)	125		775		(25		)
Balance at end of period	$	3,480		$	2,905	$	3,480	$	2,905

Financing Receivable Credit Quality Indicators

The following is an analysis of the credit quality of our loan portfolio, excluding PCI loans, as of September 30, 2017 and December 31, 2016:

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
September 30, 2017	(in thousands)
Loans, excluding PCI loans:
Commercial business:
Secured	$	2,464,772	$	69,577	$	101,697	$	—	$	—	$	2,636,046
Unsecured	92,881		—		1,043		—		—		93,924
Real estate:
One-to-four family residential	171,362		1,195		1,933		—		—		174,490
Commercial and multifamily residential:
Commercial land	276,675		5,527		3,452		—		—		285,654
Income property	1,356,196		1,797		24,905		—		—		1,382,898
Owner occupied	1,101,139		14,275		25,194		—		—		1,140,608
Real estate construction:
One-to-four family residential:
Land and acquisition	6,787		—		26		—		—		6,813
Residential construction	135,965		406		1,549		—		—		137,920
Commercial and multifamily residential:
Income property	156,727		15,385		—		—		—		172,112
Owner occupied	35,511		—		4,050		—		—		39,561
Consumer	312,828		—		8,675		—		—		321,503
Total	$	6,110,843	$	108,162	$	172,524	$	—	$	—	6,391,529
Less:
Allowance for loan and lease losses											64,272
Loans, excluding PCI loans, net											$	6,327,257

	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 September 30, 2017 and December 31, 2016:

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
September 30, 2017	(in thousands)
PCI loans:
Commercial business:
Secured	$	13,353	$	—	$	761	$	—	$	—	$	14,114
Unsecured	714		—		67		—		—		781
Real estate:
One-to-four family residential	15,883		—		815		—		—		16,698
Commercial and multifamily residential:
Commercial land	9,854		—		—		—		—		9,854
Income property	26,174		—		—		—		—		26,174
Owner occupied	46,265		—		789		—		—		47,054
Real estate construction:
One-to-four family residential:
Land and acquisition	319		—		58		—		—		377
Commercial and multifamily residential:
Income property	773		—		—		—		—		773
Owner occupied	286		—		—		—		—		286
Consumer	12,321		—		718		—		—		13,039
Total	$	125,942	$	—	$	3,208	$	—	$	—	129,150
Less:
Valuation discount resulting from acquisition accounting											8,673
Allowance for loan losses											7,344
PCI loans, net											$	113,133

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

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Other Real Estate Owned (Tables)

9 Months Ended

Sep. 30, 2017

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

Summary of Other Real Estate Owned

The following tables set forth activity in OREO for the three and nine months ended September 30, 2017 and 2016:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
	(in thousands)
Balance, beginning of period	$	4,058		$	10,613		$	5,998		$	13,738
Transfers in	74			891			74			1,202
Valuation adjustments	(138		)	(14		)	(364		)	(290		)
Proceeds from sale of OREO property	(182		)	(2,569		)	(1,901		)	(5,845		)
Gain (loss) on sale of OREO, net	(130		)	73			(125		)	189
Balance, end of period	$	3,682		$	8,994		$	3,682		$	8,994

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Covered Assets and FDIC Loss-sharing Asset (Tables)

9 Months Ended

Sep. 30, 2017

Covered Assets And FDIC Loss Sharing Asset [Line Items]

FDIC Loss-sharing Asset

The following table shows a detailed analysis of the FDIC loss-sharing asset for the three and nine months ended September 30, 2017 and 2016:

	Three Months Ended September 30,					Nine Months Ended September 30,
	2017		2016			2017			2016
	(in thousands)
Balance at beginning of period	$	—	$	4,266		$	3,535		$	6,568
Adjustments not reflected in income:
Cash paid to (received from) the FDIC, net	—		20			184			(23		)
FDIC shared recoveries, net	—		(590		)	(149		)	(756		)
Termination of FDIC loss-sharing agreements	—		—			(3,123		)	—
Adjustments reflected in noninterest income (1):
Amortization, net	—		(315		)	(414		)	(2,530		)
Loan impairment	—		266			40			393
Sale of other real estate	—		(49		)	18			71
Valuation adjustments of other real estate owned	—		—			—			(22		)
Other	—		(6		)	(91		)	(109		)
Balance at end of period	$	—	$	3,592		$	—		$	3,592

__________

(1) Amounts shown in the table above for adjustments reflected in noninterest income include only those adjustments recorded to the noninterest income line item “Change in FDIC loss-sharing asset” in the Consolidated Statements of Income and do not include the charge related to the termination of the FDIC loss-sharing agreements.

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Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill and Intangible Assets

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

	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
	(in thousands)
Goodwill
Total goodwill	$	382,762		$	382,762		$	382,762		$	382,762
Other intangible assets, net
Core deposit intangible:
Gross core deposit intangible balance at beginning of period	58,598			58,598			58,598			58,598
Accumulated amortization at beginning of period	(44,484		)	(39,006		)	(41,886		)	(35,940		)
Core deposit intangible, net at beginning of period	14,114			19,592			16,712			22,658
CDI current period amortization	(1,188		)	(1,460		)	(3,786		)	(4,526		)
Total core deposit intangible, net at end of period	12,926			18,132			12,926			18,132
Intangible assets not subject to amortization	919			919			919			919
Other intangible assets, net at end of period	13,845			19,051			13,845			19,051
Total goodwill and other intangible assets at end of period	$	396,607		$	401,813		$	396,607		$	401,813

Estimated Future Amortization Expense of Core Deposit Intangibles

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

	Amount
	(in thousands)
Year ending December 31,
2017	$	1,127
2018	3,855
2019	2,951
2020	2,048
2021	1,440

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Derivatives and Balance Sheet Offsetting (Tables)

9 Months Ended

Sep. 30, 2017

Derivative [Line Items]

Balance Sheet Offsetting [Table Text Block]

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

	Gross Amounts of Recognized Assets/Liabilities		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Assets/Liabilities Presented in the Consolidated Balance Sheets		Gross Amounts Not Offset in the Consolidated Balance Sheets
							Collateral Posted			Net Amount
September 30, 2017	(in thousands)
Assets
Interest rate contracts	$	8,992	$	—	$	8,992	$	—		$	8,992
Liabilities
Interest rate contracts	$	9,004	$	—	$	9,004	$	(9,004	)	$	—
Repurchase agreements	$	40,933	$	—	$	40,933	$	(40,933	)	$	—
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:

	September 30, 2017
	(in thousands)
Washington and Oregon State to secure public deposits	$	242,188
Federal Reserve Bank to secure borrowings	54,723
Other securities pledged	122,392
Total securities pledged as collateral	$	419,303

Not Designated as Hedging Instrument [Member]

Derivative [Line Items]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

The following table presents the fair value of derivatives not designated as hedging instruments at September 30, 2017 and December 31, 2016:

Asset Derivatives

Liability Derivatives

September 30, 2017

December 31, 2016

September 30, 2017

December 31, 2016

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

(in thousands)

Interest rate contracts

Other assets

$

8,992

Other assets

$

9,012

Other liabilities

$

9,004

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
September 30, 2017	(in thousands)
Class of collateral pledged for repurchase agreements
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	15,933	$	—	$	—	$	25,000	$	40,933
Gross amount of recognized liabilities for repurchase agreements									40,933
Amounts related to agreements not included in offsetting disclosure									$	—

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Accumulated Other Comprehensive Income (Tables)

9 Months Ended

Sep. 30, 2017

Accumulated Other Comprehensive Income (Loss) [Abstract]

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

The following table shows changes in accumulated other comprehensive income (loss) by component for the three and nine month periods ended September 30, 2017 and 2016:

	Unrealized Gains and Losses on Available-for-Sale Securities (1)			Unrealized Gains and Losses on Pension Plan Liability (1)			Total (1)
Three months ended September 30, 2017	(in thousands)
Beginning balance	$	(4,969	)	$	(1,559	)	$	(6,528	)
Other comprehensive income before reclassifications	549			—			549
Amounts reclassified from accumulated other comprehensive income	—			46			46
Net current-period other comprehensive income	549			46			595
Ending balance	$	(4,420	)	$	(1,513	)	$	(5,933	)
Three months ended September 30, 2016
Beginning balance	$	27,280		$	(6,469	)	$	20,811
Other comprehensive loss before reclassifications	(4,049		)	—			(4,049		)
Amounts reclassified from accumulated other comprehensive income (loss)	(364		)	107			(257		)
Net current-period other comprehensive income (loss)	(4,413		)	107			(4,306		)
Ending balance	$	22,867		$	(6,362	)	$	16,505
Nine months ended September 30, 2017
Beginning balance	$	(12,704	)	$	(6,295	)	$	(18,999	)
Other comprehensive income before reclassifications	8,284			4,604			12,888
Amounts reclassified from accumulated other comprehensive income	—			178			178
Net current-period other comprehensive income	8,284			4,782			13,066
Ending balance	$	(4,420	)	$	(1,513	)	$	(5,933	)
Nine months ended September 30, 2016
Beginning balance	$	386		$	(6,681	)	$	(6,295	)
Other comprehensive income before reclassifications	23,229			—			23,229
Amounts reclassified from accumulated other comprehensive income (loss)	(748		)	319			(429		)
Net current-period other comprehensive income	22,481			319			22,800
Ending balance	$	22,867		$	(6,362	)	$	16,505

__________

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

Schedule of reclassifications from accumulated other comprehensive income [Table Text Block]

The following table shows details regarding the reclassifications from accumulated other comprehensive income (loss) for the three and nine month periods ended September 30, 2017 and 2016:

	Amount Reclassified from Accumulated Other Comprehensive Income (Loss)
	Three Months Ended September 30,						Nine Months Ended September 30,						Affected line Item in the Consolidated
	2017			2016			2017			2016			Statement of Income
	(in thousands)
Unrealized gains and losses on available-for-sale securities
Investment securities gains	$	—		$	572		$	—		$	1,174		Investment securities gains, net
	—			572			—			1,174			Total before tax
	—			(208		)	—			(426		)	Income tax provision
	$	—		$	364		$	—		$	748		Net of tax
Amortization of pension plan liability
Actuarial losses	$	(72	)	$	(167	)	$	(279	)	$	(501	)	Compensation and employee benefits
	(72		)	(167		)	(279		)	(501		)	Total before tax
	26			60			101			182			Income tax benefit
	$	(46	)	$	(107	)	$	(178	)	$	(319	)	Net of tax

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Fair Value Accounting and Measurement (Tables)

9 Months Ended

Sep. 30, 2017

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

Financial Assets And Liabilities Accounted For Fair Value On Recurring Basis

The following table sets forth the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis at September 30, 2017 and December 31, 2016 by level within the fair value hierarchy. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement:

	Fair value		Fair Value Measurements at Reporting Date Using
			Level 1		Level 2		Level 3
September 30, 2017	(in thousands)
Assets
Securities available for sale:
U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations	$	1,377,417	$	—	$	1,377,417	$	—
State and municipal debt securities	483,488		—		483,488		—
U.S. government agency and government-sponsored enterprise securities	341,604		—		341,604		—
U.S. government securities	250		250		—		—
Other securities	5,114		—		5,114		—
Total securities available for sale	$	2,207,873	$	250	$	2,207,623	$	—
Other assets (Interest rate contracts)	$	8,992	$	—	$	8,992	$	—
Liabilities
Other liabilities (Interest rate contracts)	$	9,004	$	—	$	9,004	$	—

	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 September 30, 2017		Fair Value Measurements at Reporting Date Using						Losses During the Three Months Ended September 30, 2017		Losses During the Nine Months Ended September 30, 2017
			Level 1		Level 2		Level 3
	(in thousands)
Impaired loans	$	843	$	—	$	—	$	843	$	170	$	170
OREO	625		—		—		625		138		138
	$	1,468	$	—	$	—	$	1,468	$	308	$	308

	Fair value at September 30, 2016		Fair Value Measurements at Reporting Date Using						Losses During the Three Months Ended September 30, 2016		Losses During the Nine Months Ended September 30, 2016
			Level 1		Level 2		Level 3
	(in thousands)
Impaired loans	$	2,304	$	—	$	—	$	2,304	$	647	$	3,285
OREO	335		—		—		335		14		14
	$	2,639	$	—	$	—	$	2,639	$	661	$	3,299

Fair Value, by Balance Sheet Grouping

The following tables summarize carrying amounts and estimated fair values of selected financial instruments as well as assumptions used by the Company in estimating fair value at September 30, 2017 and December 31, 2016:

	September 30, 2017
	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
	(in thousands)
Assets
Cash and due from banks	$	186,116	$	186,116	$	186,116	$	—	$	—
Interest-earning deposits with banks	136,578		136,578		136,578		—		—
Securities available for sale	2,207,873		2,207,873		250		2,207,623		—
FHLB stock	10,240		10,240		—		10,240		—
Loans held for sale	7,802		7,802		—		7,802		—
Loans	6,440,390		6,309,449		—		—		6,309,449
Interest rate contracts	8,992		8,992		—		8,992		—
Liabilities
Deposits	$	8,341,717	$	8,337,145	$	7,960,870	$	376,275	$	—
FHLB advances	6,465		7,367		—		7,367		—
Repurchase agreements	40,933		40,987		—		40,987		—
Interest rate contracts	9,004		9,004		—		9,004		—

	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 September 30, 2017		Valuation Technique	Unobservable Input	Range (Weighted Average) (1)
	(dollars in thousands)
Impaired loans - collateral-dependent (3)	$	715	Fair Market Value of Collateral	Adjustment to Stated Value	N/A (2)
Impaired loans - other (4)	$	128	Discounted Cash Flow	Discount Rate	7.75%
OREO	$	625	Fair Market Value of Collateral	Adjustment to Appraisal Value	N/A (2)
(1) Discount rate used in discounted cash flow valuation.
(2) Quantitative disclosures are not provided for collateral-dependent impaired loans and OREO because there were no adjustments made to the appraisal values or stated values during the current period.
(3) Collateral consists of a government agency guarantee.
(4) As there was only one impaired loan remeasured using discounted cash flows, a range of discounts could not be provided.

	Fair value at September 30, 2016		Valuation Technique	Unobservable Input	Range (Weighted Average) (1)
	(dollars in thousands)
Impaired loans - collateral-dependent (3)	$	943	Fair Market Value of Collateral	Adjustment to Stated Value	N/A (2)
Impaired loans - other	$	1,361	Discounted Cash Flow	Discount Rate	2.85% - 6.50% (3.85%)
OREO	$	335	Fair Market Value of Collateral	Adjustment to Appraisal Value	N/A (2)
(1) Discount rate used in discounted cash flow valuation.
(2) Quantitative disclosures are not provided for collateral-dependent impaired loans and OREO because there were no adjustments made to the appraisal values or stated values during the current period.
(3) Collateral consists of fixed assets and accounts receivable.

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Earnings per Common Share (Tables)

9 Months Ended

Sep. 30, 2017

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Earnings Per Share

The following table sets forth the computation of basic and diluted earnings per share for the three and nine months ended September 30, 2017 and 2016:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2017		2016		2017		2016
	(in thousands except per share)
Basic EPS:
Net income	$	40,769	$	27,484	$	97,100	$	74,148
Less: Earnings allocated to participating securities:
Preferred shares	—		48		4		131
Nonvested restricted shares	558		378		1,325		953
Earnings allocated to common shareholders	$	40,211	$	27,058	$	95,771	$	73,064
Weighted average common shares outstanding	57,566		57,215		57,459		57,173
Basic earnings per common share	$	0.70	$	0.47	$	1.67	$	1.28
Diluted EPS:
Earnings allocated to common shareholders	$	40,211	$	27,058	$	95,771	$	73,064
Weighted average common shares outstanding	57,566		57,215		57,459		57,173
Dilutive effect of equity awards	5		10		6		10
Weighted average diluted common shares outstanding	57,571		57,225		57,465		57,183
Diluted earnings per common share	$	0.70	$	0.47	$	1.67	$	1.28
Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive	12		15		13		20

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Basis of Presentation and Significant Accounting Policies Narrative (Details) - USD ($)	3 Months Ended			9 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Gain on sale of merchant card services portfolio	$ 14,000,000		$ 0	$ 14,000,000	$ 0
Merchant Card Services Agreement [Member]
Net carrying amount of merchant card services portfolio upon sale		$ 0
Net revenue share - merchant card services	438,000
Gain on sale of merchant card services portfolio	$ 14,000,000

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Accounting Pronouncements Recently Issued Narrative - Impact of implementation of new accounting standards (Details) - Accounting Standards Update 2016-09 [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017	Dec. 31, 2016
Cumulative Effect of New Accounting Principle in Period of Adoption			$ 67
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income	$ 22	$ 1,300
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Diluted Earnings Per Share		$ 0.02
Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption			(117)
Common Stock [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption			$ 184

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Securities (Securities Available for Sale) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds	$ 0	$ 37,390	$ 0	$ 120,800
Securities available-for-sale, amortized cost	2,215,335		2,215,335		$ 2,299,037
Available-for-sale Debt Securities Gross Unrealized Gain, instant	13,644		13,644		10,231
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(21,106)		(21,106)		(30,691)
Securities available for sale	2,207,873		2,207,873		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	1,391,636		1,391,636		1,486,690
Available-for-sale Debt Securities Gross Unrealized Gain, instant	3,143		3,143		2,760
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(17,362)		(17,362)		(23,718)
Securities available for sale	1,377,417		1,377,417		1,465,732
State and Municipal Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, amortized cost	476,702		476,702		473,914
Available-for-sale Debt Securities Gross Unrealized Gain, instant	9,047		9,047		6,343
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(2,261)		(2,261)		(5,197)
Securities available for sale	483,488		483,488		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	341,462		341,462		332,348
Available-for-sale Debt Securities Gross Unrealized Gain, instant	1,372		1,372		1,065
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(1,230)		(1,230)		(1,511)
Securities available for sale	341,604		341,604		331,902
US Government Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, amortized cost	251		251		801
Available-for-sale Debt Securities Gross Unrealized Gain, instant	0		0		0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(1)		(1)		(1)
Securities available for sale	250		250		800
Other Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, amortized cost	5,284		5,284		5,284
Available-for-sale Debt Securities Gross Unrealized Gain, instant	82		82		63
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(252)		(252)		(264)
Securities available for sale	$ 5,114		$ 5,114		$ 5,083

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Securities (Schedule of Contractual Maturities of Investment Securities Available for Sale) (Details) $ in Thousands	Sep. 30, 2017 USD ($)
Available-for-sale Securities [Abstract]
Due within one year, Amortized Cost	$ 108,477
Due after one year through five years, Amortized Cost	506,439
Due after five years through ten years, Amortized Cost	672,288
Due after ten years, Amortized Cost	922,847
No stated maturity date, Amortized Cost Basis	5,284
Total investment securities available-for-sale, Amortized Cost	2,215,335
Due within one year, Fair Value	108,462
Due after one year through five years, Fair Value	509,784
Due after five years through ten years, Fair Value	671,188
Due after ten years, Fair Value	913,325
No stated maturity date, Fair Value	5,114
Total investment securities available-for-sale, Fair Value	$ 2,207,873

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Securities (Carrying Value of Securities Pledged as Collateral) (Details) $ in Thousands	Sep. 30, 2017 USD ($)
Schedule of Available-for-sale Securities [Line Items]
Carrying amount of securities pledged as collateral	$ 419,303
Washington and Oregon State Public Deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Carrying amount of securities pledged as collateral	242,188
Federal Reserve Bank Advances [Member]
Schedule of Available-for-sale Securities [Line Items]
Carrying amount of securities pledged as collateral	54,723
Other Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Carrying amount of securities pledged as collateral	$ 122,392

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Securities (Summary of Gross Unrealized Losses and Fair Value of the Investments with Unrealized Losses) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities Gross Unrealized Gain, instant	$ 13,644	$ 10,231
Less than 12 Months Fair Value	788,216	1,461,783
Less than 12 Months Unrealized Losses	(6,167)	(25,415)
12 Months or More Fair Value	525,915	165,173
12 Months or More Unrealized Losses	(14,939)	(5,276)
Total Fair Value	1,314,131	1,626,956
Total Unrealized Losses	(21,106)	(30,691)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	21,106	30,691
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities Gross Unrealized Gain, instant	3,143	2,760
Less than 12 Months Fair Value	537,162	1,029,116
Less than 12 Months Unrealized Losses	(4,765)	(18,788)
12 Months or More Fair Value	456,330	159,046
12 Months or More Unrealized Losses	(12,597)	(4,930)
Total Fair Value	993,492	1,188,162
Total Unrealized Losses	(17,362)	(23,718)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	17,362	23,718
State and Municipal Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities Gross Unrealized Gain, instant	9,047	6,343
Less than 12 Months Fair Value	75,499	211,342
Less than 12 Months Unrealized Losses	(700)	(5,064)
12 Months or More Fair Value	45,328	3,384
12 Months or More Unrealized Losses	(1,561)	(133)
Total Fair Value	120,827	214,726
Total Unrealized Losses	(2,261)	(5,197)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	2,261	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	1,372	1,065
Less than 12 Months Fair Value	173,027	218,811
Less than 12 Months Unrealized Losses	(665)	(1,511)
12 Months or More Fair Value	21,517	0
12 Months or More Unrealized Losses	(565)	0
Total Fair Value	194,544	218,811
Total Unrealized Losses	(1,230)	(1,511)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	1,230	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	250	251
Less than 12 Months Unrealized Losses	(1)	(1)
12 Months or More Fair Value	0	0
12 Months or More Unrealized Losses	0	0
Total Fair Value	250	251
Total Unrealized Losses	(1)	(1)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	1	1
Other Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities Gross Unrealized Gain, instant	82	63
Less than 12 Months Fair Value	2,278	2,263
Less than 12 Months Unrealized Losses	(36)	(51)
12 Months or More Fair Value	2,740	2,743
12 Months or More Unrealized Losses	(216)	(213)
Total Fair Value	5,018	5,006
Total Unrealized Losses	(252)	(264)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	$ 252	$ 264

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Securities (Narrative) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($) security	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) security	Sep. 30, 2016 USD ($)
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds | $	$ 0	$ 37,390	$ 0	$ 120,800
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	168		168
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year	84		84
Municipal Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	107		107
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year	40		40
U.S. Government and Government-Sponsored Enterprise Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	22		22
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year	5		5
US Government Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Number Of Securities In Continuous Loss Position For Twelve Months or More	0		0
Number Of Securities In Unrealized Loss Position	1		1
Other Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	2		2
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year	1		1

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Securities Securities (Summary of Gross Realized Gains and Gross Realized Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds	$ 0	$ 37,390	$ 0	$ 120,800
Available-for-sale Securities, Gross Realized Gains	0	572	0	1,174
Available-for-sale Securities, Gross Realized Losses	0	0	0	0
Investment securities gains, net	$ 0	$ 572	$ 0	$ 1,174

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Loans (Narrative) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($) contract	Sep. 30, 2016 contract	Sep. 30, 2017 USD ($) contract	Sep. 30, 2016 contract	Dec. 31, 2016 USD ($)
Financing Receivable, Recorded Investment [Line Items]
Loans to related parties	$ 10,100		$ 10,100		$ 10,100
Loans and Leases Receivable, Related Parties, Additions			203
Repayments on related party loans			$ 253
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract	0	0	0	0
Loans Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	$ 2,260,000		$ 2,260,000		2,290,000
Federal Reserve Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	$ 69,800		$ 69,800		$ 54,200

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Loans (Analysis of Loan Portfolio by Major Types of Loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]
Less: unearned income on loans	$ (29,229)		$ (33,718)
Recorded Investment	6,512,006		6,213,423
Allowance for loan losses	(71,616)	$ (72,984)	(70,043)	$ (70,264)	$ (69,304)	$ (68,172)
Loans, net	6,440,390		6,143,380
Loans held for sale	7,802		5,846
Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Less: unearned income on loans	(29,229)		(33,718)
Recorded Investment	6,391,529		6,067,763
Allowance for loan losses	(64,272)		(59,528)
Loans, net	6,327,257		6,008,235
Loans held for sale	7,802		5,846
Loans and Leases Receivable, Gross	6,391,529		6,067,763
Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Less: unearned income on loans	0		0
Recorded Investment	120,477		145,660
Allowance for loan losses	(7,344)		(10,515)
Loans, net	113,133		135,145
Loans held for sale	0		0
Loans and Leases Receivable, Gross	129,150		157,251
Acquisition Accounting Valuation Discount on Covered Loans	8,673		11,591
Commercial and Multifamily Residential Construction [Domain] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	1,059		1,726
One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Consumer, Mortgage	190,812		188,193
Loans and Leases Receivable, Gross, Consumer, Construction	145,796		122,719
Allowance for loan losses	(671)	(628)	(599)	(977)	(675)	(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	176,487		170,331
Loans and Leases Receivable, Gross, Consumer, Construction	145,419		121,887
Loans and Leases Receivable, Gross	174,490		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	14,325		17,862
Loans and Leases Receivable, Gross, Consumer, Construction	377		832
Loans and Leases Receivable, Gross	16,698		20,643
Commercial and Multifamily Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Gross, Commercial, Mortgage	2,905,130		2,809,061
Loans Receivable, Gross, Commercial, Construction	214,897		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	2,825,794		2,719,830
Loans Receivable, Gross, Commercial, Construction	213,939		209,118
Commercial and Multifamily Residential [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Gross, Commercial, Mortgage	79,336		89,231
Loans Receivable, Gross, Commercial, Construction	958		1,565
Loans and Leases Receivable, Gross	83,082		94,795
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Gross, Commercial and Industrial	2,748,868		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	2,735,206		2,551,054
Commercial Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Gross, Commercial and Industrial	13,662		20,185
Loans and Leases Receivable, Gross	14,895		21,606
Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Real Estate Mortgage	3,095,942		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	3,002,281		2,890,161
Real Estate Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Real Estate Mortgage	93,661		107,093
Loans and Leases Receivable, Gross	99,780		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	377		832
Real Estate Construction Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Real Estate Construction	360,693		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	359,358		331,005
Real Estate Construction Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Real Estate Construction	1,335		2,397
Loans and Leases Receivable, Gross	1,436		2,558
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Consumer	335,732		345,246
Allowance for loan losses	(3,673)	$ (3,551)	(3,534)	$ (3,743)	$ (3,559)	$ (3,531)
Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Consumer	323,913		329,261
Loans and Leases Receivable, Gross	321,503		324,522
Consumer Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Consumer	11,819		15,985
Loans and Leases Receivable, Gross	$ 13,039		$ 17,649

XML

Loans (Analysis of Nonaccrual Loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	$ 40,317	$ 27,756
Unpaid Principal Balance Nonaccrual Loans	60,921	42,289
Secured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	25,187	11,524
Unpaid Principal Balance Nonaccrual Loans	35,843	21,503
Unsecured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	26	31
Unpaid Principal Balance Nonaccrual Loans	1,342	303
One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	816	568
Unpaid Principal Balance Nonaccrual Loans	2,904	1,302
Commercial Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	2,333	934
Unpaid Principal Balance Nonaccrual Loans	2,629	922
Income Property Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	3,586	4,005
Unpaid Principal Balance Nonaccrual Loans	4,702	4,247
Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	3,224	6,248
Unpaid Principal Balance Nonaccrual Loans	4,712	9,030
Land And Acquisition [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	26	14
Unpaid Principal Balance Nonaccrual Loans	803	102
Residential Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	213	549
Unpaid Principal Balance Nonaccrual Loans	2,568	549
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	4,906	3,883
Unpaid Principal Balance Nonaccrual Loans	$ 5,418	$ 4,331

XML

Loans (Analysis of the Aged Loan Portfolio) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	$ 40,317	$ 27,756
Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	6,339,003	6,031,078
Past Due Loans	12,209	8,929
Nonaccrual Loans	40,317	27,756
Loans Receivable, Net	6,391,529	6,067,763
Secured Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	25,187	11,524
Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	2,607,265	2,439,250
Past Due Loans	3,594	816
Nonaccrual Loans	25,187	11,524
Loans Receivable, Net	2,636,046	2,451,590
Unsecured Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	26	31
Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	93,879	94,118
Past Due Loans	19	588
Nonaccrual Loans	26	31
Loans Receivable, Net	93,924	94,737
One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	816	568
One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	171,936	164,416
Past Due Loans	1,738	2,948
Nonaccrual Loans	816	568
Loans Receivable, Net	174,490	167,932
Commercial Land [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	2,333	934
Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	283,321	269,816
Past Due Loans	0	64
Nonaccrual Loans	2,333	934
Loans Receivable, Net	285,654	270,814
Income Property Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	3,586	4,005
Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	1,375,163	1,365,150
Past Due Loans	4,149	591
Nonaccrual Loans	3,586	4,005
Loans Receivable, Net	1,382,898	1,369,746
Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	3,224	6,248
Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	1,135,584	1,052,078
Past Due Loans	1,800	1,652
Nonaccrual Loans	3,224	6,248
Loans Receivable, Net	1,140,608	1,059,978
Land And Acquisition [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	26	14
Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	6,787	11,542
Past Due Loans	0	0
Nonaccrual Loans	26	14
Loans Receivable, Net	6,813	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	137,707	109,080
Past Due Loans	0	0
Nonaccrual Loans	213	549
Loans Receivable, Net	137,920	109,629
Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	172,112	103,779
Past Due Loans	0	0
Nonaccrual Loans	0	0
Loans Receivable, Net	172,112	103,779
Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	39,561	103,480
Past Due Loans	0	0
Nonaccrual Loans	0	0
Loans Receivable, Net	39,561	103,480
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual Loans	4,906	3,883
Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	315,688	318,369
Past Due Loans	909	2,270
Nonaccrual Loans	4,906	3,883
Loans Receivable, Net	321,503	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	6,131	1,157
Financing Receivables, 60 to 89 Days Past Due [Member] | Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	1,302	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	18	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	1,408	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	2,656	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	390	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	357	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	6,078	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	2,292	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	1	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	330	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	1,493	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	1,410	1,652
Financing Receivables, 30 to 59 Days Past Due [Member] | Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	0	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due Loans	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	552	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		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	$ 6,345,954		$ 6,345,954		$ 6,042,304
Recorded Investment of Loans Individually Measured for Specific Impairment	45,575		45,575		25,459
Recorded Investment	38,905		38,905		17,592
Unpaid Principal Balance	48,079		48,079		27,228
Related Allowance	102		102		761
Average Recorded Investment Impaired Loans	42,623	$ 18,556	33,508	$ 20,502
Interest Recognized on Impaired Loans	374	54	664	125
Secured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	2,614,647		2,614,647		2,442,772
Recorded Investment of Loans Individually Measured for Specific Impairment	21,399		21,399		8,818
Recorded Investment	0		0		2,414
Unpaid Principal Balance	0		0		2,484
Related Allowance	0		0		664
Average Recorded Investment Impaired Loans	22,395	6,909	15,349	9,506
Interest Recognized on Impaired Loans	2	15	25	48
Unsecured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	93,924		93,924		94,737
Recorded Investment of Loans Individually Measured for Specific Impairment	0		0		0
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Average Recorded Investment Impaired Loans	0	0	0	0
Interest Recognized on Impaired Loans	0	0	0	0
One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	173,562		173,562		167,403
Recorded Investment of Loans Individually Measured for Specific Impairment	928		928		529
Recorded Investment	459		459		435
Unpaid Principal Balance	736		736		693
Related Allowance	26		26		12
Average Recorded Investment Impaired Loans	856	617	688	796
Interest Recognized on Impaired Loans	15	5	37	8
Commercial Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	283,355		283,355		270,106
Recorded Investment of Loans Individually Measured for Specific Impairment	2,299		2,299		708
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Average Recorded Investment Impaired Loans	2,549	708	2,026	354
Interest Recognized on Impaired Loans	0	0	0	0
Income Property Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	1,378,127		1,378,127		1,365,321
Recorded Investment of Loans Individually Measured for Specific Impairment	4,771		4,771		4,425
Recorded Investment	519		519		540
Unpaid Principal Balance	523		523		544
Related Allowance	25		25		27
Average Recorded Investment Impaired Loans	4,214	1,939	4,137	2,010
Interest Recognized on Impaired Loans	21	8	27	19
Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	1,134,945		1,134,945		1,054,564
Recorded Investment of Loans Individually Measured for Specific Impairment	5,663		5,663		5,414
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Average Recorded Investment Impaired Loans	4,530	4,486	4,496	5,001
Interest Recognized on Impaired Loans	127	0	319	0
Land And Acquisition [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	6,813		6,813		11,542
Recorded Investment of Loans Individually Measured for Specific Impairment	0		0		14
Recorded Investment	0		0		14
Unpaid Principal Balance	0		0		102
Related Allowance	0		0		1
Average Recorded Investment Impaired Loans	0	103	4	245
Interest Recognized on Impaired Loans	0	1	0	4
Residential Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	137,920		137,920		109,293
Recorded Investment of Loans Individually Measured for Specific Impairment	0		0		336
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Average Recorded Investment Impaired Loans	0	449	84	506
Interest Recognized on Impaired Loans	0	0	0	0
Income Property Multifamily Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	172,112		172,112		103,779
Recorded Investment of Loans Individually Measured for Specific Impairment	0		0		0
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Owner Occupied Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	35,511		35,511		103,480
Recorded Investment of Loans Individually Measured for Specific Impairment	4,050		4,050		0
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance	0		0		0
Average Recorded Investment Impaired Loans	2,025	0	1,012	0
Interest Recognized on Impaired Loans	151	0	151	0
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	315,038		315,038		319,307
Recorded Investment of Loans Individually Measured for Specific Impairment	6,465		6,465		5,215
Recorded Investment	5,692		5,692		4,464
Unpaid Principal Balance	5,982		5,982		4,558
Related Allowance	51		51		57
Average Recorded Investment Impaired Loans	6,054	3,345	5,712	2,084
Interest Recognized on Impaired Loans	58	$ 25	105	$ 46
Impaired Loans With Recorded Allowance [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	6,670		6,670		7,867
Unpaid Principal Balance	7,241		7,241		8,381
Impaired Loans Without Recorded Allowance [Member] | Secured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	21,399		21,399		6,404
Unpaid Principal Balance	26,655		26,655		12,831
Impaired Loans Without Recorded Allowance [Member] | Unsecured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Impaired Loans Without Recorded Allowance [Member] | One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	469		469		94
Unpaid Principal Balance	1,030		1,030		291
Impaired Loans Without Recorded Allowance [Member] | Commercial Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	2,299		2,299		708
Unpaid Principal Balance	2,287		2,287		687
Impaired Loans Without Recorded Allowance [Member] | Income Property Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	4,252		4,252		3,885
Unpaid Principal Balance	4,570		4,570		4,148
Impaired Loans Without Recorded Allowance [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	5,663		5,663		5,414
Unpaid Principal Balance	8,573		8,573		8,102
Impaired Loans Without Recorded Allowance [Member] | Land And Acquisition [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Impaired Loans Without Recorded Allowance [Member] | Residential Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	0		0		336
Unpaid Principal Balance	0		0		336
Impaired Loans Without Recorded Allowance [Member] | Income Property Multifamily Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Impaired Loans Without Recorded Allowance [Member] | Owner Occupied Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	4,050		4,050		0
Unpaid Principal Balance	4,050		4,050		0
Impaired Loans Without Recorded Allowance [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	773		773		751
Unpaid Principal Balance	$ 914		$ 914		$ 833

XML

Loans Loans (Analysis of Troubled Debt Restructurings) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($) Modifications contract	Sep. 30, 2016 USD ($) Modifications contract	Sep. 30, 2017 USD ($) Modifications contract	Sep. 30, 2016 USD ($) Modifications contract	Dec. 31, 2016 USD ($)
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract	0	0	0	0
Loans and Leases Receivable, Related Parties	$ 10,100		$ 10,100		$ 10,100
Financing Receivable Modifications Additional Commitment To Lend	$ 529		$ 529		$ 508
Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Modifications	24	13	48	38
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 7,961	$ 906	$ 12,482	$ 5,560
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 7,961	$ 906	$ 12,482	$ 5,560
Loans, Excluding Purchased Credit Impaired Loans [Member] | Secured Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Modifications	2	2	7	7
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 808	$ 90	$ 2,586	$ 1,753
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 808	$ 90	$ 2,586	$ 1,753
Loans, Excluding Purchased Credit Impaired Loans [Member] | One-to-Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Modifications	2	1	3	2
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 201	$ 85	$ 583	$ 115
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 201	$ 85	$ 583	$ 115
Loans, Excluding Purchased Credit Impaired Loans [Member] | Income Property Multifamily [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Modifications	1	0	1	0
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 1,152	$ 0	$ 1,152	$ 0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,152	$ 0	$ 1,152	$ 0
Loans, Excluding Purchased Credit Impaired Loans [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Modifications	1	0	1	1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 78	$ 0	$ 78	$ 250
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 78	$ 0	$ 78	$ 250
Loans, Excluding Purchased Credit Impaired Loans [Member] | Owner Occupied Construction [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Modifications	1	0	1	0
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 4,050	$ 0	$ 4,050	$ 0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 4,050	$ 0	$ 4,050	$ 0
Loans, Excluding Purchased Credit Impaired Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Modifications	17	10	35	28
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 1,672	$ 731	$ 4,033	$ 3,442
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,672	$ 731	$ 4,033	$ 3,442

XML

Loans Loans (Analysis of Purchased Credit Impaired Loans - Accretable Yield Rollforward) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 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	$ 32,048	$ 48,863	$ 32,048	$ 48,863	$ 35,706	$ 45,191	$ 52,909	$ 58,981
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion	2,766	4,902	9,830	12,905
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Disposals of Loans	0	178	158	157
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference	$ (892)	$ 1,034	$ (3,155)	$ 2,944

XML

Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision (recapture) for loan and lease losses	$ (648)	$ 1,866	$ 5,304	$ 10,760

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		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 72,984	$ 69,304	$ 70,043	$ 68,172
Charged-offs	(3,258)	(4,604)	(13,091)	(17,743)
Recoveries	2,538	3,698	9,360	9,075
Provision (recapture) for loan and lease losses	(648)	1,866	5,304	10,760
Ending balance	71,616	70,264	71,616	70,264
Specific Reserve	102	1,300	102	1,300
General Allocation	71,514	68,964	71,514	68,964
Secured Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	39,539	31,808	36,050	32,321
Charged-offs	(1,362)	(2,128)	(6,071)	(8,798)
Recoveries	550	787	3,750	2,126
Provision (recapture) for loan and lease losses	(969)	2,008	4,029	6,826
Ending balance	37,758	32,475	37,758	32,475
Specific Reserve	0	873	0	873
General Allocation	37,758	31,602	37,758	31,602
Unsecured Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,147	1,265	960	1,299
Charged-offs	0	(31)	(18)	(75)
Recoveries	138	67	247	143
Provision (recapture) for loan and lease losses	(298)	(128)	(202)	(194)
Ending balance	987	1,173	987	1,173
Specific Reserve	0	0	0	0
General Allocation	987	1,173	987	1,173
One-to-Four Family Residential [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	628	675	599	916
Charged-offs	0	0	(460)	(35)
Recoveries	40	81	380	142
Provision (recapture) for loan and lease losses	3	221	152	(46)
Ending balance	671	977	671	977
Specific Reserve	26	353	26	353
General Allocation	645	624	645	624
Commercial Land [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	2,356	1,422	1,797	1,178
Charged-offs	0	0	0	(26)
Recoveries	45	0	45	2
Provision (recapture) for loan and lease losses	(97)	92	462	360
Ending balance	2,304	1,514	2,304	1,514
Specific Reserve	0	0	0	0
General Allocation	2,304	1,514	2,304	1,514
Income Property Multifamily [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	6,854	8,046	7,342	6,616
Charged-offs	0	0	0	0
Recoveries	9	10	104	191
Provision (recapture) for loan and lease losses	241	149	(342)	1,398
Ending balance	7,104	8,205	7,104	8,205
Specific Reserve	25	28	25	28
General Allocation	7,079	8,177	7,079	8,177
Owner Occupied [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	6,512	6,336	6,439	5,550
Charged-offs	0	0	0	0
Recoveries	4	10	114	26
Provision (recapture) for loan and lease losses	306	487	269	1,257
Ending balance	6,822	6,833	6,822	6,833
Specific Reserve	0	0	0	0
General Allocation	6,822	6,833	6,822	6,833
Land And Acquisition [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	361	587	316	339
Charged-offs	0	0	(14)	0
Recoveries	14	2	61	55
Provision (recapture) for loan and lease losses	(83)	(134)	(71)	61
Ending balance	292	455	292	455
Specific Reserve	0	0	0	0
General Allocation	292	455	292	455
Residential Construction [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,377	1,376	669	733
Charged-offs	0	0	0	0
Recoveries	6	19	46	225
Provision (recapture) for loan and lease losses	(272)	(393)	396	44
Ending balance	1,111	1,002	1,111	1,002
Specific Reserve	0	0	0	0
General Allocation	1,111	1,002	1,111	1,002
Income Property Multifamily Construction [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	985	904	404	388
Charged-offs	0	0	0	0
Recoveries	0	107	0	109
Provision (recapture) for loan and lease losses	279	(480)	860	34
Ending balance	1,264	531	1,264	531
Specific Reserve	0	0	0	0
General Allocation	1,264	531	1,264	531
Owner Occupied Construction [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,382	1,384	1,192	1,006
Charged-offs	0	0	0	0
Recoveries	0	0	0	0
Provision (recapture) for loan and lease losses	(87)	57	103	435
Ending balance	1,295	1,441	1,295	1,441
Specific Reserve	0	0	0	0
General Allocation	1,295	1,441	1,295	1,441
Consumer Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	3,551	3,559	3,534	3,531
Charged-offs	(263)	(383)	(1,156)	(983)
Recoveries	343	399	876	765
Provision (recapture) for loan and lease losses	42	168	419	430
Ending balance	3,673	3,743	3,673	3,743
Specific Reserve	51	46	51	46
General Allocation	3,622	3,697	3,622	3,697
Purchased Credit Impaired Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	8,061	11,781	10,515	13,726
Charged-offs	(1,633)	(2,062)	(5,372)	(7,826)
Recoveries	1,389	2,216	3,737	5,291
Provision (recapture) for loan and lease losses	(473)	(433)	(1,536)	311
Ending balance	7,344	11,502	7,344	11,502
Specific Reserve	0	0	0	0
General Allocation	7,344	11,502	7,344	11,502
Unallocated Financing Receivables [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	231	161	226	569
Charged-offs	0	0	0	0
Recoveries	0	0	0	0
Provision (recapture) for loan and lease losses	760	252	765	(156)
Ending balance	991	413	991	413
Specific Reserve	0	0	0	0
General Allocation	$ 991	$ 413	$ 991	$ 413

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		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Allowance For Loan And Lease Losses And Unfunded Loan Commitments And Letters Of Credit
Beginning balance	$ 3,555	$ 2,780	$ 2,705	$ 2,930
Allowance for Loan and Lease Losses, Net Changes In Unfunded Commitments and Letters Of Credit Allowance	(75)	125	775	(25)
Ending balance	$ 3,480	$ 2,905	$ 3,480	$ 2,905

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	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	$ 71,616	$ 72,984	$ 70,043	$ 70,264	$ 69,304	$ 68,172
Loans, net	6,440,390		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	6,391,529		6,067,763
Less: allowance for loan and lease losses	64,272		59,528
Loans, net	6,327,257		6,008,235
Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	129,150		157,251
Acquisition Accounting Valuation Discount on Purchased Credit Impaired Loans	8,673		11,591
Less: allowance for loan and lease losses	7,344		10,515
Loans, net	113,133		135,145
Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	6,110,843		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	125,942		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	108,162		94,867
Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		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	172,524		151,942
Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	3,208		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	37,758	39,539	36,050	32,475	31,808	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	2,636,046		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	14,114		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	2,464,772		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	13,353		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	69,577		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	0		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	101,697		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	761		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	987	1,147	960	1,173	1,265	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	93,924		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	781		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	92,881		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	714		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	0		800
Unsecured Loans [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Unsecured Loans [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,043		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	67		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	671	628	599	977	675	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	174,490		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	16,698		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	171,362		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	15,883		19,293
One-to-Four Family Residential [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,195		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	1,933		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	815		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	2,304	2,356	1,797	1,514	1,422	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	285,654		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	9,854		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	276,675		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	9,854		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	5,527		3,228
Commercial Land [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Commercial Land [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	3,452		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	7,104	6,854	7,342	8,205	8,046	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	1,382,898		1,369,746
Income Property Multifamily [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	26,174		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	1,356,196		1,341,978
Income Property Multifamily [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	26,174		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	1,797		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	24,905		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	0		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	6,822	6,512	6,439	6,833	6,336	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	1,140,608		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	47,054		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	1,101,139		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	46,265		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	14,275		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	25,194		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	789		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	292	361	316	455	587	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	6,813		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	377		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	6,787		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	319		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	26		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	58		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	1,111	1,377	669	1,002	1,376	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	137,920		109,629
Residential Construction [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	135,965		108,941
Residential Construction [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	406		0
Residential Construction [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,549		688
Residential Construction [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Residential Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan and lease losses	1,264	985	404	531	904	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	172,112		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	773		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	156,727		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	773		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	15,385		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	1,295	1,382	1,192	1,441	1,384	1,006
Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	39,561		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	286		509
Owner Occupied Construction [Member] | Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	35,511		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	286		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	3,673	$ 3,551	3,534	$ 3,743	$ 3,559	$ 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	321,503		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	13,039		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	312,828		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	12,321		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	0		0
Consumer Portfolio Segment [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Consumer Portfolio Segment [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	8,675		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	718		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		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Other Real Estate Owned [Line Items]
Balance, beginning of period	$ 4,058	$ 10,613	$ 5,998	$ 13,738
Transfers in	74	891	74	1,202
Valuation adjustments	(138)	(14)	(364)	(290)
Proceeds from Sale of OREO Property	182	2,569	1,901	5,845
Gain (loss) on sale of OREO, net	(130)	73	(125)	189
Total OREO, end of period	3,682	$ 8,994	3,682	$ 8,994
Mortgage Loans in Process of Foreclosure, Amount	686		686
One-to-Four Family Residential [Member]
Other Real Estate Owned [Line Items]
Total OREO, end of period	$ 74		$ 74

XML

Covered Assets and FDIC Loss-sharing Asset (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Mar. 31, 2017
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Payment from (to) FDIC to terminate loss-sharing agreements				$ 4,666	$ 0
FDIC indemnification asset settlement	$ 0	$ 3,123	$ 0		0
FDIC clawback liability removal upon termination of loss-sharing agreements		$ 5,400
FDIC loss-sharing agreement early termination, pretax charge				$ 2,409	$ 0
Non-Single Family Covered Assets						$ 74,000
Single Family Covered Assets						$ 26,400

XML

Covered Assets and FDIC Loss-sharing Asset (FDIC Loss-sharing Asset) (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Mar. 31, 2017
Covered Assets And FDIC Loss Sharing Asset [Line Items]
Balance at beginning of period	$ 0		$ 4,266	$ 3,535	$ 6,568
Cash paid to (received from) the FDIC, net	0		20	184	(23)
FDIC reimbursable losses, net	0		(590)	(149)	(756)
FDIC indemnification asset settlement	0	$ (3,123)	0		0
Payment from (to) FDIC to terminate loss-sharing agreements				(4,666)	0
Amortization, net	0		(315)	(414)	(2,530)
Loan impairment	0		266	40	393
Sale of other real estate	0		(49)	18	71
Valuation adjustments of other real estate owned	0		0	0	(22)
Other	0		6	91	109
Balance at end of period	$ 0	$ 0	$ 3,592	$ 0	$ 3,592
Non-Single Family Covered Assets						$ 74,000
Single Family Covered Assets						$ 26,400

XML

Goodwill and Intangible Assets (Schedule of Goodwill and Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Goodwill and Intangible Assets [Roll Forward]
Total goodwill, beginning of period			$ 382,762
Total goodwill, end of period	$ 382,762	$ 382,762	382,762	$ 382,762
CDI current period amortization	(1,188)	(1,460)	(3,786)	(4,526)
Indefinite-Lived Intangible Assets (Excluding Goodwill)	919	919	919	919
Other intangible assets, net	13,845	19,051	13,845	19,051		$ 17,631
Total goodwill and intangible assets, end of period	396,607	401,813	$ 396,607	401,813
Core Deposits [Member]
Goodwill and Intangible Assets [Line Items]
Estimated life of CDI, in years			10 years
Goodwill and Intangible Assets [Roll Forward]
Gross core deposit intangible balance, beginning of period					$ 58,598	58,598	$ 58,598	$ 58,598
Accumulated amortization at beginning of period					$ (44,484)	$ (41,886)	$ (39,006)	$ (35,940)
Core deposit intangible, net, beginning of period	14,114	19,592	$ 16,712	22,658
CDI current period amortization	(1,188)	(1,460)	(3,786)	(4,526)
Total core deposit intangible, end of period	$ 12,926	$ 18,132	$ 12,926	$ 18,132

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Goodwill and Intangible Assets (Estimated Future Amortization Expense of Core Deposit Intangibles) (Details) $ in Thousands	Sep. 30, 2017 USD ($)
Future Amortization Expense For Core Deposit Intangibles
2016	$ 1,127
2017	3,855
2018	2,951
2019	2,048
2020	$ 1,440

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Derivatives and Balance Sheet Offsetting (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Derivative [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax	$ 6	$ 9	$ 12	$ 2
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement	40,933		40,933
Secured Borrowings, Gross, Difference, Amount	0		0
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Derivative [Line Items]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement	40,933		40,933
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	15,933		15,933
Maturity Less than 30 Days [Member] | U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Derivative [Line Items]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement	0		0
Maturity 30 to 90 Days [Member] | U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Derivative [Line Items]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement	0		0
Maturity Greater than 90 Days [Member] | U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Derivative [Line Items]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement	25,000		25,000
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member]
Derivative [Line Items]
Derivative, Notional Amount	380,000		380,000		$ 309,300
Not Designated as Hedging Instrument [Member] | Other Assets [Member] | Interest Rate Contracts [Member]
Derivative [Line Items]
Fair value of asset derivative instruments	8,992		8,992		9,012
Not Designated as Hedging Instrument [Member] | Other Liabilities [Member] | Interest Rate Contracts [Member]
Derivative [Line Items]
Fair value of liability derivative instruments	$ 9,004		$ 9,004		$ 9,036

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Derivatives and Balance Sheet Offsetting Balance Sheet Offsetting (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Balance Sheet Offsetting [Line Items]
Repurchase agreements, amounts offset in balance sheet	$ 0	$ 0
Repurchase agreements, net amount presented in statement of financial position	40,933	80,822
Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Securities	(40,933)	(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	8,992	9,012
Derivative, Collateral, Obligation to Return Securities	0	0
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	8,992	9,012
Derivative Liability, Gross Amounts Offset in Balance Sheets	0	0
Derivative Liability	9,004	9,036
Derivative, Collateral, Right to Reclaim Securities	(9,004)	(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	40,933	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	8,992	9,012
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member] | Other Liabilities [Member]
Balance Sheet Offsetting [Line Items]
Fair value of liability derivative instruments	$ 9,004	$ 9,036

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Commitments and Contingent Liabilities (Details) - USD ($) $ in Thousands			9 Months Ended
	Aug. 11, 2017	Aug. 24, 2016	Sep. 30, 2017	Dec. 31, 2016
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			50,100	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			2,900	$ 3,400
IDAHO
Other Commitments [Line Items]
Sale Leaseback Transaction, Date	August 11, 2017
Sale Leaseback Transaction, Monthly Rental Payments			26
Sale Leaseback Transaction, Deferred Gain, Gross	$ 509
Sale Leaseback Transaction, Deferred Gain, Net			501
WASHINGTON
Other Commitments [Line Items]
Sale Leaseback Transaction, Date		August 24, 2016
Sale Leaseback Transaction, Monthly Rental Payments			12
Sale Leaseback Transaction, Deferred Gain, Gross		$ 742
Sale Leaseback Transaction, Deferred Gain, Net			$ 661

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Shareholders' Equity (Details) - $ / shares	Oct. 19, 2017	Jul. 27, 2017	Apr. 27, 2017	Jan. 26, 2017
Subsequent Event [Line Items]
Declared quarterly cash dividend		$ 0.22	$ 0.22	$ 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		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance		$ (6,528)	$ 20,811	$ (18,999)	$ (6,295)
Other comprehensive income before reclassifications	[1]	549	(4,049)	12,888	23,229
Amounts reclassified from accumulated other comprehensive income	[1]	46	(257)	178	(429)
Net current-period other comprehensive income	[1]	595	(4,306)	13,066	22,800
Ending balance		(5,933)	16,505	(5,933)	16,505
Unrealized Gains and Losses on Available-for-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance		(4,969)	27,280	(12,704)	386
Other comprehensive income before reclassifications	[1]	549	(4,049)	8,284	23,229
Amounts reclassified from accumulated other comprehensive income	[1]	0	(364)	0	(748)
Net current-period other comprehensive income	[1]	549	(4,413)	8,284	22,481
Ending balance		(4,420)	22,867	(4,420)	22,867
Unrealized Gains and Losses on Pension Plan Liability [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance		(1,559)	(6,469)	(6,295)	(6,681)
Other comprehensive income before reclassifications	[1]	0	0	4,604	0
Amounts reclassified from accumulated other comprehensive income	[1]	46	107	178	319
Net current-period other comprehensive income	[1]	46	107	4,782	319
Ending balance		$ (1,513)	$ (6,362)	$ (1,513)	$ (6,362)

[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		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment securities gains, net			$ 0	$ 1,174
Compensation and employee benefits	$ 39,983	$ 38,476	119,201	112,086
Total before tax	59,107	39,608	137,132	106,746
Income tax provision	(18,338)	(12,124)	(40,032)	(32,598)
Net income	40,769	27,484	97,100	74,148
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	572	0	1,174
Total before tax	0	572	0	1,174
Income tax provision	0	(208)	0	(426)
Net income	0	364	0	748
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	(72)	(167)	(279)	(501)
Total before tax	(72)	(167)	(279)	(501)
Income tax provision	26	60	101	182
Net income	$ (46)	$ (107)	$ (178)	$ (319)

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Fair Value Accounting and Measurement (Financial Assets And Liabilities Accounted for Fair Value On Recurring Basis) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 2,207,873	$ 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	$ 2,207,873	2,278,577
Other assets (Interest rate contracts)	8,992	9,012
Other liabilities (Interest rate contracts)	9,004	9,036
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	250	800
Other assets (Interest rate contracts)	0	0
Other liabilities (Interest rate contracts)	0	0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	2,207,623	2,277,777
Other assets (Interest rate contracts)	8,992	9,012
Other liabilities (Interest rate contracts)	9,004	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	1,377,417	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	1,377,417	1,465,732
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
State and Municipal Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	483,488	475,060
State and Municipal Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
State and Municipal Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	483,488	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	341,604	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	341,604	331,902
U.S. Government Agency [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
US Government Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	250	800
US Government Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	250	800
US Government Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
US Government Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Other Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	5,114	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	5,114	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

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Fair Value Accounting and Measurement (Financial Assets Accounted For Fair Value On Nonrecurring Basis) (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 843	$ 2,304	$ 843	$ 2,304
Fair Value, Option, Changes in Fair Value, Gain (Loss)	308	661	308	3,299
OREO	625	335	625	335
Assets, Fair Value Disclosure	1,468	2,639	1,468	2,639
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0	0	0
OREO	0	0	0	0
Assets, Fair Value Disclosure	0	0	0	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0	0	0
OREO	0	0	0	0
Assets, Fair Value Disclosure	0	0	0	0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	843	2,304	843	2,304
OREO	625	335	625	335
Assets, Fair Value Disclosure	1,468	2,639	1,468	2,639
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)	170	647	170	3,285
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)	$ 138	$ 14	$ 138	$ 14

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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
	Sep. 30, 2017	Sep. 30, 2016
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans	$ 843	$ 2,304
OREO	625	335
Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans	843	2,304
OREO	625	335
Collateral Pledged [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans	715	943
Uncollateralized [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans	$ 128	$ 1,361
Uncollateralized [Member] | Market Approach Valuation Technique [Member] | Impaired Loans [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	7.75%	2.85%
Uncollateralized [Member] | Market Approach Valuation Technique [Member] | Impaired Loans [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	7.75%	6.50%
Uncollateralized [Member] | Market Approach Valuation Technique [Member] | Impaired Loans [Member] | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	7.75%	3.85%

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Fair Value Accounting and Measurement (Carrying Amounts and Estimated Fair Values of Selected Financial Instruments) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Assets
Interest-earning deposits with banks	$ 136,578	$ 31,200
Securities available for sale	2,207,873	2,278,577
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Assets
Cash and due from banks	186,116	193,038
Interest-earning deposits with banks	136,578	31,200
Securities available for sale	2,207,873	2,278,577
FHLB stock	10,240	10,240
Loans held for sale	7,802	5,846
Loans	6,440,390	6,143,380
FDIC loss-sharing asset		3,535
Interest rate contracts	8,992	9,012
Liabilities
Deposits	8,341,717	8,059,415
FHLB Advances	6,465	6,493
Repurchase agreements	40,933	80,822
Interest rate contracts	9,004	9,036
Estimate of Fair Value, Fair Value Disclosure [Member]
Assets
Cash and due from banks	186,116	193,038
Interest-earning deposits with banks	136,578	31,200
Securities available for sale	2,207,873	2,278,577
FHLB stock	10,240	10,240
Loans held for sale	7,802	5,846
Loans	6,309,449	6,040,439
FDIC loss-sharing asset		867
Interest rate contracts	8,992	9,012
Liabilities
Deposits	8,337,145	8,055,168
FHLB Advances	7,367	7,070
Repurchase agreements	40,987	81,131
Interest rate contracts	9,004	9,036
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Assets
Cash and due from banks	186,116	193,038
Interest-earning deposits with banks	136,578	31,200
Securities available for sale	250	800
FHLB stock	0	0
Loans held for sale	0	0
Loans	0	0
FDIC loss-sharing asset		0
Interest rate contracts	0	0
Liabilities
Deposits	7,960,870	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	2,207,623	2,277,777
FHLB stock	10,240	10,240
Loans held for sale	7,802	5,846
Loans	0	0
FDIC loss-sharing asset		0
Interest rate contracts	8,992	9,012
Liabilities
Deposits	376,275	402,046
FHLB Advances	7,367	7,070
Repurchase agreements	40,987	81,131
Interest rate contracts	9,004	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	6,309,449	6,040,439
FDIC loss-sharing asset		867
Interest rate contracts	0	0
Liabilities
Deposits	0	0
FHLB Advances	0	0
Repurchase agreements	0	0
Interest rate contracts	$ 0	$ 0

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Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net Income	$ 40,769	$ 27,484	$ 97,100	$ 74,148
Earnings allocated to participating securities - preferred shares	0	48	4	131
Earnings allocated to participating securities - nonvested restricted shares	558	378	1,325	953
Earnings allocated to common shareholders, Basic	$ 40,211	$ 27,058	$ 95,771	$ 73,064
Weighted average common shares outstanding	57,566	57,215	57,459	57,173
Basic earnings per common share	$ 0.70	$ 0.47	$ 1.67	$ 1.28
Earnings allocated to common shareholders, Diluted	$ 40,211	$ 27,058	$ 95,771	$ 73,064
Dilutive effect of equity awards and warrants	5	10	6	10
Weighted average diluted common shares outstanding	57,571	57,225	57,465	57,183
Diluted earnings per common share	$ 0.70	$ 0.47	$ 1.67	$ 1.28
Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive.	12	15	13	20

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Subsequent event (Details) - Pacific Continental [Member] - Subsequent Event [Member] $ in Millions	Nov. 01, 2017 USD ($)
Subsequent Event [Line Items]
Business Acquisition, Effective Date of Acquisition	Nov. 01, 2017
Business Combination, total consideration estimate	$ 644.8
Business Acquisition, Percentage of Voting Interests Acquired	100.00%