10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

[X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2018

OR

[   ] 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 000-26584

BANNER CORPORATION

(Exact name of registrant as specified in its charter)

Washington		91-1691604
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification Number)
	10 South First Avenue, Walla Walla, Washington 99362
	(Address of principal executive offices and zip code)
	Registrant's telephone number, including area code:  (509) 527-3636

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 and posted on its corporate website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).
					Yes	[x]	No	[  ]
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, 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  [x]	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]
APPLICABLE ONLY TO CORPORATE ISSUERS
Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.
Title of class:			As of April 30, 2018
Common Stock, $.01 par value per share			32,331,108 shares
Non-voting Common Stock, $.01 par value per share			76,928 shares

1

BANNER CORPORATION AND SUBSIDIARIES

Table of Contents

PART I – FINANCIAL INFORMATION
Item 1 – Financial Statements.  The Unaudited Condensed Consolidated Financial Statements of Banner Corporation and Subsidiaries filed as a part of the report are as follows:
Consolidated Statements of Financial Condition as of March 31, 2018 and December 31, 2017	4
Consolidated Statements of Operations for the Three Months Ended March 31, 2018 and 2017	5
Consolidated Statements of Comprehensive Income for the Three Months Ended March 31, 2018 and 2017	6
Consolidated Statements of Changes in Shareholders’ Equity for the Three Months Ended March 31, 2018 and the Year Ended December 31, 2017	7
Consolidated Statements of Cash Flows for the Three Months Ended March 31, 2018 and 2017	8
Selected Notes to the Consolidated Financial Statements	10
Item 2 – Management's Discussion and Analysis of Financial Condition and Results of Operations
Executive Overview	43
Comparison of Financial Condition at March 31, 2018 and December 31, 2017	50
Comparison of Results of Operations for the Three Months Ended March 31, 2018 and 2017	53
Asset Quality	58
Liquidity and Capital Resources	60
Capital Requirements	61
Item 3 – Quantitative and Qualitative Disclosures About Market Risk
Market Risk and Asset/Liability Management	62
Sensitivity Analysis	62
Item 4 – Controls and Procedures	67
PART II – OTHER INFORMATION
Item 1 – Legal Proceedings	68
Item 1A – Risk Factors	68
Item 2 – Unregistered Sales of Equity Securities and Use of Proceeds	68
Item 3 – Defaults upon Senior Securities	68
Item 4 – Mine Safety Disclosures	68
Item 5 – Other Information	68
Item 6 – Exhibits	69
SIGNATURES	70

2

Special Note Regarding Forward-Looking Statements

Certain matters in this Form 10-Q constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995.  These statements relate to our financial condition, liquidity, results of operations, plans, objectives, future performance or business.  Forward-looking statements are not statements of historical fact, are based on certain assumptions and are generally identified by use of the words “believes,” “expects,” “anticipates,” “estimates,” “forecasts,” “intends,” “plans,” “targets,” “potentially,” “probably,” “projects,” “outlook” or similar expressions or future or conditional verbs such as “may,” “will,” “should,” “would” and “could.”  Forward-looking statements include statements with respect to our beliefs, plans, objectives, goals, expectations, assumptions and statements about future economic performance and projections of financial items.  These forward-looking statements are subject to known and unknown risks, uncertainties and other factors that could cause actual results to differ materially from the results anticipated or implied by our forward-looking statements, including, but not limited to: the credit risks of lending activities, including changes in the level and trend of loan delinquencies and write-offs and changes in our allowance for loan losses and provision for loan losses that may be impacted by deterioration in the housing and commercial real estate markets and may lead to increased losses and non-performing assets, and may result in our allowance for loan losses not being adequate to cover actual losses and require us to materially increase our reserves; changes in economic conditions in general and in Washington, Idaho, Oregon and California in particular; changes in the levels of general interest rates and the relative differences between short and long-term interest rates, loan and deposit interest rates, our net interest margin and funding sources; fluctuations in the demand for loans, the number of unsold homes, land and other properties and fluctuations in real estate values in our market areas; secondary market conditions for loans and our ability to sell loans in the secondary market; results of safety and soundness and compliance examinations of us by the Board of Governors of the Federal Reserve System and of our bank subsidiaries by the Federal Deposit Insurance Corporation (the FDIC), the Washington State Department of Financial Institutions, Division of Banks (the Washington DFI) or other regulatory authorities, including the possibility that any such regulatory authority may, among other things, require restitution or institute an informal or formal enforcement action against us or any of our bank subsidiaries which could require us to increase our reserve for loan losses, write-down assets, change our regulatory capital position or affect our ability to borrow funds, or maintain or increase deposits, or impose additional requirements and restrictions on us, any of which could adversely affect our liquidity and earnings; legislative or regulatory changes that adversely affect our business including changes in regulatory policies and principles, or the interpretation of regulatory capital or other rules, including changes related to Basel III; the impact of the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 and the implementing regulations; our ability to attract and retain deposits; increases in premiums for deposit insurance; our ability to control operating costs and expenses; the use of estimates in determining fair value of certain of our assets and liabilities, which estimates may prove to be incorrect and result in significant changes in valuation; difficulties in reducing risk associated with the loans and securities on our balance sheet; staffing fluctuations in response to product demand or the implementation of corporate strategies that affect our work force and potential associated charges; disruptions, security breaches, or other adverse events, failures or interruptions in, or attacks on, our information technology systems or on the third-party vendors who perform several of our critical processing functions; our ability to retain key members of our senior management team; costs and effects of litigation, including settlements and judgments; our ability to implement our business strategies; future goodwill impairment due to changes in our business, changes in market conditions, or other factors; our ability to manage loan delinquency rates; increased competitive pressures among financial services companies; changes in consumer spending, borrowing and savings habits; the availability of resources to address changes in laws, rules, or regulations or to respond to regulatory actions; our ability to pay dividends on our common stock and non-voting common stock, and interest or principal payments on our junior subordinated debentures; adverse changes in the securities markets; inability of key third-party providers to perform their obligations to us; changes in accounting policies and practices, as may be adopted by the financial institution regulatory agencies or the Financial Accounting Standards Board including additional guidance and interpretation on accounting issues and details of the implementation of new accounting methods; the economic impact of war or any terrorist activities; other economic, competitive, governmental, regulatory, and technological factors affecting our operations, pricing, products and services; and other risks detailed from time to time in our filings with the U.S. Securities and Exchange Commission (SEC), including this report on Form 10-Q.  Any forward-looking statements are based upon management’s beliefs and assumptions at the time they are made.  We do not undertake and specifically disclaim any obligation to update any forward-looking statements included in this report or the reasons why actual results could differ from those contained in such statements, whether as a result of new information, future events or otherwise.  These risks could cause our actual results to differ materially from those expressed in any forward-looking statements by, or on behalf of, us.  In light of these risks, uncertainties and assumptions, the forward-looking statements discussed in this report might not occur, and you should not put undue reliance on any forward-looking statements.

As used throughout this report, the terms “we,” “our,” “us,” or the “Company” refer to Banner Corporation and its consolidated subsidiaries, unless the context otherwise requires.  All references to “Banner” refer to Banner Corporation and those to “the Banks” refer to its wholly-owned subsidiaries, Banner Bank and Islanders Bank, collectively.

3

BANNER CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION

(Unaudited) (In thousands, except shares)

March 31, 2018 and December 31, 2017

ASSETS	March 31 2018			December 31 2017
Cash and due from banks	$	188,418		$	199,624
Interest bearing deposits	53,630			61,576
Total cash and cash equivalents	242,048			261,200
Securities—trading, amortized cost $27,275 and $27,246, respectively	25,574			22,318
Securities—available-for-sale, amortized cost $1,427,764 and $926,112, respectively	1,406,505			919,485
Securities—held-to-maturity, fair value $260,918 and $262,188, respectively	262,645			260,271
Federal Home Loan Bank (FHLB) stock	18,036			10,334
Loans held for sale (includes $137.7 million and $32.4 million, at fair value, respectively)	141,808			40,725
Loans receivable	7,556,046			7,598,884
Allowance for loan losses	(92,207		)	(89,028		)
Net loans	7,463,839			7,509,856
Accrued interest receivable	32,824			31,259
Real estate owned (REO), held for sale, net	328			360
Property and equipment, net	156,005			154,815
Goodwill	242,659			242,659
Other intangibles, net	21,251			22,655
Bank-owned life insurance (BOLI)	163,519			162,668
Deferred tax assets, net	76,843			71,427
Other assets	63,380			53,177
Total assets	$	10,317,264		$	9,763,209
LIABILITIES
Deposits:
Non-interest-bearing	$	3,383,439		$	3,265,544
Interest-bearing transaction and savings accounts	4,141,268			3,950,950
Interest-bearing certificates	1,018,355			966,937
Total deposits	8,543,062			8,183,431
Advances from FHLB	192,195			202
Other borrowings	101,844			95,860
Junior subordinated debentures at fair value (issued in connection with Trust Preferred Securities)	112,516			98,707
Accrued expenses and other liabilities	72,497			71,344
Deferred compensation	41,027			41,039
Total liabilities	9,063,141			8,490,583
COMMITMENTS AND CONTINGENCIES (Note 12)
SHAREHOLDERS’ EQUITY
Preferred stock - $0.01 par value per share, 500,000 shares authorized; no shares outstanding at March 31, 2018 and December 31, 2017	—			—
Common stock and paid in capital - $0.01 par value per share, 50,000,000 shares authorized; 32,346,745 shares issued and outstanding at March 31, 2018; 32,626,456 shares issued and outstanding at December 31, 2017	1,171,914			1,185,919
Common stock (non-voting) and paid in capital- $0.01 par value per share, 5,000,000 shares authorized; 76,928 shares issued and outstanding at March 31, 2018; 100,029 shares issued and outstanding at December 31, 2017	1,046			1,208
Retained earnings	79,773			90,535
Carrying value of shares held in trust for stock related compensation plans	(7,371		)	(7,351		)
Liability for common stock issued to stock related compensation plans	7,371			7,351
Accumulated other comprehensive income (loss) (AOCI)	1,390			(5,036		)
Total shareholders' equity	1,254,123			1,272,626
Total liabilities & shareholders' equity	$	10,317,264		$	9,763,209

See Selected Notes to the Consolidated Financial Statements

4

BANNER CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited) (In thousands, except shares and per share amounts)

For the Three Months Ended March 31, 2018 and 2017

	Three Months Ended March 31,
	2018			2017
INTEREST INCOME:
Loans receivable	$	94,022		$	91,288
Mortgage-backed securities	7,331			4,647
Securities and cash equivalents	3,467			3,161
Total interest income	104,820			99,096
INTEREST EXPENSE:
Deposits	3,358			2,791
FHLB advances	677			273
Other borrowings	70			74
Junior subordinated debentures	1,342			1,104
Total interest expense	5,447			4,242
Net interest income	99,373			94,854
PROVISION FOR LOAN LOSSES	2,000			2,000
Net interest income after provision for loan losses	97,373			92,854
NON-INTEREST INCOME:
Deposit fees and other service charges	11,296			10,389
Mortgage banking operations	4,864			4,603
Bank-owned life insurance (BOLI)	853			1,095
Miscellaneous	1,037			3,636
	18,050			19,723
Net gain on sale of securities	4			13
Net change in valuation of financial instruments carried at fair value	3,308			(688		)
Total non-interest income	21,362			19,048
NON-INTEREST EXPENSE:
Salary and employee benefits	50,067			46,063
Less capitalized loan origination costs	(4,011		)	(4,316		)
Occupancy and equipment	11,766			11,996
Information/computer data services	4,381			3,994
Payment and card processing expenses	3,700			3,223
Professional services	4,428			5,152
Advertising and marketing	1,830			1,328
Deposit insurance	1,341			1,266
State/municipal business and use taxes	713			799
REO operations	439			(966		)
Amortization of core deposit intangibles	1,382			1,624
Miscellaneous	5,670			6,118
Total non-interest expense	81,706			76,281
Income before provision for income taxes	37,029			35,621
PROVISION FOR INCOME TAXES	8,239			11,828
NET INCOME	$	28,790		$	23,793
Earnings per common share:
Basic	$	0.89		$	0.72
Diluted	$	0.89		$	0.72
Cumulative dividends declared per common share	$	0.35		$	0.25
Weighted average number of common shares outstanding:
Basic	32,397,568			32,933,444
Diluted	32,516,456			33,051,459

See Selected Notes to the Consolidated Financial Statements

5

BANNER CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited) (In thousands)

For the Three Months Ended March 31, 2018 and 2017

	Three Months Ended March 31,
	2018			2017
NET INCOME	$	28,790		$	23,793
OTHER COMPREHENSIVE (LOSS) INCOME, NET OF INCOME TAXES:
Unrealized holding (loss) gain on available-for-sale securities arising during the period	(14,768		)	2,448
Reclassification for net gains on available-for-sale securities realized in earnings	(2		)	(13		)
Changes in fair value of junior subordinated debentures related to instrument specific credit risk	(13,809		)	—
Income tax related to other comprehensive (loss) income	6,802			(876		)
Other comprehensive (loss) income	(21,777		)	1,559
COMPREHENSIVE INCOME	$	7,013		$	25,352

See Selected Notes to the Consolidated Financial Statements

6

BANNER CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY

(Unaudited) (In thousands, except shares)

For the Three Months EndedMarch 31, 2018 and the Year Ended December 31, 2017

	Common Stock and Paid in Capital					Retained Earnings			Accumulated Other Comprehensive Income (Loss)			Shareholders’ Equity
	Shares		Amount
Balance, January 1, 2017	33,193,387		$	1,213,837		$	95,328		$	(3,455	)	$	1,305,710
Net income						60,776						60,776
Other comprehensive loss, net of income tax									(786		)	(786		)
Reclassification of stranded tax effects from AOCI to retained earnings						795			(795		)	—
Accrual of dividends on common stock ($2.00/share cumulative)						(66,364		)				(66,364		)
Repurchase of common stock	(545,166	)	(31,045		)							(31,045		)
Amortization of stock-based compensation related to restricted stock grants, net of shares surrendered	78,264		4,335									4,335
Balance, December 31, 2017	32,726,485		$	1,187,127		$	90,535		$	(5,036	)	$	1,272,626

Balance, January 1, 2018	32,726,485		$	1,187,127		$	90,535		$	(5,036	)	$	1,272,626
Cumulative effect of reclassification of the instrument-specific credit risk portion of junior subordinated debentures fair value adjustments and reclassification of equity securities from available-for-sale.						(28,203		)	28,203			—
Net income						28,790						28,790
Other comprehensive loss, net of income tax									(21,777		)	(21,777		)
Accrual of dividends on common stock ($0.35/share cumulative)						(11,349		)				(11,349		)
Repurchase of common stock	(269,711	)	(15,359		)							(15,359		)
Amortization of stock-based compensation related to restricted stock grants, net of shares surrendered	(33,101	)	1,192									1,192
Balance, March 31, 2018	32,423,673		$	1,172,960		$	79,773		$	1,390		$	1,254,123

See Selected Notes to the Consolidated Financial Statements

7

BANNER CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited) (In thousands)

For the Three Months EndedMarch 31, 2018 and 2017

	Three Months Ended March 31,
	2018			2017
OPERATING ACTIVITIES:
Net income	$	28,790		$	23,793
Adjustments to reconcile net income to net cash provided from operating activities:
Depreciation	3,584			2,888
Deferred income and expense, net of amortization	(608		)	(265		)
Amortization of core deposit intangibles	1,382			1,624
Gain on sale of securities	(4		)	(13		)
Net change in valuation of financial instruments carried at fair value	(3,308		)	688
Principal repayments and maturities of securities—trading	—			9
(Increase) decrease in deferred taxes	(5,416		)	3,625
Increase in current taxes payable	6,569			295
Stock-based compensation	1,320			1,125
Increase in cash surrender value of BOLI	(844		)	(1,085		)
Gain on sale of loans, net of capitalized servicing rights	(3,375		)	(5,496		)
Loss (gain) on disposal of real estate held for sale and property and equipment	58			(1,039		)
Provision for loan losses	2,000			2,000
Provision for losses on real estate held for sale	160			50
Origination of loans held for sale	(222,168		)	(167,550		)
Proceeds from sales of loans held for sale	124,460			339,878
Net change in:
Other assets	(5,100		)	(9,412		)
Other liabilities	(2,311		)	(5,283		)
Net cash (used in) provided from operating activities	(74,811		)	185,832
INVESTING ACTIVITIES:
Purchases of securities—available-for-sale	(537,864		)	(457,966		)
Principal repayments and maturities of securities—available-for-sale	28,839			32,446
Proceeds from sales of securities—available-for-sale	—			2,165
Purchases of securities—held-to-maturity	(5,312		)	—
Principal repayments and maturities of securities—held-to-maturity	2,358			954
Loan originations, net of principal repayments	40,846			119,569
Purchases of loans and participating interest in loans	(8,103		)	(99,206		)
Proceeds from sales of other loans	13,241			4,627
Purchases of property and equipment	(5,024		)	(3,598		)
Proceeds from sale of real estate held for sale and sale of other property, net	192			13,684
Proceeds from FHLB stock repurchase program	32,558			29,192
Purchase of FHLB stock	(40,260		)	(27,020		)
Other	228			75
Net cash used in investing activities	(478,301		)	(385,078		)
FINANCING ACTIVITIES:
Increase in deposits, net	359,631			300,546
Repayment of long term FHLB advances	(2		)	(2		)
Proceeds from (repayments of) overnight and short term FHLB advances, net	192,000			(54,000		)
Increase in other borrowings, net	5,984			14,560
Cash dividends paid	(8,165		)	(7,615		)
Taxes paid related to net share settlement of equity awards	(129		)	(445		)
Cash paid for the repurchase of common stock	(15,359		)	(809		)
Net cash provided from financing activities	533,960			252,235
NET CHANGE IN CASH AND CASH EQUIVALENTS	(19,152		)	52,989
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	261,200			247,719
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	242,048		$	300,708

(Continued on next page)

8

BANNER CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS (continued)

(Unaudited) (In thousands)

For the Three Months EndedMarch 31, 2018 and 2017

	Three Months Ended March 31,
	2018			2017
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Interest paid in cash	$	5,185		$	4,202
(Refunds received) taxes paid, net	(3		)	8,543
NON-CASH INVESTING AND FINANCING TRANSACTIONS:
Loans, net of discounts, specific loss allowances and unearned income, transferred to real estate owned and other repossessed assets	976			—
Dividends accrued but not paid until after period end	11,450			8,338

See Selected Notes to the Consolidated Financial Statements

9

BANNER CORPORATION AND SUBSIDIARIES

SELECTED NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Note 1:  BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

The accompanying unaudited condensed consolidated financial statements include the accounts of Banner Corporation (the Company or Banner), a bank holding company incorporated in the State of Washington and its wholly-owned subsidiaries, Banner Bank and Islanders Bank (the Banks).

These unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (GAAP) for interim financial information and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X as promulgated by the Securities and Exchange Commission (SEC). In preparing these financial statements, the Company has evaluated events and transactions subsequent to March 31, 2018 for potential recognition or disclosure. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of the financial position and results of operations for the periods presented have been included. Certain information and disclosures normally included in annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to the rules and regulations of the SEC and the accounting standards for interim financial statements. Certain reclassifications have been made to the 2017 Consolidated Financial Statements and/or schedules to conform to the 2018 presentation. These reclassifications may have affected certain ratios for the prior periods. The effect of these reclassifications is considered immaterial. All significant intercompany transactions and balances have been eliminated.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect amounts reported in the financial statements. Various elements of the Company’s accounting policies, by their nature, are inherently subject to estimation techniques, valuation assumptions and other subjective assessments. In particular, management has identified several accounting policies that, due to the judgments, estimates and assumptions inherent in those policies, are significant to an understanding of Banner’s financial statements. These policies relate to (i) the methodology for the recognition of interest income, (ii) determination of the provision and allowance for loan losses, (iii) the valuation of financial assets and liabilities recorded at fair value, including other-than-temporary impairment (OTTI) losses, (iv) the valuation of intangibles, such as goodwill, core deposit intangibles (CDI) and mortgage servicing rights, (v) the valuation of real estate held for sale, (vi) the valuation of assets and liabilities acquired in business combinations and subsequent recognition of related income and expense, and (vii) the valuation or recognition of deferred tax assets and liabilities. These policies and judgments, estimates and assumptions are described in greater detail in subsequent notes to the Consolidated Financial Statements and Management’s Discussion and Analysis of Financial Condition and Results of Operations (Critical Accounting Policies) in our Annual Report on Form 10-K for the year ended December 31, 2017 filed with the SEC (2017 Form 10-K).  There have been no significant changes in our application of these accounting policies during the first three months of 2018, except as described in Note 2.

The information included in this Form 10-Q should be read in conjunction with our 2017 Form 10-K.  Interim results are not necessarily indicative of results for a full year or any other interim period.

Note 2:  ACCOUNTING STANDARDS RECENTLY ISSUED OR ADOPTED

Revenue from Contracts with Customers

In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2014-09, Revenue from Contracts with Customers, which creates Topic 606 and supersedes Topic 605, Revenue Recognition. Subsequent to the issuance of ASU 2014-09, FASB issued ASU 2016-10 in April 2016 and issued ASU 2016-12 in May 2016. Both of these ASUs amend or clarify aspects of Topic 606. The core principle of Topic 606 is that anentity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to whichthe entity expects to be entitled in exchange for those goods or services. In general, the new guidance requires companies to use more judgmentand make more estimates than under current guidance, including identifying performance obligations in the contract, estimating the amount ofvariable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. The Company adopted Topic 606 on January 1, 2018 using the full retrospective method, meaning the standard is applied to all periods presented in the financial statements with the cumulative effect of initially applying the standard recognized at the beginning of the earliest period presented. In adopting Topic 606, the Company applied the following five steps in determining the correct treatment for the applicable revenue streams:

1. Identify the contract with a customer;

2. Identify the performance obligations in the contract;

3. Determine the transaction price;

4. Allocate the transaction price to performance obligations in the contract, and

5. Recognize revenue when or as the Company satisfies the performance obligation.

The majority of the Company’s revenue streams including interest income, deferred loan fee accretion, premium/discount accretion, gains on sales of loans and investments, loan servicing income and other loan fee income are outside the scope of Topic 606. Revenue streams reported as deposit fees and other service charges which include transaction based deposit fees, non-transaction based deposit fees, interchange fees on credit and debit cards and merchant service fees are within the scope of Topic 606. The Company applied the requirements of Topic 606 to the revenue streams that are within its scope. The adoption of Topic 606 did not result in any changes in the either timing or amount of recognized

10

revenue in prior periods by the Company however, the presentation of certain costs associated with our merchant services will now be offset against deposit fees and other service charges in non-interest income. The Company previously recognized payment network related fees that were collected by Company and passed through to another party related to its merchant services as non-interest expense. The change in presentation resulted in $1.8 million of expenses for the three months ended March 31, 2018 being netted against deposit fees and other services charges and reported in non-interest income instead of as payment and card processing expenses in non-interest expense. In addition, to conform to the current period presentation, $1.8 million of merchant services related expenses for the three months ended March 31, 2017 were reclassified from payment and card processing expense in non-interest expense to being netted against deposit fees and other service charges in non-interest income. The Company elected to apply the practical expedient and therefore does not disclose information about remaining performance obligations that have an original expected term of one year or less and allows the Company to expense costs related to obtaining a contract as incurred when the amortization period would have been one year or less.

The following table presents the impact of adopting of the new revenue standard on our Consolidated Statements of Operations for the three months ended March 31, 2018 and 2017 (in thousands):

	For the three months ended March 31, 2018							For the three months ended March 31, 2017
	As Reported		Balance without Adoption of ASC 606		Effect of Change			As Reported		Balance without Adoption of ASC 606		Effect of Change
Non-interest income:
Deposit fees and other service charges	$	11,296	$	13,100	$	(1,804	)	$	10,389	$	12,186	$	(1,797	)
Non-interest expense:
Payment and card processing expenses	$	3,700	$	5,504	$	(1,804	)	$	3,223	$	5,020	$	(1,797	)

Recognition and Measurement of Financial Assets and Financial Liabilities

In January 2016, FASB issued ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities. The amendments in this ASU require equity securities to be measured at fair value with changes in the fair value recognized through net income. The amendments allow equity investments that do not have readily determinable fair values to be remeasured at fair value under certain circumstances and require enhanced disclosures about those investments. This ASU simplifies the impairment assessment of equity investments without readily determinable fair values. This ASU also eliminates the requirement to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet. The amendments in this ASU require separate presentation in other comprehensive income of the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. This ASU excludes from net income gains or losses that the entity may not realize because those financial liabilities are not usually transferred or settled at their fair values before maturity. The amendments in this ASU require separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (that is, securities or loans and receivables) on the balance sheet or in the accompanying notes to the financial statements. The Company adopted this ASU on January 1, 2018. The adoption of this ASU resulted in the Company reclassifying $28.1 million from retained earnings to AOCI for the cumulative fair value adjustments on its junior subordinated debentures related to instrument specific credit risk. During the quarter end March 31, 2018, the Company recorded a $10.5 million, net of tax, reduction in other comprehensive income (loss) for the change in instrument specific credit risk on its junior subordinated debentures; prior to the adoption of this ASU this amount would have been recorded in the Consolidated Statement of Operations. In addition, as a result of adopting this ASU the Company recorded a $137,000 reduction in retained earnings representing the unrealized loss on available for sale equity securities at the date of adoption. Any future changes in fair value on equity securities will be recorded in the Consolidated Statement of Operations. During the quarter ended March 31, 2018, the Company recorded a $70,000 loss for the decrease in fair value of its equity securities as a component of the net change in financial instruments carried at fair value in the Consolidated Statement of Operations. At March 31, 2018, the Company held $5.7 million of equity investment securities which were previously reported as available for sale securities and are now reported in other assets.

In addition, the adoption of this ASU resulted in changing how the Company estimates the fair value portfolio loans for disclosure purposes. Fair values are estimated first by stratifying the portfolios of loans with similar financial characteristics.  Loans are segregated by type such as multifamily real estate, residential mortgage, nonresidential mortgage, commercial/agricultural, consumer and other.  Each loan category is further segmented into fixed- and adjustable-rate interest terms. An estimate of fair value is then calculated based on discounted cash flows using as a discount rate the current rate offered on similar products, plus an adjustment for liquidity to reflect the non-homogeneous nature of the loans, as well as, a quarterly loss rate based on historical losses to arrive at an estimated exit price fair value. Fair value for impaired loans is also based on recent appraisals or estimated cash flows discounted using rates commensurate with risk associated with the estimated cash

11

flows.  Assumptions regarding credit risk, cash flows and discount rates are judgmentally determined using available market information and specific borrower information.

In February 2018, FASB issued ASU No. 2018-03, Technical Corrections and Improvements to Financial Instruments—Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. The amendments in this ASU do not change the core principle of the guidance in Subtopic 825-10. Rather, the amendments in this ASU clarify the application of the guidance regarding the fair value measurement of equity securities without readily determinable fair value. The Company adopted this ASU on January 1, 2018. The impact of the Company's adoption of this ASU is described in the preceding paragraph.

Leases (Topic 842)

In February 2016, FASB issued ASU No. 2016-02, Leases (Topic 842). The amendments in this ASU require lessees to recognize the following for all leases (with the exception of short-term) at the commencement date; a lease liability, which is a lessee‘s obligation to make lease payments arising from a lease, measured on a discounted basis; and a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. The amendments in this ASU leave lessor accounting largely unchanged, although certain targeted improvements were made to align lessor accounting with the lessee accounting model. This ASU simplifies the accounting for sale and leaseback transactions primarily because lessees must recognize lease assets and lease liabilities. Lessees will no longer be provided with a source of off-balance sheet financing. The amendments in this ASU are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early application is permitted upon issuance. Lessees (for capital and operating leases) and lessors (for sales-type, direct financing, and operating leases) must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The modified retrospective approach would not require any transition accounting for leases that expired before the earliest comparative period presented. Lessees and lessors may not apply a full retrospective transition approach. The Company is currently evaluating the provisions of ASU No. 2016-02 to determine the potential impact the new standard will have on the Company's Consolidated Financial Statements and regulatory capital ratios and has contracted with a third party software solution to meet the new requirements of this ASU, with implementation currently in process. The Company leases 107 buildings and offices under non-cancelable operating leases, the majority of which will be subject to this ASU. While the Company has not quantified the impact to its balance sheet, upon the adoption of this ASU the Company expects to report increased assets and increased liabilities on its Consolidated Statements of Financial Condition as a result of recognizing right-of-use assets and lease liabilities related to these leases and certain equipment under non-cancelable operating lease agreements, which currently are not reflected in its Consolidated Statements of Financial Condition.

Financial Instruments—Credit Losses (Topic 326)

In June 2016, FASB issued ASU No. 2016-13, Measurement of Credit Losses on Financial Instruments. Current GAAP requires an “incurred loss” methodology for recognizing credit losses that delays recognition until it is probable a loss has been incurred. The main objective of this ASU is to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. The ASU affects loans, debt securities, trade receivables, net investments in leases, off-balance-sheet credit exposures, reinsurance receivables, and any other financial asset not excluded from the scope that have the contractual right to receive cash. The ASU replaces the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. This ASU requires a financial asset (or group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. The measurement of expected credit losses will be based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. This ASU broadens the information that an entity must consider in developing its expected credit loss estimate for assets measured either collectively or individually. The use of forecasted information incorporates more timely information in the estimate of expected credit loss, which will be more decision useful to users of the financial statements. This ASU will be effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The Company is still evaluating the effects this ASU will have on the Company’s Consolidated Financial Statements. The Company has formed an internal committee to oversee the project, engaged a third-party vendor to assist with the project and has completed its gap analysis phase of the project. In addition, the Company is in the process of selecting a second third-party vendor to assist with building and developing the required models. Upon adoption, the Company expects changes in the processes and procedures used to calculate the allowance for loan losses, including changes in assumptions and estimates to consider expected credit losses over the life of the loan versus the current accounting practice that utilizes the incurred loss model. The new guidance may result in an increase in the allowance for loan losses which will also reflect the new requirement to include the nonaccretable principal differences on purchased credit-impaired loans; however, the Company is still in the process of determining the magnitude of the change and its impact on the Consolidated Financial Statements. In addition, the current accounting policy and procedures for other-than-temporary impairment on investment securities available-for-sale will be replaced with an allowance approach.

Receivables—Nonrefundable Fees and Other Costs (Subtopic 310-20)

In March 2017, FASB issued ASU No. 2017-08, Premium Amortization on Purchased Callable Debt Securities. The amendments in this ASU shorten the premium amortization period for callable debt securities purchased at a premium. Specifically, the amendments require the premium to be amortized to the earliest call date. Under current GAAP, premiums and discounts on callable debt securities generally are amortized to the maturity date. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to the maturity date. The amendments in this ASU more closely align the amortization period of premiums and discounts to expectations incorporated in market pricing on the underlying securities. The amendments in this ASU are effective for fiscal years beginning after December

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15, 2018, and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. The Company is still evaluating the effects this ASU will have on the Company’s Consolidated Financial Statements.

Derivatives and Hedging (Topic 815)

In August 2017, FASB issued ASU No. 2017-12, Targeted Improvements to Accounting for Hedging Activities. The amendments in this ASU are intended to provide investors better insight to an entity's risk management hedging strategies by permitting a company to recognize the economic results of its hedging strategies in its financial statements. The amendments in this ASU permit hedge accounting for hedging relationships involving nonfinancial risk and interest rate risk by removing certain limitations in cash flow and fair value hedging relationships. In addition, the ASU requires an entity to present the earnings effect of the hedging instrument in the same income statement line item in which the earnings effect of the hedged item is reported. This ASU is effective for fiscal years beginning after December 15, 2018, and early adoption is permitted. Adoption of ASU 2017-12 is not expected to have a material impact on the Company's Consolidated Financial Statements.

Income Statement - Reporting Comprehensive Income (Topic 220)

In February 2018, FASB Issued ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. This ASU allows a reclassification from AOCI to retained earnings for the stranded tax effects on available-for-sale securities resulting from the 2017 Tax Act. The ASU eliminates the stranded tax effects resulting from the 2017 Tax Act and improves the usefulness of information reported to financial statement users. The ASU also requires certain disclosures about the stranded tax effects. This ASU is effective for all entities for fiscal years beginning after December 15, 2018. Early adoption is permitted, including adoption in any interim period, for reporting periods for which financial statements have not yet been issued. The ASU should be applied to either in the period of adoption or retrospectively to each period in which the effect of the change in the federal corporate tax rate is recognized. The Company elected to early adopt this ASU and to reclassify $795,000 of stranded tax effects from AOCI to retained earnings in the fourth quarter of 2017.

Income Taxes (Topic 740)

In March 2018, FASB issued ASU No. 2018-05, Income Taxes (Topic 740). This ASU was issued to provide guidance on the income tax accounting implications of the Tax Cuts and Jobs Act (the Act) and allows for entities to report provisional amounts for specific income tax effects of the Act for which the accounting under ASC Topic 740 was not yet complete but a reasonable estimate could be determined. A measurement period of one year is allowed to complete the accounting effects under ASC Topic 740 and revise any previous estimates reported. Any provisional amounts or subsequent adjustments included in an entity’s financial statements during the measurement period should be included in income from continuing operations as an adjustment to tax expense in the reporting period the amounts are determined. The Company adopted this ASU with the provisional adjustments as reported in the Consolidated Financial Statements in the 2017 Form 10-K. As of March 31, 2018, the Company did not incur any adjustments to the provisional recognition.

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Note 3:  SECURITIES

The amortized cost, gross unrealized gains and losses and estimated fair value of securities at March 31, 2018 and December 31, 2017 are summarized as follows (in thousands):

	March 31, 2018
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Trading:
Municipal bonds	$	100						$	100
Corporate bonds	27,175							25,474
	$	27,275						$	25,574
Available-for-Sale:
U.S. Government and agency obligations	$	145,280	$	10	$	(1,984	)	$	143,306
Municipal bonds	69,516		315		(873		)	68,958
Corporate bonds	6,152		5		(45		)	6,112
Mortgage-backed or related securities	1,179,084		718		(19,389		)	1,160,413
Asset-backed securities	27,732		128		(144		)	27,716
	$	1,427,764	$	1,176	$	(22,435	)	$	1,406,505
Held-to-Maturity:
U.S. Government and agency obligations	$	1,260	$	27	$	—		$	1,287
Municipal bonds:	192,931		2,334		(2,644		)	192,621
Corporate bonds	3,941		—		(8		)	3,933
Mortgage-backed or related securities	64,513		19		(1,455		)	63,077
	$	262,645	$	2,380	$	(4,107	)	$	260,918

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	December 31, 2017
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Trading:
Municipal bonds	$	100						$	100
Corporate bonds	27,132							22,058
Equity securities	14							160
	$	27,246						$	22,318
Available-for-Sale:
U.S. Government and agency obligations	$	72,829	$	68	$	(431	)	$	72,466
Municipal bonds	68,513		665		(445		)	68,733
Corporate bonds	5,431		6		(44		)	5,393
Mortgage-backed or related securities	745,956		1,003		(7,402		)	739,557
Asset-backed securities	27,667		184		(93		)	27,758
Equity securities	5,716		10		(148		)	5,578
	$	926,112	$	1,936	$	(8,563	)	$	919,485
Held-to-Maturity:
U.S. Government and agency obligations	$	1,024	$	29	$	—		$	1,053
Municipal bonds:	189,860		3,385		(1,252		)	191,993
Corporate bonds	3,978		7		—			3,985
Mortgage-backed or related securities	65,409		266		(518		)	65,157
	$	260,271	$	3,687	$	(1,770	)	$	262,188

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At March 31, 2018 and December 31, 2017, the gross unrealized losses and the fair value for securities available-for-sale and held-to-maturity aggregated by the length of time that individual securities have been in a continuous unrealized loss position was as follows (in thousands):

	March 31, 2018
	Less Than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Available-for-Sale:
U.S. Government and agency obligations	$	112,704	$	(1,479	)	$	22,943	$	(505	)	$	135,647	$	(1,984	)
Municipal bonds	30,019		(463		)	13,065		(410		)	43,084		(873		)
Corporate bonds	647		(7		)	4,550		(38		)	5,197		(45		)
Mortgage-backed or related securities	835,758		(15,250		)	114,653		(4,139		)	950,411		(19,389		)
Asset-backed securities	—		—			9,873		(144		)	9,873		(144		)
	$	979,128	$	(17,199	)	$	165,084	$	(5,236	)	$	1,144,212	$	(22,435	)
Held-to-Maturity
Municipal bonds	$	55,484	$	(669	)	$	32,189	$	(1,975	)	$	87,673	$	(2,644	)
Corporate bonds	492		(8		)	—		—			492		(8		)
Mortgage-backed or related securities	54,224		(1,229		)	4,315		(226		)	58,539		(1,455		)
	$	110,200	$	(1,906	)	$	36,504	$	(2,201	)	$	146,704	$	(4,107	)
	December 31, 2017
	Less Than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Available-for-Sale:
U.S. Government and agency obligations	$	31,276	$	(211	)	$	23,341	$	(220	)	$	54,617	$	(431	)
Municipal bonds	20,879		(185		)	13,360		(260		)	34,239		(445		)
Corporate bonds	296		(4		)	4,682		(40		)	4,978		(44		)
Mortgage-backed or related securities	559,916		(5,138		)	100,662		(2,264		)	660,578		(7,402		)
Asset-backed securities	—		—			9,926		(93		)	9,926		(93		)
Equity securities	5,480		(148		)	—		—			5,480		(148		)
	$	617,847	$	(5,686	)	$	151,971	$	(2,877	)	$	769,818	$	(8,563	)
Held-to-Maturity
Municipal bonds	21,839		(171		)	34,314		(1,081		)	56,153		(1,252		)
Mortgage-backed or related securities	38,023		(378		)	4,434		(140		)	42,457		(518		)
	$	59,862	$	(549	)	$	38,748	$	(1,221	)	$	98,610	$	(1,770	)

At March 31, 2018, there were 277 securities—available-for-sale with unrealized losses, compared to 226 at December 31, 2017.  At March 31, 2018, there were 100 securities—held-to-maturity with unrealized losses, compared to 66 at December 31, 2017.  Management does not believe that any individual unrealized loss as of March 31, 2018 or December 31, 2017 represented other-than-temporary impairment (OTTI).  The decline in fair market value of these securities was generally due to changes in interest rates and changes in market-desired spreads subsequent to their purchase.

There were no sales of securities—trading during the three-month periods ended March 31, 2018 or 2017. The Company did not recognize any OTTI charges or recoveries on securities—trading during the three-month periods ended March 31, 2018 or 2017. There were no securities—trading in a nonaccrual status at March 31, 2018 or December 31, 2017.  Net unrealized holding gains of $3.4 million were recognized during the three months ended March 31, 2018 compared to $152,000 of net unrealized holdings gains recognized during the three months ended March 31, 2017.

There were no sales of securities—available-for-sale during the three months ended March 31, 2018, although partial calls of securities resulted in a net gain of $4,000 for the three months ended March 31, 2018.  Sales of securities—available-for-sale totaled $2.2 million which resulted

16

in a net gain of $13,000 for the three months ended March 31, 2017. There were no securities—available-for-sale in a nonaccrual status at March 31, 2018 or December 31, 2017.

There were no sales of securities—held-to-maturity during the three-month periods ended March 31, 2018 and 2017. There were no securities—held-to-maturity in a nonaccrual status at March 31, 2018 or December 31, 2017.

The amortized cost and estimated fair value of securities at March 31, 2018, by contractual maturity, are shown below (in thousands). Expected maturities will differ from contractual maturities because some securities may be called or prepaid with or without call or prepayment penalties.

	March 31, 2018
	Trading				Available-for-Sale				Held-to-Maturity
	Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value
Maturing in one year or less	$	100	$	100	$	3,090	$	3,081	$	1,943	$	1,942
Maturing after one year through five years	—		—		63,013		62,113		38,334		37,896
Maturing after five years through ten years	—		—		281,112		276,039		96,044		95,696
Maturing after ten years through twenty years	17,175		16,889		186,470		184,722		84,150		85,000
Maturing after twenty years	10,000		8,585		894,079		880,550		42,174		40,384
	$	27,275	$	25,574	$	1,427,764	$	1,406,505	$	262,645	$	260,918

The following table presents, as of March 31, 2018, investment securities which were pledged to secure borrowings, public deposits or other obligations as permitted or required by law (in thousands):

	March 31, 2018
	Carrying Value		Amortized Cost		Fair Value
Purpose or beneficiary:
State and local governments public deposits	$	129,288	$	129,325	$	130,478
Interest rate swap counterparties	14,924		15,089		14,762
Repurchase agreements	118,820		120,410		118,588
Other	3,900		3,900		3,744
Total pledged securities	$	266,932	$	268,724	$	267,572

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Note 4: LOANS RECEIVABLE AND THE ALLOWANCE FOR LOAN LOSSES

Loans receivable at March 31, 2018 and December 31, 2017 are summarized as follows (dollars in thousands):

	March 31, 2018					December 31, 2017
	Amount			Percent of Total		Amount			Percent of Total
Commercial real estate:
Owner-occupied	$	1,278,814		16.9	%	$	1,284,363		16.9	%
Investment properties	1,876,937			24.8		1,937,423			25.5
Multifamily real estate	321,039			4.2		314,188			4.1
Commercial construction	163,314			2.2		148,435			2.0
Multifamily construction	159,108			2.1		154,662			2.0
One- to four-family construction	434,204			5.7		415,327			5.5
Land and land development:
Residential	167,783			2.2		164,516			2.2
Commercial	24,331			0.3		24,583			0.3
Commercial business	1,296,691			17.2		1,279,894			16.8
Agricultural business, including secured by farmland	307,243			4.2		338,388			4.4
One- to four-family residential	833,598			11.0		848,289			11.2
Consumer:
Consumer secured by one- to four-family	522,826			6.9		522,931			6.9
Consumer—other	170,158			2.3		165,885			2.2
Total loans	7,556,046			100.0	%	7,598,884			100.0	%
Less allowance for loan losses	(92,207		)			(89,028		)
Net loans	$	7,463,839				$	7,509,856

Loan amounts are net of unearned loan fees in excess of unamortized costs of $731,000 as of March 31, 2018 and were net of unamortized costs of $158,000 as of December 31, 2017. Net loans include net discounts on acquired loans of $19.4 million and $21.1 million as of March 31, 2018 and December 31, 2017, respectively.

Purchased credit-impaired loans and purchased non-credit-impaired loans. Purchased loans, including loans acquired in business combinations, are recorded at their fair value at the acquisition date. Credit discounts are included in the determination of fair value; therefore, an allowance for loan and lease losses is not recorded at the acquisition date. Acquired loans are evaluated upon acquisition and classified as either purchased credit-impaired (PCI) or purchased non-credit-impaired. PCI loans reflect credit deterioration since origination such that it is probable at acquisition that the Company will be unable to collect all contractually required payments. The outstanding contractual unpaid principal balance of PCI loans, excluding acquisition accounting adjustments, was $29.8 million at March 31, 2018 and $32.5 million at December 31, 2017. The carrying balance of PCI loans was $19.3 million at March 31, 2018 and $21.3 million at December 31, 2017.

The following table presents the changes in the accretable yield for PCI loans for the three months ended March 31, 2018 and 2017 (in thousands):

	Three Months Ended March 31,
	2018			2017
Balance, beginning of period	$	6,520		$	8,717
Accretion to interest income	(1,097		)	(1,320		)
Disposals	58			—
Reclassifications from non-accretable difference	807			1,273
Balance, end of period	$	6,288		$	8,670

As of March 31, 2018 and December 31, 2017, the non-accretable difference between the contractually required payments and cash flows expected to be collected were $9.9 million and $11.3 million, respectively.

Impaired Loans and the Allowance for Loan Losses.  A loan is considered impaired when, based on current information and circumstances, the Company determines it is probable that it will be unable to collect all amounts due according to the contractual terms of the loan agreement, including scheduled interest payments.  Factors involved in determining impairment include, but are not limited to, the financial condition of the borrower, the value of the underlying collateral and the current status of the economy. Impaired loans are comprised of loans on nonaccrual,

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troubled debt restructurings (TDRs) that are performing under their restructured terms, and loans that are 90 days or more past due, but are still on accrual. PCI loans are considered performing within the scope of the purchased credit-impaired accounting guidance and are not included in the impaired loan tables.

The following tables provide information on impaired loans, excluding PCI loans, with and without allowance reserves at March 31, 2018 and December 31, 2017. Recorded investment includes the unpaid principal balance or the carrying amount of loans less charge-offs and net deferred loan fees (in thousands):

	March 31, 2018
	Unpaid Principal Balance		Recorded Investment				Related Allowance
			Without Allowance (1)		With Allowance (2)
Commercial real estate:
Owner-occupied	$	3,872	$	3,444	$	199	$	20
Investment properties	9,346		3,433		5,699		264
One- to four-family construction	186		186		—		—
Land and land development:
Residential	1,134		798		—		—
Commercial business	4,008		3,038		534		39
Agricultural business/farmland	9,598		6,440		3,031		201
One- to four-family residential	8,579		3,136		5,362		182
Consumer:
Consumer secured by one- to four-family	1,346		1,168		138		7
Consumer—other	180		76		71		4
	$	38,249	$	21,719	$	15,034	$	717
	December 31, 2017
	Unpaid Principal Balance		Recorded Investment				Related Allowance
			Without Allowance (1)		With Allowance (2)
Commercial real estate:
Owner-occupied	$	7,807	$	6,447	$	199	$	18
Investment properties	11,296		4,200		6,884		263
One- to four-family construction	298		298		—		—
Land and land development:
Residential	1,134		798		—		—
Commercial business	4,441		3,424		555		50
Agricultural business/farmland	9,388		6,230		3,031		264
One- to four-family residential	9,547		3,709		5,775		178
Consumer:
Consumer secured by one- to four-family	1,498		1,324		139		7
Consumer—other	134		58		73		2
	$	45,543	$	26,488	$	16,656	$	782

⁽¹⁾  Includes loans without an allowance reserve that have been individually evaluated for impairment and that evaluation concluded that no reserve was needed, and $10.6 million of homogenous and small balance loans as of both March 31, 2018 and December 31, 2017, that are collectively evaluated for impairment for which a general reserve has been established.

⁽²⁾  Loans with a specific allowance reserve have been individually evaluated for impairment using either a discounted cash flow analysis or, for collateral dependent loans, current appraisals less costs to sell to establish realizable value.

19

The following tables summarize our average recorded investment and interest income recognized on impaired loans by loan class for the three months ended March 31, 2018 and 2017 (in thousands):

	Three Months Ended March 31, 2018				Three Months Ended March 31, 2017
	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
Commercial real estate:
Owner-occupied	$	5,383	$	3	$	2,916	$	2
Investment properties	9,972		83		8,893		49
Multifamily real estate	—		—		495		4
One- to four-family construction	605		4		1,180		20
Land and land development:
Residential	798		—		1,899		17
Commercial	—		—		977		—
Commercial business	4,007		7		4,504		7
Agricultural business/farmland	9,109		33		6,282		32
One- to four-family residential	8,892		101		10,404		83
Consumer:
Consumer secured by one- to four-family	1,390		2		1,742		3
Consumer—other	149		1		268		3
	$	40,305	$	234	$	39,560	$	220

Troubled Debt Restructurings. Some of the Company’s loans are reported as TDRs.  Loans are reported as TDRs when the bank grants one or more concessions to a borrower experiencing financial difficulties that it would not otherwise consider.  Examples of such concessions include forgiveness of principal or accrued interest, extending the maturity date(s) or providing a lower interest rate than would be normally available for a transaction of similar risk.  Our TDRs have generally not involved forgiveness of amounts due, but almost always include a modification of multiple factors; the most common combination includes interest rate, payment amount and maturity date. As a result of these concessions, restructured loans are impaired as the Company will not collect all amounts due, both principal and interest, in accordance with the terms of the original loan agreement.  Loans identified as TDRs are accounted for in accordance with the Company's impaired loan accounting policies.

The following table presents TDRs by accrual and nonaccrual status at March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018						December 31, 2017
	Accrual Status		Nonaccrual Status		Total TDRs		Accrual Status		Nonaccrual Status		Total TDRs
Commercial real estate:
Owner-occupied	$	199	$	85	$	284	$	199	$	87	$	286
Investment properties	5,699		—		5,699		6,884		—		6,884
Commercial business	534		—		534		555		—		555
Agricultural business, including secured by farmland	2,531		29		2,560		3,129		29		3,158
One- to four-family residential	5,092		457		5,549		5,136		801		5,937
Consumer:
Consumer secured by one- to four-family	138		—		138		139		—		139
Consumer—other	71		—		71		73		—		73
	$	14,264	$	571	$	14,835	$	16,115	$	917	$	17,032

As of both March 31, 2018 and December 31, 2017, the Company had commitments to advance additional funds related to TDRs up to $45,000.

No new TDRs occurred during the three months ended March 31, 2018 or 2017.

There were no TDRs which incurred a payment default within twelve months of the restructure date during the three-month periods ended March 31, 2018 and 2017. A default on a TDR results in either a transfer to nonaccrual status or a partial charge-off, or both.

20

Credit Quality Indicators:  To appropriately and effectively manage the ongoing credit quality of the Company’s loan portfolio, management has implemented a risk-rating or loan grading system for its loans.  The system is a tool to evaluate portfolio asset quality throughout each applicable loan’s life as an asset of the Company.  Generally, loans and leases are risk rated on an aggregate borrower/relationship basis with individual loans sharing similar ratings.  There are some instances when specific situations relating to individual loans will provide the basis for different risk ratings within the aggregate relationship.  Loans are graded on a scale of 1 to 9.  A description of the general characteristics of these categories is shown below:

Overall Risk Rating Definitions:  Risk-ratings contain both qualitative and quantitative measurements and take into account the financial strength of a borrower and the structure of the loan or lease.  Consequently, the definitions are to be applied in the context of each lending transaction and judgment must also be used to determine the appropriate risk rating, as it is not unusual for a loan or lease to exhibit characteristics of more than one risk-rating category.  Consideration for the final rating is centered in the borrower’s ability to repay, in a timely fashion, both principal and interest.  There were no material changes in the risk-rating or loan grading system in the three months ended March 31, 2018.

Risk Rating 1: Exceptional

A credit supported by exceptional financial strength, stability, and liquidity.  The risk rating of 1 is reserved for the Company’s top quality loans, generally reserved for investment grade credits underwritten to the standards of institutional credit providers.

Risk Rating 2: Excellent

A credit supported by excellent financial strength, stability and liquidity.  The risk rating of 2 is reserved for very strong and highly stable customers with ready access to alternative financing sources.

Risk Rating 3: Strong

A credit supported by good overall financial strength and stability.  Collateral margins are strong; cash flow is stable although susceptible to cyclical market changes.

Risk Rating 4: Acceptable

A credit supported by the borrower’s adequate financial strength and stability.  Assets and cash flow are reasonably sound and provide for orderly debt reduction.  Access to alternative financing sources will be more difficult to obtain.

Risk Rating 5: Watch

A credit with the characteristics of an acceptable credit which requires, however, more than the normal level of supervision and warrants formal quarterly management reporting.  Credits in this category are not yet criticized or classified, but due to adverse events or aspects of underwriting require closer than normal supervision. Generally, credits should be watch credits in most cases for six months or less as the impact of stress factors are analyzed.

Risk Rating 6: Special Mention

A credit with potential weaknesses that deserves management’s close attention is risk rated a 6.  If left uncorrected, these potential weaknesses will result in deterioration in the capacity to repay debt.  A key distinction between Special Mention and Substandard is that in a Special Mention credit, there are identified weaknesses that pose potential risk(s) to the repayment sources, versus well defined weaknesses that pose risk(s) to the repayment sources.  Assets in this category are expected to be in this category no more than 9-12 months as the potential weaknesses in the credit are resolved.

Risk Rating 7: Substandard

A credit with well defined weaknesses that jeopardize the ability to repay in full is risk rated a 7.  These credits are inadequately protected by either the sound net worth and payment capacity of the borrower or the value of pledged collateral.  These are credits with a distinct possibility of loss.  Loans headed for foreclosure and/or legal action due to deterioration are rated 7 or worse.

Risk Rating 8: Doubtful

A credit with an extremely high probability of loss is risk rated 8.  These credits have all the same critical weaknesses that are found in a substandard loan; however, the weaknesses are elevated to the point that based upon current information, collection or liquidation in full is improbable.  While some loss on doubtful credits is expected, pending events may strengthen a credit making the amount and timing of any loss indeterminable.  In these situations taking the loss is inappropriate until it is clear that the pending event has failed to strengthen the credit and improve the capacity to repay debt.

Risk Rating 9: Loss

A credit that is considered to be currently uncollectible or of such little value that it is no longer a viable bank asset is risk rated 9.  Losses should be taken in the accounting period in which the credit is determined to be uncollectible.  Taking a loss does not mean that a credit has absolutely no recovery or salvage value but, rather, it is not practical or desirable to defer writing off the credit, even though partial recovery may occur in the future.

21

The following tables present the Company’s portfolio of risk-rated loans and non-risk-rated loans by grade or other characteristics as of March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018
By class:	Pass (Risk Ratings 1-5)(1)		Special Mention		Substandard		Doubtful		Loss		Total Loans
Commercial real estate:
Owner-occupied	$	1,244,007	$	13,686	$	21,121	$	—	$	—	$	1,278,814
Investment properties	1,866,062		—		10,875		—		—		1,876,937
Multifamily real estate	320,533		—		506		—		—		321,039
Commercial construction	163,314		—		—		—		—		163,314
Multifamily construction	159,108		—		—		—		—		159,108
One- to four-family construction	429,172		—		5,032		—		—		434,204
Land and land development:
Residential	156,144		10,321		1,318		—		—		167,783
Commercial	21,507		—		2,824		—		—		24,331
Commercial business	1,228,831		16,599		51,152		109		—		1,296,691
Agricultural business, including secured by farmland	286,925		6,203		14,115		—		—		307,243
One- to four-family residential	827,788		553		5,257		—		—		833,598
Consumer:
Consumer secured by one- to four-family	520,263		—		2,563		—		—		522,826
Consumer—other	169,889		11		258		—		—		170,158
Total	$	7,393,543	$	47,373	$	115,021	$	109	$	—	$	7,556,046

22

	December 31, 2017
By class:	Pass (Risk Ratings 1-5)(1)		Special Mention		Substandard		Doubtful		Loss		Total Loans
Commercial real estate:
Owner-occupied	$	1,246,125	$	12,227	$	26,011	$	—	$	—	$	1,284,363
Investment properties	1,918,940		9,118		9,365		—		—		1,937,423
Multifamily real estate	313,432		—		756		—		—		314,188
Commercial construction	148,435		—		—		—		—		148,435
Multifamily construction	154,662		—		—		—		—		154,662
One- to four-family construction	411,802		—		3,525		—		—		415,327
Land and land development:
Residential	153,073		10,554		889		—		—		164,516
Commercial	21,665		—		2,918		—		—		24,583
Commercial business	1,213,365		12,135		54,282		112		—		1,279,894
Agricultural business, including secured by farmland	321,110		3,852		13,426		—		—		338,388
One- to four-family residential	842,304		569		5,416		—		—		848,289
Consumer:
Consumer secured by one- to four-family	520,675		—		2,256		—		—		522,931
Consumer—other	165,594		13		278		—		—		165,885
Total	$	7,431,182	$	48,468	$	119,122	$	112	$	—	$	7,598,884

⁽¹⁾   The Pass category includes some performing loans that are part of homogenous pools which are not individually risk-rated.  This includes all consumer loans, all one- to four-family residential loans and, as of March 31, 2018 and December 31, 2017, in the commercial business category, $535.0 million and $296.8 million, respectively, of credit-scored small business loans.  As loans in these pools become non-performing, they are individually risk-rated.

23

The following tables provide additional detail on the age analysis of the Company’s past due loans as of March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018
	30-59 Days Past Due		60-89 Days Past Due		90 Days or More Past Due		Total Past Due		Purchased Credit-Impaired		Current		Total Loans		Loans 90 Days or More Past Due and Accruing		Non-accrual
Commercial real estate:
Owner-occupied	$	189	$	169	$	3,079	$	3,437	$	6,372	$	1,269,005	$	1,278,814	$	—	$	3,444
Investment properties	1,402		—		1,109		2,511		7,072		1,867,354		1,876,937		—		3,433
Multifamily real estate	—		—		—		—		167		320,872		321,039		—		—
Commercial construction	—		—		—		—		—		163,314		163,314		—		—
Multifamily construction	—		—		—		—		—		159,108		159,108		—		—
One-to-four-family construction	4,323		320		186		4,829		440		428,935		434,204		—		186
Land and land development:
Residential	—		784		798		1,582		—		166,201		167,783		—		798
Commercial	—		—		—		—		2,824		21,507		24,331		—		—
Commercial business	1,744		702		2,137		4,583		1,829		1,290,279		1,296,691		1		3,037
Agricultural business, including secured by farmland	1,580		—		6,507		8,087		415		298,741		307,243		820		6,120
One- to four-family residential	4,467		476		2,501		7,444		129		826,025		833,598		591		2,815
Consumer:
Consumer secured by one- to four-family	1,412		82		584		2,078		—		520,748		522,826		—		1,168
Consumer—other	847		148		35		1,030		68		169,060		170,158		7		69
Total	$	15,964	$	2,681	$	16,936	$	35,581	$	19,316	$	7,501,149	$	7,556,046	$	1,419	$	21,070

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	December 31, 2017
	30-59 Days Past Due		60-89 Days Past Due		90 Days or More Past Due		Total Past Due		Purchased Credit-Impaired		Current		Total Loans		Loans 90 Days or More Past Due and Accruing		Non-accrual
Commercial real estate:
Owner-occupied	$	5,323	$	76	$	5,490	$	10,889	$	7,682	$	1,265,792	$	1,284,363	$	—	$	6,447
Investment properties	1,737		—		4,096		5,833		7,166		1,924,424		1,937,423		—		4,199
Multifamily real estate	105		—		—		105		169		313,914		314,188		—		—
Commercial construction	—		—		—		—		—		148,435		148,435		—		—
Multifamily construction	3,416		—		—		3,416		—		151,246		154,662		—		—
One-to-four-family construction	4,892		725		298		5,915		446		408,966		415,327		298		—
Land and land development:
Residential	—		—		798		798		—		163,718		164,516		—		798
Commercial	—		—		—		—		2,919		21,664		24,583		—		—
Commercial business	1,574		404		2,577		4,555		2,159		1,273,180		1,279,894		18		3,406
Agricultural business, including secured by farmland	598		533		2,017		3,148		565		334,675		338,388		—		6,132
One-to four-family residential	4,475		1,241		2,715		8,431		136		839,722		848,289		1,085		3,264
Consumer:
Consumer secured by one- to four-family	1,355		62		713		2,130		—		520,801		522,931		85		1,239
Consumer—other	609		136		15		760		68		165,057		165,885		—		58
Total	$	24,084	$	3,177	$	18,719	$	45,980	$	21,310	$	7,531,594	$	7,598,884	$	1,486	$	25,543

25

The following tables provide additional information on the allowance for loan losses and loan balances individually and collectively evaluated for impairment at or for the three months ended March 31, 2018 and 2017 (in thousands):

	For the Three Months Ended March 31, 2018
	Commercial Real Estate			Multifamily Real Estate		Construction and Land		Commercial Business			Agricultural Business			One- to Four-Family Residential			Consumer			Unallocated			Total
Allowance for loan losses:
Beginning balance	$	22,824		$	1,633	$	27,568	$	18,311		$	4,053		$	2,055		$	3,866		$	8,718		$	89,028
Provision for loan losses	(715		)	959		1,024		1,923			(1,047		)	1,450			1,913			(3,507		)	2,000
Recoveries	1,352			—		174		170			—			290			112			—			2,098
Charge-offs	—			—		—		(519		)	(7		)	(16		)	(377		)	—			(919		)
Ending balance	$	23,461		$	2,592	$	28,766	$	19,885		$	2,999		$	3,779		$	5,514		$	5,211		$	92,207

	March 31, 2018
	Commercial  Real Estate		Multifamily Real Estate		Construction and Land		Commercial Business		Agricultural Business		One- to Four-Family Residential		Consumer		Unallocated		Total
Allowance for loan losses:
Individually evaluated for impairment	$	284	$	—	$	—	$	39	$	201	$	182	$	11	$	—	$	717
Collectively evaluated for impairment	23,177		2,592		28,766		19,799		2,707		3,597		5,503		5,211		91,352
Purchased credit-impaired loans	—		—		—		47		91		—		—		—		138
Total allowance for loan losses	$	23,461	$	2,592	$	28,766	$	19,885	$	2,999	$	3,779	$	5,514	$	5,211	$	92,207

Loan balances:
Individually evaluated for impairment	$	11,607	$	—	$	750	$	534	$	7,943	$	5,092	$	208	$	—	$	26,134
Collectively evaluated for impairment	3,130,700		320,872		944,726		1,294,328		298,885		828,377		692,708		—		7,510,596
Purchased credit-impaired loans	13,444		167		3,264		1,829		415		129		68		—		19,316
Total loans	$	3,155,751	$	321,039	$	948,740	$	1,296,691	$	307,243	$	833,598	$	692,984	$	—	$	7,556,046

26

	For the Three Months Ended March 31, 2017
	Commercial  Real Estate			Multifamily Real Estate		Construction and Land			Commercial Business			Agricultural Business			One- to Four-Family Residential			Consumer			Unallocated		Total
Allowance for loan losses:
Beginning balance	$	20,993		$	1,360	$	34,252		$	16,533		$	2,967		$	2,238		$	4,104		$	3,550	$	85,997
Provision for loan losses	(591		)	18		(4,871		)	4,688			324			(409		)	5			2,836		2,000
Recoveries	70			—		83			173			113			145			94			—		678
Charge-offs	—			—		—			(1,626		)	(159		)	—			(363		)	—		(2,148		)
Ending balance	$	20,472		$	1,378	$	29,464		$	19,768		$	3,245		$	1,974		$	3,840		$	6,386	$	86,527

	March 31, 2017
	Commercial Real Estate		Multifamily Real Estate		Construction and Land		Commercial Business		Agricultural Business		One- to Four-Family Residential		Consumer		Unallocated		Total
Allowance for loan losses:
Individually evaluated for impairment	$	419	$	62	$	323	$	62	$	238	$	229	$	11	$	—	$	1,344
Collectively evaluated for impairment	20,053		1,316		29,122		19,706		3,007		1,745		3,829		6,386		85,164
Purchased credit-impaired loans	—		—		19		—		—		—		—		—		19
Total allowance for loan losses	$	20,472	$	1,378	$	29,464	$	19,768	$	3,245	$	1,974	$	3,840	$	6,386	$	86,527

Loan balances:
Individually evaluated for impairment	$	9,506	$	347	$	4,006	$	2,710	$	3,815	$	6,653	$	220	$	—	$	27,257
Collectively evaluated for  impairment	3,341,177		253,725		795,887		1,218,415		308,834		796,026		649,433		—		7,363,497
Purchased credit impaired loans	22,030		174		3,777		3,416		725		312		67		—		30,501
Total loans	$	3,372,713	$	254,246	$	803,670	$	1,224,541	$	313,374	$	802,991	$	649,720	$	—	$	7,421,255

27

Note 5:  REAL ESTATE OWNED, NET

The following table presents the changes in REO for the three months ended March 31, 2018 and 2017 (in thousands):

	Three Months Ended March 31,
	2018			2017
Balance, beginning of the period	$	360		$	11,081
Additions from loan foreclosures	128			—
Proceeds from dispositions of REO	—			(9,193		)
Gain on sale of REO	—			1,202
Valuation adjustments in the period	(160		)	(50		)
Balance, end of the period	$	328		$	3,040

REO properties are recorded at the estimated fair value of the property, less expected selling costs, establishing a new cost basis.  Subsequently, REO properties are carried at the lower of the new cost basis or updated fair market values, based on updated appraisals of the underlying properties, as received.  Valuation allowances on the carrying value of REO may be recognized based on updated appraisals or on management’s authorization to reduce the selling price of a property. At March 31, 2018 and December 31, 2017, the Company had $98,000 and $0, respectively, of foreclosed one- to four-family residential real estate properties held as REO. The recorded investment in one- to four-family residential loans in the process of foreclosure was $1.6 million at March 31, 2018 compared with $2.0 million at December 31, 2017.

Note 6:  GOODWILL, OTHER INTANGIBLE ASSETS AND MORTGAGE SERVICING RIGHTS

Goodwill and Other Intangible Assets:  At March 31, 2018, intangible assets are comprised of goodwill, CDI, and favorable leasehold intangibles (LHI) acquired in business combinations. Goodwill represents the excess of the purchase considerations paid over the fair value of the assets acquired, net of the fair values of liabilities assumed in a business combination, and is not amortized but is reviewed annually for impairment. At December 31, 2017, the Company completed its qualitative assessment of goodwill and concluded that it is more likely than not that the fair value of Banner, the reporting unit, exceeds the carrying value.

CDI represents the value of transaction-related deposits and the value of the customer relationships associated with the deposits. LHI represents the value ascribed to leases assumed in an acquisition in which the lease terms are favorable compared to a market lease at the date of acquisition. The Company amortizes CDI and LHI over their estimated useful lives and reviews them at least annually for events or circumstances that could impair their value. 

The following table summarizes the changes in the Company’s goodwill and other intangibles for the three months ended March 31, 2018 and the year ended December 31, 2017 (in thousands):

	Goodwill			CDI			LHI			Total
Balance, December 31, 2016	$	244,583		$	29,701		$	461		$	274,745
Amortization	—			(6,247		)	(184		)	(6,431		)
Other changes(1)	(1,924		)	(1,076		)	—			(3,000		)
Balance, December 31, 2017	242,659			22,378			277			265,314
Amortization	—			(1,382		)	(22		)	(1,404		)
Balance, March 31, 2018	$	242,659		$	20,996		$	255		$	263,910

⁽¹⁾ Acquired goodwill and CDI were adjusted for the sale of the Utah branches in 2017.

28

The following table presents the estimated amortization expense with respect to CDI for the periods indicated (in thousands):

	Estimated Amortization
Remainder of 2018	$	3,990
2019	4,683
2020	3,996
2021	3,307
2022	2,524
Thereafter	2,496
	$	20,996

Mortgage Servicing Rights:  Mortgage servicing rights are reported in other assets. Mortgage servicing rights are initially recorded at fair value and are amortized in proportion to, and over the period of, the estimated future net servicing income of the underlying financial assets.  Mortgage servicing rights are subsequently evaluated for impairment based upon the fair value of the rights compared to the amortized cost (remaining unamortized initial fair value).  If the fair value is less than the amortized cost, a valuation allowance is created through an impairment charge, which is recognized in servicing fee income within mortgage banking operations on the consolidated statement of operations.   However, if the fair value is greater than the amortized cost, the amount above the amortized cost is not recognized in the carrying value.  During the three months ended March 31, 2018 and 2017, the Company did not record any impairment charges or recoveries against mortgage servicing rights. The unpaid principal balance for loans which mortgage servicing rights have been recorded totaled $2.23 billion and $2.19 billion at March 31, 2018 and December 31, 2017, respectively.  Custodial accounts maintained in connection with this servicing totaled $19.1 million and $10.2 million at March 31, 2018 and December 31, 2017, respectively.

An analysis of our mortgage servicing rights for the three months ended March 31, 2018 and 2017 is presented below (in thousands):

	Three Months Ended March 31,
	2018			2017
Balance, beginning of the period	$	14,738		$	15,249
Additions—amounts capitalized	821			945
Additions—through purchase	15			—
Amortization (1)	(957		)	(922		)
Balance, end of the period (2)	$	14,617		$	15,272

⁽¹⁾  Amortization of mortgage servicing rights is recorded as a reduction of loan servicing income within mortgage banking operations and any unamortized balance is fully amortized if the loan repays in full.

⁽²⁾  There was no valuation allowance as of March 31, 2018 and 2017.

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Note 7:  DEPOSITS

Deposits consisted of the following at March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018		December 31, 2017
Non-interest-bearing accounts	$	3,383,439	$	3,265,544
Interest-bearing checking	1,043,840		971,137
Regular savings accounts	1,637,814		1,557,500
Money market accounts	1,459,614		1,422,313
Total interest-bearing transaction and saving accounts	4,141,268		3,950,950
Certificates of deposit:
Certificates of deposit less than or equal to $250,000	865,353		813,997
Certificates of deposit greater than $250,000	153,002		152,940
Total certificates of deposit(1)	1,018,355		966,937
Total deposits	$	8,543,062	$	8,183,431
Included in total deposits:
Public fund transaction and savings accounts	$	190,311	$	198,719
Public fund interest-bearing certificates	24,928		23,685
Total public deposits	$	215,239	$	222,404
Total brokered deposits	$	169,523	$	57,228

⁽¹⁾ Certificates of deposit include $5,000 and $11,000 of acquisition premiums at March 31, 2018 and December 31, 2017, respectively.

At March 31, 2018 and December 31, 2017, the Company had certificates of deposit of $156.3 million and $155.9 million, respectively, that were equal to or greater than $250,000.

Scheduled maturities and weighted average interest rates of certificate accounts at March 31, 2018 are as follows (dollars in thousands):

	March 31, 2018
	Amount		Weighted Average Rate
Maturing in one year or less	$	703,650	0.63	%
Maturing after one year through two years	146,484		0.98
Maturing after two years through three years	128,810		1.31
Maturing after three years through four years	23,571		1.11
Maturing after four years through five years	13,460		1.33
Maturing after five years	2,380		1.06
Total certificates of deposit	$	1,018,355	0.79	%

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Note 8:  FAIR VALUE OF FINANCIAL INSTRUMENTS

The following table presents estimated fair values of the Company’s financial instruments as of March 31, 2018 and December 31, 2017, whether or not measured at fair value in the Consolidated Statements of Financial Condition (in thousands):

		March 31, 2018				December 31, 2017
	Level	Carrying Value		Estimated Fair Value		Carrying Value		Estimated Fair Value
Assets:
Cash and cash equivalents	1	$	242,048	$	242,048	$	261,200	$	261,200
Securities—trading	2,3	25,574		25,574		22,318		22,318
Securities—available-for-sale	2	1,406,505		1,406,505		919,485		919,485
Securities—held-to-maturity	2	259,204		257,477		256,793		258,710
Securities—held-to-maturity	3	3,441		3,441		3,478		3,478
Loans held for sale	2	141,808		141,898		40,725		40,923
Loans receivable	3	7,556,046		7,462,004		7,598,884		7,445,990
FHLB stock	3	18,036		18,036		10,334		10,334
Bank-owned life insurance	1	163,519		163,519		162,668		162,668
Mortgage servicing rights	3	14,617		20,560		14,738		19,835
Equity securities	1	5,698		5,698		—		—
Derivatives:
Interest rate swaps	2	4,592		4,592		5,083		5,083
Interest rate lock and forward sales commitments	2	683		683		523		523
Liabilities:
Demand, interest checking and money market accounts	2	5,886,893		5,886,893		5,658,994		5,658,994
Regular savings	2	1,637,814		1,637,814		1,557,500		1,557,500
Certificates of deposit	2	1,018,355		994,616		966,937		947,517
FHLB advances	2	192,195		192,195		202		202
Other borrowings	2	101,844		101,844		95,860		95,860
Junior subordinated debentures	3	112,516		112,516		98,707		98,707
Derivatives:
Interest rate swaps	2	4,592		4,592		5,083		5,083
Interest rate lock and forward sales commitments	2	260		260		201		201

The Company measures and discloses certain assets and liabilities at fair value. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (that is, not a forced liquidation or distressed sale). GAAP establishes a consistent framework for measuring fair value and disclosure requirements about fair value measurements. Among other things, the accounting standard requires the reporting entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect the Company’s estimates for market assumptions. These two types of inputs create the following fair value hierarchy:

• Level 1 – Quoted prices in active markets for identical instruments. An active market is a market in which transactions occur with sufficient frequency and volume to provide pricing information on an ongoing basis. A quoted price in an active market provides the most reliable evidence of fair value and shall be used to measure fair value whenever available.

• Level 2 – Observable inputs other than Level 1 including quoted prices in active markets for similar instruments, quoted prices in less active markets for identical or similar instruments, or other observable inputs that can be corroborated by observable market data.

• Level 3 – Unobservable inputs supported by little or no market activity for financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation; also includes observable inputs from non-binding single dealer quotes not corroborated by observable market data.

The estimated fair value amounts of financial instruments have been determined by the Company using available market information and appropriate valuation methodologies. However, considerable judgment is required to interpret data to develop the estimates of fair value. Accordingly, the estimates presented herein are not necessarily indicative of the amounts the Company could realize at a future date. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts. In addition, reasonable comparability between financial institutions may not be likely due to the wide range of permitted valuation techniques and numerous estimates that must be made given the absence of active secondary markets for certain financial instruments. This lack of uniform valuation methodologies also introduces a greater degree of subjectivity to these estimated fair values. Transfers between levels of the fair value hierarchy are deemed to occur at the end of the reporting period.

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Items Measured at Fair Value on a Recurring Basis:

The following tables present financial assets and liabilities measured at fair value on a recurring basis and the level within the fair value hierarchy of the fair value measurements for those assets and liabilities as of March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018
	Level 1		Level 2		Level 3		Total
Assets:
Securities—trading
Municipal bonds	$	—	$	100	$	—	$	100
Corporate bonds (Trust Preferred Securities)	—		—		25,474		25,474
	—		100		25,474		25,574
Securities—available-for-sale
U.S. Government and agency obligations	—		143,306		—		143,306
Municipal bonds	—		68,958		—		68,958
Corporate bonds	—		6,112		—		6,112
Mortgage-backed or related securities	—		1,160,413		—		1,160,413
Asset-backed securities	—		27,716		—		27,716
	—		1,406,505		—		1,406,505
Loans held for sale	—		137,734		—		137,734
Equity securities	—		5,698		—		5,698
Derivatives
Interest rate swaps	—		4,592		—		4,592
Interest rate lock and forward sales commitments	—		683		—		683
	$	—	$	1,555,312	$	25,474	$	1,580,786
Liabilities:
Junior subordinated debentures, net of unamortized deferred issuance costs	$	—	$	—	$	112,516	$	112,516
Derivatives
Interest rate swaps	—		4,592		—		4,592
Interest rate lock and forward sales commitments	—		260		—		260
	$	—	$	4,852	$	112,516	$	117,368

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	December 31, 2017
	Level 1		Level 2		Level 3		Total
Assets:
Securities—trading
Municipal bonds	$	—	$	100	$	—	$	100
Corporate Bonds (Trust Preferred Securities)	—		—		22,058		22,058
Equity securities	—		160		—		160
	—		260		22,058		22,318
Securities—available-for-sale
U.S. Government and agency obligations	—		72,466		—		72,466
Municipal bonds	—		68,733		—		68,733
Corporate bonds	—		5,393		—		5,393
Mortgage-backed securities	—		739,557		—		739,557
Asset-backed securities	—		27,758		—		27,758
Equity securities	—		5,578		—		5,578
	—		919,485		—		919,485
Loans held for sale	—		32,392		—		32,392
Derivatives
Interest rate swaps	—		5,083		—		5,083
Interest rate lock and forward sales commitments	—		523		—		523
	$	—	$	957,743	$	22,058	$	979,801
Liabilities:
Junior subordinated debentures, net of unamortized deferred issuance costs	$	—	$	—	$	98,707	$	98,707
Derivatives
Interest rate swaps	—		5,083		—		5,083
Interest rate lock and forward sales commitments	—		201		—		201
	$	—	$	5,284	$	98,707	$	103,991

The following methods were used to estimate the fair value of each class of financial instruments above:

Securities:  The estimated fair values of investment securities and mortgaged-backed securities are priced using current active market quotes, if available, which are considered Level 1 measurements.  For most of the portfolio, matrix pricing based on the securities’ relationship to other benchmark quoted prices is used to establish the fair value.  These measurements are considered Level 2.  Due to the continued limited activity in the trust preferred markets that have limited the observability of market spreads for some of the Company’s Trust Preferred Securities (TPS) securities, management has classified these securities as a Level 3 fair value measure. Management periodically reviews the pricing information received from third-party pricing services and tests those prices against other sources to validate the reported fair values.

Loans Held for Sale: Fair values for residential mortgage loans held for sale are determined by comparing actual loan rates to current secondary market prices for similar loans. Fair values for multifamily loans held for sale are calculated based on discounted cash flows using as a discount rate a combination of market spreads for similar loan types added to selected index rates.

Mortgage Servicing Rights: Fair values are estimated based on an independent dealer analysis of discounted cash flows.  The evaluation utilizes assumptions market participants would use in determining fair value including prepayment speeds, delinquency and foreclosure rates, the discount rate, servicing costs, and the timing of cash flows.  The mortgage servicing portfolio is stratified by loan type and fair value estimates are adjusted up or down based on the serviced loan interest rates versus current rates on new loan originations since the most recent independent analysis.

Junior Subordinated Debentures:  The fair value of junior subordinated debentures is estimated using a discounted cash flow approach. The significant inputs included in the estimation of fair value are the credit risk adjusted spread and three month LIBOR. The credit risk adjusted spread represents the nonperformance risk of the liability. The Company utilizes an external valuation firm to assist management in validating the reasonableness of the credit risk adjusted spread used to determine the fair value. The junior subordinated debentures are carried at fair value which represents the estimated amount that would be paid to transfer these liabilities in an orderly transaction amongst market participants. Due to credit concerns in the capital markets and inactivity in the trust preferred markets that have limited the observability of market spreads, management has classified this as a Level 3 fair value measure.

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Derivatives: Derivatives include interest rate swap agreements, interest rate lock commitments to originate loans held for sale and forward sales contracts to sell loans and securities related to mortgage banking activities. Fair values for these instruments, which generally change as a result of changes in the level of market interest rates, are estimated based on dealer quotes and secondary market sources.

Off-Balance-Sheet Items: Off-balance-sheet financial instruments include unfunded commitments to extend credit, including standby letters of credit, and commitments to purchase investment securities. The fair value of these instruments is not considered to be material.

Limitations: The fair value estimates presented herein are based on pertinent information available to management as of March 31, 2018 and December 31, 2017.  The factors used in the fair values estimates are subject to change subsequent to the dates the fair value estimates are completed, therefore, current estimates of fair value may differ significantly from the amounts presented herein.

Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs (Level 3):

The following table provides a description of the valuation technique, unobservable inputs, and qualitative information about the unobservable inputs for certain of the Company's assets and liabilities classified as Level 3 and measured at fair value on a recurring and non-recurring basis at March 31, 2018 and December 31, 2017:

			Weighted Average Rate / Range
Financial Instruments	Valuation Techniques	Unobservable Inputs	March 31, 2018		December 31, 2017
Corporate Bonds (TPS securities)	Discounted cash flows	Discount rate	6.31	%	6.69	%
Junior subordinated debentures	Discounted cash flows	Discount rate	6.31	%	6.69	%
Impaired loans	Collateral Valuations	Discount to appraised value	8.5	%	8.5% to 20.0%
REO	Appraisals	Discount to appraised value	61	%	42	%

TPS securities : Management believes that the credit risk-adjusted spread used to develop the discount rate utilized in the fair value measurement of TPS securities is indicative of the risk premium a willing market participant would require under current market conditions for instruments with similar contractual rates and terms and conditions and issuers with similar credit risk profiles and with similar expected probability of default. Management attributes the change in fair value of these instruments, compared to their par value, primarily to perceived general market adjustments to the risk premiums for these types of assets subsequent to their issuance.

Junior subordinated debentures: Similar to the TPS securities discussed above, management believes that the credit risk-adjusted spread utilized in the fair value measurement of the junior subordinated debentures is indicative of the risk premium a willing market participant would require under current market conditions for an issuer with Banner's credit risk profile. Management attributes the change in fair value of the junior subordinated debentures, compared to their par value, primarily to perceived general market adjustments to the risk premiums for these types of liabilities subsequent to their issuance. Future contractions in the risk adjusted spread relative to the spread currently utilized to measure the Company's junior subordinated debentures at fair value as of March 31, 2018, or the passage of time, will result in negative fair value adjustments. At March 31, 2018, the discount rate utilized was based on a credit spread of 400 basis points and three-month LIBOR of 231 basis points.

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The following tables provide a reconciliation of the assets and liabilities measured at fair value using significant unobservable inputs (Level 3) on a recurring basis during the three months ended March 31, 2018 and 2017 (in thousands):

	Three Months Ended
	March 31, 2018
	Level 3 Fair Value Inputs
	TPS Securities		Borrowings—Junior Subordinated Debentures
Beginning balance	$	22,058	$	98,707
Total gains or losses recognized
Assets gains	3,416		—
Liabilities losses(1)	—		13,809
Ending balance at March 31, 2018	$	25,474	$	112,516
	Three Months Ended
	March 31, 2017
	Level 3 Fair Value Inputs
	TPS Securities		Borrowings—Junior Subordinated Debentures
Beginning balance	$	21,143	$	95,200
Total gains or losses recognized
Assets gains	218		—
Liabilities losses	—		840
Ending balance at March 31, 2017	$	21,361	$	96,040

⁽¹⁾ The change in fair value on the junior subordinated debentures in 2018 was recorded in other comprehensive income (loss).

The Company has elected to continue to recognize the interest income and dividends from the securities reclassified to fair value from available-for-sale as a component of interest income as was done in prior years when they were classified as available-for-sale.  Interest expense related to the junior subordinated debentures continues to be measured based on contractual interest rates and reported in interest expense.  The change in fair market value on TPS securities and on junior subordinated debentures prior to 2018 has been recorded as a component of non-interest income. Beginning in 2018, the change in fair value of the junior subordinated debentures, which represent changes in instrument specific credit risk, are recorded in other comprehensive income (loss).

Items Measured at Fair Value on a Non-recurring Basis:

The following tables present financial assets measured at fair value on a non-recurring basis and the level within the fair value hierarchy of the fair value measurements for those assets as of March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018
	Level 1		Level 2		Level 3		Total
Impaired loans	$	—	$	—	$	500	$	500
REO	—		—		328		328
	December 31, 2017
	Level 1		Level 2		Level 3		Total
Impaired loans	$	—	$	—	$	6,535	$	6,535
REO	—		—		360		360

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The following table presents the losses resulting from non-recurring fair value adjustments for the three months ended March 31, 2018 and 2017 (in thousands):

	Three months ended March 31,
	2018			2017
REO	$	(160	)	$	(50	)
Total loss from non-recurring measurements	$	(160	)	$	(50	)

Impaired loans: Impaired loans are measured based on the present value of expected future cash flows discounted at the loan's effective interest rate or, as a practical expedient, at the loan's observable market price or the fair value of collateral if the loan is collateral dependent. If this practical expedient is used, the impaired loans are considered to be held at fair value. Subsequent changes in the value of impaired loans are included within the provision for loan losses in the same manner in which impairment initially was recognized or as a reduction in the provision that would otherwise be reported. Impaired loans are periodically evaluated to determine if valuation adjustments, or partial write-downs, should be recorded. The need for valuation adjustments arises when observable market prices or current appraised values of collateral indicate a shortfall in collateral value compared to current carrying values of the related loan. If the Company determines that the value of the impaired loan is less than the carrying value of the loan, the Company either establishes an impairment reserve as a specific component of the allowance for loan losses or charges off the impaired amount. These valuation adjustments are considered non-recurring fair value adjustments. The remaining impaired loans are evaluated for reserve needs in homogenous pools within the Company’s methodology for assessing the adequacy of the allowance for loan losses.

REO: The Company records REO (acquired through a lending relationship) at fair value on a non-recurring basis. Fair value adjustments on REO are based on updated real estate appraisals which are based on current market conditions. All REO properties are recorded at the lower of the estimated fair value of the real estate, less expected selling costs, or the carrying amount of the defaulted loans. From time to time, non-recurring fair value adjustments to REO are recorded to reflect partial write-downs based on an observable market price or current appraised value of property. Banner considers any valuation inputs related to REO to be Level 3 inputs. The individual carrying values of these assets are reviewed for impairment at least annually and any additional impairment charges are expensed to operations.

Note 9:  INCOME TAXES AND DEFERRED TAXES

The Company files a consolidated income tax return including all of its wholly-owned subsidiaries on a calendar year basis. Income taxes are accounted for using the asset and liability method. Under this method, a deferred tax asset or liability is determined based on the enacted tax rates which will be in effect when the differences between the financial statement carrying amounts and tax basis of existing assets and liabilities are expected to be reported in the Company’s income tax returns. The effect on deferred taxes of a change in tax rates is recognized in income in the period of change. A valuation allowance is recognized as a reduction to deferred tax assets when management determines it is more likely than not that deferred tax assets will not be available to offset future income tax liabilities.

Accounting standards for income taxes prescribe a recognition threshold and measurement process for financial statement recognition and measurement of uncertain tax positions taken or expected to be taken in a tax return, and also provide guidance on the de-recognition of previously recorded benefits and their classification, as well as the proper recording of interest and penalties, accounting in interim periods, disclosures and transition. The Company periodically reviews its income tax positions based on tax laws and regulations and financial reporting considerations, and records adjustments as appropriate. This review takes into consideration the status of current taxing authorities’ examinations of the Company’s tax returns, recent positions taken by the taxing authorities on similar transactions, if any, and the overall tax environment.

As of March 31, 2018, the Company had an insignificant amount of unrecognized tax benefits for uncertain tax positions, none of which would materially affect the effective tax rate if recognized. The Company does not anticipate that the amount of unrecognized tax benefits will significantly increase or decrease in the next twelve months. The Company’s policy is to recognize interest and penalties on unrecognized tax benefits in the income tax expense. The Company files consolidated income tax returns in the U.S. federal jurisdiction and in the Oregon, California, Utah and Idaho state jurisdictions.

In December 2017, the federal government enacted the Tax Cuts and Jobs Act (2017 Tax Act), which among other provisions, reduced the federal marginal corporate income tax rate from 35% to 21%. As a result of the passage of the 2017 Tax Act, the Company recorded a $42.6 million charge in December 2017, for the revaluation of its net deferred tax to account for the future impact of the decrease in the corporate income tax rate and other provisions of the legislation. The charge was recorded as an increase to tax expense and reduction of the net deferred asset. The Company’s 2017 financial results reflected the income tax effects of the 2017 Tax Act for which the accounting was complete and provisional amounts for those specific income tax effects of the 2017 Tax Act for which the accounting is incomplete but a reasonable estimate could be determined. As a result, these amounts could be adjusted during the measurement period, which will end in December 2018.  The Company did not identify any items for which the income tax effects of the 2017 Tax Act have not been completed and a reasonable estimate could not be determined as of December 31, 2017. The $42.6 million charge recorded by the Company includes $4.2 million of provisional income tax expense related to Alternative Minimum Tax (AMT) credits that are limited under Internal Revenue Code of 1986 Section 383, which resulted in a reduction in the AMT deferred tax asset.  The utilization of the limited AMT credits under the refundable AMT credit law is uncertain and will require further analysis as guidance is released during 2018. No adjustment to the provisional amounts was recorded during the quarter ended March 31, 2018.

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Tax credit investments: The Company invests in low income housing tax credit funds that are designed to generate a return primarily through the realization of federal tax credits. The Company accounts for these investments by amortizing the cost of tax credit investments over the life of the investment using a proportional amortization method and tax credit investment amortization expense is a component of the provision for income taxes.

The following table presents the balances of the Company’s tax credit investments and related unfunded commitments at March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018		December 31, 2017
Tax credit investments	$	9,223	$	7,311
Unfunded commitments—tax credit investments	5,483		4,417

The following table presents other information related to the Company's tax credit investments for the three months ended March 31, 2018 and 2017 (in thousands):

	Three Months Ended March 31,
	2018		2017
Tax credits and other tax benefits recognized	$	364	$	285
Tax credit amortization expense included in provision for income taxes	288		199

Note 10:  CALCULATION OF WEIGHTED AVERAGE SHARES OUTSTANDING FOR EARNINGS PER SHARE (EPS)

The following table reconciles basic to diluted weighted shares outstanding used to calculate earnings per share data (in thousands, except shares and per share data):

	Three Months Ended March 31,
	2018		2017
Net income	$	28,790	$	23,793
Basic weighted average shares outstanding	32,397,568		32,933,444
Plus unvested restricted stock	118,888		118,015
Diluted weighted shares outstanding	32,516,456		33,051,459
Earnings per common share
Basic	$	0.89	$	0.72
Diluted	$	0.89	$	0.72

As of March 31, 2018, warrants expiring on November 21, 2018 to purchase up to $18.6 million (243,998 shares, post reverse-split) of common stock were not included in the computation of diluted earnings per share because the exercise price of the warrants was greater than the average market price of common shares.

Note 11:  STOCK-BASED COMPENSATION PLANS

The Company operates the following stock-based compensation plans as approved by its shareholders:

• 2012 Restricted Stock and Incentive Bonus Plan (2012 Restricted Stock Plan).

• 2014 Omnibus Incentive Plan (the 2014 Plan).

The purpose of these plans is to promote the success and enhance the value of the Company by providing a means for attracting and retaining highly skilled employees, officers and directors of Banner Corporation and its affiliates and linking their personal interests with those of the Company's shareholders. Under these plans the Company currently has outstanding restricted stock share grants and restricted stock unit grants.

2012 Restricted Stock and Incentive Bonus Plan

Under the 2012 Restricted Stock Plan, which was initially approved on April 24, 2012, the Company is authorized to issue up to 300,000 shares of its common stock to provide a means for attracting and retaining highly skilled officers of Banner Corporation and its affiliates. Shares granted under the 2012 Restricted Stock Plan have a minimum vesting period of three years. The 2012 Restricted Stock Plan will continue in effect for a term of ten years, after which no further awards may be granted.

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The 2012 Restricted Stock Plan was amended on April 23, 2013 to provide for the ability to grant (1) cash-denominated incentive-based awards payable in cash or common stock, including those that are eligible to qualify as qualified performance-based compensation for the purposes of Section 162(m) of the Code and (2) restricted stock awards that qualify as qualified performance-based compensation for the purposes of Section 162(m) of the Code. Vesting requirements may include time-based conditions, performance-based conditions, or market-based conditions.

As of March 31, 2018, the Company had granted 270,467 shares of restricted stock from the 2012 Restricted Stock Plan (as amended and restated), of which 253,865 shares had vested and 16,602 shares remain unvested.

2014 Omnibus Incentive Plan

The 2014 Plan was approved by shareholders on April 22, 2014. The 2014 Plan provides for the grant of incentive stock options, non-qualified stock options, stock appreciation rights, restricted stock, restricted stock units, performance shares, performance units, other stock-based awards and other cash awards, and provides for vesting requirements which may include time-based or performance-based conditions. The Company reserved 900,000 shares of its common stock for issuance under the 2014 Plan in connection with the exercise of awards. As of March 31, 2018, 346,914 restricted stock shares and 34,975 restricted stock units have been granted under the 2014 Plan of which 123,885 restricted stock shares and 26,154 restricted stock units have vested.

The expense associated with all restricted stock grants (including restricted stock shares and restricted stock units) was $1.3 million and $1.1 million for the three-month periods ended March 31, 2018 and March 31, 2017, respectively. Unrecognized compensation expense for these awards as of March 31, 2018 was $6.6 million and will be amortized over the next 28 months.

Note 12:  COMMITMENTS AND CONTINGENCIES

Lease Commitments — The Company leases 107 buildings and offices under non-cancelable operating leases. The leases contain various provisions for increases in rental rates, based either on changes in the published Consumer Price Index or a predetermined escalation schedule. Substantially all of the leases provide the Company with the option to extend the lease term one or more times following expiration of the initial term.

Financial Instruments with Off-Balance-Sheet Risk — The Company has financial instruments with off-balance-sheet risk generated in the normal course of business to meet the financing needs of our customers.  These financial instruments include commitments to extend credit, commitments related to standby letters of credit, commitments to originate loans, commitments to sell loans, commitments to buy and sell securities.  These instruments involve, to varying degrees, elements of credit and interest rate risk similar to the risk involved in on-balance-sheet items recognized in our Consolidated Statements of Financial Condition.

Our exposure to credit loss in the event of nonperformance by the other party to the financial instrument from commitments to extend credit and standby letters of credit is represented by the contractual notional amount of those instruments.  We use the same credit policies in making commitments and conditional obligations as for on-balance-sheet instruments.

Outstanding commitments for which no asset or liability for the notional amount has been recorded consisted of the following at the dates indicated (in thousands):

	Contract or Notional Amount
	March 31, 2018		December 31, 2017
Commitments to extend credit	$	2,386,614	$	2,300,593
Standby letters of credit and financial guarantees	13,958		14,579
Commitments to originate loans	66,479		56,030
Risk participation agreement	4,141		11,451
Derivatives also included in Note 13:
Commitments to originate loans held for sale	47,848		43,502
Commitments to sell loans secured by one- to four-family residential properties	38,409		33,069
Commitments to sell securities related to mortgage banking activities	107,500		57,000

Commitments to extend credit are agreements to lend to a customer, as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Many of the commitments may expire without being drawn upon; therefore, the total commitment amounts do not necessarily represent future cash requirements. Each customer’s creditworthiness is evaluated on a case-by-case basis.  The amount of collateral obtained, if deemed necessary upon extension of credit, is based on management’s credit evaluation of the customer. The type of collateral held varies, but may include accounts receivable, inventory, property, plant and equipment, and income producing commercial properties. The Company's reserve for unfunded loan commitments was $2.4 million and $2.4 million at March 31, 2018 and December 31, 2017, respectively.

Standby letters of credit are conditional commitments issued to guarantee a customer’s performance or payment to a third party.  The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. Through the acquisition of

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AmericanWest, Banner Bank assumed a risk participation agreement. Under the risk participation agreement, Banner Bank guarantees the financial performance of a borrower on the participated portion of an interest rate swap on a loan.

Interest rates on residential one- to four-family mortgage loan applications are typically rate locked (committed) to customers during the application stage for periods ranging from 30 to 60 days, the most typical period being 45 days. Traditionally, these loan applications with rate lock commitments had the pricing for the sale of these loans locked with various qualified investors under a best-efforts delivery program at or near the time the interest rate is locked with the customer. The Bank then attempts to deliver these loans before their rate locks expired. This arrangement generally required delivery of the loans prior to the expiration of the rate lock. Delays in funding the loans required a lock extension. The cost of a lock extension at times was borne by the customer and at times by the Bank. These lock extension costs have not had a material impact to our operations. The Company enters into forward commitments at specific prices and settlement dates to deliver either: (1) residential mortgage loans for purchase by secondary market investors (i.e., Freddie Mac or Fannie Mae), or (2) mortgage-backed securities to broker/dealers. The purpose of these forward commitments is to offset the movement in interest rates between the execution of its residential mortgage rate lock commitments with borrowers and the sale of those loans to the secondary market investor. There were nocounterparty default losses on forward contracts during the three months ended March 31, 2018 or March 31, 2017. Market risk with respect to forward contracts arises principally from changes in the value of contractual positions due to changes in interest rates. The Company limits its exposure to market risk by monitoring differences between commitments to customers and forward contracts with market investors and securities broker/dealers. In the event the Company has forward delivery contract commitments in excess of available mortgage loans, the transaction is completed by either paying or receiving a fee to or from the investor or broker/dealer equal to the increase or decrease in the market value of the forward contract.

In the normal course of business, the Company and/or its subsidiaries have various legal proceedings and other contingent matters outstanding.  These proceedings and the associated legal claims are often contested and the outcome of individual matters is not always predictable.  These claims and counter-claims typically arise during the course of collection efforts on problem loans or with respect to action to enforce liens on properties in which the Banks hold a security interest.  Based upon the information known to management at this time, the Company and the Banks are not a party to any legal proceedings that management believes would have a material adverse effect on the results of operations or consolidated financial position at March 31, 2018.

In connection with certain asset sales, the Banks typically make representations and warranties about the underlying assets conforming to specified guidelines.  If the underlying assets do not conform to the specifications, the Bank may have an obligation to repurchase the assets or indemnify the purchaser against any loss.  The Banks believe that the potential for material loss under these arrangements is remote.  Accordingly, the fair value of such obligations is not material.

NOTE 13: DERIVATIVES AND HEDGING

The Company, through its Banner Bank subsidiary, is party to various derivative instruments that are used for asset and liability management and customer financing needs. Derivative instruments are contracts between two or more parties that have a notional amount and an underlying variable, require no net investment and allow for the net settlement of positions. The notional amount serves as the basis for the payment provision of the contract and takes the form of units, such as shares or dollars. The underlying variable represents a specified interest rate, index, or other component. The interaction between the notional amount and the underlying variable determines the number of units to be exchanged between the parties and influences the market value of the derivative contract. The Company obtains dealer quotations to value its derivative contracts.

The Company's predominant derivative and hedging activities involve interest rate swaps related to certain term loans and forward sales contracts associated with mortgage banking activities. Generally, these instruments help the Company manage exposure to market risk and meet customer financing needs. Market risk represents the possibility that economic value or net interest income will be adversely affected by fluctuations in external factors such as market-driven interest rates and prices or other economic factors.

Derivatives Designated in Hedge Relationships

The Company's fixed rate loans result in exposure to losses in value or net interest income as interest rates change. The risk management objective for hedging fixed rate loans is to effectively convert the fixed rate received to a floating rate. The Company has hedged exposure to changes in the fair value of certain fixed rate loans through the use of interest rate swaps. For a qualifying fair value hedge, changes in the value of the derivatives are recognized in current period earnings along with the corresponding changes in the fair value of the designated hedged item attributable to the risk being hedged.

Under a prior program, customers received fixed interest rate commercial loans and the Banner Bank subsequently hedged that fixed rate loan by entering into an interest rate swap with a dealer counterparty. Banner Bank receives fixed rate payments from the customers on the loans and makes similar fixed rate payments to the dealer counterparty on the swaps in exchange for variable rate payments based on the one-month LIBOR index. Some of these interest rate swaps are designated as fair value hedges. Through application of the “short cut method of accounting,” there is an assumption that the hedges are effective. Banner Bank discontinued originating interest rate swaps under this program in 2008.

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As of March 31, 2018 and December 31, 2017, the notional values or contractual amounts and fair values of the Company's derivatives designated in hedge relationships were as follows (in thousands):

	Asset Derivatives								Liability Derivatives
	March 31, 2018				December 31, 2017				March 31, 2018				December 31, 2017
	Notional/ Contract Amount		Fair    Value (1)		Notional/ Contract Amount		Fair    Value (1)		Notional/ Contract Amount		Fair    Value (2)		Notional/ Contract Amount		Fair    Value (2)
Interest rate swaps	$	4,257	$	355	$	4,350	$	447	$	4,257	$	355	$	4,350	$	447

⁽¹⁾  Included in Loans receivable on the Consolidated Statements of Financial Condition.

⁽²⁾  Included in Other liabilities on the Consolidated Statements of Financial Condition.

Derivatives Not Designated in Hedge Relationships

Interest Rate Swaps: Banner Bank uses an interest rate swap program for commercial loan customers, that provides the client with a variable rate loan and enters into an interest rate swap in which the client locks in a fixed rate and the Bank receives a variable rate payment. The Bank offsets its risk exposure by entering into an offsetting interest rate swap with a dealer counterparty for the same notional amount and length of term as the client interest rate swap providing the dealer counterparty with a fixed-rate payment in exchange for a variable-rate payment. These swaps do not qualify as designated hedges; therefore, each swap is accounted for as a free standing derivative.

Mortgage Banking: In the normal course of business, the Company sells originated one- to four-family and multifamily mortgage loans into the secondary mortgage loan markets. During the period of loan origination and prior to the sale of the loans in the secondary market, the Company has exposure to movements in interest rates associated with written interest rate lock commitments with potential borrowers to originate one- to four-family loans that are intended to be sold and for closed one- to four-family and multifamily mortgage loans held for sale that are awaiting sale and delivery into the secondary market. The Company attempts to economically hedge the risk of changing interest rates associated with these mortgage loan commitments by entering into forward sales contracts to sell one- to four-family and multifamily mortgage loans or mortgage-backed securities to broker/dealers as specific prices and dates.

As of March 31, 2018 and December 31, 2017, the notional values or contractual amounts and fair values of the Company's derivatives not designated in hedge relationships were as follows (in thousands):

	Asset Derivatives								Liability Derivatives
	March 31, 2018				December 31, 2017				March 31, 2018				December 31, 2017
	Notional/ Contract Amount		Fair    Value (1)		Notional/ Contract Amount		Fair    Value (1)		Notional/ Contract Amount		Fair    Value (2)		Notional/ Contract Amount		Fair    Value (2)
Interest rate swaps	$	272,627	$	4,236	$	285,047	$	4,636	$	272,627	$	4,236	$	285,047	$	4,636
Mortgage loan commitments	30,799		294		29,739		225		17,049		153		13,763		153
Forward sales contracts	98,409		389		43,069		298		47,500		107		47,000		48
	$	401,835	$	4,919	$	357,855	$	5,159	$	337,176	$	4,496	$	345,810	$	4,837

⁽¹⁾  Included in Other assets on the Consolidated Statements of Financial Condition, with the exception of certain interest swaps and mortgage loan commitments (with a fair value of $381,000 at March 31, 2018 and $499,000 at December 31, 2017), which are included in Loans receivable.

⁽²⁾  Included in Other liabilities on the Consolidated Statements of Financial Condition.

Gains (losses) recognized in income on derivatives not designated in hedge relationships for the three months ended March 31, 2018 and 2017 were as follows (in thousands):

	Location on Consolidated Statements of Operations	Three Months Ended March 31,
		2018			2017
Mortgage loan commitments	Mortgage banking operations	$	68		$	361
Forward sales contracts	Mortgage banking operations	(11		)	(474		)
		$	57		$	(113	)

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The Company is exposed to credit-related losses in the event of nonperformance by the counterparty to these agreements. Credit risk of the financial contract is controlled through the credit approval, limits, and monitoring procedures and management does not expect the counterparties to fail their obligations.

In connection with the interest rate swaps between Banner Bank and the dealer counterparties, the agreements contain a provision where if Banner Bank fails to maintain its status as a well/adequately capitalized institution, then the counterparty could terminate the derivative positions and Banner Bank would be required to settle its obligations. Similarly, Banner Bank could be required to settle its obligations under certain of its agreements if specific regulatory events occur, such as a publicly issued prompt corrective action directive, cease and desist order, or a capital maintenance agreement that required Banner Bank to maintain a specific capital level. If Banner Bank had breached any of these provisions at March 31, 2018 or December 31, 2017, it could have been required to settle its obligations under the agreements at the termination value. As of March 31, 2018 and December 31, 2017, the termination value of derivatives in a net liability position related to these agreements was $800,000 and $3.7 million, respectively. The Company generally posts collateral against derivative liabilities in the form of cash, government agency-issued bonds, mortgage-backed securities, or commercial mortgage-backed securities. Collateral posted against derivative liabilities was $17.1 million and $16.9 million as of March 31, 2018 and December 31, 2017, respectively.

Derivative assets and liabilities are recorded at fair value on the balance sheet and do not take into account the effects of master netting agreements. Master netting agreements allow the Company to settle all derivative contracts held with a single counterparty on a net basis and to offset net derivative positions with related collateral where applicable.

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The following tables illustrate the potential effect of the Company's derivative master netting arrangements, by type of financial instrument, on the Company's Consolidated Statements of Financial Condition as of March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018
							Gross Amounts of Financial Instruments Not Offset in the Consolidated Statements of Financial Condition
	Gross Amounts Recognized		Amounts offset in the Statement of Financial Condition		Net Amounts in the Statement of Financial Condition		Netting Adjustment Per Applicable Master Netting Agreements			Fair Value of Financial Collateral in the Statement of Financial Condition			Net Amount
Derivative assets
Interest rate swaps	$	4,592	$	—	$	4,592	$	(123	)	$	—		$	4,469
	$	4,592	$	—	$	4,592	$	(123	)	$	—		$	4,469
Derivative liabilities
Interest rate swaps	$	4,592	$	—	$	4,592	$	(123	)	$	(767	)	$	3,702
	$	4,592	$	—	$	4,592	$	(123	)	$	(767	)	$	3,702
	December 31, 2017
							Gross Amounts of Financial Instruments Not Offset in the Consolidated Statements of Financial Condition
	Gross Amounts Recognized		Amounts offset in the Statement of Financial Condition		Net Amounts in the Statement of Financial Condition		Netting Adjustment Per Applicable Master Netting Agreements			Fair Value of Financial Collateral in the Statement of Financial Condition			Net Amount
Derivative assets
Interest rate swaps	$	5,083	$	—	$	5,083	$	(656	)	$	—		$	4,427
	$	5,083	$	—	$	5,083	$	(656	)	$	—		$	4,427
Derivative liabilities
Interest rate swaps	$	5,083	$	—	$	5,083	$	(656	)	$	(3,467	)	$	960
	$	5,083	$	—	$	5,083	$	(656	)	$	(3,467	)	$	960

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NOTE 14: REVENUE FROM CONTRACTS WITH CUSTOMERS

Disaggregation of Revenue:

Deposit fees and other service charges for the three months ended March 31, 2018 and 2017 are summarized as follows (in thousands):

	Three Months Ended March 31,
	2018			2017
Deposit service charges	$	4,320		$	4,062
Debit and credit interchange fees	7,320			6,538
Debit and credit card expense	(1,970		)	(1,687		)
Merchant services income	2,261			2,187
Merchant services expenses	(1,804		)	(1,797		)
Other service charges	1,169			1,086
Total deposit fees and other service charges	$	11,296		$	10,389

Deposit fees and other service charges

Deposit fees and other service charges include transaction and non-transaction based deposit fees. Transaction based fees on deposit accounts are charged to deposit customers for specific services provided to the customer. These fees include such items as wire fees, official check fees, and overdraft fees. These are contract specific to each individual transaction and do not extend beyond the individual transaction. The performance obligation is completed and the fees are recognized at the time the specific transactional service is provided to the customer. Non-transactional deposit fees are typically monthly account maintenance fees charged on deposit accounts. These are day-to-day contracts that can be canceled by either party without notice. The performance obligation is satisfied and the fees are recognized on a monthly basis after the service period is completed.

Debit and credit card interchange income and expenses

Debit and credit card interchange income represent fees earned when a credit or debit card issued by the Banks is used to purchase goods or services at a merchant. The merchant's bank pays the Banks a default interchange rate set by MasterCard on a transaction by transaction basis. The merchant acquiring bank can stop accepting the Banks’ cards at any time and the Banks can stop further use of cards issued by them at any time. The performance obligation is satisfied and the fees are earned when the cost of the transaction is charged to the Banks cardholders’ card. Direct expenses associated with the credit and debit card are recorded as a net reduction against the interchange income.

Merchant services income

Merchant services income represents fees earned by the Banks for card payment services provided to its merchant customers. The Banks have a contract with a third party to provide card payment services to the Banks’ merchants that contract for those services. The third party provider has contracts with the Banks’ merchants to provide the card payment services. The Banks do not have a direct contractual relationship with its merchants for these services. The Banks set the rates for the services provided by the third party. The third party provider passes the payments made by the Banks’ merchants through to the Banks. The Banks, in turn, pays the third party provider for the services it provides to the Banks’ merchants. These payments to the third party provider are recorded as expenses as a net reduction against fee income. In addition, a portion of the payment received by the Banks represents interchange fees which are passed through to the card issuing bank. Income is primarily earned based on the dollar volume and number of transactions processed. The performance obligation is satisfied and the related fee is earned when each payment is accepted by the processing network.

ITEM 2 – Management’s Discussion and Analysis of Financial Condition and Results of Operations

Executive Overview

We are a bank holding company incorporated in the State of Washington which owns two subsidiary banks, Banner Bank and Islanders Bank. Banner Bank is a Washington-chartered commercial bank that conducts business from its main office in Walla Walla, Washington and, as of March 31, 2018, its 175 branch offices and 13 loan production offices located in Washington, Oregon, California, Utah and Idaho.  On October 9, 2017, Banner Bank announced that it had completed the sale of its seven Utah branches and related operations. Islanders Bank is a Washington-chartered commercial bank and conducts its business from three locations in San Juan County, Washington.  Banner Corporation is subject to regulation by the Board of Governors of the Federal Reserve System (the Federal Reserve Board).  Banner Bank and Islanders Bank (the Banks) are subject to regulation by the Washington State Department of Financial Institutions, Division of Banks and the Federal Deposit Insurance Corporation (the FDIC).  As of March 31, 2018, we had total consolidated assets of $10.32 billion, total loans of $7.56 billion, total deposits of $8.54 billion and total shareholders’ equity of $1.25 billion.

Banner Bank is a regional bank which offers a wide variety of commercial banking services and financial products to individuals, businesses and public sector entities in its primary market areas.  Islanders Bank is a community bank which offers similar banking services to individuals,

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businesses and public entities located in the San Juan Islands.  The Banks’ primary business is that of traditional banking institutions, accepting deposits and originating loans in locations surrounding their offices in portions of Washington, Oregon, California and Idaho.  Banner Bank is also an active participant in the secondary market, engaging in mortgage banking operations largely through the origination and sale of one- to four-family and multifamily residential loans.  Lending activities include commercial business and commercial real estate loans, agriculture business loans, construction and land development loans, one- to four-family and multifamily residential loans and consumer loans.

Banner Corporation's successful execution of its super community bank model and strategic initiatives has delivered solid profitability and growth. We continue to execute on our goals to maintain the Company's moderate risk profile as well as to develop and continue strong earnings momentum. Highlights of this success have included maintaining strong asset quality, outstanding client acquisition and account growth, increased non-interest-bearing deposit balances and strong revenue generation from core operations.

For the quarter ended March 31, 2018, our net income was $28.8 million, or $0.89 per diluted share, compared to net income of $23.8 million, or $0.72 per diluted share, for the quarter ended March 31, 2017. The current quarter was positively impacted by growth in interest-earning assets, improved net interest margin, the net change in investment securities carried at fair value and lower corporate federal income tax rates.

Highlights for the current quarter included additional client acquisition, solid asset quality, strong revenues from core operations, and growth in core deposits. Compared to the same quarter a year ago, we had a significant increase in net interest income, reflecting the organic growth of the Company and an improved yield on interest-earning assets.

Our operating results depend primarily on our net interest income, which is the difference between interest income on interest-earning assets, consisting primarily of loans and investment securities, and interest expense on interest-bearing liabilities, composed primarily of customer deposits, FHLB advances, other borrowings and junior subordinated debentures. Net interest income is primarily a function of our interest rate spread which is the difference between the yield earned on interest-earning assets and the rate paid on interest-bearing liabilities, as well as a function of the average balances of interest-earning assets, interest-bearing liabilities and non-interest-bearing funding sources including non-interest-bearing deposits. Our net interest income increased $4.5 million, or 5%, to $99.4 million for the quarter ended March 31, 2018, compared to $94.9 million for the same quarter one year earlier. This increase in net interest income reflects the organic growth in interest-earning assets and improved net interest margin.

Our net income also is affected by the level of our non-interest income, including deposit fees and other service charges, results of mortgage banking operations, which includes loan origination and servicing fees and gains and losses on the sale of loans, and gains and losses on the sale of loans and securities, as well as our non-interest expenses, provisions for loan losses and income tax provisions. In addition, our net income is affected by the net change in the value of certain financial instruments carried at fair value.

Our total revenues (net interest income before the provision for loan losses plus total non-interest income) for the first quarter of 2018 increased $6.8 million, or 6%, to $120.7 million, compared to $113.9 million for the same period a year earlier, as a result of increased net interest income as well as an increase in fair value on certain securities held for trading.  Our total non-interest income, which is a component of total revenue and includes the net gain on sale of securities and changes in the value of financial instruments carried at fair value, was $21.4 million for the quarter ended March 31, 2018, compared to $19.0 million for the quarter ended March 31, 2017.

Our total revenues, excluding changes in the fair value of financial instruments and the net gain on sale of securities, which we believe are more indicative of our core operations*, also were strong at $117.4 million for the quarter ended March 31, 2018, a $2.8 million, or 2%, increase compared to $114.6 million for the same period a year earlier.

Our non-interest expense increased in the first quarter of 2018 compared to a year earlier largely as a result of increased salary and benefits related to enhanced regulatory requirements attributable to compliance and risk management infrastructure build-out as a result of preparations for the crossing the $10 billion asset threshold as well as normal wage increases. Also contributing to the increase in non-interest expense was the prior year period included a gain on sale of REO recorded as a reduction to non-interest expense.  Non-interest expense was $81.7 million for the quarter ended March 31, 2018, compared to $76.3 million for the same quarter a year earlier.

Although our credit quality metrics continue to reflect our moderate risk profile, we recorded a $2.0 million provision for loan losses in the quarter ended March 31, 2018, the same amount recorded in the first quarter a year ago. The allowance for loan losses at March 31, 2018 was $92.2 million, representing 410% of non-performing loans. Non-performing loans were $22.5 million at March 31, 2018, compared to $27.0 million at December 31, 2017 and $18.1 million a year earlier. (See Note 4, Loans Receivable and the Allowance for Loan Losses, as well as “Asset Quality” below in this Form 10-Q.)

Through the fourth quarter of 2017 our strategy was to maintain assets below $10.0 billion at December 31, 2017. Remaining below $10.0 billion in assets through the year-end had the beneficial effect of delaying the adverse impact on our future operating results from certain enhanced regulatory compliance requirements and the Durbin Amendment cap on interchange fees. Beginning in early 2018, we renewed our strategy of funding additional investment securities purchases and other interest-earning assets with deposits and borrowings to leverage our capital, resulting in a $554.1 million increase in total assets during the first three months of 2018, further enhancing our revenue growth.

*Non-GAAP financial measures: Non-interest income, revenues and other earnings information excluding fair value adjustments, OTTI losses or recoveries, and gains or losses on the sale of securities are non-GAAP financial measures.  Management has presented these and other non-GAAP financial measures in this discussion and analysis because it believes that they provide useful and comparative information to assess trends in our core operations and in understanding our capital position.  However, these non-GAAP financial measures are supplemental and

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are not a substitute for any analysis based on GAAP. Where applicable, we have also presented comparable earnings information using GAAP financial measures.  For a reconciliation of these non-GAAP financial measures, see the tables below.  Because not all companies use the same calculations, our presentation may not be comparable to other similarly titled measures as calculated by other companies. See “Comparison of Results of Operations for the Three Months Ended March 31, 2018 and 2017” for more detailed information about our financial performance.

The following tables set forth reconciliations of non-GAAP financial measures discussed in this report (in thousands):

	For the Three Months Ended March 31,
	2018			2017
REVENUE FROM CORE OPERATIONS:
Net interest income	$	99,373		$	94,854
Total non-interest income	21,362			19,048
Total GAAP revenue	120,735			113,902
Exclude net gain on sale of securities	(4		)	(13		)
Exclude change in valuation of financial instruments carried at fair value	(3,308		)	688
Revenue from core operations (non-GAAP)	$	117,423		$	114,577

NON-INTEREST INCOME FROM CORE OPERATIONS:
Total non-interest income (GAAP)	$	21,362		$	19,048
Exclude net gain on sale of securities	(4		)	(13		)
Exclude change in valuation of financial instruments carried at fair value	(3,308		)	688
Total non-interest income from core operations (non-GAAP)	$	18,050		$	19,723

	For the Three Months Ended March 31,
	2018			2017
EARNINGS FROM CORE OPERATIONS:
Net income (GAAP)	$	28,790		$	23,793
Exclude net gain on sale of securities	(4		)	(13		)
Exclude change in valuation of financial instruments carried at fair value	(3,308		)	688
Exclude related tax benefit	795			(243		)
Total earnings from core operations (non-GAAP)	$	26,273		$	24,225
Diluted earnings per share (GAAP)	$	0.89		$	0.72
Diluted core earnings per share (non-GAAP)	$	0.81		$	0.73

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	For the Three Months Ended March 31,
	2018			2017
ADJUSTED EFFICIENCY RATIO
Non-interest expense (GAAP)	$	81,706		$	76,281
Exclude CDI amortization	(1,382		)	(1,624		)
Exclude Business and Occupancy (B&O) tax expense	(713		)	(799		)
Exclude REO (loss) gain	(439		)	966
Adjusted non-interest expense (non-GAAP)	$	79,172		$	74,824
Net interest income (GAAP)	$	99,373		$	94,854
Non-interest income (GAAP)	21,362			19,048
Total revenue	120,735			113,902
Exclude net gain on sale of securities	(4		)	(13		)
Exclude net change in valuation of financial instruments carried at fair value	(3,308		)	688
Adjusted revenue (non-GAAP)	$	117,423		$	114,577
Efficiency ratio (GAAP)	67.67		%	66.97		%
Adjusted efficiency ratio (non-GAAP)	67.42		%	65.30		%

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The ratio of tangible common shareholders’ equity to tangible assets is also a non-GAAP financial measure. We calculate tangible common equity by excluding goodwill and other intangible assets from shareholders’ equity. We calculate tangible assets by excluding the balance of goodwill and other intangible assets from total assets. We believe that this is consistent with the treatment by our bank regulatory agencies, which exclude goodwill and other intangible assets from the calculation of risk-based capital ratios. Management believes that this non-GAAP financial measure provides information to investors that is useful in understanding the basis of our capital position (dollars in thousands).

TANGIBLE COMMON SHAREHOLDERS' EQUITY TO TANGIBLE ASSETS
	March 31, 2018			December 31, 2017			March 31, 2017
Shareholders’ equity (GAAP)	$	1,254,123		$	1,272,626		$	1,323,404
Exclude goodwill and other intangible assets, net	263,910			265,314			273,071
Tangible common shareholders’ equity (non-GAAP)	$	990,213		$	1,007,312		$	1,050,333
Total assets (GAAP)	$	10,317,264		$	9,763,209		$	10,068,378
Exclude goodwill and other intangible assets, net	263,910			265,314			273,071
Total tangible assets (non-GAAP)	$	10,053,354		$	9,497,895		$	9,795,307
Common shareholders’ equity to total assets (GAAP)	12.16		%	13.03		%	13.14		%
Tangible common shareholders’ equity to tangible assets (non-GAAP)	9.85		%	10.61		%	10.72		%
TANGIBLE COMMON SHAREHOLDERS' EQUITY PER SHARE
Tangible common shareholders' equity (non-GAAP)	$	990,213		$	1,007,312		$	1,050,333
Common shares outstanding at end of period	32,423,673			32,726,485			33,152,864
Common shareholders' equity (book value) per share (GAAP)	$	38.68		$	38.89		$	39.92
Tangible common shareholders' equity (tangible book value) per share (non-GAAP)	$	30.54		$	30.78		$	31.68

Management’s Discussion and Analysis of Financial Condition and Results of Operations is intended to assist in understanding our financial condition and results of operations.  The information contained in this section should be read in conjunction with the Consolidated Financial Statements and accompanying Selected Notes to the Consolidated Financial Statements contained in Item 1 of this Form 10-Q.

Summary of Critical Accounting Policies

In the opinion of management, the accompanying Consolidated Statements of Financial Condition and related Consolidated Statements of Operations, Comprehensive Income, Changes in Shareholders’ Equity and Cash Flows reflect all adjustments (which include reclassification and normal recurring adjustments) that are necessary for a fair presentation in conformity with GAAP.  The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect amounts reported in the financial statements.

Various elements of our accounting policies, by their nature, are inherently subject to estimation techniques, valuation assumptions and other subjective assessments.  In particular, management has identified several accounting policies that, due to the judgments, estimates and assumptions inherent in those policies, are critical to an understanding of our financial statements.  These policies relate to (i) the methodology for the recognition of interest income, (ii) determination of the provision and allowance for loan losses, (iii) the valuation of financial assets and liabilities recorded at fair value, including OTTI losses, (iv) the valuation of intangibles, such as goodwill, core deposit intangibles and mortgage servicing rights, (v) the valuation of real estate held for sale, (vi) the valuation of assets and liabilities acquired in business combinations and subsequent recognition of related income and expense, and (vii) the valuation of or recognition of deferred tax assets and liabilities.  These policies and judgments, estimates and assumptions are described in greater detail below.  Management believes the judgments, estimates and assumptions used in the preparation of the financial statements are appropriate based on the factual circumstances at the time.  However, given the sensitivity of the financial statements to these critical accounting policies, the use of other judgments, estimates and assumptions could result in material differences in our results of operations or financial condition.  Further, subsequent changes in economic or market conditions could have a material impact on these estimates and our financial condition and operating results in future periods.  There have been no significant changes in our application of accounting policies since December 31, 2017.  For additional information concerning critical accounting policies, see the Selected Notes to the Consolidated Financial Statements and the following:

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Interest Income:   (Notes 3 and 4)  Interest on loans and securities is accrued as earned unless management doubts the collectability of the asset or the unpaid interest.  Interest accruals on loans are generally discontinued when loans become 90 days past due for payment of interest and the loans are then placed on nonaccrual status.  All previously accrued but uncollected interest is deducted from interest income upon transfer to nonaccrual status.  For any future payments collected, interest income is recognized only upon management’s assessment that there is a strong likelihood that the full amount of a loan will be repaid or recovered.  Management's assessment of the likelihood of full repayment involves judgment including determining the fair value of the underlying collateral which can be impacted by the economic environment. A loan may be put on nonaccrual status sooner than this policy would dictate if, in management’s judgment, the amounts owed, principal or interest, may be uncollectable.  While less common, similar interest reversal and nonaccrual treatment is applied to investment securities if their ultimate collectability becomes questionable.

Provision and Allowance for Loan Losses:  (Note 4)  The methodology for determining the allowance for loan losses is considered a critical accounting policy by management because of the high degree of judgment involved, the subjectivity of the assumptions used, and the potential for changes in the economic environment that could result in changes to the amount of the recorded allowance for loan losses. The provision for loan losses reflects the amount required to maintain the allowance loan for losses at an appropriate level based upon management’s evaluation of the adequacy of general and specific loss reserves.  Among the material estimates required to establish the allowance for loan losses are: overall economic conditions; value of collateral; strength of guarantors; loss exposure at default; the amount and timing of future cash flows on impaired loans; and determination of loss factors to be applied to the various elements of the portfolio. All of these estimates are susceptible to significant change. We have established systematic methodologies for the determination of the adequacy of our allowance for loan losses. The methodologies are set forth in a formal policy and take into consideration the need for an overall general valuation allowance as well as specific allowances that are tied to individual problem loans. We increase our allowance for loan losses by charging provisions for probable loan losses against our income.

The allowance for loan losses is maintained at a level sufficient to provide for probable losses based on evaluating known and inherent risks in the loan portfolio and upon our continuing analysis of the factors underlying the quality of the loan portfolio.  These factors include, among others, changes in the size and composition of the loan portfolio, delinquency rates, actual loan loss experience, current and economic conditions, detailed analysis of individual loans for which full collectability may not be assured, and determination of the existence and realizable value of the collateral and guarantees securing the loans.  Realized losses related to specific assets are applied as a reduction of the carrying value of the assets and charged immediately against the allowance for loan loss reserve.  Recoveries on previously charged off loans are credited to the allowance for loan losses.  The reserve is based upon factors and trends identified by us at the time financial statements are prepared.  Although we use the best information available, future adjustments to the allowance for loan losses may be necessary due to economic, operating, regulatory and other conditions beyond our control.  The adequacy of general and specific reserves is based on our continuing evaluation of the pertinent factors underlying the quality of the loan portfolio as well as individual review of certain large balance loans. Loans are considered impaired when, based on current information and events, we determine that it is probable that we will be unable to collect all amounts due according to the contractual terms of the loan agreement.  Factors involved in determining impairment include, but are not limited to, the financial condition of the borrower, the value of the underlying collateral less selling costs and the current status of the economy.  Impaired loans are measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate or, as a practical expedient, at the loan’s observable market price or the fair value of collateral if the loan is collateral dependent.  We continue to assess the collateral of these impaired loans and update our appraisals on these loans on an annual basis. To the extent the property values continue to decline, there could be additional losses on these impaired loans, which may be material. Subsequent changes in the value of impaired loans are included within the provision for loan losses in the same manner in which impairment initially was recognized or as a reduction in the provision that would otherwise be reported.  Large groups of smaller-balance homogeneous loans are collectively evaluated for impairment.  Loans that are collectively evaluated for impairment include residential real estate and consumer loans and, as appropriate, smaller balance non-homogeneous loans.  Larger balance non-homogeneous residential construction and land, commercial real estate, commercial business loans and unsecured loans are individually evaluated for impairment.  

Our methodology for assessing the appropriateness of the allowance for loan losses consists of several key elements, which include specific allowances, an allocated formula allowance and an unallocated allowance.  Losses on specific loans are provided for when the losses are probable and estimable.  General loan loss reserves are established to provide for inherent loan portfolio risks not specifically provided for.  The level of general reserves is based on analysis of potential exposures existing in our loan portfolio including evaluation of historical trends, current market conditions and other relevant factors identified by us at the time the financial statements are prepared.  The formula allowance is calculated by applying loss factors to outstanding loans, excluding those loans that are subject to individual analysis for specific allowances.  Loss factors are based on our historical loss experience adjusted for significant environmental considerations, including the experience of other banking organizations, which in our judgment affect the collectability of the loan portfolio as of the evaluation date.  The unallocated allowance is based upon our evaluation of various factors that are not directly measured in the determination of the formula and specific allowances.  This methodology may result in actual losses or recoveries differing significantly from the allowance for loan losses in the Consolidated Financial Statements.

While we believe the estimates and assumptions used in our determination of the adequacy of the allowance for loan losses are reasonable, there can be no assurance that such estimates and assumptions will not be proven incorrect in the future, or that the actual amount of future provisions will not exceed the amount of past provisions or that any increased provisions that may be required will not adversely impact our financial condition and results of operations.  In addition, the determination of the amount of the Banks’ allowance for loan losses is subject to review by bank regulators as part of the routine examination process, which may result in the adjustment of reserves based upon their judgment of information available to them at the time of their examination.

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Fair Value Accounting and Measurement: (Note 8)  We use fair value measurements to record fair value adjustments to certain financial assets and liabilities and to determine fair value disclosures.  We include in the Notes to the Consolidated Financial Statements information about the extent to which fair value is used to measure financial assets and liabilities, the valuation methodologies used and the impact on our results of operations and financial condition.  Additionally, for financial instruments not recorded at fair value we disclose, where required, our estimate of their fair value.  

Acquired Loans:(Note 4)Purchased loans, including loans acquired in business combinations, are recorded at their fair value at the acquisition date. Credit discounts are included in the determination of fair value; therefore, an allowance for loan losses is not recorded at the acquisition date. Establishing the fair value of acquired loan involves a significant amount of judgment, including determining the credit discount. The credit discount is based upon historical data adjusted for current economic conditions and other factors. If any of these assumptions are inaccurate actual credit losses could vary significantly from the credit discount used to calculate the fair value of the acquired loans. Acquired loans are evaluated upon acquisition and classified as either purchased credit-impaired or purchased non-credit-impaired. Purchased credit-impaired (PCI) loans reflect credit deterioration since origination such that it is probable at acquisition that the Company will be unable to collect all contractually required payments. The accounting for PCI loans is periodically updated for changes in cash flow expectations, and reflected in interest income over the life of the loans as accretable yield. Any subsequent decreases in expected cash flows attributable to credit deterioration are recognized by recording a provision for loan losses.

For purchased non-credit-impaired loans, the difference between the fair value and unpaid principal balance of the loan at the acquisition date is amortized or accreted to interest income over the life of the loans. Any subsequent deterioration in credit quality is recognized by recording a provision for loan losses.

Goodwill: (Note 6) Goodwill represents the excess of the purchase consideration paid over the fair value of the assets acquired, net of the fair values of liabilities assumed in a business combination and is not amortized but is reviewed annually, or more frequently as current circumstances and conditions warrant, for impairment. An assessment of qualitative factors is completed to determine if it is more likely than not that the fair value of a reporting unit is less than its carrying amount. The qualitative assessment involves judgment by management on determining whether there have been any triggering events that have occurred which would indicate potential impairment. If the qualitative analysis concludes that further analysis is required, then a quantitative impairment test would be completed. The quantitative goodwill impairment test is used to identify the existence of impairment and the amount of impairment loss and compares the reporting unit's estimated fair values, including goodwill, to its carrying amount. If the fair value exceeds the carry amount then goodwill is not considered impaired. If the carrying amount exceeds its fair value, an impairment loss would be recognized equal to the amount of excess, limited to the amount of total goodwill allocated to the reporting unit. The impairment loss would be recognized as a charge to earnings.

Other Intangible Assets:(Note 6) Other intangible assets consists primarily of core deposit intangibles (CDI), which are amounts recorded in business combinations or deposit purchase transactions related to the value of transaction-related deposits and the value of the customer relationships associated with the deposits.  Core deposit intangibles are being amortized on an accelerated basis over a weighted average estimated useful life of eight years.  The determination of the estimated useful life of the core deposit intangible involves judgment by management. The actual life of the core deposit intangible could vary significantly from the estimated life. These assets are reviewed at least annually for events or circumstances that could impact their recoverability.  These events could include loss of the underlying core deposits, increased competition or adverse changes in the economy.  To the extent other identifiable intangible assets are deemed unrecoverable, impairment losses are recorded in other non-interest expense to reduce the carrying amount of the assets.

Other intangibles also include favorable leasehold intangibles (LHI). LHI represents the value assigned to leases assumed in an acquisition in which the lease terms are favorable compared to a market lease at the date of acquisition. LHI is amortized over the underlying lease term and is reviewed at least annually for events or circumstances that could impair the value.

Mortgage Servicing Rights: (Note 6) Mortgage servicing rights (MSRs) are recognized as separate assets when rights are acquired through purchase or through sale of loans.  Generally, purchased MSRs are capitalized at the cost to acquire the rights.  For sales of mortgage loans, the value of the MSR is estimated and capitalized.  Fair value is based on market prices for comparable mortgage servicing contracts.  The fair value of the MSRs includes an estimate of the life of the underlying loans which is affected by estimated prepayment speeds. The estimate of prepayment speeds are based on current market conditions. Actual market conditions could vary significantly from current conditions which could result in the estimated life of the underlying loans being different which would change the fair value of the MSR. Capitalized MSRs are reported in other assets and are amortized into non-interest income in proportion to, and over the period of, the estimated future net servicing income of the underlying financial assets.

Real Estate Owned Held for Sale:  (Note 5)  Property acquired by foreclosure or deed in lieu of foreclosure is recorded at the estimated fair value of the property, less expected selling costs.  Development and improvement costs relating to the property may be capitalized, while other holding costs are expensed.  The carrying value of the property is periodically evaluated by management. Property values are influenced by current economic and market conditions, changes in economic conditions could result in a decline in property value. To the extent that property values decline, allowances are established to reduce the carrying value to net realizable value.  Gains or losses at the time the property is sold are charged or credited to operations in the period in which they are realized.  The amounts the Banks will ultimately recover from real estate held for sale may differ substantially from the carrying value of the assets because of market factors beyond the Banks’ control or because of changes in the Banks’ strategies for recovering the investment.

Income Taxes and Deferred Taxes:  (Note 9)  The Company and its wholly-owned subsidiaries file consolidated U.S. federal income tax returns, as well as state income tax returns in Oregon, California, Utah and Idaho.  Income taxes are accounted for using the asset and liability

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method.  Under this method a deferred tax asset or liability is determined based on the enacted tax rates which are expected to be in effect when the differences between the financial statement carrying amounts and tax basis of existing assets and liabilities are expected to be reported in the Company’s income tax returns.  The effect on deferred taxes of a change in tax rates is recognized in income in the period that includes the enactment date.  We assess the appropriate tax treatment of transactions and filing positions after considering statutes, regulations, judicial precedent and other pertinent information and maintain tax accruals consistent with our evaluation. Changes in the estimate of accrued taxes occur periodically due to changes in tax rates, interpretations of tax laws, the status of examinations by the tax authorities and newly enacted statutory, judicial and regulatory guidance that could impact the relative merits of tax positions. These changes, when they occur, impact accrued taxes and can materially affect our operating results. A valuation allowance is required to be recognized if it is “more likely than not” that all or a portion of our deferred tax assets will not be realized. The evaluation pertaining to the tax expense and related deferred tax asset and liability balances involves a high degree of judgment and subjectivity around the measurement and resolution of these matters. The ultimate realization of the deferred tax assets is dependent upon the existence, or generation, of taxable income in the periods when those temporary differences and net operating loss and credit carryforwards are deductible.

In December 2017, the federal government enacted the Tax Cuts and Jobs Act (2017 Tax Act), which among other provisions, reduced the federal marginal corporate income tax rate from 35% to 21%. As a result of the passage of the 2017 Tax Act, the Company recorded a $42.6 million charge for the revaluation of its net deferred tax to account for the future impact of the decrease in the corporate income tax rate and other provisions of the legislation. The charge was recorded as an increase to tax expense and reduction of the net deferred asset. The Company’s financial results reflect the income tax effects of the 2017 Tax Act for which the accounting is complete and provisional amounts for those specific income tax effects of the 2017 Tax Act for which the accounting is incomplete but a reasonable estimate could be determined. As a result, these amounts could be adjusted during the measurement period, which will end in December 2018.  The Company did not identify any items for which the income tax effects of the 2017 Tax Act have not been completed and a reasonable estimate could not be determined as of December 31, 2017. The $42.6 million charge recorded by the Company includes $4.2 million of provisional income tax expense related to Alternative Minimum Tax (AMT) credits that are limited under Internal Revenue Code of 1986 ("Code") Section 383, which resulted in a reduction in the AMT deferred tax asset.  The utilization of the limited AMT credits under the refundable AMT credit law is uncertain and will require further analysis as guidance is released during 2018. No adjustment to the provisional amounts as recorded during the quarter ended March 31, 2018.

Comparison of Financial Condition at March 31, 2018 and December 31, 2017

General:  Total assets increased $554.1 million, to $10.32 billion at March 31, 2018, from $9.76 billion at December 31, 2017. The increase in total assets reflects the re-leveraging of the balance sheet following our strategy to maintain total assets below $10.0 billion through December 31, 2017. The increase was largely the result of increases in securities and loans held for sale which were primarily funded by increases in deposits and, to a lesser extent, FHLB advances.  

Loans and lending: Loans are our most significant and generally highest yielding earning assets. We attempt to maintain a portfolio of loans in a range of 90% to 95% of total deposits to enhance our revenues, while adhering to sound underwriting practices and appropriate diversification guidelines in order to maintain a moderate risk profile. We offer a wide range of loan products to meet the demands of our customers. Our lending activities are primarily directed toward the origination of real estate and commercial loans. Portfolio loans decreased $42.8 million during the three months ended March 31, 2018, primarily reflecting seasonal and other market factors resulting in decreased agricultural and commercial real estate loan balances partially offset by increased commercial business, construction and multifamily real estate loan balances. At March 31, 2018, our loan portfolio totaled $7.56 billion compared to $7.60 billion at December 31, 2017 and $7.42 billion at March 31, 2017.

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The following table sets forth the composition of the Company's loans receivable by type of loan as of the dates indicated (dollars in thousands):

							Percentage Change
	Mar 31, 2018		Dec 31, 2017		Mar 31, 2017		Prior Yr End		Prior Year
Commercial real estate:
Owner occupied	$	1,278,814	$	1,284,363	$	1,361,095	(0.4	)%	(6.0	)%
Investment properties	1,876,937		1,937,423		2,011,618		(3.1	)	(6.7	)
Multifamily real estate	321,039		314,188		254,246		2.2		26.3
Commercial construction	163,314		148,435		141,505		10.0		15.4
Multifamily construction	159,108		154,662		114,728		2.9		38.7
One- to four-family construction	434,204		415,327		366,191		4.5		18.6
Land and land development:
Residential	167,783		164,516		151,649		2.0		10.6
Commercial	24,331		24,583		29,597		(1.0	)	(17.8	)
Commercial business	1,296,691		1,279,894		1,224,541		1.3		5.9
Agricultural business including secured by farmland	307,243		338,388		313,374		(9.2	)	(2.0	)
One- to four-family real estate	833,598		848,289		802,991		(1.7	)	3.8
Consumer:
Consumer secured by one- to four-family real estate	522,826		522,931		493,495		—		5.9
Consumer-other	170,158		165,885		156,225		2.6		8.9
Total loans receivable	$	7,556,046	$	7,598,884	$	7,421,255	(0.6	)%	1.8	%

Our commercial real estate loans for both owner-occupied and investment properties totaled $3.16 billion, or 42% of our loan portfolio at March 31, 2018. In addition, multifamily residential real estate loans totaled $321.0 million and comprised 4% of our loan portfolio. Commercial real estate loans decreased by $66.0 million during the first three months of 2018, as we experienced significant payoffs of both owner occupied and investment commercial loans, while multifamily real estate loans increased by $6.9 million. Although multifamily real estate loans remain a modest portion of our loan portfolio, originations and sales of multifamily real estate loans have made a significant contribution to our mortgage banking revenue.

We also originate commercial and residential construction, land and land development loans, which totaled $948.7 million, or 13% of our loan portfolio at March 31, 2018. Our residential construction loans are a significant component of construction lending. We continue to see demand for residential construction loans in many markets where we operate. We also originate residential construction loans for owner occupants, although construction balances for these loans are modest as the loans convert to one- to four-family real estate loans upon completion of the homes and are often sold in the secondary market. Residential construction, land and land development balances increased $22.1 million, or 4%, to $602.0 million at March 31, 2018 compared to $579.8 million at December 31, 2017 and increased $84.1 million, or 16%, compared to $517.8 million at March 31, 2017. Residential construction, residential land and land development loans represented approximately 8% of our total loan portfolio at March 31, 2018.

Our commercial business lending is directed toward meeting the credit and related deposit needs of various small- to medium-sized business and agribusiness borrowers operating in our primary market areas.  In recent years, our commercial business lending has also included participation in certain syndicated loans, including shared national credits, which totaled $117.1 million at March 31, 2018. Our commercial and agricultural business loans decreased $14.3 million, or 1%, to $1.60 billion at March 31, 2018, compared to $1.62 billion at December 31, 2017, and increased $66.0 million, or 4%, compared to $1.54 billion at March 31, 2017. The decrease in the current quarter primarily reflects seasonal declines in agricultural loans balances partially offset by growth in commercial business loans. Commercial and agricultural business loans represented approximately 21% of our portfolio at March 31, 2018.

Our one- to four-family real estate loan originations have been relatively strong in recent years, as exceptionally low interest rates have supported demand for loans to refinance existing debt as well as loans to finance home purchases. We are active originators of one- to four-family real estate loans in most communities where we have established offices in Washington, Oregon, California and Idaho. Most of the one- to four-family real estate loans that we originate are sold in the secondary markets with net gains on sales and loan servicing fees reflected in our revenues from mortgage banking. At March 31, 2018, our outstanding balances of one- to four-family real estate loans retained in our portfolio decreased $14.7 million, or 2%, to $833.6 million, compared to $848.3 million at December 31, 2017, and increased $30.6 million, or 4%, compared to $803.0 million at March 31, 2017. One- to four-family real estate loans represented 11% of our loan portfolio at March 31, 2018.

Our consumer loan activity is primarily directed at meeting demand from our existing deposit customers. At March 31, 2018, consumer loans, including consumer loans secured by one- to four-family residences, increased $4.2 million to $693.0 million, compared to $688.8 million at December 31, 2017, and increased $43.3 million compared to $649.7 million at March 31, 2017.

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The following table presents loans by geographic concentration at March 31, 2018, December 31, 2017 and March 31, 2017 (in thousands):

	March 31, 2018				December 31, 2017				March 31, 2017
	Amount		Percentage		Amount		Percentage		Amount		Percentage
Washington	$	3,490,646	46.2	%	$	3,508,542	46.2	%	$	3,401,005	45.8	%
Oregon	1,580,278		20.9		1,590,233		20.9		1,493,054		20.1
California	1,405,411		18.6		1,415,076		18.6		1,255,597		16.9
Idaho	481,972		6.4		492,603		6.5		471,519		6.4
Utah	83,637		1.1		73,382		1.0		281,379		3.8
Other	514,102		6.8		519,048		6.8		518,701		7.0
Total loans receivable	$	7,556,046	100.0	%	$	7,598,884	100.0	%	$	7,421,255	100.0	%

Loans held for sale increased significantly to $141.8 million at March 31, 2018, compared to $40.7 million at December 31, 2017, as we experienced strong production of multifamily held-for-sale loans with no sales during the first three months of 2018. Origination of loans held for sale increased to $222.2 million for the three months ended March 31, 2018 as compared to $167.6 million for the same period last year primarily as a result of increased originations of multifamily loans. Loans held for sale were $86.7 million at March 31, 2017. Loans held for sale at March 31, 2018 included $116.2 million of multifamily loans and $25.7 million of one- to four-family loans.

Investment Securities: Our total investment in securities increased $492.7 million from December 31, 2017 to $1.69 billion at March 31, 2018. Security purchases during the three-month period exceeded sales, paydowns and maturities reflecting the Company's re-leveraged balance sheet following the previously announced strategy to remain below $10 billion in assets through December 31, 2017. Purchases were primarily in mortgage-backed or related securities issued by government-sponsored entities. The average effective duration of Banner's securities portfolio was approximately 3.9 years at March 31, 2018. Net fair value adjustments to the portfolio of securities held for trading, which are included in net income, were an increase of $3.4 million in the three months ended March 31, 2018. In addition, fair value adjustments for securities designated as available-for-sale reflected a decrease of $14.8 million for the three months ended March 31, 2018, which was included net of the associated tax expense of $3.5 million as a component of other comprehensive income and largely occurred as a result of increased market interest rates. (See Note 8 of the Selected Notes to the Consolidated Financial Statements in this Form 10-Q.)

Deposits: Deposits, customer retail repurchase agreements and loan repayments are the major sources of our funds for lending and other investment purposes.  We compete with other financial institutions and financial intermediaries in attracting deposits and we generally attract deposits within our primary market areas. Increasing core deposits (non-interest-bearing and interest-bearing transaction and savings accounts) is a fundamental element of our business strategy. Much of the focus of our branch expansion over many years, including our recent acquisitions, and current marketing efforts have been directed toward attracting additional deposit customer relationships and balances.  This effort has been particularly directed towards emphasizing core deposit activity in non-interest-bearing and other transaction and savings accounts. The long-term success of our deposit gathering activities is reflected not only in the growth of core deposit balances, but also in increases in the level of deposit fees, service charges and other payment processing revenues compared to prior periods.

The following table sets forth the Company's deposits by type of deposit account as of the dates indicated (dollars in thousands):

							Percentage Change
	Mar 31, 2018		Dec 31, 2017		Mar 31, 2017		Prior Yr End		Prior Year
Non-interest-bearing	$	3,383,439	$	3,265,544	$	3,213,044	3.6	%	5.3	%
Interest-bearing checking	1,043,840		971,137		928,232		7.5		12.5
Regular savings accounts	1,637,814		1,557,500		1,592,023		5.2		2.9
Money market accounts	1,459,614		1,422,313		1,543,943		2.6		(5.5	)
Interest-bearing transaction & savings accounts	4,141,268		3,950,950		4,064,198		4.8		1.9
Interest-bearing certificates	1,018,355		966,937		1,144,718		5.3		(11.0	)
Total deposits	$	8,543,062	$	8,183,431	$	8,421,960	4.4	%	1.4	%

Total deposits were $8.54 billion at March 31, 2018, compared to $8.18 billion at December 31, 2017 and $8.42 billion a year ago. The increase in total deposits compared to December 31, 2017 and March 31, 2017 reflects meaningful organic growth in the total balances and number of client relationships, as well as to a lesser extent an increase in brokered deposits from December 31, 2017. Non-interest-bearing account balances increased 4% to $3.38 billion at March 31, 2018, compared to $3.27 billion at December 31, 2017, and increased 5% compared to $3.21 billion a year ago. Interest-bearing transaction and savings accounts increased 5% to $4.14 billion at March 31, 2018, compared to $3.95 billion at December 31, 2017, and increased 2% compared to $4.06 billion a year ago. Certificates of deposit increased 5% to $1.02 billion at March 31, 2018, compared to $966.9 million at December 31, 2017 but decreased compared to $1.14 billion a year ago. Brokered deposits totaled $169.5

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million at March 31, 2018, compared to $57.2 million at December 31, 2017 and $171.5 million a year ago. Brokered deposits increased during 2018 in connection with our leveraging strategy as higher yielding investment securities were purchased. Core deposits represented 88% of total deposits at March 31, 2018, compared to 86% of total deposits a year earlier.

The following table presents deposits by geographic concentration at March 31, 2018, December 31, 2017 and March 31, 2017 (in thousands):

	March 31, 2018				December 31, 2017				March 31, 2017
	Amount		Percentage		Amount		Percentage		Amount		Percentage
Washington	$	4,766,646	55.8	%	$	4,506,249	55.0	%	$	4,619,457	54.9	%
Oregon	1,868,043		21.9		1,797,147		22.0		1,746,143		20.7
California	1,454,421		17.0		1,432,819		17.5		1,469,351		17.4
Idaho	453,952		5.3		447,216		5.5		429,850		5.1
Utah	—		—		—		—		157,159		1.9
Total deposits	$	8,543,062	100.0	%	$	8,183,431	100.0	%	$	8,421,960	100.0	%

Borrowings: FHLB advances increased to $192.2 million at March 31, 2018 from $202,000 at December 31, 2017 as FHLB advances were used to fund a portion of the growth in the held for sale loan and securities portfolios. Other borrowings, consisting of retail repurchase agreements primarily related to customer cash management accounts, increased $6.0 million, or 6%, to $101.8 million at March 31, 2018, compared to $95.9 million at December 31, 2017. No additional junior subordinated debentures were issued or matured during the three months ended March 31, 2018; however, the estimated fair value of these instruments increased by $13.8 million, reflecting a decrease in the market spread partially offset by an increase in LIBOR. Junior subordinated debentures totaled $112.5 million at March 31, 2018 compared to $98.7 million at December 31, 2017.

Shareholders' Equity: Total shareholders' equity decreased $18.5 million to $1.25 billion at March 31, 2018 compared to $1.27 billion at December 31, 2017. The decrease in equity primarily reflects the repurchase of $15.4 million of common stock, a $21.8 million reduction in accumulated other comprehensive income representing unrealized losses on securities available-for-sale as well as increased fair value on junior subordinated debentures, both net of tax, and the accrual of $11.3 million of dividends to common shareholders. These decreases were partially offset by the year-to-date net income of $28.8 million. During the three months ended March 31, 2018, Banner repurchased 269,711 shares of common stock as part of the publicly announced repurchase authorization, 24,660 shares of restricted stock were forfeited and 8,441 shares were surrendered by employees to satisfy tax withholding obligations upon the vesting of restricted stock grants. (See Part II, Item 2, "Unregistered Sales of Equity Securities and Use of Proceeds" in this Form 10-Q.) Tangible common shareholders' equity, which excludes intangible assets, decreased $17.1 million to $990.2 million, or 9.85% of tangible assets at March 31, 2018, compared to $1.01 billion, or 10.61% of tangible assets at December 31, 2017.

Comparison of Results of Operations for the Three Months Ended March 31, 2018 and 2017

For the quarter ended March 31, 2018, our net income was $28.8 million, or $0.89 per diluted share. This compares to net income of $23.8 million, or $0.72 per diluted share, for the quarter ended March 31, 2017. Our net income for the quarter ended March 31, 2018 was positively impacted by growth in interest-earning assets, increased net interest margin, net changes in investment securities carried at fair value and lower corporate tax rates.

Growth in average interest-earning assets, coupled with a higher net interest margin, produced increased net interest income. This resulted in increases in revenues from core operations in the quarter ended March 31, 2018 compared to the same period a year earlier. Credit costs remained low in both periods, while non-interest expenses increased meaningfully compared to a year ago. Net income for the current year was strong, representing further progress on our strategic priorities and initiatives, and produced an annualized return on average assets of 1.16% for the current quarter.

Our earnings from core operations, which excludes net gains or losses on sales of securities, changes in the valuation of financial instruments carried at fair value and related tax benefits, were $26.3 million, or $0.81 per diluted share, for the quarter ended March 31, 2018, compared to $24.2 million, or $0.73 per diluted share, for the quarter ended March 31, 2017.

Net Interest Income. Net interest income increased by $4.5 million, or 5%, to $99.4 million for the quarter ended March 31, 2018, compared to $94.9 million for the same quarter one year earlier, as an increase of $213.1 million in the average balance of interest-earning assets produced strong growth for this key source of revenue. Net interest margin was enhanced by the amortization of acquisition accounting discounts on purchased loans received in the acquisitions, which is accreted into loan interest income. The net interest margin of 4.35% for the quarter ended March 31, 2018 was enhanced by eight basis points as a result of acquisition accounting adjustments. This compares to net interest margin of 4.25% for the quarter ended March 31, 2017, which included ten basis points from acquisition accounting adjustments. The increase in net interest margin compared to a year earlier primarily reflects higher average loan and security yields.

Interest Income. Interest income for the quarter ended March 31, 2018 was $104.8 million, compared to $99.1 million for the same quarter in the prior year, an increase of $5.7 million, or 6%.  The increase in interest income occurred as a result of an increase in the average balances on

53

investment securities and average yields on interest-earning assets, in particular loans and mortgage-backed securities. The average balance of interest-earning assets was $9.26 billion for the quarter ended March 31, 2018, compared to $9.05 billion for the same period a year earlier. The yield on average interest-earning assets was 4.59% for quarter ended March 31, 2018, compared to 4.44% for the same quarter one year earlier. The increase in yield between periods reflects an 18 basis point increase in the average yield on loans as well as a 37 basis point increase in the average yield on investment securities. Average loans receivable for the quarter ended March 31, 2018 decreased $45.2 million, or 1%, to $7.66 billion, compared to $7.71 billion for the same quarter in the prior year. Interest income on loans increased by $2.7 million, or 3%, to $94.0 million for the current quarter from $91.3 million for the quarter ended March 31, 2017, reflecting the impact of the previously mentioned increases in average loan yields.  The increase in average loan yields reflects the impact of higher Prime and LIBOR rates over the last year. The acquisition accounting loan discount accretion and the related balance sheet impact added ten basis points to the current quarter loan yield, compared to 11 basis points for the same quarter one year earlier.

The combined average balance of mortgage-backed securities, other investment securities, daily interest-bearing deposits and FHLB stock (total investment securities or combined portfolio) increased to $1.60 billion for the quarter ended March 31, 2018 (excluding the effect of fair value adjustments), compared to $1.34 billion for the quarter ended March 31, 2017; and the interest and dividend income from those investments increased by $3.0 million compared to the same quarter in the prior year. The average yield on the combined portfolio increased to 2.73% for the quarter ended March 31, 2018, from 2.36% for the same quarter one year earlier due to securities purchases during 2018 with higher yields than the existing portfolio.

Interest Expense. Interest expense for the quarter ended March 31, 2018 was $5.4 million, compared to $4.2 million for the same quarter in the prior year. The interest expense increase between periods reflects a $133.2 million, or 2%, increase in the average balance of funding liabilities and a five basis point increase in the average cost of all funding liabilities.

Deposit interest expense increased $567,000, or 20%, to $3.4 million for the quarter ended March 31, 2018, compared to $2.8 million for the same quarter in the prior year, primarily as a result of increases in the cost of interest-bearing deposits, partially offset by an increase in non-interest-bearing deposits. Average deposit balances increased to $8.33 billion for the quarter ended March 31, 2018, from $8.21 billion for the quarter ended March 31, 2017, while the average rate paid on deposit balances increased to 0.16% in the first quarter of 2018 from 0.14% for the quarter ended March 31, 2017, reflecting primarily the increase in the cost of certificates of deposits partially offset by the increase in non-interest-bearing deposits. The cost of interest-bearing deposits increased by five basis points to 0.27% for the quarter ended March 31, 2018 compared to 0.22% in the same quarter a year earlier. Deposit costs are significantly affected by changes in the level of market interest rates; however, changes in the average rate paid for interest-bearing deposits frequently tend to lag changes in market interest rates, although the increase in short-term rates following the change in the Fed Funds target rate in December 2017 and March 2018 did contribute to the five basis point increase in the cost of deposits.

Average total borrowings were $396.9 million for the quarter ended March 31, 2018, compared to $378.6 million for the same quarter one year earlier and the average rate paid on total borrowings for the quarter ended March 31, 2018 increased to 2.13% from 1.55% for the same quarter one year earlier. The increase in the average balance from the quarter ended March 31, 2018 from the same period a year earlier was primarily due to a $25.3 million increase in average FHLB advances. Interest expense on total borrowings increased to $2.1 million for the quarter ended March 31, 2018 from $1.5 million for the quarter ended March 31, 2017.

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Analysis of Net Interest Spread. The following tables present for the periods indicated our condensed average balance sheet information, together with interest income and yields earned on average interest-earning assets and interest expense and rates paid on average interest-bearing liabilities with additional comparative data on our operating performance (dollars in thousands):

	Three Months Ended March 31, 2018						Three Months Ended March 31, 2017
	Average Balance		Interest and Dividends		Yield/    Cost (3)		Average Balance		Interest and Dividends		Yield/    Cost (3)
Interest-earning assets:
Mortgage loans	$	6,065,199	$	74,346	4.97	%	$	6,104,779	$	72,549	4.82	%
Commercial/agricultural loans	1,456,303		17,423		4.85		1,464,532		16,546		4.58
Consumer and other loans	140,627		2,253		6.50		138,033		2,193		6.44
Total loans (1)	7,662,129		94,022		4.98		7,707,344		91,288		4.80
Mortgage-backed securities	1,057,878		7,331		2.81		842,071		4,647		2.24
Other securities	462,947		3,090		2.71		453,793		3,037		2.71
Interest-bearing deposits with banks	64,512		231		1.45		32,195		93		1.17
FHLB stock	16,549		146		3.58		15,550		31		0.81
Total investment securities	1,601,886		10,798		2.73		1,343,609		7,808		2.36
Total interest-earning assets	9,264,015		104,820		4.59		9,050,953		99,096		4.44
Non-interest-earning assets	805,503						923,165
Total assets	$	10,069,518					$	9,974,118
Deposits:
Interest-bearing checking accounts	$	1,003,929	246		0.10		$	896,764	200		0.09
Savings accounts	1,601,671		627		0.16		1,557,734		523		0.14
Money market accounts	1,442,685		666		0.19		1,522,470		651		0.17
Certificates of deposit	998,738		1,819		0.74		1,089,316		1,417		0.53
Total interest-bearing deposits	5,047,023		3,358		0.27		5,066,284		2,791		0.22
Non-interest-bearing deposits	3,282,686		—		—		3,148,520		—		—
Total deposits	8,329,709		3,358		0.16		8,214,804		2,791		0.14
Other interest-bearing liabilities:
FHLB advances	155,540		677		1.77		130,274		273		0.85
Other borrowings	101,111		70		0.28		108,091		74		0.28
Junior subordinated debentures	140,212		1,342		3.88		140,212		1,104		3.19
Total borrowings	396,863		2,089		2.13		378,577		1,451		1.55
Total funding liabilities	8,726,572		5,447		0.25		8,593,381		4,242		0.20
Other non-interest-bearing liabilities (2)	65,978						58,489
Total liabilities	8,792,550						8,651,870
Shareholders’ equity	1,276,968						1,322,248
Total liabilities and shareholders’ equity	$	10,069,518					$	9,974,118
Net interest income/rate spread			$	99,373	4.34	%			$	94,854	4.24	%
Net interest margin					4.35	%					4.25	%
Additional Key Financial Ratios:
Return on average assets					1.16	%					0.97	%
Return on average equity					9.14						7.30
Average equity / average assets					12.68						13.26
Average interest-earning assets / average interest-bearing liabilities					170.17						166.23
Average interest-earning assets / average funding liabilities					106.16						105.32
Non-interest income / average assets					0.86						0.77
Non-interest expense / average assets					3.29						3.10
Efficiency ratio (4)					67.67						66.97
Adjusted efficiency ratio (5)					67.42						65.30

⁽¹⁾  Average balances include loans accounted for on a nonaccrual basis and loans 90 days or more past due.  Amortization of net deferred loan fees/costs is included with interest on loans.

⁽²⁾  Average other non-interest-bearing liabilities include fair value adjustments related to FHLB advances and junior subordinated debentures.

⁽³⁾  Yields and costs have not been adjusted for the effect of tax-exempt interest.

⁽⁴⁾  Non-interest expense divided by the total of net interest income (before provision for loan losses) and non-interest income.

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⁽⁵⁾  Adjusted non-interest expense divided by adjusted revenue. Adjusted revenue excludes net gain (loss) on sale of securities and fair value adjustments. Adjusted non-interest expense excludes amortization of CDI, net gain (loss) from OREO operations, and Washington B&O taxes. These represent non-GAAP financial measures. See the non-GAAP reconciliation tables above under Executive Overview—Non-GAAP Financial Measures.

Provision and Allowance for Loan Losses.

The provision for loan losses reflects the amount required to maintain the allowance for loan losses at an appropriate level based upon management’s evaluation of the adequacy of general and specific loss reserves, trends in delinquencies and net charge-offs and current economic conditions. During the quarter ended March 31, 2018, we recorded a provision for loans losses of $2.0 million, the same amount for both the fourth quarter of 2017 and the comparable period a year ago. We continue to maintain an appropriate allowance for loan losses at March 31, 2018, reflecting growth in the related portfolio and current economic conditions.

In accordance with acquisition accounting, loans acquired from acquisitions were recorded at their estimated fair value, which resulted in a net discount to the loans contractual amounts, of which a portion reflects a discount for possible credit losses. Credit discounts are included in the determination of fair value and as a result no allowance for loan and lease losses is recorded for acquired loans at the acquisition date. Although the discount recorded on the acquired loans is not reflected in the allowance for loan losses, or related allowance coverage ratios, we believe it should be considered when comparing the current ratios to similar ratios in periods prior to the recent acquisitions. The discount on acquired loans was $19.4 million at March 31, 2018 compared to $21.1 million at December 31, 2017 and $29.4 million at March 31, 2017.

Net loan recoveries were $1.2 million for the quarter ended March 31, 2018 compared to net loan charge-offs of $1.5 million for the same quarter in the prior year. The allowance for loan losses was $92.2 million at March 31, 2018 compared to $89.0 million at December 31, 2017 and $86.5 million at March 31, 2017. Included in our allowance at March 31, 2018 was an unallocated portion of $5.2 million, which is based upon our evaluation of various factors that are not directly measured in the determination of the formula and specific allowances. The allowance for loan losses as a percentage of total loans (loans receivable excluding allowance for loan losses) was 1.22% at March 31, 2018, compared to 1.17% at December 31, 2017 and 1.17% at March 31, 2017.  

We believe that the allowance for loan losses as of March 31, 2018 was adequate to absorb the known and inherent risks of loss in the loan portfolio at that date. We believe the estimates and assumptions used in our determination of the adequacy of the allowance are reasonable, although there can be no assurance that these estimates and assumptions will not be proven incorrect in the future, or that the actual amount of future provisions will not exceed the amount of past provisions or that any increased provisions that may be required will not adversely impact our financial condition and results of operations. In addition, the determination of the amount of the allowance for loan losses is subject to review by bank regulators as part of the routine examination process, which may result in the establishment of additional reserves based upon their judgment of information available to them at the time of their examination.

Non-interest Income. The following table presents the key components of non-interest income for the three months ended March 31,2018 and 2017 (dollars in thousands):

	Three months ended March 31,
	2018		2017			Change Amount			Change Percent
Deposit fees and other service charges	$	11,296	$	10,389		$	907		8.7	%
Mortgage banking operations	4,864		4,603			261			5.7
Bank owned life insurance	853		1,095			(242		)	(22.1	)
Miscellaneous	1,037		3,636			(2,599		)	(71.5	)
	18,050		19,723			(1,673		)	(8.5	)
Net gain on sale of securities	4		13			(9		)	(69.2	)
Net change in valuation of financial instruments carried at fair value	3,308		(688		)	3,996			(580.8	)
Total non-interest income	$	21,362	$	19,048		$	2,314		12.1	%

Non-interest income, which includes changes in the valuation of financial instruments carried at fair value, net gain on sale of securities, and non-interest revenues from core operations, was $21.4 million for the quarter ended March 31, 2018, compared to $19.0 million for the same quarter in the prior year. Our non-interest income for the quarter ended March 31, 2018 included a $3.3 million net gain for fair value adjustments and a $4,000 net gain on sale of securities. The net gain for fair value adjustments was due to an increase in the value of certain securities in our held for trading portfolio. By contrast, for the quarter ended March 31, 2017, fair value adjustments resulted in a net loss of $688,000 and we had a net gain of $13,000 on sale of securities. For a more detailed discussion of our fair value adjustments, please refer to Note 8 in the Selected Notes to the Consolidated Financial Statements in this Form 10-Q.

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Excluding the fair value adjustments and net gain on sale of securities, non-interest income from core operations decreased by $1.7 million, or 8%, to $18.1 million for the quarter ended March 31, 2018, compared to $19.7 million for the quarter ended March 31, 2017. Deposit fees and other service charges increased by $907,000, or 9%, for the quarter ended March 31, 2018compared to the same period a year ago reflecting growth in the number of deposit accounts resulting in increased transaction activity. Mortgage banking revenues, including gains on one- to four-family and multifamily loan sales and loan servicing fees, increased $261,000 for the quarter ended March 31, 2018 compared to the same period a year ago. Gains on multifamily loans in the current quarter resulted in income of $609,000 compared to $70,000 in the same quarter a year ago. The increase in multifamily income was due to a combination of declining market spreads on sold loans in the same period a year ago and the transition to fair value accounting in connection with a forward sales hedging program for multifamily held for sale loans in second quarter of 2017. Sales of one- to four-family loans in the current quarter resulted in gains of $4.2 million compared to $4.5 million in the same period a year ago. Home purchase activity accounted for 72% of first quarter one- to four-family mortgage banking loan originations as compared to 64% for the first quarter last year. Miscellaneous income for the three months ended March 31, 2017 included a one-time gain of $2.5 million on the sale of a single loan that had been acquired a number of years previously as a partial settlement on a non-performing credit relationship that was carried at a significant discount to its contractual amount and eventual sales price.

Non-interest Expense.  The following table represents key elements of non-interest expense for the three months ended March 31, 2018 and 2017 (dollars in thousands):

	For the Three Months Ended March 31,
	2018			2017			Change Amount			Change Percent
Salaries and employee benefits	$	50,067		$	46,063		$	4,004		8.7	%
Less capitalized loan origination costs	(4,011		)	(4,316		)	305			(7.1	)
Occupancy and equipment	11,766			11,996			(230		)	(1.9	)
Information/computer data services	4,381			3,994			387			9.7
Payment and card processing expenses	3,700			3,223			477			14.8
Professional services	4,428			5,152			(724		)	(14.1	)
Advertising and marketing	1,830			1,328			502			37.8
Deposit insurance	1,341			1,266			75			5.9
State/Municipal business and use taxes	713			799			(86		)	(10.8	)
REO operations	439			(966		)	1,405			(145.4	)
Amortization of core deposit intangibles	1,382			1,624			(242		)	(14.9	)
Miscellaneous	5,670			6,118			(448		)	(7.3	)
Total non-interest expense	$	81,706		$	76,281		$	5,425		7.1	%

Non-interest expenses increased by $5.4 million, to $81.7 million for the quarter ended March 31, 2018, compared to $76.3 million for the quarter ended March 31, 2017. The increase was primarily related to increased salaries and employee benefits including costs incurred for enhanced regulatory requirements in preparation for the crossing the $10 billion asset threshold attributable to the build-out of the Company's compliance and risk management infrastructure, as well as normal wage increases. Also contributing to the increase in non-interest expense was the prior year period included a gain on sale of REO recorded as a reduction to non-interest expense.

Salaries and employee benefits expense increased $4.0 million, to $50.1 million for the quarter ended March 31, 2018, compared to $46.1 million for the quarter ended March 31, 2017, primarily reflecting the incremental staffing associated with the build-out of the Company's compliance and risk management infrastructure and annual salary merit increases. Payment and card processing expense increased $477,000 for the quarter ended March 31, 2018 compared to the same period in the prior year, due to larger transaction volumes. Professional services expense decreased $724,000 for the quarter ended March 31, 2018 compared to the same period in the prior year, reflecting a reduction in consulting services related to enhanced regulatory requirements attributable to our compliance and risk management infrastructure build-out. Advertising and marketing expense increased $502,000 for the quarter ended March 31, 2018 compared to the same period in the prior year, primarily reflecting a direct mail campaign completed in the current quarter. REO operations had a net loss of $439,000 for the quarter ended March 31, 2018, compared to a net gain of $966,000 in the same prior-year period.

Income Taxes. In the quarter ended March 31, 2018, we recognized $8.2 million in income tax expense for an effective tax rate of 22.3%, which reflects our normal statutory tax rate reduced by the effect of tax-exempt income, certain tax credits, and tax benefits related to restricted stock vesting. The current quarter effective tax rate reflects the new lower corporate federal income tax rate. Our normal, expected statutory income tax rate is 23.7%, representing a blend of the statutory federal income tax rate of 21.0% and apportioned effects of the state income tax rates. For the quarter ended March 31, 2017, we recognized $11.8 million in income tax expense for an effective tax rate of 33.2%. For more discussion on our income taxes, please refer to Note 9 in the Selected Notes to the Consolidated Financial Statements in this report on Form 10-Q.

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Asset Quality

Achieving and maintaining a moderate risk profile by employing appropriate underwriting standards, avoiding excessive asset concentrations and aggressively managing troubled assets has been and will continue to be a primary focus for us. As a result, current asset quality metrics are at historically favorable levels and are unlikely to meaningfully improve. Our reserve levels are adequate and reflect current market conditions. In addition, our impairment analysis and charge-off actions reflect current appraisals and valuation estimates. We actively engage our borrowers to resolve problem assets and effectively manage the real estate owned as a result of foreclosures.

Non-Performing Assets:  Non-performing assets decreased to $23.5 million, or 0.23% of total assets, at March 31, 2018, from $27.5 million, or 0.28% of total assets, at December 31, 2017, and and increased slightly compared to $21.3 million, or 0.21% of total assets, at March 31, 2017. Our allowance for loan losses was $92.2 million, or 410% of non-performing loans at March 31, 2018, compared to $89.0 million, or 329% of non-performing loans at December 31, 2017 and $86.5 million, or 479% of non-performing loans at March 31, 2017.  Our level of non-performing loans and assets continues to be manageable. The primary components of the $23.5 million in non-performing assets were $21.1 million in nonaccrual loans, $1.4 million in loans more than 90 days delinquent and still accruing interest, and $1.0 million in REO and other repossessed assets.

Loans are reported as restructured when we grant concessions to a borrower experiencing financial difficulties that we would not otherwise consider.  As a result of these concessions, restructured loans or TDRs are impaired as the Banks will not collect all amounts due, both principal and interest, in accordance with the terms of the original loan agreement.  If any restructured loan becomes delinquent or other matters call into question the borrower's ability to repay full interest and principal in accordance with the restructured terms, the restructured loan(s) would be reclassified as nonaccrual.  At March 31, 2018, we had $14.3 million of restructured loans currently performing under their restructured repayment terms.

Loans acquired in merger transactions with deteriorated credit quality are accounted for as purchased credit-impaired pools. Typically this would include loans that were considered non-performing or restructured as of the acquisition date. Accordingly, subsequent to acquisition, loans included in the purchased credit-impaired pools are not reported as non-performing loans based upon their individual performance status, so the categories of nonaccrual, impaired and 90 day past due and accruing do not include any purchased credit-impaired loans. Purchased credit-impaired loans were $19.3 million at March 31, 2018, compared to $21.3 million at December 31, 2017 and $30.5 million at March 31, 2017.

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The following table sets forth information with respect to our non-performing assets and restructured loans at the dates indicated (dollars in thousands):

	March 31, 2018			December 31, 2017			March 31, 2017
Nonaccrual Loans: (1)
Secured by real estate:
Commercial	$	6,877		$	10,646		$	6,910
Multifamily	—			—			147
Construction and land	984			798			1,775
One- to four-family	2,815			3,264			3,386
Commercial business	3,037			3,406			2,700
Agricultural business, including secured by farmland	6,120			6,132			1,012
Consumer	1,237			1,297			1,285
	21,070			25,543			17,215
Loans more than 90 days delinquent, still on accrual:
Secured by real estate:
Construction and land	—			298			—
One- to four-family	591			1,085			545
Commercial business	1			18			—
Agricultural business, including secured by farmland	820			—			—
Consumer	7			85			297
	1,419			1,486			842
Total non-performing loans	22,489			27,029			18,057
REO, net (2)	328			360			3,040
Other repossessed assets held for sale	694			107			162
Total non-performing assets	$	23,511		$	27,496		$	21,259
Total non-performing loans to loans before allowance for loan losses	0.30		%	0.36		%	0.24		%
Total non-performing loans to total assets	0.22		%	0.28		%	0.18		%
Total non-performing assets to total assets	0.23		%	0.28		%	0.21		%
Restructured loans performing under their restructured terms (3)	$	14,264		$	16,115		$	17,193
Loans 30-89 days past due and on accrual (4)	$	23,557		$	29,278		$	22,214

⁽¹⁾  Includes $571,000 of nonaccrual restructured loans at March 31, 2018. For the quarter ended March 31, 2018, interest income was reduced by $265,000 as the result of nonaccrual loans.

⁽²⁾ Real estate acquired by us as a result of foreclosure or by deed-in-lieu of foreclosure is classified as REO until it is sold. When property is acquired, it is recorded at the estimated fair value of the property, less expected selling costs. Subsequent to foreclosure, the property is carried at the lower of the foreclosed amount or net realizable value. Upon receipt of a new appraisal and market analysis, the carrying value is written down through the establishment of a specific reserve to the anticipated sales price, less selling and holding costs.

⁽³⁾ These loans were performing under their restructured repayment terms at March 31, 2018.

⁽⁴⁾ Includes purchased credit-impaired loans.

In addition to the non-performing loans and purchased credit-impaired loans as of March 31, 2018, we had other classified loans with an aggregate outstanding balance of $87.0 million that are not on nonaccrual status, with respect to which known information concerning possible credit problems with the borrowers or the cash flows of the properties securing the respective loans has caused management to be concerned about the ability of the borrowers to comply with present loan repayment terms.  This may result in the future inclusion of such loans in the nonaccrual loan category.

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REO: REO decreased slightly, to $328,000 at March 31, 2018, compared to $360,000 at December 31, 2017. The following table shows REO activity for the three months ended March 31, 2018 and March 31, 2017:

	Three Months Ended
	Mar 31, 2018			Mar 31, 2017
Balance, beginning of period	$	360		$	11,081
Additions from loan foreclosures	128			—
Proceeds from dispositions of REO	—			(9,193		)
Gain on sale of REO	—			1,202
Valuation adjustments in the period	(160		)	(50		)
Balance, end of period	$	328		$	3,040

From time to time, non-recurring fair value adjustments to REO are recorded to reflect partial write-downs based on an observable market price or current appraised value of property. The individual carrying values of these assets are reviewed for impairment at least annually and any additional impairment charges are expensed to operations.

Liquidity and Capital Resources

Our primary sources of funds are deposits, borrowings, proceeds from loan principal and interest payments and sales of loans, and the maturity of and interest income on mortgage-backed and investment securities. While maturities and scheduled amortization of loans and mortgage-backed securities are a predictable source of funds, deposit flows and mortgage prepayments are greatly influenced by market interest rates, economic conditions, competition and our pricing strategies.

Our primary investing activity is the origination and purchase of loans and, in certain periods, the purchase of securities.  During the three months ended March 31, 2018 and March 31, 2017, our loan originations, including originations of loans held for sale, exceeded our loan repayments by $181.3 million and $48.0 million, respectively. During those periods we purchased loans and loan participations of $8.1 million and $99.2 million, respectively. This activity was funded primarily by increased deposits, additional borrowings and the sale of loans in 2018 and primarily from the sale of loans and increased deposits in 2017. During the three months ended March 31, 2018 and March 31, 2017, we received proceeds of $137.7 million and $344.5 million, respectively, from the sale of loans. Securities purchased during the three months ended March 31, 2018 and March 31, 2017 totaled $543.2 million and $458.0 million, respectively, and securities repayments, maturities and sales in those periods were $31.2 million and $35.6 million, respectively.

Our primary financing activity is gathering deposits. Total deposits increased by $359.6 million during the first three months of 2018, primarily due to a $308.2 million increase in core deposits.Certificates of deposit are generally more vulnerable to competition and price sensitive than other retail deposits and our pricing of those deposits varies significantly based upon our liquidity management strategies at any point in time.  At March 31, 2018, certificates of deposit amounted to $1.02 billion, or 12% of our total deposits, including $703.7 million which were scheduled to mature within one year.  While no assurance can be given as to future periods, historically, we have been able to retain a significant amount of our deposits as they mature.

FHLB advances (excluding fair value adjustments) increased $192.0 million from December 31, 2017 to $192.2 million at March 31, 2018. Other borrowings increased $6.0 million from December 31, 2017 to $101.8 million at March 31, 2018.

We must maintain an adequate level of liquidity to ensure the availability of sufficient funds to accommodate deposit withdrawals, to support loan growth, to satisfy financial commitments and to take advantage of investment opportunities. During the three months ended March 31, 2018 and 2017, we used our sources of funds primarily to fund loan commitments and purchase securities. At March 31, 2018, we had outstanding loan commitments totaling $2.52 billion, including undisbursed loans in process and unused credit lines totaling $2.47 billion. While representing potential growth in the loan portfolio and lending activities, this level of commitments is proportionally consistent with our historical experience and does not represent a departure from normal operations.

We generally maintain sufficient cash and readily marketable securities to meet short-term liquidity needs; however, our primary liquidity management practice to supplement deposits is to increase or decrease short-term borrowings.  We maintain credit facilities with the FHLB-Des Moines, which at March 31, 2018 provided for advances that in the aggregate would equal the lesser of 35% of Banner Bank’s assets or adjusted qualifying collateral (subject to a sufficient level of ownership of FHLB stock), up to a total possible credit line of $3.32 billion, and 35% of Islanders Bank’s assets or adjusted qualifying collateral, up to a total possible credit line of $97.2 million.  Advances under these credit facilities (excluding fair value adjustments) totaled $192.2 million at March 31, 2018. In addition, Banner Bank has been approved for participation in the FRBSF’s Borrower-In-Custody (BIC) program.  Under this program Banner Bank had available lines of credit of approximately $1.14 billion as of March 31, 2018, subject to certain collateral requirements, namely the collateral type and risk rating of eligible pledged loans.  We had no funds borrowed from the FRBSF at March 31, 2018 or December 31, 2017.  Management believes it has adequate resources and funding potential to meet our foreseeable liquidity requirements.

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Banner Corporation is a separate legal entity from the Banks and, on a stand-alone level, must provide for its own liquidity and pay its own operating expenses and cash dividends. Banner's primary sources of funds consist of capital raised through dividends or capital distributions from the Banks, although there are regulatory restrictions on the ability of the Banks to pay dividends. At March 31, 2018, the Company on an unconsolidated basis had liquid assets of $32.4 million.

As noted below, Banner Corporation and its subsidiary banks continued to maintain capital levels significantly in excess of the requirements to be categorized as “Well-Capitalized” under applicable regulatory standards.  During the three months ended March 31, 2018, total shareholders' equity decreased $18.5 million, to $1.25 billion.  At March 31, 2018, tangible common shareholders’ equity, which excludes other goodwill and other intangible assets, was $990.2 million, or 9.85% of tangible assets.  See the discussion and reconciliation of non-GAAP financial information in the Executive Overview section of Management’s Discussion and Analysis of Financial Condition and Results of Operation in this Form 10-Q for more detailed information with respect to tangible common shareholders’ equity.  Also, see the capital requirements discussion and table below with respect to our regulatory capital positions.

Capital Requirements

Banner Corporation is a bank holding company registered with the Federal Reserve.  Bank holding companies are subject to capital adequacy requirements of the Federal Reserve under the Bank Holding Company Act of 1956, as amended (BHCA), and the regulations of the Federal Reserve.  Banner Bank and Islanders Bank, as state-chartered, federally insured commercial banks, are subject to the capital requirements established by the FDIC.

The capital adequacy requirements are quantitative measures established by regulation that require Banner Corporation and the Banks to maintain minimum amounts and ratios of capital.  The Federal Reserve requires Banner Corporation to maintain capital adequacy that generally parallels the FDIC requirements.  The FDIC requires the Banks to maintain minimum ratios of Total Capital, Tier 1 Capital, and Common Equity Tier 1 Capital to risk-weighted assets as well as Tier 1 Leverage Capital to average assets.  In addition to the minimum capital ratios, the Banks now have to maintain a capital conservation buffer consisting of additional Common Equity Tier 1 Capital above the required minimum levels in order to avoid limitations on paying dividends, engaging in share repurchases, and paying discretionary bonuses based on percentages of eligible retained income that could be utilized for such actions. This new capital conservation buffer requirement began to be phased in starting in January 2016 at 0.625% of risk-weighted assets and will increase each year until fully implemented to an amount equal to 2.5% of risk-weighted assets in January 2019. As of March 31, 2018, the conservation buffer was 1.875%. At March 31, 2018, Banner Corporation and the Banks each exceeded all regulatory capital requirements. (See Item 1, “Business–Regulation,” and Note 16 of the Notes to the Consolidated Financial Statements included in the 2017 Form 10-K for additional information regarding regulatory capital requirements for Banner Corporation and the Banks.)

The actual regulatory capital ratios calculated for Banner Corporation, Banner Bank and Islanders Bank as of March 31, 2018, along with the minimum capital amounts and ratios, were as follows (dollars in thousands):

	Actual				Minimum to be Categorized as "Adequately Capitalized"				Minimum to be Categorized as “Well-Capitalized”
	Amount		Ratio		Amount		Ratio		Amount		Amount
Banner Corporation—consolidated
Total capital to risk-weighted assets	$	1,179,652	13.31	%	$	708,868	8.00	%	$	886,086	10.00	%
Tier 1 capital to risk-weighted assets	1,084,996		12.24		531,651		6.00		531,651		6.00
Tier 1 leverage capital to average assets	1,084,996		11.09		391,285		4.00		n/a		n/a
Common equity tier 1 capital	948,996		10.71		398,738		4.50		n/a		n/a
Banner Bank
Total capital to risk-weighted assets	1,118,764		12.91		693,171		8.00		866,464		10.00
Tier 1 capital to risk-weighted assets	1,026,521		11.85		519,879		6.00		693,171		8.00
Tier 1 leverage capital to average assets	1,026,521		10.80		380,234		4.00		475,292		5.00
Common equity tier 1 capital	1,026,521		11.85		389,909		4.50		563,202		6.50
Islanders Bank
Total capital to risk-weighted assets	32,716		16.77		15,607		8.00		19,509		10.00
Tier 1 capital to risk-weighted assets	30,303		15.53		11,705		6.00		15,607		8.00
Tier 1 leverage capital to average assets	30,303		11.03		10,985		4.00		13,731		5.00
Common equity tier 1 capital	30,303		15.53		8,779		4.50		12,681		6.50

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ITEM 3 – Quantitative and Qualitative Disclosures About Market Risk

Market Risk and Asset/Liability Management

Our financial condition and operations are influenced significantly by general economic conditions, including the absolute level of interest rates as well as changes in interest rates and the slope of the yield curve.  Our profitability is dependent to a large extent on our net interest income, which is the difference between the interest received from our interest-earning assets and the interest expense incurred on our interest-bearing liabilities.

Our activities, like all financial institutions, inherently involve the assumption of interest rate risk.  Interest rate risk is the risk that changes in market interest rates will have an adverse impact on the institution’s earnings and underlying economic value.  Interest rate risk is determined by the maturity and repricing characteristics of an institution’s assets, liabilities and off-balance-sheet contracts.  Interest rate risk is measured by the variability of financial performance and economic value resulting from changes in interest rates.  Interest rate risk is the primary market risk affecting our financial performance.

The greatest source of interest rate risk to us results from the mismatch of maturities or repricing intervals for rate sensitive assets, liabilities and off-balance-sheet contracts.  This mismatch or gap is generally characterized by a substantially shorter maturity structure for interest-bearing liabilities than interest-earning assets, although our floating-rate assets tend to be more immediately responsive to changes in market rates than most deposit liabilities.  Additional interest rate risk results from mismatched repricing indices and formula (basis risk and yield curve risk), and product caps and floors and early repayment or withdrawal provisions (option risk), which may be contractual or market driven, that are generally more favorable to customers than to us.  An exception to this generalization is the beneficial effect of interest rate floors on a substantial portion of our performing floating-rate loans, which help us maintain higher loan yields in periods when market interest rates decline significantly. We are currently experiencing a period of rising rates after a prolonged period of historically low deposit costs. The cost of deposits may increase more quickly than the yield on our earning assets as we continue to operate in a higher rate environment causing compression in the Banks' net interest margin and a reduction in the amount of net interest income revenue we generate. The Company actively manages its exposure to interest rate risk through on-going adjustments to the mix of earning assets and funding sources that affect the repricing speeds of loans, investments, interest-bearing deposits and borrowings.

The principal objectives of asset/liability management are: to evaluate the interest rate risk exposure; to determine the level of risk appropriate given our operating environment, business plan strategies, performance objectives, capital and liquidity constraints, and asset and liability allocation alternatives; and to manage our interest rate risk consistent with regulatory guidelines and policies approved by the Board of Directors.  Through such management, we seek to reduce the vulnerability of our earnings and capital position to changes in the level of interest rates.  Our actions in this regard are taken under the guidance of the Asset/Liability Management Committee, which is comprised of members of our senior management.  The Committee closely monitors our interest sensitivity exposure, asset and liability allocation decisions, liquidity and capital positions, and local and national economic conditions and attempts to structure the loan and investment portfolios and funding sources to maximize earnings within acceptable risk tolerances.

Sensitivity Analysis

Our primary monitoring tool for assessing interest rate risk is asset/liability simulation modeling, which is designed to capture the dynamics of balance sheet, interest rate and spread movements and to quantify variations in net interest income resulting from those movements under different rate environments.  The sensitivity of net interest income to changes in the modeled interest rate environments provides a measurement of interest rate risk.  We also utilize economic value analysis, which addresses changes in estimated net economic value of equity arising from changes in the level of interest rates.  The net economic value of equity is estimated by separately valuing our assets and liabilities under varying interest rate environments.  The extent to which assets gain or lose value in relation to the gains or losses of liability values under the various interest rate assumptions determines the sensitivity of net economic value to changes in interest rates and provides an additional measure of interest rate risk.

The interest rate sensitivity analysis performed by us incorporates beginning-of-the-period rate, balance and maturity data, using various levels of aggregation of that data, as well as certain assumptions concerning the maturity, repricing, amortization and prepayment characteristics of loans and other interest-earning assets and the repricing and withdrawal of deposits and other interest-bearing liabilities into an asset/liability computer simulation model.  We update and prepare simulation modeling at least quarterly for review by senior management and the directors. We believe the data and assumptions are realistic representations of our portfolio and possible outcomes under the various interest rate scenarios.  Nonetheless, the interest rate sensitivity of our net interest income and net economic value of equity could vary substantially if different assumptions were used or if actual experience differs from the assumptions used.

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The following table sets forth, as of March 31, 2018, the estimated changes in our net interest income over one-year and two-year time horizons and the estimated changes in economic value of equity based on the indicated interest rate environments (dollars in thousands):

	Estimated Increase (Decrease) in
Change (in Basis Points) in Interest Rates (1)	Net Interest Income Next 12 Months					Net Interest Income Next 24 Months					Economic Value of Equity
+400	$	16,924		4.1	%	$	47,833		5.7	%	$	(426,945	)	(19.4	)%
+300	16,456			4.0		45,301			5.4		(316,406		)	(14.4	)
+200	13,304			3.2		36,585			4.4		(185,351		)	(8.4	)
+100	7,860			1.9		21,848			2.6		(74,573		)	(3.4	)
0	—			—		—			—		—			—
-25	(3,939		)	(1.0	)	(10,826		)	(1.3	)	9,783			0.4
-50	(9,081		)	(2.2	)	(24,011		)	(2.9	)	16,072			0.7

⁽¹⁾  Assumes an instantaneous and sustained uniform change in market interest rates at all maturities; however, no rates are allowed to go below zero.  The current targeted federal funds rate is between 1.50% and 1.75%.

Another (although less reliable) monitoring tool for assessing interest rate risk is gap analysis.  The matching of the repricing characteristics of assets and liabilities may be analyzed by examining the extent to which assets and liabilities are interest sensitive and by monitoring an institution’s interest sensitivity gap.  An asset or liability is said to be interest sensitive within a specific time period if it will mature or reprice within that time period.  The interest rate sensitivity gap is defined as the difference between the amount of interest-earning assets anticipated, based upon certain assumptions, to mature or reprice within a specific time period and the amount of interest-bearing liabilities anticipated to mature or reprice, based upon certain assumptions, within that same time period.  A gap is considered positive when the amount of interest-sensitive assets exceeds the amount of interest-sensitive liabilities.  A gap is considered negative when the amount of interest-sensitive liabilities exceeds the amount of interest-sensitive assets.  Generally, during a period of rising rates, a negative gap would tend to adversely affect net interest income while a positive gap would tend to result in an increase in net interest income.  During a period of falling interest rates, a negative gap would tend to result in an increase in net interest income while a positive gap would tend to adversely affect net interest income.

Certain shortcomings are inherent in gap analysis.  For example, although certain assets and liabilities may have similar maturities or periods of repricing, they may react in different degrees to changes in market rates.  Also, the interest rates on certain types of assets and liabilities may fluctuate in advance of changes in market rates, while interest rates on other types may lag behind changes in market rates.  Additionally, certain assets, such as adjustable-rate mortgage loans, have features that restrict changes in interest rates on a short-term basis and over the life of the asset.  Further, in the event of a change in interest rates, prepayment and early withdrawal levels would likely deviate significantly from those assumed in calculating the table.  Finally, the ability of some borrowers to service their debt may decrease in the event of a severe change in market rates.

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The following table presents our interest sensitivity gap between interest-earning assets and interest-bearing liabilities at March 31, 2018 (dollars in thousands).  The table sets forth the amounts of interest-earning assets and interest-bearing liabilities which are anticipated by us, based upon certain assumptions, to reprice or mature in each of the future periods shown.  At March 31, 2018, total interest-earning assets maturing or repricing within one year exceeded total interest-bearing liabilities maturing or repricing in the same time period by $2.24 billion, representing a one-year cumulative gap to total assets ratio of 21.68%.  Management is aware of the sources of interest rate risk and in its opinion actively monitors and manages it to the extent possible.  The interest rate risk indicators and interest sensitivity gaps as of March 31, 2018 are within our internal policy guidelines and management considers that our current level of interest rate risk is reasonable.

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	Within 6 Months			After 6 Months Within 1 Year			After 1 Year Within 3 Years			After 3 Years Within 5 Years			After 5 Years Within 10 Years			Over 10 Years			Total
Interest-earning assets: (1)
Construction loans	$	621,539		$	51,317		$	114,395		$	15,478		$	8,594		$	3,108		$	814,431
Fixed-rate mortgage loans	256,062			147,846			399,857			333,879			417,206			18,611			1,573,461
Adjustable-rate mortgage loans	920,065			309,561			933,360			762,968			294,265			6,709			3,226,928
Fixed-rate mortgage-backed securities	62,750			65,529			274,891			223,304			442,759			121,625			1,190,858
Adjustable-rate mortgage-backed securities	138,498			590			6,991			21,215			6,207			—			173,501
Fixed-rate commercial/agricultural loans	112,148			93,781			214,462			57,400			32,904			8,296			518,991
Adjustable-rate commercial/agricultural loans	815,554			18,831			53,816			24,086			11,397			—			923,684
Consumer and other loans	406,234			28,535			113,578			26,978			16,358			39,781			631,464
Investment securities and interest-earning deposits	113,877			26,723			59,095			52,960			70,061			63,805			386,521
Total rate sensitive assets	3,446,727			742,713			2,170,445			1,518,268			1,299,751			261,935			9,439,839
Interest-bearing liabilities: (2)
Regular savings	211,136			110,162			354,728			251,188			362,874			347,725			1,637,813
Interest checking accounts	149,915			64,405			212,842			156,104			232,961			227,614			1,043,841
Money market deposit accounts	168,069			110,639			355,222			247,927			340,060			237,698			1,459,615
Certificates of deposit	417,437			286,403			275,302			36,887			2,321			—			1,018,350
FHLB advances	192,006			6			25			28			87			43			192,195
Junior subordinated debentures	140,212			—			—			—			—			—			140,212
Retail repurchase agreements	101,844			—			—			—			—			—			101,844
Total rate sensitive liabilities	1,380,619			571,615			1,198,119			692,134			938,303			813,080			5,593,870
Excess (deficiency) of interest-sensitive assets over interest-sensitive liabilities	$	2,066,108		$	171,098		$	972,326		$	826,134		$	361,448		$	(551,145	)	$	3,845,969
Cumulative excess of interest-sensitive assets	$	2,066,108		$	2,237,206		$	3,209,532		$	4,035,666		$	4,397,114		$	3,845,969		$	3,845,969
Cumulative ratio of interest-earning assets to interest-bearing liabilities	249.65		%	214.60		%	201.88		%	205.03		%	191.97		%	168.75		%	168.75		%
Interest sensitivity gap to total assets	20.03		%	1.66		%	9.42		%	8.01		%	3.50		%	(5.34		)%	37.28		%
Ratio of cumulative gap to total assets	20.03		%	21.68		%	31.11		%	39.12		%	42.62		%	37.28		%	37.28		%

(Footnotes on following page)

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Footnotes for Table of Interest Sensitivity Gap

⁽¹⁾  Adjustable-rate assets are included in the period in which interest rates are next scheduled to adjust rather than in the period in which they are due to mature, and fixed-rate assets are included in the period in which they are scheduled to be repaid based upon scheduled amortization, in each case adjusted to take into account estimated prepayments.  Mortgage loans and other loans are not reduced for allowances for loan losses and non-performing loans.  Mortgage loans, mortgage-backed securities, other loans and investment securities are not adjusted for deferred fees, unamortized acquisition premiums and discounts.

⁽²⁾  Adjustable-rate liabilities are included in the period in which interest rates are next scheduled to adjust rather than in the period they are due to mature.  Although regular savings, demand, interest checking, and money market deposit accounts are subject to immediate withdrawal, based on historical experience management considers a substantial amount of such accounts to be core deposits having significantly longer maturities.  For the purpose of the gap analysis, these accounts have been assigned decay rates to reflect their longer effective maturities.  If all of these accounts had been assumed to be short-term, the one-year cumulative gap of interest-sensitive assets would have been $(1.09) billion, or (10.56)% of total assets at March 31, 2018.  Interest-bearing liabilities for this table exclude certain non-interest-bearing deposits which are included in the average balance calculations in the table contained in Item 2, “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Comparison of Results of Operations for the Three Months Ended March 31, 2018 and 2017” of this report on Form 10-Q.

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ITEM 4 – Controls and Procedures

The management of Banner Corporation is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Rule 13a-15(f) of the Securities Exchange Act of 1934 (Exchange Act).  A control procedure, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that its objectives are met.  Also, because of the inherent limitations in all control procedures, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, within the Company have been detected.  Additionally, in designing disclosure controls and procedures, our management necessarily was required to apply its judgment in evaluating the cost-benefit relationship of possible disclosure controls and procedures.  The design of any disclosure controls and procedures also is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions.  As a result of these inherent limitations, internal control over financial reporting may not prevent or detect misstatements.  Further, projections of any evaluation of effectiveness to future periods are subject to risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

(a) Evaluation of Disclosure Controls and Procedures:  An evaluation of our disclosure controls and procedures (as defined in Rule 13a-15(e) of the Exchange Act) was carried out under the supervision and with the participation of our Chief Executive Officer, Chief Financial Officer and several other members of our senior management as of the end of the period covered by this report.  Based on their evaluation, our Chief Executive Officer and Chief Financial Officer concluded that, as of March 31, 2018, our disclosure controls and procedures were effective in ensuring that the information required to be disclosed by us in the reports it files or submits under the Exchange Act is (i) accumulated and communicated to our management (including the Chief Executive Officer and Chief Financial Officer) in a timely manner, and (ii) recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms.

(b) Changes in Internal Controls Over Financial Reporting:  In the quarter ended March 31, 2018, there was no change in our internal control over financial reporting that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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PART II – OTHER INFORMATION

ITEM 1 – Legal Proceedings

In the normal course of business, we have various legal proceedings and other contingent matters outstanding.  These proceedings and the associated legal claims are often contested and the outcome of individual matters is not always predictable.  These claims and counter claims typically arise during the course of collection efforts on problem loans or with respect to actions to enforce liens on properties in which we hold a security interest, although we also periodically are subject to claims related to employment matters.  We are not a party to any pending legal proceedings that management believes would have a material adverse effect on our financial condition or operations.

ITEM 1A – Risk Factors

There have been no material changes in the risk factors previously disclosed in Part 1, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2017.

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 March 31, 2018:

Period	Total Number of Common Shares Purchased	Average Price Paid per Common Share		Total Number of Shares Purchased as Part of Publicly Announced authorization	Maximum Number of Remaining Shares that May be Purchased as Part of Publicly Announced Authorization
January 1, 2018 - January 31, 2018	35	$	55.20	—	1,113,079
February 1, 2018 - February 28, 2018	719	54.13		—	1,113,079
March 1, 2018 - March 31, 2018	277,398	56.89		269,711	1,621,549
Total for quarter	278,152	56.88		269,711	1,621,549

Employees surrendered 8,441 shares to satisfy tax withholding obligations upon the vesting of restricted stock grants.

On March 28, 2018, the Company announced that its Board of Directors had renewed its authorization to repurchase up to 5% of the Company's common stock, or 1,621,549 of the Company's outstanding shares. Under the authorization, shares may be repurchased by the Company in open market purchases. The extent to which the Company repurchases its shares and the timing of such repurchases will depend upon market conditions and other corporate considerations.

ITEM 3 – Defaults upon Senior Securities

Not Applicable.

ITEM 4 – Mine Safety Disclosures

Not Applicable.

ITEM 5 – Other Information

Not Applicable.

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ITEM 6 – Exhibits

Exhibit	Index of Exhibits
3{a}	Amended and Restated Articles of Incorporation of Registrant [incorporated by reference to the Registrant's Current Report on Form 8-K filed on April 29, 2010 (File No. 000-26584)].
3{b}	Articles of Amendment to Amended and Restated Articles of Incorporation of Registrant for non-voting common stock [incorporated by reference to the Registrant's Current Report on Form 8-K filed on March 18, 2015 (File No. 000-26584)]
3{c}	Amended and Restated Bylaws of Registrant [incorporated by reference to Exhibit 3.2 to the Registrant's Current Report on Form 8-K filed on December 20, 2016 (File No. 000-26584)].
4{a}	Warrant to purchase shares of the Registrant's common stock dated November 21, 2008 [incorporated by reference to the Registrant's Current Report on Form 8-K filed on November 24, 2008 (File No. 000-26584)]
10{a}	Executive Salary Continuation Agreement with Gary L. Sirmon [incorporated by reference to exhibits filed with the Annual Report on Form 10-K for the year ended March 31, 1996 (File No. 000-26584)].
10{b}	Amended and Restated Employment Agreement, with Mark J. Grescovich [incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K filed on June 4, 2013 (File No. 000-26584].
10{c}	Form of Supplemental Executive Retirement Program Agreement with Gary Sirmon, Michael K. Larsen, Lloyd W. Baker, Cynthia D. Purcell and Richard B. Barton [incorporated by reference to exhibits filed with the Annual Report on Form 10-K for the year ended December 31, 2001 and the exhibits filed with the Form 8-K on May 6, 2008 (File No. 000-26584)].
10{d}	Form of Employment Contract entered into with Lloyd W. Baker, Cynthia D. Purcell, Richard B. Barton and Douglas M. Bennett [incorporated by reference to exhibits filed with the Form 8-K on June 25, 2014 (File No. 000-26584)].
10{e}	Long-Term Incentive Plan and Form of Repricing Agreement [incorporated by reference to the exhibits filed with the Form 8-K on May 6, 2008 (File No. 000-26584)].
10{f}	2005 Executive Officer and Director Stock Account Deferred Compensation Plan [incorporated by reference to exhibits filed with the Annual Report on Form 10-K for the year ended December 31, 2008 (File No. 000-26584)].
10{g}	Entry into an Indemnification Agreement with each of the Registrant's Directors [incorporated by reference to exhibits filed with the Form 8-K on January 29, 2010 (File No. 000-26584)].
10{h}	2012 Restricted Stock and Incentive Bonus Plan [incorporated by reference to Appendix B to the Registrant's Definitive Proxy Statement on Schedule 14A filed on March 19, 2013 (File No. 000-26584)].
10{i}	Form of Performance-Based Restricted Stock Award Agreement [incorporated by reference to Exhibit 10.1 included in the Registrant's Current Report on Form 8-K filed on June 4, 2013 (File No. 000-26584)].
10{j}	Form of Time-Based Restricted Stock Award Agreement [incorporated by reference to Exhibit 10.1 included in the Registrant's Current Report on Form 8-K filed on June 4, 2013 (File No. 000-26584)].
10{k}	2014 Omnibus Incentive Plan [incorporated by reference as Appendix C to the Registrant's Definitive Proxy Statement on Schedule 14A filed on March 24, 2014 (File No. 000-26584)] and amendments [incorporated by reference to the Form 8-K filed on March 25, 2015 (File No. 000-26584)].
10{l}	Forms of Equity-Based Award Agreements: Incentive Stock Option Award Agreement, Non-Qualified Stock Option Award Agreement, Restricted Stock Award Agreement, Restricted Stock Unit Award Agreement, Stock Appreciation Right Award Agreement, and Performance Unit Award Agreement [incorporated by reference to Exhibits 10.2 - 10.7 included in the Registration Statement on Form S-8 dated May 9, 2014 (File No. 333-195835)].
31.1	Certification of Chief Executive Officer pursuant to the Securities Exchange Act Rules 13a-14(a) and 15d-14(a) as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2	Certification of Chief Financial Officer pursuant to the Securities Exchange Act Rules 13a-14(a) and 15d-14(a) as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32	Certificate of Chief Executive Officer and Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101	The following materials from Banner Corporation’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2018, formatted in Extensible Business Reporting Language (XBRL): (a) Consolidated Balance Sheets; (b) Consolidated Statements of Operations; (c) Consolidated Statements of Comprehensive Income; (d) Consolidated Statements of Shareholders' Equity; (e) Consolidated Statements of Cash Flows; and (f) Selected Notes to Consolidated Financial Statements.

69

SIGNATURES

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

	Banner Corporation
May 4, 2018	/s/ Mark J. Grescovich
	Mark J. Grescovich
	President and Chief Executive Officer (Principal Executive Officer)
May 4, 2018	/s/ Peter J. Conner
	Peter J. Conner
	Executive Vice President, Treasurer and Chief Financial Officer (Principal Financial and Accounting Officer)

70

EX-31.1

EXHIBIT 31.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER OF BANNER CORPORATION

PURSUANT TO RULES 13a-14(a) AND 15d-14(a) UNDER THE SECURITIES ACT OF 1934

I, Mark J. Grescovich, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2018 of Banner Corporation;

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 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 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.

May 4, 2018		/s/Mark J. Grescovich
	Mark J. Grescovich
	Chief Executive Officer

71

EX-31.2

EXHIBIT 31.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER OF BANNER CORPORATION

PURSUANT TO RULES 13a-14(a) AND 15d-14(a) UNDER THE SECURITIES ACT OF 1934

I, Peter J. Conner, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2018 of Banner Corporation;

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 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 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.

May 4, 2018		/s/ Peter J. Conner
	Peter J. Conner
	Chief Financial Officer

72

EX-32

EXHIBIT 32

CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER

OF BANNER CORPORATION

PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

The undersigned hereby certify in his capacity as an officer of Banner Corporation, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and in connection with this Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2018, that:

• the report fully complies with the requirements of Sections 13(a) and 15(d) of the Securities Exchange Act of 1934, as amended, and

• the information contained in the report fairly presents, in all material respects, the Company’s financial condition and results of operations as of the dates and for the periods presented in the financial statements included in such report.

May 4, 2018	/s/ Mark J. Grescovich
	Mark J. Grescovich
	Chief Executive Officer
May 4, 2018	/s/ Peter J. Conner
	Peter J. Conner
	Chief Financial Officer

73

XML

Document and Entity Information Document - shares	3 Months Ended
	Mar. 31, 2018	Apr. 30, 2018
Entity Information [Line Items]
Entity Registrant Name	Banner Corporation
Document Type	10-Q
Document Period End Date	Mar. 31, 2018
Amendment Flag	false
Entity Central Index Key	0000946673
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Voting Common Stock [Member]
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		32,331,108
Nonvoting Common Stock [Member]
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		76,928

XML

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017
ASSETS
Cash and due from banks		$ 188,418	$ 199,624
Interest bearing deposits		53,630	61,576
Total cash and cash equivalents		242,048	261,200
Securities—trading, amortized cost $27,275 and $27,246, respectively		25,574	22,318
Securities—available-for-sale, amortized cost $1,427,764 and $926,112, respectively		1,406,505	919,485
Securities—held-to-maturity, fair value $260,918 and $262,188, respectively		262,645	260,271
Federal Home Loan Bank (FHLB) stock		18,036	10,334
Loans held for sale (includes $137.7 million and $32.4 million, at fair value, respectively)		141,808	40,725
Loans receivable		7,556,046	7,598,884
Allowance for loan losses		92,207	89,028
Net loans		7,463,839	7,509,856
Accrued interest receivable		32,824	31,259
Real estate owned (REO), held for sale, net		328	360
Property and equipment, net		156,005	154,815
Goodwill		242,659	242,659
Other intangibles, net		21,251	22,655
Bank-owned life insurance (BOLI)		163,519	162,668
Deferred tax assets, net		76,843	71,427
Other assets		63,380	53,177
Total assets		10,317,264	9,763,209
Deposits:
Non-interest-bearing		3,383,439	3,265,544
Interest-bearing transaction and savings accounts		4,141,268	3,950,950
Interest-bearing certificates	[1]	1,018,355	966,937
Total deposits		8,543,062	8,183,431
Advances from FHLB		192,195	202
Other borrowings		101,844	95,860
Junior subordinated debentures at fair value (issued in connection with Trust Preferred Securities)		112,516	98,707
Accrued expenses and other liabilities		72,497	71,344
Deferred compensation		41,027	41,039
Total liabilities		9,063,141	8,490,583
COMMITMENTS AND CONTINGENCIES (Note 12)
SHAREHOLDERS’ EQUITY
Preferred stock - $0.01 par value per share, 500,000 shares authorized; no shares outstanding at March 31, 2018 and December 31, 2017		0	0
Retained earnings		79,773	90,535
Carrying value of shares held in trust for stock related compensation plans		7,371	7,351
Liability for common stock issued to stock related compensation plans		7,371	7,351
Accumulated other comprehensive income (loss) (AOCI)		1,390	(5,036)
Total shareholders' equity		1,254,123	1,272,626
Total liabilities & shareholders' equity		10,317,264	9,763,209
Voting Common Stock [Member]
SHAREHOLDERS’ EQUITY
Common stock and paid in capital		1,171,914	1,185,919
Nonvoting Common Stock [Member]
SHAREHOLDERS’ EQUITY
Common stock and paid in capital		$ 1,046	$ 1,208

[1] Certificates of deposit include $5,000 and $11,000 of acquisition premiums at March 31, 2018 and December 31, 2017, respectively.

XML

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
ASSETS
Securities—trading, amortized cost basis	$ 27,275	$ 27,246
Securities—available-for-sale, amortized cost basis	1,427,764	926,112
Securities—held-to-maturity, fair value	$ 260,918	$ 262,188
SHAREHOLDERS’ EQUITY
Preferred stock, share par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	500,000	500,000
Preferred stock, shares outstanding	0	0
Voting Common Stock [Member]
SHAREHOLDERS’ EQUITY
Common stock, share par value	$ 0.01	$ 0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	33,154,755	33,108,599
Common stock, shares outstanding	33,154,755	33,108,599
Nonvoting Common Stock [Member]
SHAREHOLDERS’ EQUITY
Common stock, share par value	$ 0.01	$ 0.01
Common stock, shares authorized	5,000,000	5,000,000
Common stock, shares issued	100,029	84,788
Common stock, shares outstanding	100,029	84,788
Loans [Member] | Recurring [Member]
ASSETS
Loans Held-for-sale, Fair Value Disclosure	$ 137,734	$ 32,392

XML

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
INTEREST INCOME:
Loans receivable	$ 94,022	$ 91,288
Mortgage-backed securities	7,331	4,647
Securities and cash equivalents	3,467	3,161
Total interest income	104,820	99,096
INTEREST EXPENSE:
Deposits	3,358	2,791
FHLB advances	677	273
Other borrowings	70	74
Junior subordinated debentures	1,342	1,104
Total interest expense	5,447	4,242
Net interest income	99,373	94,854
PROVISION FOR LOAN LOSSES	2,000	2,000
Net interest income after provision for loan losses	97,373	92,854
NON-INTEREST INCOME:
Deposit fees and other service charges	11,296	10,389
Mortgage banking operations	4,864	4,603
Bank-owned life insurance (BOLI)	853	1,095
Miscellaneous	1,037	3,636
Other operating income	18,050	19,723
Net gain on sale of securities	4	13
Net change in valuation of financial instruments carried at fair value	3,308	(688)
Total non-interest income	21,362	19,048
NON-INTEREST EXPENSE:
Salary and employee benefits	50,067	46,063
Less capitalized loan origination costs	(4,011)	(4,316)
Occupancy and equipment	11,766	11,996
Information/computer data services	4,381	3,994
Payment and card processing expenses	3,700	3,223
Professional services	4,428	5,152
Advertising and marketing	1,830	1,328
Deposit insurance	1,341	1,266
State/municipal business and use taxes	713	799
REO operations	439	(966)
Amortization of core deposit intangibles	1,382	1,624
Miscellaneous	5,670	6,118
Total non-interest expense	81,706	76,281
Income before provision for income taxes	37,029	35,621
PROVISION FOR INCOME TAXES	8,239	11,828
NET INCOME	$ 28,790	$ 23,793
Earnings per common share:
Basic	$ 0.89	$ 0.72
Diluted	0.89	0.72
Cumulative dividends declared per common share	$ 0.35	$ 0.25
Weighted average number of common shares outstanding, Basic	32,397,568	32,933,444
Weighted average number of common shares outstanding, Diluted	32,516,456	33,051,459

XML

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 28,790	$ 23,793
OTHER COMPREHENSIVE (LOSS) INCOME, NET OF INCOME TAXES:
Unrealized holding (loss) gain on available-for-sale securities arising during the period	(14,768)	2,448
Reclassification for net gains on available-for-sale securities realized in earnings	(2)	(13)
Changes in fair value of junior subordinated debentures related to instrument specific credit risk	(13,809)	0
Income tax related to other comprehensive (loss) income	6,802	(876)
Other comprehensive (loss) income	(21,777)	1,559
COMPREHENSIVE INCOME	$ 7,013	$ 25,352

XML

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock [Member]	Common Stock and Paid in Capital [Member]	Retained Earnings (Accumulated Deficit) [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance, beginning of the period (in shares) at Dec. 31, 2016		33,193,387
Balance, beginning of the period at Dec. 31, 2016	$ 1,305,710		$ 1,213,837	$ 95,328	$ (3,455)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	60,776			60,776
Other comprehensive loss, net of income tax	(786)				(786)
Reclassification of stranded tax effects from AOCI to retained earnings	0			795	(795)
Accrual of dividends on common stock	(66,364)			(66,364)
Repurchase of common stock		(545,166)
Proceeds from issuance of common stock for stockholder reinvestment program (in shares)		78,264
Repurchase of common stock, value	(31,045)		(31,045)
Amortization of stock-based compensation related to restricted stock grants, net of shares surrendered	4,335		4,335
Balance, end of the period (in shares) at Dec. 31, 2017		32,726,485
Balance, end of the period at Dec. 31, 2017	1,272,626		1,187,127	90,535	(5,036)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of reclassification of the instrument-specific credit risk portion of junior subordinated debentures fair value adjustments and reclassification of equity securities from available-for-sale	0			(28,203)	28,203
Net income	28,790			28,790
Other comprehensive loss, net of income tax	(21,777)				(21,777)
Accrual of dividends on common stock	(11,349)			(11,349)
Repurchase of common stock		(269,711)
Proceeds from issuance of common stock for stockholder reinvestment program (in shares)		(33,101)
Repurchase of common stock, value	(15,359)		(15,359)
Amortization of stock-based compensation related to restricted stock grants, net of shares surrendered	1,192		1,192
Balance, end of the period (in shares) at Mar. 31, 2018		32,423,673
Balance, end of the period at Mar. 31, 2018	$ 1,254,123		$ 1,172,960	$ 79,773	$ 1,390

XML

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Statement of Stockholders' Equity [Abstract]
Cumulative dividends declared per common share	$ 0.35	$ 0.25	$ 2.00

XML

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
OPERATING ACTIVITIES:
Net income	$ 28,790	$ 23,793
Adjustments to reconcile net income to net cash provided from operating activities:
Depreciation	3,584	2,888
Deferred income and expense, net of amortization	(608)	(265)
Amortization of core deposit intangibles	1,382	1,624
Gain on sale of securities	(4)	(13)
Net change in valuation of financial instruments carried at fair value	(3,308)	688
Proceeds from sales of securities—trading	0	0
Principal repayments and maturities of securities—trading	0	9
(Increase) decrease in deferred taxes	5,416	(3,625)
Increase in current taxes payable	6,569	295
Stock-based compensation	1,320	1,125
Increase in cash surrender value of BOLI	(844)	(1,085)
Gain on sale of loans, net of capitalized servicing rights	(3,375)	(5,496)
Loss (gain) on disposal of real estate held for sale and property and equipment	58	(1,039)
Provision for loan losses	2,000	2,000
Provision for losses on real estate held for sale	160	50
Origination of loans held for sale	(222,168)	(167,550)
Proceeds from sales of loans held for sale	124,460	339,878
Net change in:
Other assets	(5,100)	(9,412)
Other liabilities	(2,311)	(5,283)
Net cash (used in) provided from operating activities	(74,811)	185,832
INVESTING ACTIVITIES:
Purchases of securities—available-for-sale	(537,864)	(457,966)
Principal repayments and maturities of securities—available-for-sale	28,839	32,446
Proceeds from sales of securities—available-for-sale	0	2,165
Purchases of securities—held-to-maturity	(5,312)	0
Principal repayments and maturities of securities—held-to-maturity	2,358	954
Loan originations, net of principal repayments	40,846	119,569
Purchases of loans and participating interest in loans	(8,103)	(99,206)
Proceeds from sales of other loans	13,241	4,627
Purchases of property and equipment	(5,024)	(3,598)
Proceeds from sale of real estate held for sale and sale of other property, net	192	13,684
Proceeds from FHLB stock repurchase program	32,558	29,192
Purchase of FHLB stock	(40,260)	(27,020)
Other	228	75
Net cash used in investing activities	(478,301)	(385,078)
FINANCING ACTIVITIES:
Increase in deposits, net	359,631	300,546
Repayments of long-term Federal Home Loan Bank Advances	(2)	(2)
Proceeds from (repayments of) overnight and short term FHLB advances, net	192,000	(54,000)
Increase in other borrowings, net	5,984	14,560
Cash dividends paid	(8,165)	(7,615)
Taxes paid related to net share settlement of equity awards	129	445
Payments for Repurchase of Common Stock	15,359	809
Net cash provided from financing activities	533,960	252,235
NET CHANGE IN CASH AND CASH EQUIVALENTS	(19,152)	52,989
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	261,200	247,719
CASH AND CASH EQUIVALENTS, END OF PERIOD	242,048	300,708
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Interest paid in cash	5,185	4,202
(Refunds received) taxes paid, net	(3)	8,543
NON-CASH INVESTING AND FINANCING TRANSACTIONS:
Loans, net of discounts, specific loss allowances and unearned income, transferred to real estate owned and other repossessed assets	976	0
Dividends Payable	$ 11,450	$ 8,338

XML

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

3 Months Ended

Mar. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

 BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

The accompanying unaudited condensed consolidated financial statements include the accounts of Banner Corporation (the Company or Banner), a bank holding company incorporated in the State of Washington and its wholly-owned subsidiaries, Banner Bank and Islanders Bank (the Banks).

These unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (GAAP) for interim financial information and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X as promulgated by the Securities and Exchange Commission (SEC). In preparing these financial statements, the Company has evaluated events and transactions subsequent to March 31, 2018 for potential recognition or disclosure. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of the financial position and results of operations for the periods presented have been included. Certain information and disclosures normally included in annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to the rules and regulations of the SEC and the accounting standards for interim financial statements. Certain reclassifications have been made to the 2017 Consolidated Financial Statements and/or schedules to conform to the 2018 presentation. These reclassifications may have affected certain ratios for the prior periods. The effect of these reclassifications is considered immaterial. All significant intercompany transactions and balances have been eliminated.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect amounts reported in the financial statements. Various elements of the Company’s accounting policies, by their nature, are inherently subject to estimation techniques, valuation assumptions and other subjective assessments. In particular, management has identified several accounting policies that, due to the judgments, estimates and assumptions inherent in those policies, are significant to an understanding of Banner’s financial statements. These policies relate to (i) the methodology for the recognition of interest income, (ii) determination of the provision and allowance for loan losses, (iii) the valuation of financial assets and liabilities recorded at fair value, including other-than-temporary impairment (OTTI) losses, (iv) the valuation of intangibles, such as goodwill, core deposit intangibles (CDI) and mortgage servicing rights, (v) the valuation of real estate held for sale, (vi) the valuation of assets and liabilities acquired in business combinations and subsequent recognition of related income and expense, and (vii) the valuation or recognition of deferred tax assets and liabilities. These policies and judgments, estimates and assumptions are described in greater detail in subsequent notes to the Consolidated Financial Statements and Management’s Discussion and Analysis of Financial Condition and Results of Operations (Critical Accounting Policies) in our Annual Report on Form 10-K for the year ended December 31, 2017 filed with the SEC (2017 Form 10-K).  There have been no significant changes in our application of these accounting policies during the first three months of 2018, except as described in Note 2.

The information included in this Form 10-Q should be read in conjunction with our 2017 Form 10-K.  Interim results are not necessarily indicative of results for a full year or any other interim period.

XML

ACCOUNTING STANDARDS RECENTLY ISSUED OR ADOPTED

3 Months Ended

Mar. 31, 2018

Accounting Changes and Error Corrections [Abstract]

ACCOUNTING STANDARDS RECENTLY ISSUED OR ADOPTED

ACCOUNTING STANDARDS RECENTLY ISSUED OR ADOPTED

Revenue from Contracts with Customers

In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2014-09, Revenue from Contracts with Customers, which creates Topic 606 and supersedes Topic 605, Revenue Recognition. Subsequent to the issuance of ASU 2014-09, FASB issued ASU 2016-10 in April 2016 and issued ASU 2016-12 in May 2016. Both of these ASUs amend or clarify aspects of Topic 606. The core principle of Topic 606 is that anentity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to whichthe entity expects to be entitled in exchange for those goods or services. In general, the new guidance requires companies to use more judgmentand make more estimates than under current guidance, including identifying performance obligations in the contract, estimating the amount ofvariable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. The Company adopted Topic 606 on January 1, 2018 using the full retrospective method, meaning the standard is applied to all periods presented in the financial statements with the cumulative effect of initially applying the standard recognized at the beginning of the earliest period presented. In adopting Topic 606, the Company applied the following five steps in determining the correct treatment for the applicable revenue streams:

1. Identify the contract with a customer;

2. Identify the performance obligations in the contract;

3. Determine the transaction price;

4. Allocate the transaction price to performance obligations in the contract, and

5. Recognize revenue when or as the Company satisfies the performance obligation.

The majority of the Company’s revenue streams including interest income, deferred loan fee accretion, premium/discount accretion, gains on sales of loans and investments, loan servicing income and other loan fee income are outside the scope of Topic 606. Revenue streams reported as deposit fees and other service charges which include transaction based deposit fees, non-transaction based deposit fees, interchange fees on credit and debit cards and merchant service fees are within the scope of Topic 606. The Company applied the requirements of Topic 606 to the revenue streams that are within its scope. The adoption of Topic 606 did not result in any changes in the either timing or amount of recognized revenue in prior periods by the Company however, the presentation of certain costs associated with our merchant services will now be offset against deposit fees and other service charges in non-interest income. The Company previously recognized payment network related fees that were collected by Company and passed through to another party related to its merchant services as non-interest expense. The change in presentation resulted in $1.8 million of expenses for the three months ended March 31, 2018 being netted against deposit fees and other services charges and reported in non-interest income instead of as payment and card processing expenses in non-interest expense. In addition, to conform to the current period presentation, $1.8 million of merchant services related expenses for the three months ended March 31, 2017 were reclassified from payment and card processing expense in non-interest expense to being netted against deposit fees and other service charges in non-interest income. The Company elected to apply the practical expedient and therefore does not disclose information about remaining performance obligations that have an original expected term of one year or less and allows the Company to expense costs related to obtaining a contract as incurred when the amortization period would have been one year or less.

The following table presents the impact of adopting of the new revenue standard on our Consolidated Statements of Operations for the three months ended March 31, 2018 and 2017 (in thousands):

	For the three months ended March 31, 2018							For the three months ended March 31, 2017
	As Reported		Balance without Adoption of ASC 606		Effect of Change			As Reported		Balance without Adoption of ASC 606		Effect of Change
Non-interest income:
Deposit fees and other service charges	$	11,296	$	13,100	$	(1,804	)	$	10,389	$	12,186	$	(1,797	)
Non-interest expense:
Payment and card processing expenses	$	3,700	$	5,504	$	(1,804	)	$	3,223	$	5,020	$	(1,797	)

Recognition and Measurement of Financial Assets and Financial Liabilities

In January 2016, FASB issued ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities. The amendments in this ASU require equity securities to be measured at fair value with changes in the fair value recognized through net income. The amendments allow equity investments that do not have readily determinable fair values to be remeasured at fair value under certain circumstances and require enhanced disclosures about those investments. This ASU simplifies the impairment assessment of equity investments without readily determinable fair values. This ASU also eliminates the requirement to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet. The amendments in this ASU require separate presentation in other comprehensive income of the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. This ASU excludes from net income gains or losses that the entity may not realize because those financial liabilities are not usually transferred or settled at their fair values before maturity. The amendments in this ASU require separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (that is, securities or loans and receivables) on the balance sheet or in the accompanying notes to the financial statements. The Company adopted this ASU on January 1, 2018. The adoption of this ASU resulted in the Company reclassifying $28.1 million from retained earnings to AOCI for the cumulative fair value adjustments on its junior subordinated debentures related to instrument specific credit risk. During the quarter end March 31, 2018, the Company recorded a $10.5 million, net of tax, reduction in other comprehensive income (loss) for the change in instrument specific credit risk on its junior subordinated debentures; prior to the adoption of this ASU this amount would have been recorded in the Consolidated Statement of Operations. In addition, as a result of adopting this ASU the Company recorded a $137,000 reduction in retained earnings representing the unrealized loss on available for sale equity securities at the date of adoption. Any future changes in fair value on equity securities will be recorded in the Consolidated Statement of Operations. During the quarter ended March 31, 2018, the Company recorded a $70,000 loss for the decrease in fair value of its equity securities as a component of the net change in financial instruments carried at fair value in the Consolidated Statement of Operations. At March 31, 2018, the Company held $5.7 million of equity investment securities which were previously reported as available for sale securities and are now reported in other assets.

In addition, the adoption of this ASU resulted in changing how the Company estimates the fair value portfolio loans for disclosure purposes. Fair values are estimated first by stratifying the portfolios of loans with similar financial characteristics.  Loans are segregated by type such as multifamily real estate, residential mortgage, nonresidential mortgage, commercial/agricultural, consumer and other.  Each loan category is further segmented into fixed- and adjustable-rate interest terms. An estimate of fair value is then calculated based on discounted cash flows using as a discount rate the current rate offered on similar products, plus an adjustment for liquidity to reflect the non-homogeneous nature of the loans, as well as, a quarterly loss rate based on historical losses to arrive at an estimated exit price fair value. Fair value for impaired loans is also based on recent appraisals or estimated cash flows discounted using rates commensurate with risk associated with the estimated cash flows.  Assumptions regarding credit risk, cash flows and discount rates are judgmentally determined using available market information and specific borrower information.

In February 2018, FASB issued ASU No. 2018-03, Technical Corrections and Improvements to Financial Instruments—Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. The amendments in this ASU do not change the core principle of the guidance in Subtopic 825-10. Rather, the amendments in this ASU clarify the application of the guidance regarding the fair value measurement of equity securities without readily determinable fair value. The Company adopted this ASU on January 1, 2018. The impact of the Company's adoption of this ASU is described in the preceding paragraph.

Leases (Topic 842)

In February 2016, FASB issued ASU No. 2016-02, Leases (Topic 842). The amendments in this ASU require lessees to recognize the following for all leases (with the exception of short-term) at the commencement date; a lease liability, which is a lessee‘s obligation to make lease payments arising from a lease, measured on a discounted basis; and a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. The amendments in this ASU leave lessor accounting largely unchanged, although certain targeted improvements were made to align lessor accounting with the lessee accounting model. This ASU simplifies the accounting for sale and leaseback transactions primarily because lessees must recognize lease assets and lease liabilities. Lessees will no longer be provided with a source of off-balance sheet financing. The amendments in this ASU are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early application is permitted upon issuance. Lessees (for capital and operating leases) and lessors (for sales-type, direct financing, and operating leases) must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The modified retrospective approach would not require any transition accounting for leases that expired before the earliest comparative period presented. Lessees and lessors may not apply a full retrospective transition approach. The Company is currently evaluating the provisions of ASU No. 2016-02 to determine the potential impact the new standard will have on the Company's Consolidated Financial Statements and regulatory capital ratios and has contracted with a third party software solution to meet the new requirements of this ASU, with implementation currently in process. The Company leases 107 buildings and offices under non-cancelable operating leases, the majority of which will be subject to this ASU. While the Company has not quantified the impact to its balance sheet, upon the adoption of this ASU the Company expects to report increased assets and increased liabilities on its Consolidated Statements of Financial Condition as a result of recognizing right-of-use assets and lease liabilities related to these leases and certain equipment under non-cancelable operating lease agreements, which currently are not reflected in its Consolidated Statements of Financial Condition.

Financial Instruments—Credit Losses (Topic 326)

In June 2016, FASB issued ASU No. 2016-13, Measurement of Credit Losses on Financial Instruments. Current GAAP requires an “incurred loss” methodology for recognizing credit losses that delays recognition until it is probable a loss has been incurred. The main objective of this ASU is to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. The ASU affects loans, debt securities, trade receivables, net investments in leases, off-balance-sheet credit exposures, reinsurance receivables, and any other financial asset not excluded from the scope that have the contractual right to receive cash. The ASU replaces the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. This ASU requires a financial asset (or group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. The measurement of expected credit losses will be based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. This ASU broadens the information that an entity must consider in developing its expected credit loss estimate for assets measured either collectively or individually. The use of forecasted information incorporates more timely information in the estimate of expected credit loss, which will be more decision useful to users of the financial statements. This ASU will be effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The Company is still evaluating the effects this ASU will have on the Company’s Consolidated Financial Statements. The Company has formed an internal committee to oversee the project, engaged a third-party vendor to assist with the project and has completed its gap analysis phase of the project. In addition, the Company is in the process of selecting a second third-party vendor to assist with building and developing the required models. Upon adoption, the Company expects changes in the processes and procedures used to calculate the allowance for loan losses, including changes in assumptions and estimates to consider expected credit losses over the life of the loan versus the current accounting practice that utilizes the incurred loss model. The new guidance may result in an increase in the allowance for loan losses which will also reflect the new requirement to include the nonaccretable principal differences on purchased credit-impaired loans; however, the Company is still in the process of determining the magnitude of the change and its impact on the Consolidated Financial Statements. In addition, the current accounting policy and procedures for other-than-temporary impairment on investment securities available-for-sale will be replaced with an allowance approach.

Receivables—Nonrefundable Fees and Other Costs (Subtopic 310-20)

In March 2017, FASB issued ASU No. 2017-08, Premium Amortization on Purchased Callable Debt Securities. The amendments in this ASU shorten the premium amortization period for callable debt securities purchased at a premium. Specifically, the amendments require the premium to be amortized to the earliest call date. Under current GAAP, premiums and discounts on callable debt securities generally are amortized to the maturity date. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to the maturity date. The amendments in this ASU more closely align the amortization period of premiums and discounts to expectations incorporated in market pricing on the underlying securities. The amendments in this ASU are effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. The Company is still evaluating the effects this ASU will have on the Company’s Consolidated Financial Statements.

Derivatives and Hedging (Topic 815)

In August 2017, FASB issued ASU No. 2017-12, Targeted Improvements to Accounting for Hedging Activities. The amendments in this ASU are intended to provide investors better insight to an entity's risk management hedging strategies by permitting a company to recognize the economic results of its hedging strategies in its financial statements. The amendments in this ASU permit hedge accounting for hedging relationships involving nonfinancial risk and interest rate risk by removing certain limitations in cash flow and fair value hedging relationships. In addition, the ASU requires an entity to present the earnings effect of the hedging instrument in the same income statement line item in which the earnings effect of the hedged item is reported. This ASU is effective for fiscal years beginning after December 15, 2018, and early adoption is permitted. Adoption of ASU 2017-12 is not expected to have a material impact on the Company's Consolidated Financial Statements.

Income Statement - Reporting Comprehensive Income (Topic 220)

In February 2018, FASB Issued ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. This ASU allows a reclassification from AOCI to retained earnings for the stranded tax effects on available-for-sale securities resulting from the 2017 Tax Act. The ASU eliminates the stranded tax effects resulting from the 2017 Tax Act and improves the usefulness of information reported to financial statement users. The ASU also requires certain disclosures about the stranded tax effects. This ASU is effective for all entities for fiscal years beginning after December 15, 2018. Early adoption is permitted, including adoption in any interim period, for reporting periods for which financial statements have not yet been issued. The ASU should be applied to either in the period of adoption or retrospectively to each period in which the effect of the change in the federal corporate tax rate is recognized. The Company elected to early adopt this ASU and to reclassify $795,000 of stranded tax effects from AOCI to retained earnings in the fourth quarter of 2017.

Income Taxes (Topic 740)

In March 2018, FASB issued ASU No. 2018-05, Income Taxes (Topic 740). This ASU was issued to provide guidance on the income tax accounting implications of the Tax Cuts and Jobs Act (the Act) and allows for entities to report provisional amounts for specific income tax effects of the Act for which the accounting under ASC Topic 740 was not yet complete but a reasonable estimate could be determined. A measurement period of one year is allowed to complete the accounting effects under ASC Topic 740 and revise any previous estimates reported. Any provisional amounts or subsequent adjustments included in an entity’s financial statements during the measurement period should be included in income from continuing operations as an adjustment to tax expense in the reporting period the amounts are determined. The Company adopted this ASU with the provisional adjustments as reported in the Consolidated Financial Statements in the 2017 Form 10-K. As of March 31, 2018, the Company did not incur any adjustments to the provisional recognition.

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SECURITIES

3 Months Ended

Mar. 31, 2018

Investments, Debt and Equity Securities [Abstract]

INTEREST-BEARING DEPOSITS AND SECURITIES

SECURITIES

The amortized cost, gross unrealized gains and losses and estimated fair value of securities at March 31, 2018 and December 31, 2017 are summarized as follows (in thousands):

	March 31, 2018
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Trading:
Municipal bonds	$	100						$	100
Corporate bonds	27,175							25,474
	$	27,275						$	25,574
Available-for-Sale:
U.S. Government and agency obligations	$	145,280	$	10	$	(1,984	)	$	143,306
Municipal bonds	69,516		315		(873		)	68,958
Corporate bonds	6,152		5		(45		)	6,112
Mortgage-backed or related securities	1,179,084		718		(19,389		)	1,160,413
Asset-backed securities	27,732		128		(144		)	27,716
	$	1,427,764	$	1,176	$	(22,435	)	$	1,406,505
Held-to-Maturity:
U.S. Government and agency obligations	$	1,260	$	27	$	—		$	1,287
Municipal bonds:	192,931		2,334		(2,644		)	192,621
Corporate bonds	3,941		—		(8		)	3,933
Mortgage-backed or related securities	64,513		19		(1,455		)	63,077
	$	262,645	$	2,380	$	(4,107	)	$	260,918

	December 31, 2017
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Trading:
Municipal bonds	$	100						$	100
Corporate bonds	27,132							22,058
Equity securities	14							160
	$	27,246						$	22,318
Available-for-Sale:
U.S. Government and agency obligations	$	72,829	$	68	$	(431	)	$	72,466
Municipal bonds	68,513		665		(445		)	68,733
Corporate bonds	5,431		6		(44		)	5,393
Mortgage-backed or related securities	745,956		1,003		(7,402		)	739,557
Asset-backed securities	27,667		184		(93		)	27,758
Equity securities	5,716		10		(148		)	5,578
	$	926,112	$	1,936	$	(8,563	)	$	919,485
Held-to-Maturity:
U.S. Government and agency obligations	$	1,024	$	29	$	—		$	1,053
Municipal bonds:	189,860		3,385		(1,252		)	191,993
Corporate bonds	3,978		7		—			3,985
Mortgage-backed or related securities	65,409		266		(518		)	65,157
	$	260,271	$	3,687	$	(1,770	)	$	262,188

At March 31, 2018 and December 31, 2017, the gross unrealized losses and the fair value for securities available-for-sale and held-to-maturity aggregated by the length of time that individual securities have been in a continuous unrealized loss position was as follows (in thousands):

	March 31, 2018
	Less Than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Available-for-Sale:
U.S. Government and agency obligations	$	112,704	$	(1,479	)	$	22,943	$	(505	)	$	135,647	$	(1,984	)
Municipal bonds	30,019		(463		)	13,065		(410		)	43,084		(873		)
Corporate bonds	647		(7		)	4,550		(38		)	5,197		(45		)
Mortgage-backed or related securities	835,758		(15,250		)	114,653		(4,139		)	950,411		(19,389		)
Asset-backed securities	—		—			9,873		(144		)	9,873		(144		)
	$	979,128	$	(17,199	)	$	165,084	$	(5,236	)	$	1,144,212	$	(22,435	)
Held-to-Maturity
Municipal bonds	$	55,484	$	(669	)	$	32,189	$	(1,975	)	$	87,673	$	(2,644	)
Corporate bonds	492		(8		)	—		—			492		(8		)
Mortgage-backed or related securities	54,224		(1,229		)	4,315		(226		)	58,539		(1,455		)
	$	110,200	$	(1,906	)	$	36,504	$	(2,201	)	$	146,704	$	(4,107	)
	December 31, 2017
	Less Than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Available-for-Sale:
U.S. Government and agency obligations	$	31,276	$	(211	)	$	23,341	$	(220	)	$	54,617	$	(431	)
Municipal bonds	20,879		(185		)	13,360		(260		)	34,239		(445		)
Corporate bonds	296		(4		)	4,682		(40		)	4,978		(44		)
Mortgage-backed or related securities	559,916		(5,138		)	100,662		(2,264		)	660,578		(7,402		)
Asset-backed securities	—		—			9,926		(93		)	9,926		(93		)
Equity securities	5,480		(148		)	—		—			5,480		(148		)
	$	617,847	$	(5,686	)	$	151,971	$	(2,877	)	$	769,818	$	(8,563	)
Held-to-Maturity
Municipal bonds	21,839		(171		)	34,314		(1,081		)	56,153		(1,252		)
Mortgage-backed or related securities	38,023		(378		)	4,434		(140		)	42,457		(518		)
	$	59,862	$	(549	)	$	38,748	$	(1,221	)	$	98,610	$	(1,770	)

At March 31, 2018, there were 277 securities—available-for-sale with unrealized losses, compared to 226 at December 31, 2017.  At March 31, 2018, there were 100 securities—held-to-maturity with unrealized losses, compared to 66 at December 31, 2017.  Management does not believe that any individual unrealized loss as of March 31, 2018 or December 31, 2017 represented other-than-temporary impairment (OTTI).  The decline in fair market value of these securities was generally due to changes in interest rates and changes in market-desired spreads subsequent to their purchase.

There were no sales of securities—trading during the three-month periods ended March 31, 2018 or 2017. The Company did not recognize any OTTI charges or recoveries on securities—trading during the three-month periods ended March 31, 2018 or 2017. There were no securities—trading in a nonaccrual status at March 31, 2018 or December 31, 2017.  Net unrealized holding gains of $3.4 million were recognized during the three months ended March 31, 2018 compared to $152,000 of net unrealized holdings gains recognized during the three months ended March 31, 2017.

There were no sales of securities—available-for-sale during the three months ended March 31, 2018, although partial calls of securities resulted in a net gain of $4,000 for the three months ended March 31, 2018.  Sales of securities—available-for-sale totaled $2.2 million which resulted in a net gain of $13,000 for the three months ended March 31, 2017. There were no securities—available-for-sale in a nonaccrual status at March 31, 2018 or December 31, 2017.

There were no sales of securities—held-to-maturity during the three-month periods ended March 31, 2018 and 2017. There were no securities—held-to-maturity in a nonaccrual status at March 31, 2018 or December 31, 2017.

The amortized cost and estimated fair value of securities at March 31, 2018, by contractual maturity, are shown below (in thousands). Expected maturities will differ from contractual maturities because some securities may be called or prepaid with or without call or prepayment penalties.

	March 31, 2018
	Trading				Available-for-Sale				Held-to-Maturity
	Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value
Maturing in one year or less	$	100	$	100	$	3,090	$	3,081	$	1,943	$	1,942
Maturing after one year through five years	—		—		63,013		62,113		38,334		37,896
Maturing after five years through ten years	—		—		281,112		276,039		96,044		95,696
Maturing after ten years through twenty years	17,175		16,889		186,470		184,722		84,150		85,000
Maturing after twenty years	10,000		8,585		894,079		880,550		42,174		40,384
	$	27,275	$	25,574	$	1,427,764	$	1,406,505	$	262,645	$	260,918

The following table presents, as of March 31, 2018, investment securities which were pledged to secure borrowings, public deposits or other obligations as permitted or required by law (in thousands):

	March 31, 2018
	Carrying Value		Amortized Cost		Fair Value
Purpose or beneficiary:
State and local governments public deposits	$	129,288	$	129,325	$	130,478
Interest rate swap counterparties	14,924		15,089		14,762
Repurchase agreements	118,820		120,410		118,588
Other	3,900		3,900		3,744
Total pledged securities	$	266,932	$	268,724	$	267,572

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LOANS RECEIVABLE AND THE ALLOWANCE FOR LOAN LOSSES

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

LOANS RECEIVABLE AND THE ALLOWANCE FOR LOAN LOSSES

LOANS RECEIVABLE AND THE ALLOWANCE FOR LOAN LOSSES

Loans receivable at March 31, 2018 and December 31, 2017 are summarized as follows (dollars in thousands):

	March 31, 2018					December 31, 2017
	Amount			Percent of Total		Amount			Percent of Total
Commercial real estate:
Owner-occupied	$	1,278,814		16.9	%	$	1,284,363		16.9	%
Investment properties	1,876,937			24.8		1,937,423			25.5
Multifamily real estate	321,039			4.2		314,188			4.1
Commercial construction	163,314			2.2		148,435			2.0
Multifamily construction	159,108			2.1		154,662			2.0
One- to four-family construction	434,204			5.7		415,327			5.5
Land and land development:
Residential	167,783			2.2		164,516			2.2
Commercial	24,331			0.3		24,583			0.3
Commercial business	1,296,691			17.2		1,279,894			16.8
Agricultural business, including secured by farmland	307,243			4.2		338,388			4.4
One- to four-family residential	833,598			11.0		848,289			11.2
Consumer:
Consumer secured by one- to four-family	522,826			6.9		522,931			6.9
Consumer—other	170,158			2.3		165,885			2.2
Total loans	7,556,046			100.0	%	7,598,884			100.0	%
Less allowance for loan losses	(92,207		)			(89,028		)
Net loans	$	7,463,839				$	7,509,856

Loan amounts are net of unearned loan fees in excess of unamortized costs of $731,000 as of March 31, 2018 and were net of unamortized costs of $158,000 as of December 31, 2017. Net loans include net discounts on acquired loans of $19.4 million and $21.1 million as of March 31, 2018 and December 31, 2017, respectively.

Purchased credit-impaired loans and purchased non-credit-impaired loans. Purchased loans, including loans acquired in business combinations, are recorded at their fair value at the acquisition date. Credit discounts are included in the determination of fair value; therefore, an allowance for loan and lease losses is not recorded at the acquisition date. Acquired loans are evaluated upon acquisition and classified as either purchased credit-impaired (PCI) or purchased non-credit-impaired. PCI loans reflect credit deterioration since origination such that it is probable at acquisition that the Company will be unable to collect all contractually required payments. The outstanding contractual unpaid principal balance of PCI loans, excluding acquisition accounting adjustments, was $29.8 million at March 31, 2018 and $32.5 million at December 31, 2017. The carrying balance of PCI loans was $19.3 million at March 31, 2018 and $21.3 million at December 31, 2017.

The following table presents the changes in the accretable yield for PCI loans for the three months ended March 31, 2018 and 2017 (in thousands):

	Three Months Ended March 31,
	2018			2017
Balance, beginning of period	$	6,520		$	8,717
Accretion to interest income	(1,097		)	(1,320		)
Disposals	58			—
Reclassifications from non-accretable difference	807			1,273
Balance, end of period	$	6,288		$	8,670

As of March 31, 2018 and December 31, 2017, the non-accretable difference between the contractually required payments and cash flows expected to be collected were $9.9 million and $11.3 million, respectively.

Impaired Loans and the Allowance for Loan Losses.  A loan is considered impaired when, based on current information and circumstances, the Company determines it is probable that it will be unable to collect all amounts due according to the contractual terms of the loan agreement, including scheduled interest payments.  Factors involved in determining impairment include, but are not limited to, the financial condition of the borrower, the value of the underlying collateral and the current status of the economy. Impaired loans are comprised of loans on nonaccrual, troubled debt restructurings (TDRs) that are performing under their restructured terms, and loans that are 90 days or more past due, but are still on accrual. PCI loans are considered performing within the scope of the purchased credit-impaired accounting guidance and are not included in the impaired loan tables.

The following tables provide information on impaired loans, excluding PCI loans, with and without allowance reserves at March 31, 2018 and December 31, 2017. Recorded investment includes the unpaid principal balance or the carrying amount of loans less charge-offs and net deferred loan fees (in thousands):

	March 31, 2018
	Unpaid Principal Balance		Recorded Investment				Related Allowance
			Without Allowance (1)		With Allowance (2)
Commercial real estate:
Owner-occupied	$	3,872	$	3,444	$	199	$	20
Investment properties	9,346		3,433		5,699		264
One- to four-family construction	186		186		—		—
Land and land development:
Residential	1,134		798		—		—
Commercial business	4,008		3,038		534		39
Agricultural business/farmland	9,598		6,440		3,031		201
One- to four-family residential	8,579		3,136		5,362		182
Consumer:
Consumer secured by one- to four-family	1,346		1,168		138		7
Consumer—other	180		76		71		4
	$	38,249	$	21,719	$	15,034	$	717
	December 31, 2017
	Unpaid Principal Balance		Recorded Investment				Related Allowance
			Without Allowance (1)		With Allowance (2)
Commercial real estate:
Owner-occupied	$	7,807	$	6,447	$	199	$	18
Investment properties	11,296		4,200		6,884		263
One- to four-family construction	298		298		—		—
Land and land development:
Residential	1,134		798		—		—
Commercial business	4,441		3,424		555		50
Agricultural business/farmland	9,388		6,230		3,031		264
One- to four-family residential	9,547		3,709		5,775		178
Consumer:
Consumer secured by one- to four-family	1,498		1,324		139		7
Consumer—other	134		58		73		2
	$	45,543	$	26,488	$	16,656	$	782

⁽¹⁾  Includes loans without an allowance reserve that have been individually evaluated for impairment and that evaluation concluded that no reserve was needed, and $10.6 million of homogenous and small balance loans as of both March 31, 2018 and December 31, 2017, that are collectively evaluated for impairment for which a general reserve has been established.

⁽²⁾  Loans with a specific allowance reserve have been individually evaluated for impairment using either a discounted cash flow analysis or, for collateral dependent loans, current appraisals less costs to sell to establish realizable value.

The following tables summarize our average recorded investment and interest income recognized on impaired loans by loan class for the three months ended March 31, 2018 and 2017 (in thousands):

	Three Months Ended March 31, 2018				Three Months Ended March 31, 2017
	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
Commercial real estate:
Owner-occupied	$	5,383	$	3	$	2,916	$	2
Investment properties	9,972		83		8,893		49
Multifamily real estate	—		—		495		4
One- to four-family construction	605		4		1,180		20
Land and land development:
Residential	798		—		1,899		17
Commercial	—		—		977		—
Commercial business	4,007		7		4,504		7
Agricultural business/farmland	9,109		33		6,282		32
One- to four-family residential	8,892		101		10,404		83
Consumer:
Consumer secured by one- to four-family	1,390		2		1,742		3
Consumer—other	149		1		268		3
	$	40,305	$	234	$	39,560	$	220

Troubled Debt Restructurings. Some of the Company’s loans are reported as TDRs.  Loans are reported as TDRs when the bank grants one or more concessions to a borrower experiencing financial difficulties that it would not otherwise consider.  Examples of such concessions include forgiveness of principal or accrued interest, extending the maturity date(s) or providing a lower interest rate than would be normally available for a transaction of similar risk.  Our TDRs have generally not involved forgiveness of amounts due, but almost always include a modification of multiple factors; the most common combination includes interest rate, payment amount and maturity date. As a result of these concessions, restructured loans are impaired as the Company will not collect all amounts due, both principal and interest, in accordance with the terms of the original loan agreement.  Loans identified as TDRs are accounted for in accordance with the Company's impaired loan accounting policies.

The following table presents TDRs by accrual and nonaccrual status at March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018						December 31, 2017
	Accrual Status		Nonaccrual Status		Total TDRs		Accrual Status		Nonaccrual Status		Total TDRs
Commercial real estate:
Owner-occupied	$	199	$	85	$	284	$	199	$	87	$	286
Investment properties	5,699		—		5,699		6,884		—		6,884
Commercial business	534		—		534		555		—		555
Agricultural business, including secured by farmland	2,531		29		2,560		3,129		29		3,158
One- to four-family residential	5,092		457		5,549		5,136		801		5,937
Consumer:
Consumer secured by one- to four-family	138		—		138		139		—		139
Consumer—other	71		—		71		73		—		73
	$	14,264	$	571	$	14,835	$	16,115	$	917	$	17,032

As of both March 31, 2018 and December 31, 2017, the Company had commitments to advance additional funds related to TDRs up to $45,000.

No new TDRs occurred during the three months ended March 31, 2018 or 2017.

There were no TDRs which incurred a payment default within twelve months of the restructure date during the three-month periods ended March 31, 2018 and 2017. A default on a TDR results in either a transfer to nonaccrual status or a partial charge-off, or both.

Credit Quality Indicators:  To appropriately and effectively manage the ongoing credit quality of the Company’s loan portfolio, management has implemented a risk-rating or loan grading system for its loans.  The system is a tool to evaluate portfolio asset quality throughout each applicable loan’s life as an asset of the Company.  Generally, loans and leases are risk rated on an aggregate borrower/relationship basis with individual loans sharing similar ratings.  There are some instances when specific situations relating to individual loans will provide the basis for different risk ratings within the aggregate relationship.  Loans are graded on a scale of 1 to 9.  A description of the general characteristics of these categories is shown below:

Overall Risk Rating Definitions:  Risk-ratings contain both qualitative and quantitative measurements and take into account the financial strength of a borrower and the structure of the loan or lease.  Consequently, the definitions are to be applied in the context of each lending transaction and judgment must also be used to determine the appropriate risk rating, as it is not unusual for a loan or lease to exhibit characteristics of more than one risk-rating category.  Consideration for the final rating is centered in the borrower’s ability to repay, in a timely fashion, both principal and interest.  There were no material changes in the risk-rating or loan grading system in the three months ended March 31, 2018.

Risk Rating 1: Exceptional

A credit supported by exceptional financial strength, stability, and liquidity.  The risk rating of 1 is reserved for the Company’s top quality loans, generally reserved for investment grade credits underwritten to the standards of institutional credit providers.

Risk Rating 2: Excellent

A credit supported by excellent financial strength, stability and liquidity.  The risk rating of 2 is reserved for very strong and highly stable customers with ready access to alternative financing sources.

Risk Rating 3: Strong

A credit supported by good overall financial strength and stability.  Collateral margins are strong; cash flow is stable although susceptible to cyclical market changes.

Risk Rating 4: Acceptable

A credit supported by the borrower’s adequate financial strength and stability.  Assets and cash flow are reasonably sound and provide for orderly debt reduction.  Access to alternative financing sources will be more difficult to obtain.

Risk Rating 5: Watch

A credit with the characteristics of an acceptable credit which requires, however, more than the normal level of supervision and warrants formal quarterly management reporting.  Credits in this category are not yet criticized or classified, but due to adverse events or aspects of underwriting require closer than normal supervision. Generally, credits should be watch credits in most cases for six months or less as the impact of stress factors are analyzed.

Risk Rating 6: Special Mention

A credit with potential weaknesses that deserves management’s close attention is risk rated a 6.  If left uncorrected, these potential weaknesses will result in deterioration in the capacity to repay debt.  A key distinction between Special Mention and Substandard is that in a Special Mention credit, there are identified weaknesses that pose potential risk(s) to the repayment sources, versus well defined weaknesses that pose risk(s) to the repayment sources.  Assets in this category are expected to be in this category no more than 9-12 months as the potential weaknesses in the credit are resolved.

Risk Rating 7: Substandard

A credit with well defined weaknesses that jeopardize the ability to repay in full is risk rated a 7.  These credits are inadequately protected by either the sound net worth and payment capacity of the borrower or the value of pledged collateral.  These are credits with a distinct possibility of loss.  Loans headed for foreclosure and/or legal action due to deterioration are rated 7 or worse.

Risk Rating 8: Doubtful

A credit with an extremely high probability of loss is risk rated 8.  These credits have all the same critical weaknesses that are found in a substandard loan; however, the weaknesses are elevated to the point that based upon current information, collection or liquidation in full is improbable.  While some loss on doubtful credits is expected, pending events may strengthen a credit making the amount and timing of any loss indeterminable.  In these situations taking the loss is inappropriate until it is clear that the pending event has failed to strengthen the credit and improve the capacity to repay debt.

Risk Rating 9: Loss

A credit that is considered to be currently uncollectible or of such little value that it is no longer a viable bank asset is risk rated 9.  Losses should be taken in the accounting period in which the credit is determined to be uncollectible.  Taking a loss does not mean that a credit has absolutely no recovery or salvage value but, rather, it is not practical or desirable to defer writing off the credit, even though partial recovery may occur in the future.

The following tables present the Company’s portfolio of risk-rated loans and non-risk-rated loans by grade or other characteristics as of March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018
By class:	Pass (Risk Ratings 1-5)(1)		Special Mention		Substandard		Doubtful		Loss		Total Loans
Commercial real estate:
Owner-occupied	$	1,244,007	$	13,686	$	21,121	$	—	$	—	$	1,278,814
Investment properties	1,866,062		—		10,875		—		—		1,876,937
Multifamily real estate	320,533		—		506		—		—		321,039
Commercial construction	163,314		—		—		—		—		163,314
Multifamily construction	159,108		—		—		—		—		159,108
One- to four-family construction	429,172		—		5,032		—		—		434,204
Land and land development:
Residential	156,144		10,321		1,318		—		—		167,783
Commercial	21,507		—		2,824		—		—		24,331
Commercial business	1,228,831		16,599		51,152		109		—		1,296,691
Agricultural business, including secured by farmland	286,925		6,203		14,115		—		—		307,243
One- to four-family residential	827,788		553		5,257		—		—		833,598
Consumer:
Consumer secured by one- to four-family	520,263		—		2,563		—		—		522,826
Consumer—other	169,889		11		258		—		—		170,158
Total	$	7,393,543	$	47,373	$	115,021	$	109	$	—	$	7,556,046

	December 31, 2017
By class:	Pass (Risk Ratings 1-5)(1)		Special Mention		Substandard		Doubtful		Loss		Total Loans
Commercial real estate:
Owner-occupied	$	1,246,125	$	12,227	$	26,011	$	—	$	—	$	1,284,363
Investment properties	1,918,940		9,118		9,365		—		—		1,937,423
Multifamily real estate	313,432		—		756		—		—		314,188
Commercial construction	148,435		—		—		—		—		148,435
Multifamily construction	154,662		—		—		—		—		154,662
One- to four-family construction	411,802		—		3,525		—		—		415,327
Land and land development:
Residential	153,073		10,554		889		—		—		164,516
Commercial	21,665		—		2,918		—		—		24,583
Commercial business	1,213,365		12,135		54,282		112		—		1,279,894
Agricultural business, including secured by farmland	321,110		3,852		13,426		—		—		338,388
One- to four-family residential	842,304		569		5,416		—		—		848,289
Consumer:
Consumer secured by one- to four-family	520,675		—		2,256		—		—		522,931
Consumer—other	165,594		13		278		—		—		165,885
Total	$	7,431,182	$	48,468	$	119,122	$	112	$	—	$	7,598,884

⁽¹⁾   The Pass category includes some performing loans that are part of homogenous pools which are not individually risk-rated.  This includes all consumer loans, all one- to four-family residential loans and, as of March 31, 2018 and December 31, 2017, in the commercial business category, $535.0 million and $296.8 million, respectively, of credit-scored small business loans.  As loans in these pools become non-performing, they are individually risk-rated.

The following tables provide additional detail on the age analysis of the Company’s past due loans as of March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018
	30-59 Days Past Due		60-89 Days Past Due		90 Days or More Past Due		Total Past Due		Purchased Credit-Impaired		Current		Total Loans		Loans 90 Days or More Past Due and Accruing		Non-accrual
Commercial real estate:
Owner-occupied	$	189	$	169	$	3,079	$	3,437	$	6,372	$	1,269,005	$	1,278,814	$	—	$	3,444
Investment properties	1,402		—		1,109		2,511		7,072		1,867,354		1,876,937		—		3,433
Multifamily real estate	—		—		—		—		167		320,872		321,039		—		—
Commercial construction	—		—		—		—		—		163,314		163,314		—		—
Multifamily construction	—		—		—		—		—		159,108		159,108		—		—
One-to-four-family construction	4,323		320		186		4,829		440		428,935		434,204		—		186
Land and land development:
Residential	—		784		798		1,582		—		166,201		167,783		—		798
Commercial	—		—		—		—		2,824		21,507		24,331		—		—
Commercial business	1,744		702		2,137		4,583		1,829		1,290,279		1,296,691		1		3,037
Agricultural business, including secured by farmland	1,580		—		6,507		8,087		415		298,741		307,243		820		6,120
One- to four-family residential	4,467		476		2,501		7,444		129		826,025		833,598		591		2,815
Consumer:
Consumer secured by one- to four-family	1,412		82		584		2,078		—		520,748		522,826		—		1,168
Consumer—other	847		148		35		1,030		68		169,060		170,158		7		69
Total	$	15,964	$	2,681	$	16,936	$	35,581	$	19,316	$	7,501,149	$	7,556,046	$	1,419	$	21,070

	December 31, 2017
	30-59 Days Past Due		60-89 Days Past Due		90 Days or More Past Due		Total Past Due		Purchased Credit-Impaired		Current		Total Loans		Loans 90 Days or More Past Due and Accruing		Non-accrual
Commercial real estate:
Owner-occupied	$	5,323	$	76	$	5,490	$	10,889	$	7,682	$	1,265,792	$	1,284,363	$	—	$	6,447
Investment properties	1,737		—		4,096		5,833		7,166		1,924,424		1,937,423		—		4,199
Multifamily real estate	105		—		—		105		169		313,914		314,188		—		—
Commercial construction	—		—		—		—		—		148,435		148,435		—		—
Multifamily construction	3,416		—		—		3,416		—		151,246		154,662		—		—
One-to-four-family construction	4,892		725		298		5,915		446		408,966		415,327		298		—
Land and land development:
Residential	—		—		798		798		—		163,718		164,516		—		798
Commercial	—		—		—		—		2,919		21,664		24,583		—		—
Commercial business	1,574		404		2,577		4,555		2,159		1,273,180		1,279,894		18		3,406
Agricultural business, including secured by farmland	598		533		2,017		3,148		565		334,675		338,388		—		6,132
One-to four-family residential	4,475		1,241		2,715		8,431		136		839,722		848,289		1,085		3,264
Consumer:
Consumer secured by one- to four-family	1,355		62		713		2,130		—		520,801		522,931		85		1,239
Consumer—other	609		136		15		760		68		165,057		165,885		—		58
Total	$	24,084	$	3,177	$	18,719	$	45,980	$	21,310	$	7,531,594	$	7,598,884	$	1,486	$	25,543

The following tables provide additional information on the allowance for loan losses and loan balances individually and collectively evaluated for impairment at or for the three months ended March 31, 2018 and 2017 (in thousands):

	For the Three Months Ended March 31, 2018
	Commercial Real Estate			Multifamily Real Estate		Construction and Land		Commercial Business			Agricultural Business			One- to Four-Family Residential			Consumer			Unallocated			Total
Allowance for loan losses:
Beginning balance	$	22,824		$	1,633	$	27,568	$	18,311		$	4,053		$	2,055		$	3,866		$	8,718		$	89,028
Provision for loan losses	(715		)	959		1,024		1,923			(1,047		)	1,450			1,913			(3,507		)	2,000
Recoveries	1,352			—		174		170			—			290			112			—			2,098
Charge-offs	—			—		—		(519		)	(7		)	(16		)	(377		)	—			(919		)
Ending balance	$	23,461		$	2,592	$	28,766	$	19,885		$	2,999		$	3,779		$	5,514		$	5,211		$	92,207

	March 31, 2018
	Commercial  Real Estate		Multifamily Real Estate		Construction and Land		Commercial Business		Agricultural Business		One- to Four-Family Residential		Consumer		Unallocated		Total
Allowance for loan losses:
Individually evaluated for impairment	$	284	$	—	$	—	$	39	$	201	$	182	$	11	$	—	$	717
Collectively evaluated for impairment	23,177		2,592		28,766		19,799		2,707		3,597		5,503		5,211		91,352
Purchased credit-impaired loans	—		—		—		47		91		—		—		—		138
Total allowance for loan losses	$	23,461	$	2,592	$	28,766	$	19,885	$	2,999	$	3,779	$	5,514	$	5,211	$	92,207

Loan balances:
Individually evaluated for impairment	$	11,607	$	—	$	750	$	534	$	7,943	$	5,092	$	208	$	—	$	26,134
Collectively evaluated for impairment	3,130,700		320,872		944,726		1,294,328		298,885		828,377		692,708		—		7,510,596
Purchased credit-impaired loans	13,444		167		3,264		1,829		415		129		68		—		19,316
Total loans	$	3,155,751	$	321,039	$	948,740	$	1,296,691	$	307,243	$	833,598	$	692,984	$	—	$	7,556,046

	For the Three Months Ended March 31, 2017
	Commercial  Real Estate			Multifamily Real Estate		Construction and Land			Commercial Business			Agricultural Business			One- to Four-Family Residential			Consumer			Unallocated		Total
Allowance for loan losses:
Beginning balance	$	20,993		$	1,360	$	34,252		$	16,533		$	2,967		$	2,238		$	4,104		$	3,550	$	85,997
Provision for loan losses	(591		)	18		(4,871		)	4,688			324			(409		)	5			2,836		2,000
Recoveries	70			—		83			173			113			145			94			—		678
Charge-offs	—			—		—			(1,626		)	(159		)	—			(363		)	—		(2,148		)
Ending balance	$	20,472		$	1,378	$	29,464		$	19,768		$	3,245		$	1,974		$	3,840		$	6,386	$	86,527

	March 31, 2017
	Commercial Real Estate		Multifamily Real Estate		Construction and Land		Commercial Business		Agricultural Business		One- to Four-Family Residential		Consumer		Unallocated		Total
Allowance for loan losses:
Individually evaluated for impairment	$	419	$	62	$	323	$	62	$	238	$	229	$	11	$	—	$	1,344
Collectively evaluated for impairment	20,053		1,316		29,122		19,706		3,007		1,745		3,829		6,386		85,164
Purchased credit-impaired loans	—		—		19		—		—		—		—		—		19
Total allowance for loan losses	$	20,472	$	1,378	$	29,464	$	19,768	$	3,245	$	1,974	$	3,840	$	6,386	$	86,527

Loan balances:
Individually evaluated for impairment	$	9,506	$	347	$	4,006	$	2,710	$	3,815	$	6,653	$	220	$	—	$	27,257
Collectively evaluated for  impairment	3,341,177		253,725		795,887		1,218,415		308,834		796,026		649,433		—		7,363,497
Purchased credit impaired loans	22,030		174		3,777		3,416		725		312		67		—		30,501
Total loans	$	3,372,713	$	254,246	$	803,670	$	1,224,541	$	313,374	$	802,991	$	649,720	$	—	$	7,421,255

XML

REAL ESTATE OWNED, NET

3 Months Ended

Mar. 31, 2018

Real Estate [Abstract]

REAL ESTATE OWNED, NET

REAL ESTATE OWNED, NET

The following table presents the changes in REO for the three months ended March 31, 2018 and 2017 (in thousands):

	Three Months Ended March 31,
	2018			2017
Balance, beginning of the period	$	360		$	11,081
Additions from loan foreclosures	128			—
Proceeds from dispositions of REO	—			(9,193		)
Gain on sale of REO	—			1,202
Valuation adjustments in the period	(160		)	(50		)
Balance, end of the period	$	328		$	3,040

REO properties are recorded at the estimated fair value of the property, less expected selling costs, establishing a new cost basis.  Subsequently, REO properties are carried at the lower of the new cost basis or updated fair market values, based on updated appraisals of the underlying properties, as received.  Valuation allowances on the carrying value of REO may be recognized based on updated appraisals or on management’s authorization to reduce the selling price of a property. At March 31, 2018 and December 31, 2017, the Company had $98,000 and $0, respectively, of foreclosed one- to four-family residential real estate properties held as REO. The recorded investment in one- to four-family residential loans in the process of foreclosure was $1.6 million at March 31, 2018 compared with $2.0 million at December 31, 2017.

XML

GOODWILL, OTHER INTANGIBLE ASSETS AND MORTGAGE SERVICING RIGHTS

3 Months Ended

Mar. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

GOODWILL, OTHER INTANGIBLE ASSETS AND MORTGAGE SERVICING RIGHTS

GOODWILL, OTHER INTANGIBLE ASSETS AND MORTGAGE SERVICING RIGHTS

Goodwill and Other Intangible Assets:  At March 31, 2018, intangible assets are comprised of goodwill, CDI, and favorable leasehold intangibles (LHI) acquired in business combinations. Goodwill represents the excess of the purchase considerations paid over the fair value of the assets acquired, net of the fair values of liabilities assumed in a business combination, and is not amortized but is reviewed annually for impairment. At December 31, 2017, the Company completed its qualitative assessment of goodwill and concluded that it is more likely than not that the fair value of Banner, the reporting unit, exceeds the carrying value.

CDI represents the value of transaction-related deposits and the value of the customer relationships associated with the deposits. LHI represents the value ascribed to leases assumed in an acquisition in which the lease terms are favorable compared to a market lease at the date of acquisition. The Company amortizes CDI and LHI over their estimated useful lives and reviews them at least annually for events or circumstances that could impair their value. 

The following table summarizes the changes in the Company’s goodwill and other intangibles for the three months ended March 31, 2018 and the year ended December 31, 2017 (in thousands):

	Goodwill			CDI			LHI			Total
Balance, December 31, 2016	$	244,583		$	29,701		$	461		$	274,745
Amortization	—			(6,247		)	(184		)	(6,431		)
Other changes(1)	(1,924		)	(1,076		)	—			(3,000		)
Balance, December 31, 2017	242,659			22,378			277			265,314
Amortization	—			(1,382		)	(22		)	(1,404		)
Balance, March 31, 2018	$	242,659		$	20,996		$	255		$	263,910

⁽¹⁾ Acquired goodwill and CDI were adjusted for the sale of the Utah branches in 2017.

The following table presents the estimated amortization expense with respect to CDI for the periods indicated (in thousands):

	Estimated Amortization
Remainder of 2018	$	3,990
2019	4,683
2020	3,996
2021	3,307
2022	2,524
Thereafter	2,496
	$	20,996

Mortgage Servicing Rights:  Mortgage servicing rights are reported in other assets. Mortgage servicing rights are initially recorded at fair value and are amortized in proportion to, and over the period of, the estimated future net servicing income of the underlying financial assets.  Mortgage servicing rights are subsequently evaluated for impairment based upon the fair value of the rights compared to the amortized cost (remaining unamortized initial fair value).  If the fair value is less than the amortized cost, a valuation allowance is created through an impairment charge, which is recognized in servicing fee income within mortgage banking operations on the consolidated statement of operations.   However, if the fair value is greater than the amortized cost, the amount above the amortized cost is not recognized in the carrying value.  During the three months ended March 31, 2018 and 2017, the Company did not record any impairment charges or recoveries against mortgage servicing rights. The unpaid principal balance for loans which mortgage servicing rights have been recorded totaled $2.23 billion and $2.19 billion at March 31, 2018 and December 31, 2017, respectively.  Custodial accounts maintained in connection with this servicing totaled $19.1 million and $10.2 million at March 31, 2018 and December 31, 2017, respectively.

An analysis of our mortgage servicing rights for the three months ended March 31, 2018 and 2017 is presented below (in thousands):

	Three Months Ended March 31,
	2018			2017
Balance, beginning of the period	$	14,738		$	15,249
Additions—amounts capitalized	821			945
Additions—through purchase	15			—
Amortization (1)	(957		)	(922		)
Balance, end of the period (2)	$	14,617		$	15,272

⁽¹⁾  Amortization of mortgage servicing rights is recorded as a reduction of loan servicing income within mortgage banking operations and any unamortized balance is fully amortized if the loan repays in full.

⁽²⁾  There was no valuation allowance as of March 31, 2018 and 2017.

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DEPOSITS

3 Months Ended

Mar. 31, 2018

Banking and Thrift [Abstract]

DEPOSITS

DEPOSITS

Deposits consisted of the following at March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018		December 31, 2017
Non-interest-bearing accounts	$	3,383,439	$	3,265,544
Interest-bearing checking	1,043,840		971,137
Regular savings accounts	1,637,814		1,557,500
Money market accounts	1,459,614		1,422,313
Total interest-bearing transaction and saving accounts	4,141,268		3,950,950
Certificates of deposit:
Certificates of deposit less than or equal to $250,000	865,353		813,997
Certificates of deposit greater than $250,000	153,002		152,940
Total certificates of deposit(1)	1,018,355		966,937
Total deposits	$	8,543,062	$	8,183,431
Included in total deposits:
Public fund transaction and savings accounts	$	190,311	$	198,719
Public fund interest-bearing certificates	24,928		23,685
Total public deposits	$	215,239	$	222,404
Total brokered deposits	$	169,523	$	57,228

⁽¹⁾ Certificates of deposit include $5,000 and $11,000 of acquisition premiums at March 31, 2018 and December 31, 2017, respectively.

At March 31, 2018 and December 31, 2017, the Company had certificates of deposit of $156.3 million and $155.9 million, respectively, that were equal to or greater than $250,000.

Scheduled maturities and weighted average interest rates of certificate accounts at March 31, 2018 are as follows (dollars in thousands):

	March 31, 2018
	Amount		Weighted Average Rate
Maturing in one year or less	$	703,650	0.63	%
Maturing after one year through two years	146,484		0.98
Maturing after two years through three years	128,810		1.31
Maturing after three years through four years	23,571		1.11
Maturing after four years through five years	13,460		1.33
Maturing after five years	2,380		1.06
Total certificates of deposit	$	1,018,355	0.79	%

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FAIR VALUE OF FINANCIAL INSTRUMENTS

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

FAIR VALUE ACCOUNTING AND MEASUREMENT

FAIR VALUE OF FINANCIAL INSTRUMENTS

The following table presents estimated fair values of the Company’s financial instruments as of March 31, 2018 and December 31, 2017, whether or not measured at fair value in the Consolidated Statements of Financial Condition (in thousands):

		March 31, 2018				December 31, 2017
	Level	Carrying Value		Estimated Fair Value		Carrying Value		Estimated Fair Value
Assets:
Cash and cash equivalents	1	$	242,048	$	242,048	$	261,200	$	261,200
Securities—trading	2,3	25,574		25,574		22,318		22,318
Securities—available-for-sale	2	1,406,505		1,406,505		919,485		919,485
Securities—held-to-maturity	2	259,204		257,477		256,793		258,710
Securities—held-to-maturity	3	3,441		3,441		3,478		3,478
Loans held for sale	2	141,808		141,898		40,725		40,923
Loans receivable	3	7,556,046		7,462,004		7,598,884		7,445,990
FHLB stock	3	18,036		18,036		10,334		10,334
Bank-owned life insurance	1	163,519		163,519		162,668		162,668
Mortgage servicing rights	3	14,617		20,560		14,738		19,835
Equity securities	1	5,698		5,698		—		—
Derivatives:
Interest rate swaps	2	4,592		4,592		5,083		5,083
Interest rate lock and forward sales commitments	2	683		683		523		523
Liabilities:
Demand, interest checking and money market accounts	2	5,886,893		5,886,893		5,658,994		5,658,994
Regular savings	2	1,637,814		1,637,814		1,557,500		1,557,500
Certificates of deposit	2	1,018,355		994,616		966,937		947,517
FHLB advances	2	192,195		192,195		202		202
Other borrowings	2	101,844		101,844		95,860		95,860
Junior subordinated debentures	3	112,516		112,516		98,707		98,707
Derivatives:
Interest rate swaps	2	4,592		4,592		5,083		5,083
Interest rate lock and forward sales commitments	2	260		260		201		201

The Company measures and discloses certain assets and liabilities at fair value. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (that is, not a forced liquidation or distressed sale). GAAP establishes a consistent framework for measuring fair value and disclosure requirements about fair value measurements. Among other things, the accounting standard requires the reporting entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect the Company’s estimates for market assumptions. These two types of inputs create the following fair value hierarchy:

• Level 1 – Quoted prices in active markets for identical instruments. An active market is a market in which transactions occur with sufficient frequency and volume to provide pricing information on an ongoing basis. A quoted price in an active market provides the most reliable evidence of fair value and shall be used to measure fair value whenever available.

• Level 2 – Observable inputs other than Level 1 including quoted prices in active markets for similar instruments, quoted prices in less active markets for identical or similar instruments, or other observable inputs that can be corroborated by observable market data.

• Level 3 – Unobservable inputs supported by little or no market activity for financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation; also includes observable inputs from non-binding single dealer quotes not corroborated by observable market data.

The estimated fair value amounts of financial instruments have been determined by the Company using available market information and appropriate valuation methodologies. However, considerable judgment is required to interpret data to develop the estimates of fair value. Accordingly, the estimates presented herein are not necessarily indicative of the amounts the Company could realize at a future date. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts. In addition, reasonable comparability between financial institutions may not be likely due to the wide range of permitted valuation techniques and numerous estimates that must be made given the absence of active secondary markets for certain financial instruments. This lack of uniform valuation methodologies also introduces a greater degree of subjectivity to these estimated fair values. Transfers between levels of the fair value hierarchy are deemed to occur at the end of the reporting period.

Items Measured at Fair Value on a Recurring Basis:

The following tables present financial assets and liabilities measured at fair value on a recurring basis and the level within the fair value hierarchy of the fair value measurements for those assets and liabilities as of March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018
	Level 1		Level 2		Level 3		Total
Assets:
Securities—trading
Municipal bonds	$	—	$	100	$	—	$	100
Corporate bonds (Trust Preferred Securities)	—		—		25,474		25,474
	—		100		25,474		25,574
Securities—available-for-sale
U.S. Government and agency obligations	—		143,306		—		143,306
Municipal bonds	—		68,958		—		68,958
Corporate bonds	—		6,112		—		6,112
Mortgage-backed or related securities	—		1,160,413		—		1,160,413
Asset-backed securities	—		27,716		—		27,716
	—		1,406,505		—		1,406,505
Loans held for sale	—		137,734		—		137,734
Equity securities	—		5,698		—		5,698
Derivatives
Interest rate swaps	—		4,592		—		4,592
Interest rate lock and forward sales commitments	—		683		—		683
	$	—	$	1,555,312	$	25,474	$	1,580,786
Liabilities:
Junior subordinated debentures, net of unamortized deferred issuance costs	$	—	$	—	$	112,516	$	112,516
Derivatives
Interest rate swaps	—		4,592		—		4,592
Interest rate lock and forward sales commitments	—		260		—		260
	$	—	$	4,852	$	112,516	$	117,368

	December 31, 2017
	Level 1		Level 2		Level 3		Total
Assets:
Securities—trading
Municipal bonds	$	—	$	100	$	—	$	100
Corporate Bonds (Trust Preferred Securities)	—		—		22,058		22,058
Equity securities	—		160		—		160
	—		260		22,058		22,318
Securities—available-for-sale
U.S. Government and agency obligations	—		72,466		—		72,466
Municipal bonds	—		68,733		—		68,733
Corporate bonds	—		5,393		—		5,393
Mortgage-backed securities	—		739,557		—		739,557
Asset-backed securities	—		27,758		—		27,758
Equity securities	—		5,578		—		5,578
	—		919,485		—		919,485
Loans held for sale	—		32,392		—		32,392
Derivatives
Interest rate swaps	—		5,083		—		5,083
Interest rate lock and forward sales commitments	—		523		—		523
	$	—	$	957,743	$	22,058	$	979,801
Liabilities:
Junior subordinated debentures, net of unamortized deferred issuance costs	$	—	$	—	$	98,707	$	98,707
Derivatives
Interest rate swaps	—		5,083		—		5,083
Interest rate lock and forward sales commitments	—		201		—		201
	$	—	$	5,284	$	98,707	$	103,991

The following methods were used to estimate the fair value of each class of financial instruments above:

Securities:  The estimated fair values of investment securities and mortgaged-backed securities are priced using current active market quotes, if available, which are considered Level 1 measurements.  For most of the portfolio, matrix pricing based on the securities’ relationship to other benchmark quoted prices is used to establish the fair value.  These measurements are considered Level 2.  Due to the continued limited activity in the trust preferred markets that have limited the observability of market spreads for some of the Company’s Trust Preferred Securities (TPS) securities, management has classified these securities as a Level 3 fair value measure. Management periodically reviews the pricing information received from third-party pricing services and tests those prices against other sources to validate the reported fair values.

Loans Held for Sale: Fair values for residential mortgage loans held for sale are determined by comparing actual loan rates to current secondary market prices for similar loans. Fair values for multifamily loans held for sale are calculated based on discounted cash flows using as a discount rate a combination of market spreads for similar loan types added to selected index rates.

Mortgage Servicing Rights: Fair values are estimated based on an independent dealer analysis of discounted cash flows.  The evaluation utilizes assumptions market participants would use in determining fair value including prepayment speeds, delinquency and foreclosure rates, the discount rate, servicing costs, and the timing of cash flows.  The mortgage servicing portfolio is stratified by loan type and fair value estimates are adjusted up or down based on the serviced loan interest rates versus current rates on new loan originations since the most recent independent analysis.

Junior Subordinated Debentures:  The fair value of junior subordinated debentures is estimated using a discounted cash flow approach. The significant inputs included in the estimation of fair value are the credit risk adjusted spread and three month LIBOR. The credit risk adjusted spread represents the nonperformance risk of the liability. The Company utilizes an external valuation firm to assist management in validating the reasonableness of the credit risk adjusted spread used to determine the fair value. The junior subordinated debentures are carried at fair value which represents the estimated amount that would be paid to transfer these liabilities in an orderly transaction amongst market participants. Due to credit concerns in the capital markets and inactivity in the trust preferred markets that have limited the observability of market spreads, management has classified this as a Level 3 fair value measure.

Derivatives: Derivatives include interest rate swap agreements, interest rate lock commitments to originate loans held for sale and forward sales contracts to sell loans and securities related to mortgage banking activities. Fair values for these instruments, which generally change as a result of changes in the level of market interest rates, are estimated based on dealer quotes and secondary market sources.

Off-Balance-Sheet Items: Off-balance-sheet financial instruments include unfunded commitments to extend credit, including standby letters of credit, and commitments to purchase investment securities. The fair value of these instruments is not considered to be material.

Limitations: The fair value estimates presented herein are based on pertinent information available to management as of March 31, 2018 and December 31, 2017.  The factors used in the fair values estimates are subject to change subsequent to the dates the fair value estimates are completed, therefore, current estimates of fair value may differ significantly from the amounts presented herein.

Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs (Level 3):

The following table provides a description of the valuation technique, unobservable inputs, and qualitative information about the unobservable inputs for certain of the Company's assets and liabilities classified as Level 3 and measured at fair value on a recurring and non-recurring basis at March 31, 2018 and December 31, 2017:

			Weighted Average Rate / Range
Financial Instruments	Valuation Techniques	Unobservable Inputs	March 31, 2018		December 31, 2017
Corporate Bonds (TPS securities)	Discounted cash flows	Discount rate	6.31	%	6.69	%
Junior subordinated debentures	Discounted cash flows	Discount rate	6.31	%	6.69	%
Impaired loans	Collateral Valuations	Discount to appraised value	8.5	%	8.5% to 20.0%
REO	Appraisals	Discount to appraised value	61	%	42	%

TPS securities : Management believes that the credit risk-adjusted spread used to develop the discount rate utilized in the fair value measurement of TPS securities is indicative of the risk premium a willing market participant would require under current market conditions for instruments with similar contractual rates and terms and conditions and issuers with similar credit risk profiles and with similar expected probability of default. Management attributes the change in fair value of these instruments, compared to their par value, primarily to perceived general market adjustments to the risk premiums for these types of assets subsequent to their issuance.

Junior subordinated debentures: Similar to the TPS securities discussed above, management believes that the credit risk-adjusted spread utilized in the fair value measurement of the junior subordinated debentures is indicative of the risk premium a willing market participant would require under current market conditions for an issuer with Banner's credit risk profile. Management attributes the change in fair value of the junior subordinated debentures, compared to their par value, primarily to perceived general market adjustments to the risk premiums for these types of liabilities subsequent to their issuance. Future contractions in the risk adjusted spread relative to the spread currently utilized to measure the Company's junior subordinated debentures at fair value as of March 31, 2018, or the passage of time, will result in negative fair value adjustments. At March 31, 2018, the discount rate utilized was based on a credit spread of 400 basis points and three-month LIBOR of 231 basis points.

The following tables provide a reconciliation of the assets and liabilities measured at fair value using significant unobservable inputs (Level 3) on a recurring basis during the three months ended March 31, 2018 and 2017 (in thousands):

	Three Months Ended
	March 31, 2018
	Level 3 Fair Value Inputs
	TPS Securities		Borrowings—Junior Subordinated Debentures
Beginning balance	$	22,058	$	98,707
Total gains or losses recognized
Assets gains	3,416		—
Liabilities losses(1)	—		13,809
Ending balance at March 31, 2018	$	25,474	$	112,516
	Three Months Ended
	March 31, 2017
	Level 3 Fair Value Inputs
	TPS Securities		Borrowings—Junior Subordinated Debentures
Beginning balance	$	21,143	$	95,200
Total gains or losses recognized
Assets gains	218		—
Liabilities losses	—		840
Ending balance at March 31, 2017	$	21,361	$	96,040

⁽¹⁾ The change in fair value on the junior subordinated debentures in 2018 was recorded in other comprehensive income (loss).

The Company has elected to continue to recognize the interest income and dividends from the securities reclassified to fair value from available-for-sale as a component of interest income as was done in prior years when they were classified as available-for-sale.  Interest expense related to the junior subordinated debentures continues to be measured based on contractual interest rates and reported in interest expense.  The change in fair market value on TPS securities and on junior subordinated debentures prior to 2018 has been recorded as a component of non-interest income. Beginning in 2018, the change in fair value of the junior subordinated debentures, which represent changes in instrument specific credit risk, are recorded in other comprehensive income (loss).

Items Measured at Fair Value on a Non-recurring Basis:

The following tables present financial assets measured at fair value on a non-recurring basis and the level within the fair value hierarchy of the fair value measurements for those assets as of March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018
	Level 1		Level 2		Level 3		Total
Impaired loans	$	—	$	—	$	500	$	500
REO	—		—		328		328
	December 31, 2017
	Level 1		Level 2		Level 3		Total
Impaired loans	$	—	$	—	$	6,535	$	6,535
REO	—		—		360		360

The following table presents the losses resulting from non-recurring fair value adjustments for the three months ended March 31, 2018 and 2017 (in thousands):

	Three months ended March 31,
	2018			2017
REO	$	(160	)	$	(50	)
Total loss from non-recurring measurements	$	(160	)	$	(50	)

Impaired loans: Impaired loans are measured based on the present value of expected future cash flows discounted at the loan's effective interest rate or, as a practical expedient, at the loan's observable market price or the fair value of collateral if the loan is collateral dependent. If this practical expedient is used, the impaired loans are considered to be held at fair value. Subsequent changes in the value of impaired loans are included within the provision for loan losses in the same manner in which impairment initially was recognized or as a reduction in the provision that would otherwise be reported. Impaired loans are periodically evaluated to determine if valuation adjustments, or partial write-downs, should be recorded. The need for valuation adjustments arises when observable market prices or current appraised values of collateral indicate a shortfall in collateral value compared to current carrying values of the related loan. If the Company determines that the value of the impaired loan is less than the carrying value of the loan, the Company either establishes an impairment reserve as a specific component of the allowance for loan losses or charges off the impaired amount. These valuation adjustments are considered non-recurring fair value adjustments. The remaining impaired loans are evaluated for reserve needs in homogenous pools within the Company’s methodology for assessing the adequacy of the allowance for loan losses.

REO: The Company records REO (acquired through a lending relationship) at fair value on a non-recurring basis. Fair value adjustments on REO are based on updated real estate appraisals which are based on current market conditions. All REO properties are recorded at the lower of the estimated fair value of the real estate, less expected selling costs, or the carrying amount of the defaulted loans. From time to time, non-recurring fair value adjustments to REO are recorded to reflect partial write-downs based on an observable market price or current appraised value of property. Banner considers any valuation inputs related to REO to be Level 3 inputs. The individual carrying values of these assets are reviewed for impairment at least annually and any additional impairment charges are expensed to operations.

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INCOME TAXES AND DEFERRED TAXES

3 Months Ended

Mar. 31, 2018

Income Tax Disclosure [Abstract]

INCOME TAXES AND DEFERRED TAXES

INCOME TAXES AND DEFERRED TAXES

The Company files a consolidated income tax return including all of its wholly-owned subsidiaries on a calendar year basis. Income taxes are accounted for using the asset and liability method. Under this method, a deferred tax asset or liability is determined based on the enacted tax rates which will be in effect when the differences between the financial statement carrying amounts and tax basis of existing assets and liabilities are expected to be reported in the Company’s income tax returns. The effect on deferred taxes of a change in tax rates is recognized in income in the period of change. A valuation allowance is recognized as a reduction to deferred tax assets when management determines it is more likely than not that deferred tax assets will not be available to offset future income tax liabilities.

Accounting standards for income taxes prescribe a recognition threshold and measurement process for financial statement recognition and measurement of uncertain tax positions taken or expected to be taken in a tax return, and also provide guidance on the de-recognition of previously recorded benefits and their classification, as well as the proper recording of interest and penalties, accounting in interim periods, disclosures and transition. The Company periodically reviews its income tax positions based on tax laws and regulations and financial reporting considerations, and records adjustments as appropriate. This review takes into consideration the status of current taxing authorities’ examinations of the Company’s tax returns, recent positions taken by the taxing authorities on similar transactions, if any, and the overall tax environment.

As of March 31, 2018, the Company had an insignificant amount of unrecognized tax benefits for uncertain tax positions, none of which would materially affect the effective tax rate if recognized. The Company does not anticipate that the amount of unrecognized tax benefits will significantly increase or decrease in the next twelve months. The Company’s policy is to recognize interest and penalties on unrecognized tax benefits in the income tax expense. The Company files consolidated income tax returns in the U.S. federal jurisdiction and in the Oregon, California, Utah and Idaho state jurisdictions.

In December 2017, the federal government enacted the Tax Cuts and Jobs Act (2017 Tax Act), which among other provisions, reduced the federal marginal corporate income tax rate from 35% to 21%. As a result of the passage of the 2017 Tax Act, the Company recorded a $42.6 million charge in December 2017, for the revaluation of its net deferred tax to account for the future impact of the decrease in the corporate income tax rate and other provisions of the legislation. The charge was recorded as an increase to tax expense and reduction of the net deferred asset. The Company’s 2017 financial results reflected the income tax effects of the 2017 Tax Act for which the accounting was complete and provisional amounts for those specific income tax effects of the 2017 Tax Act for which the accounting is incomplete but a reasonable estimate could be determined. As a result, these amounts could be adjusted during the measurement period, which will end in December 2018.  The Company did not identify any items for which the income tax effects of the 2017 Tax Act have not been completed and a reasonable estimate could not be determined as of December 31, 2017. The $42.6 million charge recorded by the Company includes $4.2 million of provisional income tax expense related to Alternative Minimum Tax (AMT) credits that are limited under Internal Revenue Code of 1986 Section 383, which resulted in a reduction in the AMT deferred tax asset.  The utilization of the limited AMT credits under the refundable AMT credit law is uncertain and will require further analysis as guidance is released during 2018. No adjustment to the provisional amounts was recorded during the quarter ended March 31, 2018.

Tax credit investments: The Company invests in low income housing tax credit funds that are designed to generate a return primarily through the realization of federal tax credits. The Company accounts for these investments by amortizing the cost of tax credit investments over the life of the investment using a proportional amortization method and tax credit investment amortization expense is a component of the provision for income taxes.

The following table presents the balances of the Company’s tax credit investments and related unfunded commitments at March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018		December 31, 2017
Tax credit investments	$	9,223	$	7,311
Unfunded commitments—tax credit investments	5,483		4,417

The following table presents other information related to the Company's tax credit investments for the three months ended March 31, 2018 and 2017 (in thousands):

	Three Months Ended March 31,
	2018		2017
Tax credits and other tax benefits recognized	$	364	$	285
Tax credit amortization expense included in provision for income taxes	288		199

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CALCULATION OF WEIGHTED AVERAGE SHARES OUTSTANDING FOR EARNINGS PER SHARE (EPS)

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

CALCULATION OF WEIGHTED AVERAGE SHARES OUTSTANDING FOR EARNINGS PER SHARE (EPS)

CALCULATION OF WEIGHTED AVERAGE SHARES OUTSTANDING FOR EARNINGS PER SHARE (EPS)

The following table reconciles basic to diluted weighted shares outstanding used to calculate earnings per share data (in thousands, except shares and per share data):

	Three Months Ended March 31,
	2018		2017
Net income	$	28,790	$	23,793
Basic weighted average shares outstanding	32,397,568		32,933,444
Plus unvested restricted stock	118,888		118,015
Diluted weighted shares outstanding	32,516,456		33,051,459
Earnings per common share
Basic	$	0.89	$	0.72
Diluted	$	0.89	$	0.72

As of March 31, 2018, warrants expiring on November 21, 2018 to purchase up to $18.6 million (243,998 shares, post reverse-split) of common stock were not included in the computation of diluted earnings per share because the exercise price of the warrants was greater than the average market price of common shares.

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STOCK-BASED COMPENSATION PLANS

3 Months Ended

Mar. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

STOCK-BASED COMPENSATION PLANS AND STOCK OPTIONS

STOCK-BASED COMPENSATION PLANS

The Company operates the following stock-based compensation plans as approved by its shareholders:

• 2012 Restricted Stock and Incentive Bonus Plan (2012 Restricted Stock Plan).

• 2014 Omnibus Incentive Plan (the 2014 Plan).

The purpose of these plans is to promote the success and enhance the value of the Company by providing a means for attracting and retaining highly skilled employees, officers and directors of Banner Corporation and its affiliates and linking their personal interests with those of the Company's shareholders. Under these plans the Company currently has outstanding restricted stock share grants and restricted stock unit grants.

2012 Restricted Stock and Incentive Bonus Plan

Under the 2012 Restricted Stock Plan, which was initially approved on April 24, 2012, the Company is authorized to issue up to 300,000 shares of its common stock to provide a means for attracting and retaining highly skilled officers of Banner Corporation and its affiliates. Shares granted under the 2012 Restricted Stock Plan have a minimum vesting period of three years. The 2012 Restricted Stock Plan will continue in effect for a term of ten years, after which no further awards may be granted.

The 2012 Restricted Stock Plan was amended on April 23, 2013 to provide for the ability to grant (1) cash-denominated incentive-based awards payable in cash or common stock, including those that are eligible to qualify as qualified performance-based compensation for the purposes of Section 162(m) of the Code and (2) restricted stock awards that qualify as qualified performance-based compensation for the purposes of Section 162(m) of the Code. Vesting requirements may include time-based conditions, performance-based conditions, or market-based conditions.

As of March 31, 2018, the Company had granted 270,467 shares of restricted stock from the 2012 Restricted Stock Plan (as amended and restated), of which 253,865 shares had vested and 16,602 shares remain unvested.

2014 Omnibus Incentive Plan

The 2014 Plan was approved by shareholders on April 22, 2014. The 2014 Plan provides for the grant of incentive stock options, non-qualified stock options, stock appreciation rights, restricted stock, restricted stock units, performance shares, performance units, other stock-based awards and other cash awards, and provides for vesting requirements which may include time-based or performance-based conditions. The Company reserved 900,000 shares of its common stock for issuance under the 2014 Plan in connection with the exercise of awards. As of March 31, 2018, 346,914 restricted stock shares and 34,975 restricted stock units have been granted under the 2014 Plan of which 123,885 restricted stock shares and 26,154 restricted stock units have vested.

The expense associated with all restricted stock grants (including restricted stock shares and restricted stock units) was $1.3 million and $1.1 million for the three-month periods ended March 31, 2018 and March 31, 2017, respectively. Unrecognized compensation expense for these awards as of March 31, 2018 was $6.6 million and will be amortized over the next 28 months.

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COMMITMENTS AND CONTINGENCIES

3 Months Ended

Mar. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES

Lease Commitments — The Company leases 107 buildings and offices under non-cancelable operating leases. The leases contain various provisions for increases in rental rates, based either on changes in the published Consumer Price Index or a predetermined escalation schedule. Substantially all of the leases provide the Company with the option to extend the lease term one or more times following expiration of the initial term.

Financial Instruments with Off-Balance-Sheet Risk — The Company has financial instruments with off-balance-sheet risk generated in the normal course of business to meet the financing needs of our customers.  These financial instruments include commitments to extend credit, commitments related to standby letters of credit, commitments to originate loans, commitments to sell loans, commitments to buy and sell securities.  These instruments involve, to varying degrees, elements of credit and interest rate risk similar to the risk involved in on-balance-sheet items recognized in our Consolidated Statements of Financial Condition.

Our exposure to credit loss in the event of nonperformance by the other party to the financial instrument from commitments to extend credit and standby letters of credit is represented by the contractual notional amount of those instruments.  We use the same credit policies in making commitments and conditional obligations as for on-balance-sheet instruments.

Outstanding commitments for which no asset or liability for the notional amount has been recorded consisted of the following at the dates indicated (in thousands):

	Contract or Notional Amount
	March 31, 2018		December 31, 2017
Commitments to extend credit	$	2,386,614	$	2,300,593
Standby letters of credit and financial guarantees	13,958		14,579
Commitments to originate loans	66,479		56,030
Risk participation agreement	4,141		11,451
Derivatives also included in Note 13:
Commitments to originate loans held for sale	47,848		43,502
Commitments to sell loans secured by one- to four-family residential properties	38,409		33,069
Commitments to sell securities related to mortgage banking activities	107,500		57,000

Commitments to extend credit are agreements to lend to a customer, as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Many of the commitments may expire without being drawn upon; therefore, the total commitment amounts do not necessarily represent future cash requirements. Each customer’s creditworthiness is evaluated on a case-by-case basis.  The amount of collateral obtained, if deemed necessary upon extension of credit, is based on management’s credit evaluation of the customer. The type of collateral held varies, but may include accounts receivable, inventory, property, plant and equipment, and income producing commercial properties. The Company's reserve for unfunded loan commitments was $2.4 million and $2.4 million at March 31, 2018 and December 31, 2017, respectively.

Standby letters of credit are conditional commitments issued to guarantee a customer’s performance or payment to a third party.  The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. Through the acquisition of AmericanWest, Banner Bank assumed a risk participation agreement. Under the risk participation agreement, Banner Bank guarantees the financial performance of a borrower on the participated portion of an interest rate swap on a loan.

Interest rates on residential one- to four-family mortgage loan applications are typically rate locked (committed) to customers during the application stage for periods ranging from 30 to 60 days, the most typical period being 45 days. Traditionally, these loan applications with rate lock commitments had the pricing for the sale of these loans locked with various qualified investors under a best-efforts delivery program at or near the time the interest rate is locked with the customer. The Bank then attempts to deliver these loans before their rate locks expired. This arrangement generally required delivery of the loans prior to the expiration of the rate lock. Delays in funding the loans required a lock extension. The cost of a lock extension at times was borne by the customer and at times by the Bank. These lock extension costs have not had a material impact to our operations. The Company enters into forward commitments at specific prices and settlement dates to deliver either: (1) residential mortgage loans for purchase by secondary market investors (i.e., Freddie Mac or Fannie Mae), or (2) mortgage-backed securities to broker/dealers. The purpose of these forward commitments is to offset the movement in interest rates between the execution of its residential mortgage rate lock commitments with borrowers and the sale of those loans to the secondary market investor. There were nocounterparty default losses on forward contracts during the three months ended March 31, 2018 or March 31, 2017. Market risk with respect to forward contracts arises principally from changes in the value of contractual positions due to changes in interest rates. The Company limits its exposure to market risk by monitoring differences between commitments to customers and forward contracts with market investors and securities broker/dealers. In the event the Company has forward delivery contract commitments in excess of available mortgage loans, the transaction is completed by either paying or receiving a fee to or from the investor or broker/dealer equal to the increase or decrease in the market value of the forward contract.

In the normal course of business, the Company and/or its subsidiaries have various legal proceedings and other contingent matters outstanding.  These proceedings and the associated legal claims are often contested and the outcome of individual matters is not always predictable.  These claims and counter-claims typically arise during the course of collection efforts on problem loans or with respect to action to enforce liens on properties in which the Banks hold a security interest.  Based upon the information known to management at this time, the Company and the Banks are not a party to any legal proceedings that management believes would have a material adverse effect on the results of operations or consolidated financial position at March 31, 2018.

In connection with certain asset sales, the Banks typically make representations and warranties about the underlying assets conforming to specified guidelines.  If the underlying assets do not conform to the specifications, the Bank may have an obligation to repurchase the assets or indemnify the purchaser against any loss.  The Banks believe that the potential for material loss under these arrangements is remote.  Accordingly, the fair value of such obligations is not material.

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DERIVATIVES AND HEDGING

3 Months Ended

Mar. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

DERIVATIVES AND HEDGING

DERIVATIVES AND HEDGING

The Company, through its Banner Bank subsidiary, is party to various derivative instruments that are used for asset and liability management and customer financing needs. Derivative instruments are contracts between two or more parties that have a notional amount and an underlying variable, require no net investment and allow for the net settlement of positions. The notional amount serves as the basis for the payment provision of the contract and takes the form of units, such as shares or dollars. The underlying variable represents a specified interest rate, index, or other component. The interaction between the notional amount and the underlying variable determines the number of units to be exchanged between the parties and influences the market value of the derivative contract. The Company obtains dealer quotations to value its derivative contracts.

The Company's predominant derivative and hedging activities involve interest rate swaps related to certain term loans and forward sales contracts associated with mortgage banking activities. Generally, these instruments help the Company manage exposure to market risk and meet customer financing needs. Market risk represents the possibility that economic value or net interest income will be adversely affected by fluctuations in external factors such as market-driven interest rates and prices or other economic factors.

Derivatives Designated in Hedge Relationships

The Company's fixed rate loans result in exposure to losses in value or net interest income as interest rates change. The risk management objective for hedging fixed rate loans is to effectively convert the fixed rate received to a floating rate. The Company has hedged exposure to changes in the fair value of certain fixed rate loans through the use of interest rate swaps. For a qualifying fair value hedge, changes in the value of the derivatives are recognized in current period earnings along with the corresponding changes in the fair value of the designated hedged item attributable to the risk being hedged.

Under a prior program, customers received fixed interest rate commercial loans and the Banner Bank subsequently hedged that fixed rate loan by entering into an interest rate swap with a dealer counterparty. Banner Bank receives fixed rate payments from the customers on the loans and makes similar fixed rate payments to the dealer counterparty on the swaps in exchange for variable rate payments based on the one-month LIBOR index. Some of these interest rate swaps are designated as fair value hedges. Through application of the “short cut method of accounting,” there is an assumption that the hedges are effective. Banner Bank discontinued originating interest rate swaps under this program in 2008.

As of March 31, 2018 and December 31, 2017, the notional values or contractual amounts and fair values of the Company's derivatives designated in hedge relationships were as follows (in thousands):

	Asset Derivatives								Liability Derivatives
	March 31, 2018				December 31, 2017				March 31, 2018				December 31, 2017
	Notional/ Contract Amount		Fair    Value (1)		Notional/ Contract Amount		Fair    Value (1)		Notional/ Contract Amount		Fair    Value (2)		Notional/ Contract Amount		Fair    Value (2)
Interest rate swaps	$	4,257	$	355	$	4,350	$	447	$	4,257	$	355	$	4,350	$	447

⁽¹⁾  Included in Loans receivable on the Consolidated Statements of Financial Condition.

⁽²⁾  Included in Other liabilities on the Consolidated Statements of Financial Condition.

Derivatives Not Designated in Hedge Relationships

Interest Rate Swaps: Banner Bank uses an interest rate swap program for commercial loan customers, that provides the client with a variable rate loan and enters into an interest rate swap in which the client locks in a fixed rate and the Bank receives a variable rate payment. The Bank offsets its risk exposure by entering into an offsetting interest rate swap with a dealer counterparty for the same notional amount and length of term as the client interest rate swap providing the dealer counterparty with a fixed-rate payment in exchange for a variable-rate payment. These swaps do not qualify as designated hedges; therefore, each swap is accounted for as a free standing derivative.

Mortgage Banking: In the normal course of business, the Company sells originated one- to four-family and multifamily mortgage loans into the secondary mortgage loan markets. During the period of loan origination and prior to the sale of the loans in the secondary market, the Company has exposure to movements in interest rates associated with written interest rate lock commitments with potential borrowers to originate one- to four-family loans that are intended to be sold and for closed one- to four-family and multifamily mortgage loans held for sale that are awaiting sale and delivery into the secondary market. The Company attempts to economically hedge the risk of changing interest rates associated with these mortgage loan commitments by entering into forward sales contracts to sell one- to four-family and multifamily mortgage loans or mortgage-backed securities to broker/dealers as specific prices and dates.

As of March 31, 2018 and December 31, 2017, the notional values or contractual amounts and fair values of the Company's derivatives not designated in hedge relationships were as follows (in thousands):

	Asset Derivatives								Liability Derivatives
	March 31, 2018				December 31, 2017				March 31, 2018				December 31, 2017
	Notional/ Contract Amount		Fair    Value (1)		Notional/ Contract Amount		Fair    Value (1)		Notional/ Contract Amount		Fair    Value (2)		Notional/ Contract Amount		Fair    Value (2)
Interest rate swaps	$	272,627	$	4,236	$	285,047	$	4,636	$	272,627	$	4,236	$	285,047	$	4,636
Mortgage loan commitments	30,799		294		29,739		225		17,049		153		13,763		153
Forward sales contracts	98,409		389		43,069		298		47,500		107		47,000		48
	$	401,835	$	4,919	$	357,855	$	5,159	$	337,176	$	4,496	$	345,810	$	4,837

⁽¹⁾  Included in Other assets on the Consolidated Statements of Financial Condition, with the exception of certain interest swaps and mortgage loan commitments (with a fair value of $381,000 at March 31, 2018 and $499,000 at December 31, 2017), which are included in Loans receivable.

⁽²⁾  Included in Other liabilities on the Consolidated Statements of Financial Condition.

Gains (losses) recognized in income on derivatives not designated in hedge relationships for the three months ended March 31, 2018 and 2017 were as follows (in thousands):

	Location on Consolidated Statements of Operations	Three Months Ended March 31,
		2018			2017
Mortgage loan commitments	Mortgage banking operations	$	68		$	361
Forward sales contracts	Mortgage banking operations	(11		)	(474		)
		$	57		$	(113	)

The Company is exposed to credit-related losses in the event of nonperformance by the counterparty to these agreements. Credit risk of the financial contract is controlled through the credit approval, limits, and monitoring procedures and management does not expect the counterparties to fail their obligations.

In connection with the interest rate swaps between Banner Bank and the dealer counterparties, the agreements contain a provision where if Banner Bank fails to maintain its status as a well/adequately capitalized institution, then the counterparty could terminate the derivative positions and Banner Bank would be required to settle its obligations. Similarly, Banner Bank could be required to settle its obligations under certain of its agreements if specific regulatory events occur, such as a publicly issued prompt corrective action directive, cease and desist order, or a capital maintenance agreement that required Banner Bank to maintain a specific capital level. If Banner Bank had breached any of these provisions at March 31, 2018 or December 31, 2017, it could have been required to settle its obligations under the agreements at the termination value. As of March 31, 2018 and December 31, 2017, the termination value of derivatives in a net liability position related to these agreements was $800,000 and $3.7 million, respectively. The Company generally posts collateral against derivative liabilities in the form of cash, government agency-issued bonds, mortgage-backed securities, or commercial mortgage-backed securities. Collateral posted against derivative liabilities was $17.1 million and $16.9 million as of March 31, 2018 and December 31, 2017, respectively.

Derivative assets and liabilities are recorded at fair value on the balance sheet and do not take into account the effects of master netting agreements. Master netting agreements allow the Company to settle all derivative contracts held with a single counterparty on a net basis and to offset net derivative positions with related collateral where applicable.

The following tables illustrate the potential effect of the Company's derivative master netting arrangements, by type of financial instrument, on the Company's Consolidated Statements of Financial Condition as of March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018
							Gross Amounts of Financial Instruments Not Offset in the Consolidated Statements of Financial Condition
	Gross Amounts Recognized		Amounts offset in the Statement of Financial Condition		Net Amounts in the Statement of Financial Condition		Netting Adjustment Per Applicable Master Netting Agreements			Fair Value of Financial Collateral in the Statement of Financial Condition			Net Amount
Derivative assets
Interest rate swaps	$	4,592	$	—	$	4,592	$	(123	)	$	—		$	4,469
	$	4,592	$	—	$	4,592	$	(123	)	$	—		$	4,469
Derivative liabilities
Interest rate swaps	$	4,592	$	—	$	4,592	$	(123	)	$	(767	)	$	3,702
	$	4,592	$	—	$	4,592	$	(123	)	$	(767	)	$	3,702
	December 31, 2017
							Gross Amounts of Financial Instruments Not Offset in the Consolidated Statements of Financial Condition
	Gross Amounts Recognized		Amounts offset in the Statement of Financial Condition		Net Amounts in the Statement of Financial Condition		Netting Adjustment Per Applicable Master Netting Agreements			Fair Value of Financial Collateral in the Statement of Financial Condition			Net Amount
Derivative assets
Interest rate swaps	$	5,083	$	—	$	5,083	$	(656	)	$	—		$	4,427
	$	5,083	$	—	$	5,083	$	(656	)	$	—		$	4,427
Derivative liabilities
Interest rate swaps	$	5,083	$	—	$	5,083	$	(656	)	$	(3,467	)	$	960
	$	5,083	$	—	$	5,083	$	(656	)	$	(3,467	)	$	960

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REVENUE FROM CONTRACTS WITH CUSTOMERS (Notes)

3 Months Ended

Mar. 31, 2018

Revenue from Contract with Customer [Abstract]

Revenue from Contract with Customer [Text Block]

REVENUE FROM CONTRACTS WITH CUSTOMERS

Disaggregation of Revenue:

Deposit fees and other service charges for the three months ended March 31, 2018 and 2017 are summarized as follows (in thousands):

	Three Months Ended March 31,
	2018			2017
Deposit service charges	$	4,320		$	4,062
Debit and credit interchange fees	7,320			6,538
Debit and credit card expense	(1,970		)	(1,687		)
Merchant services income	2,261			2,187
Merchant services expenses	(1,804		)	(1,797		)
Other service charges	1,169			1,086
Total deposit fees and other service charges	$	11,296		$	10,389

Deposit fees and other service charges

Deposit fees and other service charges include transaction and non-transaction based deposit fees. Transaction based fees on deposit accounts are charged to deposit customers for specific services provided to the customer. These fees include such items as wire fees, official check fees, and overdraft fees. These are contract specific to each individual transaction and do not extend beyond the individual transaction. The performance obligation is completed and the fees are recognized at the time the specific transactional service is provided to the customer. Non-transactional deposit fees are typically monthly account maintenance fees charged on deposit accounts. These are day-to-day contracts that can be canceled by either party without notice. The performance obligation is satisfied and the fees are recognized on a monthly basis after the service period is completed.

Debit and credit card interchange income and expenses

Debit and credit card interchange income represent fees earned when a credit or debit card issued by the Banks is used to purchase goods or services at a merchant. The merchant's bank pays the Banks a default interchange rate set by MasterCard on a transaction by transaction basis. The merchant acquiring bank can stop accepting the Banks’ cards at any time and the Banks can stop further use of cards issued by them at any time. The performance obligation is satisfied and the fees are earned when the cost of the transaction is charged to the Banks cardholders’ card. Direct expenses associated with the credit and debit card are recorded as a net reduction against the interchange income.

Merchant services income

Merchant services income represents fees earned by the Banks for card payment services provided to its merchant customers. The Banks have a contract with a third party to provide card payment services to the Banks’ merchants that contract for those services. The third party provider has contracts with the Banks’ merchants to provide the card payment services. The Banks do not have a direct contractual relationship with its merchants for these services. The Banks set the rates for the services provided by the third party. The third party provider passes the payments made by the Banks’ merchants through to the Banks. The Banks, in turn, pays the third party provider for the services it provides to the Banks’ merchants. These payments to the third party provider are recorded as expenses as a net reduction against fee income. In addition, a portion of the payment received by the Banks represents interchange fees which are passed through to the card issuing bank. Income is primarily earned based on the dollar volume and number of transactions processed. The performance obligation is satisfied and the related fee is earned when each payment is accepted by the processing network.

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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies)

3 Months Ended

Mar. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Accounting

The accompanying unaudited condensed consolidated financial statements include the accounts of Banner Corporation (the Company or Banner), a bank holding company incorporated in the State of Washington and its wholly-owned subsidiaries, Banner Bank and Islanders Bank (the Banks).

These unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (GAAP) for interim financial information and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X as promulgated by the Securities and Exchange Commission (SEC). In preparing these financial statements, the Company has evaluated events and transactions subsequent to March 31, 2018 for potential recognition or disclosure. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of the financial position and results of operations for the periods presented have been included. Certain information and disclosures normally included in annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to the rules and regulations of the SEC and the accounting standards for interim financial statements. Certain reclassifications have been made to the 2017 Consolidated Financial Statements and/or schedules to conform to the 2018 presentation. These reclassifications may have affected certain ratios for the prior periods. The effect of these reclassifications is considered immaterial. All significant intercompany transactions and balances have been eliminated.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect amounts reported in the financial statements. Various elements of the Company’s accounting policies, by their nature, are inherently subject to estimation techniques, valuation assumptions and other subjective assessments. In particular, management has identified several accounting policies that, due to the judgments, estimates and assumptions inherent in those policies, are significant to an understanding of Banner’s financial statements. These policies relate to (i) the methodology for the recognition of interest income, (ii) determination of the provision and allowance for loan losses, (iii) the valuation of financial assets and liabilities recorded at fair value, including other-than-temporary impairment (OTTI) losses, (iv) the valuation of intangibles, such as goodwill, core deposit intangibles (CDI) and mortgage servicing rights, (v) the valuation of real estate held for sale, (vi) the valuation of assets and liabilities acquired in business combinations and subsequent recognition of related income and expense, and (vii) the valuation or recognition of deferred tax assets and liabilities. These policies and judgments, estimates and assumptions are described in greater detail in subsequent notes to the Consolidated Financial Statements and Management’s Discussion and Analysis of Financial Condition and Results of Operations (Critical Accounting Policies) in our Annual Report on Form 10-K for the year ended December 31, 2017 filed with the SEC (2017 Form 10-K).  There have been no significant changes in our application of these accounting policies during the first three months of 2018, except as described in Note 2.

The information included in this Form 10-Q should be read in conjunction with our 2017 Form 10-K.  Interim results are not necessarily indicative of results for a full year or any other interim period.

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ACCOUNTING STANDARDS RECENTLY ISSUED OR ADOPTED Impact of new revenue standard on Consolidated Statements of Operations (Tables)

3 Months Ended

Mar. 31, 2018

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

Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]

The following table presents the impact of adopting of the new revenue standard on our Consolidated Statements of Operations for the three months ended March 31, 2018 and 2017 (in thousands):

	For the three months ended March 31, 2018							For the three months ended March 31, 2017
	As Reported		Balance without Adoption of ASC 606		Effect of Change			As Reported		Balance without Adoption of ASC 606		Effect of Change
Non-interest income:
Deposit fees and other service charges	$	11,296	$	13,100	$	(1,804	)	$	10,389	$	12,186	$	(1,797	)
Non-interest expense:
Payment and card processing expenses	$	3,700	$	5,504	$	(1,804	)	$	3,223	$	5,020	$	(1,797	)

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SECURITIES (Tables)

3 Months Ended

Mar. 31, 2018

Investments, Debt and Equity Securities [Abstract]

Schedule of Securities

The amortized cost, gross unrealized gains and losses and estimated fair value of securities at March 31, 2018 and December 31, 2017 are summarized as follows (in thousands):

	March 31, 2018
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Trading:
Municipal bonds	$	100						$	100
Corporate bonds	27,175							25,474
	$	27,275						$	25,574
Available-for-Sale:
U.S. Government and agency obligations	$	145,280	$	10	$	(1,984	)	$	143,306
Municipal bonds	69,516		315		(873		)	68,958
Corporate bonds	6,152		5		(45		)	6,112
Mortgage-backed or related securities	1,179,084		718		(19,389		)	1,160,413
Asset-backed securities	27,732		128		(144		)	27,716
	$	1,427,764	$	1,176	$	(22,435	)	$	1,406,505
Held-to-Maturity:
U.S. Government and agency obligations	$	1,260	$	27	$	—		$	1,287
Municipal bonds:	192,931		2,334		(2,644		)	192,621
Corporate bonds	3,941		—		(8		)	3,933
Mortgage-backed or related securities	64,513		19		(1,455		)	63,077
	$	262,645	$	2,380	$	(4,107	)	$	260,918

	December 31, 2017
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Trading:
Municipal bonds	$	100						$	100
Corporate bonds	27,132							22,058
Equity securities	14							160
	$	27,246						$	22,318
Available-for-Sale:
U.S. Government and agency obligations	$	72,829	$	68	$	(431	)	$	72,466
Municipal bonds	68,513		665		(445		)	68,733
Corporate bonds	5,431		6		(44		)	5,393
Mortgage-backed or related securities	745,956		1,003		(7,402		)	739,557
Asset-backed securities	27,667		184		(93		)	27,758
Equity securities	5,716		10		(148		)	5,578
	$	926,112	$	1,936	$	(8,563	)	$	919,485
Held-to-Maturity:
U.S. Government and agency obligations	$	1,024	$	29	$	—		$	1,053
Municipal bonds:	189,860		3,385		(1,252		)	191,993
Corporate bonds	3,978		7		—			3,985
Mortgage-backed or related securities	65,409		266		(518		)	65,157
	$	260,271	$	3,687	$	(1,770	)	$	262,188

Schedule of Securities with Continuous Loss Position

At March 31, 2018 and December 31, 2017, the gross unrealized losses and the fair value for securities available-for-sale and held-to-maturity aggregated by the length of time that individual securities have been in a continuous unrealized loss position was as follows (in thousands):

	March 31, 2018
	Less Than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Available-for-Sale:
U.S. Government and agency obligations	$	112,704	$	(1,479	)	$	22,943	$	(505	)	$	135,647	$	(1,984	)
Municipal bonds	30,019		(463		)	13,065		(410		)	43,084		(873		)
Corporate bonds	647		(7		)	4,550		(38		)	5,197		(45		)
Mortgage-backed or related securities	835,758		(15,250		)	114,653		(4,139		)	950,411		(19,389		)
Asset-backed securities	—		—			9,873		(144		)	9,873		(144		)
	$	979,128	$	(17,199	)	$	165,084	$	(5,236	)	$	1,144,212	$	(22,435	)
Held-to-Maturity
Municipal bonds	$	55,484	$	(669	)	$	32,189	$	(1,975	)	$	87,673	$	(2,644	)
Corporate bonds	492		(8		)	—		—			492		(8		)
Mortgage-backed or related securities	54,224		(1,229		)	4,315		(226		)	58,539		(1,455		)
	$	110,200	$	(1,906	)	$	36,504	$	(2,201	)	$	146,704	$	(4,107	)
	December 31, 2017
	Less Than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
Available-for-Sale:
U.S. Government and agency obligations	$	31,276	$	(211	)	$	23,341	$	(220	)	$	54,617	$	(431	)
Municipal bonds	20,879		(185		)	13,360		(260		)	34,239		(445		)
Corporate bonds	296		(4		)	4,682		(40		)	4,978		(44		)
Mortgage-backed or related securities	559,916		(5,138		)	100,662		(2,264		)	660,578		(7,402		)
Asset-backed securities	—		—			9,926		(93		)	9,926		(93		)
Equity securities	5,480		(148		)	—		—			5,480		(148		)
	$	617,847	$	(5,686	)	$	151,971	$	(2,877	)	$	769,818	$	(8,563	)
Held-to-Maturity
Municipal bonds	21,839		(171		)	34,314		(1,081		)	56,153		(1,252		)
Mortgage-backed or related securities	38,023		(378		)	4,434		(140		)	42,457		(518		)
	$	59,862	$	(549	)	$	38,748	$	(1,221	)	$	98,610	$	(1,770	)

Schedule of Securities by Contractual Maturity Date

The amortized cost and estimated fair value of securities at March 31, 2018, by contractual maturity, are shown below (in thousands). Expected maturities will differ from contractual maturities because some securities may be called or prepaid with or without call or prepayment penalties.

	March 31, 2018
	Trading				Available-for-Sale				Held-to-Maturity
	Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value
Maturing in one year or less	$	100	$	100	$	3,090	$	3,081	$	1,943	$	1,942
Maturing after one year through five years	—		—		63,013		62,113		38,334		37,896
Maturing after five years through ten years	—		—		281,112		276,039		96,044		95,696
Maturing after ten years through twenty years	17,175		16,889		186,470		184,722		84,150		85,000
Maturing after twenty years	10,000		8,585		894,079		880,550		42,174		40,384
	$	27,275	$	25,574	$	1,427,764	$	1,406,505	$	262,645	$	260,918

Schedule of Pledged Securities

The following table presents, as of March 31, 2018, investment securities which were pledged to secure borrowings, public deposits or other obligations as permitted or required by law (in thousands):

	March 31, 2018
	Carrying Value		Amortized Cost		Fair Value
Purpose or beneficiary:
State and local governments public deposits	$	129,288	$	129,325	$	130,478
Interest rate swap counterparties	14,924		15,089		14,762
Repurchase agreements	118,820		120,410		118,588
Other	3,900		3,900		3,744
Total pledged securities	$	266,932	$	268,724	$	267,572

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LOANS RECEIVABLE AND THE ALLOWANCE FOR LOAN LOSSES (Tables)

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

Schedule of Loans Receivable, Including Loans Held for Sale

Loans receivable at March 31, 2018 and December 31, 2017 are summarized as follows (dollars in thousands):

	March 31, 2018					December 31, 2017
	Amount			Percent of Total		Amount			Percent of Total
Commercial real estate:
Owner-occupied	$	1,278,814		16.9	%	$	1,284,363		16.9	%
Investment properties	1,876,937			24.8		1,937,423			25.5
Multifamily real estate	321,039			4.2		314,188			4.1
Commercial construction	163,314			2.2		148,435			2.0
Multifamily construction	159,108			2.1		154,662			2.0
One- to four-family construction	434,204			5.7		415,327			5.5
Land and land development:
Residential	167,783			2.2		164,516			2.2
Commercial	24,331			0.3		24,583			0.3
Commercial business	1,296,691			17.2		1,279,894			16.8
Agricultural business, including secured by farmland	307,243			4.2		338,388			4.4
One- to four-family residential	833,598			11.0		848,289			11.2
Consumer:
Consumer secured by one- to four-family	522,826			6.9		522,931			6.9
Consumer—other	170,158			2.3		165,885			2.2
Total loans	7,556,046			100.0	%	7,598,884			100.0	%
Less allowance for loan losses	(92,207		)			(89,028		)
Net loans	$	7,463,839				$	7,509,856

Loan amounts are net of unearned loan fees in excess of unamortized costs of $731,000 as of March 31, 2018 and were net of unamortized costs of $158,000 as of December 31, 2017. Net loans include net discounts on acquired loans of $19.4 million and $21.1 million as of March 31, 2018 and December 31, 2017, respectively.

Schedule of Purchased Credit-Impaired Loans, Changes in Accretable Yield

The following table presents the changes in the accretable yield for PCI loans for the three months ended March 31, 2018 and 2017 (in thousands):

	Three Months Ended March 31,
	2018			2017
Balance, beginning of period	$	6,520		$	8,717
Accretion to interest income	(1,097		)	(1,320		)
Disposals	58			—
Reclassifications from non-accretable difference	807			1,273
Balance, end of period	$	6,288		$	8,670

Impaired loans excluding purchased credit impaired loans [Table Text Block]

The following tables provide information on impaired loans, excluding PCI loans, with and without allowance reserves at March 31, 2018 and December 31, 2017. Recorded investment includes the unpaid principal balance or the carrying amount of loans less charge-offs and net deferred loan fees (in thousands):

	March 31, 2018
	Unpaid Principal Balance		Recorded Investment				Related Allowance
			Without Allowance (1)		With Allowance (2)
Commercial real estate:
Owner-occupied	$	3,872	$	3,444	$	199	$	20
Investment properties	9,346		3,433		5,699		264
One- to four-family construction	186		186		—		—
Land and land development:
Residential	1,134		798		—		—
Commercial business	4,008		3,038		534		39
Agricultural business/farmland	9,598		6,440		3,031		201
One- to four-family residential	8,579		3,136		5,362		182
Consumer:
Consumer secured by one- to four-family	1,346		1,168		138		7
Consumer—other	180		76		71		4
	$	38,249	$	21,719	$	15,034	$	717
	December 31, 2017
	Unpaid Principal Balance		Recorded Investment				Related Allowance
			Without Allowance (1)		With Allowance (2)
Commercial real estate:
Owner-occupied	$	7,807	$	6,447	$	199	$	18
Investment properties	11,296		4,200		6,884		263
One- to four-family construction	298		298		—		—
Land and land development:
Residential	1,134		798		—		—
Commercial business	4,441		3,424		555		50
Agricultural business/farmland	9,388		6,230		3,031		264
One- to four-family residential	9,547		3,709		5,775		178
Consumer:
Consumer secured by one- to four-family	1,498		1,324		139		7
Consumer—other	134		58		73		2
	$	45,543	$	26,488	$	16,656	$	782

⁽¹⁾  Includes loans without an allowance reserve that have been individually evaluated for impairment and that evaluation concluded that no reserve was needed, and $10.6 million of homogenous and small balance loans as of both March 31, 2018 and December 31, 2017, that are collectively evaluated for impairment for which a general reserve has been established.

⁽²⁾  Loans with a specific allowance reserve have been individually evaluated for impairment using either a discounted cash flow analysis or, for collateral dependent loans, current appraisals less costs to sell to establish realizable value.

Schedule of Impaired Loans With and Without Specific Reserves

The following tables summarize our average recorded investment and interest income recognized on impaired loans by loan class for the three months ended March 31, 2018 and 2017 (in thousands):

	Three Months Ended March 31, 2018				Three Months Ended March 31, 2017
	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
Commercial real estate:
Owner-occupied	$	5,383	$	3	$	2,916	$	2
Investment properties	9,972		83		8,893		49
Multifamily real estate	—		—		495		4
One- to four-family construction	605		4		1,180		20
Land and land development:
Residential	798		—		1,899		17
Commercial	—		—		977		—
Commercial business	4,007		7		4,504		7
Agricultural business/farmland	9,109		33		6,282		32
One- to four-family residential	8,892		101		10,404		83
Consumer:
Consumer secured by one- to four-family	1,390		2		1,742		3
Consumer—other	149		1		268		3
	$	40,305	$	234	$	39,560	$	220

Schedule of Troubled Debt Restructurings

The following table presents TDRs by accrual and nonaccrual status at March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018						December 31, 2017
	Accrual Status		Nonaccrual Status		Total TDRs		Accrual Status		Nonaccrual Status		Total TDRs
Commercial real estate:
Owner-occupied	$	199	$	85	$	284	$	199	$	87	$	286
Investment properties	5,699		—		5,699		6,884		—		6,884
Commercial business	534		—		534		555		—		555
Agricultural business, including secured by farmland	2,531		29		2,560		3,129		29		3,158
One- to four-family residential	5,092		457		5,549		5,136		801		5,937
Consumer:
Consumer secured by one- to four-family	138		—		138		139		—		139
Consumer—other	71		—		71		73		—		73
	$	14,264	$	571	$	14,835	$	16,115	$	917	$	17,032

As of both March 31, 2018 and December 31, 2017, the Company had commitments to advance additional funds related to TDRs up to $45,000.

Schedule of Risk-Rated Loans and Non-Risk Rated Loans by Grade and Other Characteristics

The following tables present the Company’s portfolio of risk-rated loans and non-risk-rated loans by grade or other characteristics as of March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018
By class:	Pass (Risk Ratings 1-5)(1)		Special Mention		Substandard		Doubtful		Loss		Total Loans
Commercial real estate:
Owner-occupied	$	1,244,007	$	13,686	$	21,121	$	—	$	—	$	1,278,814
Investment properties	1,866,062		—		10,875		—		—		1,876,937
Multifamily real estate	320,533		—		506		—		—		321,039
Commercial construction	163,314		—		—		—		—		163,314
Multifamily construction	159,108		—		—		—		—		159,108
One- to four-family construction	429,172		—		5,032		—		—		434,204
Land and land development:
Residential	156,144		10,321		1,318		—		—		167,783
Commercial	21,507		—		2,824		—		—		24,331
Commercial business	1,228,831		16,599		51,152		109		—		1,296,691
Agricultural business, including secured by farmland	286,925		6,203		14,115		—		—		307,243
One- to four-family residential	827,788		553		5,257		—		—		833,598
Consumer:
Consumer secured by one- to four-family	520,263		—		2,563		—		—		522,826
Consumer—other	169,889		11		258		—		—		170,158
Total	$	7,393,543	$	47,373	$	115,021	$	109	$	—	$	7,556,046

	December 31, 2017
By class:	Pass (Risk Ratings 1-5)(1)		Special Mention		Substandard		Doubtful		Loss		Total Loans
Commercial real estate:
Owner-occupied	$	1,246,125	$	12,227	$	26,011	$	—	$	—	$	1,284,363
Investment properties	1,918,940		9,118		9,365		—		—		1,937,423
Multifamily real estate	313,432		—		756		—		—		314,188
Commercial construction	148,435		—		—		—		—		148,435
Multifamily construction	154,662		—		—		—		—		154,662
One- to four-family construction	411,802		—		3,525		—		—		415,327
Land and land development:
Residential	153,073		10,554		889		—		—		164,516
Commercial	21,665		—		2,918		—		—		24,583
Commercial business	1,213,365		12,135		54,282		112		—		1,279,894
Agricultural business, including secured by farmland	321,110		3,852		13,426		—		—		338,388
One- to four-family residential	842,304		569		5,416		—		—		848,289
Consumer:
Consumer secured by one- to four-family	520,675		—		2,256		—		—		522,931
Consumer—other	165,594		13		278		—		—		165,885
Total	$	7,431,182	$	48,468	$	119,122	$	112	$	—	$	7,598,884

⁽¹⁾   The Pass category includes some performing loans that are part of homogenous pools which are not individually risk-rated.  This includes all consumer loans, all one- to four-family residential loans and, as of March 31, 2018 and December 31, 2017, in the commercial business category, $535.0 million and $296.8 million, respectively, of credit-scored small business loans.  As loans in these pools become non-performing, they are individually risk-rated.

Schedule of Age Analysis of the Company's Past Due Loans

The following tables provide additional detail on the age analysis of the Company’s past due loans as of March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018
	30-59 Days Past Due		60-89 Days Past Due		90 Days or More Past Due		Total Past Due		Purchased Credit-Impaired		Current		Total Loans		Loans 90 Days or More Past Due and Accruing		Non-accrual
Commercial real estate:
Owner-occupied	$	189	$	169	$	3,079	$	3,437	$	6,372	$	1,269,005	$	1,278,814	$	—	$	3,444
Investment properties	1,402		—		1,109		2,511		7,072		1,867,354		1,876,937		—		3,433
Multifamily real estate	—		—		—		—		167		320,872		321,039		—		—
Commercial construction	—		—		—		—		—		163,314		163,314		—		—
Multifamily construction	—		—		—		—		—		159,108		159,108		—		—
One-to-four-family construction	4,323		320		186		4,829		440		428,935		434,204		—		186
Land and land development:
Residential	—		784		798		1,582		—		166,201		167,783		—		798
Commercial	—		—		—		—		2,824		21,507		24,331		—		—
Commercial business	1,744		702		2,137		4,583		1,829		1,290,279		1,296,691		1		3,037
Agricultural business, including secured by farmland	1,580		—		6,507		8,087		415		298,741		307,243		820		6,120
One- to four-family residential	4,467		476		2,501		7,444		129		826,025		833,598		591		2,815
Consumer:
Consumer secured by one- to four-family	1,412		82		584		2,078		—		520,748		522,826		—		1,168
Consumer—other	847		148		35		1,030		68		169,060		170,158		7		69
Total	$	15,964	$	2,681	$	16,936	$	35,581	$	19,316	$	7,501,149	$	7,556,046	$	1,419	$	21,070

	December 31, 2017
	30-59 Days Past Due		60-89 Days Past Due		90 Days or More Past Due		Total Past Due		Purchased Credit-Impaired		Current		Total Loans		Loans 90 Days or More Past Due and Accruing		Non-accrual
Commercial real estate:
Owner-occupied	$	5,323	$	76	$	5,490	$	10,889	$	7,682	$	1,265,792	$	1,284,363	$	—	$	6,447
Investment properties	1,737		—		4,096		5,833		7,166		1,924,424		1,937,423		—		4,199
Multifamily real estate	105		—		—		105		169		313,914		314,188		—		—
Commercial construction	—		—		—		—		—		148,435		148,435		—		—
Multifamily construction	3,416		—		—		3,416		—		151,246		154,662		—		—
One-to-four-family construction	4,892		725		298		5,915		446		408,966		415,327		298		—
Land and land development:
Residential	—		—		798		798		—		163,718		164,516		—		798
Commercial	—		—		—		—		2,919		21,664		24,583		—		—
Commercial business	1,574		404		2,577		4,555		2,159		1,273,180		1,279,894		18		3,406
Agricultural business, including secured by farmland	598		533		2,017		3,148		565		334,675		338,388		—		6,132
One-to four-family residential	4,475		1,241		2,715		8,431		136		839,722		848,289		1,085		3,264
Consumer:
Consumer secured by one- to four-family	1,355		62		713		2,130		—		520,801		522,931		85		1,239
Consumer—other	609		136		15		760		68		165,057		165,885		—		58
Total	$	24,084	$	3,177	$	18,719	$	45,980	$	21,310	$	7,531,594	$	7,598,884	$	1,486	$	25,543

Allowance for Credit Losses on Financing Receivables

The following tables provide additional information on the allowance for loan losses and loan balances individually and collectively evaluated for impairment at or for the three months ended March 31, 2018 and 2017 (in thousands):

	For the Three Months Ended March 31, 2018
	Commercial Real Estate			Multifamily Real Estate		Construction and Land		Commercial Business			Agricultural Business			One- to Four-Family Residential			Consumer			Unallocated			Total
Allowance for loan losses:
Beginning balance	$	22,824		$	1,633	$	27,568	$	18,311		$	4,053		$	2,055		$	3,866		$	8,718		$	89,028
Provision for loan losses	(715		)	959		1,024		1,923			(1,047		)	1,450			1,913			(3,507		)	2,000
Recoveries	1,352			—		174		170			—			290			112			—			2,098
Charge-offs	—			—		—		(519		)	(7		)	(16		)	(377		)	—			(919		)
Ending balance	$	23,461		$	2,592	$	28,766	$	19,885		$	2,999		$	3,779		$	5,514		$	5,211		$	92,207

	March 31, 2018
	Commercial  Real Estate		Multifamily Real Estate		Construction and Land		Commercial Business		Agricultural Business		One- to Four-Family Residential		Consumer		Unallocated		Total
Allowance for loan losses:
Individually evaluated for impairment	$	284	$	—	$	—	$	39	$	201	$	182	$	11	$	—	$	717
Collectively evaluated for impairment	23,177		2,592		28,766		19,799		2,707		3,597		5,503		5,211		91,352
Purchased credit-impaired loans	—		—		—		47		91		—		—		—		138
Total allowance for loan losses	$	23,461	$	2,592	$	28,766	$	19,885	$	2,999	$	3,779	$	5,514	$	5,211	$	92,207

Loan balances:
Individually evaluated for impairment	$	11,607	$	—	$	750	$	534	$	7,943	$	5,092	$	208	$	—	$	26,134
Collectively evaluated for impairment	3,130,700		320,872		944,726		1,294,328		298,885		828,377		692,708		—		7,510,596
Purchased credit-impaired loans	13,444		167		3,264		1,829		415		129		68		—		19,316
Total loans	$	3,155,751	$	321,039	$	948,740	$	1,296,691	$	307,243	$	833,598	$	692,984	$	—	$	7,556,046

	For the Three Months Ended March 31, 2017
	Commercial  Real Estate			Multifamily Real Estate		Construction and Land			Commercial Business			Agricultural Business			One- to Four-Family Residential			Consumer			Unallocated		Total
Allowance for loan losses:
Beginning balance	$	20,993		$	1,360	$	34,252		$	16,533		$	2,967		$	2,238		$	4,104		$	3,550	$	85,997
Provision for loan losses	(591		)	18		(4,871		)	4,688			324			(409		)	5			2,836		2,000
Recoveries	70			—		83			173			113			145			94			—		678
Charge-offs	—			—		—			(1,626		)	(159		)	—			(363		)	—		(2,148		)
Ending balance	$	20,472		$	1,378	$	29,464		$	19,768		$	3,245		$	1,974		$	3,840		$	6,386	$	86,527

	March 31, 2017
	Commercial Real Estate		Multifamily Real Estate		Construction and Land		Commercial Business		Agricultural Business		One- to Four-Family Residential		Consumer		Unallocated		Total
Allowance for loan losses:
Individually evaluated for impairment	$	419	$	62	$	323	$	62	$	238	$	229	$	11	$	—	$	1,344
Collectively evaluated for impairment	20,053		1,316		29,122		19,706		3,007		1,745		3,829		6,386		85,164
Purchased credit-impaired loans	—		—		19		—		—		—		—		—		19
Total allowance for loan losses	$	20,472	$	1,378	$	29,464	$	19,768	$	3,245	$	1,974	$	3,840	$	6,386	$	86,527

Loan balances:
Individually evaluated for impairment	$	9,506	$	347	$	4,006	$	2,710	$	3,815	$	6,653	$	220	$	—	$	27,257
Collectively evaluated for  impairment	3,341,177		253,725		795,887		1,218,415		308,834		796,026		649,433		—		7,363,497
Purchased credit impaired loans	22,030		174		3,777		3,416		725		312		67		—		30,501
Total loans	$	3,372,713	$	254,246	$	803,670	$	1,224,541	$	313,374	$	802,991	$	649,720	$	—	$	7,421,255

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REAL ESTATE OWNED, NET (Tables)

3 Months Ended

Mar. 31, 2018

Real Estate [Abstract]

Schedule of Changes in Real Estate Owned, Net of Valuation Adjustments

The following table presents the changes in REO for the three months ended March 31, 2018 and 2017 (in thousands):

	Three Months Ended March 31,
	2018			2017
Balance, beginning of the period	$	360		$	11,081
Additions from loan foreclosures	128			—
Proceeds from dispositions of REO	—			(9,193		)
Gain on sale of REO	—			1,202
Valuation adjustments in the period	(160		)	(50		)
Balance, end of the period	$	328		$	3,040

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GOODWILL, OTHER INTANGIBLE ASSETS AND MORTGAGE SERVICING RIGHTS (Tables)

3 Months Ended

Mar. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Changes in Goodwill and Intangible Assets

The following table summarizes the changes in the Company’s goodwill and other intangibles for the three months ended March 31, 2018 and the year ended December 31, 2017 (in thousands):

	Goodwill			CDI			LHI			Total
Balance, December 31, 2016	$	244,583		$	29,701		$	461		$	274,745
Amortization	—			(6,247		)	(184		)	(6,431		)
Other changes(1)	(1,924		)	(1,076		)	—			(3,000		)
Balance, December 31, 2017	242,659			22,378			277			265,314
Amortization	—			(1,382		)	(22		)	(1,404		)
Balance, March 31, 2018	$	242,659		$	20,996		$	255		$	263,910

⁽¹⁾ Acquired goodwill and CDI were adjusted for the sale of the Utah branches in 2017.

Schedule of Estimated Annual Amortization Expense

The following table presents the estimated amortization expense with respect to CDI for the periods indicated (in thousands):

	Estimated Amortization
Remainder of 2018	$	3,990
2019	4,683
2020	3,996
2021	3,307
2022	2,524
Thereafter	2,496
	$	20,996

Schedule of Servicing Assets at Amortized Value

An analysis of our mortgage servicing rights for the three months ended March 31, 2018 and 2017 is presented below (in thousands):

	Three Months Ended March 31,
	2018			2017
Balance, beginning of the period	$	14,738		$	15,249
Additions—amounts capitalized	821			945
Additions—through purchase	15			—
Amortization (1)	(957		)	(922		)
Balance, end of the period (2)	$	14,617		$	15,272

⁽¹⁾  Amortization of mortgage servicing rights is recorded as a reduction of loan servicing income within mortgage banking operations and any unamortized balance is fully amortized if the loan repays in full.

⁽²⁾  There was no valuation allowance as of March 31, 2018 and 2017.

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DEPOSITS (Tables)

3 Months Ended

Mar. 31, 2018

Banking and Thrift [Abstract]

Schedule of Deposit Liabilities

Deposits consisted of the following at March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018		December 31, 2017
Non-interest-bearing accounts	$	3,383,439	$	3,265,544
Interest-bearing checking	1,043,840		971,137
Regular savings accounts	1,637,814		1,557,500
Money market accounts	1,459,614		1,422,313
Total interest-bearing transaction and saving accounts	4,141,268		3,950,950
Certificates of deposit:
Certificates of deposit less than or equal to $250,000	865,353		813,997
Certificates of deposit greater than $250,000	153,002		152,940
Total certificates of deposit(1)	1,018,355		966,937
Total deposits	$	8,543,062	$	8,183,431
Included in total deposits:
Public fund transaction and savings accounts	$	190,311	$	198,719
Public fund interest-bearing certificates	24,928		23,685
Total public deposits	$	215,239	$	222,404
Total brokered deposits	$	169,523	$	57,228

⁽¹⁾ Certificates of deposit include $5,000 and $11,000 of acquisition premiums at March 31, 2018 and December 31, 2017, respectively.

Maturities of Certificates of Deposit

Scheduled maturities and weighted average interest rates of certificate accounts at March 31, 2018 are as follows (dollars in thousands):

	March 31, 2018
	Amount		Weighted Average Rate
Maturing in one year or less	$	703,650	0.63	%
Maturing after one year through two years	146,484		0.98
Maturing after two years through three years	128,810		1.31
Maturing after three years through four years	23,571		1.11
Maturing after four years through five years	13,460		1.33
Maturing after five years	2,380		1.06
Total certificates of deposit	$	1,018,355	0.79	%

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FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Schedule of Fair Value of Financial Instruments, by Balance Sheet Grouping

The following table presents estimated fair values of the Company’s financial instruments as of March 31, 2018 and December 31, 2017, whether or not measured at fair value in the Consolidated Statements of Financial Condition (in thousands):

		March 31, 2018				December 31, 2017
	Level	Carrying Value		Estimated Fair Value		Carrying Value		Estimated Fair Value
Assets:
Cash and cash equivalents	1	$	242,048	$	242,048	$	261,200	$	261,200
Securities—trading	2,3	25,574		25,574		22,318		22,318
Securities—available-for-sale	2	1,406,505		1,406,505		919,485		919,485
Securities—held-to-maturity	2	259,204		257,477		256,793		258,710
Securities—held-to-maturity	3	3,441		3,441		3,478		3,478
Loans held for sale	2	141,808		141,898		40,725		40,923
Loans receivable	3	7,556,046		7,462,004		7,598,884		7,445,990
FHLB stock	3	18,036		18,036		10,334		10,334
Bank-owned life insurance	1	163,519		163,519		162,668		162,668
Mortgage servicing rights	3	14,617		20,560		14,738		19,835
Equity securities	1	5,698		5,698		—		—
Derivatives:
Interest rate swaps	2	4,592		4,592		5,083		5,083
Interest rate lock and forward sales commitments	2	683		683		523		523
Liabilities:
Demand, interest checking and money market accounts	2	5,886,893		5,886,893		5,658,994		5,658,994
Regular savings	2	1,637,814		1,637,814		1,557,500		1,557,500
Certificates of deposit	2	1,018,355		994,616		966,937		947,517
FHLB advances	2	192,195		192,195		202		202
Other borrowings	2	101,844		101,844		95,860		95,860
Junior subordinated debentures	3	112,516		112,516		98,707		98,707
Derivatives:
Interest rate swaps	2	4,592		4,592		5,083		5,083
Interest rate lock and forward sales commitments	2	260		260		201		201

Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following tables present financial assets and liabilities measured at fair value on a recurring basis and the level within the fair value hierarchy of the fair value measurements for those assets and liabilities as of March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018
	Level 1		Level 2		Level 3		Total
Assets:
Securities—trading
Municipal bonds	$	—	$	100	$	—	$	100
Corporate bonds (Trust Preferred Securities)	—		—		25,474		25,474
	—		100		25,474		25,574
Securities—available-for-sale
U.S. Government and agency obligations	—		143,306		—		143,306
Municipal bonds	—		68,958		—		68,958
Corporate bonds	—		6,112		—		6,112
Mortgage-backed or related securities	—		1,160,413		—		1,160,413
Asset-backed securities	—		27,716		—		27,716
	—		1,406,505		—		1,406,505
Loans held for sale	—		137,734		—		137,734
Equity securities	—		5,698		—		5,698
Derivatives
Interest rate swaps	—		4,592		—		4,592
Interest rate lock and forward sales commitments	—		683		—		683
	$	—	$	1,555,312	$	25,474	$	1,580,786
Liabilities:
Junior subordinated debentures, net of unamortized deferred issuance costs	$	—	$	—	$	112,516	$	112,516
Derivatives
Interest rate swaps	—		4,592		—		4,592
Interest rate lock and forward sales commitments	—		260		—		260
	$	—	$	4,852	$	112,516	$	117,368

	December 31, 2017
	Level 1		Level 2		Level 3		Total
Assets:
Securities—trading
Municipal bonds	$	—	$	100	$	—	$	100
Corporate Bonds (Trust Preferred Securities)	—		—		22,058		22,058
Equity securities	—		160		—		160
	—		260		22,058		22,318
Securities—available-for-sale
U.S. Government and agency obligations	—		72,466		—		72,466
Municipal bonds	—		68,733		—		68,733
Corporate bonds	—		5,393		—		5,393
Mortgage-backed securities	—		739,557		—		739,557
Asset-backed securities	—		27,758		—		27,758
Equity securities	—		5,578		—		5,578
	—		919,485		—		919,485
Loans held for sale	—		32,392		—		32,392
Derivatives
Interest rate swaps	—		5,083		—		5,083
Interest rate lock and forward sales commitments	—		523		—		523
	$	—	$	957,743	$	22,058	$	979,801
Liabilities:
Junior subordinated debentures, net of unamortized deferred issuance costs	$	—	$	—	$	98,707	$	98,707
Derivatives
Interest rate swaps	—		5,083		—		5,083
Interest rate lock and forward sales commitments	—		201		—		201
	$	—	$	5,284	$	98,707	$	103,991

Schedule of Valuation Technique, Unobservable Input, and Qualitative Information for Unobservable Inputs

The following table provides a description of the valuation technique, unobservable inputs, and qualitative information about the unobservable inputs for certain of the Company's assets and liabilities classified as Level 3 and measured at fair value on a recurring and non-recurring basis at March 31, 2018 and December 31, 2017:

			Weighted Average Rate / Range
Financial Instruments	Valuation Techniques	Unobservable Inputs	March 31, 2018		December 31, 2017
Corporate Bonds (TPS securities)	Discounted cash flows	Discount rate	6.31	%	6.69	%
Junior subordinated debentures	Discounted cash flows	Discount rate	6.31	%	6.69	%
Impaired loans	Collateral Valuations	Discount to appraised value	8.5	%	8.5% to 20.0%
REO	Appraisals	Discount to appraised value	61	%	42	%

Schedule of Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation

The following tables provide a reconciliation of the assets and liabilities measured at fair value using significant unobservable inputs (Level 3) on a recurring basis during the three months ended March 31, 2018 and 2017 (in thousands):

	Three Months Ended
	March 31, 2018
	Level 3 Fair Value Inputs
	TPS Securities		Borrowings—Junior Subordinated Debentures
Beginning balance	$	22,058	$	98,707
Total gains or losses recognized
Assets gains	3,416		—
Liabilities losses(1)	—		13,809
Ending balance at March 31, 2018	$	25,474	$	112,516
	Three Months Ended
	March 31, 2017
	Level 3 Fair Value Inputs
	TPS Securities		Borrowings—Junior Subordinated Debentures
Beginning balance	$	21,143	$	95,200
Total gains or losses recognized
Assets gains	218		—
Liabilities losses	—		840
Ending balance at March 31, 2017	$	21,361	$	96,040

Schedule of Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

The following tables present financial assets measured at fair value on a non-recurring basis and the level within the fair value hierarchy of the fair value measurements for those assets as of March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018
	Level 1		Level 2		Level 3		Total
Impaired loans	$	—	$	—	$	500	$	500
REO	—		—		328		328
	December 31, 2017
	Level 1		Level 2		Level 3		Total
Impaired loans	$	—	$	—	$	6,535	$	6,535
REO	—		—		360		360

The following table presents the losses resulting from non-recurring fair value adjustments for the three months ended March 31, 2018 and 2017 (in thousands):

	Three months ended March 31,
	2018			2017
REO	$	(160	)	$	(50	)
Total loss from non-recurring measurements	$	(160	)	$	(50	)

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INCOME TAXES AND DEFERRED TAXES INCOME TAXES AND DEFERRED TAXES (Tables)

3 Months Ended

Mar. 31, 2018

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit)

The following table presents the balances of the Company’s tax credit investments and related unfunded commitments at March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018		December 31, 2017
Tax credit investments	$	9,223	$	7,311
Unfunded commitments—tax credit investments	5,483		4,417

The following table presents other information related to the Company's tax credit investments for the three months ended March 31, 2018 and 2017 (in thousands):

	Three Months Ended March 31,
	2018		2017
Tax credits and other tax benefits recognized	$	364	$	285
Tax credit amortization expense included in provision for income taxes	288		199

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CALCULATION OF WEIGHTED AVERAGE SHARES OUTSTANDING FOR EARNINGS PER SHARE (EPS) (Tables)

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Weighted Shares Outstanding

The following table reconciles basic to diluted weighted shares outstanding used to calculate earnings per share data (in thousands, except shares and per share data):

	Three Months Ended March 31,
	2018		2017
Net income	$	28,790	$	23,793
Basic weighted average shares outstanding	32,397,568		32,933,444
Plus unvested restricted stock	118,888		118,015
Diluted weighted shares outstanding	32,516,456		33,051,459
Earnings per common share
Basic	$	0.89	$	0.72
Diluted	$	0.89	$	0.72

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COMMITMENTS AND CONTINGENCIES (Tables)

3 Months Ended

Mar. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Schedule of Financial Instruments With Off-Balance-Sheet Risks

Outstanding commitments for which no asset or liability for the notional amount has been recorded consisted of the following at the dates indicated (in thousands):

	Contract or Notional Amount
	March 31, 2018		December 31, 2017
Commitments to extend credit	$	2,386,614	$	2,300,593
Standby letters of credit and financial guarantees	13,958		14,579
Commitments to originate loans	66,479		56,030
Risk participation agreement	4,141		11,451
Derivatives also included in Note 13:
Commitments to originate loans held for sale	47,848		43,502
Commitments to sell loans secured by one- to four-family residential properties	38,409		33,069
Commitments to sell securities related to mortgage banking activities	107,500		57,000

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DERIVATIVES AND HEDGING (Tables)

3 Months Ended

Mar. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivatives Designated in Hedge Relationships

As of March 31, 2018 and December 31, 2017, the notional values or contractual amounts and fair values of the Company's derivatives designated in hedge relationships were as follows (in thousands):

	Asset Derivatives								Liability Derivatives
	March 31, 2018				December 31, 2017				March 31, 2018				December 31, 2017
	Notional/ Contract Amount		Fair    Value (1)		Notional/ Contract Amount		Fair    Value (1)		Notional/ Contract Amount		Fair    Value (2)		Notional/ Contract Amount		Fair    Value (2)
Interest rate swaps	$	4,257	$	355	$	4,350	$	447	$	4,257	$	355	$	4,350	$	447

⁽¹⁾  Included in Loans receivable on the Consolidated Statements of Financial Condition.

⁽²⁾  Included in Other liabilities on the Consolidated Statements of Financial Condition.

Schedule of Derivatives Not Designated in Hedge Relationships

As of March 31, 2018 and December 31, 2017, the notional values or contractual amounts and fair values of the Company's derivatives not designated in hedge relationships were as follows (in thousands):

	Asset Derivatives								Liability Derivatives
	March 31, 2018				December 31, 2017				March 31, 2018				December 31, 2017
	Notional/ Contract Amount		Fair    Value (1)		Notional/ Contract Amount		Fair    Value (1)		Notional/ Contract Amount		Fair    Value (2)		Notional/ Contract Amount		Fair    Value (2)
Interest rate swaps	$	272,627	$	4,236	$	285,047	$	4,636	$	272,627	$	4,236	$	285,047	$	4,636
Mortgage loan commitments	30,799		294		29,739		225		17,049		153		13,763		153
Forward sales contracts	98,409		389		43,069		298		47,500		107		47,000		48
	$	401,835	$	4,919	$	357,855	$	5,159	$	337,176	$	4,496	$	345,810	$	4,837

⁽¹⁾  Included in Other assets on the Consolidated Statements of Financial Condition, with the exception of certain interest swaps and mortgage loan commitments (with a fair value of $381,000 at March 31, 2018 and $499,000 at December 31, 2017), which are included in Loans receivable.

⁽²⁾  Included in Other liabilities on the Consolidated Statements of Financial Condition.

Gains (losses) recognized in income on derivatives not designated in hedge relationships for the three months ended March 31, 2018 and 2017 were as follows (in thousands):

	Location on Consolidated Statements of Operations	Three Months Ended March 31,
		2018			2017
Mortgage loan commitments	Mortgage banking operations	$	68		$	361
Forward sales contracts	Mortgage banking operations	(11		)	(474		)
		$	57		$	(113	)

Offsetting Assets and Liabilities

The following tables illustrate the potential effect of the Company's derivative master netting arrangements, by type of financial instrument, on the Company's Consolidated Statements of Financial Condition as of March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018
							Gross Amounts of Financial Instruments Not Offset in the Consolidated Statements of Financial Condition
	Gross Amounts Recognized		Amounts offset in the Statement of Financial Condition		Net Amounts in the Statement of Financial Condition		Netting Adjustment Per Applicable Master Netting Agreements			Fair Value of Financial Collateral in the Statement of Financial Condition			Net Amount
Derivative assets
Interest rate swaps	$	4,592	$	—	$	4,592	$	(123	)	$	—		$	4,469
	$	4,592	$	—	$	4,592	$	(123	)	$	—		$	4,469
Derivative liabilities
Interest rate swaps	$	4,592	$	—	$	4,592	$	(123	)	$	(767	)	$	3,702
	$	4,592	$	—	$	4,592	$	(123	)	$	(767	)	$	3,702
	December 31, 2017
							Gross Amounts of Financial Instruments Not Offset in the Consolidated Statements of Financial Condition
	Gross Amounts Recognized		Amounts offset in the Statement of Financial Condition		Net Amounts in the Statement of Financial Condition		Netting Adjustment Per Applicable Master Netting Agreements			Fair Value of Financial Collateral in the Statement of Financial Condition			Net Amount
Derivative assets
Interest rate swaps	$	5,083	$	—	$	5,083	$	(656	)	$	—		$	4,427
	$	5,083	$	—	$	5,083	$	(656	)	$	—		$	4,427
Derivative liabilities
Interest rate swaps	$	5,083	$	—	$	5,083	$	(656	)	$	(3,467	)	$	960
	$	5,083	$	—	$	5,083	$	(656	)	$	(3,467	)	$	960

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REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables)

3 Months Ended

Mar. 31, 2018

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue [Table Text Block]

Deposit fees and other service charges for the three months ended March 31, 2018 and 2017 are summarized as follows (in thousands):

	Three Months Ended March 31,
	2018			2017
Deposit service charges	$	4,320		$	4,062
Debit and credit interchange fees	7,320			6,538
Debit and credit card expense	(1,970		)	(1,687		)
Merchant services income	2,261			2,187
Merchant services expenses	(1,804		)	(1,797		)
Other service charges	1,169			1,086
Total deposit fees and other service charges	$	11,296		$	10,389

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ACCOUNTING STANDARDS RECENTLY ISSUED OR ADOPTED Available for sale securities - equity securities (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Securities—available-for-sale	$ 1,406,505	$ 919,485
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities—available-for-sale		$ 5,578

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ACCOUNTING STANDARDS RECENTLY ISSUED OR ADOPTED Revenue Recognition Standard ASC 606 (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Deposit Fees and Other Service Charges	$ 11,296	$ 10,389
Payment and card processing expenses	3,700	3,223
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Deposit Fees and Other Service Charges	13,100	12,186
Payment and card processing expenses	5,504	5,020
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Deposit Fees and Other Service Charges	(1,804)	(1,797)
Payment and card processing expenses	$ (1,804)	$ (1,797)

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SECURITIES (Schedule of Securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Securities [Line Items]
Securities—trading, Amortized Cost	$ 27,275	$ 27,246
Securities—trading	25,574	22,318
Available-for-sale Securities, Amortized Cost	1,427,764	926,112
Available-for-sale Securities, Gross Unrealized Gains	1,176	1,936
Available-for-sale Securities, Gross Unrealized Losses	(22,435)	(8,563)
Securities—available-for-sale	1,406,505	919,485
Held-to-maturity Securities, Amortized Cost	262,645	260,271
Held-to-maturity Securities, Gross Unrealized Gains	2,380	3,687
Held-to-maturity Securities, Gross Unrealized Losses	4,107	1,770
Securities—held-to-maturity	260,918	262,188
U.S. Government and agency obligations [Member]
Schedule of Securities [Line Items]
Available-for-sale Securities, Amortized Cost	145,280	72,829
Available-for-sale Securities, Gross Unrealized Gains	10	68
Available-for-sale Securities, Gross Unrealized Losses	(1,984)	(431)
Securities—available-for-sale	143,306	72,466
Held-to-maturity Securities, Amortized Cost	1,260	1,024
Held-to-maturity Securities, Gross Unrealized Gains	27	29
Held-to-maturity Securities, Gross Unrealized Losses	0	0
Securities—held-to-maturity	1,287	1,053
Municipal bonds [Member]
Schedule of Securities [Line Items]
Securities—trading, Amortized Cost	100	100
Securities—trading	100	100
Available-for-sale Securities, Amortized Cost	69,516	68,513
Available-for-sale Securities, Gross Unrealized Gains	315	665
Available-for-sale Securities, Gross Unrealized Losses	(873)	(445)
Securities—available-for-sale	68,958	68,733
Held-to-maturity Securities, Amortized Cost	192,931	189,860
Held-to-maturity Securities, Gross Unrealized Gains	2,334	3,385
Held-to-maturity Securities, Gross Unrealized Losses	2,644	1,252
Securities—held-to-maturity	192,621	191,993
Corporate bonds [Member]
Schedule of Securities [Line Items]
Securities—trading, Amortized Cost	27,175	27,132
Securities—trading	25,474	22,058
Available-for-sale Securities, Amortized Cost	6,152	5,431
Available-for-sale Securities, Gross Unrealized Gains	5	6
Available-for-sale Securities, Gross Unrealized Losses	(45)	(44)
Securities—available-for-sale	6,112	5,393
Held-to-maturity Securities, Amortized Cost	3,941	3,978
Held-to-maturity Securities, Gross Unrealized Gains	0	7
Held-to-maturity Securities, Gross Unrealized Losses	8	0
Securities—held-to-maturity	3,933	3,985
Mortgage-backed or related securities [Member]
Schedule of Securities [Line Items]
Available-for-sale Securities, Amortized Cost	1,179,084	745,956
Available-for-sale Securities, Gross Unrealized Gains	718	1,003
Available-for-sale Securities, Gross Unrealized Losses	(19,389)	(7,402)
Securities—available-for-sale	1,160,413	739,557
Held-to-maturity Securities, Amortized Cost	64,513	65,409
Held-to-maturity Securities, Gross Unrealized Gains	19	266
Held-to-maturity Securities, Gross Unrealized Losses	1,455	518
Securities—held-to-maturity	63,077	65,157
Asset-backed Securities [Member]
Schedule of Securities [Line Items]
Available-for-sale Securities, Amortized Cost	27,732	27,667
Available-for-sale Securities, Gross Unrealized Gains	128	184
Available-for-sale Securities, Gross Unrealized Losses	(144)	(93)
Securities—available-for-sale	$ 27,716	27,758
Equity Securities [Member]
Schedule of Securities [Line Items]
Securities—trading, Amortized Cost		14
Securities—trading		160
Available-for-sale Securities, Amortized Cost		5,716
Available-for-sale Securities, Gross Unrealized Gains		10
Available-for-sale Securities, Gross Unrealized Losses		(148)
Securities—available-for-sale		$ 5,578

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SECURITIES (Securities with Continuous Loss Position) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 979,128	$ 617,847
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(17,199)	(5,686)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	165,084	151,971
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(5,236)	(2,877)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	1,144,212	769,818
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(22,435)	(8,563)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	110,200	59,862
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	1,906	549
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	36,504	38,748
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(2,201)	(1,221)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	146,704	98,610
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	4,107	1,770
U.S. Government and agency obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	112,704	31,276
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1,479)	(211)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	22,943	23,341
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(505)	(220)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	135,647	54,617
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(1,984)	(431)
Municipal bonds [Member]
Schedule of Held-to-maturity Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	30,019	20,879
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(463)	(185)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	13,065	13,360
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(410)	(260)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	43,084	34,239
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(873)	(445)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	55,484	21,839
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	669	171
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	32,189	34,314
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(1,975)	(1,081)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	87,673	56,153
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	2,644	1,252
Corporate bonds [Member]
Schedule of Held-to-maturity Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	647	296
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(7)	(4)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	4,550	4,682
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(38)	(40)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	5,197	4,978
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(45)	(44)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	492
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	8
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	492
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	8
Mortgage-backed or related securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	835,758	559,916
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(15,250)	(5,138)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	114,653	100,662
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(4,139)	(2,264)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	950,411	660,578
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(19,389)	(7,402)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	54,224	38,023
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	1,229	378
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	4,315	4,434
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(226)	(140)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	58,539	42,457
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	1,455	518
Asset-backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	9,873	9,926
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(144)	(93)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	9,873	9,926
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ (144)	(93)
Equity Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value		5,480
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		(148)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value		0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value		5,480
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss		$ (148)

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SECURITIES (Securities Debt Maturities) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Trading Securities, Amortized Cost, Maturing in one year or less	$ 100
Trading Securities, Amortized Cost, Maturing after one year through five years	0
Trading Securities, Amortized Cost, Maturing after five years through ten years	0
Trading Securities, Amortized Cost, Maturing after ten years through twenty years	17,175
Trading Securities, Amortized Cost, Maturing after twenty years	10,000
Trading Securities, Amortized Cost	27,275	$ 27,246
Trading Securities, Fair Value, Maturing in one year or less	100
Trading Securities, Fair Value, Maturing after one year through five years	0
Trading Securities, Fair Value, Maturing after five years through ten years	0
Trading Securities, Fair Value, Maturing after ten years through twenty years	16,889
Trading Securities, Fair Value, Maturing after twenty years	8,585
Trading Securities, Fair Value	25,574	22,318
Available-for-sale Securities, Amortized Cost, Maturing in one year or less	3,090
Available-for-sale Securities, Amortized Cost, Maturing after one year through five years	63,013
Available-for-sale Securities, Amortized Cost, Maturing after five years through ten years	281,112
Available-for-sale Securities, Amortized Cost, Maturing after ten years through twenty years	186,470
Available-for-sale Securities, Amortized Cost, Maturing after twenty years	894,079
Available-for-sale Securities, Amortized Cost	1,427,764	926,112
Available-for-sale Securities, Fair Value, Maturing in one year or less	3,081
Available-for-sale Securities, Fair Value, Maturing after one year through five years	62,113
Available-for-sale Securities, Fair Value, Maturing after five years through ten years	276,039
Available-for-sale Securities, Fair Value, Maturing after ten years through twenty years	184,722
Available-for-sale Securities, Fair Value, Maturing after twenty years	880,550
Available-for-sale Securities, Fair Value	1,406,505	919,485
Held-to-maturity Securities, Amortized Cost, Maturing in one year or less	1,943
Held-to-maturity Securities, Amortized Cost, Maturing after one year through five years	38,334
Held-to-maturity Securities, Amortized Cost, Maturing after five years through ten years	96,044
Held-to-maturity Securities, Amortized Cost, Maturing after ten years through twenty years	84,150
Held-to-maturity Securities, Amortized Cost, Maturing after twenty years	42,174
Held-to-maturity Securities, Amortized Cost	262,645	260,271
Held-to-maturity Securities, Fair Value, Maturing in one year or less	1,942
Held-to-maturity Securities, Fair Value, Maturing after one year through five years	37,896
Held-to-maturity Securities, Fair Value, Maturing after five years through ten years	95,696
Held-to-maturity Securities, Fair Value, Maturing after ten years through twenty years	85,000
Held-to-maturity Securities, Fair Value, Maturing after twenty years	40,384
Held-to-maturity Securities, Fair Value	$ 260,918	$ 262,188

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SECURITIES (Securities Pledged) (Details) $ in Thousands	Mar. 31, 2018 USD ($)
Pledged Financial Instruments, Not Separately Reported, Securities [Abstract]
Securities pledged for State and Local Government Public Deposits, Carrying Value	$ 129,288
Securities pledged for Interest Rate Swap Counterparties, Carrying Value	14,924
Securities pledged for Repurchase Agreements, Carrying Value	118,820
Pledged Financial Instruments, Not Separately Reported, Interest-bearing Deposits for Other Debt Facilities	3,900
Total pledged securities, Carrying Value	266,932
Securities pledged for State and Local Government public deposits, Amortized Cost	129,325
Securities pledged for Interest Rate Swap Counterparties, Amortized Cost	15,089
Securities pledged for Repurchase Agreements, Amortized Cost	120,410
Pledged Financial Instruments, Not Separately Reported, Interest-bearing Deposits for Other Debt Facilities, Amortized Cost	3,900
Total pledged securities, Amortized Cost	268,724
Securities pledged for State and Local Government Public Deposits, Fair Value	130,478
Securities pledged for Interest Rate Swap Counterparties, Fair Value	14,762
Securities pledged for Retail Repurchase Agreements, Fair Value	118,588
Pledged Financial Instruments, Not Separately Reported, Interest-bearing Deposits for Other Debt Facilities, Fair Value	3,744
Total pledged securities, Fair Value	$ 267,572

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SECURITIES (Textual) (Details)	3 Months Ended
	Mar. 31, 2018 USD ($) security	Mar. 31, 2017 USD ($) security	Dec. 31, 2017 security
Trading Securities [Abstract]
Trading Securities, Sale Proceeds	$ 0	$ 0
Trading Securities, Realized Gain (Loss)	0	0
Trading Securities, OTTI (Recovery) Charges	$ 0	0
Trading Securities, Number of Securities on Nonaccrual Status | security	0		0
Trading Securities, Unrealized Holding Gain	$ 3,373,000	200,000
Available-for-sale Securities [Abstract]
Available-for-sale Securities, Number of Securities in Unrealized Loss Position | security	277		226
Available-for-sale Securities, Sale Proceeds	$ 0	2,200,000
Available-for-sale Securities, Gross Realized Gain (Loss)	4,000	13,000
Available-for-sale Securities, OTTI Charges	$ 0	$ 0
Available-for-sale Securities, Number of Securities in Nonaccrual Status | security	0		0
Held-to-maturity Securities [Abstract]
Held-to-maturity Securities, Number of Securities in Unrealized Loss Position | security	100		66
Held-to-maturity Securities, Number of Securities Sold | security	0	0
Held-to-maturity Securities, Sale Proceeds	$ 0
Held-to-maturity Securities, OTTI Charges	$ 0	$ 0
Held-to-maturity Securities, Number of Securities in Nonaccrual Status | security	0		0

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LOANS RECEIVABLE AND THE ALLOWANCE FOR LOAN LOSSES (Loans by Type) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 7,556,046	$ 7,598,884	$ 7,421,255
Allowance for loan losses	92,207	89,028	86,527	$ 85,997
Net loans	$ 7,463,839	$ 7,509,856
Percent of total loans	100.00%	100.00%
Unearned loan fees in excess of unamortized costs	$ 731	$ (200)
Discount on acquired loans, net	19,400	21,100
Commerical real estate - owner-occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 1,278,814	$ 1,284,363
Percent of total loans	16.90%	16.90%
Commercial real estate - investment properties [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 1,876,937	$ 1,937,423
Percent of total loans	24.80%	25.50%
Multifamily real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 321,039	$ 314,188	254,246
Allowance for loan losses	$ 2,592	$ 1,633	1,378	1,360
Percent of total loans	4.20%	4.10%
Commercial construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 163,314	$ 148,435
Percent of total loans	2.20%	2.00%
Multifamily construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 159,108	$ 154,662
Percent of total loans	2.10%	2.00%
One- to four-family construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 434,204	$ 415,327
Percent of total loans	5.70%	5.50%
Land and land development - residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 167,783	$ 164,516
Percent of total loans	2.20%	2.20%
Land and land development - commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 24,331	$ 24,583
Percent of total loans	0.30%	0.30%
Commercial business [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 1,296,691	$ 1,279,894	1,224,541
Allowance for loan losses	$ 19,885	$ 18,311	19,768	16,533
Percent of total loans	17.20%	16.80%
Agricultural business, including secured by farmland [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 307,243	$ 338,388	313,374
Allowance for loan losses	$ 2,999	$ 4,053	3,245	2,967
Percent of total loans	4.20%	4.40%
One- to four-family residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 833,598	$ 848,289	802,991
Allowance for loan losses	$ 3,779	$ 2,055	$ 1,974	$ 2,238
Percent of total loans	11.00%	11.20%
Consumer secured by one- to four-family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 522,826	$ 522,931
Percent of total loans	6.90%	6.90%
Consumer - other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 170,158	$ 165,885
Percent of total loans	2.30%	2.20%

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LOANS RECEIVABLE AND THE ALLOWANCE FOR LOAN LOSSES (Purchased Credit-Impaired Loans, Changes in Accretable Yield) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Receivables [Abstract]
Outstanding contractual unpaid balance of purchased credit-impaired loans	$ 29,800		$ 32,500
Carrying balance of purchased credit-impaired loans	19,316	$ 30,501	21,310
Accretable Yield Movement Schedule [Roll Forward]
Balance, beginning of period	6,520	8,717
Accretion to interest income	(1,097)	(1,320)
Disposals	58	0
Reclassifications from non-accretable difference	807	1,273
Balance, end of period	6,288	$ 8,670
Certain Loans Acquired in Transfer, Nonaccretable Difference	$ 9,900
Non-accretable difference			$ 11,300

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LOANS RECEIVABLE AND THE ALLOWANCE FOR LOAN LOSSES (Impaired Loans With and Without Specific Reserves) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	$ 38,249		$ 45,543
Recorded Investment, Without Allowance	21,719		26,488
Recorded Investment, With Allowance	15,034		16,656
Related Allowance	717		782
Average Recorded Investment	40,305	$ 39,560
Interest Income Recognized	234	220
Commerical real estate - owner-occupied [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	3,872		7,807
Recorded Investment, Without Allowance	3,444		6,447
Recorded Investment, With Allowance	199		199
Related Allowance	20		18
Average Recorded Investment	5,383	2,916
Interest Income Recognized	3	2
Commercial real estate - investment properties [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	9,346		11,296
Recorded Investment, Without Allowance	3,433		4,200
Recorded Investment, With Allowance	5,699		6,884
Related Allowance	264		263
Average Recorded Investment	9,972	8,893
Interest Income Recognized	83	49
Multifamily real estate [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	0	495
Interest Income Recognized	0	4
One- to four-family construction [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	186		298
Recorded Investment, Without Allowance	186		298
Recorded Investment, With Allowance	0		0
Related Allowance	0		0
Average Recorded Investment	605	1,180
Interest Income Recognized	4	20
Land and land development - residential [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	1,134		1,134
Recorded Investment, Without Allowance	798		798
Recorded Investment, With Allowance	0		0
Related Allowance	0		0
Average Recorded Investment	798	1,899
Interest Income Recognized	0	17
Land and land development - commercial [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	0	977
Interest Income Recognized	0	0
Commercial business [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	4,008		4,441
Recorded Investment, Without Allowance	3,038		3,424
Recorded Investment, With Allowance	534		555
Related Allowance	39		50
Average Recorded Investment	4,007	4,504
Interest Income Recognized	7	7
Agricultural business, including secured by farmland [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	9,598		9,388
Recorded Investment, Without Allowance	6,440		6,230
Recorded Investment, With Allowance	3,031		3,031
Related Allowance	201		264
Average Recorded Investment	9,109	6,282
Interest Income Recognized	33	32
One- to four-family residential [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	8,579		9,547
Recorded Investment, Without Allowance	3,136		3,709
Recorded Investment, With Allowance	5,362		5,775
Related Allowance	182		178
Average Recorded Investment	8,892	10,404
Interest Income Recognized	101	83
Consumer secured by one- to four-family [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	1,346		1,498
Recorded Investment, Without Allowance	1,168		1,324
Recorded Investment, With Allowance	138		139
Related Allowance	7		7
Average Recorded Investment	1,390	1,742
Interest Income Recognized	2	3
Consumer - other [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	180		134
Recorded Investment, Without Allowance	76		58
Recorded Investment, With Allowance	71		73
Related Allowance	4		$ 2
Average Recorded Investment	149	268
Interest Income Recognized	$ 1	$ 3

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LOANS RECEIVABLE AND THE ALLOWANCE FOR LOAN LOSSES (Troubled Debt Restructuring) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status	$ 14,264	$ 16,115
TDRs on Nonaccrual Status	571	917
Total TDRs	14,835	17,032
Commitments to advance funds related to TDRs, maximum additional amounts	45	45
Commerical real estate - owner-occupied [Member]
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status	199	199
TDRs on Nonaccrual Status	85	87
Total TDRs	284	286
Commercial real estate - investment properties [Member]
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status	5,699	6,884
TDRs on Nonaccrual Status	0	0
Total TDRs	5,699	6,884
Commercial business [Member]
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status	534	555
TDRs on Nonaccrual Status	0	0
Total TDRs	534	555
Agricultural business, including secured by farmland [Member]
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status	2,531	3,129
TDRs on Nonaccrual Status	29	29
Total TDRs	2,560	3,158
One- to four-family residential [Member]
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status	5,092	5,136
TDRs on Nonaccrual Status	457	801
Total TDRs	5,549	5,937
Consumer secured by one- to four-family [Member]
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status	138	139
TDRs on Nonaccrual Status	0	0
Total TDRs	138	139
Consumer - other [Member]
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status	71	73
TDRs on Nonaccrual Status	0	0
Total TDRs	$ 71	$ 73

XML

LOANS RECEIVABLE AND THE ALLOWANCE FOR LOAN LOSSES (Newly Restructured Loans) (Details)	3 Months Ended
	Dec. 31, 2017 contract
Financing Receivable, Modifications [Line Items]
Number of Contracts	0

XML

LOANS RECEIVABLE AND THE ALLOWANCE FOR LOAN LOSSES LOANS RECEIVABLE AND THE ALLOWANCE FOR LOAN LOSSES (Troubled Debt Restructuring Which Incurred Payment Default) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
TDRs Which Incurred a Payment Default	$ 0	$ 0

XML

LOANS RECEIVABLE AND THE ALLOWANCE FOR LOAN LOSSES (Risk-Rated and Non-Risk Rated Loans by Grade and Other Characteristic) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	$ 7,556,046	$ 7,598,884	$ 7,421,255
Owner-occupied Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	1,278,814	1,284,363
Commercial real estate - investment properties [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	1,876,937	1,937,423
Multifamily real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	321,039	314,188	254,246
Commercial construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	163,314	148,435
Multifamily construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	159,108	154,662
One- to four-family construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	434,204	415,327
Land and land development - residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	167,783	164,516
Land and land development - commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	24,331	24,583
Commercial business [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	1,296,691	1,279,894	1,224,541
Agricultural Business/Farmland [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	307,243	338,388	313,374
One- to four-family [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	833,598	848,289	$ 802,991
Consumer secured by one- to four-family [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	522,826	522,931
Consumer Borrower [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	170,158	165,885
Pass (Risk Ratings 1-5) [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	7,393,543	7,431,182
Pass (Risk Ratings 1-5) [Member] | Owner-occupied Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	1,244,007	1,246,125
Pass (Risk Ratings 1-5) [Member] | Commercial real estate - investment properties [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	1,866,062	1,918,940
Pass (Risk Ratings 1-5) [Member] | Multifamily real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	320,533	313,432
Pass (Risk Ratings 1-5) [Member] | Commercial construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	163,314	148,435
Pass (Risk Ratings 1-5) [Member] | Multifamily construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	159,108	154,662
Pass (Risk Ratings 1-5) [Member] | One- to four-family construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	429,172	411,802
Pass (Risk Ratings 1-5) [Member] | Land and land development - residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	156,144	153,073
Pass (Risk Ratings 1-5) [Member] | Land and land development - commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	21,507	21,665
Pass (Risk Ratings 1-5) [Member] | Commercial business [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	1,228,831	1,213,365
Pass (Risk Ratings 1-5) [Member] | Small Credit-Scored Business Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	535,000	296,800
Pass (Risk Ratings 1-5) [Member] | Agricultural Business/Farmland [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	286,925	321,110
Pass (Risk Ratings 1-5) [Member] | One- to four-family [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	827,788	842,304
Pass (Risk Ratings 1-5) [Member] | Consumer secured by one- to four-family [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	520,263	520,675
Pass (Risk Ratings 1-5) [Member] | Consumer Borrower [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	169,889	165,594
Special mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	47,373	48,468
Special mention [Member] | Owner-occupied Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	13,686	12,227
Special mention [Member] | Commercial real estate - investment properties [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	9,118
Special mention [Member] | Multifamily real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Special mention [Member] | Commercial construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Special mention [Member] | Multifamily construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Special mention [Member] | One- to four-family construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Special mention [Member] | Land and land development - residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	10,321	10,554
Special mention [Member] | Land and land development - commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Special mention [Member] | Commercial business [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	16,599	12,135
Special mention [Member] | Agricultural Business/Farmland [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	6,203	3,852
Special mention [Member] | One- to four-family [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	553	569
Special mention [Member] | Consumer secured by one- to four-family [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Special mention [Member] | Consumer Borrower [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	11	13
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	115,021	119,122
Substandard [Member] | Owner-occupied Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	21,121	26,011
Substandard [Member] | Commercial real estate - investment properties [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	10,875	9,365
Substandard [Member] | Multifamily real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	506	756
Substandard [Member] | Commercial construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Substandard [Member] | Multifamily construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Substandard [Member] | One- to four-family construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	5,032	3,525
Substandard [Member] | Land and land development - residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	1,318	889
Substandard [Member] | Land and land development - commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	2,824	2,918
Substandard [Member] | Commercial business [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	51,152	54,282
Substandard [Member] | Agricultural Business/Farmland [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	14,115	13,426
Substandard [Member] | One- to four-family [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	5,257	5,416
Substandard [Member] | Consumer secured by one- to four-family [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	2,563	2,256
Substandard [Member] | Consumer Borrower [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	258	278
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	109	112
Doubtful [Member] | Owner-occupied Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Doubtful [Member] | Commercial real estate - investment properties [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Doubtful [Member] | Multifamily real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Doubtful [Member] | Commercial construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Doubtful [Member] | Multifamily construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Doubtful [Member] | One- to four-family construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Doubtful [Member] | Land and land development - residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Doubtful [Member] | Land and land development - commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Doubtful [Member] | Commercial business [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	109	112
Doubtful [Member] | Agricultural Business/Farmland [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Doubtful [Member] | One- to four-family [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Doubtful [Member] | Consumer secured by one- to four-family [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Doubtful [Member] | Consumer Borrower [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Loss [Member] | Owner-occupied Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Loss [Member] | Commercial real estate - investment properties [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Loss [Member] | Multifamily real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Loss [Member] | Commercial construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Loss [Member] | Multifamily construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Loss [Member] | One- to four-family construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Loss [Member] | Land and land development - residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Loss [Member] | Land and land development - commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Loss [Member] | Commercial business [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Loss [Member] | Agricultural Business/Farmland [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Loss [Member] | One- to four-family [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Loss [Member] | Consumer secured by one- to four-family [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Loss [Member] | Consumer Borrower [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	$ 0	$ 0

XML

LOANS RECEIVABLE AND THE ALLOWANCE FOR LOAN LOSSES (Age Analysis of Company's Past Due Loans) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	$ 35,581	$ 45,980
Purchased Credit-Impaired	19,316	21,310	$ 30,501
Current	7,501,149	7,531,594
Total loans	7,556,046	7,598,884	7,421,255
Loans 90 days or more past due and still accruing	1,419	1,486
Nonaccrual loans	21,070	25,543
Commerical real estate - owner-occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	3,437	10,889
Purchased Credit-Impaired	6,372	7,682
Current	1,269,005	1,265,792
Total loans	1,278,814	1,284,363
Loans 90 days or more past due and still accruing	0	0
Nonaccrual loans	3,444	6,447
Commercial real estate - investment properties [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	2,511	5,833
Purchased Credit-Impaired	7,072	7,166
Current	1,867,354	1,924,424
Total loans	1,876,937	1,937,423
Loans 90 days or more past due and still accruing	0	0
Nonaccrual loans	3,433	4,199
Multifamily real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	105
Purchased Credit-Impaired	167	169	174
Current	320,872	313,914
Total loans	321,039	314,188	254,246
Loans 90 days or more past due and still accruing	0	0
Nonaccrual loans	0	0
Commercial construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Purchased Credit-Impaired	0	0
Current	163,314	148,435
Total loans	163,314	148,435
Loans 90 days or more past due and still accruing	0	0
Nonaccrual loans	0	0
Multifamily construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	3,416
Purchased Credit-Impaired	0	0
Current	159,108	151,246
Total loans	159,108	154,662
Loans 90 days or more past due and still accruing	0	0
Nonaccrual loans	0	0
One- to four-family construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	4,829	5,915
Purchased Credit-Impaired	440	446
Current	428,935	408,966
Total loans	434,204	415,327
Loans 90 days or more past due and still accruing	0	298
Nonaccrual loans	186	0
Land and land development - residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,582	798
Purchased Credit-Impaired	0	0
Current	166,201	163,718
Total loans	167,783	164,516
Loans 90 days or more past due and still accruing	0	0
Nonaccrual loans	798	798
Land and land development - commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Purchased Credit-Impaired	2,824	2,919
Current	21,507	21,664
Total loans	24,331	24,583
Loans 90 days or more past due and still accruing	0	0
Nonaccrual loans	0	0
Commercial business [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	4,583	4,555
Purchased Credit-Impaired	1,829	2,159	3,416
Current	1,290,279	1,273,180
Total loans	1,296,691	1,279,894	1,224,541
Loans 90 days or more past due and still accruing	1	18
Nonaccrual loans	3,037	3,406
Agricultural business, including secured by farmland [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	8,087	3,148
Purchased Credit-Impaired	415	565	725
Current	298,741	334,675
Total loans	307,243	338,388	313,374
Loans 90 days or more past due and still accruing	820	0
Nonaccrual loans	6,120	6,132
One- to four-family residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	7,444	8,431
Purchased Credit-Impaired	129	136	312
Current	826,025	839,722
Total loans	833,598	848,289	$ 802,991
Loans 90 days or more past due and still accruing	591	1,085
Nonaccrual loans	2,815	3,264
Consumer secured by one- to four-family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	2,078	2,130
Purchased Credit-Impaired	0	0
Current	520,748	520,801
Total loans	522,826	522,931
Loans 90 days or more past due and still accruing	0	85
Nonaccrual loans	1,168	1,239
Consumer - other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,030	760
Purchased Credit-Impaired	68	68
Current	169,060	165,057
Total loans	170,158	165,885
Loans 90 days or more past due and still accruing	7	0
Nonaccrual loans	69	58
30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	15,964	24,084
30 to 59 Days Past Due [Member] | Commerical real estate - owner-occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	189	5,323
30 to 59 Days Past Due [Member] | Commercial real estate - investment properties [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,402	1,737
30 to 59 Days Past Due [Member] | Multifamily real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	105
30 to 59 Days Past Due [Member] | Commercial construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
30 to 59 Days Past Due [Member] | Multifamily construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	3,416
30 to 59 Days Past Due [Member] | One- to four-family construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	4,323	4,892
30 to 59 Days Past Due [Member] | Land and land development - residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
30 to 59 Days Past Due [Member] | Land and land development - commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
30 to 59 Days Past Due [Member] | Commercial business [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,744	1,574
30 to 59 Days Past Due [Member] | Agricultural business, including secured by farmland [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,580	598
30 to 59 Days Past Due [Member] | One- to four-family residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	4,467	4,475
30 to 59 Days Past Due [Member] | Consumer secured by one- to four-family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,412	1,355
30 to 59 Days Past Due [Member] | Consumer - other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	847	609
60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	2,681	3,177
60 to 89 Days Past Due [Member] | Commerical real estate - owner-occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	169	76
60 to 89 Days Past Due [Member] | Commercial real estate - investment properties [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
60 to 89 Days Past Due [Member] | Multifamily real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
60 to 89 Days Past Due [Member] | Commercial construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
60 to 89 Days Past Due [Member] | Multifamily construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
60 to 89 Days Past Due [Member] | One- to four-family construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	320	725
60 to 89 Days Past Due [Member] | Land and land development - residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	784	0
60 to 89 Days Past Due [Member] | Land and land development - commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
60 to 89 Days Past Due [Member] | Commercial business [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	702	404
60 to 89 Days Past Due [Member] | Agricultural business, including secured by farmland [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	533
60 to 89 Days Past Due [Member] | One- to four-family residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	476	1,241
60 to 89 Days Past Due [Member] | Consumer secured by one- to four-family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	82	62
60 to 89 Days Past Due [Member] | Consumer - other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	148	136
90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	16,936	18,719
90 Days or More Past Due [Member] | Commerical real estate - owner-occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	3,079	5,490
90 Days or More Past Due [Member] | Commercial real estate - investment properties [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,109	4,096
90 Days or More Past Due [Member] | Multifamily real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
90 Days or More Past Due [Member] | Commercial construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
90 Days or More Past Due [Member] | Multifamily construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
90 Days or More Past Due [Member] | One- to four-family construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	186	298
90 Days or More Past Due [Member] | Land and land development - residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	798	798
90 Days or More Past Due [Member] | Land and land development - commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
90 Days or More Past Due [Member] | Commercial business [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	2,137	2,577
90 Days or More Past Due [Member] | Agricultural business, including secured by farmland [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	6,507	2,017
90 Days or More Past Due [Member] | One- to four-family residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	2,501	2,715
90 Days or More Past Due [Member] | Consumer secured by one- to four-family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	584	713
90 Days or More Past Due [Member] | Consumer - other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	$ 35	$ 15

XML

LOANS RECEIVABLE AND THE ALLOWANCE FOR LOAN LOSSES (Allowance for Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance	$ 89,028	$ 85,997
Provision for loan losses	2,000	2,000
Recoveries	2,098	678
Charge-offs	(919)	(2,148)
Allowance for loan losses, Ending balance	92,207	86,527
Financing Receivable, Allowance for Loan Losses, Additional Information [Abstract]
Allowance individually evaluated for impairment			$ 717		$ 1,344
Allowance collectively evaluated for impairment			91,352		85,164
Allowance for purchased credit-impaired loans			138		19
Total allowance for loan losses	89,028	85,997	92,207	$ 89,028	86,527
Loans individually evaluated for impairment			26,134		27,257
Loans collectively evaluated for impairment			7,510,596		7,363,497
Purchased Credit-Impaired			19,316	21,310	30,501
Total loans			7,556,046	7,598,884	7,421,255
Commercial real estate [Member]
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance	22,824	20,993
Provision for loan losses	(715)	(591)
Recoveries	1,352	70
Charge-offs	0	0
Allowance for loan losses, Ending balance	23,461	20,472
Financing Receivable, Allowance for Loan Losses, Additional Information [Abstract]
Allowance individually evaluated for impairment			284		419
Allowance collectively evaluated for impairment			23,177		20,053
Allowance for purchased credit-impaired loans			0		0
Total allowance for loan losses	22,824	20,993	23,461	22,824	20,472
Loans individually evaluated for impairment			11,607		9,506
Loans collectively evaluated for impairment			3,130,700		3,341,177
Purchased Credit-Impaired			13,444		22,030
Total loans			3,155,751		3,372,713
Multifamily real estate [Member]
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance	1,633	1,360
Provision for loan losses	959	18
Recoveries	0	0
Charge-offs	0	0
Allowance for loan losses, Ending balance	2,592	1,378
Financing Receivable, Allowance for Loan Losses, Additional Information [Abstract]
Allowance individually evaluated for impairment			0		62
Allowance collectively evaluated for impairment			2,592		1,316
Allowance for purchased credit-impaired loans			0		0
Total allowance for loan losses	1,633	1,360	2,592	1,633	1,378
Loans individually evaluated for impairment			0		347
Loans collectively evaluated for impairment			320,872		253,725
Purchased Credit-Impaired			167	169	174
Total loans			321,039	314,188	254,246
Construction and Land [Member]
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance	27,568	34,252
Provision for loan losses	1,024	(4,871)
Recoveries	174	83
Charge-offs	0	0
Allowance for loan losses, Ending balance	28,766	29,464
Financing Receivable, Allowance for Loan Losses, Additional Information [Abstract]
Allowance individually evaluated for impairment			0		323
Allowance collectively evaluated for impairment			28,766		29,122
Allowance for purchased credit-impaired loans			0		19
Total allowance for loan losses	27,568	34,252	28,766	27,568	29,464
Loans individually evaluated for impairment			750		4,006
Loans collectively evaluated for impairment			944,726		795,887
Purchased Credit-Impaired			3,264		3,777
Total loans			948,740		803,670
Commercial business [Member]
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance	18,311	16,533
Provision for loan losses	1,923	4,688
Recoveries	170	173
Charge-offs	(519)	(1,626)
Allowance for loan losses, Ending balance	19,885	19,768
Financing Receivable, Allowance for Loan Losses, Additional Information [Abstract]
Allowance individually evaluated for impairment			39		62
Allowance collectively evaluated for impairment			19,799		19,706
Allowance for purchased credit-impaired loans			47		0
Total allowance for loan losses	18,311	16,533	19,885	18,311	19,768
Loans individually evaluated for impairment			534		2,710
Loans collectively evaluated for impairment			1,294,328		1,218,415
Purchased Credit-Impaired			1,829	2,159	3,416
Total loans			1,296,691	1,279,894	1,224,541
Agricultural Business/Farmland [Member]
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance	4,053	2,967
Provision for loan losses	(1,047)	324
Recoveries	0	113
Charge-offs	(7)	(159)
Allowance for loan losses, Ending balance	2,999	3,245
Financing Receivable, Allowance for Loan Losses, Additional Information [Abstract]
Allowance individually evaluated for impairment			201		238
Allowance collectively evaluated for impairment			2,707		3,007
Allowance for purchased credit-impaired loans			91		0
Total allowance for loan losses	4,053	2,967	2,999	4,053	3,245
Loans individually evaluated for impairment			7,943		3,815
Loans collectively evaluated for impairment			298,885		308,834
Purchased Credit-Impaired			415	565	725
Total loans			307,243	338,388	313,374
One- to four-family [Member]
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance	2,055	2,238
Provision for loan losses	1,450	(409)
Recoveries	290	145
Charge-offs	(16)	0
Allowance for loan losses, Ending balance	3,779	1,974
Financing Receivable, Allowance for Loan Losses, Additional Information [Abstract]
Allowance individually evaluated for impairment			182		229
Allowance collectively evaluated for impairment			3,597		1,745
Allowance for purchased credit-impaired loans			0		0
Total allowance for loan losses	2,055	2,238	3,779	2,055	1,974
Loans individually evaluated for impairment			5,092		6,653
Loans collectively evaluated for impairment			828,377		796,026
Purchased Credit-Impaired			129	136	312
Total loans			833,598	848,289	802,991
Consumer [Member]
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance	3,866	4,104
Provision for loan losses	1,913	5
Recoveries	112	94
Charge-offs	(377)	(363)
Allowance for loan losses, Ending balance	5,514	3,840
Financing Receivable, Allowance for Loan Losses, Additional Information [Abstract]
Allowance individually evaluated for impairment			11		11
Allowance collectively evaluated for impairment			5,503		3,829
Allowance for purchased credit-impaired loans			0		0
Total allowance for loan losses	3,866	4,104	5,514	3,866	3,840
Loans individually evaluated for impairment			208		220
Loans collectively evaluated for impairment			692,708		649,433
Purchased Credit-Impaired			68		67
Total loans			692,984		649,720
Unallocated Financing Receivables [Member]
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance	8,718	3,550
Provision for loan losses	(3,507)	2,836
Recoveries	0	0
Charge-offs	0	0
Allowance for loan losses, Ending balance	5,211	6,386
Financing Receivable, Allowance for Loan Losses, Additional Information [Abstract]
Allowance individually evaluated for impairment			0		0
Allowance collectively evaluated for impairment			5,211		6,386
Allowance for purchased credit-impaired loans			0		0
Total allowance for loan losses	$ 8,718	$ 3,550	5,211	$ 8,718	6,386
Loans individually evaluated for impairment			0		0
Loans collectively evaluated for impairment			0		0
Purchased Credit-Impaired			0		0
Total loans			$ 0		$ 0

XML

REAL ESTATE OWNED, NET (REO Rollforward) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Real Estate Owned [Roll Forward]
Balance, beginning of the period	$ 360	$ 11,081
Additions from loan foreclosures	128	0
Proceeds from dispositions of REO	0	(9,193)
Gain on sale of REO	0	1,202
Valuation adjustments in the period	(160)	(50)
Balance, end of the period	$ 328	$ 3,040

XML

REAL ESTATE OWNED, NET REAL ESTATE OWNED, NET (Textual) (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Real Estate Owned [Line Items]
Real Estate Owned	$ 328,000	$ 360,000	$ 3,040,000	$ 11,081,000
Mortgage Loans in Process of Foreclosure, Amount	1,600,000	2,042,000
One- to four-family residential [Member]
Real Estate Owned [Line Items]
Real Estate Owned	$ 98,000	$ 0

XML

GOODWILL, OTHER INTANGIBLE ASSETS AND MORTGAGE SERVICING RIGHTS (Finite-Lived Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Finite-lived Intangible Assets [Roll Forward]
Goodwill, beginning of period	$ 242,659	$ 244,583
Goodwill and other intangibles, net, beginning of period	265,314	274,745
Amortization	(1,404)	(6,431)
Goodwill, end of period	242,659	242,659
Goodwill and other intangibles, net, end of period	263,910	265,314
Goodwill, Other Increase (Decrease)		(1,924)
Intangible Assets (including Goodwill), Other Changes		(3,000)
Core Deposit Intangibles [Member]
Finite-lived Intangible Assets [Roll Forward]
Finite lived assets Balance, beginning of period	22,378	29,701
Amortization	(1,382)	(6,247)
Finite lived assets Balance, end of period	20,996	22,378
Finite-Lived Intangible Assets, Other Changes		(1,076)
Leasehold Improvements [Member]
Finite-lived Intangible Assets [Roll Forward]
Finite lived assets Balance, beginning of period	277	461
Amortization	(22)	(184)
Finite lived assets Balance, end of period	$ 255	277
Finite-Lived Intangible Assets, Other Changes		$ 0

XML

GOODWILL, OTHER INTANGIBLE ASSETS AND MORTGAGE SERVICING RIGHTS (Estimated Annual Amortization Expense) (Details) - Core Deposit Intangibles [Member] - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Remainder of 2017	$ 3,990
2018	4,683
2019	3,996
2020	3,307
2021	2,524
Thereafter	2,496
Finite lived assets, net	$ 20,996	$ 22,378	$ 29,701

XML

GOODWILL, OTHER INTANGIBLE ASSETS AND MORTGAGE SERVICING RIGHTS (Mortgage Servicing Rights) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Servicing Asset at Amortized Value, Balance [Roll Forward]
Servicing Asset at Amortized Cost, Additions, Acquisitions		$ 15	$ 0
Mortgage Servicing Rights [Member]
Morgage Servicing Rights at Amortized Value [Line Items]
Loans Serviced For Others		2,230,000		$ 2,190,000
Custodial Accounts		19,100		$ 10,200
Servicing Asset at Amortized Value, Balance [Roll Forward]
Balance, net of valuation allowance, beginning of the period		14,738	15,249
Additions—amounts capitalized		821	945
Amortization	[1]	(957)	(922)
Balance, net of valuation allowance, end of the period	[2]	14,617	$ 15,272
Valuation allowance, end of period		$ 0

[1] Amortization of mortgage servicing rights is recorded as a reduction of loan servicing income within mortgage banking operations and any unamortized balance is fully amortized if the loan repays in full.

[2] There was no valuation allowance as of March 31, 2018 and 2017.

XML

DEPOSITS (Deposit Liabilities) (Details) - USD ($)		Mar. 31, 2018	Dec. 31, 2017
Deposits:
Non-interest-bearing accounts		$ 3,383,439,000	$ 3,265,544,000
Interest-bearing checking		1,043,840,000	971,137,000
Regular savings accounts		1,637,814,000	1,557,500,000
Money market accounts		1,459,614,000	1,422,313,000
Total interest-bearing transaction and saving accounts		4,141,268,000	3,950,950,000
Certificates of deposit less than or equal to $250,000		865,353,000	813,997,000
Certificates of deposit greater than $250,000		153,002,000	152,940,000
Total certificates of deposit	[1]	1,018,355,000	966,937,000
Total deposits		8,543,062,000	8,183,431,000
Included in total deposits:
Public fund transaction and savings accounts		190,311,000	198,719,000
Public fund interest-bearing certificates		24,928,000	23,685,000
Total public deposits		215,239,000	222,404,000
Total brokered deposits		169,523,000	57,228,000
CD acquisition premium		$ 5,000	$ 11,000

[1] Certificates of deposit include $5,000 and $11,000 of acquisition premiums at March 31, 2018 and December 31, 2017, respectively.

XML

DEPOSITS DEPOSITS (Maturities and Weighted Average Interest Rates of Certificates of Deposit) (Details) - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017
Maturities of Time Deposits [Abstract]
Maturing in one year or less		$ 703,650
Maturing after one year through two years		146,484
Maturing after two years through three years		128,810
Maturing after three years through four years		23,571
Maturing after four years through five years		13,460
Maturing after five years		2,380
Total certificates of deposit	[1]	$ 1,018,355	$ 966,937
Weighted Average Rate [Abstract]
Maturing in one year or less		0.63%
Maturing after one year through two years		0.98%
Maturing after two years through three years		1.31%
Maturing after three years through four years		1.11%
Maturing after four years through five years		1.33%
Maturing after five years		1.06%
Total certificates of deposit		0.79%

[1] Certificates of deposit include $5,000 and $11,000 of acquisition premiums at March 31, 2018 and December 31, 2017, respectively.

XML

DEPOSITS DEPOSITS (Textual) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Banking and Thrift [Abstract]
Time Deposits, at or Above FDIC Insurance Limit	$ 156.3	$ 155.9

XML

FAIR VALUE OF FINANCIAL INSTRUMENTS (Fair Value By Balance Sheet Location) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Assets:
Securities—trading	$ 25,574	$ 22,318
Securities—available-for-sale	1,406,505	919,485
Securities—held-to-maturity	260,918	262,188
Liabilities:
FHLB advances at fair value	192,195	202
Carrying Value
Assets:
Cash and cash equivalents	242,048	261,200
Securities—trading	25,574	22,318
Securities—available-for-sale	1,406,505	919,485
Loans receivable held for sale	141,808	40,725
Loans receivable	7,556,046	7,598,884
FHLB stock	18,036	10,334
Bank-owned life insurance	163,519	162,668
Mortgage servicing rights	14,617	14,738
Marketable Securities, Equity Securities	5,698	0
Liabilities:
Demand, interest checking and money market accounts	5,886,893	5,658,994
Regular savings	1,637,814	1,557,500
Certificates of deposit	1,018,355	966,937
FHLB advances at fair value	192,195	202
Other borrowings	101,844	95,860
Junior subordinated debentures at fair value	112,516	98,707
Estimated Fair Value
Assets:
Cash and cash equivalents	242,048	261,200
Securities—trading	25,574	22,318
Securities—available-for-sale	1,406,505	919,485
Loans receivable held for sale	141,898	40,923
Loans receivable	7,462,004	7,445,990
FHLB stock	18,036	10,334
Bank-owned life insurance	163,519	162,668
Mortgage servicing rights	20,560	19,835
Marketable Securities, Equity Securities	5,698	0
Liabilities:
Demand, interest checking and money market accounts	5,886,893	5,658,994
Regular savings	1,637,814	1,557,500
Certificates of deposit	994,616	947,517
FHLB advances at fair value	192,195	202
Other borrowings	101,844	95,860
Junior subordinated debentures at fair value	112,516	98,707
Interest rate swaps [Member] | Carrying Value
Assets:
Derivatives:	4,592	5,083
Liabilities:
Derivatives:	4,592	5,083
Interest rate swaps [Member] | Estimated Fair Value
Assets:
Derivatives:	4,592	5,083
Liabilities:
Derivatives:	4,592	5,083
Interest Rate Forward Sales Commitments [Member] | Carrying Value
Assets:
Derivatives:	683	523
Liabilities:
Derivatives:	260	201
Interest Rate Forward Sales Commitments [Member] | Estimated Fair Value
Assets:
Derivatives:	683	523
Liabilities:
Derivatives:	260	201
Fair Value, Inputs, Level 2 [Member] | Carrying Value
Assets:
Securities—held-to-maturity	259,204	256,793
Fair Value, Inputs, Level 2 [Member] | Estimated Fair Value
Assets:
Securities—held-to-maturity	257,477	258,710
Fair Value, Inputs, Level 3 [Member] | Carrying Value
Assets:
Securities—held-to-maturity	3,441	3,478
Fair Value, Inputs, Level 3 [Member] | Estimated Fair Value
Assets:
Securities—held-to-maturity	$ 3,441	$ 3,478

XML

FAIR VALUE OF FINANCIAL INSTRUMENTS (Assets and Liabilities Measured on a Recurring Basis) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—trading	$ 25,574	$ 22,318
Securities—available-for-sale	1,406,505	919,485
Advances from FHLB	192,195	202
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—trading	25,574	22,318
Securities—available-for-sale	1,406,505	919,485
Total assets	1,580,786	979,801
Junior subordinated debentures net of unamortized deferred issuance costs at fair value	112,516	98,707
Total liabilities	117,368	103,991
Recurring [Member] | Interest rate lock and forward sale commitments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	683	5,083
Derivative liabilities	260	5,083
Recurring [Member] | Interest rate swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	4,592	523
Derivative liabilities	4,592	201
Recurring [Member] | U.S. Government and agency obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	143,306	72,466
Recurring [Member] | Municipal bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—trading	100	100
Securities—available-for-sale	68,958	68,733
Recurring [Member] | Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	6,112	5,393
Recurring [Member] | TPS and TRUP CDOs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—trading	25,474	22,058
Recurring [Member] | Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	1,160,413	739,557
Recurring [Member] | Asset-backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	27,716	27,758
Recurring [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—trading		160
Securities—available-for-sale		5,578
Recurring [Member] | Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	137,734	32,392
Recurring [Member] | Securities (Assets) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable Securities, Equity Securities	5,698
Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—trading	0	0
Securities—available-for-sale	0	0
Total assets	0	0
Junior subordinated debentures net of unamortized deferred issuance costs at fair value	0	0
Total liabilities	0	0
Recurring [Member] | Level 1 [Member] | Interest rate lock and forward sale commitments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Recurring [Member] | Level 1 [Member] | Interest rate swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Recurring [Member] | Level 1 [Member] | U.S. Government and agency obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	0	0
Recurring [Member] | Level 1 [Member] | Municipal bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—trading	0	0
Securities—available-for-sale	0	0
Recurring [Member] | Level 1 [Member] | Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	0	0
Recurring [Member] | Level 1 [Member] | TPS and TRUP CDOs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—trading	0	0
Recurring [Member] | Level 1 [Member] | Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	0	0
Recurring [Member] | Level 1 [Member] | Asset-backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	0	0
Recurring [Member] | Level 1 [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—trading		0
Securities—available-for-sale		0
Recurring [Member] | Level 1 [Member] | Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	0	0
Recurring [Member] | Level 1 [Member] | Securities (Assets) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable Securities, Equity Securities	0
Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—trading	100	260
Securities—available-for-sale	1,406,505	919,485
Total assets	1,555,312	957,743
Junior subordinated debentures net of unamortized deferred issuance costs at fair value	0	0
Total liabilities	4,852	5,284
Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest rate lock and forward sale commitments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	683	5,083
Derivative liabilities	260	5,083
Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest rate swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	4,592	523
Derivative liabilities	4,592	201
Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | U.S. Government and agency obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	143,306	72,466
Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Municipal bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—trading	100	100
Securities—available-for-sale	68,958	68,733
Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	6,112	5,393
Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | TPS and TRUP CDOs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—trading	0	0
Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	1,160,413	739,557
Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Asset-backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	27,716	27,758
Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—trading		160
Securities—available-for-sale		5,578
Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	137,734	32,392
Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Securities (Assets) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable Securities, Equity Securities	5,698
Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—trading	25,474	22,058
Securities—available-for-sale	0	0
Total assets	25,474	22,058
Junior subordinated debentures net of unamortized deferred issuance costs at fair value	112,516	98,707
Total liabilities	112,516	98,707
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest rate lock and forward sale commitments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest rate swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | U.S. Government and agency obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	0	0
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Municipal bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—trading	0	0
Securities—available-for-sale	0	0
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	0	0
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | TPS and TRUP CDOs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—trading	25,474	22,058
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	0	0
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Asset-backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	0	0
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—trading		0
Securities—available-for-sale		0
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	0	$ 0
Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Securities (Assets) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable Securities, Equity Securities	$ 0

XML

FAIR VALUE OF FINANCIAL INSTRUMENTS (Valuation Technique) (Details) - Fair Value, Inputs, Level 3 [Member]	3 Months Ended			12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2015	Dec. 31, 2017
Junior Subordinated Debt [Member] | Discounted cash flows [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate, Description of Variable Rate Basis		three-month LIBOR
Fair Value Inputs, Discount Rate, Basis Spread on Variable Rate Basis	4.00%
Junior Subordinated Debt [Member] | Weighted Average [Member] | Discounted cash flows [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Discount rate	6.31%			6.69%
Corporate Bonds (TPS securities) [Member] | Weighted Average [Member] | Discounted cash flows [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Discount rate	6.31%			6.69%
Impaired Loans [Member] | Weighted Average [Member] | discount to appraised value [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
fair value inputs, discount to appraised value	0.085
Impaired Loans [Member] | Weighted Average [Member] | Market Approach Valuation Technique [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Discount rate	0.00%
Impaired Loans [Member] | Minimum [Member] | Market Approach Valuation Technique [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Discount rate				0.00%
Impaired Loans [Member] | Maximum [Member] | Market Approach Valuation Technique [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Discount rate				0.00%
Real Estate Owned [Member] | Weighted Average [Member] | discount to appraised value [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
fair value inputs, discount to appraised value	0.61			0.42
Real Estate Owned [Member] | Minimum [Member] | Discounted cash flows [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Discount rate	17.00%			0.00%
Real Estate Owned [Member] | Maximum [Member] | Discounted cash flows [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Discount rate	42.00%			45.00%

XML

FAIR VALUE OF FINANCIAL INSTRUMENTS (Unobservable Inputs Reconciliation) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Junior Subordinated Debt [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 98,707	$ 95,200
Liabilities (gains) losses	13,809	840
Ending balance	112,516	96,040
TPS Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	22,058	21,143
Assets gains (losses), including OTTI	3,416	218
Ending balance	$ 25,474	$ 21,361

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FAIR VALUE OF FINANCIAL INSTRUMENTS (Assets Measured on Nonrecurring Basis) (Details) - Nonrecurring [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ (500)	$ (6,535)
REO	328	360
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
REO	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
REO	0	0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	(500)	(6,535)
REO	328	360
Gains (losses) resulting from nonrecurring fair value adjustments	(160)	(50)
Real Estate [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gains (losses) resulting from nonrecurring fair value adjustments	$ (160)	$ (50)

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INCOME TAXES AND DEFERRED TAXES INCOME TAXES AND DEFERRED TAXES (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Tax credit investments	$ 9,223		$ 7,311
Unfunded commitments—tax credit investments	5,483		$ 4,417
Tax credits and other tax benefits recognized	364	$ 285
Tax credit amortization expense included in provision for income taxes	$ 288	$ 199

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CALCULATION OF WEIGHTED AVERAGE SHARES OUTSTANDING FOR EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Earnings Per Share [Abstract]
Net income	$ 28,790	$ 23,793	$ 60,776
Basic weighted average shares outstanding	32,397,568	32,933,444
Plus unvested restricted stock	118,888	118,015
Diluted weighted shares outstanding	32,516,456	33,051,459
Earnings per common share
Basic	$ 0.89	$ 0.72
Diluted	$ 0.89	$ 0.72

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CALCULATION OF WEIGHTED AVERAGE SHARES OUTSTANDING FOR EARNINGS PER SHARE - Textuals (Details) - Warrant [Member] - Common Stock [Member] $ in Millions	Mar. 31, 2018 USD ($) shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Warrants outstanding | $	$ 18.6
Warrant [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Warrants outstanding, number of shares | shares	243,998

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STOCK-BASED COMPENSATION PLANS (Details) - USD ($) $ in Millions	3 Months Ended		47 Months Ended	71 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2018
Restricted Stock Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Expense	$ 1.3	$ 1.1
Compensation Cost Not yet Recognized	$ 6.6		$ 6.6	$ 6.6
Compensation Cost Not yet Recognized, Period for Recognition	28 months
2012 Restricted Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares Authorized	300,000		300,000	300,000
2012 Restricted Stock Plan [Member] | Restricted Stock Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Vesting Period	3 years
Award Expiration Period	10 years
Restricted stock granted				270,467
Restricted stock grants, shares vested				253,865
Restricted stock grants, shares non-vested	16,602		16,602	16,602
2014 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares Authorized	900,000		900,000	900,000
2014 Omnibus Incentive Plan [Member] | Restricted Stock Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock granted			346,914
Restricted stock grants, shares vested			123,885
2014 Omnibus Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock granted			34,975
Restricted stock grants, shares vested			26,154

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COMMITMENTS AND CONTINGENCIES (Commitments Without Recorded Liability) (Details)	3 Months Ended
	Mar. 31, 2018 USD ($) location	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($)
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Reserve for Unfunded Loan Commitments	$ 2,400,000		$ 2,400,000
Number of Properties Subject to Non-cancelable Operating Leases | location	107
Mortgage loan applications, day interest rate is locked	45 days
Minimum [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Mortgage loan applications, day interest rate is locked	30 days
Maximum [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Mortgage loan applications, day interest rate is locked	60 days
Commitments to extend credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	$ 2,386,614,000		2,300,593,000
Standby letters of credit and financial guarantees [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	13,958,000		14,579,000
Commitments to originate loans [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	66,479,000		56,030,000
Risk Participation Agreement [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	4,141,000		11,451,000
Commitments to originate loans held for sale [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	47,848,000		43,502,000
Commitments to sell loans secured by one- to four residential properties [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	38,409,000		33,069,000
Counterparty default losses on forward contracts	0	$ 0
Commitments to sell securities related to mortgage banking activities [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	107,500,000		$ 57,000,000
Counterparty default losses on forward contracts	$ 0	$ 0

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DERIVATIVES AND HEDGING (Derivatives Designated as Hedging, by Balance Sheet Location) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	$ 4,592	$ 5,083
Liability Derivatives, Fair Value	4,592	5,083
Interest rate swaps [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	4,592	5,083
Liability Derivatives, Fair Value	4,592	5,083
Interest rate swaps [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional/Contract Amount	4,257	4,350
Liability Derivatives, Notional/Contract Amount	4,257	4,350
Interest rate swaps [Member] | Designated as Hedging Instrument [Member] | Loans Receivable [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	355	447
Interest rate swaps [Member] | Designated as Hedging Instrument [Member] | Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	$ 355	$ 447

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DERIVATIVES AND HEDGING (Derivatives Not Designated as Hedging, by Balance Sheet Location) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	$ 4,592	$ 5,083
Liability Derivatives, Fair Value	4,592	5,083
Interest rate swaps [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	4,592	5,083
Liability Derivatives, Fair Value	4,592	5,083
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional/Contract Amount	401,835	357,855
Liability Derivatives, Notional/Contract Amount	337,176	345,810
Not Designated as Hedging Instrument [Member] | Other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	4,919	5,159
Not Designated as Hedging Instrument [Member] | Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	4,496	4,837
Not Designated as Hedging Instrument [Member] | Interest rate swaps [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional/Contract Amount	272,627	285,047
Liability Derivatives, Notional/Contract Amount	272,627	285,047
Not Designated as Hedging Instrument [Member] | Interest rate swaps [Member] | Other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	4,236	4,636
Not Designated as Hedging Instrument [Member] | Interest rate swaps [Member] | Loans Receivable [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	381	499
Not Designated as Hedging Instrument [Member] | Interest rate swaps [Member] | Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	4,236	4,636
Not Designated as Hedging Instrument [Member] | Mortgage loan commitments [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional/Contract Amount	30,799	29,739
Liability Derivatives, Notional/Contract Amount	17,049	13,763
Not Designated as Hedging Instrument [Member] | Mortgage loan commitments [Member] | Other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	294	225
Not Designated as Hedging Instrument [Member] | Mortgage loan commitments [Member] | Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	153	153
Not Designated as Hedging Instrument [Member] | Forward Contracts [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional/Contract Amount	98,409	43,069
Liability Derivatives, Notional/Contract Amount	47,500	47,000
Not Designated as Hedging Instrument [Member] | Forward Contracts [Member] | Other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	389	298
Not Designated as Hedging Instrument [Member] | Forward Contracts [Member] | Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	$ 107	$ 48

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DERIVATIVES AND HEDGING (Gain (Loss) On Derivatives Not Designated in Hedging Relationship) (Details) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income, net	$ 57	$ (113)
Mortgage loan commitments [Member] | Mortgage banking operations [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income, net	68	361
Forward sales contracts [Member] | Mortgage banking operations [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income, net	$ (11)	$ (474)

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DERIVATIVES AND HEDGING (Narrative) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative net liability position	$ 0.8	$ 3.7
Collateral posted	$ 17.1	$ 16.9

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DERIVATIVES AND HEDGING (Derivative Offsetting) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Offsetting Derivative Assets [Abstract]
Derivative Assets, Gross Amounts Recognized	$ 4,592	$ 5,083
Derivative Assets, Amounts offsett in the Statement of Financial Condition	0	0
Derivative Assets, Net Amounts in the Statement of Financial Condition	4,592	5,083
Derivative Assets, Netting Adjustment Per Applicable Master Netting Agreements	(123)	(656)
Derivative Assets, Fair Value of Financial Collateral in the Statement of Financial Condiation	0	0
Derivative Assets, Net Amount	4,469	4,427
Offsetting Derivative Liabilities [Abstract]
Derivative Liabilities, Gross Amounts Recognized	4,592	5,083
Derivative Liabilities, Amounts offset in the Statement of Financial Condition	0	0
Derivative Liabilities, Net Amounts of the Statement of Financial Condition	4,592	5,083
Derivative Liabilities, Net Adjustment Per Applicable Master Netting Agreements	(123)	(656)
Derivative Liabilities, Fair Value of Financial Collateral in the Statement of Financial Condition	(767)	(3,467)
Derivative Liabilities, Net Amount	3,702	960
Interest rate swaps [Member]
Offsetting Derivative Assets [Abstract]
Derivative Assets, Gross Amounts Recognized	4,592	5,083
Derivative Assets, Amounts offsett in the Statement of Financial Condition	0	0
Derivative Assets, Net Amounts in the Statement of Financial Condition	4,592	5,083
Derivative Assets, Netting Adjustment Per Applicable Master Netting Agreements	(123)	(656)
Derivative Assets, Fair Value of Financial Collateral in the Statement of Financial Condiation	0	0
Derivative Assets, Net Amount	4,469	4,427
Offsetting Derivative Liabilities [Abstract]
Derivative Liabilities, Gross Amounts Recognized	4,592	5,083
Derivative Liabilities, Amounts offset in the Statement of Financial Condition	0	0
Derivative Liabilities, Net Amounts of the Statement of Financial Condition	4,592	5,083
Derivative Liabilities, Net Adjustment Per Applicable Master Netting Agreements	(123)	(656)
Derivative Liabilities, Fair Value of Financial Collateral in the Statement of Financial Condition	(767)	(3,467)
Derivative Liabilities, Net Amount	$ 3,702	$ 960

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REVENUE FROM CONTRACTS WITH CUSTOMERS (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenue from Contract with Customer [Abstract]
Fees and Commissions, Depositor Accounts	$ 4,320	$ 4,062
Fees and Commissions, Credit and Debit Cards	7,320	6,538
Debit and Credit Card Expense	(1,970)	(1,687)
Merchant Discount Fees	2,261	2,187
Merchant Services Expenses	(1,804)	(1,797)
Other Service Charges	1,169	1,086
Total Deposit Fees and Other Service Charges	$ 11,296	$ 10,389