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, 2019.

☐ 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 and zip code)

(253) 305-1900

(Registrant’s telephone number, including area code)

Securities Registered Pursuant to Section 12(b) of the Act:
Common Stock, No Par Value	COLB	NASDAQ Global Select Market
(Title of each class)	(Trading symbol)	(Name of each exchange on which registered)

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 x No ¨ 

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted 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 x No ¨

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

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

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

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

Yes ☐  No x

The number of shares of common stock outstanding at October 31, 2019 was 72,136,242.

TABLE OF CONTENTS

		Page
	PART I — FINANCIAL INFORMATION
Item 1.	Financial Statements (unaudited)
	Consolidated Balance Sheets - September 30, 2019 and December 31, 2018	2
	Consolidated Statements of Income - three and nine months ended September 30, 2019 and 2018	3
	Consolidated Statements of Comprehensive Income - three and nine months ended September 30, 2019 and 2018	4
	Consolidated Statements of Changes in Shareholders’ Equity - three and nine months ended September 30, 2019 and 2018	5
	Consolidated Statements of Cash Flows - nine months ended September 30, 2019 and 2018	7
	Notes to Unaudited Consolidated Financial Statements	9
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	38
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	58
Item 4.	Controls and Procedures	58
	PART II — OTHER INFORMATION
Item 1.	Legal Proceedings	59
Item 1A.	Risk Factors	59
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	59
Item 3.	Defaults Upon Senior Securities	59
Item 4.	Mine Safety Disclosures	59
Item 5.	Other Information	59
Item 6.	Exhibits	60
	Signatures	61

i

PART I - FINANCIAL INFORMATION

Glossary of Acronyms, Abbreviations, and Terms

The acronyms, abbreviations, and terms listed below are used in various sections of the Form 10-Q, including “Item 1. Financial Statements” and “Item 2. Management Discussion and Analysis of Financial Condition and Results of Operations.”

ALLL	Allowance for Loan and Lease Losses	FASB	Financial Accounting Standards Board
ASC	Accounting Standards Codification	FDIC	Federal Deposit Insurance Corporation
ASU	Accounting Standards Update	FHLB	Federal Home Loan Bank of Des Moines
ATM	Automated Teller Machine	FRB	Federal Reserve Bank
BOLI	Bank Owned Life Insurance	LIBOR	London Interbank Offering Rate
Basel III	A comprehensive capital framework and rules for U.S. banking organizations approved by the FRB and the FDIC in 2013	NIM	Net Interest Margin
B&O	Business and Occupation	OPPO	Other Personal Property Owned
CDI	Core Deposit Intangible	OREO	Other Real Estate Owned
CECL	Current Expected Credit Loss	Pacific Continental	Pacific Continental Corporation
CDARS®	Certificate of Deposit Account Registry Service	PCI	Purchased Credit Impaired
CET1	Common Equity Tier 1	REASD	Real Estate Appraisal Services Department
CEO	Chief Executive Officer	SBA	Small Business Administration
CFO	Chief Financial Officer	SEC	Securities and Exchange Commission
Dodd-Frank Act	Dodd-Frank Wall Street Reform and Consumer Protection Act	TDRs	Troubled Debt Restructurings
EPS	Earnings Per Share	GAAP	Generally Accepted Accounting Principles

1

Item 1. FINANCIAL STATEMENTS

CONSOLIDATED BALANCE SHEETS

Columbia Banking System, Inc.

(Unaudited)

			September 30, 2019			December 31, 2018
ASSETS			(in thousands)
Cash and due from banks			$	278,461		$	260,180
Interest-earning deposits with banks			20,144			17,407
Total cash and cash equivalents			298,605			277,587
Debt securities available for sale at fair value			3,367,572			3,167,448
FHLB stock at cost			29,680			25,960
Loans held for sale			15,036			3,849
Loans, net of unearned income			8,756,355			8,391,511
Less: ALLL			82,660			83,369
Loans, net			8,673,695			8,308,142
Interest receivable			48,503			45,323
Premises and equipment, net			165,431			168,788
OREO			625			6,019
Goodwill			765,842			765,842
Other intangible assets, net			37,908			45,937
Other assets			354,863			280,250
Total assets			$	13,757,760		$	13,095,145
LIABILITIES AND SHAREHOLDERS’ EQUITY
Deposits:
Noninterest-bearing			$	5,320,435		$	5,227,216
Interest-bearing			5,535,281			5,230,910
Total deposits			10,855,716			10,458,126
FHLB advances			492,482			399,523
Securities sold under agreements to repurchase			24,489			61,094
Subordinated debentures			35,323			35,462
Other liabilities			188,173			107,291
Total liabilities			11,596,183			11,061,496
Commitments and contingent liabilities (Note 11)
Shareholders’ equity:
	September 30, 2019	December 31, 2018
	(in thousands)
Preferred stock (no par value)
Authorized shares	2,000	2,000
Common stock (no par value)
Authorized shares	115,000	115,000
Issued	73,588	73,249	1,648,335			1,642,246
Outstanding	72,288	73,249
Retained earnings			493,738			426,708
Accumulated other comprehensive income (loss)			64,884			(35,305		)
Treasury stock at cost	1,300	—	(45,380		)	—
Total shareholders’ equity			2,161,577			2,033,649
Total liabilities and shareholders’ equity			$	13,757,760		$	13,095,145

See accompanying Notes to unaudited Consolidated Financial Statements.

2

CONSOLIDATED STATEMENTS OF INCOME

Columbia Banking System, Inc.

(Unaudited)

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
	(in thousands except per share amounts)
Interest Income
Loans	$	112,656		$	109,748		$	337,657		$	318,187
Taxable securities	16,457			14,654			49,790			39,285
Tax-exempt securities	2,556			3,069			8,237			9,196
Deposits in banks	864			104			1,159			600
Total interest income	132,533			127,575			396,843			367,268
Interest Expense
Deposits	6,863			3,193			16,337			8,274
FHLB advances	2,569			966			9,962			2,351
Subordinated debentures	468			468			1,404			1,404
Other borrowings	183			152			552			288
Total interest expense	10,083			4,779			28,255			12,317
Net Interest Income	122,450			122,796			368,588			354,951
Provision for loan and lease losses	299			3,153			1,879			12,980
Net interest income after provision for loan and lease losses	122,151			119,643			366,709			341,971
Noninterest Income
Deposit account and treasury management fees	9,015			9,266			27,030			26,689
Card revenue	4,006			3,714			11,431			16,143
Financial services and trust revenue	3,226			2,975			9,608			8,924
Loan revenue	3,855			3,282			9,840			9,522
Bank owned life insurance	1,528			1,402			4,644			4,540
Investment securities gains (losses), net	—			(62		)	2,132			(73		)
Other	6,400			442			10,689			2,109
Total noninterest income	28,030			21,019			75,374			67,854
Noninterest Expense
Compensation and employee benefits	54,459			49,419			158,559			148,938
Occupancy	8,645			8,321			26,166			27,718
Data processing	5,102			4,466			14,372			14,957
Legal and professional fees	5,683			4,695			16,810			12,103
Amortization of intangibles	2,632			3,070			8,029			9,346
B&O taxes (1)	1,325			1,478			4,612			4,254
Advertising and promotion	1,752			1,472			3,596			4,523
Regulatory premiums	(38		)	904			1,902			2,778
Net cost (benefit) of operation of OREO	(90		)	485			(682		)	1,244
Other (1)	7,606			8,531			25,140			27,610
Total noninterest expense	87,076			82,841			258,504			253,471
Income before income taxes	63,105			57,821			183,579			156,354
Income tax provision	12,378			11,406			35,257			28,220
Net Income	$	50,727		$	46,415		$	148,322		$	128,134
Earnings per common share
Basic	$	0.70		$	0.63		$	2.04		$	1.75
Diluted	$	0.70		$	0.63		$	2.04		$	1.75
Weighted average number of common shares outstanding	71,803			72,427			72,256			72,370
Weighted average number of diluted common shares outstanding	71,803			72,432			72,257			72,374

__________

(1) Beginning the first quarter of 2019, B&O taxes are reported separately from other taxes, licenses and fees, which are now reported under “other noninterest expense.” Prior periods have been reclassified to conform to current period presentation.

See accompanying Notes to unaudited Consolidated Financial Statements.

3

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

Columbia Banking System, Inc.

(Unaudited) 

	Three Months Ended
	September 30,
	2019			2018
	(in thousands)
Net income	$	50,727		$	46,415
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) from securities:
Net unrealized holding gain (loss) from available for sale debt securities arising during the period, net of tax of ($4,421) and $4,286	14,593			(14,149		)
Net unrealized gain (loss) from securities, net of reclassification adjustment	14,593			(14,149		)
Pension plan liability adjustment:
Amortization of unrecognized net actuarial loss included in net periodic pension cost, net of tax of ($19) and ($19)	62			61
Pension plan liability adjustment, net	62			61
Unrealized gain from cash flow hedging instruments:
Net unrealized gain in cash flow hedging instruments arising during the period, net of tax of ($951) and $0	3,137			—
Reclassification adjustment for net gain in cash flow hedging instruments included in income, net of tax of $18 and $0	(58		)	—
Net unrealized gain from cash flow hedging instruments, net of reclassification adjustment	3,079			—
Other comprehensive income (loss)	17,734			(14,088		)
Total comprehensive income	$	68,461		$	32,327

	Nine Months Ended
	September 30,
	2019			2018
	(in thousands)
Net income	$	148,322		$	128,134
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) from securities:
Net unrealized holding gain (loss) from available for sale debt securities arising during the period, net of tax of ($26,209) and $14,554	86,519			(48,043		)
Reclassification adjustment of net gain from sale of available for sale debt securities included in income, net of tax of $496 and $25	(1,636		)	(81		)
Net unrealized gain (loss) from securities, net of reclassification adjustment	84,883			(48,124		)
Pension plan liability adjustment:
Amortization of unrecognized net actuarial loss included in net periodic pension cost, net of tax of ($56) and ($56)	184			183
Pension plan liability adjustment, net	184			183
Unrealized gain from cash flow hedging instruments:
Net unrealized gain in cash flow hedging instruments arising during the period, net of tax of ($4,599) and $0	15,180			—
Reclassification adjustment for net gain in cash flow hedging instruments included in income, net of tax of $18 and $0	(58		)	—
Net unrealized gain from cash flow hedging instruments, net of reclassification adjustment	15,122			—
Other comprehensive income (loss)	100,189			(47,941		)
Total comprehensive income	$	248,511		$	80,193

See accompanying Notes to unaudited Consolidated Financial Statements.

4

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY

Columbia Banking System, Inc.

(Unaudited)

	Common Stock					Retained Earnings			Accumulated Other Comprehensive Income (Loss)			Treasury Stock			Total Shareholders’ Equity
	Shares Outstanding		Amount
For the Three Months Ended September 30, 2019	(in thousands except per share amounts)
Balance at July 1, 2019	72,924		$	1,644,922		$	463,429		$	47,150		$	(21,863	)	$	2,133,638
Net income	—		—			50,727			—			—			50,727
Other comprehensive income	—		—			—			17,734			—			17,734
Issuance of common stock - stock option and other plans	31		1,132			—			—			—			1,132
Activity in deferred compensation plan	—		1			—			—			—			1
Issuance of common stock - restricted stock awards, net of canceled awards	9		2,299			—			—			—			2,299
Purchase and retirement of common stock	—		(19		)	—			—			—			(19		)
Cash dividends declared on common stock ($0.28 per share)	—		—			(20,418		)	—			—			(20,418		)
Purchase of treasury stock	(676	)	—			—			—			(23,517		)	(23,517		)
Balance at September 30, 2019	72,288		$	1,648,335		$	493,738		$	64,884		$	(45,380	)	$	2,161,577
For the Nine Months Ended September 30, 2019
Balance at January 1, 2019	73,249		$	1,642,246		$	426,708		$	(35,305	)	$	—		$	2,033,649
Adjustment to opening retained earnings pursuant to adoption of ASU 2016-02	—		—			782			—			—			782
Net income	—		—			148,322			—			—			148,322
Other comprehensive income	—		—			—			100,189			—			100,189
Issuance of common stock - stock option and other plans	58		2,025			—			—			—			2,025
Activity in deferred compensation plan	—		2			—			—			—			2
Issuance of common stock - restricted stock awards, net of canceled awards	354		6,827			—			—			—			6,827
Purchase and retirement of common stock	(73	)	(2,765		)	—			—			—			(2,765		)
Cash dividends declared on common stock ($1.12 per share)	—		—			(82,074		)	—			—			(82,074		)
Purchase of treasury stock	(1,300	)	—			—			—			(45,380		)	(45,380		)
Balance at September 30, 2019	72,288		$	1,648,335		$	493,738		$	64,884		$	(45,380	)	$	2,161,577

See accompanying Notes to unaudited Consolidated Financial Statements.

5

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY, Continued

Columbia Banking System, Inc.

(Unaudited)

	Common Stock					Retained Earnings			Accumulated Other Comprehensive Income (Loss)			Treasury Stock		Total Shareholders’ Equity
	Shares Outstanding		Amount
For the Three Months Ended September 30, 2018	(in thousands except per share amounts)
Balance at July 1, 2018	73,245		$	1,636,903		$	383,899		$	(55,921	)	$	—	$	1,964,881
Net income	—		—			46,415			—			—		46,415
Other comprehensive loss	—		—			—			(14,088		)	—		(14,088		)
Issuance of common stock - stock option and other plans	26		1,121			—			—			—		1,121
Activity in deferred compensation plan	—		1			—			—			—		1
Issuance of common stock - restricted stock awards, net of canceled awards	(11	)	2,148			—			—			—		2,148
Purchase and retirement of common stock	—		(33		)	—			—			—		(33		)
Cash dividends declared on common stock ($0.26 per share)	—		—			(19,050		)	—			—		(19,050		)
Balance at September 30, 2018	73,260		$	1,640,140		$	411,264		$	(70,009	)	$	—	$	1,981,395
For the Nine Months Ended September 30, 2018
Balance at January 1, 2018	73,020		$	1,634,705		$	337,442		$	(22,225	)	$	—	$	1,949,922
Adjustment to opening retained earnings pursuant to adoption of ASU 2016-01	—		—			(157		)	157			—		—
Net income	—		—			128,134			—			—		128,134
Other comprehensive loss	—		—			—			(47,941		)	—		(47,941		)
Issuance of common stock - stock option and other plans	45		1,857			—			—			—		1,857
Activity in deferred compensation plan	—		7			—			—			—		7
Issuance of common stock - restricted stock awards, net of canceled awards	257		6,231			—			—			—		6,231
Purchase and retirement of common stock	(62	)	(2,660		)	—			—			—		(2,660		)
Cash dividends declared on common stock ($0.74 per share)	—		—			(54,155		)	—			—		(54,155		)
Balance at September 30, 2018	73,260		$	1,640,140		$	411,264		$	(70,009	)	$	—	$	1,981,395

See accompanying Notes to unaudited Consolidated Financial Statements.

6

CONSOLIDATED STATEMENTS OF CASH FLOWS Columbia Banking System, Inc. (Unaudited)
	Nine Months Ended September 30,
	2019			2018
	(in thousands)
Cash Flows From Operating Activities
Net income	$	148,322		$	128,134
Adjustments to reconcile net income to net cash provided by operating activities
Provision for loan and lease losses	1,879			12,980
Stock-based compensation expense	6,827			6,231
Depreciation, amortization and accretion	26,150			25,807
Investment securities (gain) loss, net	(2,132		)	73
Net realized (gain) loss on sale of premises and equipment and loans held for investment	(6,787		)	142
Net realized (gain) loss on sale and valuation adjustments of OREO	(602		)	1,299
Gain on bank owned life insurance death benefit	(2,975		)	—
Originations of loans held for sale	(134,634		)	(103,614		)
Proceeds from sales of loans held for sale	123,447			104,105
Net change in:
Interest receivable	(3,180		)	(7,595		)
Interest payable	632			618
Other assets	(31,840		)	(2,599		)
Other liabilities	29,706			5,662
Net cash provided by operating activities	154,813			171,243
Cash Flows From Investing Activities
Loans originated, net of principal collected (1)	(305,581		)	(121,413		)
Purchases of:
Debt securities available for sale	(649,133		)	(606,052		)
Loans held for investment (1)	(57,075		)	(46,969		)
Premises and equipment	(5,833		)	(8,253		)
FHLB stock	(190,800		)	(136,120		)
Proceeds from:
Sales of debt securities available for sale	259,554			32,330
Principal repayments and maturities of debt securities available for sale	287,479			311,956
Sales of premises and equipment and loans held for investment	7,735			14,956
Redemption of FHLB stock	187,080			129,920
Sales of OREO and OPPO	6,433			5,868
Bank owned life insurance death benefit	—			5,074
Net cash used in investing activities	(460,141		)	(418,703		)
Cash Flows From Financing Activities
Net increase in deposits	397,893			72,151
Net increase (decrease) in sweep repurchase agreements (2)	(36,605		)	8,138
Proceeds from:
FHLB advances	4,770,000			3,403,000
FRB borrowings	36,000			5,010
Other borrowings	100			—
Exercise of stock options	2,025			1,857
Payments for:
Repayment of FHLB advances	(4,677,000		)	(3,248,000		)
Repayment of FRB borrowings	(36,000		)	(5,010		)
Repayment of other borrowings	(100		)	—
Repayment of junior subordinated debentures	—			(8,248		)
Repayment of term repurchase agreement (2)	—			(25,000		)
Common stock dividends	(81,822		)	(54,149		)
Purchase of treasury stock	(45,380		)	—
Purchase and retirement of common stock	(2,765		)	(2,660		)
Net cash provided by financing activities	326,346			147,089
Increase (decrease) in cash and cash equivalents	21,018			(100,371		)
Cash and cash equivalents at beginning of period	277,587			342,533
Cash and cash equivalents at end of period	$	298,605		$	242,162
___________________
(1) Revised from amounts previously reported to correct an immaterial misclassification of $47.0 million of purchases of loans held for investment within loans originated, net of principal collected, for the nine months ended September 30, 2018. There were no changes to net cash flows from operating, investing or financing activities as a result of this change. (2) Revised from amounts previously reported to correct an immaterial misclassification of a $25.0 million repayment of the term repurchase agreement within net increase (decrease) in sweep repurchase agreements for the nine months ended September 30, 2018. There were no changes to net cash flows from operating, investing or financing activities as a result of this change.

7

CONSOLIDATED STATEMENTS OF CASH FLOWS, Continued Columbia Banking System, Inc. (Unaudited)
	Nine Months Ended September 30,
	2019		2018
	(in thousands)
Supplemental Information:
Interest paid	$	27,623	$	11,699
Income taxes paid, net of refunds	$	33,134	$	12,768
Non-cash investing and financing activities
Loans transferred to OREO	$	386	$	1,200
Premises and equipment expenditures incurred but not yet paid	$	152	$	464
Change in dividends payable on unvested shares included in other liabilities	$	252	$	6

See accompanying Notes to unaudited Consolidated Financial Statements.

8

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

Columbia Banking System, Inc.

1. Basis of Presentation, Significant Accounting Policies and Reclassifications

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, 2019 are not necessarily indicative of results to be anticipated for the year ending December 31, 2019. The accompanying interim unaudited Consolidated Financial Statements should be read in conjunction with the financial statements and related notes contained in the Company’s 2018 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 2018 Annual Report on Form 10-K. There have not been any changes in our significant accounting policies compared to those contained in our 2018 Form 10-K disclosure for the year ended December 31, 2018.

Reclassifications

Certain amounts reported in prior periods have been reclassified in the Consolidated Financial Statements to conform to the current presentation. The reclassifications have no effect on net income or stockholders’ equity as previously reported.

2. Accounting Pronouncements Recently Adopted or Issued

Accounting Standards Adopted in 2019

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. The new lease model differs from the old lease accounting model, as the old model 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. The FASB subsequently issued ASU 2018-11, which allows for an additional (optional) transition method. The Company adopted the new standard effective January 1, 2019 utilizing the transition method allowed under ASU 2018-11 and did not restate comparative periods. The Company elected the package of practical expedients permitted under the transition guidance, which allowed us to carryforward our historical lease classifications and our assessment on whether a contract is or contains a lease. We also elected to keep leases with an initial term of 12 months or less off the balance sheet. The adoption of the new standard resulted in an increase in other assets and an increase in other liabilities of $49.2 million and $48.2 million, respectively. The Company recognized a cumulative effect adjustment of $782 thousand to increase the beginning balance of retained earnings related to previous deferred gains on sale-leaseback transactions.

In August 2018, the FASB issued ASU 2018-15, Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That is a Service Contract. The amendments in this ASU align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the ASC 350 requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The amendments also require the entity to expense the capitalized implementation costs of a hosting arrangement that is a service contract over the term of the hosting arrangement, including reasonably certain renewal periods. The amendments in ASU 2018-15 are effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption is permitted, including adoption in any interim period. The amendments can be adopted on a prospective or retrospective basis. The Company adopted the new standard effective July 1, 2019 on a prospective basis. The adoption of the new standard resulted in an increase in other assets of $920 thousand.

9

Recently Issued Accounting Standards, Not Yet Adopted

In April 2019, the FASB issued ASU 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments. The amendments in this ASU clarify certain aspects of accounting for credit losses, hedging activities, and financial instruments (addressed by ASUs 2016-01, 2016-13, and 2017-12). Many of the amendments reflect decisions reached at FASB meetings or meetings of the Board’s credit losses transition resource group. Topics covered in this ASU include: accrued interest, transfers between classifications or categories for loans and debt securities, recoveries, reinsurance recoverables, projections of interest rate environments for variable-rate financial instruments, costs to sell when foreclosure is probable, consideration of expected prepayments when determining the effective interest rate, vintage disclosures, extension and renewal options, etc. The amendments in ASU 2019-04 are effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption is permitted, including adoption in any interim period. The Company is assessing the impact that this guidance will have on its Consolidated Financial Statements.

In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments. The amendments included in this ASU require an entity to reflect its current estimate of all expected credit losses for assets held at an amortized cost basis. For available for sale debt securities, credit losses 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.

Unlike the incurred loss models in existing GAAP, the 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 change significantly from the impairment allowance measured under the Company’s existing incurred loss model. The Company has engaged a third-party vendor to assist in the CECL calculation and has developed an internal governance framework to oversee the CECL implementation. Significant CECL implementation matters that have been completed include identifying, sourcing and storing data, addressing data gaps, defining a reasonable and supportable forecast period and selecting historical loss information. Other significant CECL implementation matters being addressed by the Company include selecting loss estimation methodologies, assessing the impact to internal controls over financial reporting, and capital planning.

Upon adoption of the standard on January 1, 2020, the Company expects that, based on current expectations of future economic conditions, its impact on the allowance for credit losses will range from a decrease of 10% to an increase of 5%, with no material impact on capital levels anticipated. The ultimate impact will depend on the characteristics of the Company’s portfolios as well as the macroeconomic conditions and forecasts upon adoption, the ultimate validation of models and methodologies, and other management judgments.

10

3. Securities

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

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
September 30, 2019	(in thousands)
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations (1)	$	2,432,873	$	61,024	$	(11,062	)	$	2,482,835
Other asset-backed securities (1)	166,482		5,149		(53		)	171,578
State and municipal securities	488,273		9,471		(430		)	497,314
U.S. government agency and government-sponsored enterprise securities	212,265		3,382		(52		)	215,595
U.S. government securities	250		—		—			250
Total	$	3,300,143	$	79,026	$	(11,597	)	$	3,367,572
December 31, 2018
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations (1)	$	2,045,728	$	8,473	$	(40,846	)	$	2,013,355
Other asset-backed securities (1)	176,793		763		(2,621		)	174,935
State and municipal securities	579,755		2,328		(7,760		)	574,323
U.S. government agency and government-sponsored enterprise securities	408,088		1,235		(4,736		)	404,587
U.S. government securities	251		—		(3		)	248
Total	$	3,210,615	$	12,799	$	(55,966	)	$	3,167,448

__________

(1) Beginning July 2019, other asset-backed securities were presented separately in this table. Prior period amounts that were previously reported in U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations have been reclassified to conform to current period presentation.

The following table provides the proceeds and both gross realized gains and losses on sales of debt securities available for sale as well as other securities gains and losses for the periods indicated:

	Three Months Ended September 30,					Nine Months Ended September 30,
	2019		2018			2019			2018
	(in thousands)
Proceeds from sales of debt securities available for sale	$	—	$	—		$	259,554		$	32,330
Gross realized gains from sales of debt securities available for sale	$	—	$	—		$	3,357		$	235
Gross realized losses from sales of debt securities available for sale	—		—			(1,225		)	(129		)
Other securities losses, net (1)	—		(62		)	—			(179		)
Investment securities gains, net	$	—	$	(62	)	$	2,132		$	(73	)

__________

(1) Other securities losses, net includes net unrealized loss activity associated with equity securities for the periods ended September 30, 2018. There were no sales of equity securities during the periods presented.

11

The scheduled contractual maturities of debt securities available for sale at September 30, 2019 are presented as follows:

	September 30, 2019
	Amortized Cost		Fair Value
	(in thousands)
Due within one year	$	112,412	$	112,594
Due after one year through five years	412,269		416,294
Due after five years through ten years	1,592,778		1,650,631
Due after ten years	1,182,684		1,188,053
Total debt securities available for sale	$	3,300,143	$	3,367,572

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

	September 30, 2019
	(in thousands)
To secure public funds	$	443,320
To secure borrowings	111,421
Other securities pledged	155,727
Total securities pledged as collateral	$	710,468

The following table shows the gross unrealized losses and fair value of the Company’s debt securities available for sale 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, 2019 and December 31, 2018:

	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
September 30, 2019	(in thousands)
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations (1)	$	478,690	$	(4,017	)	$	528,228	$	(7,045	)	$	1,006,918	$	(11,062	)
Other asset-backed securities (1)	—		—			6,926		(53		)	6,926		(53		)
State and municipal securities	52,763		(255		)	23,237		(175		)	76,000		(430		)
U.S. government agency and government-sponsored enterprise securities	—		—			57,448		(52		)	57,448		(52		)
U.S. government securities	—		—			250		—			250		—
Total	$	531,453	$	(4,272	)	$	616,089	$	(7,325	)	$	1,147,542	$	(11,597	)
December 31, 2018
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations (1)	$	114,551	$	(750	)	$	1,207,020	$	(40,096	)	$	1,321,571	$	(40,846	)
Other asset-backed securities (1)	40,071		(222		)	94,367		(2,399		)	134,438		(2,621		)
State and municipal securities	106,292		(581		)	280,496		(7,179		)	386,788		(7,760		)
U.S. government agency and government-sponsored enterprise securities	15,392		(45		)	291,435		(4,691		)	306,827		(4,736		)
U.S. government securities	—		—			247		(3		)	247		(3		)
Total	$	276,306	$	(1,598	)	$	1,873,565	$	(54,368	)	$	2,149,871	$	(55,966	)

__________

(1) Beginning July 2019, other asset-backed securities were presented separately in this table. Prior period amounts that were previously reported in U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations have been reclassified to conform to current period presentation.

12

At September 30, 2019, there were 211 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations securities in an unrealized loss position, of which 170 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, 2019.

At September 30, 2019, there were six other asset-backed securities in an unrealized loss position, all of which 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, 2019.

At September 30, 2019, there were 81 state and municipal government securities in an unrealized loss position, of which 27 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, 2019, 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, 2019.

At September 30, 2019, there were seven U.S. government agency and government-sponsored enterprise securities in an unrealized loss position, all of which 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, 2019.

At September 30, 2019, there was one U.S. government security in an unrealized loss position, which was also in a continuous loss position for more than 12 months. 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, 2019.

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 PCI 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 PCI loans.

13

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

	September 30, 2019									December 31, 2018
	Loans, excluding PCI loans			PCI Loans			Total			Loans, excluding PCI loans			PCI Loans			Total
	(in thousands)
Commercial business	$	3,707,314		$	9,004		$	3,716,318		$	3,438,422		$	9,240		$	3,447,662
Real estate:
One-to-four family residential	273,079			7,403			280,482			238,367			8,017			246,384
Commercial and multifamily residential	3,975,647			56,702			4,032,349			3,846,027			62,910			3,908,937
Total real estate	4,248,726			64,105			4,312,831			4,084,394			70,927			4,155,321
Real estate construction:
One-to-four family residential	195,198			144			195,342			217,790			153			217,943
Commercial and multifamily residential	261,786			486			262,272			284,394			534			284,928
Total real estate construction	456,984			630			457,614			502,184			687			502,871
Consumer	297,009			8,038			305,047			318,945			8,906			327,851
Less: Net unearned income	(35,455		)	—			(35,455		)	(42,194		)	—			(42,194		)
Total loans, net of unearned income	8,674,578			81,777			8,756,355			8,301,751			89,760			8,391,511
Less: ALLL	(79,602		)	(3,058		)	(82,660		)	(79,758		)	(3,611		)	(83,369		)
Total loans, net	$	8,594,976		$	78,719		$	8,673,695		$	8,221,993		$	86,149		$	8,308,142
Loans held for sale	$	15,036		$	—		$	15,036		$	3,849		$	—		$	3,849

At September 30, 2019 and December 31, 2018, 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.

At September 30, 2019 and December 31, 2018, $3.18 billion and $3.22 billion of commercial and residential real estate loans were pledged as collateral on FHLB borrowings and additional borrowing capacity. The Company has also pledged $138.9 million and $82.0 million of commercial loans to the FRB for additional borrowing capacity at September 30, 2019 and December 31, 2018, respectively.

The following is an analysis of nonaccrual loans as of September 30, 2019 and December 31, 2018:

	September 30, 2019				December 31, 2018
	Recorded Investment Nonaccrual Loans		Unpaid Principal Balance Nonaccrual Loans		Recorded Investment Nonaccrual Loans		Unpaid Principal Balance Nonaccrual Loans
	(in thousands)
Commercial business:
Secured	$	24,408	$	35,033	$	35,504	$	45,072
Unsecured	—		—		9		9
Real estate:
One-to-four family residential	574		594		1,158		1,178
Commercial and multifamily residential:
Commercial land	2,562		2,570		2,261		2,270
Income property	997		997		2,721		3,062
Owner occupied	6,524		6,633		9,922		10,300
Real estate construction:
One-to-four family residential:
Land and acquisition	—		—		318		318
Consumer	1,956		2,299		2,949		3,149
Total	$	37,021	$	48,126	$	54,842	$	65,358

14

Loans, excluding PCI loans

The following is an aging of the recorded investment of the loan portfolio as of September 30, 2019 and December 31, 2018:

	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, 2019	(in thousands)
Commercial business:
Secured	$	3,525,753	$	5,560	$	262	$	—	$	5,822	$	24,408	$	3,555,983
Unsecured	138,947		424		2		—		426		—		139,373
Real estate:
One-to-four family residential	269,593		2,429		437		—		2,866		574		273,033
Commercial and multifamily residential:
Commercial land	292,594		140		—		—		140		2,562		295,296
Income property	1,955,634		2,038		3,266		—		5,304		997		1,961,935
Owner occupied	1,689,919		1,727		138		—		1,865		6,524		1,698,308
Real estate construction:
One-to-four family residential:
Land and acquisition	1,614		—		—		—		—		—		1,614
Residential construction	192,563		—		—		—		—		—		192,563
Commercial and multifamily residential:
Income property	151,362		6,038		—		—		6,038		—		157,400
Owner occupied	100,610		1,636		—		—		1,636		—		102,246
Consumer	293,861		746		264		—		1,010		1,956		296,827
Total	$	8,612,450	$	20,738	$	4,369	$	—	$	25,107	$	37,021	$	8,674,578
	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, 2018	(in thousands)
Commercial business:
Secured	$	3,267,709	$	5,864	$	3,624	$	—	$	9,488	$	35,504	$	3,312,701
Unsecured	111,868		240		—		—		240		9		112,117
Real estate:
One-to-four family residential	233,941		694		233		—		927		1,158		236,026
Commercial and multifamily residential:
Commercial land	283,416		—		—		—		—		2,261		285,677
Income property	1,910,505		5,009		2,241		—		7,250		2,721		1,920,476
Owner occupied	1,606,085		1,744		—		—		1,744		9,922		1,617,751
Real estate construction:
One-to-four family residential:
Land and acquisition	4,099		—		—		—		—		318		4,417
Residential construction	212,303		93		—		—		93		—		212,396
Commercial and multifamily residential:
Income property	194,912		—		—		—		—		—		194,912
Owner occupied	79,805		7,258		—		—		7,258		—		87,063
Consumer	314,008		1,057		201		—		1,258		2,949		318,215
Total	$	8,218,651	$	21,959	$	6,299	$	—	$	28,258	$	54,842	$	8,301,751

15

The following is an analysis of impaired loans as of September 30, 2019 and December 31, 2018:

	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, 2019	(in thousands)
Commercial business:
Secured	$	3,530,404	$	25,579	$	9,114	$	10,673	$	1,879	$	16,465	$	21,051
Unsecured	139,360		13		13		13		—		—		—
Real estate:
One-to-four family residential	272,686		347		347		635		5		—		—
Commercial and multifamily residential:
Commercial land	292,436		2,860		1,591		1,601		320		1,269		1,304
Income property	1,961,935		—		—		—		—		—		—
Owner occupied	1,688,118		10,190		3,733		5,260		105		6,457		6,599
Real estate construction:
One-to-four family residential:
Land and acquisition	1,614		—		—		—		—		—		—
Residential construction	192,563		—		—		—		—		—		—
Commercial and multifamily residential:
Income property	157,400		—		—		—		—		—		—
Owner occupied	102,246		—		—		—		—		—		—
Consumer	294,599		2,228		379		514		17		1,849		2,006
Total	$	8,633,361	$	41,217	$	15,177	$	18,696	$	2,326	$	26,040	$	30,960
	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, 2018	(in thousands)
Commercial business:
Secured	$	3,286,416	$	26,285	$	6,350	$	8,460	$	2,023	$	19,935	$	24,404
Unsecured	112,097		20		20		20		—		—		—
Real estate:
One-to-four family residential	235,138		888		325		798		8		563		575
Commercial and multifamily residential:
Commercial land	283,451		2,226		—		—		—		2,226		2,272
Income property	1,917,522		2,954		99		165		1		2,855		3,011
Owner occupied	1,605,042		12,709		3,231		4,666		69		9,478		9,750
Real estate construction:
One-to-four family residential:
Land and acquisition	4,417		—		—		—		—		—		—
Residential construction	212,396		—		—		—		—		—		—
Commercial and multifamily residential:
Income property	194,912		—		—		—		—		—		—
Owner occupied	87,063		—		—		—		—		—		—
Consumer	314,193		4,022		3,326		3,584		31		696		704
Total	$	8,252,647	$	49,104	$	13,351	$	17,693	$	2,132	$	35,753	$	40,716

16

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,
	2019				2018				2019				2018
	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	$	21,419	$	108	$	43,805	$	2	$	24,833	$	267	$	43,055	$	43
Unsecured	15		—		444		—		17		1		234		1
Real estate:
One-to-four family residential	596		12		545		12		736		29		713		30
Commercial and multifamily residential:
Commercial land	2,861		8		2,246		26		2,704		23		2,407		26
Income property	664		—		2,443		34		1,401		—		3,367		96
Owner occupied	10,241		176		9,349		124		12,435		210		8,986		333
Real estate construction:
One-to-four family residential:
Residential construction	—		—		—		—		—		—		605		—
Commercial and multifamily residential:
Owner occupied	—		—		4,050		72		—		—		4,050		174
Consumer	2,842		10		5,646		44		3,290		28		6,135		110
Total	$	38,638	$	314	$	68,528	$	314	$	45,416	$	558	$	69,552	$	813

17

The following is an analysis of loans classified as TDR during the three and nine months ended September 30, 2019 and 2018:

	Three Months Ended September 30, 2019					Three Months Ended September 30, 2018
	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	6	$	5,108	$	5,108	1	$	14,511	$	14,511
Consumer	5	276		276		3	123		123
Total	11	$	5,384	$	5,384	4	$	14,634	$	14,634

	Nine Months Ended September 30, 2019					Nine Months Ended September 30, 2018
	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	11	$	6,642	$	6,642	9	$	17,605	$	17,605
Commercial and multifamily residential:
Income property	1	217		217		1	891		891
Consumer	9	394		394		18	2,540		2,540
Total	21	$	7,253	$	7,253	28	$	21,036	$	21,036

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 $1.5 million of additional funds on loans classified as TDR as of September 30, 2019. The Company had $2.1 million of such commitments at December 31, 2018. The Company did not have any loans modified as TDR that defaulted within 12 months of being modified as TDR during the three months ended September 30, 2019. The Company did have one $26 thousand consumer loan that defaulted within 12 months of being modified as a TDR during the nine months ended September 30, 2019. The defaulted TDR loan is collateralized and was included with the loans individually measured for specific impairment. The Company did not experience any similar defaults during the three and nine months ended September 30, 2018.

PCI Loans

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.

18

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 PCI 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 ALLL and remaining valuation discounts as of September 30, 2019 and December 31, 2018:

	September 30, 2019		December 31, 2018
	(in thousands)
Commercial business	$	9,234	$	9,672
Real estate:
One-to-four family residential	8,764		9,848
Commercial and multifamily residential	59,383		66,340
Total real estate	68,147		76,188
Real estate construction:
One-to-four family residential	144		153
Commercial and multifamily residential	462		507
Total real estate construction	606		660
Consumer	8,744		9,765
Subtotal of PCI loans	86,731		96,285
Less:
Valuation discount resulting from acquisition accounting	4,954		6,525
ALLL	3,058		3,611
PCI loans, net of valuation discounts and allowance for loan losses	$	78,719	$	86,149

The following table shows the changes in accretable yield for PCI loans for the three and nine months ended September 30, 2019 and 2018:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2019			2018			2019			2018
	(in thousands)
Balance at beginning of period	$	20,989		$	25,350		$	21,949		$	31,176
Accretion	(1,289		)	(2,233		)	(4,865		)	(6,435		)
Disposals	(45		)	(221		)	61			(387		)
Reclassifications to (from) nonaccretable difference	719			279			3,229			(1,179		)
Balance at end of period	$	20,374		$	23,175		$	20,374		$	23,175

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

We record an ALLL 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 the ALLL calculation during the three and nine months ended September 30, 2019 and 2018.

19

The following tables show a detailed analysis of the ALLL for the three and nine months ended September 30, 2019 and 2018:

	Beginning Balance		Charge-offs			Recoveries		Provision (Recapture)			Ending Balance		Specific Reserve		General Allocation
Three Months Ended September 30, 2019	(in thousands)
Commercial business:
Secured	$	37,862	$	(2,365	)	$	202	$	5,721		$	41,420	$	1,879	$	39,541
Unsecured	3,010		—			156		423			3,589		—		3,589
Real estate:
One-to-four family residential	645		—			65		(107		)	603		5		598
Commercial and multifamily residential:
Commercial land	5,409		—			79		560			6,048		320		5,728
Income property	5,325		—			104		35			5,464		—		5,464
Owner occupied	5,230		—			1		500			5,731		105		5,626
Real estate construction:
One-to-four family residential:
Land and acquisition	153		—			105		(124		)	134		—		134
Residential construction	6,103		—			2,366		(2,852		)	5,617		—		5,617
Commercial and multifamily residential:
Income property	4,198		—			—		(505		)	3,693		—		3,693
Owner occupied	2,412		—			—		595			3,007		—		3,007
Consumer	5,194		(285		)	326		(1,010		)	4,225		17		4,208
PCI	3,269		(722		)	1,812		(1,301		)	3,058		—		3,058
Unallocated	1,707		—			—		(1,636		)	71		—		71
Total	$	80,517	$	(3,372	)	$	5,216	$	299		$	82,660	$	2,326	$	80,334
	Beginning Balance		Charge-offs			Recoveries		Provision (Recapture)			Ending Balance		Specific Reserve		General Allocation
Nine Months Ended September 30, 2019	(in thousands)
Commercial business:
Secured	$	43,188	$	(7,717	)	$	1,040	$	4,909		$	41,420	$	1,879	$	39,541
Unsecured	2,626		(15		)	345		633			3,589		—		3,589
Real estate:
One-to-four family residential	593		(2		)	102		(90		)	603		5		598
Commercial and multifamily residential:
Commercial land	3,947		—			93		2,008			6,048		320		5,728
Income property	4,044		—			152		1,268			5,464		—		5,464
Owner occupied	4,533		—			3		1,195			5,731		105		5,626
Real estate construction:
One-to-four family residential:
Land and acquisition	549		—			236		(651		)	134		—		134
Residential construction	5,536		(170		)	2,956		(2,705		)	5,617		—		5,617
Commercial and multifamily residential:
Income property	5,784		—			1		(2,092		)	3,693		—		3,693
Owner occupied	2,604		—			—		403			3,007		—		3,007
Consumer	5,301		(1,117		)	742		(701		)	4,225		17		4,208
PCI	3,611		(2,626		)	3,389		(1,316		)	3,058		—		3,058
Unallocated	1,053		—			—		(982		)	71		—		71
Total	$	83,369	$	(11,647	)	$	9,059	$	1,879		$	82,660	$	2,326	$	80,334

20

	Beginning Balance		Charge-offs			Recoveries		Provision (Recapture)			Ending Balance		Specific Reserve		General Allocation
Three Months Ended September 30, 2018	(in thousands)
Commercial business:
Secured	$	40,350	$	(576	)	$	496	$	2,912		$	43,182	$	1,139	$	42,043
Unsecured	2,443		(30		)	51		(41		)	2,423		—		2,423
Real estate:
One-to-four family residential	461		—			21		(110		)	372		8		364
Commercial and multifamily residential:
Commercial land	3,278		—			8		(87		)	3,199		—		3,199
Income property	4,102		—			202		(292		)	4,012		1		4,011
Owner occupied	4,356		—			3		316			4,675		71		4,604
Real estate construction:
One-to-four family residential:
Land and acquisition	848		—			582		(742		)	688		—		688
Residential construction	4,572		—			1		660			5,233		—		5,233
Commercial and multifamily residential:
Income property	7,367		—			—		573			7,940		—		7,940
Owner occupied	2,299		—			—		138			2,437		—		2,437
Consumer	5,292		(277		)	266		(258		)	5,023		36		4,987
PCI	4,782		(1,208		)	945		(502		)	4,017		—		4,017
Unallocated	—		—			—		586			586		—		586
Total	$	80,150	$	(2,091	)	$	2,575	$	3,153		$	83,787	$	1,255	$	82,532
	Beginning Balance		Charge-offs			Recoveries		Provision (Recapture)			Ending Balance		Specific Reserve		General Allocation
Nine Months Ended September 30, 2018	(in thousands)
Commercial business:
Secured	$	29,341	$	(8,741	)	$	2,536	$	20,046		$	43,182	$	1,139	$	42,043
Unsecured	2,000		(117		)	356		184			2,423		—		2,423
Real estate:
One-to-four family residential	701		—			389		(718		)	372		8		364
Commercial and multifamily residential:
Commercial land	4,265		—			92		(1,158		)	3,199		—		3,199
Income property	5,672		(223		)	901		(2,338		)	4,012		1		4,011
Owner occupied	5,459		—			19		(803		)	4,675		71		4,604
Real estate construction:
One-to-four family residential:
Land and acquisition	963		—			610		(885		)	688		—		688
Residential construction	3,709		—			6		1,518			5,233		—		5,233
Commercial and multifamily residential:
Income property	7,053		—			—		887			7,940		—		7,940
Owner occupied	4,413		—			—		(1,976		)	2,437		—		2,437
Consumer	5,163		(773		)	796		(163		)	5,023		36		4,987
PCI	6,907		(3,786		)	3,096		(2,200		)	4,017		—		4,017
Unallocated	—		—			—		586			586		—		586
Total	$	75,646	$	(13,640	)	$	8,801	$	12,980		$	83,787	$	1,255	$	82,532

21

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,
	2019			2018		2019			2018
	(in thousands)
Balance at beginning of period	$	3,980		$	3,680	$	4,330		$	3,130
Net changes in the allowance for unfunded commitments and letters of credit	(400		)	275		(750		)	825
Balance at end of period	$	3,580		$	3,955	$	3,580		$	3,955

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 reviewed to assess the ability of our borrowers to service all interest and principal obligations and, as a result, the risk rating or accrual status 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.

22

The following is an analysis of the credit quality of our loan portfolio, excluding PCI loans, as of September 30, 2019 and December 31, 2018:

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
September 30, 2019	(in thousands)
Loans, excluding PCI loans:
Commercial business:
Secured	$	3,433,097	$	30,153	$	92,731	$	2	$	—	$	3,555,983
Unsecured	139,176		—		197		—		—		139,373
Real estate:
One-to-four family residential	272,021		—		1,012		—		—		273,033
Commercial and multifamily residential:
Commercial land	277,264		4,665		13,367		—		—		295,296
Income property	1,917,596		3,918		40,421		—		—		1,961,935
Owner occupied	1,642,558		8,278		47,472		—		—		1,698,308
Real estate construction:
One-to-four family residential:
Land and acquisition	1,614		—		—		—		—		1,614
Residential construction	192,563		—		—		—		—		192,563
Commercial and multifamily residential:
Income property	157,400		—		—		—		—		157,400
Owner occupied	102,246		—		—		—		—		102,246
Consumer	293,484		—		3,343		—		—		296,827
Total	$	8,429,019	$	47,014	$	198,543	$	2	$	—	8,674,578
Less:
ALLL											79,602
Loans, excluding PCI loans, net											$	8,594,976

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
December 31, 2018	(in thousands)
Loans, excluding PCI loans:
Commercial business:
Secured	$	3,160,910	$	48,779	$	103,007	$	5	$	—	$	3,312,701
Unsecured	112,091		21		—		5		—		112,117
Real estate:
One-to-four family residential	234,416		—		1,610		—		—		236,026
Commercial and multifamily residential:
Commercial land	276,348		5,082		4,247		—		—		285,677
Income property	1,876,925		36,998		6,553		—		—		1,920,476
Owner occupied	1,556,852		14,964		45,935		—		—		1,617,751
Real estate construction:
One-to-four family residential:
Land and acquisition	4,099		—		318		—		—		4,417
Residential construction	212,225		—		171		—		—		212,396
Commercial and multifamily residential:
Income property	194,912		—		—		—		—		194,912
Owner occupied	87,063		—		—		—		—		87,063
Consumer	313,817		—		4,398		—		—		318,215
Total	$	8,029,658	$	105,844	$	166,239	$	10	$	—	8,301,751
Less:
ALLL											79,758
Loans, excluding PCI loans, net											$	8,221,993

23

The following is an analysis of the credit quality of our PCI loan portfolio as of September 30, 2019 and December 31, 2018:

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
September 30, 2019	(in thousands)
PCI loans:
Commercial business:
Secured	$	7,008	$	955	$	721	$	—	$	—	$	8,684
Unsecured	550		—		—		—		—		550
Real estate:
One-to-four family residential	8,521		—		243		—		—		8,764
Commercial and multifamily residential:
Commercial land	8,920		642		72		—		—		9,634
Income property	18,737		—		—		—		—		18,737
Owner occupied	25,059		—		5,953		—		—		31,012
Real estate construction:
One-to-four family residential:
Land and acquisition	144		—		—		—		—		144
Commercial and multifamily residential:
Income property	462		—		—		—		—		462
Consumer	8,468		—		276		—		—		8,744
Total	$	77,869	$	1,597	$	7,265	$	—	$	—	86,731
Less:
Valuation discount resulting from acquisition accounting											4,954
ALLL											3,058
PCI loans, net											$	78,719

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
December 31, 2018	(in thousands)
PCI loans:
Commercial business:
Secured	$	8,041	$	—	$	840	$	—	$	—	$	8,881
Unsecured	692		—		99		—		—		791
Real estate:
One-to-four family residential	9,633		—		215		—		—		9,848
Commercial and multifamily residential:
Commercial land	10,363		—		—		—		—		10,363
Income property	19,680		—		—		—		—		19,680
Owner occupied	35,944		—		353		—		—		36,297
Real estate construction:
One-to-four family residential:
Land and acquisition	151		—		2		—		—		153
Commercial and multifamily residential:
Income property	507		—		—		—		—		507
Consumer	9,326		—		439		—		—		9,765
Total	$	94,337	$	—	$	1,948	$	—	$	—	96,285
Less:
Valuation discount resulting from acquisition accounting											6,525
ALLL											3,611
PCI loans, net											$	86,149

24

6. Other Real Estate Owned

The following tables set forth activity in OREO for the three and nine months ended September 30, 2019 and 2018:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2019			2018			2019			2018
	(in thousands)
Balance, beginning of period	$	1,118		$	7,080		$	6,019		$	13,298
Transfers in	—			794			386			1,200
Valuation adjustments	—			(495		)	(195		)	(697		)
Proceeds from sale of OREO property	(588		)	(47		)	(6,382		)	(5,868		)
Gain (loss) on sale of OREO, net	95			(1		)	797			(602		)
Balance, end of period	$	625		$	7,331		$	625		$	7,331

At September 30, 2019, there were $311 thousand in foreclosed residential real estate properties held as OREO. The recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process was $1.3 million.

7. 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, 2019 and concluded that there was no impairment.

The 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,
	2019			2018			2019			2018
	(in thousands)
Goodwill
Total goodwill	$	765,842		$	765,842		$	765,842		$	765,842
Other intangible assets, net
CDI:
Gross CDI balance at beginning of period	105,473			105,473			105,473			105,473
Accumulated amortization at beginning of period	(65,852		)	(54,495		)	(60,455		)	(48,219		)
CDI, net at beginning of period	39,621			50,978			45,018			57,254
CDI current period amortization	(2,632		)	(3,070		)	(8,029		)	(9,346		)
Total CDI, net at end of period	36,989			47,908			36,989			47,908
Intangible assets not subject to amortization	919			919			919			919
Other intangible assets, net at end of period	37,908			48,827			37,908			48,827
Total goodwill and other intangible assets at end of period	$	803,750		$	814,669		$	803,750		$	814,669

25

The following table provides the estimated future amortization expense of our CDI for the remaining three months ending December 31, 2019 and the succeeding four years:

	Year ending December 31,
	(in thousands)
2019	$	2,451
2020	8,724
2021	7,264
2022	5,880
2023	4,552

8. Leases

The Company’s lease commitments consist primarily of leased locations under various non-cancellable operating leases that expire between 2019 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.

The following table shows the details of the Company’s operating lease right-of-use asset and the associated lease liability for the period indicated:

Item	Balance Sheet Location	September 30, 2019
		(in thousands)
Operating lease asset	Other assets	$	51,295
Operating lease liability	Other liabilities	$	57,196

At September 30, 2019, the Company’s operating leases have a weighted-average remaining lease term of 7.5 years and a weighted average discount rate of 3.1%. Cash paid for amounts included in the measurement of operating lease liabilities was $2.8 million for the nine months ended September 30, 2019. Right-of-use assets obtained in exchange for new operating lease liabilities during the nine months ended September 30, 2019 was $9.2 million.

On September 26, 2019 the Company sold one of its Washington facilities and leased back a portion of the facility utilized for branch operations. The resulting gain on the sale was $5.9 million.

The following table shows the components of net lease costs:

		Three Months Ended September 30,			Nine Months Ended September 30,
Item	Statement of Income Location	2019			2019
		(in thousands)
Operating lease cost (1)	Occupancy	$	2,700		$	8,285
Variable lease cost	Occupancy	487			1,510
Sublease income	Occupancy	(297		)	(918		)
Net lease cost		$	2,890		$	8,877

__________

(1) Includes short-term lease costs, which are immaterial.

26

The following table shows future minimum payments for operating leases for the remaining three months of 2019 and subsequent years:

	Year ending December 31,
	(in thousands)
2019	$	2,717
2020	10,619
2021	10,376
2022	9,795
2023	8,546
Thereafter	22,685
Total future minimum lease payments	64,738
Amounts representing interest	(7,542		)
Present value of minimum lease payments	$	57,196

Future minimum lease payments for the Company’s operating leases as of December 31, 2018, prior to the adoption of the new lease guidance were as follows:

	Year Ending December 31,
	(in thousands)
2019	$	10,947
2020	9,766
2021	8,729
2022	8,102
2023	6,796
Thereafter	18,703
Total minimum payments	$	63,043

9. Revolving Line of Credit

During the second quarter of 2019, the Company entered into a $30.0 million short-term credit facility with an unaffiliated bank that matures in May 2020. This facility has a variable interest rate and provides the Company additional liquidity, if needed, for various corporate activities including the repurchase of shares of Columbia Banking System, Inc. common stock. As of September 30, 2019 and December 31, 2018, there was no outstanding balance. The credit agreement requires the Company to comply with certain covenants including those related to asset quality and capital levels. The Company was in compliance with all covenants associated with this facility at September 30, 2019.

10. Derivatives, Hedging Activities and Balance Sheet Offsetting

The Company is exposed to certain risks arising from both its business and economic conditions. The Company principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Company manages economic risks, including interest rate, liquidity, and credit risk, primarily by managing the amount, sources, and duration of its assets and liabilities and the use of derivative financial instruments. Specifically, the Company enters into interest rate-based derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts. The Company’s derivative financial instruments are used to manage differences in the amount, timing, and duration of the Company’s known or expected cash receipts and its known or expected cash payments principally related to the Company’s loan portfolio.

The Company’s objectives in using interest rate derivatives are to add stability to interest income and to manage its exposure to interest rate movements. To accomplish this objective, the Company uses interest rate collars as part of its interest rate risk management strategy. Interest rate collars designated as cash flow hedges involve the payments of variable-rate amounts if interest rates rise above the cap strike rate on the contract and receipts of variable-rate amounts if interest rates fall below the floor strike rate on the contract. These derivative contracts are used to hedge the variable cash flows associated with existing variable-rate assets.

27

With respect to derivatives designated and that qualify as cash flow hedges of interest rate risk, the gain or loss on the derivative is recorded in accumulated other comprehensive income (loss) and subsequently reclassified into interest income in the same period(s) during which the hedged transaction affects earnings. Amounts reported in accumulated other comprehensive income (loss) related to derivatives will be reclassified to interest income as interest payments are received on the Company’s variable-rate assets. During the next 12 months, the Company estimates that there will be $3.1 million reclassified as an increase to interest income.

In addition, 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, 2019 and December 31, 2018 was $396.5 million and $366.7 million, respectively. There was no mark-to-market gain or loss recorded in the three months ended September 30, 2019. During the nine months ended September 30, 2019 there was a $2 thousand mark-to-market loss recorded to “Other” noninterest expense. During the three and nine months ended September 30, 2018, mark-to-market gains of $1 thousand and $9 thousand, respectively, were recorded to “Other” noninterest expense.

The following table presents the fair value of derivatives, as well as their classification on the Balance Sheet at September 30, 2019 and December 31, 2018:

Asset Derivatives

Liability Derivatives

September 30, 2019

December 31, 2018

September 30, 2019

December 31, 2018

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

(in thousands)

Derivatives designated as hedging instruments:

Interest rate collar

Other assets

$

19,703

Other assets

$

—

Other liabilities

$

—

Other liabilities

$

—

Derivatives not designated as hedging instruments:

Interest rate swap contracts

Other assets

$

25,045

Other assets

$

7,033

Other liabilities

$

25,046

Other liabilities

$

7,033

The table below presents the effect of cash flow hedge accounting on accumulated other comprehensive income (loss) at September 30, 2019 and 2018:

	Amount of Gain or (Loss) Recognized in Accumulated Other Comprehensive Income on Derivative				Location of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income	Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income
	Three Months Ended September 30,					Three Months Ended September 30,
	2019		2018			2019		2018
	(in thousands)
Interest rate collar	$	4,088	$	—	Interest income	$	76	$	—
	Nine Months Ended September 30,					Nine Months Ended September 30,
	2019		2018			2019		2018
Interest rate collar	$	19,779	$	—	Interest income	$	76	$	—

The notional amount of the interest rate collar was $500.0 million at September 30, 2019. The cash flow hedge was determined to be effective during the periods presented and, as a result, qualifies for hedge accounting treatment.

28

The Company is party to interest rate swap contracts, interest rate collar 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 contracts, collar agreements and repurchase agreements in the Consolidated Balance Sheets and the respective collateral received or pledged in the form of cash or other financial instruments. 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 Pledged/Received			Net Amount
September 30, 2019	(in thousands)
Assets
Interest rate swap contracts	$	25,045	$	—	$	25,045	$	—		$	25,045
Interest rate collar	$	19,703	$	—	$	19,703	$	(19,703	)	—
Liabilities
Interest rate swap contracts	$	25,046	$	—	$	25,046	$	(25,046	)	$	—
Repurchase agreements	$	24,489	$	—	$	24,489	$	(24,489	)	$	—
December 31, 2018
Assets
Interest rate swap contracts	$	7,033	$	—	$	7,033	$	—		$	7,033
Liabilities
Interest rate swap contracts	$	7,033	$	—	$	7,033	$	(3,235	)	$	3,798
Repurchase agreements	$	61,094	$	—	$	61,094	$	(61,094	)	$	—

The Company’s agreements with each of its derivative counterparties provide that if the Company defaults or is capable of being declared in default on any of its indebtedness, then the Company could also be declared in default on its derivative obligations.

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, 2019	(in thousands)
Class of collateral pledged for repurchase agreements
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	24,489	$	—	$	—	$	—	$	24,489
Gross amount of recognized liabilities for repurchase agreements									24,489
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 $24.5 million 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.

29

11. Commitments and Contingent Liabilities

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, 2019 and December 31, 2018, the Company’s loan commitments amounted to $2.59 billion and $2.62 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 $26.9 million and $28.3 million at September 30, 2019 and December 31, 2018, respectively. In addition, there were $24 thousand commitments under commercial letters of credit used to facilitate customers’ trade transactions and other off-balance sheet liabilities at September 30, 2019 and none at December 31, 2018, 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.

12. Shareholders’ Equity

Dividends:

The following table summarizes year-to-date dividend activity as of September 30, 2019:

Declared	Regular Cash Dividends Per Common Share		Special Cash Dividends Per Common Share		Record Date	Paid Date
January 24, 2019	$	0.28	$	0.14	February 6, 2019	February 20, 2019
April 25, 2019	$	0.28	$	0.14	May 8, 2019	May 22, 2019
July 25, 2019	$	0.28	$	—	August 7, 2019	August 21, 2019

Subsequent to quarter end, on October 24, 2019, the Company declared a regular quarterly cash dividend of $0.28 per common share payable on November 20, 2019 to shareholders of record at the close of business on November 6, 2019.

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.

Share Repurchase Program:

For the three and nine months ended September 30, 2019, the Company repurchased 676 thousand and 1.3 million shares of common stock at an average price of $34.77 and $34.89 per share, respectively. As of September 30, 2019, there are 1.6 million remaining shares authorized to be repurchased under the current Board approved share repurchase program.

30

13. Accumulated Other Comprehensive Income

The following table shows changes in accumulated other comprehensive income (loss) by component for the three and nine months ended September 30, 2019 and 2018:

	Unrealized Gains and Losses on Available-for-Sale Securities (1)			Unrealized Gains and Losses on Pension Plan Liability (1)			Unrealized Gains and Losses on Hedging Instruments (1)			Total (1)
Three Months Ended September 30, 2019	(in thousands)
Beginning balance	$	37,162		$	(2,055	)	$	12,043		$	47,150
Other comprehensive income before reclassifications	14,593			—			3,137			17,730
Amounts reclassified from accumulated other comprehensive income (2)	—			62			(58		)	4
Net current-period other comprehensive income	14,593			62			3,079			17,734
Ending balance	$	51,755		$	(1,993	)	$	15,122		$	64,884
Three Months Ended September 30, 2018
Beginning balance	$	(53,597	)	$	(2,324	)	$	—		$	(55,921	)
Other comprehensive loss before reclassifications	(14,149		)	—			—			(14,149		)
Amounts reclassified from accumulated other comprehensive loss (2)	—			61			—			61
Net current-period other comprehensive income (loss)	(14,149		)	61			—			(14,088		)
Ending balance	$	(67,746	)	$	(2,263	)	$	—		$	(70,009	)
Nine Months Ended September 30, 2019
Beginning balance	$	(33,128	)	$	(2,177	)	$	—		$	(35,305	)
Other comprehensive income before reclassifications	86,519			—			15,180			101,699
Amounts reclassified from accumulated other comprehensive loss (2)	(1,636		)	184			(58		)	(1,510		)
Net current-period other comprehensive income	84,883			184			15,122			100,189
Ending balance	$	51,755		$	(1,993	)	$	15,122		$	64,884
Nine Months Ended September 30, 2018
Beginning balance	$	(19,779	)	$	(2,446	)	$	—		$	(22,225	)
Adjustment pursuant to adoption of ASU 2016-01	157			—			—			157
Other comprehensive loss before reclassifications	(48,043		)	—			—			(48,043		)
Amounts reclassified from accumulated other comprehensive loss (2)	(81		)	183			—			102
Net current-period other comprehensive income (loss)	(48,124		)	183			—			(47,941		)
Ending balance	$	(67,746	)	$	(2,263	)	$	—		$	(70,009	)

__________

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

(2) See following table for details about these reclassifications.

31

The following table shows details regarding the reclassifications from accumulated other comprehensive income (loss) for the three and nine months ended September 30, 2019 and 2018:

	Amount Reclassified from Accumulated Other Comprehensive Income (Loss)
	Three Months Ended September 30,						Nine Months Ended September 30,						Affected line Item in the Consolidated
	2019			2018			2019			2018			Statement of Income
	(in thousands)
Unrealized gains and losses on available for sale debt securities
Investment securities gains, net	$	—		$	—		$	2,132		$	106		Investment securities gains (losses), net
	—			—			2,132			106			Total before tax
	—			—			(496		)	(25		)	Income tax provision
	$	—		$	—		$	1,636		$	81		Net of tax
Amortization of pension plan liability
Actuarial losses	$	(81	)	$	(80	)	$	(240	)	$	(239	)	Compensation and employee benefits
	(81		)	(80		)	(240		)	(239		)	Total before tax
	19			19			56			56			Income tax provision
	$	(62	)	$	(61	)	$	(184	)	$	(183	)	Net of tax
Unrealized gains and losses from hedging instruments
Interest income	$	76		$	—		$	76		$	—		Loans
	76			—			76			—			Total before tax
	(18		)	—			(18		)	—			Income tax provision
	$	58		$	—		$	58		$	—		Net of tax

14. 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 and equity securities, which are considered a Level 1 input method.

32

Interest rate contracts and the interest rate collar 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, 2019 and December 31, 2018 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, 2019	(in thousands)
Assets
Debt securities available for sale:
U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations (1)	$	2,482,835	$	—	$	2,482,835	$	—
Other asset-backed securities (1)	171,578		—		171,578		—
State and municipal debt securities	497,314		—		497,314		—
U.S. government agency and government-sponsored enterprise securities	215,595		—		215,595		—
U.S. government securities	250		250		—		—
Total debt securities available for sale	$	3,367,572	$	250	$	3,367,322	$	—
Other assets:
Interest rate contracts	$	25,045	$	—	$	25,045	$	—
Interest rate collar	$	19,703	$	—	$	19,703	$	—
Liabilities
Other liabilities:
Interest rate contracts	$	25,046	$	—	$	25,046	$	—

	Fair Value		Fair Value Measurements at Reporting Date Using
			Level 1		Level 2		Level 3
December 31, 2018	(in thousands)
Assets
Debt securities available for sale:
U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations (1)	$	2,013,355	$	—	$	2,013,355	$	—
Other asset-backed securities (1)	174,935		—		174,935		—
State and municipal debt securities	574,323		—		574,323		—
U.S. government agency and government-sponsored enterprise securities	404,587		—		404,587		—
U.S. government securities	248		248		—		—
Total debt securities available for sale	$	3,167,448	$	248	$	3,167,200	$	—
Other assets:
Interest rate contracts	$	7,033	$	—	$	7,033	$	—
Liabilities
Other liabilities:
Interest rate contracts	$	7,033	$	—	$	7,033	$	—

__________

(1) Beginning July 2019, other asset-backed securities were presented separately in this table. Prior period amounts that were previously reported in U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations have been reclassified to conform to current period presentation.

There were no transfers between Level 1 and Level 2 of the valuation hierarchy during the nine month periods ended September 30, 2019 and 2018. The Company recognizes transfers between levels of the valuation hierarchy based on the valuation level at the end of the reporting period.

33

Nonrecurring Measurements

Certain assets and liabilities are measured at fair value on a nonrecurring basis after initial recognition such as loans measured for impairment. The following method was used to estimate the fair value of impaired loans:

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. 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 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.

OREO—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, 2019		Fair Value Measurements at Reporting Date Using						Losses During the Three Months Ended September 30, 2019		Losses During the Nine Months Ended September 30, 2019
			Level 1		Level 2		Level 3
	(in thousands)
Impaired loans	$	8,990	$	—	$	—	$	8,990	$	1,722	$	3,299
	$	8,990	$	—	$	—	$	8,990	$	1,722	$	3,299

	Fair value at September 30, 2018		Fair Value Measurements at Reporting Date Using						Losses During the Three Months Ended September 30, 2018		Losses During the Nine Months Ended September 30, 2018
			Level 1		Level 2		Level 3
	(in thousands)
Impaired loans	$	14,616	$	—	$	—	$	14,616	$	1,208	$	1,208
OREO	1,240		—		—		1,240		445		445
	$	15,856	$	—	$	—	$	15,856	$	1,653	$	1,653

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 ALLL. The losses on OREO disclosed above represent the write-downs taken at foreclosure that were charged to the ALLL, as well as subsequent changes in valuation allowances from updated appraisals that were recorded to earnings.

34

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, 2019		Valuation Technique	Unobservable Input	Range (Weighted Average) (1)
	(dollars in thousands)
Impaired loans - collateral-dependent (2)	$	8,990	Fair Market Value of Collateral	Adjustment to Stated Value	0.00% - 100.00% (42.09%)

__________

(1) Discount applied to appraised value or stated value (in the case of accounts receivable, fixed assets and inventory).

(2) Collateral consists of cash, accounts receivable, fixed assets, inventory and real estate.

	Fair value at September 30, 2018		Valuation Technique	Unobservable Input	Range (Weighted Average) (1)
	(dollars in thousands)
Impaired loans - collateral-dependent (3)	$	14,616	Fair Market Value of Collateral	Adjustment to Stated Value	0.00% - 54.51% (6.66%)
OREO	$	1,240	Fair Market Value of Collateral	Adjustment to Appraisal Value	N/A (2)

__________

(1) Discount applied to appraisal value or stated value (in the case of accounts receivable, fixed assets and inventory).

(2) Quantitative disclosures are not provided for OREO because there were no adjustments made to the appraisal values.

(3) Collateral consists of accounts receivable, fixed assets, inventory, cash, real estate, and state guarantee.

35

The following tables summarize carrying amounts and estimated fair values of selected financial instruments by level within the fair value hierarchy at September 30, 2019 and December 31, 2018:

	September 30, 2019
	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
	(in thousands)
Assets
Cash and due from banks	$	278,461	$	278,461	$	278,461	$	—	$	—
Interest-earning deposits with banks	20,144		20,144		20,144		—		—
Debt securities available for sale	3,367,572		3,367,572		250		3,367,322		—
FHLB stock	29,680		29,680		—		29,680		—
Loans held for sale	15,036		15,036		—		15,036		—
Loans	8,673,695		8,895,564		—		—		8,895,564
Interest rate contracts	25,045		24,045		—		24,045		—
Interest rate collar	19,703		19,703		—		19,703		—
Liabilities
Time deposits	$	366,773	$	361,195	$	—	$	361,195	$	—
FHLB advances	492,482		493,736		—		493,736		—
Repurchase agreements	24,489		24,489		—		24,489		—
Subordinated debentures	35,323		35,255		—		35,255		—
Interest rate contracts	25,046		25,046		—		25,046		—

	December 31, 2018
	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
	(in thousands)
Assets
Cash and due from banks	$	260,180	$	260,180	$	260,180	$	—	$	—
Interest-earning deposits with banks	17,407		17,407		17,407		—		—
Debt securities available for sale	3,167,448		3,167,448		248		3,167,200		—
FHLB stock	25,960		25,960		—		25,960		—
Loans held for sale	3,849		3,849		—		3,849		—
Loans	8,308,142		8,316,946		—		—		8,316,946
Interest rate contracts	7,033		7,033		—		7,033		—
Liabilities
Time deposits	$	414,443	$	407,659	$	—	$	407,659	$	—
FHLB advances	399,523		400,085		—		400,085		—
Repurchase agreements	61,094		61,094		—		61,094		—
Subordinated debentures	35,462		34,897		—		34,897		—
Interest rate contracts	7,033		7,033		—		7,033		—

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15. 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 which qualify as participating securities.

The following table sets forth the computation of basic and diluted EPS for the three and nine months ended September 30, 2019 and 2018:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2019		2018		2019		2018
	(in thousands except per share amounts)
Basic EPS:
Net income	$	50,727	$	46,415	$	148,322	$	128,134
Less: Earnings allocated to participating securities:
Nonvested restricted shares	358		504		1,204		1,413
Earnings allocated to common shareholders	$	50,369	$	45,911	$	147,118	$	126,721
Weighted average common shares outstanding	71,803		72,427		72,256		72,370
Basic earnings per common share	$	0.70	$	0.63	$	2.04	$	1.75
Diluted EPS:
Earnings allocated to common shareholders	$	50,369	$	45,911	$	147,118	$	126,721
Weighted average common shares outstanding	71,803		72,427		72,256		72,370
Dilutive effect of equity awards	—		5		1		4
Weighted average diluted common shares outstanding	71,803		72,432		72,257		72,374
Diluted earnings per common share	$	0.70	$	0.63	$	2.04	$	1.75
Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive	—		—		—		5

16. Revenue from Contracts with Customers

Revenue in the scope of Topic 606, Revenue from Contracts with Customers is measured based on the consideration specified in the contract with a customer and excludes amounts collected on behalf of third parties. The vast majority of the Company’s revenue is specifically outside the scope of Topic 606. For in-scope revenue, the following is a description of principal activities, separated by the timing of revenue recognition from which the Company generates its revenue from contracts with customers.

a. Revenue earned at a point in time - Examples of revenue earned at a point in time are ATM transaction fees, wire transfer fees, overdraft fees, interchange fees and foreign exchange transaction fees. Revenue is primarily based on the number and type of transactions and is generally derived from transactional information accumulated by our systems and is recognized immediately as the transactions occur or upon providing the service to complete the customer’s transaction. The Company is the principal in each of these contracts, with the exception of interchange fees, in which case we are acting as the agent and record revenue net of expenses paid to the principal.

b. Revenue earned over time - The Company earns revenue from contracts with customers in a variety of ways where the revenue is earned over a period of time - generally monthly. Examples of this type of revenue are deposit account maintenance fees, investment advisory fees, merchant revenue and safe deposit box fees. Revenue is generally derived from transactional information accumulated by our systems or those of third-parties and is recognized as the related transactions occur or services are rendered to the customer.

37

The Company recognizes revenue from contracts with customers when it satisfies its performance obligations. The Company’s performance obligations are typically satisfied as services are rendered and our contracts generally do not include multiple performance obligations. As a result, there are no contract balances as payments and services are rendered simultaneously. Payment is generally collected at the time services are rendered, monthly or quarterly. Unsatisfied performance obligations at the report date are not material to our consolidated financial statements.

In certain cases, other parties are involved with providing products and services to our customers. If the Company is principal in the transaction (providing goods or services itself), revenues are reported based on the gross consideration received from the customer and any related expenses are reported gross in noninterest expense. If the Company is an agent in the transaction (arranging for another party to provide goods or services), the Company reports its net fee or commission retained as revenue.

Rebates, waivers and reversals are recorded as a reduction of the transaction price either when the revenue is recognized by the Company or at the time the rebate, waiver or reversal is earned by the customer.

Practical expedients

The Company applies the practical expedient in paragraph 606-10-32-18 and does not adjust the consideration from customers for the effects of a significant financing component if at contract inception the period between when the entity transfers the goods or services and when the customer pays for that good or service will be one year or less.

The Company pays sales commissions to its employees in accordance with certain incentive plans and in connection with obtaining certain contracts with customers. The Company applies the practical expedient in paragraph 340-40-25-4 and expenses such sales commissions when incurred if the amortization period of the asset the Company otherwise would have recognized is one year or less. Sales commissions are included in compensation and employee benefits expense.

For the Company’s contracts that have an original expected duration of one year or less, the Company uses the practical expedient in paragraph 606-10-50-14 and has not disclosed the amount of the transaction price allocated to unsatisfied performance obligations as of the end of each reporting period or when the Company expects to recognize this revenue.

Disaggregation of revenue

The following table shows the disaggregation of revenue from contracts with customers for the three and nine month periods ended September 30, 2019 and 2018:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2019		2018		2019		2018
	(in thousands)
Noninterest income:
Revenue from contracts with customers:
Deposit account and treasury management fees	$	9,015	$	9,266	$	27,030	$	26,689
Card revenue	4,006		3,714		11,431		16,143
Financial services and trust revenue	3,226		2,975		9,608		8,924
Total revenue from contracts with customers	16,247		15,955		48,069		51,756
Other sources of noninterest income	11,783		5,064		27,305		16,098
Total noninterest income	$	28,030	$	21,019	$	75,374	$	67,854

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, 2018 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.

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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 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, and infrastructure may not be realized;

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

• possible cessation or market replacement of LIBOR and the related effect on our LIBOR-based financial products and contracts, including, but not limited to, hedging products, debt obligations, investments, and loans;

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

• changes in the scope and cost of FDIC insurance and other coverages;

• the impact of acquired loans on our earnings;

• changes in accounting policies or procedures as may be required by the FASB or other regulatory agencies could materially affect our financial statements and how we report those results, and expectations and preliminary analysis relating to how such changes will affect our financial results could prove incorrect;

• 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;

• 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;

• failure to maintain effective internal controls over financial reporting or disclosure controls and procedures;

• 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.

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.

39

CRITICAL ACCOUNTING POLICIES

Management has identified the accounting policies related to the ALLL, 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 2018 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 2018 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 $50.7 million or $0.70 per diluted common share, compared to $46.4 million or $0.63 per diluted common share for the third quarter of 2018. Net interest income for the three months ended September 30, 2019 was $122.5 million, a decrease of $346 thousand from the prior year period. The decrease was a result of higher interest expense from higher average balances of FHLB advances and interest-bearing public funds, excluding certificates of deposit, partially offset by the increase in interest income from higher average balances of interest-earning assets.

The provision for loan and lease losses for the third quarter of 2019 was $299 thousand compared to $3.2 million during the third quarter of 2018. The lower provision expense recorded in the third quarter of 2019 compared to one year ago was primarily due to the increase in net recoveries and an improvement in the credit quality of our loan portfolio.

Noninterest income for the current quarter was $28.0 million, an increase of $7.0 million from the prior year period. The increase was primarily due to a $5.9 million gain from the sale-leaseback of owned real estate during the third quarter of 2019.

Total noninterest expense for the quarter ended September 30, 2019 was $87.1 million, an increase of $4.2 million from the prior year period. After removing acquisition-related expenses of $1.1 million from the third quarter of 2018, year over year noninterest expense increased $5.3 million, or 7%. This increase was primarily driven by higher compensation and employee benefits expense which was partially offset by a decrease in regulatory premium expenses. The Bank’s FDIC deposit insurance expense was reduced due to the utilization of a portion of our FDIC Small Bank Assessment Credit.

40

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

The Company reported net income for the nine months ended September 30, 2019 of $148.3 million or $2.04 per diluted common share, compared to $128.1 million, or $1.75 per diluted common share for the same period in 2018. Net interest income for the nine months ended September 30, 2019 was $368.6 million, an increase of $13.6 million from the prior year period. The increase was a result of $4.9 million of loan interest recoveries received in 2019 and higher rates and average balances on interest-earning assets, partially offset by higher rates on interest-bearing liabilities and an increase in average FHLB advances.

The provision for loan and lease losses for the nine months ended September 30, 2019 was $1.9 million compared to a provision of $13.0 million for the first nine months of 2018. The decrease in the provision for the first nine months of 2019 compared to the same period in 2018 was due to a reduction in the net charge-offs for the period and an improvement in the credit quality of our loan portfolio.

Noninterest income for the nine months ended September 30, 2019 was $75.4 million, an increase of $7.5 million from the prior year period. The increase was primarily due to the previously noted $5.9 million gain from a sale-leaseback transaction, BOLI benefits, and a net gain on the sale of securities during the nine months ended September 30, 2019. These increases were partially offset by lower card revenue as a result of the interchange fee cap, which became effective on July 1, 2018.

For the nine months ended September 30, 2019, noninterest expense was $258.5 million, an increase of $5.0 million from $253.5 million a year earlier. After removing the acquisition-related expenses of $8.2 million from the first nine months of 2018, year over year noninterest expense increased $13.2 million, or 5%. The increase from the prior year period was driven by higher compensation and employee benefits expense and higher legal and professional fees, partially offset by decreases in OREO expenses.

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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,
	2019						2018
	Average Balances		Interest Earned / Paid		Average Rate (3)		Average Balances		Interest Earned / Paid		Average Rate (3)
	(dollars in thousands)
ASSETS
Loans, net (1)(2)	$	8,694,592	$	114,099	5.21	%	$	8,456,632	$	110,925	5.20	%
Taxable securities	2,654,490		16,457		2.46	%	2,336,405		14,654		2.49	%
Tax exempt securities (2)	447,723		3,235		2.87	%	513,090		3,885		3.00	%
Interest-earning deposits with banks	144,773		864		2.37	%	20,502		104		2.01	%
Total interest-earning assets	11,941,578		134,655		4.47	%	11,326,629		129,568		4.54	%
Other earning assets	230,140						228,332
Noninterest-earning assets	1,288,056						1,250,170
Total assets	$	13,459,774					$	12,805,131
LIABILITIES AND SHAREHOLDERS’ EQUITY
Money market accounts (4)	2,589,390		2,840		0.44	%	2,727,928		1,671		0.24	%
Interest-bearing demand (4)	1,049,833		438		0.17	%	1,089,324		437		0.16	%
Savings accounts (4)	893,395		49		0.02	%	888,997		31		0.01	%
Interest-bearing public funds, other than certificates of deposit (4)	602,674		2,879		1.90	%	229,855		510		0.88	%
Certificates of deposit	381,879		657		0.68	%	440,196		544		0.49	%
Total interest-bearing deposits	5,517,171		6,863		0.49	%	5,376,300		3,193		0.24	%
FHLB advances	400,956		2,569		2.54	%	167,531		966		2.29	%
Subordinated debentures	35,346		468		5.25	%	35,530		468		5.23	%
Other borrowings and interest-bearing liabilities	35,569		183		2.04	%	41,636		152		1.45	%
Total interest-bearing liabilities	5,989,042		10,083		0.67	%	5,620,997		4,779		0.34	%
Noninterest-bearing deposits	5,151,596						5,102,500
Other noninterest-bearing liabilities	166,220						98,317
Shareholders’ equity	2,152,916						1,983,317
Total liabilities & shareholders’ equity	$	13,459,774					$	12,805,131
Net interest income (tax equivalent)			$	124,572					$	124,789
Net interest margin (tax equivalent)					4.14	%					4.37	%

__________

(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 $2.0 million and $2.5 million for the three months ended September 30, 2019 and 2018, respectively. The incremental accretion income on acquired loans was $2.1 million and $3.2 million for the three months ended September 30, 2019 and 2018, respectively.

(2) Tax-exempt income is calculated on a tax equivalent basis. The tax equivalent yield adjustment to interest earned on loans was $1.4 million and $1.2 million for the three months ended September 30, 2019 and 2018, respectively. The tax equivalent yield adjustment to interest earned on tax exempt securities was $679 thousand and $816 thousand for the three months ended September 30, 2019 and 2018, respectively.

(3) Beginning January 2019, average rates were calculated using the actual number of days on an actual/actual basis. This change was done to provide more meaningful trend information for our NIM regardless of the number of days in the period. Prior periods, which were previously reported on a 30/360 basis, have been restated to conform to the current basis.

(4) Beginning July 2019, interest-bearing public funds, other than certificates of deposit are presented separately in this table. Prior period amounts have been reclassified to conform to current period presentation.

42

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,
	2019						2018
	Average Balances		Interest Earned / Paid		Average Rate (3)		Average Balances		Interest Earned / Paid		Average Rate (3)
	(dollars in thousands)
ASSETS
Loans, net (1)(2)	$	8,568,746	$	341,798	5.33	%	$	8,398,596	$	321,542	5.12	%
Taxable securities	2,599,595		49,790		2.56	%	2,202,497		39,285		2.38	%
Tax exempt securities (2)	470,987		10,426		2.96	%	518,128		11,640		3.00	%
Interest-earning deposits with banks	65,374		1,159		2.37	%	48,922		600		1.64	%
Total interest-earning assets	11,704,702		$	403,173	4.61	%	11,168,143		$	373,067	4.47	%
Other earning assets	231,823						222,570
Noninterest-earning assets	1,266,392						1,255,965
Total assets	$	13,202,917					$	12,646,678
LIABILITIES AND SHAREHOLDERS’ EQUITY
Money market accounts (4)	2,571,722		8,321		0.43	%	2,704,471		4,025		0.20	%
Interest-bearing demand (4)	1,063,678		1,230		0.15	%	1,097,523		1,161		0.14	%
Savings accounts (4)	893,738		136		0.02	%	880,561		102		0.02	%
Interest-bearing public funds, other than certificates of deposit (4)	380,853		4,831		1.70	%	247,068		1,367		0.74	%
Certificates of deposit	397,221		1,819		0.61	%	461,236		1,619		0.47	%
Total interest-bearing deposits	5,307,212		16,337		0.41	%	5,390,859		8,274		0.21	%
FHLB advances	500,448		9,962		2.66	%	150,054		2,351		2.09	%
Subordinated debentures	35,392		1,404		5.30	%	35,577		1,404		5.28	%
Other borrowings and interest-bearing liabilities	35,440		552		2.08	%	43,453		288		0.89	%
Total interest-bearing liabilities	5,878,492		$	28,255	0.64	%	5,619,943		$	12,317	0.29	%
Noninterest-bearing deposits	5,069,629						4,969,037
Other noninterest-bearing liabilities	156,432						95,192
Shareholders’ equity	2,098,364						1,962,506
Total liabilities & shareholders’ equity	$	13,202,917					$	12,646,678
Net interest income (tax equivalent)			$	374,918					$	360,750
Net interest margin (tax equivalent)					4.28	%					4.32	%

__________

(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 $6.3 million and $6.8 million for the nine months ended September 30, 2019 and 2018, respectively. The incremental accretion income on acquired loans was $6.8 million and $9.9 million for the nine months ended September 30, 2019 and 2018, respectively.

(2) Tax-exempt income is calculated on a tax equivalent basis. The tax equivalent yield adjustment to interest earned on loans was $4.1 million and $3.4 million for the nine months ended September 30, 2019 and 2018, respectively. The tax equivalent yield adjustment to interest earned on tax exempt securities was $2.2 million and $2.4 million for the nine months ended September 30, 2019 and 2018, respectively.

(3) Beginning January 2019, average rates were calculated using the actual number of days to be on an actual/actual basis. This change was done to provide more meaningful trend information for our NIM regardless of the number of days in the period. Prior periods, which were previously reported on a 30/360 basis, have been restated to conform to the current basis.

(4) Beginning July 2019, interest-bearing public funds, other than certificates of deposit are presented separately in this table. Prior period amounts have been reclassified to conform to current period presentation.

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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, 2019 Compared to 2018 Increase (Decrease) Due to
	Volume			Rate			Total
	(in thousands)
Interest Income
Loans, net	$	3,123		$	51		$	3,174
Taxable securities	1,974			(171		)	1,803
Tax exempt securities	(478		)	(172		)	(650		)
Interest earning deposits with banks	738			22			760
Interest income	$	5,357		$	(270	)	$	5,087
Interest Expense
Deposits:
Money market accounts	$	(89	)	$	1,258		$	1,169
Interest-bearing demand	(16		)	17			1
Savings accounts	—			18			18
Interest-bearing public funds, other than certificates of deposit	1,385			984			2,369
Certificates of deposit	(79		)	192			113
Total interest on deposits	1,201			2,469			3,670
FHLB advances	1,484			119			1,603
Other borrowings and interest-bearing liabilities	(16		)	47			31
Interest expense	$	2,669		$	2,635		$	5,304

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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, 2019 Compared to 2018 Increase (Decrease) Due to
	Volume			Rate			Total
	(in thousands)
Interest Income
Loans, net	$	6,604		$	13,652		$	20,256
Taxable securities	7,454			3,051			10,505
Tax exempt securities	(1,046		)	(168		)	(1,214		)
Interest earning deposits with banks	240			319			559
Interest income	$	13,252		$	16,854		$	30,106
Interest Expense
Deposits:
Money market accounts	(207		)	4,503			4,296
Interest-bearing demand	(37		)	106			69
Savings accounts	2			32			34
Interest-bearing public funds, other than certificates of deposit	1,023			2,441			3,464
Certificates of deposit	(246		)	446			200
Total interest on deposits	535			7,528			8,063
FHLB advances	6,820			791			7,611
Other borrowings	(42		)	306			264
Interest expense	$	7,313		$	8,625		$	15,938

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,
	2019			2018			2019			2018
	(dollars in thousands)
Incremental accretion income due to:
PCI loans	$	113		$	585		$	980		$	1,240
Other acquired loans	1,959			2,643			5,790			8,703
Incremental accretion income	$	2,072		$	3,228		$	6,770		$	9,943
Net interest margin (tax equivalent) (1)	4.14		%	4.37		%	4.28		%	4.32		%
Operating net interest margin (1)(2)	4.12		%	4.34		%	4.28		%	4.29		%

__________

(1) Beginning January 2019, net interest margin (tax equivalent) and operating net interest margin (tax equivalent) were calculated using the actual number of days and on an actual/actual basis. This change was done to provide more meaningful trend information for our NIM regardless of the number of days in the period. Prior periods, which were previously reported on a 30/360 basis, have been restated to conform to the current basis.

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

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Comparison of current quarter to prior year period

Net interest income for the third quarter of 2019 was $122.5 million, down from $122.8 million for the same quarter in 2018. The decrease was a result of higher interest expense from higher average balances of FHLB advances and interest-bearing public funds, excluding certificates of deposit, partially offset by the increase in interest income from higher average balances of interest-earning assets. During the third quarter of 2019, we utilized interest-bearing public funds, excluding certificates of deposit, as an alternative funding source, with a corresponding increase in our investment securities, as we expanded our interest rate risk strategy to partially mitigate the impact of further interest rate cuts. The Company’s net interest margin (tax equivalent) decreased to 4.14% in the third quarter of 2019, from 4.37% for the prior year period. This decrease was driven by higher rates on our deposits and FHLB advances as well as lower accretion income on acquired loans. The Company’s operating net interest margin (tax equivalent) (see footnote 2 in prior table) decreased to 4.12% from 4.34% during the third quarter of 2018. The decrease was due to the items previously noted for the decrease in the net interest margin, except for the lower accretion income, which is not included in the operating net interest margin.

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

Net interest income for the nine months ended September 30, 2019 was $368.6 million, an increase of 4% from $355.0 million for the prior year period. The increase in net interest income was due to $4.9 million of loan interest recoveries recorded in the current year as well as higher rates and average balances on loans while taxable securities increased due to higher average balances. These increases were partially offset by higher rates on deposits and higher average balances of FHLB advances. The Company’s net interest margin (tax equivalent) decreased to 4.28% for the first nine months of 2019, from 4.32% for the prior year period. The decrease in the Company’s net interest margin (tax equivalent) was a result of a $3.2 million decline in accretion income on acquired loans as well as higher rates on our deposits and borrowings, partially offset by higher rates on the loan portfolio. The Company’s operating net interest margin (tax equivalent) for the nine months ended September 30, 2019 remained relatively stable at 4.28% compared to 4.29% for the nine months ended September 30, 2018.

Provision for Loan and Lease Losses

Comparison of current quarter to prior year period

During the third quarter of 2019, the Company recorded a $299 thousand net provision for loan losses compared to a $3.2 million net provision during the third quarter of 2018. The decrease in the provision for loan losses was due to the increase in net recoveries and an improvement in the credit quality of the loan portfolio. The net provision for loan and lease losses recorded during the current quarter included management’s ongoing assessment of the credit quality of the Company’s loan portfolio. Factors affecting the provision include net charge-offs, credit quality migration, and size and composition of the loan portfolio and changes in the economic environment during the third quarter of 2019. The amount of provision was calculated in accordance with the Company’s methodology for determining the ALLL, discussed in Note 5 to the Consolidated Financial Statements in “Item 1. Financial Statements (unaudited)” of this report.

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

The provision for loan and lease losses for the nine months ended September 30, 2019 was $1.9 million compared to $13.0 million during the same period in 2018. The decrease in the provision for the first nine months of 2019 was primarily due to a reduction in the net charge-offs for the period and the improved credit quality of our loan portfolio. We also recorded a large charge-off in our agricultural loan portfolio during the nine months ended September 30, 2018. The amount of provision was calculated in accordance with the Company’s methodology for determining ALLL, discussed in Note 5 to the Consolidated Financial Statements in “Item 1. Financial Statements (unaudited)” of this report.

46

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,
	2019		2018			$ Change			% Change		2019		2018			$ Change			% Change
	(dollars in thousands)
Deposit account and treasury management fees	$	9,015	$	9,266		$	(251	)	(3	)%	$	27,030	$	26,689		$	341		1	%
Card revenue	4,006		3,714			292			8	%	11,431		16,143			(4,712		)	(29	)%
Financial services and trust revenue	3,226		2,975			251			8	%	9,608		8,924			684			8	%
Loan revenue	3,855		3,282			573			17	%	9,840		9,522			318			3	%
Bank owned life insurance	1,528		1,402			126			9	%	4,644		4,540			104			2	%
Investment securities gains (losses), net	—		(62		)	62			(100	)%	2,132		(73		)	2,205			100	%
Other	6,400		442			5,958			100	%	10,689		2,109			8,580			100	%
Total noninterest income	$	28,030	$	21,019		$	7,011		33	%	$	75,374	$	67,854		$	7,520		11	%

Comparison of current quarter to prior year period

Noninterest income was $28.0 million for the third quarter of 2019, compared to $21.0 million for the same period in 2018. The increase was primarily due to the $5.9 million sale-leaseback gain on owned real estate during the third quarter of 2019, which is included in other noninterest income in the table above.

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

For the nine months ended September 30, 2019, noninterest income was $75.4 million compared to $67.9 million for the same period in 2018, an increase of $7.5 million. The increase was due to the previously noted $5.9 million sale-leaseback gain and the $3.0 million of BOLI benefits, both of which are included in other noninterest income in the table above, and the $2.1 million net gain on sale of securities, partially offset by lower card revenue. The decline in card revenue was due to the interchange fee cap, which became effective on July 1, 2018.

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,
	2019			2018		$ Change			% Change		2019			2018		$ Change			% Change
	(dollars in thousands)
Compensation and employee benefits	$	54,459		$	49,419	$	5,040		10	%	$	158,559		$	148,938	$	9,621		6	%
Occupancy	8,645			8,321		324			4	%	26,166			27,718		(1,552		)	(6	)%
Data processing	5,102			4,466		636			14	%	14,372			14,957		(585		)	(4	)%
Legal and professional services	5,683			4,695		988			21	%	16,810			12,103		4,707			39	%
Amortization of intangibles	2,632			3,070		(438		)	(14	)%	8,029			9,346		(1,317		)	(14	)%
B&O taxes (1)	1,325			1,478		(153		)	(10	)%	4,612			4,254		358			8	%
Advertising and promotion	1,752			1,472		280			19	%	3,596			4,523		(927		)	(20	)%
Regulatory premiums	(38		)	904		(942		)	(104	)%	1,902			2,778		(876		)	(32	)%
Net cost (benefit) of operation of OREO	(90		)	485		(575		)	(119	)%	(682		)	1,244		(1,926		)	(155	)%
Other (1)	7,606			8,531		(925		)	(11	)%	25,140			27,610		(2,470		)	(9	)%
Total noninterest expense	$	87,076		$	82,841	$	4,235		5	%	$	258,504		$	253,471	$	5,033		2	%

__________

(1) Beginning the first quarter of 2019, B&O taxes are reported separately from other taxes, licenses and fees, which are now reported under “other noninterest expense.” Prior periods have been reclassified to conform to current period presentation.

47

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,
	2019		2018		2019		2018
	(in thousands)
Acquisition-related expenses:
Compensation and employee benefits	$	—	$	923	$	—	$	3,410
Occupancy	—		29		—		1,619
Data processing	—		20		—		941
Legal and professional fees	—		102		—		893
Advertising and promotion	—		—		—		534
Other	—		7		—		771
Total impact of acquisition-related expense to noninterest expense (1)	$	—	$	1,081	$	—	$	8,168

__________

(1) There were no acquisition-related expenses recorded during the three or nine months ended September 30, 2019. All of the acquisition-related expenses in 2018 were related to the 2017 acquisition of Pacific Continental.

Comparison of current quarter to prior year period

Noninterest expense was $87.1 million for the third quarter of 2019, an increase of $4.2 million from $82.8 million for the prior year period. After removing the acquisition-related expenses of $1.1 million from the third quarter of 2018, year over year noninterest expense increased $5.3 million, or 7%. This increase was primarily driven by higher compensation and employee benefits expense, which was partially offset by a decrease in regulatory premium expense. The Bank’s FDIC deposit insurance expense was reduced due to the utilization of $925 thousand of our FDIC Small Bank Assessment Credit. The remaining balance of our credit is $2.2 million but can only be applied towards our future FDIC deposit insurance expense if the fund exceeds its minimum reserve ratio.

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

For the nine months ended September 30, 2019, noninterest expense was $258.5 million, compared to $253.5 million, an increase of $5.0 million from a year earlier. After removing the acquisition-related expenses of $8.2 million from the first nine months of 2018, year over year noninterest expense increased $13.2 million, or 5%. The increase from the prior year period was driven by higher compensation and employee benefits expense and higher legal and professional fees, partially offset by decreases in OREO expenses. Salary expense increased $6.3 million, benefits expense increased $2.6 million and other compensation increased $2.2 million compared to the first nine months of 2018. Professional fees increased $4.3 million due primarily to the digital corporate initiative. These increases in noninterest expense were partially offset by the $682 thousand current year net benefit of OREO resulting from a gain on the sale of OREO, compared to net OREO operating expenses of $1.2 million during the nine months ended September 30, 2019.

Income Taxes

We recorded an income tax provision of $12.4 million for the third quarter of 2019, compared to a provision of $11.4 million for the same period in 2018, with effective tax rates of 20% for both the third quarter of 2019 and 2018. For the nine months ended September 30, 2019 and 2018, we recorded income tax provisions of $35.3 million and $28.2 million, respectively, with effective tax rates of 19% for the current year and 18% for the prior year period. Our effective tax rate remains lower than the statutory tax rate due to tax-exempt income from municipal securities, BOLI and certain loan receivables. For additional information, please refer to the Company’s annual report on Form 10-K for the year ended December 31, 2018.

48

FINANCIAL CONDITION

Total assets were $13.76 billion at September 30, 2019, an increase of $662.6 million from December 31, 2018. Cash and cash equivalents increased $21.0 million. Loans increased $364.8 million during the current year, which was primarily the result of new loan production and increased seasonal line utilization, partially offset by principal pay downs. Debt securities available for sale were $3.37 billion at September 30, 2019, an increase of $200.1 million from December 31, 2018. Total liabilities were $11.60 billion as of September 30, 2019, an increase of $534.7 million from December 31, 2018. The increase was primarily due to increases in deposits and FHLB advances.

Investment Securities

At September 30, 2019, the Company’s investment portfolio primarily consisted of debt securities available for sale totaling $3.37 billion compared to $3.17 billion at December 31, 2018. The increase in the debt securities portfolio from year-end is due to $649.1 million in purchases and $110.6 million in net unrealized gain offset by $544.9 million in maturities, repayments and sales and $14.7 million in premium amortization. The average duration of our debt securities investment portfolio was approximately 4 years and 4 months at September 30, 2019. 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 securities available for sale 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, 2019, the market value of debt securities available for sale had a net unrealized gain of $67.4 million compared to a net unrealized loss of $43.2 million at December 31, 2018. The change in valuation was the result of fluctuations in market interest rates during the nine months ended September 30, 2019. At September 30, 2019, the Company had $1.15 billion of debt securities available for sale with gross unrealized losses of $11.6 million; however, we did not consider these investment securities to be other-than-temporarily impaired.

49

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

	September 30, 2019		December 31, 2018
	(in thousands)
Debt securities available for sale:
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations (1)	$	2,482,835	$	2,013,355
Other asset-backed securities (1)	171,578		174,935
State and municipal securities	497,314		574,323
U.S. government agency and government-sponsored enterprise securities	215,595		404,587
U.S. government securities	250		248
Total debt securities available for sale	$	3,367,572	$	3,167,448

__________

(1) Beginning July 2019, other asset-backed securities were presented separately in this table. Prior period amounts that were previously reported in U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations have been reclassified to conform to current period presentation.

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 2018 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.

50

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, 2019			% of Total		December 31, 2018			% of Total
	(dollars in thousands)
Commercial business	$	3,707,314		42.3	%	$	3,438,422		41.0	%
Real estate:
One-to-four family residential	273,079			3.1	%	238,367			2.8	%
Commercial and multifamily residential	3,975,647			45.5	%	3,846,027			45.8	%
Total real estate	4,248,726			48.6	%	4,084,394			48.6	%
Real estate construction:
One-to-four family residential	195,198			2.2	%	217,790			2.6	%
Commercial and multifamily residential	261,786			3.0	%	284,394			3.4	%
Total real estate construction	456,984			5.2	%	502,184			6.0	%
Consumer	297,009			3.4	%	318,945			3.8	%
PCI	81,777			0.9	%	89,760			1.1	%
Subtotal	8,791,810			100.4	%	8,433,705			100.5	%
Less: Net unearned income	(35,455		)	(0.4	)%	(42,194		)	(0.5	)%
Loans, net of unearned income (before ALLL)	$	8,756,355		100.0	%	$	8,391,511		100.0	%
Loans held for sale	$	15,036				$	3,849

Total loans increased $364.8 million from year-end 2018 primarily the result of organic loan production and increased seasonal line utilization, partially offset by principal pay downs. The loan portfolio continues to be diversified, with the intent to mitigate risk by monitoring concentration in any one sector. The $35.5 million in unearned income recorded at September 30, 2019 was comprised of $17.9 million in net purchase discounts and $17.6 million in net deferred loan fees. The $42.2 million in unearned income recorded at December 31, 2018 consisted of $26.1 million in net purchase discounts and $16.1 million in net 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, 2019			December 31, 2018
Acquisition:	(in thousands)
Pacific Continental	$	14,813		$	18,526
Intermountain	1,794			2,303
West Coast	3,008			4,578
Other	(1,684		)	725
Total net discount at period end	$	17,931		$	26,132

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.

51

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.

PCI 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) OPPO, if applicable.

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

	September 30, 2019			December 31, 2018
	(dollars in thousands)
Nonperforming assets
Nonaccrual loans:
Commercial business	$	24,408		$	35,513
Real estate:
One-to-four family residential	574			1,158
Commercial and multifamily residential	10,083			14,904
Total real estate	10,657			16,062
Real estate construction:
One-to-four family residential	—			318
Consumer	1,956			2,949
Total nonaccrual loans	37,021			54,842
OREO and OPPO	625			6,049
Total nonperforming assets	$	37,646		$	60,891
Loans, net of unearned income	$	8,756,355		$	8,391,511
Total assets	$	13,757,760		$	13,095,145
Nonperforming loans to period end loans	0.42		%	0.65		%
Nonperforming assets to period end assets	0.27		%	0.46		%

52

At September 30, 2019, nonperforming assets were $37.6 million, compared to $60.9 million at December 31, 2018. Nonperforming assets decreased $23.2 million during the nine months ended September 30, 2019, primarily due to pay downs in nonaccrual commercial business loans and sales of OREO. For further information on OREO, see Note 6 of the Consolidated Financial Statements in “Item 1. Financial Statements (unaudited)” of this report.

Allowance for Loan and Lease Losses

The 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 ALLL 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, 2019, our ALLL was $82.7 million, or 0.94% of total loans (excluding loans held for sale). This compares with an ALLL of $83.4 million, or 0.99% of total loans (excluding loans held for sale) at December 31, 2018 and an ALLL of $83.8 million or 0.98% of total loans (excluding loans held for sale) at September 30, 2018.

53

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

	Three Months Ended September 30,						Nine Months Ended September 30,
	2019			2018			2019			2018
	(dollars in thousands)
Beginning balance, loans excluding PCI loans	$	77,248		$	75,368		$	79,758		$	68,739
Beginning balance, PCI loans	3,269			4,782			3,611			6,907
Beginning balance	80,517			80,150			83,369			75,646
Charge-offs:
Commercial business	(2,365		)	(606		)	(7,732		)	(8,858		)
One-to-four family residential	—			—			(2		)	—
Commercial and multifamily residential	—			—			—			(223		)
One-to-four family residential construction	—			—			(170		)	—
Consumer	(285		)	(277		)	(1,117		)	(773		)
PCI loans	(722		)	(1,208		)	(2,626		)	(3,786		)
Total charge-offs	(3,372		)	(2,091		)	(11,647		)	(13,640		)
Recoveries:
Commercial business	358			547			1,385			2,892
One-to-four family residential	65			21			102			389
Commercial and multifamily residential	184			213			248			1,012
One-to-four family residential construction	2,471			583			3,192			616
Commercial and multifamily residential construction	—			—			1			—
Consumer	326			266			742			796
PCI loans	1,812			945			3,389			3,096
Total recoveries	5,216			2,575			9,059			8,801
Net (charge-offs) recoveries	1,844			484			(2,588		)	(4,839		)
Provision for loan and lease losses, loans excluding PCI loans	1,600			3,655			3,195			15,180
Provision recapture for loan and lease losses, PCI loans	(1,301		)	(502		)	(1,316		)	(2,200		)
Provision for loan and lease losses	299			3,153			1,879			12,980
Ending balance, loans excluding PCI loans	79,602			79,770			79,602			79,770
Ending balance, PCI loans	3,058			4,017			3,058			4,017
Ending balance	$	82,660		$	83,787		$	82,660		$	83,787
Total loans, net at end of period, excluding loans held for sale	$	8,756,355		$	8,514,317		$	8,756,355		$	8,514,317
ALLL to period-end loans	0.94		%	0.98		%	0.94		%	0.98		%
ALLL for unfunded commitments and letters of credit
Beginning balance	$	3,980		$	3,680		$	4,330		$	3,130
Net changes in the ALLL for unfunded commitments and letters of credit	(400		)	275			(750		)	825
Ending balance	$	3,580		$	3,955		$	3,580		$	3,955

54

Liquidity and Sources of Funds

Our primary sources of funds are customer deposits. Additionally, we utilize advances from the FHLB, the FRB, 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 SEC registering an unspecified 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. 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 public funds and brokered and other wholesale deposits on an as-needed basis. The Company participates in the 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, 2019, brokered deposits, reciprocal money market accounts and other wholesale deposits (excluding public funds) totaled $327.6 million, or 3.0% of total deposits, compared to $395.2 million or 3.8% at year-end 2018. These deposits have varied maturities.

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

	September 30, 2019					December 31, 2018
	Balance			% of Total		Balance			% of Total
	(dollars in thousands)
Demand and other noninterest-bearing	$	5,320,435		49.0	%	$	5,227,216		50.0	%
Money market (1)	2,295,229			21.1	%	2,294,125			21.9	%
Interest-bearing demand (1)	1,059,502			9.8	%	1,084,863			10.4	%
Savings (1)	892,438			8.2	%	889,849			8.5	%
Interest-bearing public funds, other than certificates of deposit (1)	629,797			5.8	%	233,938			2.2	%
Certificates of deposit, less than $250,000	223,249			2.1	%	243,849			2.3	%
Certificates of deposit, $250,000 or more	107,506			1.0	%	89,473			0.9	%
Certificates of deposit insured by CDARS®	17,252			0.2	%	23,580			0.2	%
Brokered certificates of deposit	18,852			0.2	%	57,930			0.6	%
Reciprocal money market accounts	291,542			2.6	%	313,692			3.0	%
Subtotal	10,855,802			100.0	%	10,458,515			100.0	%
Valuation adjustment resulting from acquisition accounting	(86		)			(389		)
Total deposits	$	10,855,716				$	10,458,126

__________

(1) Beginning July 2019, interest-bearing public funds, other than certificates of deposit are presented separately in this table. Prior period amounts have been reclassified to conform to current period presentation.

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Borrowings

We rely on FHLB advances and FRB borrowings as another source of both short and long-term funding. FHLB advances and FRB borrowings are secured by investment securities, and residential, commercial and commercial real estate loans. At September 30, 2019, we had FHLB advances of $492.5 million compared to $399.5 million at December 31, 2018.

During the second quarter of 2019, the Company entered into a $30.0 million short-term credit facility with an unaffiliated bank. This facility provides the Company additional liquidity, if needed, for various corporate activities including the repurchase of shares of Columbia Banking System, Inc. common stock. The credit agreement requires the Company to comply with certain covenants including those related to asset quality and capital levels.

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, 2019 and December 31, 2018, we had deposit customer sweep-related repurchase agreements of $24.5 million and $61.1 million, respectively, which mature on a daily basis. 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, 2019, we had commitments to extend credit of $2.62 billion compared to $2.65 billion at December 31, 2018.

Capital Resources

Shareholders’ equity at September 30, 2019 was $2.16 billion, compared to $2.03 billion at December 31, 2018. Shareholders’ equity was 16% of total period-end assets at both September 30, 2019 and December 31, 2018.

Regulatory Capital

In July 2013, the federal bank regulators approved the Capital Rules (as discussed in our 2018 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, which was completed as of January 1, 2019. We believe that, as of September 30, 2019, we and the Bank meet all capital adequacy requirements under the Capital Rules on a fully phased-in basis.

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, 2019 and December 31, 2018.

The following table presents the capital ratios and the capital conservation buffer, as applicable, for the Company and its banking subsidiary at September 30, 2019 and December 31, 2018:

	Company				Columbia Bank
	September 30, 2019		December 31, 2018		September 30, 2019		December 31, 2018
CET1 risk-based capital ratio	12.37	%	12.74	%	12.52	%	12.96	%
Tier 1 risk-based capital ratio	12.37	%	12.74	%	12.52	%	12.96	%
Total risk-based capital ratio	13.53	%	13.99	%	13.34	%	13.85	%
Leverage ratio	10.19	%	10.24	%	10.35	%	10.42	%
Capital conservation buffer	5.53	%	5.99	%	5.34	%	5.85	%

56

Stock Repurchase Program

As described in our Annual Report on Form 10-K for the year ended December 31, 2018, our board of directors approved a stock repurchase program to repurchase up to 2.9 million shares, up to a maximum aggregate purchase price of $100.0 million. 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 EPS while maintaining capital ratios that exceed the guidelines for a well-capitalized financial institution. The Company repurchased 676 thousand and 1.3 million shares of common stock totaling$23.5 million and $45.4 million for the three and nine months ended September 30, 2019, respectively.

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,
	2019			2018			2019			2018
Operating net interest margin non-GAAP reconciliation:	(dollars in thousands)
Net interest income (tax equivalent) (1)	$	124,572		$	124,789		$	374,918		$	360,750
Adjustments to arrive at operating net interest income (tax equivalent):
Incremental accretion income on PCI loans	(113		)	(585		)	(980		)	(1,240		)
Incremental accretion income on other acquired loans	(1,959		)	(2,643		)	(5,790		)	(8,703		)
Premium amortization on acquired securities	1,386			1,859			4,816			6,065
Interest reversals on nonaccrual loans	174			477			1,462			1,147
Operating net interest income (tax equivalent) (1)	$	124,060		$	123,897		$	374,426		$	358,019
Average interest earning assets	$	11,941,578		$	11,326,629		$	11,704,702		$	11,168,143
Net interest margin (tax equivalent) (1)(2)	4.14		%	4.37		%	4.28		%	4.32		%
Operating net interest margin (tax equivalent) (1)(2)	4.12		%	4.34		%	4.28		%	4.29		%

__________

(1) Tax-exempt interest income has been adjusted to a tax equivalent basis. The amount of such adjustment was an addition to net interest income of $2.1 million and $2.0 million for the three months ended September 30, 2019 and 2018, respectively, and an addition to net interest income of $6.3 million and $5.8 million for the nine months ended September 30, 2019 and 2018, respectively.

(2) Beginning January 2019, net interest margin (tax equivalent) and operating net interest margin (tax equivalent) were calculated using the actual number of days and on an actual/actual basis. This change was done to provide more meaningful trend information for our NIM regardless of the number of days in the period. Prior periods, which were previously reported on a 30/360 basis, have been restated to conform to the current basis.

57

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, 2019, 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, 2018. For additional information, refer to Item 7 “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in the Company’s 2018 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 CEO and 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 Controls 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 controls over financial reporting.

58

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, 2018 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, 2019:

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)
7/1/2019 - 7/31/2019	11,822	$	35.32	11,822	2,264,020
8/1/2019 - 8/31/2019	394,202	34.31		393,631	1,870,389
9/1/2019 - 9/30/2019	270,928	35.41		270,928	1,599,461
	676,952	$	34.77	676,381

__________

(1) Common shares repurchased by the Company during the quarter consisted of cancellation of 571 shares of common stock to pay the shareholders’ withholding taxes and 676,381 shares of common stock purchased under the Company’s stock repurchase program.

(2) As described in our Annual Report on Form 10-K for the year ended December 31, 2018, our board of directors approved a stock repurchase program to repurchase up to 2.9 million shares, up to a maximum aggregate purchase price of $100.0 million.

Item 3. DEFAULTS UPON SENIOR SECURITIES

None.

Item 4. MINE SAFETY DISCLOSURES

Not applicable.

Item 5. OTHER INFORMATION

None.

59

Item 6. EXHIBITS

10.1**	Employment Agreement dated September 30, 2019, by and among Columbia State Bank, Columbia Banking System, Inc. and Clint E. Stein (1)
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.INS+	XBRL Instance Document - The instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
101.SCH+	XBRL Taxonomy Extension Schema
101.CAL+	XBRL Taxonomy Extension Calculation Linkbase
101.LAB+	XBRL Taxonomy Extension Label Linkbase
101.PRE+	XBRL Taxonomy Extension Presentation Linkbase
101.DEF+	XBRL Taxonomy Extension Definition Linkbase
104+	Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document).

(1) Incorporated by reference to Exhibit 10.1 of the Company’s Current Report on Form 8-K filed on October 3, 2019

** Management contract or compensatory plan or arrangement

+ Filed herewith

60

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 5, 2019	By	/s/ HADLEY S. ROBBINS
			Hadley S. Robbins
			President and Chief Executive Officer (Principal Executive Officer)
Date:	November 5, 2019	By	/s/ GREGORY A. SIGRIST
			Gregory A. Sigrist
			Executive Vice President and Chief Financial Officer (Principal Financial Officer)
Date:	November 5, 2019	By	/s/ BROCK M. LAKELY
			Brock M. Lakely
			Senior Vice President and Chief Accounting Officer (Principal Accounting Officer)

61

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 5, 2019

EX-31.2

EXHIBIT 31.2

CERTIFICATION

I, Gregory A. Sigrist, 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/ GREGORY A. SIGRIST

Gregory A. Sigrist
Executive Vice President and
Chief Financial Officer

Date: November 5, 2019

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, 2019 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), we, Hadley S. Robbins, President and Chief Executive Officer, and Gregory A. Sigrist, Executive Vice President and Chief Financial Officer, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

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

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

/s/ HADLEY S. ROBBINS

Hadley S. Robbins

President and

Chief Executive Officer

Columbia Banking System, Inc.

/s/ GREGORY A. SIGRIST

Gregory A. Sigrist

Executive Vice President and

Chief Financial Officer

Columbia Banking System, Inc.

Dated: November 5, 2019

XML

Shareholders' Equity Dividends Declared (Tables)

9 Months Ended

Sep. 30, 2019

Shareholders' Equity [Abstract]

Dividends Declared [Table Text Block]

The following table summarizes year-to-date dividend activity as of September 30, 2019:

Declared	Regular Cash Dividends Per Common Share		Special Cash Dividends Per Common Share		Record Date	Paid Date
January 24, 2019	$	0.28	$	0.14	February 6, 2019	February 20, 2019
April 25, 2019	$	0.28	$	0.14	May 8, 2019	May 22, 2019
July 25, 2019	$	0.28	$	—	August 7, 2019	August 21, 2019

XML

Revenue from Contracts with Customers (Tables)

9 Months Ended

Sep. 30, 2019

Disaggregation of Revenue [Line Items]

Disaggregation of Revenue [Table Text Block]

Disaggregation of revenue

The following table shows the disaggregation of revenue from contracts with customers for the three and nine month periods ended September 30, 2019 and 2018:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2019		2018		2019		2018
	(in thousands)
Noninterest income:
Revenue from contracts with customers:
Deposit account and treasury management fees	$	9,015	$	9,266	$	27,030	$	26,689
Card revenue	4,006		3,714		11,431		16,143
Financial services and trust revenue	3,226		2,975		9,608		8,924
Total revenue from contracts with customers	16,247		15,955		48,069		51,756
Other sources of noninterest income	11,783		5,064		27,305		16,098
Total noninterest income	$	28,030	$	21,019	$	75,374	$	67,854

XML

Revolving Line of Credit

9 Months Ended

Sep. 30, 2019

Line of Credit [Member]

Line of Credit Facility [Line Items]

Short-term Debt [Text Block]

Revolving Line of Credit

During the second quarter of 2019, the Company entered into a $30.0 million short-term credit facility with an unaffiliated bank that matures in May 2020. This facility has a variable interest rate and provides the Company additional liquidity, if needed, for various corporate activities including the repurchase of shares of Columbia Banking System, Inc. common stock. As of September 30, 2019 and December 31, 2018, there was no outstanding balance. The credit agreement requires the Company to comply with certain covenants including those related to asset quality and capital levels. The Company was in compliance with all covenants associated with this facility at September 30, 2019.

XML

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

9 Months Ended

Sep. 30, 2019

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 Allowance for Unfunded Commitments and Letters of Credit

We record an ALLL 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 the ALLL calculation during the three and nine months ended September 30, 2019 and 2018.

The following tables show a detailed analysis of the ALLL for the three and nine months ended September 30, 2019 and 2018:

	Beginning Balance		Charge-offs			Recoveries		Provision (Recapture)			Ending Balance		Specific Reserve		General Allocation
Three Months Ended September 30, 2019	(in thousands)
Commercial business:
Secured	$	37,862	$	(2,365	)	$	202	$	5,721		$	41,420	$	1,879	$	39,541
Unsecured	3,010		—			156		423			3,589		—		3,589
Real estate:
One-to-four family residential	645		—			65		(107		)	603		5		598
Commercial and multifamily residential:
Commercial land	5,409		—			79		560			6,048		320		5,728
Income property	5,325		—			104		35			5,464		—		5,464
Owner occupied	5,230		—			1		500			5,731		105		5,626
Real estate construction:
One-to-four family residential:
Land and acquisition	153		—			105		(124		)	134		—		134
Residential construction	6,103		—			2,366		(2,852		)	5,617		—		5,617
Commercial and multifamily residential:
Income property	4,198		—			—		(505		)	3,693		—		3,693
Owner occupied	2,412		—			—		595			3,007		—		3,007
Consumer	5,194		(285		)	326		(1,010		)	4,225		17		4,208
PCI	3,269		(722		)	1,812		(1,301		)	3,058		—		3,058
Unallocated	1,707		—			—		(1,636		)	71		—		71
Total	$	80,517	$	(3,372	)	$	5,216	$	299		$	82,660	$	2,326	$	80,334
	Beginning Balance		Charge-offs			Recoveries		Provision (Recapture)			Ending Balance		Specific Reserve		General Allocation
Nine Months Ended September 30, 2019	(in thousands)
Commercial business:
Secured	$	43,188	$	(7,717	)	$	1,040	$	4,909		$	41,420	$	1,879	$	39,541
Unsecured	2,626		(15		)	345		633			3,589		—		3,589
Real estate:
One-to-four family residential	593		(2		)	102		(90		)	603		5		598
Commercial and multifamily residential:
Commercial land	3,947		—			93		2,008			6,048		320		5,728
Income property	4,044		—			152		1,268			5,464		—		5,464
Owner occupied	4,533		—			3		1,195			5,731		105		5,626
Real estate construction:
One-to-four family residential:
Land and acquisition	549		—			236		(651		)	134		—		134
Residential construction	5,536		(170		)	2,956		(2,705		)	5,617		—		5,617
Commercial and multifamily residential:
Income property	5,784		—			1		(2,092		)	3,693		—		3,693
Owner occupied	2,604		—			—		403			3,007		—		3,007
Consumer	5,301		(1,117		)	742		(701		)	4,225		17		4,208
PCI	3,611		(2,626		)	3,389		(1,316		)	3,058		—		3,058
Unallocated	1,053		—			—		(982		)	71		—		71
Total	$	83,369	$	(11,647	)	$	9,059	$	1,879		$	82,660	$	2,326	$	80,334

	Beginning Balance		Charge-offs			Recoveries		Provision (Recapture)			Ending Balance		Specific Reserve		General Allocation
Three Months Ended September 30, 2018	(in thousands)
Commercial business:
Secured	$	40,350	$	(576	)	$	496	$	2,912		$	43,182	$	1,139	$	42,043
Unsecured	2,443		(30		)	51		(41		)	2,423		—		2,423
Real estate:
One-to-four family residential	461		—			21		(110		)	372		8		364
Commercial and multifamily residential:
Commercial land	3,278		—			8		(87		)	3,199		—		3,199
Income property	4,102		—			202		(292		)	4,012		1		4,011
Owner occupied	4,356		—			3		316			4,675		71		4,604
Real estate construction:
One-to-four family residential:
Land and acquisition	848		—			582		(742		)	688		—		688
Residential construction	4,572		—			1		660			5,233		—		5,233
Commercial and multifamily residential:
Income property	7,367		—			—		573			7,940		—		7,940
Owner occupied	2,299		—			—		138			2,437		—		2,437
Consumer	5,292		(277		)	266		(258		)	5,023		36		4,987
PCI	4,782		(1,208		)	945		(502		)	4,017		—		4,017
Unallocated	—		—			—		586			586		—		586
Total	$	80,150	$	(2,091	)	$	2,575	$	3,153		$	83,787	$	1,255	$	82,532
	Beginning Balance		Charge-offs			Recoveries		Provision (Recapture)			Ending Balance		Specific Reserve		General Allocation
Nine Months Ended September 30, 2018	(in thousands)
Commercial business:
Secured	$	29,341	$	(8,741	)	$	2,536	$	20,046		$	43,182	$	1,139	$	42,043
Unsecured	2,000		(117		)	356		184			2,423		—		2,423
Real estate:
One-to-four family residential	701		—			389		(718		)	372		8		364
Commercial and multifamily residential:
Commercial land	4,265		—			92		(1,158		)	3,199		—		3,199
Income property	5,672		(223		)	901		(2,338		)	4,012		1		4,011
Owner occupied	5,459		—			19		(803		)	4,675		71		4,604
Real estate construction:
One-to-four family residential:
Land and acquisition	963		—			610		(885		)	688		—		688
Residential construction	3,709		—			6		1,518			5,233		—		5,233
Commercial and multifamily residential:
Income property	7,053		—			—		887			7,940		—		7,940
Owner occupied	4,413		—			—		(1,976		)	2,437		—		2,437
Consumer	5,163		(773		)	796		(163		)	5,023		36		4,987
PCI	6,907		(3,786		)	3,096		(2,200		)	4,017		—		4,017
Unallocated	—		—			—		586			586		—		586
Total	$	75,646	$	(13,640	)	$	8,801	$	12,980		$	83,787	$	1,255	$	82,532

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,
	2019			2018		2019			2018
	(in thousands)
Balance at beginning of period	$	3,980		$	3,680	$	4,330		$	3,130
Net changes in the allowance for unfunded commitments and letters of credit	(400		)	275		(750		)	825
Balance at end of period	$	3,580		$	3,955	$	3,580		$	3,955

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 reviewed to assess the ability of our borrowers to service all interest and principal obligations and, as a result, the risk rating or accrual status 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, 2019 and December 31, 2018:

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
September 30, 2019	(in thousands)
Loans, excluding PCI loans:
Commercial business:
Secured	$	3,433,097	$	30,153	$	92,731	$	2	$	—	$	3,555,983
Unsecured	139,176		—		197		—		—		139,373
Real estate:
One-to-four family residential	272,021		—		1,012		—		—		273,033
Commercial and multifamily residential:
Commercial land	277,264		4,665		13,367		—		—		295,296
Income property	1,917,596		3,918		40,421		—		—		1,961,935
Owner occupied	1,642,558		8,278		47,472		—		—		1,698,308
Real estate construction:
One-to-four family residential:
Land and acquisition	1,614		—		—		—		—		1,614
Residential construction	192,563		—		—		—		—		192,563
Commercial and multifamily residential:
Income property	157,400		—		—		—		—		157,400
Owner occupied	102,246		—		—		—		—		102,246
Consumer	293,484		—		3,343		—		—		296,827
Total	$	8,429,019	$	47,014	$	198,543	$	2	$	—	8,674,578
Less:
ALLL											79,602
Loans, excluding PCI loans, net											$	8,594,976

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
December 31, 2018	(in thousands)
Loans, excluding PCI loans:
Commercial business:
Secured	$	3,160,910	$	48,779	$	103,007	$	5	$	—	$	3,312,701
Unsecured	112,091		21		—		5		—		112,117
Real estate:
One-to-four family residential	234,416		—		1,610		—		—		236,026
Commercial and multifamily residential:
Commercial land	276,348		5,082		4,247		—		—		285,677
Income property	1,876,925		36,998		6,553		—		—		1,920,476
Owner occupied	1,556,852		14,964		45,935		—		—		1,617,751
Real estate construction:
One-to-four family residential:
Land and acquisition	4,099		—		318		—		—		4,417
Residential construction	212,225		—		171		—		—		212,396
Commercial and multifamily residential:
Income property	194,912		—		—		—		—		194,912
Owner occupied	87,063		—		—		—		—		87,063
Consumer	313,817		—		4,398		—		—		318,215
Total	$	8,029,658	$	105,844	$	166,239	$	10	$	—	8,301,751
Less:
ALLL											79,758
Loans, excluding PCI loans, net											$	8,221,993

The following is an analysis of the credit quality of our PCI loan portfolio as of September 30, 2019 and December 31, 2018:

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
September 30, 2019	(in thousands)
PCI loans:
Commercial business:
Secured	$	7,008	$	955	$	721	$	—	$	—	$	8,684
Unsecured	550		—		—		—		—		550
Real estate:
One-to-four family residential	8,521		—		243		—		—		8,764
Commercial and multifamily residential:
Commercial land	8,920		642		72		—		—		9,634
Income property	18,737		—		—		—		—		18,737
Owner occupied	25,059		—		5,953		—		—		31,012
Real estate construction:
One-to-four family residential:
Land and acquisition	144		—		—		—		—		144
Commercial and multifamily residential:
Income property	462		—		—		—		—		462
Consumer	8,468		—		276		—		—		8,744
Total	$	77,869	$	1,597	$	7,265	$	—	$	—	86,731
Less:
Valuation discount resulting from acquisition accounting											4,954
ALLL											3,058
PCI loans, net											$	78,719

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
December 31, 2018	(in thousands)
PCI loans:
Commercial business:
Secured	$	8,041	$	—	$	840	$	—	$	—	$	8,881
Unsecured	692		—		99		—		—		791
Real estate:
One-to-four family residential	9,633		—		215		—		—		9,848
Commercial and multifamily residential:
Commercial land	10,363		—		—		—		—		10,363
Income property	19,680		—		—		—		—		19,680
Owner occupied	35,944		—		353		—		—		36,297
Real estate construction:
One-to-four family residential:
Land and acquisition	151		—		2		—		—		153
Commercial and multifamily residential:
Income property	507		—		—		—		—		507
Consumer	9,326		—		439		—		—		9,765
Total	$	94,337	$	—	$	1,948	$	—	$	—	96,285
Less:
Valuation discount resulting from acquisition accounting											6,525
ALLL											3,611
PCI loans, net											$	86,149

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Basis of Presentation and Significant Accounting Policies

9 Months Ended

Sep. 30, 2019

Basis of Presentation And Significant Accounting Policies

Basis of Presentation and Significant Accounting Policies

Basis of Presentation, Significant Accounting Policies and Reclassifications

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, 2019 are not necessarily indicative of results to be anticipated for the year ending December 31, 2019. The accompanying interim unaudited Consolidated Financial Statements should be read in conjunction with the financial statements and related notes contained in the Company’s 2018 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 2018 Annual Report on Form 10-K. There have not been any changes in our significant accounting policies compared to those contained in our 2018 Form 10-K disclosure for the year ended December 31, 2018.

Reclassifications

Certain amounts reported in prior periods have been reclassified in the Consolidated Financial Statements to conform to the current presentation. The reclassifications have no effect on net income or stockholders’ equity as previously reported.

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Fair Value Accounting and Measurement (Financial Assets Accounted For Fair Value On Nonrecurring Basis) (Details) - Fair Value, Nonrecurring [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 8,990	$ 14,616	$ 8,990	$ 14,616
Fair Value, Option, Changes in Fair Value, Gain (Loss)	1,722	1,653	3,299	1,653
Other Real Estate Owned, Fair Value Disclosure		1,240		1,240
Assets, Fair Value Disclosure	8,990	15,856	8,990	15,856
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
Other Real Estate Owned, Fair Value Disclosure		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
Other Real Estate Owned, Fair Value Disclosure		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	8,990	14,616	8,990	14,616
Other Real Estate Owned, Fair Value Disclosure		1,240		1,240
Assets, Fair Value Disclosure	8,990	15,856	8,990	15,856
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)	$ 1,722	1,208	$ 3,299	1,208
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)		$ 445		$ 445

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Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Deposit account and treasury management fees	$ 9,015	$ 9,266	$ 27,030	$ 26,689
Card revenue	4,006	3,714	11,431	16,143
Financial services and trust revenue	3,226	2,975	9,608	8,924
Revenue from contracts with customers	16,247	15,955	48,069	51,756
Noninterest income, excluding revenue from contracts with customers	11,783	5,064	27,305	16,098
Noninterest Income	$ 28,030	$ 21,019	$ 75,374	$ 67,854

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Other Real Estate Owned (Summary of Other Real Estate Owned) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Other Real Estate Owned [Line Items]
Balance, beginning of period	$ 1,118	$ 7,080	$ 6,019	$ 13,298
Transfers in	0	794	386	1,200
Valuation adjustments	0	(495)	(195)	(697)
Proceeds from Sale of OREO Property	588	47	6,382	5,868
Loss on sale of OREO, net	95	(1)	797	(602)
Total OREO, end of period	625	$ 7,331	625	$ 7,331
Mortgage Loans in Process of Foreclosure, Amount	1,300		1,300
One-to-Four Family Residential [Member]
Other Real Estate Owned [Line Items]
Total OREO, end of period	$ 311		$ 311

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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, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision for loan and lease losses	$ 299	$ 3,153	$ 1,879	$ 12,980

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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, 2019		Sep. 30, 2018		Sep. 30, 2019		Sep. 30, 2018		Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance		$ 47,150		$ (55,921)		$ (35,305)		$ (22,225)
Other comprehensive income before reclassifications	[1]	17,730		(14,149)		101,699		(48,043)
Amounts reclassified from accumulated other comprehensive income (2)	[1]	4		61		(1,510)		102
Net current-period other comprehensive income	[1]	17,734		(14,088)		100,189		(47,941)
Ending balance		64,884		(70,009)		64,884		(70,009)
Unrealized Gains and Losses on Available-for-Sale Debt Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance		37,162		(53,597)		(33,128)		(19,779)
Other comprehensive income before reclassifications	[1]	14,593		(14,149)		86,519		(48,043)
Amounts reclassified from accumulated other comprehensive income (2)		0	[2]	0	[1]	(1,636)	[1]	(81)	[1]
Net current-period other comprehensive income	[1]	14,593		(14,149)		84,883		(48,124)
Ending balance		51,755		(67,746)		51,755		(67,746)
Unrealized Gains and Losses on Pension Plan Liability [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance		(2,055)		(2,324)		(2,177)		(2,446)
Other comprehensive income before reclassifications	[1]	0		0		0		0
Amounts reclassified from accumulated other comprehensive income (2)	[1]	62		61		184		183
Net current-period other comprehensive income	[1]	62		61		184		183
Ending balance		(1,993)		(2,263)		(1,993)		(2,263)
Unrealized gains and losses on cash flow hedge
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance		12,043		0		0		0
Other comprehensive income before reclassifications		3,137	[1]	0	[1]	15,180	[2]	0	[1]
Amounts reclassified from accumulated other comprehensive income (2)	[2]	(58)		0		(58)		0
Net current-period other comprehensive income	[1]	3,079		0		15,122		0
Ending balance		$ 15,122		$ 0		$ 15,122		$ 0
Accounting Standards Update 2016-01 [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption										$ 0
Accounting Standards Update 2016-01 [Member] | Unrealized Gains and Losses on Available-for-Sale Debt Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption										157
Accounting Standards Update 2016-01 [Member] | Unrealized Gains and Losses on Pension Plan Liability [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption										0
Accounting Standards Update 2016-01 [Member] | Unrealized gains and losses on cash flow hedge
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption										0
Accounting Standards Update 2016-01 [Member] | Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption										$ 157

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

[2] (2) See following table for details about these reclassifications.

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Consolidated Statements of Changes in Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Treasury Stock [Member]
Shares, Outstanding		73,020
Cumulative Effect of New Accounting Principle in Period of Adoption | Accounting Standards Update 2016-01 [Member]	$ 0		$ (157)	$ 157
Common Stock, Dividends, Per Share, Cash Paid	$ 0.74
Balance, value at Dec. 31, 2017	$ 1,949,922	$ 1,634,705	337,442	(22,225)
Net income	128,134		128,134
Other comprehensive income (loss)	(47,941)			(47,941)
Issuance of common stock - stock option and other plans, shares		45
Issuance of common stock - stock option and other plans, value	$ 1,857	$ 1,857
Stock Adjustment Deferred Compensation - Shares	0
Stock Adjustment Value Deferred Compensation	$ 7
Issuance of common stock - restricted stock awards, net of cancelled awards, shares		257
Issuance of common stock - restricted stock awards, net of cancelled awards, value	6,231	$ 6,231
Stock Repurchased During Period, Shares		(62)
Stock Repurchased and Retired During Period, Value	(2,660)	$ (2,660)
Cash dividends paid on common stock	(54,155)		(54,155)
Balance, value at Sep. 30, 2018	$ 1,981,395	$ 1,640,140	411,264	(70,009)	$ 0
Shares, Outstanding		73,245
Common Stock, Dividends, Per Share, Cash Paid	$ 0.26
Balance, value at Jun. 30, 2018	$ 1,964,881	$ 1,636,903	383,899	(55,921)
Net income	46,415		46,415
Other comprehensive income (loss)	(14,088)			(14,088)
Issuance of common stock - stock option and other plans, shares		26
Issuance of common stock - stock option and other plans, value	$ 1,121	$ 1,121
Stock Adjustment Deferred Compensation - Shares	0
Stock Adjustment Value Deferred Compensation	$ 1
Issuance of common stock - restricted stock awards, net of cancelled awards, shares		(11)
Issuance of common stock - restricted stock awards, net of cancelled awards, value	2,148	$ 2,148
Stock Repurchased During Period, Shares		0
Stock Repurchased and Retired During Period, Value	(33)	$ (33)
Cash dividends paid on common stock	(19,050)		(19,050)
Balance, value at Sep. 30, 2018	$ 1,981,395	$ 1,640,140	411,264	(70,009)	0
Shares, Outstanding		73,260
Shares, Outstanding		73,249
Cumulative Effect of New Accounting Principle in Period of Adoption | Accounting Standards Update 2016-02 [Member]			782
Common Stock, Dividends, Per Share, Cash Paid	$ 1.12
Balance, value at Dec. 31, 2018	$ 2,033,649	$ 1,642,246	426,708	(35,305)	0
Net income	148,322		148,322
Other comprehensive income (loss)	100,189			100,189
Issuance of common stock - stock option and other plans, shares		58
Issuance of common stock - stock option and other plans, value	2,025	$ 2,025
Stock Adjustment Deferred Compensation - Shares		0
Stock Adjustment Value Deferred Compensation	2	$ 2
Issuance of common stock - restricted stock awards, net of cancelled awards, shares		354
Issuance of common stock - restricted stock awards, net of cancelled awards, value	6,827	$ 6,827
Stock Repurchased During Period, Shares		(73)
Stock Repurchased and Retired During Period, Value	(2,765)	$ (2,765)
Cash dividends paid on common stock	$ (82,074)		(82,074)
Treasury Stock, Shares, Acquired	(1,300)	(1,300)
Treasury Stock, Value, Acquired, Cost Method	$ (45,380)				(45,380)
Balance, value at Sep. 30, 2019	$ 2,161,577	$ 1,648,335	493,738	64,884	(45,380)
Shares, Outstanding		72,924
Common Stock, Dividends, Per Share, Cash Paid	$ 0.28
Balance, value at Jun. 30, 2019	$ 2,133,638	$ 1,644,922	463,429	47,150	(21,863)
Net income	50,727		50,727
Other comprehensive income (loss)	17,734			17,734
Issuance of common stock - stock option and other plans, shares		31
Issuance of common stock - stock option and other plans, value	1,132	$ 1,132
Stock Adjustment Deferred Compensation - Shares		0
Stock Adjustment Value Deferred Compensation	1	$ 1
Issuance of common stock - restricted stock awards, net of cancelled awards, shares		9
Issuance of common stock - restricted stock awards, net of cancelled awards, value	2,299	$ 2,299
Stock Repurchased During Period, Shares		0
Stock Repurchased and Retired During Period, Value	(19)	$ (19)
Cash dividends paid on common stock	$ (20,418)		(20,418)
Treasury Stock, Shares, Acquired	(676)	(676)
Treasury Stock, Value, Acquired, Cost Method	$ (23,517)				23,517
Balance, value at Sep. 30, 2019	$ 2,161,577	$ 1,648,335	$ 493,738	$ 64,884	$ (45,380)
Shares, Outstanding		72,288

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Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2019	Dec. 31, 2018
Common Stock, No Par Value	$ 0	$ 0
Preferred Stock, No Par Value	$ 0	$ 0

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Derivatives and Balance Sheet Offsetting Balance Sheet Offsetting (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Balance Sheet Offsetting [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax	$ 0
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net	3,100,000		$ 3,100,000
Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss)	4,088,000	$ 0	19,779,000	$ 0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	76,000	0	76,000	0
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement	24,489,000		24,489,000
Repurchase agreements, amounts offset in balance sheet	0		0		$ 0
Repurchase agreements, net amount presented in statement of financial position	24,489,000		24,489,000		61,094,000
Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Securities	(24,489,000)		(24,489,000)		(61,094,000)
Securities sold under agreements to repurchase, amount not offset	0		0		0
Interest Rate Contracts [Member]
Balance Sheet Offsetting [Line Items]
Derivative Assets, Gross Amounts Offset in the Balance Sheets	0		0		0
Derivative Asset	25,045,000		25,045,000		7,033,000
Derivative, Collateral, Obligation to Return Cash	0		0		0
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	25,045,000		25,045,000		7,033,000
Derivative Liability, Gross Amounts Offset in Balance Sheets	0		0		0
Derivative Liability	25,046,000		25,046,000		7,033,000
Derivative, Collateral, Right to Reclaim Cash	25,046,000		25,046,000		3,235,000
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	0		0		3,798,000
Interest rate collar [Domain]
Balance Sheet Offsetting [Line Items]
Derivative Assets, Gross Amounts Offset in the Balance Sheets	0		0
Derivative Asset	19,703,000		19,703,000
Derivative, Collateral, Obligation to Return Cash	(19,703,000)		(19,703,000)
Derivative Asset, 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	24,489,000		24,489,000		61,094,000
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member]
Balance Sheet Offsetting [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax		$ 1,000	(2,000)	$ 9,000
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member] | Other Assets [Member]
Balance Sheet Offsetting [Line Items]
Fair value of asset derivative instruments	25,045,000		25,045,000		7,033,000
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member] | Other Liabilities [Member]
Balance Sheet Offsetting [Line Items]
Fair value of liability derivative instruments	25,046,000		25,046,000		7,033,000
Designated as Hedging Instrument [Member] | Interest rate collar [Domain] | Other Assets [Member]
Balance Sheet Offsetting [Line Items]
Fair value of asset derivative instruments	19,703,000		19,703,000		0
Designated as Hedging Instrument [Member] | Interest rate collar [Domain] | Other Liabilities [Member]
Balance Sheet Offsetting [Line Items]
Fair value of liability derivative instruments	0		0		$ 0
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Balance Sheet Offsetting [Line Items]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement	24,489,000		24,489,000
Maturity Overnight [Member] | U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Balance Sheet Offsetting [Line Items]
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement	$ 24,489,000		$ 24,489,000

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Future minimum payments for operating leases (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Commitments and Contingencies Disclosure [Abstract]
2019	$ 2,717
2020	10,619
2021	10,376
2022	9,795
2023	8,546
Thereafter	22,685
Total future minimum lease payments	64,738
Amounts representing interest	7,542
Present value of minimum lease payments	$ 57,196

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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, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Proceeds from Sale of Debt Securities, Available-for-sale		$ 0	$ 0	$ 259,554	$ 32,330
Gross Realized Gains from sales of debt securities available for sale		0	0	3,357	235
Gross Realized Losses from sales of debt securities available for sale		0	0	(1,225)	(129)
Other securities losses, net	[1]	0	(62)	0	(179)
Investment securities gain (loss), net		$ 0	$ (62)	$ 2,132	$ (73)

[1] Other securities losses, net includes net unrealized loss activity associated with equity securities for the periods ended September 30, 2018. There were no sales of equity securities during the periods presented.

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Loans (Analysis of Nonaccrual Loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment Nonaccrual Loans	$ 37,021	$ 54,842
Unpaid Principal Balance Nonaccrual Loans	48,126	65,358
Secured Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment Nonaccrual Loans	24,408	35,504
Unpaid Principal Balance Nonaccrual Loans	35,033	45,072
Unsecured Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment Nonaccrual Loans	0	9
Unpaid Principal Balance Nonaccrual Loans	0	9
One-to-Four Family Residential [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment Nonaccrual Loans	574	1,158
Unpaid Principal Balance Nonaccrual Loans	594	1,178
Commercial Land [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment Nonaccrual Loans	2,562	2,261
Unpaid Principal Balance Nonaccrual Loans	2,570	2,270
Income Property Multifamily [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment Nonaccrual Loans	997	2,721
Unpaid Principal Balance Nonaccrual Loans	997	3,062
Owner Occupied [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment Nonaccrual Loans	6,524	9,922
Unpaid Principal Balance Nonaccrual Loans	6,633	10,300
Land And Acquisition [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment Nonaccrual Loans	0	318
Unpaid Principal Balance Nonaccrual Loans	0	318
Consumer Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment Nonaccrual Loans	1,956	2,949
Unpaid Principal Balance Nonaccrual Loans	$ 2,299	$ 3,149

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Securities (Tables)

9 Months Ended

Sep. 30, 2019

Debt Securities, Available-for-sale [Abstract]

Securities Available for Sale

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

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
September 30, 2019	(in thousands)
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations (1)	$	2,432,873	$	61,024	$	(11,062	)	$	2,482,835
Other asset-backed securities (1)	166,482		5,149		(53		)	171,578
State and municipal securities	488,273		9,471		(430		)	497,314
U.S. government agency and government-sponsored enterprise securities	212,265		3,382		(52		)	215,595
U.S. government securities	250		—		—			250
Total	$	3,300,143	$	79,026	$	(11,597	)	$	3,367,572
December 31, 2018
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations (1)	$	2,045,728	$	8,473	$	(40,846	)	$	2,013,355
Other asset-backed securities (1)	176,793		763		(2,621		)	174,935
State and municipal securities	579,755		2,328		(7,760		)	574,323
U.S. government agency and government-sponsored enterprise securities	408,088		1,235		(4,736		)	404,587
U.S. government securities	251		—		(3		)	248
Total	$	3,210,615	$	12,799	$	(55,966	)	$	3,167,448

__________

(1) Beginning July 2019, other asset-backed securities were presented separately in this table. Prior period amounts that were previously reported in U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations have been reclassified to conform to current period presentation.

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

The following table provides the proceeds and both gross realized gains and losses on sales of debt securities available for sale as well as other securities gains and losses for the periods indicated:

	Three Months Ended September 30,					Nine Months Ended September 30,
	2019		2018			2019			2018
	(in thousands)
Proceeds from sales of debt securities available for sale	$	—	$	—		$	259,554		$	32,330
Gross realized gains from sales of debt securities available for sale	$	—	$	—		$	3,357		$	235
Gross realized losses from sales of debt securities available for sale	—		—			(1,225		)	(129		)
Other securities losses, net (1)	—		(62		)	—			(179		)
Investment securities gains, net	$	—	$	(62	)	$	2,132		$	(73	)

__________

(1) Other securities losses, net includes net unrealized loss activity associated with equity securities for the periods ended September 30, 2018. There were no sales of equity securities during the periods presented.

Schedule of Contractual Maturities of Investment Securities Available for Sale

The scheduled contractual maturities of debt securities available for sale at September 30, 2019 are presented as follows:

	September 30, 2019
	Amortized Cost		Fair Value
	(in thousands)
Due within one year	$	112,412	$	112,594
Due after one year through five years	412,269		416,294
Due after five years through ten years	1,592,778		1,650,631
Due after ten years	1,182,684		1,188,053
Total debt securities available for sale	$	3,300,143	$	3,367,572

Carrying Value of Securities Pledged As Collateral

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

	September 30, 2019
	(in thousands)
To secure public funds	$	443,320
To secure borrowings	111,421
Other securities pledged	155,727
Total securities pledged as collateral	$	710,468

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 debt securities available for sale 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, 2019 and December 31, 2018:

	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
September 30, 2019	(in thousands)
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations (1)	$	478,690	$	(4,017	)	$	528,228	$	(7,045	)	$	1,006,918	$	(11,062	)
Other asset-backed securities (1)	—		—			6,926		(53		)	6,926		(53		)
State and municipal securities	52,763		(255		)	23,237		(175		)	76,000		(430		)
U.S. government agency and government-sponsored enterprise securities	—		—			57,448		(52		)	57,448		(52		)
U.S. government securities	—		—			250		—			250		—
Total	$	531,453	$	(4,272	)	$	616,089	$	(7,325	)	$	1,147,542	$	(11,597	)
December 31, 2018
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations (1)	$	114,551	$	(750	)	$	1,207,020	$	(40,096	)	$	1,321,571	$	(40,846	)
Other asset-backed securities (1)	40,071		(222		)	94,367		(2,399		)	134,438		(2,621		)
State and municipal securities	106,292		(581		)	280,496		(7,179		)	386,788		(7,760		)
U.S. government agency and government-sponsored enterprise securities	15,392		(45		)	291,435		(4,691		)	306,827		(4,736		)
U.S. government securities	—		—			247		(3		)	247		(3		)
Total	$	276,306	$	(1,598	)	$	1,873,565	$	(54,368	)	$	2,149,871	$	(55,966	)

__________

(1) Beginning July 2019, other asset-backed securities were presented separately in this table. Prior period amounts that were previously reported in U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations have been reclassified to conform to current period presentation.

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Accumulated Other Comprehensive Income

9 Months Ended

Sep. 30, 2019

Accumulated Other Comprehensive Income (Loss) [Abstract]

Accumulated Other Comprehensive Income

Accumulated Other Comprehensive Income

The following table shows changes in accumulated other comprehensive income (loss) by component for the three and nine months ended September 30, 2019 and 2018:

	Unrealized Gains and Losses on Available-for-Sale Securities (1)			Unrealized Gains and Losses on Pension Plan Liability (1)			Unrealized Gains and Losses on Hedging Instruments (1)			Total (1)
Three Months Ended September 30, 2019	(in thousands)
Beginning balance	$	37,162		$	(2,055	)	$	12,043		$	47,150
Other comprehensive income before reclassifications	14,593			—			3,137			17,730
Amounts reclassified from accumulated other comprehensive income (2)	—			62			(58		)	4
Net current-period other comprehensive income	14,593			62			3,079			17,734
Ending balance	$	51,755		$	(1,993	)	$	15,122		$	64,884
Three Months Ended September 30, 2018
Beginning balance	$	(53,597	)	$	(2,324	)	$	—		$	(55,921	)
Other comprehensive loss before reclassifications	(14,149		)	—			—			(14,149		)
Amounts reclassified from accumulated other comprehensive loss (2)	—			61			—			61
Net current-period other comprehensive income (loss)	(14,149		)	61			—			(14,088		)
Ending balance	$	(67,746	)	$	(2,263	)	$	—		$	(70,009	)
Nine Months Ended September 30, 2019
Beginning balance	$	(33,128	)	$	(2,177	)	$	—		$	(35,305	)
Other comprehensive income before reclassifications	86,519			—			15,180			101,699
Amounts reclassified from accumulated other comprehensive loss (2)	(1,636		)	184			(58		)	(1,510		)
Net current-period other comprehensive income	84,883			184			15,122			100,189
Ending balance	$	51,755		$	(1,993	)	$	15,122		$	64,884
Nine Months Ended September 30, 2018
Beginning balance	$	(19,779	)	$	(2,446	)	$	—		$	(22,225	)
Adjustment pursuant to adoption of ASU 2016-01	157			—			—			157
Other comprehensive loss before reclassifications	(48,043		)	—			—			(48,043		)
Amounts reclassified from accumulated other comprehensive loss (2)	(81		)	183			—			102
Net current-period other comprehensive income (loss)	(48,124		)	183			—			(47,941		)
Ending balance	$	(67,746	)	$	(2,263	)	$	—		$	(70,009	)

__________

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

(2) See following table for details about these reclassifications.

The following table shows details regarding the reclassifications from accumulated other comprehensive income (loss) for the three and nine months ended September 30, 2019 and 2018:

	Amount Reclassified from Accumulated Other Comprehensive Income (Loss)
	Three Months Ended September 30,						Nine Months Ended September 30,						Affected line Item in the Consolidated
	2019			2018			2019			2018			Statement of Income
	(in thousands)
Unrealized gains and losses on available for sale debt securities
Investment securities gains, net	$	—		$	—		$	2,132		$	106		Investment securities gains (losses), net
	—			—			2,132			106			Total before tax
	—			—			(496		)	(25		)	Income tax provision
	$	—		$	—		$	1,636		$	81		Net of tax
Amortization of pension plan liability
Actuarial losses	$	(81	)	$	(80	)	$	(240	)	$	(239	)	Compensation and employee benefits
	(81		)	(80		)	(240		)	(239		)	Total before tax
	19			19			56			56			Income tax provision
	$	(62	)	$	(61	)	$	(184	)	$	(183	)	Net of tax
Unrealized gains and losses from hedging instruments
Interest income	$	76		$	—		$	76		$	—		Loans
	76			—			76			—			Total before tax
	(18		)	—			(18		)	—			Income tax provision
	$	58		$	—		$	58		$	—		Net of tax

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Commitments and contingent liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Commitments to Extend Credit [Member]
Other Commitments [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability	$ 2,590,000	$ 2,620,000
Standby Letters of Credit [Member]
Other Commitments [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability	26,900	28,300
Commercial Letter of Credit and other off-balance sheet liabilities [Member]
Other Commitments [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability	$ 24	$ 0

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Leases Prior disclosed minimum lease payments schedule (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Leases ASC 840 [Abstract]
2019	$ 10,947
2020	9,766
2021	8,729
2022	8,102
2023	6,796
Thereafter	18,703
Total minimum payments	$ 63,043

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Accumulated Other Comprehensive Income (Reclassification out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment securities gains, net			$ 2,132	$ (73)
Total before tax	$ 63,105	$ 57,821	183,579	156,354
Income tax provision	(12,378)	(11,406)	(35,257)	(28,220)
Compensation and employee benefits	54,459	49,419	158,559	148,938
Net income	50,727	46,415	148,322	128,134
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains and Losses on Available-for-Sale Debt Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment securities gains, net	0	0	2,132	106
Total before tax	0	0	2,132	106
Income tax provision	0	0	(496)	(25)
Net income	0	0	1,636	81
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]
Total before tax	(81)	(80)	(240)	(239)
Income tax provision	19	19	56	56
Compensation and employee benefits	(81)	(80)	(240)	(239)
Net income	(62)	(61)	(184)	(183)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized gains and losses from hedging instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	76	0	76	0
Income tax provision	(18)	0	(18)	0
Net income	58	0	58	0
Interest income	$ 76	$ 0	$ 76	$ 0

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Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net unrealized holding gain (loss) from available for sale securities arising during the period, tax	$ (4,421)	$ 4,286	$ (26,209)	$ 14,554
Reclassification adjustment of net gain from sale of available for sale securities included in income, tax	0	0	496	25
Less: amortization of unrecognized net actuarial loss included in net periodic pension cost, tax	(19)	(19)	(56)	(56)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax	(951)	0	(4,599)	0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	$ 18	$ 0	$ 18	$ 0

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Consolidated Balance Sheets - USD ($) shares in Thousands, $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
ASSETS
Cash and Due from Banks	$ 278,461	$ 260,180
Interest-earning deposits with banks	20,144	17,407
Total cash and cash equivalents	298,605	277,587
Debt securities available for sale at fair value	3,367,572	3,167,448
FHLB stock at cost	29,680	25,960
Loans held for sale	15,036	3,849
Loans, net of unearned income	8,756,355	8,391,511
Less: ALLL	82,660	83,369
Loans, net	8,673,695	8,308,142
Interest receivable	48,503	45,323
Premises and equipment, net	165,431	168,788
OREO	625	6,019
Goodwill	765,842	765,842
Other intangible assets, net	37,908	45,937
Other assets	354,863	280,250
Total assets	13,757,760	13,095,145
LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest-bearing	5,320,435	5,227,216
Interest-bearing	5,535,281	5,230,910
Total deposits	10,855,716	10,458,126
FHLB advances	492,482	399,523
Securities sold under agreements to repurchase	24,489	61,094
Subordinated debentures	35,323	35,462
Other liabilities	188,173	107,291
Total liabilities	11,596,183	11,061,496
Commitments and contingent liabilities (Note 11)
Shareholders' equity:
Preferred Stock, Authorized shares	2,000	2,000
Common Stock Authorized shares	115,000	115,000
Common Stock Shares Issued	73,588	73,249
Common Stock Issued value	$ 1,648,335	$ 1,642,246
Common Stock, Shares, Outstanding	72,288	73,249
Retained earnings	$ 493,738	$ 426,708
Accumulated other comprehensive income (loss)	$ 64,884	$ (35,305)
Treasury Stock, Shares	1,300	0
Treasury Stock, Value	$ (45,380)	$ 0
Total shareholders’ equity	2,161,577	2,033,649
Total liabilities and shareholders’ equity	$ 13,757,760	$ 13,095,145

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Securities (Carrying Value of Securities Pledged as Collateral) (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Restricted	$ 710,468
To secure public funds
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Restricted	443,320
To secure borrowings
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Restricted	111,421
Other securities pledged
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Restricted	$ 155,727

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Loans (Analysis of Loan Portfolio by Major Types of Loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net of unearned income	$ 8,756,355		$ 8,391,511
Less: unearned income on loans	(35,455)		(42,194)
Allowance for loan losses	(82,660)	$ (80,517)	(83,369)	$ (83,787)	$ (80,150)	$ (75,646)
Loans, net	8,673,695		8,308,142
Loans held for sale	15,036		3,849
Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	8,674,578		8,301,751
Loans, net of unearned income	8,674,578		8,301,751
Less: unearned income on loans	(35,455)		(42,194)
Allowance for loan losses	(79,602)		(79,758)
Loans, net	8,594,976		8,221,993
Loans held for sale	15,036		3,849
Purchased Credit Impaired Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	86,731		96,285
Loans, net of unearned income	81,777		89,760
Less: unearned income on loans	0		0
Allowance for loan losses	(3,058)		(3,611)
Loans, net	78,719		86,149
Loans held for sale	0		0
Acquisition Accounting Valuation Discount on Covered Loans	4,954		6,525
Commercial Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	3,716,318		3,447,662
Commercial Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	3,707,314		3,438,422
Commercial Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	9,234		9,672
Loans, net of unearned income	9,004		9,240
One-to-Four Family Residential [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	280,482		246,384
Allowance for loan losses	(603)	(645)	(593)	(372)	(461)	(701)
One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	273,079		238,367
Loans, net of unearned income	273,033		236,026
One-to-Four Family Residential [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	8,764		9,848
Loans, net of unearned income	7,403		8,017
One-to-Four Family Residential Construction [Domain]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	195,342		217,943
One-to-Four Family Residential Construction [Domain] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	195,198		217,790
One-to-Four Family Residential Construction [Domain] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	144		153
Loans, net of unearned income	144		153
Commercial and Multifamily Residential [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	4,032,349		3,908,937
Commercial and Multifamily Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	3,975,647		3,846,027
Commercial and Multifamily Residential [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	59,383		66,340
Loans, net of unearned income	56,702		62,910
Real Estate Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	4,312,831		4,155,321
Real Estate Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	4,248,726		4,084,394
Real Estate Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	68,147		76,188
Loans, net of unearned income	64,105		70,927
Real Estate Construction Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	457,614		502,871
Real Estate Construction Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	456,984		502,184
Real Estate Construction Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	606		660
Loans, net of unearned income	630		687
Consumer Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	305,047		327,851
Allowance for loan losses	(4,225)	$ (5,194)	(5,301)	$ (5,023)	$ (5,292)	$ (5,163)
Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	297,009		318,945
Loans, net of unearned income	296,827		318,215
Consumer Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	8,744		9,765
Loans, net of unearned income	8,038		8,906
Commercial and Multifamily Residential Construction [Domain]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	262,272		284,928
Commercial and Multifamily Residential Construction [Domain] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	261,786		284,394
Commercial and Multifamily Residential Construction [Domain] | Purchased Credit Impaired Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	462		507
Loans, net of unearned income	$ 486		$ 534

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Loans (Tables)

9 Months Ended

Sep. 30, 2019

Financing Receivable, Credit Quality Indicator [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, 2019									December 31, 2018
	Loans, excluding PCI loans			PCI Loans			Total			Loans, excluding PCI loans			PCI Loans			Total
	(in thousands)
Commercial business	$	3,707,314		$	9,004		$	3,716,318		$	3,438,422		$	9,240		$	3,447,662
Real estate:
One-to-four family residential	273,079			7,403			280,482			238,367			8,017			246,384
Commercial and multifamily residential	3,975,647			56,702			4,032,349			3,846,027			62,910			3,908,937
Total real estate	4,248,726			64,105			4,312,831			4,084,394			70,927			4,155,321
Real estate construction:
One-to-four family residential	195,198			144			195,342			217,790			153			217,943
Commercial and multifamily residential	261,786			486			262,272			284,394			534			284,928
Total real estate construction	456,984			630			457,614			502,184			687			502,871
Consumer	297,009			8,038			305,047			318,945			8,906			327,851
Less: Net unearned income	(35,455		)	—			(35,455		)	(42,194		)	—			(42,194		)
Total loans, net of unearned income	8,674,578			81,777			8,756,355			8,301,751			89,760			8,391,511
Less: ALLL	(79,602		)	(3,058		)	(82,660		)	(79,758		)	(3,611		)	(83,369		)
Total loans, net	$	8,594,976		$	78,719		$	8,673,695		$	8,221,993		$	86,149		$	8,308,142
Loans held for sale	$	15,036		$	—		$	15,036		$	3,849		$	—		$	3,849

Loans, Excluding Purchased Credit Impaired Loans [Member]

Financing Receivable, Credit Quality Indicator [Line Items]

Analysis of Nonaccrual Loans

The following is an analysis of nonaccrual loans as of September 30, 2019 and December 31, 2018:

	September 30, 2019				December 31, 2018
	Recorded Investment Nonaccrual Loans		Unpaid Principal Balance Nonaccrual Loans		Recorded Investment Nonaccrual Loans		Unpaid Principal Balance Nonaccrual Loans
	(in thousands)
Commercial business:
Secured	$	24,408	$	35,033	$	35,504	$	45,072
Unsecured	—		—		9		9
Real estate:
One-to-four family residential	574		594		1,158		1,178
Commercial and multifamily residential:
Commercial land	2,562		2,570		2,261		2,270
Income property	997		997		2,721		3,062
Owner occupied	6,524		6,633		9,922		10,300
Real estate construction:
One-to-four family residential:
Land and acquisition	—		—		318		318
Consumer	1,956		2,299		2,949		3,149
Total	$	37,021	$	48,126	$	54,842	$	65,358

Analysis of the Aged Loan Portfolio

The following is an aging of the recorded investment of the loan portfolio as of September 30, 2019 and December 31, 2018:

	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, 2019	(in thousands)
Commercial business:
Secured	$	3,525,753	$	5,560	$	262	$	—	$	5,822	$	24,408	$	3,555,983
Unsecured	138,947		424		2		—		426		—		139,373
Real estate:
One-to-four family residential	269,593		2,429		437		—		2,866		574		273,033
Commercial and multifamily residential:
Commercial land	292,594		140		—		—		140		2,562		295,296
Income property	1,955,634		2,038		3,266		—		5,304		997		1,961,935
Owner occupied	1,689,919		1,727		138		—		1,865		6,524		1,698,308
Real estate construction:
One-to-four family residential:
Land and acquisition	1,614		—		—		—		—		—		1,614
Residential construction	192,563		—		—		—		—		—		192,563
Commercial and multifamily residential:
Income property	151,362		6,038		—		—		6,038		—		157,400
Owner occupied	100,610		1,636		—		—		1,636		—		102,246
Consumer	293,861		746		264		—		1,010		1,956		296,827
Total	$	8,612,450	$	20,738	$	4,369	$	—	$	25,107	$	37,021	$	8,674,578
	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, 2018	(in thousands)
Commercial business:
Secured	$	3,267,709	$	5,864	$	3,624	$	—	$	9,488	$	35,504	$	3,312,701
Unsecured	111,868		240		—		—		240		9		112,117
Real estate:
One-to-four family residential	233,941		694		233		—		927		1,158		236,026
Commercial and multifamily residential:
Commercial land	283,416		—		—		—		—		2,261		285,677
Income property	1,910,505		5,009		2,241		—		7,250		2,721		1,920,476
Owner occupied	1,606,085		1,744		—		—		1,744		9,922		1,617,751
Real estate construction:
One-to-four family residential:
Land and acquisition	4,099		—		—		—		—		318		4,417
Residential construction	212,303		93		—		—		93		—		212,396
Commercial and multifamily residential:
Income property	194,912		—		—		—		—		—		194,912
Owner occupied	79,805		7,258		—		—		7,258		—		87,063
Consumer	314,008		1,057		201		—		1,258		2,949		318,215
Total	$	8,218,651	$	21,959	$	6,299	$	—	$	28,258	$	54,842	$	8,301,751

Impaired Financing Receivables

The following is an analysis of impaired loans as of September 30, 2019 and December 31, 2018:

	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, 2019	(in thousands)
Commercial business:
Secured	$	3,530,404	$	25,579	$	9,114	$	10,673	$	1,879	$	16,465	$	21,051
Unsecured	139,360		13		13		13		—		—		—
Real estate:
One-to-four family residential	272,686		347		347		635		5		—		—
Commercial and multifamily residential:
Commercial land	292,436		2,860		1,591		1,601		320		1,269		1,304
Income property	1,961,935		—		—		—		—		—		—
Owner occupied	1,688,118		10,190		3,733		5,260		105		6,457		6,599
Real estate construction:
One-to-four family residential:
Land and acquisition	1,614		—		—		—		—		—		—
Residential construction	192,563		—		—		—		—		—		—
Commercial and multifamily residential:
Income property	157,400		—		—		—		—		—		—
Owner occupied	102,246		—		—		—		—		—		—
Consumer	294,599		2,228		379		514		17		1,849		2,006
Total	$	8,633,361	$	41,217	$	15,177	$	18,696	$	2,326	$	26,040	$	30,960
	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, 2018	(in thousands)
Commercial business:
Secured	$	3,286,416	$	26,285	$	6,350	$	8,460	$	2,023	$	19,935	$	24,404
Unsecured	112,097		20		20		20		—		—		—
Real estate:
One-to-four family residential	235,138		888		325		798		8		563		575
Commercial and multifamily residential:
Commercial land	283,451		2,226		—		—		—		2,226		2,272
Income property	1,917,522		2,954		99		165		1		2,855		3,011
Owner occupied	1,605,042		12,709		3,231		4,666		69		9,478		9,750
Real estate construction:
One-to-four family residential:
Land and acquisition	4,417		—		—		—		—		—		—
Residential construction	212,396		—		—		—		—		—		—
Commercial and multifamily residential:
Income property	194,912		—		—		—		—		—		—
Owner occupied	87,063		—		—		—		—		—		—
Consumer	314,193		4,022		3,326		3,584		31		696		704
Total	$	8,252,647	$	49,104	$	13,351	$	17,693	$	2,132	$	35,753	$	40,716

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,
	2019				2018				2019				2018
	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	$	21,419	$	108	$	43,805	$	2	$	24,833	$	267	$	43,055	$	43
Unsecured	15		—		444		—		17		1		234		1
Real estate:
One-to-four family residential	596		12		545		12		736		29		713		30
Commercial and multifamily residential:
Commercial land	2,861		8		2,246		26		2,704		23		2,407		26
Income property	664		—		2,443		34		1,401		—		3,367		96
Owner occupied	10,241		176		9,349		124		12,435		210		8,986		333
Real estate construction:
One-to-four family residential:
Residential construction	—		—		—		—		—		—		605		—
Commercial and multifamily residential:
Owner occupied	—		—		4,050		72		—		—		4,050		174
Consumer	2,842		10		5,646		44		3,290		28		6,135		110
Total	$	38,638	$	314	$	68,528	$	314	$	45,416	$	558	$	69,552	$	813

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

The following is an analysis of loans classified as TDR during the three and nine months ended September 30, 2019 and 2018:

	Three Months Ended September 30, 2019					Three Months Ended September 30, 2018
	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	6	$	5,108	$	5,108	1	$	14,511	$	14,511
Consumer	5	276		276		3	123		123
Total	11	$	5,384	$	5,384	4	$	14,634	$	14,634

	Nine Months Ended September 30, 2019					Nine Months Ended September 30, 2018
	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	11	$	6,642	$	6,642	9	$	17,605	$	17,605
Commercial and multifamily residential:
Income property	1	217		217		1	891		891
Consumer	9	394		394		18	2,540		2,540
Total	21	$	7,253	$	7,253	28	$	21,036	$	21,036

Purchased Credit Impaired Loans [Member]

Financing Receivable, Credit Quality Indicator [Line Items]

Analysis of Loan Portfolio by Major Types of Loans

The following is an analysis of our PCI loans, net of related ALLL and remaining valuation discounts as of September 30, 2019 and December 31, 2018:

	September 30, 2019		December 31, 2018
	(in thousands)
Commercial business	$	9,234	$	9,672
Real estate:
One-to-four family residential	8,764		9,848
Commercial and multifamily residential	59,383		66,340
Total real estate	68,147		76,188
Real estate construction:
One-to-four family residential	144		153
Commercial and multifamily residential	462		507
Total real estate construction	606		660
Consumer	8,744		9,765
Subtotal of PCI loans	86,731		96,285
Less:
Valuation discount resulting from acquisition accounting	4,954		6,525
ALLL	3,058		3,611
PCI loans, net of valuation discounts and allowance for loan losses	$	78,719	$	86,149

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, 2019 and 2018:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2019			2018			2019			2018
	(in thousands)
Balance at beginning of period	$	20,989		$	25,350		$	21,949		$	31,176
Accretion	(1,289		)	(2,233		)	(4,865		)	(6,435		)
Disposals	(45		)	(221		)	61			(387		)
Reclassifications to (from) nonaccretable difference	719			279			3,229			(1,179		)
Balance at end of period	$	20,374		$	23,175		$	20,374		$	23,175

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Fair Value Accounting and Measurement

9 Months Ended

Sep. 30, 2019

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 and equity securities, which are considered a Level 1 input method.

Interest rate contracts and the interest rate collar 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, 2019 and December 31, 2018 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, 2019	(in thousands)
Assets
Debt securities available for sale:
U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations (1)	$	2,482,835	$	—	$	2,482,835	$	—
Other asset-backed securities (1)	171,578		—		171,578		—
State and municipal debt securities	497,314		—		497,314		—
U.S. government agency and government-sponsored enterprise securities	215,595		—		215,595		—
U.S. government securities	250		250		—		—
Total debt securities available for sale	$	3,367,572	$	250	$	3,367,322	$	—
Other assets:
Interest rate contracts	$	25,045	$	—	$	25,045	$	—
Interest rate collar	$	19,703	$	—	$	19,703	$	—
Liabilities
Other liabilities:
Interest rate contracts	$	25,046	$	—	$	25,046	$	—

	Fair Value		Fair Value Measurements at Reporting Date Using
			Level 1		Level 2		Level 3
December 31, 2018	(in thousands)
Assets
Debt securities available for sale:
U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations (1)	$	2,013,355	$	—	$	2,013,355	$	—
Other asset-backed securities (1)	174,935		—		174,935		—
State and municipal debt securities	574,323		—		574,323		—
U.S. government agency and government-sponsored enterprise securities	404,587		—		404,587		—
U.S. government securities	248		248		—		—
Total debt securities available for sale	$	3,167,448	$	248	$	3,167,200	$	—
Other assets:
Interest rate contracts	$	7,033	$	—	$	7,033	$	—
Liabilities
Other liabilities:
Interest rate contracts	$	7,033	$	—	$	7,033	$	—

__________

(1) Beginning July 2019, other asset-backed securities were presented separately in this table. Prior period amounts that were previously reported in U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations have been reclassified to conform to current period presentation.

There were no transfers between Level 1 and Level 2 of the valuation hierarchy during the nine month periods ended September 30, 2019 and 2018. 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. The following method was used to estimate the fair value of impaired loans:

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. 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 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.

OREO—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, 2019		Fair Value Measurements at Reporting Date Using						Losses During the Three Months Ended September 30, 2019		Losses During the Nine Months Ended September 30, 2019
			Level 1		Level 2		Level 3
	(in thousands)
Impaired loans	$	8,990	$	—	$	—	$	8,990	$	1,722	$	3,299
	$	8,990	$	—	$	—	$	8,990	$	1,722	$	3,299

	Fair value at September 30, 2018		Fair Value Measurements at Reporting Date Using						Losses During the Three Months Ended September 30, 2018		Losses During the Nine Months Ended September 30, 2018
			Level 1		Level 2		Level 3
	(in thousands)
Impaired loans	$	14,616	$	—	$	—	$	14,616	$	1,208	$	1,208
OREO	1,240		—		—		1,240		445		445
	$	15,856	$	—	$	—	$	15,856	$	1,653	$	1,653

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 ALLL. The losses on OREO disclosed above represent the write-downs taken at foreclosure that were charged to the ALLL, as well as subsequent changes in 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, 2019		Valuation Technique	Unobservable Input	Range (Weighted Average) (1)
	(dollars in thousands)
Impaired loans - collateral-dependent (2)	$	8,990	Fair Market Value of Collateral	Adjustment to Stated Value	0.00% - 100.00% (42.09%)

__________

(1) Discount applied to appraised value or stated value (in the case of accounts receivable, fixed assets and inventory).

(2) Collateral consists of cash, accounts receivable, fixed assets, inventory and real estate.

	Fair value at September 30, 2018		Valuation Technique	Unobservable Input	Range (Weighted Average) (1)
	(dollars in thousands)
Impaired loans - collateral-dependent (3)	$	14,616	Fair Market Value of Collateral	Adjustment to Stated Value	0.00% - 54.51% (6.66%)
OREO	$	1,240	Fair Market Value of Collateral	Adjustment to Appraisal Value	N/A (2)

__________

(1) Discount applied to appraisal value or stated value (in the case of accounts receivable, fixed assets and inventory).

(2) Quantitative disclosures are not provided for OREO because there were no adjustments made to the appraisal values.

(3) Collateral consists of accounts receivable, fixed assets, inventory, cash, real estate, and state guarantee.

The following tables summarize carrying amounts and estimated fair values of selected financial instruments by level within the fair value hierarchy at September 30, 2019 and December 31, 2018:

	September 30, 2019
	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
	(in thousands)
Assets
Cash and due from banks	$	278,461	$	278,461	$	278,461	$	—	$	—
Interest-earning deposits with banks	20,144		20,144		20,144		—		—
Debt securities available for sale	3,367,572		3,367,572		250		3,367,322		—
FHLB stock	29,680		29,680		—		29,680		—
Loans held for sale	15,036		15,036		—		15,036		—
Loans	8,673,695		8,895,564		—		—		8,895,564
Interest rate contracts	25,045		24,045		—		24,045		—
Interest rate collar	19,703		19,703		—		19,703		—
Liabilities
Time deposits	$	366,773	$	361,195	$	—	$	361,195	$	—
FHLB advances	492,482		493,736		—		493,736		—
Repurchase agreements	24,489		24,489		—		24,489		—
Subordinated debentures	35,323		35,255		—		35,255		—
Interest rate contracts	25,046		25,046		—		25,046		—

	December 31, 2018
	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
	(in thousands)
Assets
Cash and due from banks	$	260,180	$	260,180	$	260,180	$	—	$	—
Interest-earning deposits with banks	17,407		17,407		17,407		—		—
Debt securities available for sale	3,167,448		3,167,448		248		3,167,200		—
FHLB stock	25,960		25,960		—		25,960		—
Loans held for sale	3,849		3,849		—		3,849		—
Loans	8,308,142		8,316,946		—		—		8,316,946
Interest rate contracts	7,033		7,033		—		7,033		—
Liabilities
Time deposits	$	414,443	$	407,659	$	—	$	407,659	$	—
FHLB advances	399,523		400,085		—		400,085		—
Repurchase agreements	61,094		61,094		—		61,094		—
Subordinated debentures	35,462		34,897		—		34,897		—
Interest rate contracts	7,033		7,033		—		7,033		—

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Derivatives and Balance Sheet Offsetting (Tables)

9 Months Ended

Sep. 30, 2019

Derivative [Line Items]

Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The table below presents the effect of cash flow hedge accounting on accumulated other comprehensive income (loss) at September 30, 2019 and 2018:

	Amount of Gain or (Loss) Recognized in Accumulated Other Comprehensive Income on Derivative				Location of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income	Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income
	Three Months Ended September 30,					Three Months Ended September 30,
	2019		2018			2019		2018
	(in thousands)
Interest rate collar	$	4,088	$	—	Interest income	$	76	$	—
	Nine Months Ended September 30,					Nine Months Ended September 30,
	2019		2018			2019		2018
Interest rate collar	$	19,779	$	—	Interest income	$	76	$	—

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

The following table presents the fair value of derivatives, as well as their classification on the Balance Sheet at September 30, 2019 and December 31, 2018:

Asset Derivatives

Liability Derivatives

September 30, 2019

December 31, 2018

September 30, 2019

December 31, 2018

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

(in thousands)

Derivatives designated as hedging instruments:

Interest rate collar

Other assets

$

19,703

Other assets

$

—

Other liabilities

$

—

Other liabilities

$

—

Derivatives not designated as hedging instruments:

Interest rate swap contracts

Other assets

$

25,045

Other assets

$

7,033

Other liabilities

$

25,046

Other liabilities

$

7,033

Balance Sheet Offsetting [Table Text Block]

The following tables show the gross interest rate swap contracts, collar agreements and repurchase agreements in the Consolidated Balance Sheets and the respective collateral received or pledged in the form of cash or other financial instruments. 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 Pledged/Received			Net Amount
September 30, 2019	(in thousands)
Assets
Interest rate swap contracts	$	25,045	$	—	$	25,045	$	—		$	25,045
Interest rate collar	$	19,703	$	—	$	19,703	$	(19,703	)	—
Liabilities
Interest rate swap contracts	$	25,046	$	—	$	25,046	$	(25,046	)	$	—
Repurchase agreements	$	24,489	$	—	$	24,489	$	(24,489	)	$	—
December 31, 2018
Assets
Interest rate swap contracts	$	7,033	$	—	$	7,033	$	—		$	7,033
Liabilities
Interest rate swap contracts	$	7,033	$	—	$	7,033	$	(3,235	)	$	3,798
Repurchase agreements	$	61,094	$	—	$	61,094	$	(61,094	)	$	—

Carrying Value of Securities Pledged As Collateral

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

	September 30, 2019
	(in thousands)
To secure public funds	$	443,320
To secure borrowings	111,421
Other securities pledged	155,727
Total securities pledged as collateral	$	710,468

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, 2019	(in thousands)
Class of collateral pledged for repurchase agreements
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	24,489	$	—	$	—	$	—	$	24,489
Gross amount of recognized liabilities for repurchase agreements									24,489
Amounts related to agreements not included in offsetting disclosure									$	—

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Earnings per Common Share (Tables)

9 Months Ended

Sep. 30, 2019

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Earnings Per Share

The following table sets forth the computation of basic and diluted EPS for the three and nine months ended September 30, 2019 and 2018:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2019		2018		2019		2018
	(in thousands except per share amounts)
Basic EPS:
Net income	$	50,727	$	46,415	$	148,322	$	128,134
Less: Earnings allocated to participating securities:
Nonvested restricted shares	358		504		1,204		1,413
Earnings allocated to common shareholders	$	50,369	$	45,911	$	147,118	$	126,721
Weighted average common shares outstanding	71,803		72,427		72,256		72,370
Basic earnings per common share	$	0.70	$	0.63	$	2.04	$	1.75
Diluted EPS:
Earnings allocated to common shareholders	$	50,369	$	45,911	$	147,118	$	126,721
Weighted average common shares outstanding	71,803		72,427		72,256		72,370
Dilutive effect of equity awards	—		5		1		4
Weighted average diluted common shares outstanding	71,803		72,432		72,257		72,374
Diluted earnings per common share	$	0.70	$	0.63	$	2.04	$	1.75
Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive	—		—		—		5

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Other Real Estate Owned

9 Months Ended

Sep. 30, 2019

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

Other Real Estate Owned

Other Real Estate Owned

The following tables set forth activity in OREO for the three and nine months ended September 30, 2019 and 2018:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2019			2018			2019			2018
	(in thousands)
Balance, beginning of period	$	1,118		$	7,080		$	6,019		$	13,298
Transfers in	—			794			386			1,200
Valuation adjustments	—			(495		)	(195		)	(697		)
Proceeds from sale of OREO property	(588		)	(47		)	(6,382		)	(5,868		)
Gain (loss) on sale of OREO, net	95			(1		)	797			(602		)
Balance, end of period	$	625		$	7,331		$	625		$	7,331

At September 30, 2019, there were $311 thousand in foreclosed residential real estate properties held as OREO. The recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process was $1.3 million.

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Accounting Pronouncements Recently Issued

9 Months Ended

Sep. 30, 2019

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

New Accounting Pronouncements and Changes in Accounting Principles adopted

Accounting Standards Adopted in 2019

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. The new lease model differs from the old lease accounting model, as the old model 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. The FASB subsequently issued ASU 2018-11, which allows for an additional (optional) transition method. The Company adopted the new standard effective January 1, 2019 utilizing the transition method allowed under ASU 2018-11 and did not restate comparative periods. The Company elected the package of practical expedients permitted under the transition guidance, which allowed us to carryforward our historical lease classifications and our assessment on whether a contract is or contains a lease. We also elected to keep leases with an initial term of 12 months or less off the balance sheet. The adoption of the new standard resulted in an increase in other assets and an increase in other liabilities of $49.2 million and $48.2 million, respectively. The Company recognized a cumulative effect adjustment of $782 thousand to increase the beginning balance of retained earnings related to previous deferred gains on sale-leaseback transactions.

In August 2018, the FASB issued ASU 2018-15, Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That is a Service Contract. The amendments in this ASU align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the ASC 350 requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The amendments also require the entity to expense the capitalized implementation costs of a hosting arrangement that is a service contract over the term of the hosting arrangement, including reasonably certain renewal periods. The amendments in ASU 2018-15 are effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption is permitted, including adoption in any interim period. The amendments can be adopted on a prospective or retrospective basis. The Company adopted the new standard effective July 1, 2019 on a prospective basis. The adoption of the new standard resulted in an increase in other assets of $920 thousand.

Accounting Pronouncements Recently Issued not yet adopted

Recently Issued Accounting Standards, Not Yet Adopted

In April 2019, the FASB issued ASU 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments. The amendments in this ASU clarify certain aspects of accounting for credit losses, hedging activities, and financial instruments (addressed by ASUs 2016-01, 2016-13, and 2017-12). Many of the amendments reflect decisions reached at FASB meetings or meetings of the Board’s credit losses transition resource group. Topics covered in this ASU include: accrued interest, transfers between classifications or categories for loans and debt securities, recoveries, reinsurance recoverables, projections of interest rate environments for variable-rate financial instruments, costs to sell when foreclosure is probable, consideration of expected prepayments when determining the effective interest rate, vintage disclosures, extension and renewal options, etc. The amendments in ASU 2019-04 are effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption is permitted, including adoption in any interim period. The Company is assessing the impact that this guidance will have on its Consolidated Financial Statements.

In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments. The amendments included in this ASU require an entity to reflect its current estimate of all expected credit losses for assets held at an amortized cost basis. For available for sale debt securities, credit losses 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.

Unlike the incurred loss models in existing GAAP, the 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 change significantly from the impairment allowance measured under the Company’s existing incurred loss model. The Company has engaged a third-party vendor to assist in the CECL calculation and has developed an internal governance framework to oversee the CECL implementation. Significant CECL implementation matters that have been completed include identifying, sourcing and storing data, addressing data gaps, defining a reasonable and supportable forecast period and selecting historical loss information. Other significant CECL implementation matters being addressed by the Company include selecting loss estimation methodologies, assessing the impact to internal controls over financial reporting, and capital planning.

Upon adoption of the standard on January 1, 2020, the Company expects that, based on current expectations of future economic conditions, its impact on the allowance for credit losses will range from a decrease of 10% to an increase of 5%, with no material impact on capital levels anticipated. The ultimate impact will depend on the characteristics of the Company’s portfolios as well as the macroeconomic conditions and forecasts upon adoption, the ultimate validation of models and methodologies, and other management judgments.

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Derivatives and Balance Sheet Offsetting

9 Months Ended

Sep. 30, 2019

General Discussion of Derivative Instruments and Hedging Activities [Abstract]

Derivatives and Hedging Activities

Derivatives, Hedging Activities and Balance Sheet Offsetting

The Company is exposed to certain risks arising from both its business and economic conditions. The Company principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Company manages economic risks, including interest rate, liquidity, and credit risk, primarily by managing the amount, sources, and duration of its assets and liabilities and the use of derivative financial instruments. Specifically, the Company enters into interest rate-based derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts. The Company’s derivative financial instruments are used to manage differences in the amount, timing, and duration of the Company’s known or expected cash receipts and its known or expected cash payments principally related to the Company’s loan portfolio.

The Company’s objectives in using interest rate derivatives are to add stability to interest income and to manage its exposure to interest rate movements. To accomplish this objective, the Company uses interest rate collars as part of its interest rate risk management strategy. Interest rate collars designated as cash flow hedges involve the payments of variable-rate amounts if interest rates rise above the cap strike rate on the contract and receipts of variable-rate amounts if interest rates fall below the floor strike rate on the contract. These derivative contracts are used to hedge the variable cash flows associated with existing variable-rate assets.

With respect to derivatives designated and that qualify as cash flow hedges of interest rate risk, the gain or loss on the derivative is recorded in accumulated other comprehensive income (loss) and subsequently reclassified into interest income in the same period(s) during which the hedged transaction affects earnings. Amounts reported in accumulated other comprehensive income (loss) related to derivatives will be reclassified to interest income as interest payments are received on the Company’s variable-rate assets. During the next 12 months, the Company estimates that there will be $3.1 million reclassified as an increase to interest income.

In addition, 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, 2019 and December 31, 2018 was $396.5 million and $366.7 million, respectively. There was no mark-to-market gain or loss recorded in the three months ended September 30, 2019. During the nine months ended September 30, 2019 there was a $2 thousand mark-to-market loss recorded to “Other” noninterest expense. During the three and nine months ended September 30, 2018, mark-to-market gains of $1 thousand and $9 thousand, respectively, were recorded to “Other” noninterest expense.

The following table presents the fair value of derivatives, as well as their classification on the Balance Sheet at September 30, 2019 and December 31, 2018:

Asset Derivatives

Liability Derivatives

September 30, 2019

December 31, 2018

September 30, 2019

December 31, 2018

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

(in thousands)

Derivatives designated as hedging instruments:

Interest rate collar

Other assets

$

19,703

Other assets

$

—

Other liabilities

$

—

Other liabilities

$

—

Derivatives not designated as hedging instruments:

Interest rate swap contracts

Other assets

$

25,045

Other assets

$

7,033

Other liabilities

$

25,046

Other liabilities

$

7,033

The table below presents the effect of cash flow hedge accounting on accumulated other comprehensive income (loss) at September 30, 2019 and 2018:

	Amount of Gain or (Loss) Recognized in Accumulated Other Comprehensive Income on Derivative				Location of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income	Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income
	Three Months Ended September 30,					Three Months Ended September 30,
	2019		2018			2019		2018
	(in thousands)
Interest rate collar	$	4,088	$	—	Interest income	$	76	$	—
	Nine Months Ended September 30,					Nine Months Ended September 30,
	2019		2018			2019		2018
Interest rate collar	$	19,779	$	—	Interest income	$	76	$	—

The notional amount of the interest rate collar was $500.0 million at September 30, 2019. The cash flow hedge was determined to be effective during the periods presented and, as a result, qualifies for hedge accounting treatment.

The Company is party to interest rate swap contracts, interest rate collar 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 contracts, collar agreements and repurchase agreements in the Consolidated Balance Sheets and the respective collateral received or pledged in the form of cash or other financial instruments. 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 Pledged/Received			Net Amount
September 30, 2019	(in thousands)
Assets
Interest rate swap contracts	$	25,045	$	—	$	25,045	$	—		$	25,045
Interest rate collar	$	19,703	$	—	$	19,703	$	(19,703	)	—
Liabilities
Interest rate swap contracts	$	25,046	$	—	$	25,046	$	(25,046	)	$	—
Repurchase agreements	$	24,489	$	—	$	24,489	$	(24,489	)	$	—
December 31, 2018
Assets
Interest rate swap contracts	$	7,033	$	—	$	7,033	$	—		$	7,033
Liabilities
Interest rate swap contracts	$	7,033	$	—	$	7,033	$	(3,235	)	$	3,798
Repurchase agreements	$	61,094	$	—	$	61,094	$	(61,094	)	$	—

The Company’s agreements with each of its derivative counterparties provide that if the Company defaults or is capable of being declared in default on any of its indebtedness, then the Company could also be declared in default on its derivative obligations.

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, 2019	(in thousands)
Class of collateral pledged for repurchase agreements
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	24,489	$	—	$	—	$	—	$	24,489
Gross amount of recognized liabilities for repurchase agreements									24,489
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 $24.5 million 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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Fair Value Accounting and Measurement (Financial Assets And Liabilities Accounted for Fair Value On Recurring Basis) (Details) - USD ($)		Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Level 1 to level 2 Transfers, Amount		$ 0		$ 0
Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		3,367,572,000	$ 3,167,448,000
Other assets (Interest rate contracts)		25,045,000	7,033,000
Interest Rate Cash Flow Hedge Asset at Fair Value		19,703,000
Other liabilities (Interest rate contracts)		25,046,000	7,033,000
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		250,000	248,000
Other assets (Interest rate contracts)		0	0
Interest Rate Cash Flow Hedge Asset at Fair Value		0
Other liabilities (Interest rate contracts)		0	0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		3,367,322,000	3,167,200,000
Other assets (Interest rate contracts)		25,045,000	7,033,000
Interest Rate Cash Flow Hedge Asset at Fair Value		19,703,000
Other liabilities (Interest rate contracts)		25,046,000	7,033,000
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		0	0
Other assets (Interest rate contracts)		0	0
Interest Rate Cash Flow Hedge Asset at Fair Value		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, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	[1]	2,482,835,000	2,013,355,000
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	[1]	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, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	[1]	2,482,835,000	2,013,355,000
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	[1]	0	0
Asset-backed Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	[1]	171,578,000	174,935,000
Asset-backed Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	[1]	0	0
Asset-backed Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	[1]	171,578,000	174,935,000
Asset-backed Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	[1]	0	0
State and Municipal Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		497,314,000	574,323,000
State and Municipal Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		0	0
State and Municipal Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		497,314,000	574,323,000
State and Municipal Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		0	0
U.S. Government Agency [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		215,595,000	404,587,000
U.S. Government Agency [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		0	0
U.S. Government Agency [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		215,595,000	404,587,000
U.S. Government Agency [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		0	0
US Government Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		250,000	248,000
US Government Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		250,000	248,000
US Government Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		0	0
US Government Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		$ 0	$ 0

[1] Beginning July 2019, other asset-backed securities were presented separately in this table. Prior period amounts that were previously reported in U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations have been reclassified to conform to current period presentation.

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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, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net Income	$ 50,727	$ 46,415	$ 148,322	$ 128,134
Earnings allocated to participating securities - nonvested restricted shares	358	504	1,204	1,413
Earnings allocated to common shareholders, Basic	$ 50,369	$ 45,911	$ 147,118	$ 126,721
Weighted average common shares outstanding	71,803	72,427	72,256	72,370
Basic earnings per common share	$ 0.70	$ 0.63	$ 2.04	$ 1.75
Earnings allocated to common shareholders, Diluted	$ 50,369	$ 45,911	$ 147,118	$ 126,721
Dilutive effect of equity awards and warrants	0	5	1	4
Weighted average diluted common shares outstanding	71,803	72,432	72,257	72,374
Diluted earnings per common share	$ 0.70	$ 0.63	$ 2.04	$ 1.75
Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive.	0	0	0	5

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Goodwill and Intangible Assets (Schedule of Goodwill and Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2017
Goodwill and Intangible Assets [Roll Forward]
Total goodwill, beginning of period			$ 765,842
Total goodwill, end of period	$ 765,842	$ 765,842	765,842	$ 765,842
CDI current period amortization	(2,632)	(3,070)	(8,029)	(9,346)
Indefinite-lived Intangible Assets (Excluding Goodwill)	919	919	919	919
Other intangible assets, net	37,908	48,827	37,908	48,827		$ 45,937
Total goodwill and intangible assets, end of period	803,750	814,669	$ 803,750	814,669
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					$ 105,473	105,473	$ 105,473	$ 105,473
Accumulated amortization at beginning of period					$ (65,852)	$ (60,455)	$ (54,495)	$ (48,219)
Core deposit intangible, net, beginning of period	39,621	50,978	$ 45,018	57,254
CDI current period amortization	(2,632)	(3,070)	(8,029)	(9,346)
Total core deposit intangible, end of period	$ 36,989	$ 47,908	$ 36,989	$ 47,908

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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, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 80,517	$ 80,150	$ 83,369	$ 75,646
Charged-offs	(3,372)	(2,091)	(11,647)	(13,640)
Recoveries	5,216	2,575	9,059	8,801
Provision for loan and lease losses	299	3,153	1,879	12,980
Ending balance	82,660	83,787	82,660	83,787
Specific Reserve	2,326	1,255	2,326	1,255
General Allocation	80,334	82,532	80,334	82,532
Secured Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	37,862	40,350	43,188	29,341
Charged-offs	(2,365)	(576)	(7,717)	(8,741)
Recoveries	202	496	1,040	2,536
Provision for loan and lease losses	5,721	2,912	4,909	20,046
Ending balance	41,420	43,182	41,420	43,182
Specific Reserve	1,879	1,139	1,879	1,139
General Allocation	39,541	42,043	39,541	42,043
Unsecured Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	3,010	2,443	2,626	2,000
Charged-offs	0	(30)	(15)	(117)
Recoveries	156	51	345	356
Provision for loan and lease losses	423	(41)	633	184
Ending balance	3,589	2,423	3,589	2,423
Specific Reserve	0	0	0	0
General Allocation	3,589	2,423	3,589	2,423
One-to-Four Family Residential [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	645	461	593	701
Charged-offs	0	0	(2)	0
Recoveries	65	21	102	389
Provision for loan and lease losses	(107)	(110)	(90)	(718)
Ending balance	603	372	603	372
Specific Reserve	5	8	5	8
General Allocation	598	364	598	364
Commercial Land [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5,409	3,278	3,947	4,265
Charged-offs	0	0	0	0
Recoveries	79	8	93	92
Provision for loan and lease losses	560	(87)	2,008	(1,158)
Ending balance	6,048	3,199	6,048	3,199
Specific Reserve	320	0	320	0
General Allocation	5,728	3,199	5,728	3,199
Income Property Multifamily [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5,325	4,102	4,044	5,672
Charged-offs	0	0	0	(223)
Recoveries	104	202	152	901
Provision for loan and lease losses	35	(292)	1,268	(2,338)
Ending balance	5,464	4,012	5,464	4,012
Specific Reserve	0	1	0	1
General Allocation	5,464	4,011	5,464	4,011
Owner Occupied [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5,230	4,356	4,533	5,459
Charged-offs	0	0	0	0
Recoveries	1	3	3	19
Provision for loan and lease losses	500	316	1,195	(803)
Ending balance	5,731	4,675	5,731	4,675
Specific Reserve	105	71	105	71
General Allocation	5,626	4,604	5,626	4,604
Land And Acquisition [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	153	848	549	963
Charged-offs	0	0	0	0
Recoveries	105	582	236	610
Provision for loan and lease losses	(124)	(742)	(651)	(885)
Ending balance	134	688	134	688
Specific Reserve	0	0	0	0
General Allocation	134	688	134	688
Residential Construction [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	6,103	4,572	5,536	3,709
Charged-offs	0	0	(170)	0
Recoveries	2,366	1	2,956	6
Provision for loan and lease losses	(2,852)	660	(2,705)	1,518
Ending balance	5,617	5,233	5,617	5,233
Specific Reserve	0	0	0	0
General Allocation	5,617	5,233	5,617	5,233
Income Property Multifamily Construction [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	4,198	7,367	5,784	7,053
Charged-offs	0	0	0	0
Recoveries	0	0	1	0
Provision for loan and lease losses	(505)	573	(2,092)	887
Ending balance	3,693	7,940	3,693	7,940
Specific Reserve	0	0	0	0
General Allocation	3,693	7,940	3,693	7,940
Owner Occupied Construction [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	2,412	2,299	2,604	4,413
Charged-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for loan and lease losses	595	138	403	(1,976)
Ending balance	3,007	2,437	3,007	2,437
Specific Reserve	0	0	0	0
General Allocation	3,007	2,437	3,007	2,437
Consumer Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5,194	5,292	5,301	5,163
Charged-offs	(285)	(277)	(1,117)	(773)
Recoveries	326	266	742	796
Provision for loan and lease losses	(1,010)	(258)	(701)	(163)
Ending balance	4,225	5,023	4,225	5,023
Specific Reserve	17	36	17	36
General Allocation	4,208	4,987	4,208	4,987
Purchased Credit Impaired Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	3,269	4,782	3,611	6,907
Charged-offs	(722)	(1,208)	(2,626)	(3,786)
Recoveries	1,812	945	3,389	3,096
Provision for loan and lease losses	(1,301)	(502)	(1,316)	(2,200)
Ending balance	3,058	4,017	3,058	4,017
Specific Reserve	0	0	0	0
General Allocation	3,058	4,017	3,058	4,017
Unallocated Financing Receivables [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,707	0	1,053	0
Charged-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for loan and lease losses	(1,636)	586	(982)	586
Ending balance	71	586	71	586
Specific Reserve	0	0	0	0
General Allocation	$ 71	$ 586	$ 71	$ 586

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Securities (Securities Available for Sale) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Proceeds from Sale of Debt Securities, Available-for-sale		$ 0	$ 0	$ 259,554	$ 32,330
Debt securities available-for-sale, amortized cost		3,300,143		3,300,143		$ 3,210,615
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax		79,026		79,026		12,799
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax		(11,597)		(11,597)		(55,966)
Debt securities available for sale at fair value		3,367,572		3,367,572		3,167,448
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Debt securities available-for-sale, amortized cost	[1]	2,432,873		2,432,873		2,045,728
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	[1]	61,024		61,024		8,473
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	[1]	(11,062)		(11,062)		(40,846)
Debt securities available for sale at fair value	[1]	2,482,835		2,482,835		2,013,355
Asset-backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt securities available-for-sale, amortized cost	[1]	166,482		166,482		176,793
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	[1]	5,149		5,149		763
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	[1]	(53)		(53)		(2,621)
Debt securities available for sale at fair value	[1]	171,578		171,578		174,935
State and Municipal Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt securities available-for-sale, amortized cost		488,273		488,273		579,755
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax		9,471		9,471		2,328
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax		(430)		(430)		(7,760)
Debt securities available for sale at fair value		497,314		497,314		574,323
U.S. Government and Government-Sponsored Enterprise Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt securities available-for-sale, amortized cost		212,265		212,265		408,088
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax		3,382		3,382		1,235
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax		(52)		(52)		(4,736)
Debt securities available for sale at fair value		215,595		215,595		404,587
US Government Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt securities available-for-sale, amortized cost		250		250		251
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax		0		0		0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax		0		0		(3)
Debt securities available for sale at fair value		$ 250		$ 250		$ 248

[1] Beginning July 2019, other asset-backed securities were presented separately in this table. Prior period amounts that were previously reported in U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations have been reclassified to conform to current period presentation.

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Securities (Narrative) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($) security	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) security	Sep. 30, 2018 USD ($)
Debt Securities, Available-for-sale [Line Items]
Proceeds from Sale of Debt Securities, Available-for-sale | $	$ 0	$ 0	$ 259,554	$ 32,330
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	170		170
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	211		211
Asset-backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	6		6
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	6		6
Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	27		27
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	81		81
U.S. Government and Government-Sponsored Enterprise Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	7		7
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	7		7
US Government Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	1		1
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	1		1

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Loans (Analysis of the Aged Loan Portfolio) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	$ 37,021	$ 54,842
Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	8,612,450	8,218,651
Past Due Loans	25,107	28,258
Nonaccrual Loans	37,021	54,842
Total Loans	8,674,578	8,301,751
Secured Loans [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	24,408	35,504
Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	3,525,753	3,267,709
Past Due Loans	5,822	9,488
Nonaccrual Loans	24,408	35,504
Total Loans	3,555,983	3,312,701
Unsecured Loans [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	0	9
Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	138,947	111,868
Past Due Loans	426	240
Nonaccrual Loans	0	9
Total Loans	139,373	112,117
One-to-Four Family Residential [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	574	1,158
One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	269,593	233,941
Past Due Loans	2,866	927
Nonaccrual Loans	574	1,158
Total Loans	273,033	236,026
Commercial Land [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	2,562	2,261
Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	292,594	283,416
Past Due Loans	140	0
Nonaccrual Loans	2,562	2,261
Total Loans	295,296	285,677
Income Property Multifamily [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	997	2,721
Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	1,955,634	1,910,505
Past Due Loans	5,304	7,250
Nonaccrual Loans	997	2,721
Total Loans	1,961,935	1,920,476
Owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	6,524	9,922
Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	1,689,919	1,606,085
Past Due Loans	1,865	1,744
Nonaccrual Loans	6,524	9,922
Total Loans	1,698,308	1,617,751
Land And Acquisition [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	0	318
Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	1,614	4,099
Past Due Loans	0	0
Nonaccrual Loans	0	318
Total Loans	1,614	4,417
Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	192,563	212,303
Past Due Loans	0	93
Nonaccrual Loans	0	0
Total Loans	192,563	212,396
Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	151,362	194,912
Past Due Loans	6,038	0
Nonaccrual Loans	0	0
Total Loans	157,400	194,912
Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	100,610	79,805
Past Due Loans	1,636	7,258
Nonaccrual Loans	0	0
Total Loans	102,246	87,063
Consumer Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans	1,956	2,949
Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	293,861	314,008
Past Due Loans	1,010	1,258
Nonaccrual Loans	1,956	2,949
Total Loans	296,827	318,215
Financial Asset, 60 to 89 Days Past Due [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	4,369	6,299
Financial Asset, 60 to 89 Days Past Due [Member] | Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	262	3,624
Financial Asset, 60 to 89 Days Past Due [Member] | Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	2	0
Financial Asset, 60 to 89 Days Past Due [Member] | One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	437	233
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	3,266	2,241
Financial Asset, 60 to 89 Days Past Due [Member] | Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	138	0
Financial Asset, 60 to 89 Days Past Due [Member] | Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	264	201
Financial Asset, 30 to 59 Days Past Due [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	20,738	21,959
Financial Asset, 30 to 59 Days Past Due [Member] | Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	5,560	5,864
Financial Asset, 30 to 59 Days Past Due [Member] | Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	424	240
Financial Asset, 30 to 59 Days Past Due [Member] | One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	2,429	694
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	140	0
Financial Asset, 30 to 59 Days Past Due [Member] | Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	2,038	5,009
Financial Asset, 30 to 59 Days Past Due [Member] | Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	1,727	1,744
Financial Asset, 30 to 59 Days Past Due [Member] | Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	0	0
Financial Asset, 30 to 59 Days Past Due [Member] | Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	0	93
Financial Asset, 30 to 59 Days Past Due [Member] | Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	6,038	0
Financial Asset, 30 to 59 Days Past Due [Member] | Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	1,636	7,258
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	746	1,057
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Secured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Unsecured Loans [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | One-to-Four Family Residential [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Land [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Income Property Multifamily [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Owner Occupied [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Land And Acquisition [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Residential Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Income Property Multifamily Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Owner Occupied Construction [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due Loans	$ 0	$ 0

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Shareholders' Equity Share repurchase (Details) - $ / shares shares in Thousands					3 Months Ended	9 Months Ended
	Oct. 24, 2019	Jul. 25, 2019	Apr. 25, 2019	Jan. 24, 2019	Sep. 30, 2019	Sep. 30, 2019
Class of Stock [Line Items]
Common Stock, Dividends, Per Share, Declared		$ 0.28	$ 0.28	$ 0.28
Treasury Stock, Shares, Acquired					676	1,300
Treasury Stock Acquired, Average Cost Per Share					$ 34.77	$ 34.89
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased					1,600	1,600
Subsequent Event [Member]
Class of Stock [Line Items]
Common Stock, Dividends, Per Share, Declared	$ 0.28

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Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Common Stock, Dividends, Per Share, Cash Paid	$ 0.28	$ 0.26	$ 1.12	$ 0.74

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Derivatives and Balance Sheet Offsetting (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Derivative [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax	$ 0
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement	24,489,000		$ 24,489,000
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	24,489,000		24,489,000
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	24,489,000		24,489,000
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	0		0
Not Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member]
Derivative [Line Items]
Derivative, Notional Amount	396,500,000		396,500,000		$ 366,700,000
Gain (Loss) on Derivative Instruments, Net, Pretax		$ 1,000	(2,000)	$ 9,000
Not Designated as Hedging Instrument [Member] | Other Assets [Member] | Interest Rate Contracts [Member]
Derivative [Line Items]
Fair value of asset derivative instruments	25,045,000		25,045,000		7,033,000
Not Designated as Hedging Instrument [Member] | Other Liabilities [Member] | Interest Rate Contracts [Member]
Derivative [Line Items]
Fair value of liability derivative instruments	25,046,000		25,046,000		7,033,000
Designated as Hedging Instrument [Member] | Interest rate collar [Domain]
Derivative [Line Items]
Derivative, Notional Amount	500,000,000.0		500,000,000.0
Designated as Hedging Instrument [Member] | Other Assets [Member] | Interest rate collar [Domain]
Derivative [Line Items]
Fair value of asset derivative instruments	19,703,000		19,703,000		0
Designated as Hedging Instrument [Member] | Other Liabilities [Member] | Interest rate collar [Domain]
Derivative [Line Items]
Fair value of liability derivative instruments	$ 0		$ 0		$ 0

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Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Interest Income
Loans		$ 112,656	$ 109,748	$ 337,657	$ 318,187
Taxable securities		16,457	14,654	49,790	39,285
Tax-exempt securities		2,556	3,069	8,237	9,196
Deposits in banks		864	104	1,159	600
Total interest income		132,533	127,575	396,843	367,268
Interest Expense
Deposits		6,863	3,193	16,337	8,274
FHLB advances		2,569	966	9,962	2,351
Subordinated debentures		468	468	1,404	1,404
Other borrowings		183	152	552	288
Total interest expense		10,083	4,779	28,255	12,317
Net Interest Income		122,450	122,796	368,588	354,951
Provision for loan and lease losses		299	3,153	1,879	12,980
Net interest income after provision for loan and lease losses		122,151	119,643	366,709	341,971
Noninterest Income
Deposit account and treasury management fees		9,015	9,266	27,030	26,689
Card revenue		4,006	3,714	11,431	16,143
Financial services and trust revenue		3,226	2,975	9,608	8,924
Loan revenue		3,855	3,282	9,840	9,522
Bank owned life insurance		1,528	1,402	4,644	4,540
Investment securities gains (losses), net		0	(62)	2,132	(73)
Other		6,400	442	10,689	2,109
Total noninterest income		28,030	21,019	75,374	67,854
Noninterest Expense
Compensation and employee benefits		54,459	49,419	158,559	148,938
Occupancy		8,645	8,321	26,166	27,718
Data processing		5,102	4,466	14,372	14,957
Legal and professional fees		5,683	4,695	16,810	12,103
Amortization of intangibles		2,632	3,070	8,029	9,346
B&O taxes (1)	[1]	1,325	1,478	4,612	4,254
Advertising and promotion		1,752	1,472	3,596	4,523
Regulatory premiums		(38)	904	1,902	2,778
Net cost (benefit) of operation of OREO		(90)	485	(682)	1,244
Other (1)	[1]	7,606	8,531	25,140	27,610
Total noninterest expense		87,076	82,841	258,504	253,471
Income before income taxes		63,105	57,821	183,579	156,354
Income tax provision		12,378	11,406	35,257	28,220
Net Income		$ 50,727	$ 46,415	$ 148,322	$ 128,134
Earnings per common share
Basic		$ 0.70	$ 0.63	$ 2.04	$ 1.75
Diluted		$ 0.70	$ 0.63	$ 2.04	$ 1.75
Weighted average number of common shares outstanding		71,803	72,427	72,256	72,370
Weighted average number of diluted common shares outstanding		71,803	72,432	72,257	72,374

[1] Beginning the first quarter of 2019, B&O taxes are reported separately from other taxes, licenses and fees, which are now reported under “other noninterest expense.” Prior periods have been reclassified to conform to current period presentation.

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Other Real Estate Owned (Tables)

9 Months Ended

Sep. 30, 2019

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, 2019 and 2018:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2019			2018			2019			2018
	(in thousands)
Balance, beginning of period	$	1,118		$	7,080		$	6,019		$	13,298
Transfers in	—			794			386			1,200
Valuation adjustments	—			(495		)	(195		)	(697		)
Proceeds from sale of OREO property	(588		)	(47		)	(6,382		)	(5,868		)
Gain (loss) on sale of OREO, net	95			(1		)	797			(602		)
Balance, end of period	$	625		$	7,331		$	625		$	7,331

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Revenue from Contracts with Customers

9 Months Ended

Sep. 30, 2019

Revenue from Contract with Customer [Abstract]

Revenue from Contract with Customer [Text Block]

Revenue from Contracts with Customers

Revenue in the scope of Topic 606, Revenue from Contracts with Customers is measured based on the consideration specified in the contract with a customer and excludes amounts collected on behalf of third parties. The vast majority of the Company’s revenue is specifically outside the scope of Topic 606. For in-scope revenue, the following is a description of principal activities, separated by the timing of revenue recognition from which the Company generates its revenue from contracts with customers.

a. Revenue earned at a point in time - Examples of revenue earned at a point in time are ATM transaction fees, wire transfer fees, overdraft fees, interchange fees and foreign exchange transaction fees. Revenue is primarily based on the number and type of transactions and is generally derived from transactional information accumulated by our systems and is recognized immediately as the transactions occur or upon providing the service to complete the customer’s transaction. The Company is the principal in each of these contracts, with the exception of interchange fees, in which case we are acting as the agent and record revenue net of expenses paid to the principal.

b. Revenue earned over time - The Company earns revenue from contracts with customers in a variety of ways where the revenue is earned over a period of time - generally monthly. Examples of this type of revenue are deposit account maintenance fees, investment advisory fees, merchant revenue and safe deposit box fees. Revenue is generally derived from transactional information accumulated by our systems or those of third-parties and is recognized as the related transactions occur or services are rendered to the customer.

The Company recognizes revenue from contracts with customers when it satisfies its performance obligations. The Company’s performance obligations are typically satisfied as services are rendered and our contracts generally do not include multiple performance obligations. As a result, there are no contract balances as payments and services are rendered simultaneously. Payment is generally collected at the time services are rendered, monthly or quarterly. Unsatisfied performance obligations at the report date are not material to our consolidated financial statements.

In certain cases, other parties are involved with providing products and services to our customers. If the Company is principal in the transaction (providing goods or services itself), revenues are reported based on the gross consideration received from the customer and any related expenses are reported gross in noninterest expense. If the Company is an agent in the transaction (arranging for another party to provide goods or services), the Company reports its net fee or commission retained as revenue.

Rebates, waivers and reversals are recorded as a reduction of the transaction price either when the revenue is recognized by the Company or at the time the rebate, waiver or reversal is earned by the customer.

Practical expedients

The Company applies the practical expedient in paragraph 606-10-32-18 and does not adjust the consideration from customers for the effects of a significant financing component if at contract inception the period between when the entity transfers the goods or services and when the customer pays for that good or service will be one year or less.

The Company pays sales commissions to its employees in accordance with certain incentive plans and in connection with obtaining certain contracts with customers. The Company applies the practical expedient in paragraph 340-40-25-4 and expenses such sales commissions when incurred if the amortization period of the asset the Company otherwise would have recognized is one year or less. Sales commissions are included in compensation and employee benefits expense.

For the Company’s contracts that have an original expected duration of one year or less, the Company uses the practical expedient in paragraph 606-10-50-14 and has not disclosed the amount of the transaction price allocated to unsatisfied performance obligations as of the end of each reporting period or when the Company expects to recognize this revenue.

Disaggregation of revenue

The following table shows the disaggregation of revenue from contracts with customers for the three and nine month periods ended September 30, 2019 and 2018:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2019		2018		2019		2018
	(in thousands)
Noninterest income:
Revenue from contracts with customers:
Deposit account and treasury management fees	$	9,015	$	9,266	$	27,030	$	26,689
Card revenue	4,006		3,714		11,431		16,143
Financial services and trust revenue	3,226		2,975		9,608		8,924
Total revenue from contracts with customers	16,247		15,955		48,069		51,756
Other sources of noninterest income	11,783		5,064		27,305		16,098
Total noninterest income	$	28,030	$	21,019	$	75,374	$	67,854

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Shareholders' Equity

9 Months Ended

Sep. 30, 2019

Stockholders' Equity Note [Abstract]

Shareholders' Equity

Shareholders’ Equity

Dividends:

The following table summarizes year-to-date dividend activity as of September 30, 2019:

Declared	Regular Cash Dividends Per Common Share		Special Cash Dividends Per Common Share		Record Date	Paid Date
January 24, 2019	$	0.28	$	0.14	February 6, 2019	February 20, 2019
April 25, 2019	$	0.28	$	0.14	May 8, 2019	May 22, 2019
July 25, 2019	$	0.28	$	—	August 7, 2019	August 21, 2019

Subsequent to quarter end, on October 24, 2019, the Company declared a regular quarterly cash dividend of $0.28 per common share payable on November 20, 2019 to shareholders of record at the close of business on November 6, 2019.

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.

Share Repurchase Program:

For the three and nine months ended September 30, 2019, the Company repurchased 676 thousand and 1.3 million shares of common stock at an average price of $34.77 and $34.89 per share, respectively. As of September 30, 2019, there are 1.6 million remaining shares authorized to be repurchased under the current Board approved share repurchase program.

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Leases

9 Months Ended

Sep. 30, 2019

Leases [Abstract]

Lessee, Operating Leases [Text Block]

Leases

The Company’s lease commitments consist primarily of leased locations under various non-cancellable operating leases that expire between 2019 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.

The following table shows the details of the Company’s operating lease right-of-use asset and the associated lease liability for the period indicated:

Item	Balance Sheet Location	September 30, 2019
		(in thousands)
Operating lease asset	Other assets	$	51,295
Operating lease liability	Other liabilities	$	57,196

At September 30, 2019, the Company’s operating leases have a weighted-average remaining lease term of 7.5 years and a weighted average discount rate of 3.1%. Cash paid for amounts included in the measurement of operating lease liabilities was $2.8 million for the nine months ended September 30, 2019. Right-of-use assets obtained in exchange for new operating lease liabilities during the nine months ended September 30, 2019 was $9.2 million.

On September 26, 2019 the Company sold one of its Washington facilities and leased back a portion of the facility utilized for branch operations. The resulting gain on the sale was $5.9 million.

The following table shows the components of net lease costs:

		Three Months Ended September 30,			Nine Months Ended September 30,
Item	Statement of Income Location	2019			2019
		(in thousands)
Operating lease cost (1)	Occupancy	$	2,700		$	8,285
Variable lease cost	Occupancy	487			1,510
Sublease income	Occupancy	(297		)	(918		)
Net lease cost		$	2,890		$	8,877

__________

(1) Includes short-term lease costs, which are immaterial.

The following table shows future minimum payments for operating leases for the remaining three months of 2019 and subsequent years:

	Year ending December 31,
	(in thousands)
2019	$	2,717
2020	10,619
2021	10,376
2022	9,795
2023	8,546
Thereafter	22,685
Total future minimum lease payments	64,738
Amounts representing interest	(7,542		)
Present value of minimum lease payments	$	57,196

Future minimum lease payments for the Company’s operating leases as of December 31, 2018, prior to the adoption of the new lease guidance were as follows:

	Year Ending December 31,
	(in thousands)
2019	$	10,947
2020	9,766
2021	8,729
2022	8,102
2023	6,796
Thereafter	18,703
Total minimum payments	$	63,043

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Loans

9 Months Ended

Sep. 30, 2019

Loans and Leases Receivable, Net Amount [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 PCI 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 PCI loans.

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

	September 30, 2019									December 31, 2018
	Loans, excluding PCI loans			PCI Loans			Total			Loans, excluding PCI loans			PCI Loans			Total
	(in thousands)
Commercial business	$	3,707,314		$	9,004		$	3,716,318		$	3,438,422		$	9,240		$	3,447,662
Real estate:
One-to-four family residential	273,079			7,403			280,482			238,367			8,017			246,384
Commercial and multifamily residential	3,975,647			56,702			4,032,349			3,846,027			62,910			3,908,937
Total real estate	4,248,726			64,105			4,312,831			4,084,394			70,927			4,155,321
Real estate construction:
One-to-four family residential	195,198			144			195,342			217,790			153			217,943
Commercial and multifamily residential	261,786			486			262,272			284,394			534			284,928
Total real estate construction	456,984			630			457,614			502,184			687			502,871
Consumer	297,009			8,038			305,047			318,945			8,906			327,851
Less: Net unearned income	(35,455		)	—			(35,455		)	(42,194		)	—			(42,194		)
Total loans, net of unearned income	8,674,578			81,777			8,756,355			8,301,751			89,760			8,391,511
Less: ALLL	(79,602		)	(3,058		)	(82,660		)	(79,758		)	(3,611		)	(83,369		)
Total loans, net	$	8,594,976		$	78,719		$	8,673,695		$	8,221,993		$	86,149		$	8,308,142
Loans held for sale	$	15,036		$	—		$	15,036		$	3,849		$	—		$	3,849

At September 30, 2019 and December 31, 2018, 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.

At September 30, 2019 and December 31, 2018, $3.18 billion and $3.22 billion of commercial and residential real estate loans were pledged as collateral on FHLB borrowings and additional borrowing capacity. The Company has also pledged $138.9 million and $82.0 million of commercial loans to the FRB for additional borrowing capacity at September 30, 2019 and December 31, 2018, respectively.

The following is an analysis of nonaccrual loans as of September 30, 2019 and December 31, 2018:

	September 30, 2019				December 31, 2018
	Recorded Investment Nonaccrual Loans		Unpaid Principal Balance Nonaccrual Loans		Recorded Investment Nonaccrual Loans		Unpaid Principal Balance Nonaccrual Loans
	(in thousands)
Commercial business:
Secured	$	24,408	$	35,033	$	35,504	$	45,072
Unsecured	—		—		9		9
Real estate:
One-to-four family residential	574		594		1,158		1,178
Commercial and multifamily residential:
Commercial land	2,562		2,570		2,261		2,270
Income property	997		997		2,721		3,062
Owner occupied	6,524		6,633		9,922		10,300
Real estate construction:
One-to-four family residential:
Land and acquisition	—		—		318		318
Consumer	1,956		2,299		2,949		3,149
Total	$	37,021	$	48,126	$	54,842	$	65,358

Loans, excluding PCI loans

The following is an aging of the recorded investment of the loan portfolio as of September 30, 2019 and December 31, 2018:

	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, 2019	(in thousands)
Commercial business:
Secured	$	3,525,753	$	5,560	$	262	$	—	$	5,822	$	24,408	$	3,555,983
Unsecured	138,947		424		2		—		426		—		139,373
Real estate:
One-to-four family residential	269,593		2,429		437		—		2,866		574		273,033
Commercial and multifamily residential:
Commercial land	292,594		140		—		—		140		2,562		295,296
Income property	1,955,634		2,038		3,266		—		5,304		997		1,961,935
Owner occupied	1,689,919		1,727		138		—		1,865		6,524		1,698,308
Real estate construction:
One-to-four family residential:
Land and acquisition	1,614		—		—		—		—		—		1,614
Residential construction	192,563		—		—		—		—		—		192,563
Commercial and multifamily residential:
Income property	151,362		6,038		—		—		6,038		—		157,400
Owner occupied	100,610		1,636		—		—		1,636		—		102,246
Consumer	293,861		746		264		—		1,010		1,956		296,827
Total	$	8,612,450	$	20,738	$	4,369	$	—	$	25,107	$	37,021	$	8,674,578
	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, 2018	(in thousands)
Commercial business:
Secured	$	3,267,709	$	5,864	$	3,624	$	—	$	9,488	$	35,504	$	3,312,701
Unsecured	111,868		240		—		—		240		9		112,117
Real estate:
One-to-four family residential	233,941		694		233		—		927		1,158		236,026
Commercial and multifamily residential:
Commercial land	283,416		—		—		—		—		2,261		285,677
Income property	1,910,505		5,009		2,241		—		7,250		2,721		1,920,476
Owner occupied	1,606,085		1,744		—		—		1,744		9,922		1,617,751
Real estate construction:
One-to-four family residential:
Land and acquisition	4,099		—		—		—		—		318		4,417
Residential construction	212,303		93		—		—		93		—		212,396
Commercial and multifamily residential:
Income property	194,912		—		—		—		—		—		194,912
Owner occupied	79,805		7,258		—		—		7,258		—		87,063
Consumer	314,008		1,057		201		—		1,258		2,949		318,215
Total	$	8,218,651	$	21,959	$	6,299	$	—	$	28,258	$	54,842	$	8,301,751

The following is an analysis of impaired loans as of September 30, 2019 and December 31, 2018:

	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, 2019	(in thousands)
Commercial business:
Secured	$	3,530,404	$	25,579	$	9,114	$	10,673	$	1,879	$	16,465	$	21,051
Unsecured	139,360		13		13		13		—		—		—
Real estate:
One-to-four family residential	272,686		347		347		635		5		—		—
Commercial and multifamily residential:
Commercial land	292,436		2,860		1,591		1,601		320		1,269		1,304
Income property	1,961,935		—		—		—		—		—		—
Owner occupied	1,688,118		10,190		3,733		5,260		105		6,457		6,599
Real estate construction:
One-to-four family residential:
Land and acquisition	1,614		—		—		—		—		—		—
Residential construction	192,563		—		—		—		—		—		—
Commercial and multifamily residential:
Income property	157,400		—		—		—		—		—		—
Owner occupied	102,246		—		—		—		—		—		—
Consumer	294,599		2,228		379		514		17		1,849		2,006
Total	$	8,633,361	$	41,217	$	15,177	$	18,696	$	2,326	$	26,040	$	30,960
	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, 2018	(in thousands)
Commercial business:
Secured	$	3,286,416	$	26,285	$	6,350	$	8,460	$	2,023	$	19,935	$	24,404
Unsecured	112,097		20		20		20		—		—		—
Real estate:
One-to-four family residential	235,138		888		325		798		8		563		575
Commercial and multifamily residential:
Commercial land	283,451		2,226		—		—		—		2,226		2,272
Income property	1,917,522		2,954		99		165		1		2,855		3,011
Owner occupied	1,605,042		12,709		3,231		4,666		69		9,478		9,750
Real estate construction:
One-to-four family residential:
Land and acquisition	4,417		—		—		—		—		—		—
Residential construction	212,396		—		—		—		—		—		—
Commercial and multifamily residential:
Income property	194,912		—		—		—		—		—		—
Owner occupied	87,063		—		—		—		—		—		—
Consumer	314,193		4,022		3,326		3,584		31		696		704
Total	$	8,252,647	$	49,104	$	13,351	$	17,693	$	2,132	$	35,753	$	40,716

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,
	2019				2018				2019				2018
	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	$	21,419	$	108	$	43,805	$	2	$	24,833	$	267	$	43,055	$	43
Unsecured	15		—		444		—		17		1		234		1
Real estate:
One-to-four family residential	596		12		545		12		736		29		713		30
Commercial and multifamily residential:
Commercial land	2,861		8		2,246		26		2,704		23		2,407		26
Income property	664		—		2,443		34		1,401		—		3,367		96
Owner occupied	10,241		176		9,349		124		12,435		210		8,986		333
Real estate construction:
One-to-four family residential:
Residential construction	—		—		—		—		—		—		605		—
Commercial and multifamily residential:
Owner occupied	—		—		4,050		72		—		—		4,050		174
Consumer	2,842		10		5,646		44		3,290		28		6,135		110
Total	$	38,638	$	314	$	68,528	$	314	$	45,416	$	558	$	69,552	$	813

The following is an analysis of loans classified as TDR during the three and nine months ended September 30, 2019 and 2018:

	Three Months Ended September 30, 2019					Three Months Ended September 30, 2018
	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	6	$	5,108	$	5,108	1	$	14,511	$	14,511
Consumer	5	276		276		3	123		123
Total	11	$	5,384	$	5,384	4	$	14,634	$	14,634

	Nine Months Ended September 30, 2019					Nine Months Ended September 30, 2018
	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	11	$	6,642	$	6,642	9	$	17,605	$	17,605
Commercial and multifamily residential:
Income property	1	217		217		1	891		891
Consumer	9	394		394		18	2,540		2,540
Total	21	$	7,253	$	7,253	28	$	21,036	$	21,036

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 $1.5 million of additional funds on loans classified as TDR as of September 30, 2019. The Company had $2.1 million of such commitments at December 31, 2018. The Company did not have any loans modified as TDR that defaulted within 12 months of being modified as TDR during the three months ended September 30, 2019. The Company did have one $26 thousand consumer loan that defaulted within 12 months of being modified as a TDR during the nine months ended September 30, 2019. The defaulted TDR loan is collateralized and was included with the loans individually measured for specific impairment. The Company did not experience any similar defaults during the three and nine months ended September 30, 2018.

PCI Loans

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 PCI 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 ALLL and remaining valuation discounts as of September 30, 2019 and December 31, 2018:

	September 30, 2019		December 31, 2018
	(in thousands)
Commercial business	$	9,234	$	9,672
Real estate:
One-to-four family residential	8,764		9,848
Commercial and multifamily residential	59,383		66,340
Total real estate	68,147		76,188
Real estate construction:
One-to-four family residential	144		153
Commercial and multifamily residential	462		507
Total real estate construction	606		660
Consumer	8,744		9,765
Subtotal of PCI loans	86,731		96,285
Less:
Valuation discount resulting from acquisition accounting	4,954		6,525
ALLL	3,058		3,611
PCI loans, net of valuation discounts and allowance for loan losses	$	78,719	$	86,149

The following table shows the changes in accretable yield for PCI loans for the three and nine months ended September 30, 2019 and 2018:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2019			2018			2019			2018
	(in thousands)
Balance at beginning of period	$	20,989		$	25,350		$	21,949		$	31,176
Accretion	(1,289		)	(2,233		)	(4,865		)	(6,435		)
Disposals	(45		)	(221		)	61			(387		)
Reclassifications to (from) nonaccretable difference	719			279			3,229			(1,179		)
Balance at end of period	$	20,374		$	23,175		$	20,374		$	23,175

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Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2019

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,
	2019			2018			2019			2018
	(in thousands)
Goodwill
Total goodwill	$	765,842		$	765,842		$	765,842		$	765,842
Other intangible assets, net
CDI:
Gross CDI balance at beginning of period	105,473			105,473			105,473			105,473
Accumulated amortization at beginning of period	(65,852		)	(54,495		)	(60,455		)	(48,219		)
CDI, net at beginning of period	39,621			50,978			45,018			57,254
CDI current period amortization	(2,632		)	(3,070		)	(8,029		)	(9,346		)
Total CDI, net at end of period	36,989			47,908			36,989			47,908
Intangible assets not subject to amortization	919			919			919			919
Other intangible assets, net at end of period	37,908			48,827			37,908			48,827
Total goodwill and other intangible assets at end of period	$	803,750		$	814,669		$	803,750		$	814,669

Estimated Future Amortization Expense of Core Deposit Intangibles

The following table provides the estimated future amortization expense of our CDI for the remaining three months ending December 31, 2019 and the succeeding four years:

	Year ending December 31,
	(in thousands)
2019	$	2,451
2020	8,724
2021	7,264
2022	5,880
2023	4,552

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Accumulated Other Comprehensive Income (Tables)

9 Months Ended

Sep. 30, 2019

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 months ended September 30, 2019 and 2018:

	Unrealized Gains and Losses on Available-for-Sale Securities (1)			Unrealized Gains and Losses on Pension Plan Liability (1)			Unrealized Gains and Losses on Hedging Instruments (1)			Total (1)
Three Months Ended September 30, 2019	(in thousands)
Beginning balance	$	37,162		$	(2,055	)	$	12,043		$	47,150
Other comprehensive income before reclassifications	14,593			—			3,137			17,730
Amounts reclassified from accumulated other comprehensive income (2)	—			62			(58		)	4
Net current-period other comprehensive income	14,593			62			3,079			17,734
Ending balance	$	51,755		$	(1,993	)	$	15,122		$	64,884
Three Months Ended September 30, 2018
Beginning balance	$	(53,597	)	$	(2,324	)	$	—		$	(55,921	)
Other comprehensive loss before reclassifications	(14,149		)	—			—			(14,149		)
Amounts reclassified from accumulated other comprehensive loss (2)	—			61			—			61
Net current-period other comprehensive income (loss)	(14,149		)	61			—			(14,088		)
Ending balance	$	(67,746	)	$	(2,263	)	$	—		$	(70,009	)
Nine Months Ended September 30, 2019
Beginning balance	$	(33,128	)	$	(2,177	)	$	—		$	(35,305	)
Other comprehensive income before reclassifications	86,519			—			15,180			101,699
Amounts reclassified from accumulated other comprehensive loss (2)	(1,636		)	184			(58		)	(1,510		)
Net current-period other comprehensive income	84,883			184			15,122			100,189
Ending balance	$	51,755		$	(1,993	)	$	15,122		$	64,884
Nine Months Ended September 30, 2018
Beginning balance	$	(19,779	)	$	(2,446	)	$	—		$	(22,225	)
Adjustment pursuant to adoption of ASU 2016-01	157			—			—			157
Other comprehensive loss before reclassifications	(48,043		)	—			—			(48,043		)
Amounts reclassified from accumulated other comprehensive loss (2)	(81		)	183			—			102
Net current-period other comprehensive income (loss)	(48,124		)	183			—			(47,941		)
Ending balance	$	(67,746	)	$	(2,263	)	$	—		$	(70,009	)

__________

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

(2) See following table for details about these reclassifications.

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 months ended September 30, 2019 and 2018:

	Amount Reclassified from Accumulated Other Comprehensive Income (Loss)
	Three Months Ended September 30,						Nine Months Ended September 30,						Affected line Item in the Consolidated
	2019			2018			2019			2018			Statement of Income
	(in thousands)
Unrealized gains and losses on available for sale debt securities
Investment securities gains, net	$	—		$	—		$	2,132		$	106		Investment securities gains (losses), net
	—			—			2,132			106			Total before tax
	—			—			(496		)	(25		)	Income tax provision
	$	—		$	—		$	1,636		$	81		Net of tax
Amortization of pension plan liability
Actuarial losses	$	(81	)	$	(80	)	$	(240	)	$	(239	)	Compensation and employee benefits
	(81		)	(80		)	(240		)	(239		)	Total before tax
	19			19			56			56			Income tax provision
	$	(62	)	$	(61	)	$	(184	)	$	(183	)	Net of tax
Unrealized gains and losses from hedging instruments
Interest income	$	76		$	—		$	76		$	—		Loans
	76			—			76			—			Total before tax
	(18		)	—			(18		)	—			Income tax provision
	$	58		$	—		$	58		$	—		Net of tax

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Accounting Pronouncements Recently Issued Narrative - Impact of implementation of new accounting standards (Details) - USD ($) $ in Thousands		9 Months Ended
	Jan. 01, 2020	Sep. 30, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounting Standards Update 2016-02 [Member]
Change in other assets due to adoption of new ASU		$ 49,200
Change in other liabilities due to adoption of new ASU		48,200
Accounting Standards Update 2016-01 [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption				$ 0
Accounting Standards Update 2018-15 [Member]
Change in other assets due to adoption of new ASU		$ 920
Retained Earnings [Member] | Accounting Standards Update 2016-02 [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption			$ 782
Retained Earnings [Member] | Accounting Standards Update 2016-01 [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption				$ (157)
Forecast [Member] | Minimum [Member] | Accounting Standards Update 2016-13 [Member]
Estimated percentage change in allowance for credit losses	(10.00%)
Forecast [Member] | Maximum [Member] | Accounting Standards Update 2016-13 [Member]
Estimated percentage change in allowance for credit losses	5.00%

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Leases (Details) - USD ($) $ in Thousands			3 Months Ended	9 Months Ended
		Sep. 26, 2019	Sep. 30, 2019	Sep. 30, 2019
Other Commitments [Line Items]
Operating Lease, Right-of-Use Asset			$ 51,295	$ 51,295
Operating Lease, Liability			$ 57,196	$ 57,196
Operating Lease, Weighted Average Remaining Lease Term			7 years 6 months	7 years 6 months
Operating Lease, Weighted Average Discount Rate, Percent			3.10%	3.10%
Operating Lease, Payments			$ 2,800
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability			9,200
Operating Lease, Cost	[1]		2,700	$ 8,285
Variable Lease, Cost			487	1,510
Sublease Income			(297)	(918)
Lease, Cost			$ 2,890	$ 8,877
WASHINGTON
Other Commitments [Line Items]
Sale Leaseback Transaction, Date		Sep. 26, 2019
Sale and Leaseback Transaction, Gain (Loss), Net		$ 5,900

[1] Includes short-term lease costs, which are immaterial.

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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, 2019	Jun. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 8,756,355		$ 8,391,511
Less: ALLL	82,660	$ 80,517	83,369	$ 83,787	$ 80,150	$ 75,646
Loans, net	8,673,695		8,308,142
Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	8,674,578		8,301,751
Loans and Leases Receivable, Net of Deferred Income	8,674,578		8,301,751
Less: ALLL	79,602		79,758
Loans, net	8,594,976		8,221,993
Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	86,731		96,285
Loans and Leases Receivable, Net of Deferred Income	81,777		89,760
Acquisition Accounting Valuation Discount on Purchased Credit Impaired Loans	4,954		6,525
Less: ALLL	3,058		3,611
Loans, net	78,719		86,149
Pass [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	8,429,019		8,029,658
Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	77,869		94,337
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	47,014		105,844
Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,597		0
Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	198,543		166,239
Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	7,265		1,948
Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	2		10
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: ALLL	41,420	37,862	43,188	43,182	40,350	29,341
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	3,555,983		3,312,701
Secured Loans [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	8,684		8,881
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	3,433,097		3,160,910
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	7,008		8,041
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	30,153		48,779
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	955		0
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	92,731		103,007
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	721		840
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	2		5
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: ALLL	3,589	3,010	2,626	2,423	2,443	2,000
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	139,373		112,117
Unsecured Loans [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	550		791
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	139,176		112,091
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	550		692
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		21
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	197		0
Unsecured Loans [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		99
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		5
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]
Loans and Leases Receivable, Gross, Carrying Amount	280,482		246,384
Less: ALLL	603	645	593	372	461	701
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	273,079		238,367
Loans and Leases Receivable, Net of Deferred Income	273,033		236,026
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	8,764		9,848
Loans and Leases Receivable, Net of Deferred Income	7,403		8,017
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	272,021		234,416
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	8,521		9,633
One-to-Four Family Residential [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
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	1,012		1,610
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	243		215
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: ALLL	6,048	5,409	3,947	3,199	3,278	4,265
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	295,296		285,677
Commercial Land [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	9,634		10,363
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	277,264		276,348
Commercial Land [Member] | Pass [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	8,920		10,363
Commercial Land [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	4,665		5,082
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	642		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	13,367		4,247
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	72		0
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: ALLL	5,464	5,325	4,044	4,012	4,102	5,672
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	1,961,935		1,920,476
Income Property Multifamily [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	18,737		19,680
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	1,917,596		1,876,925
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	18,737		19,680
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	3,918		36,998
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	40,421		6,553
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		0
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: ALLL	5,731	5,230	4,533	4,675	4,356	5,459
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	1,698,308		1,617,751
Owner Occupied [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	31,012		36,297
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	1,642,558		1,556,852
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	25,059		35,944
Owner Occupied [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	8,278		14,964
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	47,472		45,935
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	5,953		353
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: ALLL	134	153	549	688	848	963
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	1,614		4,417
Land And Acquisition [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	144		153
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	1,614		4,099
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	144		151
Land And Acquisition [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Land And Acquisition [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Land And Acquisition [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		318
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	0		2
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: ALLL	5,617	6,103	5,536	5,233	4,572	3,709
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	192,563		212,396
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	192,563		212,225
Residential Construction [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Residential Construction [Member] | 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		171
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: ALLL	3,693	4,198	5,784	7,940	7,367	7,053
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	157,400		194,912
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	462		507
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	157,400		194,912
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	462		507
Income Property Multifamily Construction [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily Construction [Member] | Special Mention [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily Construction [Member] | Substandard [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily Construction [Member] | Substandard [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily Construction [Member] | Doubtful [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily Construction [Member] | Doubtful [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Income Property Multifamily Construction [Member] | Unlikely to be Collected Financing Receivable [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Owner Occupied Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: ALLL	3,007	2,412	2,604	2,437	2,299	4,413
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	102,246		87,063
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	102,246		87,063
Owner Occupied Construction [Member] | Special Mention [Member] | Loans, Excluding Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	0		0
Owner Occupied Construction [Member] | 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
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] | 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]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	305,047		327,851
Less: ALLL	4,225	$ 5,194	5,301	$ 5,023	$ 5,292	$ 5,163
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	297,009		318,945
Loans and Leases Receivable, Net of Deferred Income	296,827		318,215
Consumer Portfolio Segment [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	8,744		9,765
Loans and Leases Receivable, Net of Deferred Income	8,038		8,906
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	293,484		313,817
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	8,468		9,326
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	3,343		4,398
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	276		439
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

Loans Loans (Analysis of Purchased Credit Impaired Loans - Accretable Yield Rollforward) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2017
Loans, Analysis of Purchased Credit Impaired Loans, Accretable Yield Rollforward [Abstract]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield	$ 20,374	$ 23,175	$ 20,374	$ 23,175	$ 20,989	$ 21,949	$ 25,350	$ 31,176
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion	1,289	2,233	4,865	6,435
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Disposals of Loans	45	221	(61)	387
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference	$ 719	$ 279	$ 3,229	$ (1,179)

XML

Fair Value Accounting and Measurement (Quantitative Information About Level 3 Fair Value Measurements) (Details)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Fair Value, Level 1 to level 2 Transfers, Amount	$ 0	$ 0
Fair Value, Nonrecurring [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired loans	8,990,000	14,616,000
Fair Value, Inputs, Level 3 [Member] | Fair Value, Nonrecurring [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired loans	8,990,000	14,616,000
Collateral Pledged [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Nonrecurring [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired loans	$ 8,990,000	$ 14,616,000
Collateral Pledged [Member] | Valuation, Market Approach [Member] | Impaired Loans [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Nonrecurring [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loans, Measurement Input	0.0000	0.0000
Collateral Pledged [Member] | Valuation, Market Approach [Member] | Impaired Loans [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Nonrecurring [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loans, Measurement Input	1.0000	0.5451
Collateral Pledged [Member] | Valuation, Market Approach [Member] | Impaired Loans [Member] | Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Nonrecurring [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loans, Measurement Input	0.4209	0.0666

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Goodwill and Intangible Assets

9 Months Ended

Sep. 30, 2019

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, 2019 and concluded that there was no impairment.

The 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,
	2019			2018			2019			2018
	(in thousands)
Goodwill
Total goodwill	$	765,842		$	765,842		$	765,842		$	765,842
Other intangible assets, net
CDI:
Gross CDI balance at beginning of period	105,473			105,473			105,473			105,473
Accumulated amortization at beginning of period	(65,852		)	(54,495		)	(60,455		)	(48,219		)
CDI, net at beginning of period	39,621			50,978			45,018			57,254
CDI current period amortization	(2,632		)	(3,070		)	(8,029		)	(9,346		)
Total CDI, net at end of period	36,989			47,908			36,989			47,908
Intangible assets not subject to amortization	919			919			919			919
Other intangible assets, net at end of period	37,908			48,827			37,908			48,827
Total goodwill and other intangible assets at end of period	$	803,750		$	814,669		$	803,750		$	814,669

The following table provides the estimated future amortization expense of our CDI for the remaining three months ending December 31, 2019 and the succeeding four years:

	Year ending December 31,
	(in thousands)
2019	$	2,451
2020	8,724
2021	7,264
2022	5,880
2023	4,552

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Securities

9 Months Ended

Sep. 30, 2019

Debt Securities, Available-for-sale [Abstract]

Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]

Securities

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

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
September 30, 2019	(in thousands)
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations (1)	$	2,432,873	$	61,024	$	(11,062	)	$	2,482,835
Other asset-backed securities (1)	166,482		5,149		(53		)	171,578
State and municipal securities	488,273		9,471		(430		)	497,314
U.S. government agency and government-sponsored enterprise securities	212,265		3,382		(52		)	215,595
U.S. government securities	250		—		—			250
Total	$	3,300,143	$	79,026	$	(11,597	)	$	3,367,572
December 31, 2018
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations (1)	$	2,045,728	$	8,473	$	(40,846	)	$	2,013,355
Other asset-backed securities (1)	176,793		763		(2,621		)	174,935
State and municipal securities	579,755		2,328		(7,760		)	574,323
U.S. government agency and government-sponsored enterprise securities	408,088		1,235		(4,736		)	404,587
U.S. government securities	251		—		(3		)	248
Total	$	3,210,615	$	12,799	$	(55,966	)	$	3,167,448

__________

(1) Beginning July 2019, other asset-backed securities were presented separately in this table. Prior period amounts that were previously reported in U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations have been reclassified to conform to current period presentation.

The following table provides the proceeds and both gross realized gains and losses on sales of debt securities available for sale as well as other securities gains and losses for the periods indicated:

	Three Months Ended September 30,					Nine Months Ended September 30,
	2019		2018			2019			2018
	(in thousands)
Proceeds from sales of debt securities available for sale	$	—	$	—		$	259,554		$	32,330
Gross realized gains from sales of debt securities available for sale	$	—	$	—		$	3,357		$	235
Gross realized losses from sales of debt securities available for sale	—		—			(1,225		)	(129		)
Other securities losses, net (1)	—		(62		)	—			(179		)
Investment securities gains, net	$	—	$	(62	)	$	2,132		$	(73	)

__________

(1) Other securities losses, net includes net unrealized loss activity associated with equity securities for the periods ended September 30, 2018. There were no sales of equity securities during the periods presented.

The scheduled contractual maturities of debt securities available for sale at September 30, 2019 are presented as follows:

	September 30, 2019
	Amortized Cost		Fair Value
	(in thousands)
Due within one year	$	112,412	$	112,594
Due after one year through five years	412,269		416,294
Due after five years through ten years	1,592,778		1,650,631
Due after ten years	1,182,684		1,188,053
Total debt securities available for sale	$	3,300,143	$	3,367,572

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

	September 30, 2019
	(in thousands)
To secure public funds	$	443,320
To secure borrowings	111,421
Other securities pledged	155,727
Total securities pledged as collateral	$	710,468

The following table shows the gross unrealized losses and fair value of the Company’s debt securities available for sale 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, 2019 and December 31, 2018:

	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
September 30, 2019	(in thousands)
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations (1)	$	478,690	$	(4,017	)	$	528,228	$	(7,045	)	$	1,006,918	$	(11,062	)
Other asset-backed securities (1)	—		—			6,926		(53		)	6,926		(53		)
State and municipal securities	52,763		(255		)	23,237		(175		)	76,000		(430		)
U.S. government agency and government-sponsored enterprise securities	—		—			57,448		(52		)	57,448		(52		)
U.S. government securities	—		—			250		—			250		—
Total	$	531,453	$	(4,272	)	$	616,089	$	(7,325	)	$	1,147,542	$	(11,597	)
December 31, 2018
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations (1)	$	114,551	$	(750	)	$	1,207,020	$	(40,096	)	$	1,321,571	$	(40,846	)
Other asset-backed securities (1)	40,071		(222		)	94,367		(2,399		)	134,438		(2,621		)
State and municipal securities	106,292		(581		)	280,496		(7,179		)	386,788		(7,760		)
U.S. government agency and government-sponsored enterprise securities	15,392		(45		)	291,435		(4,691		)	306,827		(4,736		)
U.S. government securities	—		—			247		(3		)	247		(3		)
Total	$	276,306	$	(1,598	)	$	1,873,565	$	(54,368	)	$	2,149,871	$	(55,966	)

__________

(1) Beginning July 2019, other asset-backed securities were presented separately in this table. Prior period amounts that were previously reported in U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations have been reclassified to conform to current period presentation.

At September 30, 2019, there were 211 U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations securities in an unrealized loss position, of which 170 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, 2019.

At September 30, 2019, there were six other asset-backed securities in an unrealized loss position, all of which 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, 2019.

At September 30, 2019, there were 81 state and municipal government securities in an unrealized loss position, of which 27 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, 2019, 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, 2019.

At September 30, 2019, there were seven U.S. government agency and government-sponsored enterprise securities in an unrealized loss position, all of which 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, 2019.

At September 30, 2019, there was one U.S. government security in an unrealized loss position, which was also in a continuous loss position for more than 12 months. 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, 2019.

XML

Securities (Summary of Gross Unrealized Losses and Fair Value of the Investments with Unrealized Losses) (Details) - USD ($) $ in Thousands		Sep. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months Fair Value		$ 531,453	$ 276,306
Less than 12 Months Unrealized Losses		(4,272)	(1,598)
12 Months or More Fair Value		616,089	1,873,565
12 Months or More Unrealized Losses		(7,325)	(54,368)
Total Fair Value		1,147,542	2,149,871
Total Unrealized Losses		(11,597)	(55,966)
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months Fair Value	[1]	478,690	114,551
Less than 12 Months Unrealized Losses	[1]	(4,017)	(750)
12 Months or More Fair Value	[1]	528,228	1,207,020
12 Months or More Unrealized Losses	[1]	(7,045)	(40,096)
Total Fair Value	[1]	1,006,918	1,321,571
Total Unrealized Losses	[1]	(11,062)	(40,846)
Asset-backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months Fair Value	[1]	0	40,071
Less than 12 Months Unrealized Losses	[1]	0	(222)
12 Months or More Fair Value	[1]	6,926	94,367
12 Months or More Unrealized Losses	[1]	(53)	(2,399)
Total Fair Value	[1]	6,926	134,438
Total Unrealized Losses	[1]	(53)	(2,621)
State and Municipal Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months Fair Value		52,763	106,292
Less than 12 Months Unrealized Losses		(255)	(581)
12 Months or More Fair Value		23,237	280,496
12 Months or More Unrealized Losses		(175)	(7,179)
Total Fair Value		76,000	386,788
Total Unrealized Losses		(430)	(7,760)
US Government Corporations and Agencies Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months Fair Value		0	15,392
Less than 12 Months Unrealized Losses		0	(45)
12 Months or More Fair Value		57,448	291,435
12 Months or More Unrealized Losses		(52)	(4,691)
Total Fair Value		57,448	306,827
Total Unrealized Losses		(52)	(4,736)
US Government Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months Fair Value		0	0
Less than 12 Months Unrealized Losses		0	0
12 Months or More Fair Value		250	247
12 Months or More Unrealized Losses		0	(3)
Total Fair Value		250	247
Total Unrealized Losses		$ 0	$ (3)

[1] Beginning July 2019, other asset-backed securities were presented separately in this table. Prior period amounts that were previously reported in U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations have been reclassified to conform to current period presentation.

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Leases (Tables)

9 Months Ended

Sep. 30, 2019

Leases [Abstract]

Operating Leases by balance sheet location [Table Text Block]

The following table shows the details of the Company’s operating lease right-of-use asset and the associated lease liability for the period indicated:

Item	Balance Sheet Location	September 30, 2019
		(in thousands)
Operating lease asset	Other assets	$	51,295
Operating lease liability	Other liabilities	$	57,196

Lease, Cost [Table Text Block]

The following table shows the components of net lease costs:

		Three Months Ended September 30,			Nine Months Ended September 30,
Item	Statement of Income Location	2019			2019
		(in thousands)
Operating lease cost (1)	Occupancy	$	2,700		$	8,285
Variable lease cost	Occupancy	487			1,510
Sublease income	Occupancy	(297		)	(918		)
Net lease cost		$	2,890		$	8,877

__________

(1) Includes short-term lease costs, which are immaterial.

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

The following table shows future minimum payments for operating leases for the remaining three months of 2019 and subsequent years:

	Year ending December 31,
	(in thousands)
2019	$	2,717
2020	10,619
2021	10,376
2022	9,795
2023	8,546
Thereafter	22,685
Total future minimum lease payments	64,738
Amounts representing interest	(7,542		)
Present value of minimum lease payments	$	57,196

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

Future minimum lease payments for the Company’s operating leases as of December 31, 2018, prior to the adoption of the new lease guidance were as follows:

	Year Ending December 31,
	(in thousands)
2019	$	10,947
2020	9,766
2021	8,729
2022	8,102
2023	6,796
Thereafter	18,703
Total minimum payments	$	63,043

XML

Fair Value Accounting and Measurement (Tables)

9 Months Ended

Sep. 30, 2019

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

Fair Value Inputs, Assets, Quantitative Information

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, 2019 and December 31, 2018 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, 2019	(in thousands)
Assets
Debt securities available for sale:
U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations (1)	$	2,482,835	$	—	$	2,482,835	$	—
Other asset-backed securities (1)	171,578		—		171,578		—
State and municipal debt securities	497,314		—		497,314		—
U.S. government agency and government-sponsored enterprise securities	215,595		—		215,595		—
U.S. government securities	250		250		—		—
Total debt securities available for sale	$	3,367,572	$	250	$	3,367,322	$	—
Other assets:
Interest rate contracts	$	25,045	$	—	$	25,045	$	—
Interest rate collar	$	19,703	$	—	$	19,703	$	—
Liabilities
Other liabilities:
Interest rate contracts	$	25,046	$	—	$	25,046	$	—

	Fair Value		Fair Value Measurements at Reporting Date Using
			Level 1		Level 2		Level 3
December 31, 2018	(in thousands)
Assets
Debt securities available for sale:
U.S. government agency and government-sponsored enterprise mortgage-back securities and collateralized mortgage obligations (1)	$	2,013,355	$	—	$	2,013,355	$	—
Other asset-backed securities (1)	174,935		—		174,935		—
State and municipal debt securities	574,323		—		574,323		—
U.S. government agency and government-sponsored enterprise securities	404,587		—		404,587		—
U.S. government securities	248		248		—		—
Total debt securities available for sale	$	3,167,448	$	248	$	3,167,200	$	—
Other assets:
Interest rate contracts	$	7,033	$	—	$	7,033	$	—
Liabilities
Other liabilities:
Interest rate contracts	$	7,033	$	—	$	7,033	$	—

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, 2019		Fair Value Measurements at Reporting Date Using						Losses During the Three Months Ended September 30, 2019		Losses During the Nine Months Ended September 30, 2019
			Level 1		Level 2		Level 3
	(in thousands)
Impaired loans	$	8,990	$	—	$	—	$	8,990	$	1,722	$	3,299
	$	8,990	$	—	$	—	$	8,990	$	1,722	$	3,299

	Fair value at September 30, 2018		Fair Value Measurements at Reporting Date Using						Losses During the Three Months Ended September 30, 2018		Losses During the Nine Months Ended September 30, 2018
			Level 1		Level 2		Level 3
	(in thousands)
Impaired loans	$	14,616	$	—	$	—	$	14,616	$	1,208	$	1,208
OREO	1,240		—		—		1,240		445		445
	$	15,856	$	—	$	—	$	15,856	$	1,653	$	1,653

Fair Value, by Balance Sheet Grouping

The following tables summarize carrying amounts and estimated fair values of selected financial instruments by level within the fair value hierarchy at September 30, 2019 and December 31, 2018:

	September 30, 2019
	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
	(in thousands)
Assets
Cash and due from banks	$	278,461	$	278,461	$	278,461	$	—	$	—
Interest-earning deposits with banks	20,144		20,144		20,144		—		—
Debt securities available for sale	3,367,572		3,367,572		250		3,367,322		—
FHLB stock	29,680		29,680		—		29,680		—
Loans held for sale	15,036		15,036		—		15,036		—
Loans	8,673,695		8,895,564		—		—		8,895,564
Interest rate contracts	25,045		24,045		—		24,045		—
Interest rate collar	19,703		19,703		—		19,703		—
Liabilities
Time deposits	$	366,773	$	361,195	$	—	$	361,195	$	—
FHLB advances	492,482		493,736		—		493,736		—
Repurchase agreements	24,489		24,489		—		24,489		—
Subordinated debentures	35,323		35,255		—		35,255		—
Interest rate contracts	25,046		25,046		—		25,046		—

	December 31, 2018
	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
	(in thousands)
Assets
Cash and due from banks	$	260,180	$	260,180	$	260,180	$	—	$	—
Interest-earning deposits with banks	17,407		17,407		17,407		—		—
Debt securities available for sale	3,167,448		3,167,448		248		3,167,200		—
FHLB stock	25,960		25,960		—		25,960		—
Loans held for sale	3,849		3,849		—		3,849		—
Loans	8,308,142		8,316,946		—		—		8,316,946
Interest rate contracts	7,033		7,033		—		7,033		—
Liabilities
Time deposits	$	414,443	$	407,659	$	—	$	407,659	$	—
FHLB advances	399,523		400,085		—		400,085		—
Repurchase agreements	61,094		61,094		—		61,094		—
Subordinated debentures	35,462		34,897		—		34,897		—
Interest rate contracts	7,033		7,033		—		7,033		—

Fair Value, Inputs, Level 3 [Member] | Fair Value, 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, 2019		Valuation Technique	Unobservable Input	Range (Weighted Average) (1)
	(dollars in thousands)
Impaired loans - collateral-dependent (2)	$	8,990	Fair Market Value of Collateral	Adjustment to Stated Value	0.00% - 100.00% (42.09%)

__________

(1) Discount applied to appraised value or stated value (in the case of accounts receivable, fixed assets and inventory).

(2) Collateral consists of cash, accounts receivable, fixed assets, inventory and real estate.

	Fair value at September 30, 2018		Valuation Technique	Unobservable Input	Range (Weighted Average) (1)
	(dollars in thousands)
Impaired loans - collateral-dependent (3)	$	14,616	Fair Market Value of Collateral	Adjustment to Stated Value	0.00% - 54.51% (6.66%)
OREO	$	1,240	Fair Market Value of Collateral	Adjustment to Appraisal Value	N/A (2)

__________

(1) Discount applied to appraisal value or stated value (in the case of accounts receivable, fixed assets and inventory).

(2) Quantitative disclosures are not provided for OREO because there were no adjustments made to the appraisal values.

(3) Collateral consists of accounts receivable, fixed assets, inventory, cash, real estate, and state guarantee.

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, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Allowance For Loan And Lease Losses And Unfunded Loan Commitments And Letters Of Credit
Beginning balance	$ 3,980	$ 3,680	$ 4,330	$ 3,130
Allowance for Loan and Lease Losses, Net Changes In Unfunded Commitments and Letters Of Credit Allowance	(400)	275	(750)	825
Ending balance	$ 3,580	$ 3,955	$ 3,580	$ 3,955

XML

Loans Loans (Analysis of Troubled Debt Restructurings) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($) Modifications contract	Sep. 30, 2018 USD ($) Modifications contract	Sep. 30, 2019 USD ($) Modifications contract	Sep. 30, 2018 USD ($) Modifications contract	Dec. 31, 2018 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | contract	0	0	1	0
Financing Receivable Modifications Additional Commitment To Lend	$ 1,500		$ 1,500		$ 2,100
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 0	$ 0	$ 26	$ 0
Loans, Excluding Purchased Credit Impaired Loans [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | Modifications	11	4	21	28
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 5,384	$ 14,634	$ 7,253	$ 21,036
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 5,384	$ 14,634	$ 7,253	$ 21,036
Loans, Excluding Purchased Credit Impaired Loans [Member] | Secured Loans [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | Modifications	6	1	11	9
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 5,108	$ 14,511	$ 6,642	$ 17,605
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 5,108	$ 14,511	$ 6,642	$ 17,605
Loans, Excluding Purchased Credit Impaired Loans [Member] | Income Property Multifamily [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | Modifications			1	1
Financing Receivable, Troubled Debt Restructuring, Premodification			$ 217	$ 891
Financing Receivable, Troubled Debt Restructuring, Postmodification			$ 217	$ 891
Loans, Excluding Purchased Credit Impaired Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | Modifications	5	3	9	18
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 276	$ 123	$ 394	$ 2,540
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 276	$ 123	$ 394	$ 2,540

XML

Goodwill and Intangible Assets (Estimated Future Amortization Expense of Core Deposit Intangibles) (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Future Amortization Expense For Core Deposit Intangibles
2019	$ 2,451
2020	8,724
2021	7,264
2022	5,880
2023	$ 4,552

XML

Fair Value Accounting and Measurement (Carrying Amounts and Estimated Fair Values of Selected Financial Instruments) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Assets
Interest-earning deposits with banks	$ 20,144	$ 17,407
Debt securities available for sale	3,367,572	3,167,448
Estimate of Fair Value Measurement [Member]
Assets
Cash and due from banks	278,461	260,180
Interest-earning deposits with banks	20,144	17,407
Debt securities available for sale	3,367,572	3,167,448
FHLB stock	29,680	25,960
Loans held for sale	15,036	3,849
Loans	8,895,564	8,316,946
Interest rate contracts	24,045	7,033
Interest Rate Cash Flow Hedge Asset at Fair Value	19,703
Liabilities
Deposits	361,195	407,659
FHLB Advances	493,736	400,085
Repurchase agreements	24,489	61,094
Subordinated Debt Obligations, Fair Value Disclosure	35,255	34,897
Interest rate contracts	25,046	7,033
Reported Value Measurement [Member]
Assets
Cash and due from banks	278,461	260,180
Interest-earning deposits with banks	20,144	17,407
Debt securities available for sale	3,367,572	3,167,448
FHLB stock	29,680	25,960
Loans held for sale	15,036	3,849
Loans	8,673,695	8,308,142
Interest rate contracts	25,045	7,033
Interest Rate Cash Flow Hedge Asset at Fair Value	19,703
Liabilities
Deposits	366,773	414,443
FHLB Advances	492,482	399,523
Repurchase agreements	24,489	61,094
Subordinated Debt Obligations, Fair Value Disclosure	35,323	35,462
Interest rate contracts	25,046	7,033
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member]
Assets
Cash and due from banks	278,461	260,180
Interest-earning deposits with banks	20,144	17,407
Debt securities available for sale	250	248
FHLB stock	0	0
Loans held for sale	0	0
Loans	0	0
Interest rate contracts	0	0
Interest Rate Cash Flow Hedge Asset at Fair Value	0
Liabilities
Deposits	0	0
FHLB Advances	0	0
Repurchase agreements	0	0
Subordinated Debt Obligations, Fair Value Disclosure	0	0
Interest rate contracts	0	0
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member]
Assets
Cash and due from banks	0	0
Interest-earning deposits with banks	0	0
Debt securities available for sale	3,367,322	3,167,200
FHLB stock	29,680	25,960
Loans held for sale	15,036	3,849
Loans	0	0
Interest rate contracts	24,045	7,033
Interest Rate Cash Flow Hedge Asset at Fair Value	19,703
Liabilities
Deposits	361,195	407,659
FHLB Advances	493,736	400,085
Repurchase agreements	24,489	61,094
Subordinated Debt Obligations, Fair Value Disclosure	35,255	34,897
Interest rate contracts	25,046	7,033
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [Member]
Assets
Cash and due from banks	0	0
Interest-earning deposits with banks	0	0
Debt securities available for sale	0	0
FHLB stock	0	0
Loans held for sale	0	0
Loans	8,895,564	8,316,946
Interest rate contracts	0	0
Interest Rate Cash Flow Hedge Asset at Fair Value	0
Liabilities
Deposits	0	0
FHLB Advances	0	0
Repurchase agreements	0	0
Subordinated Debt Obligations, Fair Value Disclosure	0	0
Interest rate contracts	$ 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, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	$ 8,633,361		$ 8,633,361		$ 8,252,647
Recorded Investment of Loans Individually Measured for Specific Impairment	41,217		41,217		49,104
Recorded Investment	26,040		26,040		35,753
Unpaid Principal Balance	30,960		30,960		40,716
Related Allowance	2,326		2,326		2,132
Average Recorded Investment Impaired Loans	38,638	$ 68,528	45,416	$ 69,552
Interest Recognized on Impaired Loans	314	314	558	813
Secured Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	3,530,404		3,530,404		3,286,416
Recorded Investment of Loans Individually Measured for Specific Impairment	25,579		25,579		26,285
Recorded Investment	9,114		9,114		6,350
Unpaid Principal Balance	10,673		10,673		8,460
Related Allowance	1,879		1,879		2,023
Average Recorded Investment Impaired Loans	21,419	43,805	24,833	43,055
Interest Recognized on Impaired Loans	108	2	267	43
Unsecured Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	139,360		139,360		112,097
Recorded Investment of Loans Individually Measured for Specific Impairment	13		13		20
Recorded Investment	13		13		20
Unpaid Principal Balance	13		13		20
Related Allowance	0		0		0
Average Recorded Investment Impaired Loans	15	444	17	234
Interest Recognized on Impaired Loans	0	0	1	1
One-to-Four Family Residential [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	272,686		272,686		235,138
Recorded Investment of Loans Individually Measured for Specific Impairment	347		347		888
Recorded Investment	347		347		325
Unpaid Principal Balance	635		635		798
Related Allowance	5		5		8
Average Recorded Investment Impaired Loans	596	545	736	713
Interest Recognized on Impaired Loans	12	12	29	30
Commercial Land [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	292,436		292,436		283,451
Recorded Investment of Loans Individually Measured for Specific Impairment	2,860		2,860		2,226
Recorded Investment	1,591		1,591		0
Unpaid Principal Balance	1,601		1,601		0
Related Allowance	320		320		0
Average Recorded Investment Impaired Loans	2,861	2,246	2,704	2,407
Interest Recognized on Impaired Loans	8	26	23	26
Income Property Multifamily [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	1,961,935		1,961,935		1,917,522
Recorded Investment of Loans Individually Measured for Specific Impairment	0		0		2,954
Recorded Investment	0		0		99
Unpaid Principal Balance	0		0		165
Related Allowance	0		0		1
Average Recorded Investment Impaired Loans	664	2,443	1,401	3,367
Interest Recognized on Impaired Loans	0	34	0	96
Owner Occupied [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	1,688,118		1,688,118		1,605,042
Recorded Investment of Loans Individually Measured for Specific Impairment	10,190		10,190		12,709
Recorded Investment	3,733		3,733		3,231
Unpaid Principal Balance	5,260		5,260		4,666
Related Allowance	105		105		69
Average Recorded Investment Impaired Loans	10,241	9,349	12,435	8,986
Interest Recognized on Impaired Loans	176	124	210	333
Land And Acquisition [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	1,614		1,614		4,417
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
Residential Construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	192,563		192,563		212,396
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	605
Interest Recognized on Impaired Loans	0	0	0	0
Income Property Multifamily Construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	157,400		157,400		194,912
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, Credit Quality Indicator [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	102,246		102,246		87,063
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	4,050	0	4,050
Interest Recognized on Impaired Loans	0	72	0	174
Consumer Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment of Loans Collectively Measured for Contingency Provision	294,599		294,599		314,193
Recorded Investment of Loans Individually Measured for Specific Impairment	2,228		2,228		4,022
Recorded Investment	379		379		3,326
Unpaid Principal Balance	514		514		3,584
Related Allowance	17		17		31
Average Recorded Investment Impaired Loans	2,842	5,646	3,290	6,135
Interest Recognized on Impaired Loans	10	$ 44	28	$ 110
Impaired Loans With Recorded Allowance [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment	15,177		15,177		13,351
Unpaid Principal Balance	18,696		18,696		17,693
Impaired Loans Without Recorded Allowance [Member] | Secured Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment	16,465		16,465		19,935
Unpaid Principal Balance	21,051		21,051		24,404
Impaired Loans Without Recorded Allowance [Member] | Unsecured Loans [Member]
Financing Receivable, Credit Quality Indicator [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, Credit Quality Indicator [Line Items]
Recorded Investment	0		0		563
Unpaid Principal Balance	0		0		575
Impaired Loans Without Recorded Allowance [Member] | Commercial Land [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment	1,269		1,269		2,226
Unpaid Principal Balance	1,304		1,304		2,272
Impaired Loans Without Recorded Allowance [Member] | Income Property Multifamily [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment	0		0		2,855
Unpaid Principal Balance	0		0		3,011
Impaired Loans Without Recorded Allowance [Member] | Owner Occupied [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment	6,457		6,457		9,478
Unpaid Principal Balance	6,599		6,599		9,750
Impaired Loans Without Recorded Allowance [Member] | Land And Acquisition [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Impaired Loans Without Recorded Allowance [Member] | Residential Construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Impaired Loans Without Recorded Allowance [Member] | Income Property Multifamily Construction [Member]
Financing Receivable, Credit Quality Indicator [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, Credit Quality Indicator [Line Items]
Recorded Investment	0		0		0
Unpaid Principal Balance	0		0		0
Impaired Loans Without Recorded Allowance [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment	1,849		1,849		696
Unpaid Principal Balance	$ 2,006		$ 2,006		$ 704

XML

Securities (Schedule of Contractual Maturities of Investment Securities Available for Sale) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Abstract]
Due within one year, Amortized Cost	$ 112,412
Due after one year through five years, Amortized Cost	412,269
Due after five years through ten years, Amortized Cost	1,592,778
Due after ten years, Amortized Cost	1,182,684
Debt securities available-for-sale, amortized cost	3,300,143	$ 3,210,615
Due within one year, Fair Value	112,594
Due after one year through five years, Fair Value	416,294
Due after five years through ten years, Fair Value	1,650,631
Due after ten years, Fair Value	1,188,053
Debt securities available-for-sale, Fair Value	$ 3,367,572	$ 3,167,448

XML

Loans (Narrative) (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($) contract	Sep. 30, 2018 contract	Sep. 30, 2019 USD ($) contract	Sep. 30, 2018 contract	Dec. 31, 2018 USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | contract	0	0	1	0
Loans Receivable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	$ 3,180.0		$ 3,180.0		$ 3,220.0
Federal Reserve Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	$ 138.9		$ 138.9		$ 82.0

XML

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net income		$ 50,727	$ 46,415	$ 148,322	$ 128,134
Unrealized gain (loss) from securities
Net unrealized holding gain (loss) from available for sale debt securities arising during the period, net of tax		14,593	(14,149)	86,519	(48,043)
Reclassification adjustment of net (gain) loss from sale of available for sale debt securities included in income, net of tax				(1,636)	(81)
Net unrealized gain (loss) from securities, net of reclassification adjustment		14,593	(14,149)	84,883	(48,124)
Pension plan liability adjustment:
Amortization of unrecognized net actuarial loss included in net periodic pension cost, net of tax		62	61	184	183
Pension plan liability adjustment, net		62	61	184	183
Unrealized gain (loss) from cash flow hedging instruments
Net unrealized gain in cash flow hedging instruments arising during the period, net of tax		3,137	0	15,180	0
Reclassification adjustment from net gain in cash flow hedging instruments included in income, net of tax		(58)	0	(58)	0
Net unrealized gain from cash flow hedging instruments, net of reclassification adjustment		3,079	0	15,122	0
Other Comprehensive Income (Loss)	[1]	17,734	(14,088)	100,189	(47,941)
Total comprehensive income		$ 68,461	$ 32,327	$ 248,511	$ 80,193

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

XML

Document - shares	9 Months Ended
	Sep. 30, 2019	Oct. 31, 2019
Entity Information [Line Items]
Entity Emerging Growth Company	false
Entity Address, City or Town	Tacoma
Entity Address, State or Province	WA
Entity Address, Postal Zip Code	98402-2156
City Area Code	253
Security Exchange Name	NASDAQ
Entity Small Business	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Entity Central Index Key	0000887343
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		72,136,242
Entity Address, Address Line One	1301 A Street
Document Type	10-Q
Trading Symbol	COLB
Entity Current Reporting Status	Yes
Entity Registrant Name	COLUMBIA BANKING SYSTEM, INC.
Entity Interactive Data Current	Yes
Local Phone Number	305-1900
Amendment Flag	false
Document Period End Date	Sep. 30, 2019
Entity File Number	0-20288
Entity Tax Identification Number	91-1422237
Entity Incorporation, State or Country Code	WA
Title of 12(b) Security	Common Stock, No Par Value
Document Quarterly Report	true
Document Transition Report	false

XML

Shareholders' Equity (Details) - $ / shares	Oct. 24, 2019	Jul. 25, 2019	Apr. 25, 2019	Jan. 24, 2019
Subsequent Event [Line Items]
Common Stock, Special Cash Dividends, Per Share, Declared		$ 0	$ 0.14	$ 0.14
Declared quarterly cash dividend		$ 0.28	$ 0.28	$ 0.28
Subsequent Event [Member]
Subsequent Event [Line Items]
Declared quarterly cash dividend	$ 0.28

XML

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash Flows From Operating Activities
Net income	$ 148,322	$ 128,134
Adjustments to reconcile net income to net cash provided by operating activities
Provision for loan and lease losses	1,879	12,980
Stock-based compensation expense	6,827	6,231
Depreciation, amortization and accretion	26,150	25,807
Investment securities (gain) loss, net	2,132	(73)
Net realized (gain) loss on sale of premises and equipment and loans held for investment	6,787	(142)
Net realized (gain) loss on sale and valuation adjustments of OREO	602	(1,299)
Gain on bank owned life insurance death benefit	2,975	0
Originations of loans held for sale	134,634	103,614
Proceeds from sales of loans held for sale	123,447	104,105
Net change in:
Interest receivable	(3,180)	(7,595)
Interest payable	632	618
Other assets	(31,840)	(2,599)
Other liabilities	29,706	5,662
Net cash provided by operating activities	154,813	171,243
Cash Flows From Investing Activities
Loans originated, net of principal collected (1)	(305,581)	(121,413)	[1]
Purchases of debt securities available for sale	(649,133)	(606,052)
Purchases of loans held for investment (1)	(57,075)	(46,969)	[1]
Purchases of premises and equipment	(5,833)	(8,253)
Payments to Acquire Federal Home Loan Bank Stock	(190,800)	(136,120)
Proceeds from sales of debt securities available for sale	259,554	32,330
Proceeds from principal repayments and maturities of debt securities available for sale	287,479	311,956
Proceeds from Sales of Assets, Investing Activities	7,735	14,956
Proceeds from redemption of Federal Home Loan Bank Stock	187,080	129,920
Proceeds from sales of other real estate and other personal property owned	6,433	5,868
Proceeds from Life Insurance Policy	0	5,074
Net cash used in investing activities	(460,141)	(418,703)
Cash Flows From Financing Activities
Net increase in deposits	397,893	72,151
Net increase (decrease) in sweep repurchase agreements (2)	(36,605)	8,138	[2]
Proceeds from Federal Home Loan Bank advances	4,770,000	3,403,000
Proceeds from FRB borrowings	36,000	5,010
Proceeds from Other Debt	100	0
Proceeds from exercise of stock options	2,025	1,857
Repayment of Federal Home Loan Bank advances	(4,677,000)	(3,248,000)
Repayment of FRB borrowings	36,000	5,010
Repayments of Other Debt	(100)	0
Repayments of junior subordinated debt	0	8,248
Repayment of term repurchase agreement (2)	0	(25,000)	[2]
Payment of common stock dividends	(81,822)	(54,149)
Purchase and retirement of common stock	(45,380)	0
Payment, Tax Withholding, Share-based Payment Arrangement	2,765	2,660
Net cash provided by financing activities	326,346	147,089
Increase (decrease) in cash and cash equivalents	21,018	(100,371)
Cash and cash equivalents at beginning of period	277,587	342,533
Cash and cash equivalents at end of period	298,605	242,162
Supplemental Information:
Cash paid for interest	27,623	11,699
Cash paid for income tax	33,134	12,768
Non-cash investing and financing activities
Loans transferred to other real estate owned	386	1,200
Premises and equipment expenditures incurred but not yet paid	152	464
Change in dividends payable on unvested shares	$ 252	$ 6

[1] Revised from amounts previously reported to correct an immaterial misclassification of $47.0 million of purchases of loans held for investment within loans originated, net of principal collected, for the nine months ended September 30, 2018. There were no changes to net cash flows from operating, investing or financing activities as a result of this change.

[2] Revised from amounts previously reported to correct an immaterial misclassification of a $25.0 million repayment of the term repurchase agreement within net increase (decrease) in sweep repurchase agreements for the nine months ended September 30, 2018. There were no changes to net cash flows from operating, investing or financing activities as a result of this change.

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Revolving Line of Credit (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 30,000
Line of Credit [Member]
Line of Credit Facility [Line Items]
Short-term Debt	$ 0

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Earnings per Common Share

9 Months Ended

Sep. 30, 2019

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 which qualify as participating securities.

The following table sets forth the computation of basic and diluted EPS for the three and nine months ended September 30, 2019 and 2018:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2019		2018		2019		2018
	(in thousands except per share amounts)
Basic EPS:
Net income	$	50,727	$	46,415	$	148,322	$	128,134
Less: Earnings allocated to participating securities:
Nonvested restricted shares	358		504		1,204		1,413
Earnings allocated to common shareholders	$	50,369	$	45,911	$	147,118	$	126,721
Weighted average common shares outstanding	71,803		72,427		72,256		72,370
Basic earnings per common share	$	0.70	$	0.63	$	2.04	$	1.75
Diluted EPS:
Earnings allocated to common shareholders	$	50,369	$	45,911	$	147,118	$	126,721
Weighted average common shares outstanding	71,803		72,427		72,256		72,370
Dilutive effect of equity awards	—		5		1		4
Weighted average diluted common shares outstanding	71,803		72,432		72,257		72,374
Diluted earnings per common share	$	0.70	$	0.63	$	2.04	$	1.75
Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive	—		—		—		5

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Commitments and contingent liabilities

9 Months Ended

Sep. 30, 2019

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies Disclosure [Text Block]

Commitments and Contingent Liabilities

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, 2019 and December 31, 2018, the Company’s loan commitments amounted to $2.59 billion and $2.62 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 $26.9 million and $28.3 million at September 30, 2019 and December 31, 2018, respectively. In addition, there were $24 thousand commitments under commercial letters of credit used to facilitate customers’ trade transactions and other off-balance sheet liabilities at September 30, 2019 and none at December 31, 2018, 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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Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Tables)

9 Months Ended

Sep. 30, 2019

Financing Receivable, Allowance for Credit Loss [Line Items]

Allowance for Credit Losses on Financing Receivables

The following tables show a detailed analysis of the ALLL for the three and nine months ended September 30, 2019 and 2018:

	Beginning Balance		Charge-offs			Recoveries		Provision (Recapture)			Ending Balance		Specific Reserve		General Allocation
Three Months Ended September 30, 2019	(in thousands)
Commercial business:
Secured	$	37,862	$	(2,365	)	$	202	$	5,721		$	41,420	$	1,879	$	39,541
Unsecured	3,010		—			156		423			3,589		—		3,589
Real estate:
One-to-four family residential	645		—			65		(107		)	603		5		598
Commercial and multifamily residential:
Commercial land	5,409		—			79		560			6,048		320		5,728
Income property	5,325		—			104		35			5,464		—		5,464
Owner occupied	5,230		—			1		500			5,731		105		5,626
Real estate construction:
One-to-four family residential:
Land and acquisition	153		—			105		(124		)	134		—		134
Residential construction	6,103		—			2,366		(2,852		)	5,617		—		5,617
Commercial and multifamily residential:
Income property	4,198		—			—		(505		)	3,693		—		3,693
Owner occupied	2,412		—			—		595			3,007		—		3,007
Consumer	5,194		(285		)	326		(1,010		)	4,225		17		4,208
PCI	3,269		(722		)	1,812		(1,301		)	3,058		—		3,058
Unallocated	1,707		—			—		(1,636		)	71		—		71
Total	$	80,517	$	(3,372	)	$	5,216	$	299		$	82,660	$	2,326	$	80,334
	Beginning Balance		Charge-offs			Recoveries		Provision (Recapture)			Ending Balance		Specific Reserve		General Allocation
Nine Months Ended September 30, 2019	(in thousands)
Commercial business:
Secured	$	43,188	$	(7,717	)	$	1,040	$	4,909		$	41,420	$	1,879	$	39,541
Unsecured	2,626		(15		)	345		633			3,589		—		3,589
Real estate:
One-to-four family residential	593		(2		)	102		(90		)	603		5		598
Commercial and multifamily residential:
Commercial land	3,947		—			93		2,008			6,048		320		5,728
Income property	4,044		—			152		1,268			5,464		—		5,464
Owner occupied	4,533		—			3		1,195			5,731		105		5,626
Real estate construction:
One-to-four family residential:
Land and acquisition	549		—			236		(651		)	134		—		134
Residential construction	5,536		(170		)	2,956		(2,705		)	5,617		—		5,617
Commercial and multifamily residential:
Income property	5,784		—			1		(2,092		)	3,693		—		3,693
Owner occupied	2,604		—			—		403			3,007		—		3,007
Consumer	5,301		(1,117		)	742		(701		)	4,225		17		4,208
PCI	3,611		(2,626		)	3,389		(1,316		)	3,058		—		3,058
Unallocated	1,053		—			—		(982		)	71		—		71
Total	$	83,369	$	(11,647	)	$	9,059	$	1,879		$	82,660	$	2,326	$	80,334

	Beginning Balance		Charge-offs			Recoveries		Provision (Recapture)			Ending Balance		Specific Reserve		General Allocation
Three Months Ended September 30, 2018	(in thousands)
Commercial business:
Secured	$	40,350	$	(576	)	$	496	$	2,912		$	43,182	$	1,139	$	42,043
Unsecured	2,443		(30		)	51		(41		)	2,423		—		2,423
Real estate:
One-to-four family residential	461		—			21		(110		)	372		8		364
Commercial and multifamily residential:
Commercial land	3,278		—			8		(87		)	3,199		—		3,199
Income property	4,102		—			202		(292		)	4,012		1		4,011
Owner occupied	4,356		—			3		316			4,675		71		4,604
Real estate construction:
One-to-four family residential:
Land and acquisition	848		—			582		(742		)	688		—		688
Residential construction	4,572		—			1		660			5,233		—		5,233
Commercial and multifamily residential:
Income property	7,367		—			—		573			7,940		—		7,940
Owner occupied	2,299		—			—		138			2,437		—		2,437
Consumer	5,292		(277		)	266		(258		)	5,023		36		4,987
PCI	4,782		(1,208		)	945		(502		)	4,017		—		4,017
Unallocated	—		—			—		586			586		—		586
Total	$	80,150	$	(2,091	)	$	2,575	$	3,153		$	83,787	$	1,255	$	82,532
	Beginning Balance		Charge-offs			Recoveries		Provision (Recapture)			Ending Balance		Specific Reserve		General Allocation
Nine Months Ended September 30, 2018	(in thousands)
Commercial business:
Secured	$	29,341	$	(8,741	)	$	2,536	$	20,046		$	43,182	$	1,139	$	42,043
Unsecured	2,000		(117		)	356		184			2,423		—		2,423
Real estate:
One-to-four family residential	701		—			389		(718		)	372		8		364
Commercial and multifamily residential:
Commercial land	4,265		—			92		(1,158		)	3,199		—		3,199
Income property	5,672		(223		)	901		(2,338		)	4,012		1		4,011
Owner occupied	5,459		—			19		(803		)	4,675		71		4,604
Real estate construction:
One-to-four family residential:
Land and acquisition	963		—			610		(885		)	688		—		688
Residential construction	3,709		—			6		1,518			5,233		—		5,233
Commercial and multifamily residential:
Income property	7,053		—			—		887			7,940		—		7,940
Owner occupied	4,413		—			—		(1,976		)	2,437		—		2,437
Consumer	5,163		(773		)	796		(163		)	5,023		36		4,987
PCI	6,907		(3,786		)	3,096		(2,200		)	4,017		—		4,017
Unallocated	—		—			—		586			586		—		586
Total	$	75,646	$	(13,640	)	$	8,801	$	12,980		$	83,787	$	1,255	$	82,532

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,
	2019			2018		2019			2018
	(in thousands)
Balance at beginning of period	$	3,980		$	3,680	$	4,330		$	3,130
Net changes in the allowance for unfunded commitments and letters of credit	(400		)	275		(750		)	825
Balance at end of period	$	3,580		$	3,955	$	3,580		$	3,955

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, 2019 and December 31, 2018:

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
September 30, 2019	(in thousands)
Loans, excluding PCI loans:
Commercial business:
Secured	$	3,433,097	$	30,153	$	92,731	$	2	$	—	$	3,555,983
Unsecured	139,176		—		197		—		—		139,373
Real estate:
One-to-four family residential	272,021		—		1,012		—		—		273,033
Commercial and multifamily residential:
Commercial land	277,264		4,665		13,367		—		—		295,296
Income property	1,917,596		3,918		40,421		—		—		1,961,935
Owner occupied	1,642,558		8,278		47,472		—		—		1,698,308
Real estate construction:
One-to-four family residential:
Land and acquisition	1,614		—		—		—		—		1,614
Residential construction	192,563		—		—		—		—		192,563
Commercial and multifamily residential:
Income property	157,400		—		—		—		—		157,400
Owner occupied	102,246		—		—		—		—		102,246
Consumer	293,484		—		3,343		—		—		296,827
Total	$	8,429,019	$	47,014	$	198,543	$	2	$	—	8,674,578
Less:
ALLL											79,602
Loans, excluding PCI loans, net											$	8,594,976

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
December 31, 2018	(in thousands)
Loans, excluding PCI loans:
Commercial business:
Secured	$	3,160,910	$	48,779	$	103,007	$	5	$	—	$	3,312,701
Unsecured	112,091		21		—		5		—		112,117
Real estate:
One-to-four family residential	234,416		—		1,610		—		—		236,026
Commercial and multifamily residential:
Commercial land	276,348		5,082		4,247		—		—		285,677
Income property	1,876,925		36,998		6,553		—		—		1,920,476
Owner occupied	1,556,852		14,964		45,935		—		—		1,617,751
Real estate construction:
One-to-four family residential:
Land and acquisition	4,099		—		318		—		—		4,417
Residential construction	212,225		—		171		—		—		212,396
Commercial and multifamily residential:
Income property	194,912		—		—		—		—		194,912
Owner occupied	87,063		—		—		—		—		87,063
Consumer	313,817		—		4,398		—		—		318,215
Total	$	8,029,658	$	105,844	$	166,239	$	10	$	—	8,301,751
Less:
ALLL											79,758
Loans, excluding PCI loans, net											$	8,221,993

The following is an analysis of the credit quality of our PCI loan portfolio as of September 30, 2019 and December 31, 2018:

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
September 30, 2019	(in thousands)
PCI loans:
Commercial business:
Secured	$	7,008	$	955	$	721	$	—	$	—	$	8,684
Unsecured	550		—		—		—		—		550
Real estate:
One-to-four family residential	8,521		—		243		—		—		8,764
Commercial and multifamily residential:
Commercial land	8,920		642		72		—		—		9,634
Income property	18,737		—		—		—		—		18,737
Owner occupied	25,059		—		5,953		—		—		31,012
Real estate construction:
One-to-four family residential:
Land and acquisition	144		—		—		—		—		144
Commercial and multifamily residential:
Income property	462		—		—		—		—		462
Consumer	8,468		—		276		—		—		8,744
Total	$	77,869	$	1,597	$	7,265	$	—	$	—	86,731
Less:
Valuation discount resulting from acquisition accounting											4,954
ALLL											3,058
PCI loans, net											$	78,719

	Pass		Special Mention		Substandard		Doubtful		Loss		Total
December 31, 2018	(in thousands)
PCI loans:
Commercial business:
Secured	$	8,041	$	—	$	840	$	—	$	—	$	8,881
Unsecured	692		—		99		—		—		791
Real estate:
One-to-four family residential	9,633		—		215		—		—		9,848
Commercial and multifamily residential:
Commercial land	10,363		—		—		—		—		10,363
Income property	19,680		—		—		—		—		19,680
Owner occupied	35,944		—		353		—		—		36,297
Real estate construction:
One-to-four family residential:
Land and acquisition	151		—		2		—		—		153
Commercial and multifamily residential:
Income property	507		—		—		—		—		507
Consumer	9,326		—		439		—		—		9,765
Total	$	94,337	$	—	$	1,948	$	—	$	—	96,285
Less:
Valuation discount resulting from acquisition accounting											6,525
ALLL											3,611
PCI loans, net											$	86,149