Banner (BANR) 10-Q 5 May 21 2021 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information Document - shares	3 Months Ended
	Mar. 31, 2021	Apr. 30, 2021
Document and Entity Information [Abstract]
Title of 12(b) Security	Common Stock, par value $.01 per share
Trading Symbol	BANR
Security Exchange Name	NASDAQ
Entity Registrant Name	BANNER CORPORATION
Entity Incorporation, State or Country Code	WA
Entity Tax Identification Number	91-1691604
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2021
Document Transition Report	false
Entity File Number	000-26584
Amendment Flag	false
Entity Central Index Key	0000946673
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		34,797,764
Entity Filer Category	Large Accelerated Filer
Entity Shell Company	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Small Business	false
Entity Emerging Growth Company	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Entity Address, Address Line One	10 South First Avenue
Entity Address, City or Town	Walla Walla
Entity Address, State or Province	WA
Entity Address, Postal Zip Code	99362
City Area Code	509
Local Phone Number	527-3636

CONSOLIDATED STATEMENTS OF FINA

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION - USD ($) $ in Thousands		Mar. 31, 2021	Dec. 31, 2020
ASSETS
Cash and due from banks		$ 296,184	$ 311,899
Interest bearing deposits		1,353,743	922,284
Total cash and cash equivalents		1,649,927	1,234,183
Securities—trading		25,039	24,980
Securities—available-for-sale, amortized cost $2,996,902 and $2,256,189, respectively		2,989,760	2,322,593
Securities—held-to-maturity, net of allowance for credit losses of $98 and $94, respectively, fair value $459,595 and $448,681, respectively		441,857	421,713
Total securities		3,456,656	2,769,286
Federal Home Loan Bank (FHLB) stock		14,001	16,358
Loans held for sale (includes $60.0 million and $133.6 million, at fair value, respectively)		135,263	243,795
Loans receivable		9,947,697	9,870,982
Allowance for credit losses - loans		156,054	167,279
Net loans receivable		9,791,643	9,703,703
Accrued interest receivable		49,214	46,617
Real estate owned (REO), held for sale, net		340	816
Property and equipment, net		161,268	164,556
Goodwill		373,121	373,121
Other intangibles, net		19,715	21,426
Bank-owned life insurance (BOLI)		191,388	191,830
Deferred tax assets, net		83,178	65,742
Operating lease right-of-use assets		56,217	55,367
Other assets		137,861	144,823
Total assets		16,119,792	15,031,623
Deposits:
Non-interest-bearing		5,994,693	5,492,924
Interest-bearing transaction and savings accounts		6,647,196	6,159,052
Interest-bearing certificates	[1]	906,978	915,320
Total deposits		13,548,867	12,567,296
Advances from FHLB		100,000	150,000
Other borrowings		216,260	184,785
Subordinated notes, net		98,290	98,201
Junior subordinated debentures at fair value (issued in connection with Trust Preferred Securities)		117,248	116,974
Operating lease liabilities		59,884	59,343
Accrued expenses and other liabilities		313,801	143,300
Deferred compensation		46,625	45,460
Total liabilities		14,500,975	13,365,359
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, 2021 and December 31, 2020		0	0
Retained earnings		279,582	247,316
Carrying value of shares held in trust for stock-based compensation plans		(7,614)	(7,636)
Liability for common stock issued to stock related compensation plans		7,614	7,636
Accumulated other comprehensive income		12,966	69,069
Total shareholders’ equity		1,618,817	1,666,264
Total liabilities and shareholders’ equity		16,119,792	15,031,623
Voting Common Stock [Member]
SHAREHOLDERS’ EQUITY
Common stock and paid in capital		1,326,269	1,349,879
Nonvoting Common Stock [Member]
SHAREHOLDERS’ EQUITY
Common stock and paid in capital		$ 0	$ 0
[1]	Certificates of deposit include $34,000 and $58,000 of acquisition premiums at March 31, 2021 and December 31, 2020, respectively.

CONSOLIDATED STATEMENTS OF FI_2

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
ASSETS
Securities—trading, amortized cost basis	$ 27,203	$ 27,203
Securities—available-for-sale, amortized cost basis	2,996,902	2,256,189
Allowance for Credit Losses	(98)	94
Securities—held-to-maturity, fair value	$ 459,595	$ 448,681
SHAREHOLDERS’ EQUITY
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	500,000	500,000
Preferred Stock, Shares Outstanding	0	0
Securities—trading	$ 25,039	$ 24,980
Securities—available-for-sale	2,989,760	2,322,593
Securities—held-to-maturity, net of allowance for credit losses of $98 and $94, respectively, fair value $459,595 and $448,681, respectively	$ 441,857	$ 421,713
Voting Common Stock [Member]
SHAREHOLDERS’ EQUITY
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	50,000,000	50,000,000
Common Stock, Shares, Issued	34,735,343	35,159,200
Common Stock, Shares, Outstanding	34,735,343	35,159,200
Nonvoting Common Stock [Member]
SHAREHOLDERS’ EQUITY
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	5,000,000	5,000,000
Common Stock, Shares, Issued	0	0
Common Stock, Shares, Outstanding	0	0
Recurring [Member]
SHAREHOLDERS’ EQUITY
Securities—available-for-sale	$ 2,989,760	$ 2,322,593
Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
SHAREHOLDERS’ EQUITY
Securities—available-for-sale	2,989,760	2,322,593
Loans [Member] | Recurring [Member]
ASSETS
Loans Held-for-sale, Fair Value Disclosure	59,993	133,554
Loans [Member] | Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
ASSETS
Loans Held-for-sale, Fair Value Disclosure	$ 59,993	$ 133,554

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
INTEREST INCOME:
Loans receivable	$ 108,924	$ 118,926
Mortgage-backed securities	9,371	9,137
Securities and cash equivalents	6,226	3,602
Total interest income	124,521	131,665
INTEREST EXPENSE:
Deposits	3,609	8,750
FHLB advances	934	2,064
Other borrowings	109	116
Subordinated debt	2,208	1,477
Total interest expense	6,860	12,407
Net interest income	117,661	119,258
(RECAPTURE)/PROVISION FOR CREDIT LOSSES	(9,251)	23,470
Net interest income after (recapture)/provision for credit losses	126,912	95,788
NON-INTEREST INCOME:
Deposit fees and other service charges	8,939	9,803
Mortgage banking operations	11,440	10,191
Bank-owned life insurance (BOLI)	1,307	1,050
Miscellaneous	2,042	2,639
Other operating income	23,728	23,683
Net gain on sale of securities	485	78
Net change in valuation of financial instruments carried at fair value	59	(4,596)
Total non-interest income	24,272	19,165
NON-INTEREST EXPENSE:
Salary and employee benefits	64,819	59,908
Less capitalized loan origination costs	(9,696)	(5,806)
Occupancy and equipment	12,989	13,107
Information/computer data services	6,203	5,810
Payment and card processing expenses	4,326	4,240
Professional and legal expenses	3,328	1,919
Advertising and marketing	1,263	1,827
Deposit insurance expense	1,533	1,635
State/municipal business and use taxes	1,065	984
REO operations, net	(242)	100
Amortization of core deposit intangibles	1,711	2,001
Miscellaneous	5,509	6,357
Noninterest Operating Expense, Before COVID-19 and Acquisition Related Costs	92,808	92,082
COVID-19 Expenses	148	239
Acquisition-related costs	571	1,142
Total non-interest expense	93,527	93,463
Income before provision for income taxes	57,657	21,490
PROVISION FOR INCOME TAXES	10,802	4,608
NET INCOME	$ 46,855	$ 16,882
Earnings per common share:
Basic	$ 1.34	$ 0.48
Diluted	1.33	0.47
Cumulative dividends declared per common share	$ 0.41	$ 0.41
Weighted average number of common shares outstanding, Basic	34,973,383	35,463,541
Weighted average number of common shares outstanding, Diluted	35,303,483	35,640,463

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 46,855	$ 16,882
OTHER COMPREHENSIVE INCOME, NET OF INCOME TAXES:
Unrealized holding (loss) gain on available-for-sale securities arising during the period	(73,107)	42,178
Income tax benefit (expense) related to available-for-sale securities unrealized holding (loss) gain	17,546	(10,123)
Reclassification for net gain on available-for-sale securities realized in earnings	(439)	(78)
Income tax expense related to available-for-sale securities realized in earnings	105	19
Changes in fair value of junior subordinated debentures related to instrument specific credit risk	(274)	19,509
Income tax benefit (expense) related to junior subordinated debentures	66	(4,682)
Other comprehensive (loss) income	(56,103)	46,823
COMPREHENSIVE (LOSS) INCOME	$ (9,248)	$ 63,705

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock [Member]	Common Stock and Paid in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance, beginning of the period at Dec. 31, 2019	$ 1,594,034		$ 1,373,940	$ 186,838	$ 33,256
Balance, beginning of the period (in shares) at Dec. 31, 2019		35,751,576
Increase (Decrease) in Stockholders' Equity [Roll Forward]
New credit standard (ASC 326) - impact in year of adoption	11,215			11,215
Net income	16,882			16,882
Other comprehensive income, net of income tax	46,823				46,823
Accrual of dividends on common stock	(14,583)			(14,583)
Amortization of stock-based compensation related to restricted stock grants, net of shares surrendered	1,534		1,534
Amortization of stock-based compensation related to restricted stock grants, net of shares surrendered (in shares)		(24,337)
Repurchase of common stock	(31,775)		(31,775)
Repurchase of common stock (in shares)		(624,780)
Balance, end of the period at Mar. 31, 2020	$ 1,601,700		1,343,699	177,922	80,079
Balance, end of the period (in shares) at Mar. 31, 2020		35,102,459
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative dividends declared per common share	$ 0.41
Net income	$ 23,541			23,541
Other comprehensive income, net of income tax	(1,520)				(1,520)
Accrual of dividends on common stock	(15)			(15)
Amortization of stock-based compensation related to restricted stock grants, net of shares surrendered	1,397		1,397
Amortization of stock-based compensation related to restricted stock grants, net of shares surrendered (in shares)		55,440
Balance, end of the period at Jun. 30, 2020	1,625,103		1,345,096	201,448	78,559
Balance, end of the period (in shares) at Jun. 30, 2020		35,157,899
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	36,548			36,548
Other comprehensive income, net of income tax	(2,601)				(2,601)
Accrual of dividends on common stock	(15,037)			(15,037)
Amortization of stock-based compensation related to restricted stock grants, net of shares surrendered	2,516		2,516
Amortization of stock-based compensation related to restricted stock grants, net of shares surrendered (in shares)		669
Balance, end of the period at Sep. 30, 2020	$ 1,646,529		1,347,612	222,959	75,958
Balance, end of the period (in shares) at Sep. 30, 2020		35,158,568
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative dividends declared per common share	$ 0.41
Net income	$ 38,957			38,957
Other comprehensive income, net of income tax	(6,889)				(6,889)
Accrual of dividends on common stock	(14,600)			(14,600)
Amortization of stock-based compensation related to restricted stock grants, net of shares surrendered	2,267		2,267
Amortization of stock-based compensation related to restricted stock grants, net of shares surrendered (in shares)		632
Balance, end of the period at Dec. 31, 2020	$ 1,666,264		1,349,879	247,316	69,069
Balance, end of the period (in shares) at Dec. 31, 2020		35,159,200
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative dividends declared per common share	$ 0.41
Net income	$ 46,855			46,855
Other comprehensive income, net of income tax	(56,103)				(56,103)
Accrual of dividends on common stock	(14,589)			(14,589)
Amortization of stock-based compensation related to restricted stock grants, net of shares surrendered	1,714		1,714
Amortization of stock-based compensation related to restricted stock grants, net of shares surrendered (in shares)		76,143
Repurchase of common stock	(25,324)		(25,324)
Repurchase of common stock (in shares)		(500,000)
Balance, end of the period at Mar. 31, 2021	$ 1,618,817		$ 1,326,269	$ 279,582	$ 12,966
Balance, end of the period (in shares) at Mar. 31, 2021		34,735,343
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative dividends declared per common share	$ 0.41

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Statement of Stockholders' Equity [Abstract]
Cumulative dividends declared per common share	$ 0.41	$ 0.41	$ 0.41		$ 0.41
New credit standard (ASC 326) - impact in year of adoption					$ (11,215)
NET INCOME	$ 46,855	$ 38,957	$ 36,548	$ 23,541	16,882
Other comprehensive income, net of income tax	(56,103)	(6,889)	(2,601)	(1,520)	46,823
Accrual of dividends on common stock	(14,589)	(14,600)	(15,037)	(15)	(14,583)
Amortization of stock-based compensation related to restricted stock grants, net of shares surrendered	1,714	2,267	2,516	1,397	1,534
Repurchase of common stock	(25,324)				(31,775)
Total shareholders’ equity	$ 1,618,817	$ 1,666,264	$ 1,646,529	$ 1,625,103	$ 1,601,700	$ 1,594,034
Cumulative dividends declared per common share	$ 0.41	$ 0.41	$ 0.41		$ 0.41
Common Stock [Member]
Amortization of stock-based compensation related to restricted stock grants, net of shares surrendered (in shares)	76,143	632	669	55,440	(24,337)
Stock Repurchased and Retired During Period, Shares	(500,000)				(624,780)
Shares, Outstanding	34,735,343	35,159,200	35,158,568	35,157,899	35,102,459	35,751,576
Common Stock and Paid in Capital [Member]
Amortization of stock-based compensation related to restricted stock grants, net of shares surrendered	$ 1,714	$ 2,267	$ 2,516	$ 1,397	$ 1,534
Repurchase of common stock	(25,324)				(31,775)
Total shareholders’ equity	1,326,269	1,349,879	1,347,612	1,345,096	1,343,699	$ 1,373,940
Retained Earnings [Member]
New credit standard (ASC 326) - impact in year of adoption					(11,215)
NET INCOME	46,855	38,957	36,548	23,541	16,882
Accrual of dividends on common stock	(14,589)	(14,600)	(15,037)	(15)	(14,583)
Total shareholders’ equity	279,582	247,316	222,959	201,448	177,922	186,838
Accumulated Other Comprehensive Income (Loss) [Member]
Other comprehensive income, net of income tax	(56,103)	(6,889)	(2,601)	(1,520)	46,823
Total shareholders’ equity	$ 12,966	$ 69,069	$ 75,958	$ 78,559	$ 80,079	$ 33,256

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Jun. 30, 2020	Mar. 31, 2020
OPERATING ACTIVITIES:
Net income	$ 46,855	$ 38,957	$ 23,541	$ 16,882
Adjustments to reconcile net income to net cash provided from operating activities:
Depreciation	4,411			4,614
Deferred income/expense and capitalized servicing rights, net of amortization	(7,203)			(1,129)
Amortization of core deposit intangibles	1,711			2,001
Gain on sale of securities, net	(485)			(78)
Net change in valuation of financial instruments carried at fair value	(59)			4,596
(Increase) decrease in deferred taxes	17,436			(16,507)
Increase in current taxes payable	9,506			2,067
Stock-based compensation	2,152			1,872
Net change in cash surrender value of BOLI	(1,002)			(1,041)
Gain on sale of loans, excluding capitalized servicing rights	(9,487)			(8,363)
(Gain) loss on disposal of real estate held for sale and property and equipment, net	(298)			444
(Recapture) provision for credit losses	(9,251)			23,470
Origination of loans held for sale	(301,393)			(296,712)
Proceeds from sales of loans held for sale	419,412			333,094
Net change in:
Other assets	20,319			(51,061)
Other liabilities	164,729			5,400
Net cash provided from operating activities	322,481			52,563
INVESTING ACTIVITIES:
Purchases of securities—available-for-sale	(1,225,723)			(143,973)
Principal repayments and maturities of securities—available-for-sale	434,651			82,760
Proceeds from sales of securities—available-for-sale	48,784			44,509
Purchases of securities—held-to-maturity	(31,170)			(206,155)
Principal repayments and maturities of securities—held-to-maturity	9,982			3,786
Purchases of equity securities	(4,750)			0
Proceeds from sales of equity securities	4,796			0
Loan originations, net of principal repayments	(77,834)			16,646
Proceeds from sales of other loans	8,367			5,751
Purchases of property and equipment	(2,334)			(3,086)
Proceeds from sale of real estate held for sale and sale of other property	1,999			877
Proceeds from FHLB stock repurchase program	2,358			47,840
Purchase of FHLB stock	0			(39,745)
Other	1,418			(72)
Net cash used in investing activities	(829,456)			(190,862)
FINANCING ACTIVITIES:
Increase in deposits, net	981,571			400,895
Repayment of long term FHLB advances	(50,000)			0
Repayment of overnight and short term FHLB advances, net	0			(203,000)
Increase in other borrowings, net	31,474			10,289
Cash dividends paid	(14,565)			(50,505)
Taxes paid related to net share settlement of equity awards	437			339
Cash paid for the repurchase of common stock	25,324			31,775
Net cash provided from financing activities	922,719			125,565
NET CHANGE IN CASH AND CASH EQUIVALENTS	415,744			(12,734)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	1,234,183		$ 295,001	307,735
CASH AND CASH EQUIVALENTS, END OF PERIOD	1,649,927	$ 1,234,183		295,001
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Interest paid in cash	5,829			13,014
Tax refunds received (paid)	100			(29)
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	0			1,588
Dividends Payable	$ 1,381			$ 15,277

BASIS OF PRESENTATION AND SIGNI

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES	3 Months Ended
	Mar. 31, 2021
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 subsidiary, Banner Bank (the Bank). 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, 2021 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 note disclosures 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 2020 Consolidated Financial Statements and/or schedules to conform to the 2021 presentation. Prior to the first quarter of 2021, the (recapture) provision for credit losses - unfunded loan commitment was recorded as non-interest expense, beginning in the first quarter of 2021 the (recapture) provision for credit losses - unfunded loan commitment is recorded as a component of the provision for credit losses. 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 credit losses, (iii) the valuation of financial assets and liabilities recorded at fair value (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 acquired and liabilities assumed 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, 2020 filed with the SEC (2020 Form 10-K). There have been no significant changes in our application of these accounting policies during the first three months of 2021. The information included in this Form 10-Q should be read in conjunction with our 2020 Form 10-K. Interim results are not necessarily indicative of results for a full year or any other interim period.

ACCOUNTING STANDARDS RECENTLY I

ACCOUNTING STANDARDS RECENTLY ISSUED OR ADOPTED	3 Months Ended
	Mar. 31, 2021
Accounting Changes and Error Corrections [Abstract]
ACCOUNTING STANDARDS RECENTLY ISSUED OR ADOPTED	ACCOUNTING STANDARDS RECENTLY ISSUED OR ADOPTED Reference Rate Reform (Topic 848) In March 2020, the Financial Accounting Standards Board (FASB) issued guidance within Accounting Standards Update (ASU) 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting , in response to the scheduled discontinuation of LIBOR on December 31, 2021. The amendments in this ASU provide optional guidance designed to provide relief from the accounting analysis and impacts that may otherwise be required for modifications to agreements (e.g., loans, debt securities, derivatives, borrowings) necessitated by reference rate reform. Since the issuance of this guidance, the publication cessation of U.S. dollar LIBOR has been extended to June 30, 2023. The following optional expedients for applying the requirements of certain Topics or Industry Subtopics in the Codification are permitted for contracts that are modified because of reference rate reform and that meet certain scope guidance: 1) modifications of contracts within the scope of Topics 310, Receivables, and 470, Debt, should be accounted for by prospectively adjusting the effective interest rate; 2) modifications of contracts within the scope of Topic 842, Leases, should be accounted for as a continuation of the existing contracts with no reassessments of the lease classification and the discount rate or remeasurements of lease payments that otherwise would be required under this Topic for modifications not accounted for as separate contracts; 3) modifications of contracts do not require an entity to reassess its original conclusion about whether that contract contains an embedded derivative that is clearly and closely related to the economic characteristics and risks of the host contract under Subtopic 815-15, Derivatives and Hedging- Embedded Derivatives; and 4) for other Topics or Industry Subtopics in the Codification, the amendments in this ASU also include a general principle that permits an entity to consider contract modifications due to reference rate reform to be an event that does not require contract remeasurement at the modification date or reassessment of a previous accounting determination. Upon adoption, an entity may make a one-time election to sell, transfer, or both sell and transfer debt securities classified as held to maturity that reference a rate affected by reference rate reform and that are classified as held to maturity before January 1, 2020. In January 2021, the FASB issued ASU 2021-01, Reference Rate Reform (Topic 848): Scope . This ASU clarifies that certain optional expedients and exceptions in Topic 848 for contract modifications and hedge accounting apply to derivatives that are affected by the discounting transition. The ASU also amends the expedients and exceptions in Topic 848 to capture the incremental consequences of the scope clarification and to tailor the existing guidance to derivative instruments affected by the discounting transition. The amendments in these ASUs are effective upon the issuance date of March 12, 2020 and once adopted will apply to contract modifications made and new hedging relationships entered into through December 31, 2022. The Company will be able to use the expedients in this guidance to manage through the transition away from LIBOR, specifically as they relate to loans and leases. The adoption of this accounting guidance is not expected to have a material impact on the Company’s Consolidated Financial Statements.

SECURITIES

SECURITIES	3 Months Ended
	Mar. 31, 2021
Investments, Debt and Equity Securities [Abstract]
SECURITIES	SECURITIES The amortized cost, gross unrealized gains and losses and estimated fair value of securities at March 31, 2021 and December 31, 2020 are summarized as follows (in thousands): March 31, 2021 Amortized Cost Fair Trading: Corporate bonds $ 27,203 $ 25,039 $ 27,203 $ 25,039 March 31, 2021 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Allowance for Credit Losses Fair Available-for-Sale: U.S. Government and agency obligations $ 62,922 $ 740 $ (816) $ — $ 62,846 Municipal bonds 287,685 14,378 (1,328) — 300,735 Corporate bonds 243,428 2,290 (290) — 245,428 Mortgage-backed or related securities 2,399,117 28,710 (50,824) — 2,377,003 Asset-backed securities 3,750 — (2) — 3,748 $ 2,996,902 $ 46,118 $ (53,260) $ — $ 2,989,760 March 31, 2021 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Allowance for Credit Losses Held-to-Maturity: U.S. Government and agency obligations $ 339 $ 6 $ — $ 345 $ — Municipal bonds 381,136 17,740 (1,481) 397,395 (61) Corporate bonds 3,190 — (7) 3,183 (37) Mortgage-backed or related securities 57,290 1,668 (286) 58,672 — $ 441,955 $ 19,414 $ (1,774) $ 459,595 $ (98) December 31, 2020 Amortized Cost Fair Trading: Corporate bonds $ 27,203 $ 24,980 $ 27,203 $ 24,980 December 31, 2020 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Allowance for Credit Losses Fair Value Available-for-Sale: U.S. Government and agency obligations $ 141,668 $ 1,002 $ (935) $ — $ 141,735 Municipal bonds 283,997 19,523 (2) — 303,518 Corporate bonds 219,086 2,762 (79) — 221,769 Mortgage-backed or related securities 1,602,033 45,179 (1,060) — 1,646,152 Asset-backed securities 9,405 77 (63) — 9,419 $ 2,256,189 $ 68,543 $ (2,139) $ — $ 2,322,593 December 31, 2020 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Allowance for Credit Losses Held-to-Maturity: U.S. Government and agency obligations $ 340 $ 7 $ — $ 347 $ — Municipal bonds 370,998 24,130 (94) 395,034 (59) Corporate bonds 3,222 — (12) 3,210 (35) Mortgage-backed or related securities 47,247 2,843 — 50,090 — $ 421,807 $ 26,980 $ (106) $ 448,681 $ (94) Accrued interest receivable on held-to-maturity debt securities was $2.7 million and $3.0 million as of March 31, 2021 and December 31, 2020, respectively, and was $8.2 million and $6.9 million on available-for-sale debt securities as of March 31, 2021 and December 31, 2020, respectively. Accrued interest receivable on securities is reported in accrued interest receivable on the Consolidated Statements of Financial Condition and is excluded from the calculation of the allowance for credit losses. At March 31, 2021 and December 31, 2020, the gross unrealized losses and the fair value for securities available-for-sale aggregated by the length of time that individual securities have been in a continuous unrealized loss position were as follows (in thousands): March 31, 2021 Less Than 12 Months 12 Months or More Total Fair Unrealized Losses Fair Unrealized Losses Fair Unrealized Losses Available-for-Sale: U.S. Government and agency obligations $ 3,090 $ (10) $ 43,952 $ (806) $ 47,042 $ (816) Municipal bonds 50,710 (1,232) 8,403 (96) 59,113 (1,328) Corporate bonds 24,406 (286) 996 (4) 25,402 (290) Mortgage-backed or related securities 863,848 (34,608) 501,048 (16,216) 1,364,896 (50,824) Asset-backed securities 3,748 (2) — — 3,748 (2) $ 945,802 $ (36,138) $ 554,399 $ (17,122) $ 1,500,201 $ (53,260) December 31, 2020 Less Than 12 Months 12 Months or More Total Fair Unrealized Losses Fair Unrealized Losses Fair Unrealized Losses Available-for-Sale: U.S. Government and agency obligations $ 3,126 $ (8) $ 50,603 $ (927) $ 53,729 $ (935) Municipal bonds 495 (2) — — 495 (2) Corporate bonds 3,586 (79) — — 3,586 (79) Mortgage-backed or related securities 181,871 (1,046) 2,337 (14) 184,208 (1,060) Asset-backed securities — — 5,676 (63) 5,676 (63) $ 189,078 $ (1,135) $ 58,616 $ (1,004) $ 247,694 $ (2,139) At March 31, 2021, there were 81 securities—available-for-sale with unrealized losses, compared to 54 at December 31, 2020. Management does not believe that any individual unrealized loss as of March 31, 2021 or December 31, 2020 resulted from credit loss. 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 months ended March 31, 2021 or 2020. There were no securities—trading in a nonaccrual status at March 31, 2021 or December 31, 2020. Net unrealized holding gains of $59,000 were recognized during the three months ended March 31, 2021 compared to $4.6 million of net unrealized holding losses recognized during the three months ended March 31, 2020. The following table presents gross gains and losses on sales of securities available-for-sale (in thousands): Three Months Ended 2021 2020 Available-for-Sale: Gross Gains $ 595 $ 78 Gross Losses (110) — Balance, end of the period $ 485 $ 78 There were no securities—available-for-sale in a nonaccrual status at March 31, 2021 or December 31, 2020. There were no sales of securities—held-to-maturity during the three months ended March 31, 2021 or 2020. There were no securities—held-to-maturity in a nonaccrual status or 30 days or more past due at March 31, 2021 or December 31, 2020. There was one sale of equity securities totaling $4.8 million during the three months ended March 31, 2021 with a resulting net gain of $46,000 and no sales of equity securities during the three months ended March 31, 2020. The amortized cost and estimated fair value of securities at March 31, 2021, 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, 2021 Trading Available-for-Sale Held-to-Maturity Amortized Fair Amortized Fair Amortized Fair Maturing in one year or less $ — $ — $ 158,605 $ 158,816 $ 5,609 $ 5,671 Maturing after one year through five years — — 178,983 187,427 54,888 57,069 Maturing after five years through ten years — — 680,138 675,201 33,435 35,387 Maturing after ten years through twenty years 27,203 25,039 276,682 285,450 152,353 155,651 Maturing after twenty years — — 1,702,494 1,682,866 195,670 205,817 $ 27,203 $ 25,039 $ 2,996,902 $ 2,989,760 $ 441,955 $ 459,595 The following table presents, as of March 31, 2021, investment securities which were pledged to secure borrowings, public deposits or other obligations as permitted or required by law (in thousands): March 31, 2021 Carrying Value Amortized Cost Fair Purpose or beneficiary: State and local governments public deposits $ 206,699 $ 205,752 $ 218,842 Interest rate swap counterparties 28,385 27,749 28,550 Repurchase agreements 245,018 250,440 245,018 Other 2,588 2,588 2,648 Total pledged securities $ 482,690 $ 486,529 $ 495,058 The Company monitors the credit quality of held-to-maturity debt securities through the use of credit rating. Credit ratings are reviewed and updated quarterly. The following table summarizes the amortized cost of held-to-maturity debt securities by credit rating at March 31, 2021 and December 31, 2020 (in thousands): March 31, 2021 U.S. Government and agency obligations Municipal bonds Corporate bonds Mortgage-backed or related securities Total AAA/AA/A $ — $ 349,687 $ 500 $ — $ 350,187 Not Rated 339 31,449 2,690 57,290 91,768 $ 339 $ 381,136 $ 3,190 $ 57,290 $ 441,955 December 31, 2020 U.S. Government and agency obligations Municipal bonds Corporate bonds Mortgage-backed or related securities Total AAA/AA/A $ — $ 349,123 $ 500 $ — $ 349,623 Not Rated 340 21,875 2,722 47,247 72,184 $ 340 $ 370,998 $ 3,222 $ 47,247 $ 421,807 The following table presents the activity in the allowance for credit losses for held-to-maturity debt securities by major type for the three months ended March 31, 2021 and March 31, 2020 (in thousands): For the Three Months Ended March 31, 2021 U.S. Government and agency obligations Municipal bonds Corporate bonds Mortgage-backed or related securities Total Allowance for credit losses - securities Beginning Balance $ — $ 59 $ 35 $ — $ 94 Provision for credit losses — 2 2 — 4 Ending Balance $ — $ 61 $ 37 $ — $ 98

LOANS RECEIVABLE AND THE ALLOWA

LOANS RECEIVABLE AND THE ALLOWANCE FOR CREDIT LOSSES	3 Months Ended
	Mar. 31, 2021
Receivables [Abstract]
LOANS RECEIVABLE AND THE ALLOWANCE FOR LOAN LOSSES	LOANS RECEIVABLE AND THE ALLOWANCE FOR CREDIT LOSSES - LOANS The following table presents the loans receivable at March 31, 2021 and December 31, 2020 by class (dollars in thousands). March 31, 2021 December 31, 2020 Amount Percent of Total Amount Percent of Total Commercial real estate: Owner-occupied $ 1,045,656 10.5 % $ 1,076,467 10.9 % Investment properties 1,931,805 19.4 1,955,684 19.8 Small balance CRE 639,330 6.4 573,849 5.8 Multifamily real estate 433,775 4.3 428,223 4.4 Construction, land and land development: Commercial construction 199,037 2.0 228,937 2.3 Multifamily construction 305,694 3.1 305,527 3.1 One- to four-family construction 542,840 5.5 507,810 5.1 Land and land development 266,730 2.7 248,915 2.5 Commercial business: Commercial business (1) 2,376,594 23.9 2,178,461 22.1 Small business scored 717,502 7.2 743,451 7.5 Agricultural business, including secured by farmland (2) 262,410 2.6 299,949 3.0 One- to four-family residential 655,627 6.6 717,939 7.3 Consumer: Consumer—home equity revolving lines of credit 466,132 4.7 491,812 5.0 Consumer—other 104,565 1.1 113,958 1.2 Total loans 9,947,697 100.0 % 9,870,982 100.0 % Less allowance for credit losses - loans (156,054) (167,279) Net loans $ 9,791,643 $ 9,703,703 (1) Includes $1.28 billion and $1.04 billion of U.S. Small Business Administration (SBA) Paycheck Protection Program (PPP) loans as of March 31, 2021 and December 31, 2020, respectively. (2) Includes $36.3 million of PPP loans as of March 31, 2021 and none as of December 31, 2020. Loan amounts are net of unearned loan fees in excess of unamortized costs of $35.5 million as of March 31, 2021 and $25.6 million as of December 31, 2020. Net loans include net discounts on acquired loans of $13.9 million and $16.1 million as of March 31, 2021 and December 31, 2020, respectively. Net loans does not include accrued interest receivable. Accrued interest receivable on loans was $38.2 million as of March 31, 2021 and $36.6 million as of December 31, 2020 and was reported in accrued interest receivable on the Consolidated Statements of Financial Condition. Purchased credit-deteriorated and purchased non-credit-deteriorated loans. Loans acquired in business combinations are recorded at their fair value at the acquisition date. Acquired loans are evaluated upon acquisition and classified as either purchased credit-deteriorated (PCD) or purchased non-credit-deteriorated. There were no PCD loans acquired for the three months ended March 31, 2021. Troubled Debt Restructurings. 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. 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 of March 31, 2021 and December 31, 2020, the Company had TDRs of $7.6 million and $7.9 million, respectively, and no commitments to advance additional funds related to TDRs. There were no new TDRs that occurred during the three months ended March 31, 2021. The following table presents new TDRs that occurred during the three months ended March 31, 2020 (dollars in thousands): Three months ended March 31, 2020 Number of Pre- Post- Recorded Investment Commercial business: Commercial business 2 4,796 4,796 Total 2 $ 4,796 $ 4,796 There were no TDRs which incurred a payment default within twelve months of the restructure date during the three-month periods ended March 31, 2021 and 2020. 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 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. The Company’s risk-rating and loan grading policies are reviewed and approved annually. There were no material changes in the risk-rating or loan grading system for the periods presented. Risk Ratings 1-5: Pass Credits with risk ratings of 1 to 5 meet the definition of a pass risk rating. The strength of credits vary within the pass risk ratings, ranging from a risk rated 1 being an exceptional credit to a risk rated 5 being an acceptable credit that requires a more than normal level of supervision. 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 make the amount and timing of any loss indeterminable. In these situations taking the loss is inappropriate until the outcome of the pending event is clear. 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 by class and by grade as of March 31, 2021 and December 31, 2020 (in thousands). Revolving loans that are converted to term loans are treated as new originations in the table below and are presented by year of origination. Term loans that are renewed or extended for periods longer than 90 days are presented as a new origination in the year of the most recent renewal or extension. March 31, 2021 Term Loans by Year of Origination Revolving Loans Total Loans By class: 2021 2020 2019 2018 2017 Prior Commercial real estate - owner occupied Risk Rating Pass $ 39,192 $ 236,836 $ 158,294 $ 147,397 $ 98,352 $ 266,316 $ 5,455 $ 951,842 Special Mention — — 16,835 — 2,217 87 — 19,139 Substandard 45 7,096 24,526 2,329 2,311 38,368 — 74,675 Doubtful — — — — — — — — Loss — — — — — — — — Total Commercial real estate - owner occupied $ 39,237 $ 243,932 $ 199,655 $ 149,726 $ 102,880 $ 304,771 $ 5,455 $ 1,045,656 Commercial real estate - investment properties Risk Rating Pass $ 41,181 $ 238,095 $ 260,934 $ 284,975 $ 226,762 $ 711,557 $ 20,001 $ 1,783,505 Special Mention — — — — — 11,079 — 11,079 Substandard 422 28,529 11,383 20,864 36,212 39,811 — 137,221 Doubtful — — — — — — — — Loss — — — — — — — — Total Commercial real estate - investment properties $ 41,603 $ 266,624 $ 272,317 $ 305,839 $ 262,974 $ 762,447 $ 20,001 $ 1,931,805 Multifamily real estate Risk Rating Pass $ 16,005 $ 76,245 $ 71,073 $ 37,683 $ 93,037 $ 133,912 $ 2,080 $ 430,035 Special Mention — — — — — — — — Substandard — 2,312 1,428 — — — — 3,740 Doubtful — — — — — — — — Loss — — — — — — — — Total Multifamily real estate $ 16,005 $ 78,557 $ 72,501 $ 37,683 $ 93,037 $ 133,912 $ 2,080 $ 433,775 March 31, 2021 Term Loans by Year of Origination Revolving Loans Total Loans By class: 2021 2020 2019 2018 2017 Prior Commercial construction Risk Rating Pass $ 4,182 $ 94,483 $ 42,572 $ 38,566 $ 332 $ 527 $ — $ 180,662 Special Mention — — 5,967 — — — — 5,967 Substandard 3,507 — 3,938 4,865 — 98 — 12,408 Doubtful — — — — — — — — Loss — — — — — — — — Total Commercial construction $ 7,689 $ 94,483 $ 52,477 $ 43,431 $ 332 $ 625 $ — $ 199,037 Multifamily construction Risk Rating Pass $ 26,801 $ 84,144 $ 128,336 $ 51,514 $ 14,899 $ — $ — $ 305,694 Special Mention — — — — — — — — Substandard — — — — — — — — Doubtful — — — — — — — — Loss — — — — — — — — Total Multifamily construction $ 26,801 $ 84,144 $ 128,336 $ 51,514 $ 14,899 $ — $ — $ 305,694 One- to four- family construction Risk Rating Pass $ 204,174 $ 324,068 $ 10,374 $ — $ — $ — $ 3,537 $ 542,153 Special Mention — — — — — — — — Substandard 356 — 331 — — — — 687 Doubtful — — — — — — — — Loss — — — — — — — — Total One- to four- family construction $ 204,530 $ 324,068 $ 10,705 $ — $ — $ — $ 3,537 $ 542,840 March 31, 2021 Term Loans by Year of Origination Revolving Loans Total Loans By class: 2021 2020 2019 2018 2017 Prior Land and land development Risk Rating Pass $ 50,665 $ 141,075 $ 26,180 $ 12,004 $ 6,567 $ 10,249 $ 16,751 $ 263,491 Special Mention — — — — — — — — Substandard 2,869 14 28 141 187 — — 3,239 Doubtful — — — — — — — — Loss — — — — — — — — Total Land and land development $ 53,534 $ 141,089 $ 26,208 $ 12,145 $ 6,754 $ 10,249 $ 16,751 $ 266,730 Commercial business Risk Rating Pass $ 440,419 $ 1,103,935 $ 211,237 $ 191,647 $ 62,188 $ 100,296 $ 211,777 $ 2,321,499 Special Mention 75 96 3,184 — 752 104 10,487 14,698 Substandard 2,235 3,620 4,912 18,140 4,860 1,583 5,047 40,397 Doubtful — — — — — — — — Loss — — — — — — — — Total Commercial business $ 442,729 $ 1,107,651 $ 219,333 $ 209,787 $ 67,800 $ 101,983 $ 227,311 $ 2,376,594 Agricultural business including secured by farmland Risk Rating Pass $ 12,322 $ 31,316 $ 55,503 $ 29,215 $ 20,206 $ 44,027 $ 61,005 $ 253,594 Special Mention — — — — 810 — — 810 Substandard — 445 2,548 803 144 2,175 1,891 8,006 Doubtful — — — — — — — — Loss — — — — — — — — Total Agricultural business including secured by farmland $ 12,322 $ 31,761 $ 58,051 $ 30,018 $ 21,160 $ 46,202 $ 62,896 $ 262,410 December 31, 2020 Term Loans by Year of Origination Revolving Loans Total Loans By class: 2020 2019 2018 2017 2016 Prior Commercial real estate - owner occupied Risk Rating Pass $ 243,100 $ 156,838 $ 156,817 $ 122,484 $ 92,312 $ 212,792 $ 3,379 $ 987,722 Special Mention — 4,560 — 2,251 — 1,869 149 8,829 Substandard 7,923 26,914 3,040 2,516 11,731 27,792 — 79,916 Doubtful — — — — — — — — Loss — — — — — — — — Total Commercial real estate - owner occupied $ 251,023 $ 188,312 $ 159,857 $ 127,251 $ 104,043 $ 242,453 $ 3,528 $ 1,076,467 Commercial real estate - investment properties Risk Rating Pass $ 237,553 $ 262,543 $ 299,452 $ 218,018 $ 278,348 $ 502,914 $ 20,062 $ 1,818,890 Special Mention — 2,712 — — 2,730 1,856 — 7,298 Substandard 19,812 11,418 20,352 36,310 23,027 18,577 — 129,496 Doubtful — — — — — — — — Loss — — — — — — — — Total Commercial real estate - investment properties $ 257,365 $ 276,673 $ 319,804 $ 254,328 $ 304,105 $ 523,347 $ 20,062 $ 1,955,684 Multifamily real estate Risk Rating Pass $ 78,632 $ 69,825 $ 39,343 $ 93,442 $ 44,395 $ 96,863 $ 1,983 $ 424,483 Special Mention — — — — — — — — Substandard 2,312 1,428 — — — — — 3,740 Doubtful — — — — — — — — Loss — — — — — — — — Total Multifamily real estate $ 80,944 $ 71,253 $ 39,343 $ 93,442 $ 44,395 $ 96,863 $ 1,983 $ 428,223 December 31, 2020 Term Loans by Year of Origination Revolving Loans Total Loans By class: 2020 2019 2018 2017 2016 Prior Commercial construction Risk Rating Pass $ 83,506 $ 67,152 $ 41,299 $ 6,038 $ 2,158 $ 1,129 $ — $ 201,282 Special Mention — 5,963 — — — — — 5,963 Substandard 12,913 3,808 4,873 — 98 — — 21,692 Doubtful — — — — — — — — Loss — — — — — — — — Total Commercial construction $ 96,419 $ 76,923 $ 46,172 $ 6,038 $ 2,256 $ 1,129 $ — $ 228,937 Multifamily construction Risk Rating Pass $ 79,710 $ 151,141 $ 59,744 $ 14,932 $ — $ — $ — $ 305,527 Special Mention — — — — — — — — Substandard — — — — — — — — Doubtful — — — — — — — — Loss — — — — — — — — Total Multifamily construction $ 79,710 $ 151,141 $ 59,744 $ 14,932 $ — $ — $ — $ 305,527 One- to four- family construction Risk Rating Pass $ 461,294 $ 35,910 $ — $ — $ — $ — $ 7,581 $ 504,785 Special Mention 1,563 — — — — — 630 2,193 Substandard 501 331 — — — — — 832 Doubtful — — — — — — — — Loss — — — — — — — — Total One- to four- family construction $ 463,358 $ 36,241 $ — $ — $ — $ — $ 8,211 $ 507,810 December 31, 2020 Term Loans by Year of Origination Revolving Loans Total Loans By class: 2020 2019 2018 2017 2016 Prior Land and land development Risk Rating Pass $ 156,450 $ 37,397 $ 16,560 $ 6,801 $ 6,264 $ 4,840 $ 17,020 $ 245,332 Special Mention — — — — — — — — Substandard 14 30 3,047 190 — 302 — 3,583 Doubtful — — — — — — — — Loss — — — — — — — — Total Land and land development $ 156,464 $ 37,427 $ 19,607 $ 6,991 $ 6,264 $ 5,142 $ 17,020 $ 248,915 Commercial business Risk Rating Pass $ 1,243,276 $ 230,845 $ 203,051 $ 65,524 $ 38,757 $ 66,206 $ 264,741 $ 2,112,400 Special Mention 103 412 — 829 — 115 9,507 10,966 Substandard 6,624 14,413 18,569 5,224 1,320 453 8,492 55,095 Doubtful — — — — — — — — Loss — — — — — — — — Total Commercial business $ 1,250,003 $ 245,670 $ 221,620 $ 71,577 $ 40,077 $ 66,774 $ 282,740 $ 2,178,461 Agricultural business including secured by farmland Risk Rating Pass $ 32,032 $ 62,058 $ 31,381 $ 22,635 $ 22,394 $ 24,950 $ 91,660 $ 287,110 Special Mention — — — 810 — 537 — 1,347 Substandard 1,542 2,652 1,076 163 675 3,049 2,335 11,492 Doubtful — — — — — — — — Loss — — — — — — — — Total Agricultural business including secured by farmland $ 33,574 $ 64,710 $ 32,457 $ 23,608 $ 23,069 $ 28,536 $ 93,995 $ 299,949 The following tables present the Company’s portfolio of non-risk-rated loans by class and delinquency status as of March 31, 2021 and December 31, 2020 (in thousands). Revolving loans that are converted to term loans are treated as new originations in the table below and are presented by year of origination. Term loans that are renewed or extended for periods longer than 90 days are presented as a new origination in the year of the most recent renewal or extension. March 31, 2021 Term Loans by Year of Origination Revolving Loans Total Loans By class: 2021 2020 2019 2018 2017 Prior Small balance CRE Past Due Category Current $ 16,636 $ 86,223 $ 83,030 $ 89,631 $ 83,972 $ 275,125 $ 1,059 $ 635,676 30-59 Days Past Due — — — — — 895 — 895 60-89 Days Past Due — — — — — 1,978 — 1,978 90 Days + Past Due — — — — 558 223 — 781 Total small balance CRE $ 16,636 $ 86,223 $ 83,030 $ 89,631 $ 84,530 $ 278,221 $ 1,059 $ 639,330 Small business scored Past Due Category Current $ 36,376 $ 148,553 $ 134,717 $ 114,934 $ 78,944 $ 99,736 $ 100,192 $ 713,452 30-59 Days Past Due 50 17 139 694 82 357 121 1,460 60-89 Days Past Due — 755 54 89 47 — 3 948 90 Days + Past Due — 130 18 280 617 597 — 1,642 Total small business scored $ 36,426 $ 149,455 $ 134,928 $ 115,997 $ 79,690 $ 100,690 $ 100,316 $ 717,502 One- to four- family residential Past Due Category Current $ 16,134 $ 113,853 $ 80,610 $ 79,090 $ 82,592 $ 276,047 $ 2,740 $ 651,066 30-59 Days Past Due — 277 — 247 369 94 — 987 60-89 Days Past Due — — — 19 — 2 — 21 90 Days + Past Due 41 — 972 174 — 2,366 — 3,553 Total One- to four- family residential $ 16,175 $ 114,130 $ 81,582 $ 79,530 $ 82,961 $ 278,509 $ 2,740 $ 655,627 March 31, 2021 Term Loans by Year of Origination Revolving Loans Total Loans By class: 2021 2020 2019 2018 2017 Prior Consumer—home equity revolving lines of credit Past Due Category Current $ 8,652 $ 1,216 $ 3,046 $ 3,089 $ 2,484 $ 2,888 $ 442,660 $ 464,035 30-59 Days Past Due — — 64 — — 193 207 464 60-89 Days Past Due — — — — 109 — — 109 90 Days + Past Due — — 413 196 127 556 232 1,524 Total Consumer—home equity revolving lines of credit $ 8,652 $ 1,216 $ 3,523 $ 3,285 $ 2,720 $ 3,637 $ 443,099 $ 466,132 Consumer-other Past Due Category Current $ 2,738 $ 19,754 $ 11,549 $ 12,375 $ 9,931 $ 24,136 $ 23,893 $ 104,376 30-59 Days Past Due — — — 13 2 56 60 131 60-89 Days Past Due — — 27 4 — 10 17 58 90 Days + Past Due — — — — — — — — Total Consumer-other $ 2,738 $ 19,754 $ 11,576 $ 12,392 $ 9,933 $ 24,202 $ 23,970 $ 104,565 December 31, 2020 Term Loans by Year of Origination Revolving Loans Total Loans By class: 2020 2019 2018 2017 2016 Prior Small balance CRE Past Due Category Current $ 56,544 $ 80,090 $ 84,749 $ 77,637 $ 68,791 $ 202,653 $ 2,550 $ 573,014 30-59 Days Past Due — — — — — — — — 60-89 Days Past Due — — — 45 — — — 45 90 Days + Past Due — — — 567 — 223 — 790 Total small balance CRE $ 56,544 $ 80,090 $ 84,749 $ 78,249 $ 68,791 $ 202,876 $ 2,550 $ 573,849 Small business scored Past Due Category Current $ 157,161 $ 145,037 $ 126,578 $ 89,734 $ 47,909 $ 63,347 $ 109,287 $ 739,053 30-59 Days Past Due 129 62 310 723 4 1 230 1,459 60-89 Days Past Due 98 147 3 140 — 352 151 891 90 Days + Past Due 73 228 800 484 169 248 46 2,048 Total small business scored $ 157,461 $ 145,474 $ 127,691 $ 91,081 $ 48,082 $ 63,948 $ 109,714 $ 743,451 One- to four- family residential Past Due Category Current $ 105,411 $ 90,425 $ 92,232 $ 101,491 $ 60,738 $ 254,850 $ 3,164 $ 708,311 30-59 Days Past Due 1,051 — 1,302 829 — 1,438 — 4,620 60-89 Days Past Due — — 19 — — 936 — 955 90 Days + Past Due — 114 1,185 456 169 2,129 — 4,053 Total One- to four- family residential $ 106,462 $ 90,539 $ 94,738 $ 102,776 $ 60,907 $ 259,353 $ 3,164 $ 717,939 December 31, 2020 Term Loans by Year of Origination Revolving Loans Total Loans By class: 2020 2019 2018 2017 2016 Prior Consumer—home equity revolving lines of credit Past Due Category Current $ 10,522 $ 2,617 $ 2,553 $ 3,359 $ 1,372 $ 2,154 $ 466,490 $ 489,067 30-59 Days Past Due — — — — — 50 409 459 60-89 Days Past Due — 202 — — — 237 — 439 90 Days + Past Due — 312 198 564 286 255 232 1,847 Total Consumer—home equity revolving lines of credit $ 10,522 $ 3,131 $ 2,751 $ 3,923 $ 1,658 $ 2,696 $ 467,131 $ 491,812 Consumer-other Past Due Category Current $ 21,811 $ 13,377 $ 13,936 $ 11,433 $ 8,575 $ 18,802 $ 25,460 $ 113,394 30-59 Days Past Due 48 35 15 22 46 26 44 236 60-89 Days Past Due 242 — — 33 21 14 18 328 90 Days + Past Due — — — — — — — — Total Consumer-other $ 22,101 $ 13,412 $ 13,951 $ 11,488 $ 8,642 $ 18,842 $ 25,522 $ 113,958 The following tables provide the amortized cost basis of collateral-dependent loans as of March 31, 2021 and December 31, 2020 (in thousands). Our collateral dependent loans presented in the tables below have no significant concentrations by property type or location. March 31, 2021 Real Estate Accounts Receivable Equipment Inventory Total Commercial real estate: Owner-occupied $ 4,684 $ — $ — $ — $ 4,684 Investment properties 12,568 — — — 12,568 Small balance CRE 3,090 — — — 3,090 Commercial business Commercial business 557 — 73 — 630 Small business scored 43 — 47 — 90 Agricultural business, including secured by farmland 427 — 930 — 1,357 Total $ 21,369 $ — $ 1,050 $ — $ 22,419 December 31, 2020 Real Estate Accounts Receivable Equipment Inventory Total Commercial real estate: Owner-occupied $ 7,506 $ — $ — $ — $ 7,506 Investment properties 8,979 — — — 8,979 Small balance CRE 567 — — — 567 Land and land development 302 — — — 302 Commercial business Commercial business 557 — — — 557 Small business scored 44 — 47 — 91 Agricultural business, including secured by farmland 427 — 984 — 1,411 One- to four-family residential 196 — — — 196 Total $ 18,578 $ — $ 1,031 $ — $ 19,609 The following tables provide additional detail on the age analysis of the Company’s past due loans as of March 31, 2021 and December 31, 2020 (in thousands): March 31, 2021 30-59 Days 60-89 Days 90 Days or More Total Current Total Loans Non-accrual with no Allowance Total Non-accrual (1) Loans 90 Days or More Past Due and Accruing Commercial real estate: Owner-occupied $ 14,824 $ 4,687 $ 587 $ 20,098 $ 1,025,558 $ 1,045,656 $ 4,687 $ 5,416 $ — Investment properties 1 1,322 3,709 5,032 1,926,773 1,931,805 12,568 12,568 — Small balance CRE 895 1,978 781 3,654 635,676 639,330 3,086 3,631 — Multifamily real estate — — — — 433,775 433,775 — — — Construction, land and land development: Commercial construction — — 98 98 198,939 199,037 — 98 — Multifamily construction — — — — 305,694 305,694 — — — One- to four-family construction 170 — — 170 542,670 542,840 — 687 — Land and land development — — 14 14 266,716 266,730 — 201 — Commercial business Commercial business 159 558 228 945 2,375,649 2,376,594 628 1,266 — Small business scored 1,460 948 1,642 4,050 713,452 717,502 90 2,928 37 Agricultural business, including secured by farmland — — 1,536 1,536 260,874 262,410 1,357 1,536 — One- to four-family residential 987 21 3,553 4,561 651,066 655,627 — 4,456 1,524 Consumer: Consumer—home equity revolving lines of credit 464 109 1,524 2,097 464,035 466,132 — 2,234 — Consumer—other 131 58 — 189 104,376 104,565 — 10 — Total $ 19,091 $ 9,681 $ 13,672 $ 42,444 $ 9,905,253 $ 9,947,697 $ 22,416 $ 35,031 $ 1,561 December 31, 2020 30-59 Days 60-89 Days 90 Days or More Total Current Total Loans Non-accrual with no Allowance Total Non-accrual (1) Loans 90 Days or More Past Due and Accruing Commercial real estate: Owner-occupied $ — $ 182 $ 1,447 $ 1,629 $ 1,074,838 $ 1,076,467 $ 7,509 $ 8,429 $ — Investment properties — — 7,981 7,981 1,947,703 1,955,684 8,979 8,979 — Small balance CRE — 45 790 835 573,014 573,849 567 791 — Multifamily real estate — — — — 428,223 428,223 — — — Construction, land and land development: Commercial construction — — 98 98 228,839 228,937 — 98 — Multifamily construction — — — — 305,527 305,527 — — — One- to four-family construction 356 — 331 687 507,123 507,810 — 331 — Land and land development — — 317 317 248,598 248,915 302 507 — Commercial business Commercial business 3,247 31 2,088 5,366 2,173,095 2,178,461 555 1,988 889 Small business scored 1,459 891 2,048 4,398 739,053 743,451 91 3,419 136 Agricultural business, including secured by farmland 298 37 1,548 1,883 298,066 299,949 1,412 1,743 — One-to four-family residential 4,620 955 4,053 9,628 708,311 717,939 171 3,556 1,899 Consumer: Consumer secured by one- to four-family 459 439 1,847 2,745 489,067 491,812 — 2,697 130 Consumer—other 236 328 — 564 113,394 113,958 — 22 — Total $ 10,675 $ 2,908 $ 22,548 $ 36,131 $ 9,834,851 $ 9,870,982 $ 19,586 $ 32,560 $ 3,054 (1) The Company did not recognize any interest income on non-accrual loans during both the three months ended March 31, 2021 and the year ended December 31, 2020. The following tables provide the activity in the allowance for credit losses by portfolio segment for the three months ended March 31, 2021 and 2020 (in thousands): For the Three Months Ended March 31, 2021 Commercial Multifamily Construction and Land Commercial Business Agricultural Business One- to Four-Family Residential Consumer Unallocated Total Allowance for credit losses: Beginning balance $ 57,791 $ 3,893 $ 41,295 $ 35,007 $ 4,914 $ 9,913 $ 14,466 $ — $ 167,279 Provision/(recapture) for credit losses 5,359 474 (4,955) (3,786) (297) (2,038) (2,792) — (8,035) Recoveries 24 — 100 979 — 113 296 — 1,512 Charge-offs (3,763) — — (789) — — (150) — (4,702) Ending balance $ 59,411 $ 4,367 $ 36,440 $ 31,411 $ 4,617 $ 7,988 $ 11,820 $ — $ 156,054 The changes in the allowance for credit losses during the three months ended March 31, 2021 were primarily the result of the $8.0 million recapture of provision for credit losses recorded as well as the net charge offs of $3.2 million recognized during the current quarter. The recapture of provision for credit losses for the current quarter primarily reflects the decrease in loan balances, excluding the increase in PPP loans, as well as improvement in the forecasted economic indicators. For the Three Months Ended March 31, 2020 Commercial Multifamily Construction and Land Commercial Business Agricultural Business One- to Four-Family Residential Consumer Unallocated Total Allowance for credit losses: Beginning balance $ 30,591 $ 4,754 $ 22,994 $ 23,370 $ 4,120 $ 4,136 $ 8,202 $ 2,392 $ 100,559 Impact of Adopting ASC 326 (2,864) (2,204) 2,515 3,010 (351) 7,125 2,973 (2,392) 7,812 Provision/(recapture) for credit losses 1,545 321 8,708 6,447 (1,006) 539 5,159 — 21,713 Recoveries 167 — — 205 1,750 148 96 — 2,366 Charge-offs (100) (66) — (1,384) — (64) (348) — (1,962) Ending balance $ 29,339 $ 2,805 $ 34,217 $ 31,648 $ 4,513 $ 11,884 $ 16,082 $ — $ 130,488

GOODWILL, OTHER INTANGIBLE ASSE

GOODWILL, OTHER INTANGIBLE ASSETS AND MORTGAGE SERVICING RIGHTS	3 Months Ended
	Mar. 31, 2021
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, 2021, intangible assets are comprised of goodwill and CDI acquired in business combinations. 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 at least annually for impairment. Banner has identified one reporting unit for purposes of evaluating goodwill for impairment. The Company completed an assessment of qualitative factors as of December 31, 2020 and as a result of the economic impact of the COVID-19 pandemic concluded further analysis was required. The Company completed a quantitative goodwill impairment test and concluded the fair value of Banner Bank, the reporting unit, exceeded the carrying value of the reporting unit including goodwill and therefore no impairment existed as of December 31, 2020. CDI represents the value of transaction-related deposits and the value of the client relationships associated with the deposits. The Company amortizes CDI assets 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, 2021 and the year ended December 31, 2020 (in thousands): Goodwill CDI Total Balance, December 31, 2019 $ 373,121 $ 29,158 $ 402,279 Amortization — (7,732) (7,732) Balance, December 31, 2020 373,121 21,426 394,547 Amortization — (1,711) (1,711) Balance, March 31, 2021 $ 373,121 $ 19,715 $ 392,836 The following table presents the estimated amortization expense with respect to CDI as of March 31, 2021 for the periods indicated (in thousands): Estimated Amortization Remainder of 2021 $ 4,860 2022 5,317 2023 3,814 2024 2,659 2025 1,575 Thereafter 1,490 $ 19,715 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, 2021 and 2020, 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 $2.65 billion and $2.64 billion at March 31, 2021 and December 31, 2020, respectively. Custodial accounts maintained in connection with this servicing totaled $3.7 million and $3.8 million at March 31, 2021 and December 31, 2020, respectively. An analysis of our mortgage servicing rights for the three months ended March 31, 2021 and 2020 is presented below (in thousands): Three Months Ended 2021 2020 Balance, beginning of the period $ 15,223 $ 14,148 Additions—amounts capitalized 2,010 1,420 Additions—through purchase 27 63 Amortization (1) (1,853) (1,354) Balance, end of the period (2) $ 15,407 $ 14,277 (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 both March 31, 2021 and 2020.

REAL ESTATE OWNED, NET

REAL ESTATE OWNED, NET	3 Months Ended
	Mar. 31, 2021
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, 2021 and 2020 (in thousands): Three Months Ended 2021 2020 Balance, beginning of the period $ 816 $ 814 Additions from loan foreclosures — 1,588 Proceeds from dispositions of REO (783) — Gain on sale of REO 307 — Balance, end of the period $ 340 $ 2,402 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. The Company had no foreclosed one- to four-family residential real estate properties held as REO at March 31, 2021 or December 31, 2020. The Company had $609,000 of one- to four-family residential loans in the process of foreclosure at both March 31, 2021 and December 31, 2020.

DEPOSITS

DEPOSITS	3 Months Ended
	Mar. 31, 2021
Banking and Thrift, Other Disclosures [Abstract]
DEPOSITS	DEPOSITS Deposits consisted of the following at March 31, 2021 and December 31, 2020 (in thousands): March 31, 2021 December 31, 2020 Non-interest-bearing accounts $ 5,994,693 $ 5,492,924 Interest-bearing checking 1,722,085 1,569,435 Regular savings accounts 2,597,731 2,398,482 Money market accounts 2,327,380 2,191,135 Total interest-bearing transaction and saving accounts 6,647,196 6,159,052 Certificates of deposit: Certificates of deposit less than or equal to $250,000 711,424 718,256 Certificates of deposit greater than $250,000 195,554 197,064 Total certificates of deposit (1) 906,978 915,320 Total deposits $ 13,548,867 $ 12,567,296 Included in total deposits: Public fund transaction and savings accounts $ 321,042 $ 302,875 Public fund interest-bearing certificates 51,021 59,127 Total public deposits $ 372,063 $ 362,002 Total brokered deposits $ — $ — (1) Certificates of deposit include $34,000 and $58,000 of acquisition premiums at March 31, 2021 and December 31, 2020, respectively. At March 31, 2021 and December 31, 2020, the Company had certificates of deposit of $200.8 million and $203.6 million, respectively, that were equal to or greater than $250,000. Scheduled maturities and weighted average interest rates of certificates of deposit at March 31, 2021 are as follows (dollars in thousands): March 31, 2021 Amount Weighted Average Rate Maturing in one year or less $ 705,004 0.71 % Maturing after one year through two years 116,565 1.29 Maturing after two years through three years 61,618 0.81 Maturing after three years through four years 13,244 1.89 Maturing after four years through five years 8,684 0.72 Maturing after five years 1,863 0.95 Total certificates of deposit $ 906,978 0.81 %

FAIR VALUE OF FINANCIAL INSTRUM

FAIR VALUE OF FINANCIAL INSTRUMENTS	3 Months Ended
	Mar. 31, 2021
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, 2021 and December 31, 2020, whether or not measured at fair value in the Consolidated Statements of Financial Condition (dollars in thousands): March 31, 2021 December 31, 2020 Level Carrying Estimated Carrying Estimated Assets: Cash and cash equivalents 1 $ 1,649,927 $ 1,649,927 $ 1,234,183 $ 1,234,183 Securities—trading 3 25,039 25,039 24,980 24,980 Securities—available-for-sale 2 2,989,760 2,989,760 2,322,593 2,322,593 Securities—held-to-maturity 2 418,871 436,484 410,038 436,882 Securities—held-to-maturity 3 23,084 23,111 11,769 11,799 Loans held for sale 2 135,263 136,873 243,795 245,667 Loans receivable 3 9,947,697 9,967,242 9,870,982 9,810,293 FHLB stock 3 14,001 14,001 16,358 16,358 Bank-owned life insurance 1 191,388 191,388 191,830 191,830 Mortgage servicing rights 3 15,407 21,176 15,223 18,084 Derivatives: Interest rate swaps 2 25,246 25,246 39,066 39,066 Interest rate lock and forward sales commitments 2,3 6,186 6,186 5,641 5,641 Liabilities: Demand, interest checking and money market accounts 2 10,044,158 10,044,158 9,253,494 9,253,494 Regular savings 2 2,597,731 2,597,731 2,398,482 2,398,482 Certificates of deposit 2 906,978 910,069 915,320 919,920 FHLB advances 2 100,000 101,908 150,000 152,779 Other borrowings 2 216,260 216,260 184,785 184,785 Subordinated notes, net 3 98,290 98,290 98,201 98,201 Junior subordinated debentures 3 117,248 117,248 116,974 116,974 Derivatives: Interest rate swaps 2 17,923 17,923 22,336 22,336 Interest rate lock and forward sales commitments 2 85 85 1,755 1,755 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. In developing Level 3 measurements, management incorporates whatever market data might be available and uses discounted cash flow models where appropriate. These calculations include projections of future cash flows, including appropriate default and loss assumptions, and market-based discount rates 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 many of the 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, 2021 and December 31, 2020 (in thousands): March 31, 2021 Level 1 Level 2 Level 3 Total Assets: Securities—trading Corporate bonds (Trust Preferred Securities) $ — $ — $ 25,039 $ 25,039 Securities—available-for-sale U.S. Government and agency obligations — 62,846 — 62,846 Municipal bonds — 300,735 — 300,735 Corporate bonds — 245,428 — 245,428 Mortgage-backed or related securities — 2,377,003 — 2,377,003 Asset-backed securities — 3,748 — 3,748 — 2,989,760 — 2,989,760 Loans held for sale — 59,993 — 59,993 Derivatives Interest rate swaps — 25,246 — 25,246 Interest rate lock and forward sales commitments — 3,249 2,937 6,186 $ — $ 3,078,248 $ 27,976 $ 3,106,224 Liabilities: Junior subordinated debentures $ — $ — $ 117,248 $ 117,248 Derivatives Interest rate swaps — 17,923 — 17,923 Interest rate lock and forward sales commitments — 85 — 85 $ — $ 18,008 $ 117,248 $ 135,256 December 31, 2020 Level 1 Level 2 Level 3 Total Assets: Securities—trading Corporate bonds (Trust Preferred Securities) $ — $ — $ 24,980 $ 24,980 Securities—available-for-sale U.S. Government and agency obligations — 141,735 — 141,735 Municipal bonds — 303,518 — 303,518 Corporate bonds — 221,769 — 221,769 Mortgage-backed securities — 1,646,152 — 1,646,152 Asset-backed securities — 9,419 — 9,419 — 2,322,593 — 2,322,593 Loans held for sale — 133,554 — 133,554 Derivatives Interest rate swaps — 39,066 — 39,066 Interest rate lock and forward sales commitments — 420 5,221 5,641 $ — $ 2,495,633 $ 30,201 $ 2,525,834 Liabilities: Junior subordinated debentures, net of unamortized deferred issuance costs $ — $ — $ 116,974 $ 116,974 Derivatives Interest rate swaps — 22,336 — 22,336 Interest rate lock and forward sales commitments — 1,755 — 1,755 $ — $ 24,091 $ 116,974 $ 141,065 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 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 an income approach technique. 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 validate 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 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, 2021 and December 31, 2020. 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, 2021 and December 31, 2020: Weighted Average Rate / Range Financial Instruments Valuation Techniques Unobservable Inputs March 31, 2021 December 31, 2020 Corporate bonds (TPS securities) Discounted cash flows Discount rate 4.19 % 4.24 % Junior subordinated debentures Discounted cash flows Discount rate 4.19 % 4.24 % Loans individually evaluated Collateral valuations Discount to appraised value 8.5% to 20.0% 0.0% to 20.0% REO Appraisals Discount to appraised value 68.35 % 51.86 % Interest rate lock commitments Pricing model Pull-through rate 89.15 % 86.35 % 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, 2021, or the passage of time, will result in negative fair value adjustments. At March 31, 2021, the discount rate utilized was based on a credit spread of 400 basis points and three-month LIBOR of 19 basis points. Interest rate lock commitments: The fair value of the interest rate lock commitments is based on secondary market sources adjusted for an estimated pull-through rate. The pull-through rate is based on historical loan closing rates for similar interest rate lock commitments. An increase or decrease in the pull-through rate would have a corresponding, positive or negative fair value adjustment. 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, 2021 and 2020 (in thousands): Three Months Ended March 31, 2021 Level 3 Fair Value Inputs TPS Securities Borrowings—Junior Subordinated Debentures Interest Rate Lock Commitments Beginning balance $ 24,980 $ 116,974 $ 5,221 Total gains or losses recognized Assets gains (losses) 59 — (2,284) Liabilities losses — 274 — Ending balance at March 31, 2021 $ 25,039 $ 117,248 $ 2,937 Three Months Ended March 31, 2020 Level 3 Fair Value Inputs TPS Securities Borrowings—Junior Subordinated Debentures Interest Rate Lock Commitments Beginning balance $ 25,636 $ 119,304 $ 791 Total gains or losses recognized Assets (losses) gains (4,596) — 1,726 Liabilities gains — (19,509) — Ending balance at March 31, 2020 $ 21,040 $ 99,795 $ 2,517 Interest income and dividends from the TPS securities are recorded as a component of interest income. Interest expense related to the junior subordinated debentures is measured based on contractual interest rates and reported in interest expense. The change in fair value of the junior subordinated debentures, which represents changes in instrument specific credit risk, is recorded in other comprehensive income. See Note 13, Derivatives and Hedging, for detail on gains and losses on Level 3 interest rate lock commitments. 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, 2021 and December 31, 2020 (in thousands): March 31, 2021 Level 1 Level 2 Level 3 Total Loans individually evaluated $ — $ — $ 627 $ 627 REO — — 340 340 December 31, 2020 Level 1 Level 2 Level 3 Total Loans individually evaluated $ — $ — $ 3,482 $ 3,482 REO — — 816 816 The following table presents the losses resulting from non-recurring fair value adjustments for the three months ended March 31, 2021 and 2020 (in thousands): Three Months Ended March 31, 2021 2020 Loans individually evaluated $ 302 $ — REO — — Total loss from non-recurring measurements $ 302 $ — Loans individually evaluated : Expected credit losses for loans evaluated individually are measured based on the present value of expected future cash flows discounted at the loan’s original effective interest rate or when the Bank determines that foreclosure is probable, the expected credit loss is measured based on the fair value of the collateral as of the reporting date, less estimated selling costs, as applicable. As a practical expedient, the Bank measures the expected credit loss for a loan using the fair value of the collateral, if repayment is expected to be provided substantially through the operation or sale of the collateral when the borrower is experiencing financial difficulty based on the Bank’s assessment as of the reporting date. In both cases, if the fair value of the collateral is less than the amortized cost basis of the loan, the Bank will recognize an allowance as the difference between the fair value of the collateral, less costs to sell (if applicable), at the reporting date and the amortized cost basis of the loan. If the fair value of the collateral exceeds the amortized cost basis of the loan, any expected recovery added to the amortized cost basis will be limited to the amount previously charged-off by the subsequent changes in the expected credit losses for loans evaluated individually are included within the provision for credit losses in the same manner in which the expected credit loss initially was recognized or as a reduction in the provision that would otherwise be reported. 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.

INCOME TAXES AND DEFERRED TAXES

INCOME TAXES AND DEFERRED TAXES	3 Months Ended
	Mar. 31, 2021
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, 2021, the Company has recognized $450,000 of unrecognized tax benefits for uncertain tax positions. The Company does not anticipate that there are additional uncertain tax positions or that any uncertain tax position which has not been recognized would materially affect the effective tax rate if recognized. 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, Idaho and Montana state jurisdictions. 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, 2021 and December 31, 2020 (in thousands): March 31, 2021 December 31, 2020 Tax credit investments $ 32,613 $ 33,528 Unfunded commitments—tax credit investments 15,383 18,306 The following table presents other information related to the Company’s tax credit investments for the three months ended March 31, 2021 and 2020 (in thousands): Three Months Ended March 31, 2021 2020 Tax credits and other tax benefits recognized $ 1,068 $ 1,007 Tax credit amortization expense included in provision for income taxes 915 809

CALCULATION OF WEIGHTED AVERAGE

CALCULATION OF WEIGHTED AVERAGE SHARES OUTSTANDING FOR EARNINGS PER SHARE (EPS)	3 Months Ended
	Mar. 31, 2021
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 average shares outstanding used to calculate earnings per share data for the three months ended March 31, 2021 and 2020 (in thousands, except shares and per share data): Three Months Ended 2021 2020 Net income $ 46,855 $ 16,882 Basic weighted average shares outstanding 34,973,383 35,463,541 Dilutive effect of unvested restricted stock 330,100 176,922 Diluted weighted shares outstanding 35,303,483 35,640,463 Earnings per common share Basic $ 1.34 $ 0.48 Diluted $ 1.33 $ 0.47

STOCK-BASED COMPENSATION PLANS

STOCK-BASED COMPENSATION PLANS	3 Months Ended
	Mar. 31, 2021
Share-based Payment Arrangement [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: • 2014 Omnibus Incentive Plan (the 2014 Plan). • 2018 Omnibus Incentive Plan (the 2018 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. 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, 2021, 300,015 restricted stock shares and 403,440 restricted stock units have been granted under the 2014 Plan of which 3,884 restricted stock shares and 148,093 restricted stock units are unvested. 2018 Omnibus Incentive Plan The 2018 Plan was approved by shareholders on April 24, 2018. The 2018 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 common stock for issuance under the 2018 Plan in connection with the exercise of awards. As of March 31, 2021, 503,955 restricted stock units have been granted under the 2018 Plan of which 417,555 restricted stock units are unvested.

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	3 Months Ended
	Mar. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES 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 clients. 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, 2021 December 31, 2020 Commitments to extend credit $ 3,357,135 $ 3,207,072 Standby letters of credit and financial guarantees 21,493 18,415 Commitments to originate loans 134,759 101,426 Risk participation agreement 40,789 40,949 Derivatives also included in Note 14: Commitments to originate loans held for sale 165,236 169,653 Commitments to sell loans secured by one- to four-family residential properties 82,963 79,414 Commitments to sell securities related to mortgage banking activities 199,500 204,000 In addition to the commitments disclosed in the table above, the Company is committed to funding its’ unfunded tax credit investments (see Note 10, Income Taxes). During 2019, the Company entered into an agreement to invest $10 million in a limited partnership. The Company had funded $4.2 million of the commitment, with $5.8 million of the commitment remaining to be funded at March 31, 2021, compared to $2.8 million of the commitment funded, with $7.2 million to be funded at December 31, 2020. During the first quarter of 2021, the Company entered into an agreement to invest $4.5 million in another limited partnership. At March 31, 2021 the Company had not invested any funds pursuant to this commitment. Commitments to extend credit are agreements to lend to a client, 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 client’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 client. The type of collateral held varies, but may include accounts receivable, inventory, property, plant and equipment, and income producing commercial properties. The Company’s allowance for credit losses - unfunded loan commitments at March 31, 2021 and December 31, 2020 was $12.1 million and $13.3 million, respectively. Standby letters of credit are conditional commitments issued to guarantee a client’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 clients. Banner Bank has a risk participation agreement under which 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 clients 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 client. Banner 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 would require a lock extension. The cost of a lock extension at times was borne by the client and at times by Banner Bank. These lock extension costs have not had a material impact to the Company’s operations. For mandatory delivery commitments 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 no counterparty default losses on forward contracts during the three months ended March 31, 2021 or March 31, 2020. 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 clients 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 Bank holds a security interest. Based upon the information known to management at this time, the Company and the Bank 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, 2021. In connection with certain asset sales, the Bank typically makes 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 Bank believes that the potential for material loss under these arrangements is remote. Accordingly, the fair value of such obligations is not material.

DERIVATIVES AND HEDGING

DERIVATIVES AND HEDGING	3 Months Ended
	Mar. 31, 2021
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 client 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 client 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, clients received fixed interest rate commercial loans and 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 clients 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, 2021 and December 31, 2020, 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, 2021 December 31, 2020 March 31, 2021 December 31, 2020 Notional/ Fair Value (1) Notional/ Fair Value (1) Notional/ Fair Value (2) Notional/ Fair Value (2) Interest rate swaps $ 248 $ 5 $ 338 $ 9 $ 248 $ 5 $ 338 $ 9 (1) Included in Loans receivable on the Consolidated Statements of Financial Condition. (2) Included in Accrued expenses and 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 clients that provides the client with a variable-rate loan and enters into an interest rate swap in which the client receives a variable-rate payment in exchange for a fixed-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: The Company sells originated one- to four-family 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 mortgage loans held for sale, for which fair value accounting has been elected, that are awaiting sale and delivery into the secondary market. The Company economically hedges the risk of changing interest rates associated with these mortgage loan commitments by entering into forward sales contracts to sell one- to four-family mortgage loans or mortgage-backed securities to broker/dealers at specific prices and dates. As of March 31, 2021 and December 31, 2020, 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, 2021 December 31, 2020 March 31, 2021 December 31, 2020 Notional/ Fair Value (1) Notional/ Fair Value (1) Notional/ Fair Value (2) Notional/ Fair Value (2) Interest rate swaps $ 458,118 $ 25,241 $ 451,760 $ 39,057 $ 458,118 $ 17,918 $ 451,760 $ 22,327 Mortgage loan commitments 139,668 2,937 140,390 5,221 62,267 85 72,511 199 Forward sales contracts 282,463 3,249 79,414 420 — — 204,000 1,556 $ 880,249 $ 31,427 $ 671,564 $ 44,698 $ 520,385 $ 18,003 $ 728,271 $ 24,082 (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 $246,000 at March 31, 2021 and $231,000 at December 31, 2020), which are included in Loans receivable. (2) Included in Accrued expenses and 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, 2021 and 2020 were as follows (in thousands): Location on Consolidated Three Months Ended 2021 2020 Mortgage loan commitments Mortgage banking operations $ (2,284) $ 1,726 Forward sales contracts Mortgage banking operations 3,011 (3,068) $ 727 $ (1,342) 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, 2021 or December 31, 2020, it could have been required to settle its obligations under the agreements at the termination value. As of March 31, 2021 and December 31, 2020, the termination value of derivatives in a net liability position related to these agreements was $24.1 million and $48.6 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 $55.7 million and $47.1 million as of March 31, 2021 and December 31, 2020, respectively. Derivative assets and liabilities are recorded at fair value on the balance sheet. 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. In addition, some of interest rate swap derivatives between Banner Bank and the dealer counterparties are cleared through central clearing houses. These clearing houses characterize the variation margin payments as settlements of the derivative’s market exposure and not as collateral. The variation margin is treated as an adjustment to our cash collateral, as well as a corresponding adjustment to our derivative liability. As of March 31, 2021 and December 31, 2020, the variation margin adjustment was a negative adjustment of $6.0 million and $16.9 million, respectively. The following tables present additional information related to the Company’s derivative contracts, by type of financial instrument, as of March 31, 2021 and December 31, 2020 (in thousands): March 31, 2021 Gross Amounts of Financial Instruments Not Offset in the Consolidated Statements of Financial Condition Gross Amounts Recognized Amounts offset Net Amounts Netting Adjustment Per Applicable Master Netting Agreements Fair Value Net Amount Derivative assets Interest rate swaps $ 25,246 $ — $ 25,246 $ — $ — $ 25,246 $ 25,246 $ — $ 25,246 $ — $ — $ 25,246 Derivative liabilities Interest rate swaps $ 23,877 $ (5,954) $ 17,923 $ — $ (12,881) $ 5,042 $ 23,877 $ (5,954) $ 17,923 $ — $ (12,881) $ 5,042 December 31, 2020 Gross Amounts of Financial Instruments Not Offset in the Consolidated Statements of Financial Condition Gross Amounts Recognized Amounts offset Net Amounts Netting Adjustment Per Applicable Master Netting Agreements Fair Value Net Amount Derivative assets Interest rate swaps $ 39,066 $ — $ 39,066 $ — $ — $ 39,066 $ 39,066 $ — $ 39,066 $ — $ — $ 39,066 Derivative liabilities Interest rate swaps $ 39,204 $ (16,868) $ 22,336 $ — $ (22,220) $ 116 $ 39,204 $ (16,868) $ 22,336 $ — $ (22,220) $ 116

REVENUE FROM CONTRACTS WITH CUS

REVENUE FROM CONTRACTS WITH CUSTOMERS	3 Months Ended
	Mar. 31, 2021
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Text Block]	REVENUE FROM CONTRACTS WITH CLIENTS Disaggregation of Revenue: Deposit fees and other service charges for the three months ended March 31, 2021 and 2020 are summarized as follows (in thousands): Three Months Ended 2021 2020 Deposit service charges $ 4,113 $ 4,832 Debit and credit card interchange fees 5,290 4,884 Debit and credit card expense (2,520) (1,932) Merchant services income 3,142 3,002 Merchant services expense (2,532) (2,436) Other service charges 1,446 1,453 Total deposit fees and other service charges $ 8,939 $ 9,803 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 clients for specific services provided to the client. 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 client. 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 debit or credit card issued by the Bank is used to purchase goods or services at a merchant. The merchant’s bank pays the Bank a default interchange rate set by MasterCard on a transaction by transaction basis. The merchant acquiring bank can stop accepting the Bank’s cards at any time and the Bank 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 Bank’s 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 Bank for card payment services provided to its merchant clients. The Bank has a contract with a third party to provide card payment services to the Bank’s merchants that contract for those services. The third party provider has contracts with the Bank’s merchants to provide the card payment services. The Bank does not have a direct contractual relationship with its merchants for these services. The Bank sets the rates for the services provided by the third party. The third party provider passes the payments made by the Bank’s merchants through to the Bank. The Bank, in turn, pays the third party provider for the services it provides to the Bank’s 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 Bank 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.

BASIS OF PRESENTATION AND SIG_2

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies)	3 Months Ended
	Mar. 31, 2021
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 subsidiary, Banner Bank (the Bank). 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, 2021 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 note disclosures 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 2020 Consolidated Financial Statements and/or schedules to conform to the 2021 presentation. Prior to the first quarter of 2021, the (recapture) provision for credit losses - unfunded loan commitment was recorded as non-interest expense, beginning in the first quarter of 2021 the (recapture) provision for credit losses - unfunded loan commitment is recorded as a component of the provision for credit losses. 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 credit losses, (iii) the valuation of financial assets and liabilities recorded at fair value (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 acquired and liabilities assumed 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, 2020 filed with the SEC (2020 Form 10-K). There have been no significant changes in our application of these accounting policies during the first three months of 2021. The information included in this Form 10-Q should be read in conjunction with our 2020 Form 10-K. Interim results are not necessarily indicative of results for a full year or any other interim period.

SECURITIES (Tables)

SECURITIES (Tables)	3 Months Ended
	Mar. 31, 2021
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, 2021 and December 31, 2020 are summarized as follows (in thousands): March 31, 2021 Amortized Cost Fair Trading: Corporate bonds $ 27,203 $ 25,039 $ 27,203 $ 25,039 March 31, 2021 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Allowance for Credit Losses Fair Available-for-Sale: U.S. Government and agency obligations $ 62,922 $ 740 $ (816) $ — $ 62,846 Municipal bonds 287,685 14,378 (1,328) — 300,735 Corporate bonds 243,428 2,290 (290) — 245,428 Mortgage-backed or related securities 2,399,117 28,710 (50,824) — 2,377,003 Asset-backed securities 3,750 — (2) — 3,748 $ 2,996,902 $ 46,118 $ (53,260) $ — $ 2,989,760 March 31, 2021 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Allowance for Credit Losses Held-to-Maturity: U.S. Government and agency obligations $ 339 $ 6 $ — $ 345 $ — Municipal bonds 381,136 17,740 (1,481) 397,395 (61) Corporate bonds 3,190 — (7) 3,183 (37) Mortgage-backed or related securities 57,290 1,668 (286) 58,672 — $ 441,955 $ 19,414 $ (1,774) $ 459,595 $ (98) December 31, 2020 Amortized Cost Fair Trading: Corporate bonds $ 27,203 $ 24,980 $ 27,203 $ 24,980 December 31, 2020 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Allowance for Credit Losses Fair Value Available-for-Sale: U.S. Government and agency obligations $ 141,668 $ 1,002 $ (935) $ — $ 141,735 Municipal bonds 283,997 19,523 (2) — 303,518 Corporate bonds 219,086 2,762 (79) — 221,769 Mortgage-backed or related securities 1,602,033 45,179 (1,060) — 1,646,152 Asset-backed securities 9,405 77 (63) — 9,419 $ 2,256,189 $ 68,543 $ (2,139) $ — $ 2,322,593 December 31, 2020 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Allowance for Credit Losses Held-to-Maturity: U.S. Government and agency obligations $ 340 $ 7 $ — $ 347 $ — Municipal bonds 370,998 24,130 (94) 395,034 (59) Corporate bonds 3,222 — (12) 3,210 (35) Mortgage-backed or related securities 47,247 2,843 — 50,090 — $ 421,807 $ 26,980 $ (106) $ 448,681 $ (94)
Schedule of Securities with Continuous Loss Position	At March 31, 2021 and December 31, 2020, the gross unrealized losses and the fair value for securities available-for-sale aggregated by the length of time that individual securities have been in a continuous unrealized loss position were as follows (in thousands): March 31, 2021 Less Than 12 Months 12 Months or More Total Fair Unrealized Losses Fair Unrealized Losses Fair Unrealized Losses Available-for-Sale: U.S. Government and agency obligations $ 3,090 $ (10) $ 43,952 $ (806) $ 47,042 $ (816) Municipal bonds 50,710 (1,232) 8,403 (96) 59,113 (1,328) Corporate bonds 24,406 (286) 996 (4) 25,402 (290) Mortgage-backed or related securities 863,848 (34,608) 501,048 (16,216) 1,364,896 (50,824) Asset-backed securities 3,748 (2) — — 3,748 (2) $ 945,802 $ (36,138) $ 554,399 $ (17,122) $ 1,500,201 $ (53,260) December 31, 2020 Less Than 12 Months 12 Months or More Total Fair Unrealized Losses Fair Unrealized Losses Fair Unrealized Losses Available-for-Sale: U.S. Government and agency obligations $ 3,126 $ (8) $ 50,603 $ (927) $ 53,729 $ (935) Municipal bonds 495 (2) — — 495 (2) Corporate bonds 3,586 (79) — — 3,586 (79) Mortgage-backed or related securities 181,871 (1,046) 2,337 (14) 184,208 (1,060) Asset-backed securities — — 5,676 (63) 5,676 (63) $ 189,078 $ (1,135) $ 58,616 $ (1,004) $ 247,694 $ (2,139)
Schedule of Realized Gain (Loss)	The following table presents gross gains and losses on sales of securities available-for-sale (in thousands): Three Months Ended 2021 2020 Available-for-Sale: Gross Gains $ 595 $ 78 Gross Losses (110) — Balance, end of the period $ 485 $ 78
Schedule of Securities by Contractual Maturity Date	The amortized cost and estimated fair value of securities at March 31, 2021, 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, 2021 Trading Available-for-Sale Held-to-Maturity Amortized Fair Amortized Fair Amortized Fair Maturing in one year or less $ — $ — $ 158,605 $ 158,816 $ 5,609 $ 5,671 Maturing after one year through five years — — 178,983 187,427 54,888 57,069 Maturing after five years through ten years — — 680,138 675,201 33,435 35,387 Maturing after ten years through twenty years 27,203 25,039 276,682 285,450 152,353 155,651 Maturing after twenty years — — 1,702,494 1,682,866 195,670 205,817 $ 27,203 $ 25,039 $ 2,996,902 $ 2,989,760 $ 441,955 $ 459,595
Schedule of Pledged Securities	The following table presents, as of March 31, 2021, investment securities which were pledged to secure borrowings, public deposits or other obligations as permitted or required by law (in thousands): March 31, 2021 Carrying Value Amortized Cost Fair Purpose or beneficiary: State and local governments public deposits $ 206,699 $ 205,752 $ 218,842 Interest rate swap counterparties 28,385 27,749 28,550 Repurchase agreements 245,018 250,440 245,018 Other 2,588 2,588 2,648 Total pledged securities $ 482,690 $ 486,529 $ 495,058
Debt Instrument, Credit Rating	The Company monitors the credit quality of held-to-maturity debt securities through the use of credit rating. Credit ratings are reviewed and updated quarterly. The following table summarizes the amortized cost of held-to-maturity debt securities by credit rating at March 31, 2021 and December 31, 2020 (in thousands): March 31, 2021 U.S. Government and agency obligations Municipal bonds Corporate bonds Mortgage-backed or related securities Total AAA/AA/A $ — $ 349,687 $ 500 $ — $ 350,187 Not Rated 339 31,449 2,690 57,290 91,768 $ 339 $ 381,136 $ 3,190 $ 57,290 $ 441,955 December 31, 2020 U.S. Government and agency obligations Municipal bonds Corporate bonds Mortgage-backed or related securities Total AAA/AA/A $ — $ 349,123 $ 500 $ — $ 349,623 Not Rated 340 21,875 2,722 47,247 72,184 $ 340 $ 370,998 $ 3,222 $ 47,247 $ 421,807
Debt Securities, Held-to-maturity, Allowance for Credit Loss	The following table presents the activity in the allowance for credit losses for held-to-maturity debt securities by major type for the three months ended March 31, 2021 and March 31, 2020 (in thousands): For the Three Months Ended March 31, 2021 U.S. Government and agency obligations Municipal bonds Corporate bonds Mortgage-backed or related securities Total Allowance for credit losses - securities Beginning Balance $ — $ 59 $ 35 $ — $ 94 Provision for credit losses — 2 2 — 4 Ending Balance $ — $ 61 $ 37 $ — $ 98 For the Three Months Ended March 31, 2020 U.S. Government and agency obligations Municipal bonds Corporate bonds Mortgage-backed or related securities Total Allowance for credit losses - securities Beginning Balance $ — $ — $ — $ — $ — Impact of adopting ASC 326 — 28 35 — 63 Provision for credit losses — 33 2 — 35 Ending Balance $ — $ 61 $ 37 $ — $ 98

LOANS RECEIVABLE AND THE ALLO_2

LOANS RECEIVABLE AND THE ALLOWANCE FOR CREDIT LOSSES (Tables)	3 Months Ended
	Mar. 31, 2021
Receivables [Abstract]
Schedule of Loans Receivable, Including Loans Held for Sale	at March 31, 2021 and December 31, 2020 by class (dollars in thousands). March 31, 2021 December 31, 2020 Amount Percent of Total Amount Percent of Total Commercial real estate: Owner-occupied $ 1,045,656 10.5 % $ 1,076,467 10.9 % Investment properties 1,931,805 19.4 1,955,684 19.8 Small balance CRE 639,330 6.4 573,849 5.8 Multifamily real estate 433,775 4.3 428,223 4.4 Construction, land and land development: Commercial construction 199,037 2.0 228,937 2.3 Multifamily construction 305,694 3.1 305,527 3.1 One- to four-family construction 542,840 5.5 507,810 5.1 Land and land development 266,730 2.7 248,915 2.5 Commercial business: Commercial business (1) 2,376,594 23.9 2,178,461 22.1 Small business scored 717,502 7.2 743,451 7.5 Agricultural business, including secured by farmland (2) 262,410 2.6 299,949 3.0 One- to four-family residential 655,627 6.6 717,939 7.3 Consumer: Consumer—home equity revolving lines of credit 466,132 4.7 491,812 5.0 Consumer—other 104,565 1.1 113,958 1.2 Total loans 9,947,697 100.0 % 9,870,982 100.0 % Less allowance for credit losses - loans (156,054) (167,279) Net loans $ 9,791,643 $ 9,703,703 (1) Includes $1.28 billion and $1.04 billion of U.S. Small Business Administration (SBA) Paycheck Protection Program (PPP) loans as of March 31, 2021 and December 31, 2020, respectively. (2) Includes $36.3 million of PPP loans as of March 31, 2021 and none as of December 31, 2020.
Schedule of Troubled Debt Restructurings	The following table presents new TDRs that occurred during the three months ended March 31, 2020 (dollars in thousands): Three months ended March 31, 2020 Number of Pre- Post- Recorded Investment Commercial business: Commercial business 2 4,796 4,796 Total 2 $ 4,796 $ 4,796
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 by class and by grade as of March 31, 2021 and December 31, 2020 (in thousands). Revolving loans that are converted to term loans are treated as new originations in the table below and are presented by year of origination. Term loans that are renewed or extended for periods longer than 90 days are presented as a new origination in the year of the most recent renewal or extension. March 31, 2021 Term Loans by Year of Origination Revolving Loans Total Loans By class: 2021 2020 2019 2018 2017 Prior Commercial real estate - owner occupied Risk Rating Pass $ 39,192 $ 236,836 $ 158,294 $ 147,397 $ 98,352 $ 266,316 $ 5,455 $ 951,842 Special Mention — — 16,835 — 2,217 87 — 19,139 Substandard 45 7,096 24,526 2,329 2,311 38,368 — 74,675 Doubtful — — — — — — — — Loss — — — — — — — — Total Commercial real estate - owner occupied $ 39,237 $ 243,932 $ 199,655 $ 149,726 $ 102,880 $ 304,771 $ 5,455 $ 1,045,656 Commercial real estate - investment properties Risk Rating Pass $ 41,181 $ 238,095 $ 260,934 $ 284,975 $ 226,762 $ 711,557 $ 20,001 $ 1,783,505 Special Mention — — — — — 11,079 — 11,079 Substandard 422 28,529 11,383 20,864 36,212 39,811 — 137,221 Doubtful — — — — — — — — Loss — — — — — — — — Total Commercial real estate - investment properties $ 41,603 $ 266,624 $ 272,317 $ 305,839 $ 262,974 $ 762,447 $ 20,001 $ 1,931,805 Multifamily real estate Risk Rating Pass $ 16,005 $ 76,245 $ 71,073 $ 37,683 $ 93,037 $ 133,912 $ 2,080 $ 430,035 Special Mention — — — — — — — — Substandard — 2,312 1,428 — — — — 3,740 Doubtful — — — — — — — — Loss — — — — — — — — Total Multifamily real estate $ 16,005 $ 78,557 $ 72,501 $ 37,683 $ 93,037 $ 133,912 $ 2,080 $ 433,775 March 31, 2021 Term Loans by Year of Origination Revolving Loans Total Loans By class: 2021 2020 2019 2018 2017 Prior Commercial construction Risk Rating Pass $ 4,182 $ 94,483 $ 42,572 $ 38,566 $ 332 $ 527 $ — $ 180,662 Special Mention — — 5,967 — — — — 5,967 Substandard 3,507 — 3,938 4,865 — 98 — 12,408 Doubtful — — — — — — — — Loss — — — — — — — — Total Commercial construction $ 7,689 $ 94,483 $ 52,477 $ 43,431 $ 332 $ 625 $ — $ 199,037 Multifamily construction Risk Rating Pass $ 26,801 $ 84,144 $ 128,336 $ 51,514 $ 14,899 $ — $ — $ 305,694 Special Mention — — — — — — — — Substandard — — — — — — — — Doubtful — — — — — — — — Loss — — — — — — — — Total Multifamily construction $ 26,801 $ 84,144 $ 128,336 $ 51,514 $ 14,899 $ — $ — $ 305,694 One- to four- family construction Risk Rating Pass $ 204,174 $ 324,068 $ 10,374 $ — $ — $ — $ 3,537 $ 542,153 Special Mention — — — — — — — — Substandard 356 — 331 — — — — 687 Doubtful — — — — — — — — Loss — — — — — — — — Total One- to four- family construction $ 204,530 $ 324,068 $ 10,705 $ — $ — $ — $ 3,537 $ 542,840 March 31, 2021 Term Loans by Year of Origination Revolving Loans Total Loans By class: 2021 2020 2019 2018 2017 Prior Land and land development Risk Rating Pass $ 50,665 $ 141,075 $ 26,180 $ 12,004 $ 6,567 $ 10,249 $ 16,751 $ 263,491 Special Mention — — — — — — — — Substandard 2,869 14 28 141 187 — — 3,239 Doubtful — — — — — — — — Loss — — — — — — — — Total Land and land development $ 53,534 $ 141,089 $ 26,208 $ 12,145 $ 6,754 $ 10,249 $ 16,751 $ 266,730 Commercial business Risk Rating Pass $ 440,419 $ 1,103,935 $ 211,237 $ 191,647 $ 62,188 $ 100,296 $ 211,777 $ 2,321,499 Special Mention 75 96 3,184 — 752 104 10,487 14,698 Substandard 2,235 3,620 4,912 18,140 4,860 1,583 5,047 40,397 Doubtful — — — — — — — — Loss — — — — — — — — Total Commercial business $ 442,729 $ 1,107,651 $ 219,333 $ 209,787 $ 67,800 $ 101,983 $ 227,311 $ 2,376,594 Agricultural business including secured by farmland Risk Rating Pass $ 12,322 $ 31,316 $ 55,503 $ 29,215 $ 20,206 $ 44,027 $ 61,005 $ 253,594 Special Mention — — — — 810 — — 810 Substandard — 445 2,548 803 144 2,175 1,891 8,006 Doubtful — — — — — — — — Loss — — — — — — — — Total Agricultural business including secured by farmland $ 12,322 $ 31,761 $ 58,051 $ 30,018 $ 21,160 $ 46,202 $ 62,896 $ 262,410 December 31, 2020 Term Loans by Year of Origination Revolving Loans Total Loans By class: 2020 2019 2018 2017 2016 Prior Commercial real estate - owner occupied Risk Rating Pass $ 243,100 $ 156,838 $ 156,817 $ 122,484 $ 92,312 $ 212,792 $ 3,379 $ 987,722 Special Mention — 4,560 — 2,251 — 1,869 149 8,829 Substandard 7,923 26,914 3,040 2,516 11,731 27,792 — 79,916 Doubtful — — — — — — — — Loss — — — — — — — — Total Commercial real estate - owner occupied $ 251,023 $ 188,312 $ 159,857 $ 127,251 $ 104,043 $ 242,453 $ 3,528 $ 1,076,467 Commercial real estate - investment properties Risk Rating Pass $ 237,553 $ 262,543 $ 299,452 $ 218,018 $ 278,348 $ 502,914 $ 20,062 $ 1,818,890 Special Mention — 2,712 — — 2,730 1,856 — 7,298 Substandard 19,812 11,418 20,352 36,310 23,027 18,577 — 129,496 Doubtful — — — — — — — — Loss — — — — — — — — Total Commercial real estate - investment properties $ 257,365 $ 276,673 $ 319,804 $ 254,328 $ 304,105 $ 523,347 $ 20,062 $ 1,955,684 Multifamily real estate Risk Rating Pass $ 78,632 $ 69,825 $ 39,343 $ 93,442 $ 44,395 $ 96,863 $ 1,983 $ 424,483 Special Mention — — — — — — — — Substandard 2,312 1,428 — — — — — 3,740 Doubtful — — — — — — — — Loss — — — — — — — — Total Multifamily real estate $ 80,944 $ 71,253 $ 39,343 $ 93,442 $ 44,395 $ 96,863 $ 1,983 $ 428,223 December 31, 2020 Term Loans by Year of Origination Revolving Loans Total Loans By class: 2020 2019 2018 2017 2016 Prior Commercial construction Risk Rating Pass $ 83,506 $ 67,152 $ 41,299 $ 6,038 $ 2,158 $ 1,129 $ — $ 201,282 Special Mention — 5,963 — — — — — 5,963 Substandard 12,913 3,808 4,873 — 98 — — 21,692 Doubtful — — — — — — — — Loss — — — — — — — — Total Commercial construction $ 96,419 $ 76,923 $ 46,172 $ 6,038 $ 2,256 $ 1,129 $ — $ 228,937 Multifamily construction Risk Rating Pass $ 79,710 $ 151,141 $ 59,744 $ 14,932 $ — $ — $ — $ 305,527 Special Mention — — — — — — — — Substandard — — — — — — — — Doubtful — — — — — — — — Loss — — — — — — — — Total Multifamily construction $ 79,710 $ 151,141 $ 59,744 $ 14,932 $ — $ — $ — $ 305,527 One- to four- family construction Risk Rating Pass $ 461,294 $ 35,910 $ — $ — $ — $ — $ 7,581 $ 504,785 Special Mention 1,563 — — — — — 630 2,193 Substandard 501 331 — — — — — 832 Doubtful — — — — — — — — Loss — — — — — — — — Total One- to four- family construction $ 463,358 $ 36,241 $ — $ — $ — $ — $ 8,211 $ 507,810 December 31, 2020 Term Loans by Year of Origination Revolving Loans Total Loans By class: 2020 2019 2018 2017 2016 Prior Land and land development Risk Rating Pass $ 156,450 $ 37,397 $ 16,560 $ 6,801 $ 6,264 $ 4,840 $ 17,020 $ 245,332 Special Mention — — — — — — — — Substandard 14 30 3,047 190 — 302 — 3,583 Doubtful — — — — — — — — Loss — — — — — — — — Total Land and land development $ 156,464 $ 37,427 $ 19,607 $ 6,991 $ 6,264 $ 5,142 $ 17,020 $ 248,915 Commercial business Risk Rating Pass $ 1,243,276 $ 230,845 $ 203,051 $ 65,524 $ 38,757 $ 66,206 $ 264,741 $ 2,112,400 Special Mention 103 412 — 829 — 115 9,507 10,966 Substandard 6,624 14,413 18,569 5,224 1,320 453 8,492 55,095 Doubtful — — — — — — — — Loss — — — — — — — — Total Commercial business $ 1,250,003 $ 245,670 $ 221,620 $ 71,577 $ 40,077 $ 66,774 $ 282,740 $ 2,178,461 Agricultural business including secured by farmland Risk Rating Pass $ 32,032 $ 62,058 $ 31,381 $ 22,635 $ 22,394 $ 24,950 $ 91,660 $ 287,110 Special Mention — — — 810 — 537 — 1,347 Substandard 1,542 2,652 1,076 163 675 3,049 2,335 11,492 Doubtful — — — — — — — — Loss — — — — — — — — Total Agricultural business including secured by farmland $ 33,574 $ 64,710 $ 32,457 $ 23,608 $ 23,069 $ 28,536 $ 93,995 $ 299,949 The following tables present the Company’s portfolio of non-risk-rated loans by class and delinquency status as of March 31, 2021 and December 31, 2020 (in thousands). Revolving loans that are converted to term loans are treated as new originations in the table below and are presented by year of origination. Term loans that are renewed or extended for periods longer than 90 days are presented as a new origination in the year of the most recent renewal or extension. March 31, 2021 Term Loans by Year of Origination Revolving Loans Total Loans By class: 2021 2020 2019 2018 2017 Prior Small balance CRE Past Due Category Current $ 16,636 $ 86,223 $ 83,030 $ 89,631 $ 83,972 $ 275,125 $ 1,059 $ 635,676 30-59 Days Past Due — — — — — 895 — 895 60-89 Days Past Due — — — — — 1,978 — 1,978 90 Days + Past Due — — — — 558 223 — 781 Total small balance CRE $ 16,636 $ 86,223 $ 83,030 $ 89,631 $ 84,530 $ 278,221 $ 1,059 $ 639,330 Small business scored Past Due Category Current $ 36,376 $ 148,553 $ 134,717 $ 114,934 $ 78,944 $ 99,736 $ 100,192 $ 713,452 30-59 Days Past Due 50 17 139 694 82 357 121 1,460 60-89 Days Past Due — 755 54 89 47 — 3 948 90 Days + Past Due — 130 18 280 617 597 — 1,642 Total small business scored $ 36,426 $ 149,455 $ 134,928 $ 115,997 $ 79,690 $ 100,690 $ 100,316 $ 717,502 One- to four- family residential Past Due Category Current $ 16,134 $ 113,853 $ 80,610 $ 79,090 $ 82,592 $ 276,047 $ 2,740 $ 651,066 30-59 Days Past Due — 277 — 247 369 94 — 987 60-89 Days Past Due — — — 19 — 2 — 21 90 Days + Past Due 41 — 972 174 — 2,366 — 3,553 Total One- to four- family residential $ 16,175 $ 114,130 $ 81,582 $ 79,530 $ 82,961 $ 278,509 $ 2,740 $ 655,627 March 31, 2021 Term Loans by Year of Origination Revolving Loans Total Loans By class: 2021 2020 2019 2018 2017 Prior Consumer—home equity revolving lines of credit Past Due Category Current $ 8,652 $ 1,216 $ 3,046 $ 3,089 $ 2,484 $ 2,888 $ 442,660 $ 464,035 30-59 Days Past Due — — 64 — — 193 207 464 60-89 Days Past Due — — — — 109 — — 109 90 Days + Past Due — — 413 196 127 556 232 1,524 Total Consumer—home equity revolving lines of credit $ 8,652 $ 1,216 $ 3,523 $ 3,285 $ 2,720 $ 3,637 $ 443,099 $ 466,132 Consumer-other Past Due Category Current $ 2,738 $ 19,754 $ 11,549 $ 12,375 $ 9,931 $ 24,136 $ 23,893 $ 104,376 30-59 Days Past Due — — — 13 2 56 60 131 60-89 Days Past Due — — 27 4 — 10 17 58 90 Days + Past Due — — — — — — — — Total Consumer-other $ 2,738 $ 19,754 $ 11,576 $ 12,392 $ 9,933 $ 24,202 $ 23,970 $ 104,565 December 31, 2020 Term Loans by Year of Origination Revolving Loans Total Loans By class: 2020 2019 2018 2017 2016 Prior Small balance CRE Past Due Category Current $ 56,544 $ 80,090 $ 84,749 $ 77,637 $ 68,791 $ 202,653 $ 2,550 $ 573,014 30-59 Days Past Due — — — — — — — — 60-89 Days Past Due — — — 45 — — — 45 90 Days + Past Due — — — 567 — 223 — 790 Total small balance CRE $ 56,544 $ 80,090 $ 84,749 $ 78,249 $ 68,791 $ 202,876 $ 2,550 $ 573,849 Small business scored Past Due Category Current $ 157,161 $ 145,037 $ 126,578 $ 89,734 $ 47,909 $ 63,347 $ 109,287 $ 739,053 30-59 Days Past Due 129 62 310 723 4 1 230 1,459 60-89 Days Past Due 98 147 3 140 — 352 151 891 90 Days + Past Due 73 228 800 484 169 248 46 2,048 Total small business scored $ 157,461 $ 145,474 $ 127,691 $ 91,081 $ 48,082 $ 63,948 $ 109,714 $ 743,451 One- to four- family residential Past Due Category Current $ 105,411 $ 90,425 $ 92,232 $ 101,491 $ 60,738 $ 254,850 $ 3,164 $ 708,311 30-59 Days Past Due 1,051 — 1,302 829 — 1,438 — 4,620 60-89 Days Past Due — — 19 — — 936 — 955 90 Days + Past Due — 114 1,185 456 169 2,129 — 4,053 Total One- to four- family residential $ 106,462 $ 90,539 $ 94,738 $ 102,776 $ 60,907 $ 259,353 $ 3,164 $ 717,939 December 31, 2020 Term Loans by Year of Origination Revolving Loans Total Loans By class: 2020 2019 2018 2017 2016 Prior Consumer—home equity revolving lines of credit Past Due Category Current $ 10,522 $ 2,617 $ 2,553 $ 3,359 $ 1,372 $ 2,154 $ 466,490 $ 489,067 30-59 Days Past Due — — — — — 50 409 459 60-89 Days Past Due — 202 — — — 237 — 439 90 Days + Past Due — 312 198 564 286 255 232 1,847 Total Consumer—home equity revolving lines of credit $ 10,522 $ 3,131 $ 2,751 $ 3,923 $ 1,658 $ 2,696 $ 467,131 $ 491,812 Consumer-other Past Due Category Current $ 21,811 $ 13,377 $ 13,936 $ 11,433 $ 8,575 $ 18,802 $ 25,460 $ 113,394 30-59 Days Past Due 48 35 15 22 46 26 44 236 60-89 Days Past Due 242 — — 33 21 14 18 328 90 Days + Past Due — — — — — — — — Total Consumer-other $ 22,101 $ 13,412 $ 13,951 $ 11,488 $ 8,642 $ 18,842 $ 25,522 $ 113,958
Loans, Collateral Dependent [Table Text Block]	The following tables provide the amortized cost basis of collateral-dependent loans as of March 31, 2021 and December 31, 2020 (in thousands). Our collateral dependent loans presented in the tables below have no significant concentrations by property type or location. March 31, 2021 Real Estate Accounts Receivable Equipment Inventory Total Commercial real estate: Owner-occupied $ 4,684 $ — $ — $ — $ 4,684 Investment properties 12,568 — — — 12,568 Small balance CRE 3,090 — — — 3,090 Commercial business Commercial business 557 — 73 — 630 Small business scored 43 — 47 — 90 Agricultural business, including secured by farmland 427 — 930 — 1,357 Total $ 21,369 $ — $ 1,050 $ — $ 22,419
Schedule of Age Analysis of the Company's Past Due Loans	The following tables present the Company’s portfolio of non-risk-rated loans by class and delinquency status as of March 31, 2021 and December 31, 2020 (in thousands). Revolving loans that are converted to term loans are treated as new originations in the table below and are presented by year of origination. Term loans that are renewed or extended for periods longer than 90 days are presented as a new origination in the year of the most recent renewal or extension. March 31, 2021 Term Loans by Year of Origination Revolving Loans Total Loans By class: 2021 2020 2019 2018 2017 Prior Small balance CRE Past Due Category Current $ 16,636 $ 86,223 $ 83,030 $ 89,631 $ 83,972 $ 275,125 $ 1,059 $ 635,676 30-59 Days Past Due — — — — — 895 — 895 60-89 Days Past Due — — — — — 1,978 — 1,978 90 Days + Past Due — — — — 558 223 — 781 Total small balance CRE $ 16,636 $ 86,223 $ 83,030 $ 89,631 $ 84,530 $ 278,221 $ 1,059 $ 639,330 Small business scored Past Due Category Current $ 36,376 $ 148,553 $ 134,717 $ 114,934 $ 78,944 $ 99,736 $ 100,192 $ 713,452 30-59 Days Past Due 50 17 139 694 82 357 121 1,460 60-89 Days Past Due — 755 54 89 47 — 3 948 90 Days + Past Due — 130 18 280 617 597 — 1,642 Total small business scored $ 36,426 $ 149,455 $ 134,928 $ 115,997 $ 79,690 $ 100,690 $ 100,316 $ 717,502 One- to four- family residential Past Due Category Current $ 16,134 $ 113,853 $ 80,610 $ 79,090 $ 82,592 $ 276,047 $ 2,740 $ 651,066 30-59 Days Past Due — 277 — 247 369 94 — 987 60-89 Days Past Due — — — 19 — 2 — 21 90 Days + Past Due 41 — 972 174 — 2,366 — 3,553 Total One- to four- family residential $ 16,175 $ 114,130 $ 81,582 $ 79,530 $ 82,961 $ 278,509 $ 2,740 $ 655,627 March 31, 2021 Term Loans by Year of Origination Revolving Loans Total Loans By class: 2021 2020 2019 2018 2017 Prior Consumer—home equity revolving lines of credit Past Due Category Current $ 8,652 $ 1,216 $ 3,046 $ 3,089 $ 2,484 $ 2,888 $ 442,660 $ 464,035 30-59 Days Past Due — — 64 — — 193 207 464 60-89 Days Past Due — — — — 109 — — 109 90 Days + Past Due — — 413 196 127 556 232 1,524 Total Consumer—home equity revolving lines of credit $ 8,652 $ 1,216 $ 3,523 $ 3,285 $ 2,720 $ 3,637 $ 443,099 $ 466,132 Consumer-other Past Due Category Current $ 2,738 $ 19,754 $ 11,549 $ 12,375 $ 9,931 $ 24,136 $ 23,893 $ 104,376 30-59 Days Past Due — — — 13 2 56 60 131 60-89 Days Past Due — — 27 4 — 10 17 58 90 Days + Past Due — — — — — — — — Total Consumer-other $ 2,738 $ 19,754 $ 11,576 $ 12,392 $ 9,933 $ 24,202 $ 23,970 $ 104,565 The following tables provide additional detail on the age analysis of the Company’s past due loans as of March 31, 2021 and December 31, 2020 (in thousands): March 31, 2021 30-59 Days 60-89 Days 90 Days or More Total Current Total Loans Non-accrual with no Allowance Total Non-accrual (1) Loans 90 Days or More Past Due and Accruing Commercial real estate: Owner-occupied $ 14,824 $ 4,687 $ 587 $ 20,098 $ 1,025,558 $ 1,045,656 $ 4,687 $ 5,416 $ — Investment properties 1 1,322 3,709 5,032 1,926,773 1,931,805 12,568 12,568 — Small balance CRE 895 1,978 781 3,654 635,676 639,330 3,086 3,631 — Multifamily real estate — — — — 433,775 433,775 — — — Construction, land and land development: Commercial construction — — 98 98 198,939 199,037 — 98 — Multifamily construction — — — — 305,694 305,694 — — — One- to four-family construction 170 — — 170 542,670 542,840 — 687 — Land and land development — — 14 14 266,716 266,730 — 201 — Commercial business Commercial business 159 558 228 945 2,375,649 2,376,594 628 1,266 — Small business scored 1,460 948 1,642 4,050 713,452 717,502 90 2,928 37 Agricultural business, including secured by farmland — — 1,536 1,536 260,874 262,410 1,357 1,536 — One- to four-family residential 987 21 3,553 4,561 651,066 655,627 — 4,456 1,524 Consumer: Consumer—home equity revolving lines of credit 464 109 1,524 2,097 464,035 466,132 — 2,234 — Consumer—other 131 58 — 189 104,376 104,565 — 10 — Total $ 19,091 $ 9,681 $ 13,672 $ 42,444 $ 9,905,253 $ 9,947,697 $ 22,416 $ 35,031 $ 1,561 December 31, 2020 30-59 Days 60-89 Days 90 Days or More Total Current Total Loans Non-accrual with no Allowance Total Non-accrual (1) Loans 90 Days or More Past Due and Accruing Commercial real estate: Owner-occupied $ — $ 182 $ 1,447 $ 1,629 $ 1,074,838 $ 1,076,467 $ 7,509 $ 8,429 $ — Investment properties — — 7,981 7,981 1,947,703 1,955,684 8,979 8,979 — Small balance CRE — 45 790 835 573,014 573,849 567 791 — Multifamily real estate — — — — 428,223 428,223 — — — Construction, land and land development: Commercial construction — — 98 98 228,839 228,937 — 98 — Multifamily construction — — — — 305,527 305,527 — — — One- to four-family construction 356 — 331 687 507,123 507,810 — 331 — Land and land development — — 317 317 248,598 248,915 302 507 — Commercial business Commercial business 3,247 31 2,088 5,366 2,173,095 2,178,461 555 1,988 889 Small business scored 1,459 891 2,048 4,398 739,053 743,451 91 3,419 136 Agricultural business, including secured by farmland 298 37 1,548 1,883 298,066 299,949 1,412 1,743 — One-to four-family residential 4,620 955 4,053 9,628 708,311 717,939 171 3,556 1,899 Consumer: Consumer secured by one- to four-family 459 439 1,847 2,745 489,067 491,812 — 2,697 130 Consumer—other 236 328 — 564 113,394 113,958 — 22 — Total $ 10,675 $ 2,908 $ 22,548 $ 36,131 $ 9,834,851 $ 9,870,982 $ 19,586 $ 32,560 $ 3,054
Allowance for Credit Losses on Financing Receivables	The following tables provide the activity in the allowance for credit losses by portfolio segment for the three months ended March 31, 2021 and 2020 (in thousands): For the Three Months Ended March 31, 2021 Commercial Multifamily Construction and Land Commercial Business Agricultural Business One- to Four-Family Residential Consumer Unallocated Total Allowance for credit losses: Beginning balance $ 57,791 $ 3,893 $ 41,295 $ 35,007 $ 4,914 $ 9,913 $ 14,466 $ — $ 167,279 Provision/(recapture) for credit losses 5,359 474 (4,955) (3,786) (297) (2,038) (2,792) — (8,035) Recoveries 24 — 100 979 — 113 296 — 1,512 Charge-offs (3,763) — — (789) — — (150) — (4,702) Ending balance $ 59,411 $ 4,367 $ 36,440 $ 31,411 $ 4,617 $ 7,988 $ 11,820 $ — $ 156,054 The changes in the allowance for credit losses during the three months ended March 31, 2021 were primarily the result of the $8.0 million recapture of provision for credit losses recorded as well as the net charge offs of $3.2 million recognized during the current quarter. The recapture of provision for credit losses for the current quarter primarily reflects the decrease in loan balances, excluding the increase in PPP loans, as well as improvement in the forecasted economic indicators. For the Three Months Ended March 31, 2020 Commercial Multifamily Construction and Land Commercial Business Agricultural Business One- to Four-Family Residential Consumer Unallocated Total Allowance for credit losses: Beginning balance $ 30,591 $ 4,754 $ 22,994 $ 23,370 $ 4,120 $ 4,136 $ 8,202 $ 2,392 $ 100,559 Impact of Adopting ASC 326 (2,864) (2,204) 2,515 3,010 (351) 7,125 2,973 (2,392) 7,812 Provision/(recapture) for credit losses 1,545 321 8,708 6,447 (1,006) 539 5,159 — 21,713 Recoveries 167 — — 205 1,750 148 96 — 2,366 Charge-offs (100) (66) — (1,384) — (64) (348) — (1,962) Ending balance $ 29,339 $ 2,805 $ 34,217 $ 31,648 $ 4,513 $ 11,884 $ 16,082 $ — $ 130,488

GOODWILL, OTHER INTANGIBLE AS_2

GOODWILL, OTHER INTANGIBLE ASSETS AND MORTGAGE SERVICING RIGHTS (Tables)	3 Months Ended
	Mar. 31, 2021
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, 2021 and the year ended December 31, 2020 (in thousands): Goodwill CDI Total Balance, December 31, 2019 $ 373,121 $ 29,158 $ 402,279 Amortization — (7,732) (7,732) Balance, December 31, 2020 373,121 21,426 394,547 Amortization — (1,711) (1,711) Balance, March 31, 2021 $ 373,121 $ 19,715 $ 392,836
Schedule of Estimated Annual Amortization Expense	The following table presents the estimated amortization expense with respect to CDI as of March 31, 2021 for the periods indicated (in thousands): Estimated Amortization Remainder of 2021 $ 4,860 2022 5,317 2023 3,814 2024 2,659 2025 1,575 Thereafter 1,490 $ 19,715
Schedule of Servicing Assets at Amortized Value	An analysis of our mortgage servicing rights for the three months ended March 31, 2021 and 2020 is presented below (in thousands): Three Months Ended 2021 2020 Balance, beginning of the period $ 15,223 $ 14,148 Additions—amounts capitalized 2,010 1,420 Additions—through purchase 27 63 Amortization (1) (1,853) (1,354) Balance, end of the period (2) $ 15,407 $ 14,277 (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 both March 31, 2021 and 2020.

REAL ESTATE OWNED, NET (Tables)

REAL ESTATE OWNED, NET (Tables)	3 Months Ended
	Mar. 31, 2021
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, 2021 and 2020 (in thousands): Three Months Ended 2021 2020 Balance, beginning of the period $ 816 $ 814 Additions from loan foreclosures — 1,588 Proceeds from dispositions of REO (783) — Gain on sale of REO 307 — Balance, end of the period $ 340 $ 2,402

DEPOSITS (Tables)

DEPOSITS (Tables)	3 Months Ended
	Mar. 31, 2021
Banking and Thrift, Other Disclosures [Abstract]
Schedule of Deposit Liabilities	Deposits consisted of the following at March 31, 2021 and December 31, 2020 (in thousands): March 31, 2021 December 31, 2020 Non-interest-bearing accounts $ 5,994,693 $ 5,492,924 Interest-bearing checking 1,722,085 1,569,435 Regular savings accounts 2,597,731 2,398,482 Money market accounts 2,327,380 2,191,135 Total interest-bearing transaction and saving accounts 6,647,196 6,159,052 Certificates of deposit: Certificates of deposit less than or equal to $250,000 711,424 718,256 Certificates of deposit greater than $250,000 195,554 197,064 Total certificates of deposit (1) 906,978 915,320 Total deposits $ 13,548,867 $ 12,567,296 Included in total deposits: Public fund transaction and savings accounts $ 321,042 $ 302,875 Public fund interest-bearing certificates 51,021 59,127 Total public deposits $ 372,063 $ 362,002 Total brokered deposits $ — $ — (1) Certificates of deposit include $34,000 and $58,000 of acquisition premiums at March 31, 2021 and December 31, 2020, respectively.
Maturities of Certificates of Deposit	Scheduled maturities and weighted average interest rates of certificates of deposit at March 31, 2021 are as follows (dollars in thousands): March 31, 2021 Amount Weighted Average Rate Maturing in one year or less $ 705,004 0.71 % Maturing after one year through two years 116,565 1.29 Maturing after two years through three years 61,618 0.81 Maturing after three years through four years 13,244 1.89 Maturing after four years through five years 8,684 0.72 Maturing after five years 1,863 0.95 Total certificates of deposit $ 906,978 0.81 %

FAIR VALUE OF FINANCIAL INSTR_2

FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)	3 Months Ended
	Mar. 31, 2021
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, 2021 and December 31, 2020, whether or not measured at fair value in the Consolidated Statements of Financial Condition (dollars in thousands): March 31, 2021 December 31, 2020 Level Carrying Estimated Carrying Estimated Assets: Cash and cash equivalents 1 $ 1,649,927 $ 1,649,927 $ 1,234,183 $ 1,234,183 Securities—trading 3 25,039 25,039 24,980 24,980 Securities—available-for-sale 2 2,989,760 2,989,760 2,322,593 2,322,593 Securities—held-to-maturity 2 418,871 436,484 410,038 436,882 Securities—held-to-maturity 3 23,084 23,111 11,769 11,799 Loans held for sale 2 135,263 136,873 243,795 245,667 Loans receivable 3 9,947,697 9,967,242 9,870,982 9,810,293 FHLB stock 3 14,001 14,001 16,358 16,358 Bank-owned life insurance 1 191,388 191,388 191,830 191,830 Mortgage servicing rights 3 15,407 21,176 15,223 18,084 Derivatives: Interest rate swaps 2 25,246 25,246 39,066 39,066 Interest rate lock and forward sales commitments 2,3 6,186 6,186 5,641 5,641 Liabilities: Demand, interest checking and money market accounts 2 10,044,158 10,044,158 9,253,494 9,253,494 Regular savings 2 2,597,731 2,597,731 2,398,482 2,398,482 Certificates of deposit 2 906,978 910,069 915,320 919,920 FHLB advances 2 100,000 101,908 150,000 152,779 Other borrowings 2 216,260 216,260 184,785 184,785 Subordinated notes, net 3 98,290 98,290 98,201 98,201 Junior subordinated debentures 3 117,248 117,248 116,974 116,974 Derivatives: Interest rate swaps 2 17,923 17,923 22,336 22,336 Interest rate lock and forward sales commitments 2 85 85 1,755 1,755
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, 2021 and December 31, 2020 (in thousands): March 31, 2021 Level 1 Level 2 Level 3 Total Assets: Securities—trading Corporate bonds (Trust Preferred Securities) $ — $ — $ 25,039 $ 25,039 Securities—available-for-sale U.S. Government and agency obligations — 62,846 — 62,846 Municipal bonds — 300,735 — 300,735 Corporate bonds — 245,428 — 245,428 Mortgage-backed or related securities — 2,377,003 — 2,377,003 Asset-backed securities — 3,748 — 3,748 — 2,989,760 — 2,989,760 Loans held for sale — 59,993 — 59,993 Derivatives Interest rate swaps — 25,246 — 25,246 Interest rate lock and forward sales commitments — 3,249 2,937 6,186 $ — $ 3,078,248 $ 27,976 $ 3,106,224 Liabilities: Junior subordinated debentures $ — $ — $ 117,248 $ 117,248 Derivatives Interest rate swaps — 17,923 — 17,923 Interest rate lock and forward sales commitments — 85 — 85 $ — $ 18,008 $ 117,248 $ 135,256 December 31, 2020 Level 1 Level 2 Level 3 Total Assets: Securities—trading Corporate bonds (Trust Preferred Securities) $ — $ — $ 24,980 $ 24,980 Securities—available-for-sale U.S. Government and agency obligations — 141,735 — 141,735 Municipal bonds — 303,518 — 303,518 Corporate bonds — 221,769 — 221,769 Mortgage-backed securities — 1,646,152 — 1,646,152 Asset-backed securities — 9,419 — 9,419 — 2,322,593 — 2,322,593 Loans held for sale — 133,554 — 133,554 Derivatives Interest rate swaps — 39,066 — 39,066 Interest rate lock and forward sales commitments — 420 5,221 5,641 $ — $ 2,495,633 $ 30,201 $ 2,525,834 Liabilities: Junior subordinated debentures, net of unamortized deferred issuance costs $ — $ — $ 116,974 $ 116,974 Derivatives Interest rate swaps — 22,336 — 22,336 Interest rate lock and forward sales commitments — 1,755 — 1,755 $ — $ 24,091 $ 116,974 $ 141,065
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, 2021 and December 31, 2020: Weighted Average Rate / Range Financial Instruments Valuation Techniques Unobservable Inputs March 31, 2021 December 31, 2020 Corporate bonds (TPS securities) Discounted cash flows Discount rate 4.19 % 4.24 % Junior subordinated debentures Discounted cash flows Discount rate 4.19 % 4.24 % Loans individually evaluated Collateral valuations Discount to appraised value 8.5% to 20.0% 0.0% to 20.0% REO Appraisals Discount to appraised value 68.35 % 51.86 % Interest rate lock commitments Pricing model Pull-through rate 89.15 % 86.35 %
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, 2021 and 2020 (in thousands): Three Months Ended March 31, 2021 Level 3 Fair Value Inputs TPS Securities Borrowings—Junior Subordinated Debentures Interest Rate Lock Commitments Beginning balance $ 24,980 $ 116,974 $ 5,221 Total gains or losses recognized Assets gains (losses) 59 — (2,284) Liabilities losses — 274 — Ending balance at March 31, 2021 $ 25,039 $ 117,248 $ 2,937 Three Months Ended March 31, 2020 Level 3 Fair Value Inputs TPS Securities Borrowings—Junior Subordinated Debentures Interest Rate Lock Commitments Beginning balance $ 25,636 $ 119,304 $ 791 Total gains or losses recognized Assets (losses) gains (4,596) — 1,726 Liabilities gains — (19,509) — Ending balance at March 31, 2020 $ 21,040 $ 99,795 $ 2,517
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, 2021 and December 31, 2020 (in thousands): March 31, 2021 Level 1 Level 2 Level 3 Total Loans individually evaluated $ — $ — $ 627 $ 627 REO — — 340 340 December 31, 2020 Level 1 Level 2 Level 3 Total Loans individually evaluated $ — $ — $ 3,482 $ 3,482 REO — — 816 816 The following table presents the losses resulting from non-recurring fair value adjustments for the three months ended March 31, 2021 and 2020 (in thousands): Three Months Ended March 31, 2021 2020 Loans individually evaluated $ 302 $ — REO — — Total loss from non-recurring measurements $ 302 $ —

INCOME TAXES AND DEFERRED TAX_2

INCOME TAXES AND DEFERRED TAXES INCOME TAXES AND DEFERRED TAXES (Tables)	3 Months Ended
	Mar. 31, 2021
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, 2021 and December 31, 2020 (in thousands): March 31, 2021 December 31, 2020 Tax credit investments $ 32,613 $ 33,528 Unfunded commitments—tax credit investments 15,383 18,306 The following table presents other information related to the Company’s tax credit investments for the three months ended March 31, 2021 and 2020 (in thousands): Three Months Ended March 31, 2021 2020 Tax credits and other tax benefits recognized $ 1,068 $ 1,007 Tax credit amortization expense included in provision for income taxes 915 809

CALCULATION OF WEIGHTED AVERA_2

CALCULATION OF WEIGHTED AVERAGE SHARES OUTSTANDING FOR EARNINGS PER SHARE (EPS) (Tables)	3 Months Ended
	Mar. 31, 2021
Earnings Per Share [Abstract]
Schedule of Basic and Diluted Weighted Shares Outstanding	The following table reconciles basic to diluted weighted average shares outstanding used to calculate earnings per share data for the three months ended March 31, 2021 and 2020 (in thousands, except shares and per share data): Three Months Ended 2021 2020 Net income $ 46,855 $ 16,882 Basic weighted average shares outstanding 34,973,383 35,463,541 Dilutive effect of unvested restricted stock 330,100 176,922 Diluted weighted shares outstanding 35,303,483 35,640,463 Earnings per common share Basic $ 1.34 $ 0.48 Diluted $ 1.33 $ 0.47

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Tables)	3 Months Ended
	Mar. 31, 2021
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, 2021 December 31, 2020 Commitments to extend credit $ 3,357,135 $ 3,207,072 Standby letters of credit and financial guarantees 21,493 18,415 Commitments to originate loans 134,759 101,426 Risk participation agreement 40,789 40,949 Derivatives also included in Note 14: Commitments to originate loans held for sale 165,236 169,653 Commitments to sell loans secured by one- to four-family residential properties 82,963 79,414 Commitments to sell securities related to mortgage banking activities 199,500 204,000

DERIVATIVES AND HEDGING (Tables

DERIVATIVES AND HEDGING (Tables)	3 Months Ended
	Mar. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivatives Designated in Hedge Relationships	As of March 31, 2021 and December 31, 2020, 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, 2021 December 31, 2020 March 31, 2021 December 31, 2020 Notional/ Fair Value (1) Notional/ Fair Value (1) Notional/ Fair Value (2) Notional/ Fair Value (2) Interest rate swaps $ 248 $ 5 $ 338 $ 9 $ 248 $ 5 $ 338 $ 9 (1) Included in Loans receivable on the Consolidated Statements of Financial Condition. (2) Included in Accrued expenses and other liabilities on the Consolidated Statements of Financial Condition.
Schedule of Derivatives Not Designated in Hedge Relationships	As of March 31, 2021 and December 31, 2020, 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, 2021 December 31, 2020 March 31, 2021 December 31, 2020 Notional/ Fair Value (1) Notional/ Fair Value (1) Notional/ Fair Value (2) Notional/ Fair Value (2) Interest rate swaps $ 458,118 $ 25,241 $ 451,760 $ 39,057 $ 458,118 $ 17,918 $ 451,760 $ 22,327 Mortgage loan commitments 139,668 2,937 140,390 5,221 62,267 85 72,511 199 Forward sales contracts 282,463 3,249 79,414 420 — — 204,000 1,556 $ 880,249 $ 31,427 $ 671,564 $ 44,698 $ 520,385 $ 18,003 $ 728,271 $ 24,082 (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 $246,000 at March 31, 2021 and $231,000 at December 31, 2020), which are included in Loans receivable. (2) Included in Accrued expenses and 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, 2021 and 2020 were as follows (in thousands): Location on Consolidated Three Months Ended 2021 2020 Mortgage loan commitments Mortgage banking operations $ (2,284) $ 1,726 Forward sales contracts Mortgage banking operations 3,011 (3,068) $ 727 $ (1,342)
Offsetting Assets and Liabilities	as of March 31, 2021 and December 31, 2020 (in thousands): March 31, 2021 Gross Amounts of Financial Instruments Not Offset in the Consolidated Statements of Financial Condition Gross Amounts Recognized Amounts offset Net Amounts Netting Adjustment Per Applicable Master Netting Agreements Fair Value Net Amount Derivative assets Interest rate swaps $ 25,246 $ — $ 25,246 $ — $ — $ 25,246 $ 25,246 $ — $ 25,246 $ — $ — $ 25,246 Derivative liabilities Interest rate swaps $ 23,877 $ (5,954) $ 17,923 $ — $ (12,881) $ 5,042 $ 23,877 $ (5,954) $ 17,923 $ — $ (12,881) $ 5,042 December 31, 2020 Gross Amounts of Financial Instruments Not Offset in the Consolidated Statements of Financial Condition Gross Amounts Recognized Amounts offset Net Amounts Netting Adjustment Per Applicable Master Netting Agreements Fair Value Net Amount Derivative assets Interest rate swaps $ 39,066 $ — $ 39,066 $ — $ — $ 39,066 $ 39,066 $ — $ 39,066 $ — $ — $ 39,066 Derivative liabilities Interest rate swaps $ 39,204 $ (16,868) $ 22,336 $ — $ (22,220) $ 116 $ 39,204 $ (16,868) $ 22,336 $ — $ (22,220) $ 116

REVENUE FROM CONTRACTS WITH C_2

REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables)	3 Months Ended
	Mar. 31, 2021
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, 2021 and 2020 are summarized as follows (in thousands): Three Months Ended 2021 2020 Deposit service charges $ 4,113 $ 4,832 Debit and credit card interchange fees 5,290 4,884 Debit and credit card expense (2,520) (1,932) Merchant services income 3,142 3,002 Merchant services expense (2,532) (2,436) Other service charges 1,446 1,453 Total deposit fees and other service charges $ 8,939 $ 9,803

SECURITIES (Schedule of Securit

SECURITIES (Schedule of Securities) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Schedule of Securities [Line Items]
Securities—trading, Amortized Cost	$ 27,203,000	$ 27,203,000
Securities—trading	25,039,000	24,980,000
Available-for-sale Securities, Amortized Cost	2,996,902,000	2,256,189,000
Available-for-sale Securities, Gross Unrealized Gains	46,118,000	68,543,000
Available-for-sale Securities, Gross Unrealized Losses	(53,260,000)	(2,139,000)
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	0	0
Securities—available-for-sale	2,989,760,000	2,322,593,000
Held-to-maturity Securities, Amortized Cost	441,955,000	421,807,000
Held-to-maturity Securities, Gross Unrealized Gains	19,414,000	26,980,000
Held-to-maturity Securities, Gross Unrealized Losses	1,774,000	106,000
Securities—held-to-maturity	459,595,000	448,681,000
Debt Securities, Held-to-maturity, Allowance for Credit Loss	98,000	(94,000)
debt securities, held-to-maturity, accrued interest receivable	2,700,000	3,000,000
Debt Securities, Available-for-Sale, Accrued Interest Receivable	8,200,000	6,900,000
Trading Securities, Unrealized Holding Gain	59,000
U.S. Government and agency obligations
Schedule of Securities [Line Items]
Available-for-sale Securities, Amortized Cost	62,922,000	141,668,000
Available-for-sale Securities, Gross Unrealized Gains	740,000	1,002,000
Available-for-sale Securities, Gross Unrealized Losses	(816,000)	(935,000)
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	0	0
Securities—available-for-sale	62,846,000	141,735,000
Held-to-maturity Securities, Amortized Cost	339,000	340,000
Held-to-maturity Securities, Gross Unrealized Gains	6,000	7,000
Held-to-maturity Securities, Gross Unrealized Losses	0	0
Securities—held-to-maturity	345,000	347,000
Debt Securities, Held-to-maturity, Allowance for Credit Loss	0	0	$ 0	$ 0
Municipal bonds
Schedule of Securities [Line Items]
Available-for-sale Securities, Amortized Cost	287,685,000	283,997,000
Available-for-sale Securities, Gross Unrealized Gains	14,378,000	19,523,000
Available-for-sale Securities, Gross Unrealized Losses	(1,328,000)	(2,000)
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	0	0
Securities—available-for-sale	300,735,000	303,518,000
Held-to-maturity Securities, Amortized Cost	381,136,000	370,998,000
Held-to-maturity Securities, Gross Unrealized Gains	17,740,000	24,130,000
Held-to-maturity Securities, Gross Unrealized Losses	1,481,000	94,000
Securities—held-to-maturity	397,395,000	395,034,000
Debt Securities, Held-to-maturity, Allowance for Credit Loss	61,000	59,000	61,000	0
Corporate bonds
Schedule of Securities [Line Items]
Securities—trading, Amortized Cost	27,203,000	27,203,000
Securities—trading	25,039,000	24,980,000
Available-for-sale Securities, Amortized Cost	243,428,000	219,086,000
Available-for-sale Securities, Gross Unrealized Gains	2,290,000	2,762,000
Available-for-sale Securities, Gross Unrealized Losses	(290,000)	(79,000)
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	0	0
Securities—available-for-sale	245,428,000	221,769,000
Held-to-maturity Securities, Amortized Cost	3,190,000	3,222,000
Held-to-maturity Securities, Gross Unrealized Gains	0	0
Held-to-maturity Securities, Gross Unrealized Losses	7,000	12,000
Securities—held-to-maturity	3,183,000	3,210,000
Debt Securities, Held-to-maturity, Allowance for Credit Loss	37,000	35,000	37,000	0
Mortgage-backed or related securities
Schedule of Securities [Line Items]
Available-for-sale Securities, Amortized Cost	2,399,117,000	1,602,033,000
Available-for-sale Securities, Gross Unrealized Gains	28,710,000	45,179,000
Available-for-sale Securities, Gross Unrealized Losses	(50,824,000)	(1,060,000)
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	0	0
Securities—available-for-sale	2,377,003,000	1,646,152,000
Held-to-maturity Securities, Amortized Cost	57,290,000	47,247,000
Held-to-maturity Securities, Gross Unrealized Gains	1,668,000	2,843,000
Held-to-maturity Securities, Gross Unrealized Losses	286,000	0
Securities—held-to-maturity	58,672,000	50,090,000
Debt Securities, Held-to-maturity, Allowance for Credit Loss	0	0	$ 0	$ 0
Asset-backed securities
Schedule of Securities [Line Items]
Available-for-sale Securities, Amortized Cost	3,750,000	9,405,000
Available-for-sale Securities, Gross Unrealized Gains	0	77,000
Available-for-sale Securities, Gross Unrealized Losses	(2,000)	(63,000)
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	0	0
Securities—available-for-sale	$ 3,748,000	$ 9,419,000

SECURITIES (Securities with Con

SECURITIES (Securities with Continuous Loss Position) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Schedule of Held-to-maturity Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 945,802	$ 189,078
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(36,138)	(1,135)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	554,399	58,616
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(17,122)	(1,004)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	1,500,201	247,694
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss, Total	53,260	2,139
U.S. Government and agency obligations
Schedule of Held-to-maturity Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	3,090	3,126
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(10)	(8)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	43,952	50,603
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(806)	(927)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	47,042	53,729
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss, Total	816	935
Municipal bonds
Schedule of Held-to-maturity Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	50,710	495
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1,232)	(2)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	8,403	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(96)	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	59,113	495
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss, Total	1,328	2
Corporate bonds
Schedule of Held-to-maturity Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	24,406	3,586
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(286)	(79)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	996	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(4)	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	25,402	3,586
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss, Total	290	79
Mortgage-backed or related securities
Schedule of Held-to-maturity Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	863,848	181,871
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(34,608)	(1,046)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	501,048	2,337
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(16,216)	(14)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	1,364,896	184,208
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss, Total	50,824	1,060
Asset-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	3,748	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(2)	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	0	5,676
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	(63)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	3,748	5,676
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss, Total	$ 2	$ 63

SECURITIES (Available-for-Sale

SECURITIES (Available-for-Sale Securities, Gross Gains and Losses on Sale) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Gain (Loss) on Securities [Line Items]
Available-for-sale Securities, Gross Realized Gains	$ 595	$ 78
Available-for-sale Securities, Gross Realized Losses	(110)	0
Available-for-sale Securities, Gross Realized Gain (Loss)	$ 485	$ 78

SECURITIES (Securities Debt Mat

SECURITIES (Securities Debt Maturities) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Trading Securities, Amortized Cost, Maturing in one year or less	$ 0
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	27,203
Trading Securities, Amortized Cost, Maturing after twenty years	0
Trading Securities, Amortized Cost	27,203	$ 27,203
Trading Securities, Fair Value, Maturing in one year or less	0
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	25,039
Trading Securities, Fair Value, Maturing after twenty years	0
Trading Securities, Fair Value	25,039	24,980
Available-for-sale Securities, Amortized Cost, Maturing in one year or less	158,605
Available-for-sale Securities, Amortized Cost, Maturing after one year through five years	178,983
Available-for-sale Securities, Amortized Cost, Maturing after five years through ten years	680,138
Available-for-sale Securities, Amortized Cost, Maturing after ten years through twenty years	276,682
Available-for-sale Securities, Amortized Cost, Maturing after twenty years	1,702,494
Available-for-sale Securities, Amortized Cost	2,996,902	2,256,189
Available-for-sale Securities, Fair Value, Maturing in one year or less	158,816
Available-for-sale Securities, Fair Value, Maturing after one year through five years	187,427
Available-for-sale Securities, Fair Value, Maturing after five years through ten years	675,201
Available-for-sale Securities, Fair Value, Maturing after ten years through twenty years	285,450
Available-for-sale Securities, Fair Value, Maturing after twenty years	1,682,866
Available-for-sale Securities, Fair Value	2,989,760	2,322,593
Held-to-maturity Securities, Amortized Cost, Maturing in one year or less	5,609
Held-to-maturity Securities, Amortized Cost, Maturing after one year through five years	54,888
Held-to-maturity Securities, Amortized Cost, Maturing after five years through ten years	33,435
Held-to-maturity Securities, Amortized Cost, Maturing after ten years through twenty years	152,353
Held-to-maturity Securities, Amortized Cost, Maturing after twenty years	195,670
Held-to-maturity Securities, Amortized Cost	441,955	421,807
Held-to-maturity Securities, Fair Value, Maturing in one year or less	5,671
Held-to-maturity Securities, Fair Value, Maturing after one year through five years	57,069
Held-to-maturity Securities, Fair Value, Maturing after five years through ten years	35,387
Held-to-maturity Securities, Fair Value, Maturing after ten years through twenty years	155,651
Held-to-maturity Securities, Fair Value, Maturing after twenty years	205,817
Debt Securities, Held-to-maturity, Fair Value	$ 459,595	$ 448,681

SECURITIES (Securities Pledged)

SECURITIES (Securities Pledged) (Details) $ in Thousands	Mar. 31, 2021USD ($)
Pledged Financial Instruments, Not Separately Reported, Securities [Abstract]
Securities pledged for State and Local Government Public Deposits, Carrying Value	$ 206,699
Securities pledged for Interest Rate Swap Counterparties, Carrying Value	28,385
Securities pledged for Repurchase Agreements, Carrying Value	245,018
Pledged Financial Instruments, Not Separately Reported, Interest-bearing Deposits for Other Debt Facilities	2,588
Total pledged securities, Carrying Value	482,690
Securities pledged for State and Local Government public deposits, Amortized Cost	205,752
Securities pledged for Interest Rate Swap Counterparties, Amortized Cost	27,749
Securities pledged for Repurchase Agreements, Amortized Cost	250,440
Pledged Financial Instruments, Not Separately Reported, Interest-bearing Deposits for Other Debt Facilities, Amortized Cost	2,588
Total pledged securities, Amortized Cost	486,529
Securities pledged for State and Local Government Public Deposits, Fair Value	218,842
Securities pledged for Interest Rate Swap Counterparties, Fair Value	28,550
Securities pledged for Retail Repurchase Agreements, Fair Value	245,018
Pledged Financial Instruments, Not Separately Reported, Interest-bearing Deposits for Other Debt Facilities, Fair Value	2,648
Total pledged securities, Fair Value	$ 495,058

SECURITIES (Textual) (Details)

SECURITIES (Textual) (Details)	3 Months Ended
	Mar. 31, 2021USD ($)numberOfSecuritiesnumberOfSalesOfSecurities	Mar. 31, 2020USD ($)numberOfSalesOfSecuritiesnumberOfSecurities	Dec. 31, 2020numberOfSecurities
Investments, Debt and Equity Securities [Abstract]
Trading Securities, Number of Securities on Nonaccrual Status	0		0
Trading Securities, Unrealized Holding Loss | $		$ (4,600,000)
Trading Securities, Unrealized Holding Gain | $	$ 59,000
Debt Securities, Available-for-sale [Abstract]
Available-for-sale Securities, Number of Securities in Unrealized Loss Position	81		54
Available-for-sale Securities, Number of Securities in Nonaccrual Status	0		0
Held-to-maturity Securities [Abstract]
Held-to-maturity Securities, Number of Securities Sold | numberOfSalesOfSecurities	0	0
Held-to-maturity Securities, Number of Securities in Nonaccrual Status	0		0
Trading Securities, Number of Securities Sold	0	0
Trading Securities, Unrealized Holding Loss | $		$ 4,600,000

SECURITIES (Debt Securities, He

SECURITIES (Debt Securities, Held-to-Maturity, Credit Rating) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	$ 441,955	$ 421,807
U.S. Government and agency obligations
Financing Receivable, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	339	340
Municipal bonds
Financing Receivable, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	381,136	370,998
Corporate bonds
Financing Receivable, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	3,190	3,222
Mortgage-backed or related securities
Financing Receivable, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	57,290	47,247
Standard & Poor's, AAA to A Rating
Financing Receivable, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	350,187	349,623
Standard & Poor's, AAA to A Rating | U.S. Government and agency obligations
Financing Receivable, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	0	0
Standard & Poor's, AAA to A Rating | Municipal bonds
Financing Receivable, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	349,687	349,123
Standard & Poor's, AAA to A Rating | Corporate bonds
Financing Receivable, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	500	500
Standard & Poor's, AAA to A Rating | Mortgage-backed or related securities
Financing Receivable, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	0	0
Standard & Poor's, Not Rated
Financing Receivable, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	91,768	72,184
Standard & Poor's, Not Rated | U.S. Government and agency obligations
Financing Receivable, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	339	340
Standard & Poor's, Not Rated | Municipal bonds
Financing Receivable, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	31,449	21,875
Standard & Poor's, Not Rated | Corporate bonds
Financing Receivable, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	2,690	2,722
Standard & Poor's, Not Rated | Mortgage-backed or related securities
Financing Receivable, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	$ 57,290	$ 47,247

SECURITIES (Debt Securities, _2

SECURITIES (Debt Securities, Held-to-Maturity, Allowance for Credit Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ (94)
Debt Securities, Held-to-maturity, Allowance for Credit Loss	(94)
New credit standard (ASC 326) - impact in year of adoption		$ 11,215
Ending Balance	98
U.S. Government and agency obligations
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Beginning Balance	0	0
Debt Securities, Held-to-maturity, Allowance for Credit Loss	0	0
New credit standard (ASC 326) - impact in year of adoption		0
Provision for credit losses	0	0
Ending Balance	0	0
Municipal bonds
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Beginning Balance	59	0
Debt Securities, Held-to-maturity, Allowance for Credit Loss	59	61
New credit standard (ASC 326) - impact in year of adoption		28
Provision for credit losses	2	33
Ending Balance	61	61
Corporate bonds
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Beginning Balance	35	0
Debt Securities, Held-to-maturity, Allowance for Credit Loss	35	37
New credit standard (ASC 326) - impact in year of adoption		35
Provision for credit losses	2	2
Ending Balance	37	37
Mortgage-backed or related securities
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Beginning Balance	0	0
Debt Securities, Held-to-maturity, Allowance for Credit Loss	0	0
New credit standard (ASC 326) - impact in year of adoption		0
Provision for credit losses	0	0
Ending Balance	0	0
Held-to-maturity Securities
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Beginning Balance	(94)	0
Debt Securities, Held-to-maturity, Allowance for Credit Loss	98	98
New credit standard (ASC 326) - impact in year of adoption		63
Provision for credit losses	4	35
Ending Balance	$ 98	$ 98

LOANS RECEIVABLE AND THE ALLO_3

LOANS RECEIVABLE AND THE ALLOWANCE FOR CREDIT LOSSES (Loans by Type) (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 9,947,697,000	$ 9,870,982,000
Allowance for credit losses - loans	(156,054,000)	(167,279,000)	$ (130,488,000)	$ (100,559,000)
Net loans	$ 9,791,643,000	9,703,703,000
Percent of total loans	100.00%
Unearned loan fees in excess of unamortized costs	$ 35,500,000	25,600,000
Discount on acquired loans, net	13,900,000	16,100,000
Financing Receivable, Accrued Interest, before Allowance for Credit Loss	38,200,000	36.6
Financing Receivable, Troubled Debt Restructuring	7,600,000	7,900,000
Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable		9,870,982,000
Allowance for credit losses - loans		(167,279,000)
Net loans		$ 9,703,703,000
Percent of total loans		100.00%
Commerical real estate - owner-occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 1,045,656,000	$ 1,076,467,000
Percent of total loans	10.50%
Commerical real estate - owner-occupied [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable		$ 1,076,467,000
Percent of total loans		10.90%
Commercial real estate - investment properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 1,931,805,000	$ 1,955,684,000
Percent of total loans	19.40%
Commercial real estate - investment properties | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable		$ 1,955,684,000
Percent of total loans		19.80%
Small Balance Commercial Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 639,330,000
Percent of total loans	6.40%
Small Balance Commercial Real Estate Loans [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable		$ 573,849,000
Percent of total loans		5.80%
Multifamily Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 433,775,000	$ 428,223,000
Allowance for credit losses - loans	$ (4,367,000)	(3,893,000)	(2,805,000)	(4,754,000)
Percent of total loans	4.30%
Multifamily Real Estate | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable		$ 428,223,000
Percent of total loans		4.40%
Commercial construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 199,037,000	$ 228,937,000
Percent of total loans	2.00%
Commercial construction | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable		$ 228,937,000
Percent of total loans		2.30%
Multifamily construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 305,694,000	$ 305,527,000
Percent of total loans	3.10%
Multifamily construction | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable		$ 305,527,000
Percent of total loans		3.10%
One- to four- family construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 542,840,000	$ 507,810,000
Percent of total loans	5.50%
One- to four- family construction | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable		$ 507,810,000
Percent of total loans		5.10%
Land and Land Development Type [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 266,730,000
Percent of total loans	2.70%
Land and Land Development Type [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable		$ 248,915,000
Percent of total loans		2.50%
Land and land development - residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 266,730,000	$ 248,915,000
Commercial Business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	2,376,594,000	2,178,461,000
Allowance for credit losses - loans	$ (31,411,000)	(35,007,000)	(31,648,000)	(23,370,000)
Percent of total loans	23.90%
Commercial Business | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable		$ 2,178,461,000
Percent of total loans		22.10%
Small business scored
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 717,502,000	$ 743,451,000
Percent of total loans	7.20%
Small business scored | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable		$ 743,451,000
Percent of total loans		7.50%
Agricultural business, including secured by farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 262,410,000	$ 299,949,000
Allowance for credit losses - loans	$ (4,617,000)	(4,914,000)	(4,513,000)	(4,120,000)
Percent of total loans	2.60%
Agricultural business, including secured by farmland | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable		$ 299,949,000
Percent of total loans		3.00%
One- to four-family residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 655,627,000	$ 717,939,000
Allowance for credit losses - loans	$ (7,988,000)	(9,913,000)	$ (11,884,000)	$ (4,136,000)
Percent of total loans	6.60%
One- to four-family residential [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable		$ 717,939,000
Percent of total loans		7.30%
Consumer secured by one- to four-family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 466,132,000	$ 491,812,000
Percent of total loans	4.70%
Consumer secured by one- to four-family [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable		$ 491,812,000
Percent of total loans		5.00%
Consumer Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 104,565,000	$ 113,958,000
Percent of total loans	1.10%
Consumer Loan [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable		$ 113,958,000
Percent of total loans		1.20%

LOANS RECEIVABLE AND THE ALLO_4

LOANS RECEIVABLE AND THE ALLOWANCE FOR CREDIT LOSSES (Troubled Debt Restructuring) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021USD ($)	Mar. 31, 2020USD ($)contract
Financing Receivable, Troubled Debt Restructuring [Line Items]
Commitments to advance funds related to TDRs, maximum additional amounts	$ 0
Number of Contracts | contract		2
Pre-modification Outstanding Recorded Investment		$ 4,796
Post-modification Outstanding Recorded Investment		4,796
TDRs Which Incurred a Payment Default	$ 0	$ 0
Commercial Business
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract		2
Pre-modification Outstanding Recorded Investment		$ 4,796
Post-modification Outstanding Recorded Investment		$ 4,796

LOANS RECEIVABLE AND THE ALLO_5

LOANS RECEIVABLE AND THE ALLOWANCE FOR CREDIT LOSSES (Newly Restructured Loans) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020contract	Mar. 31, 2021USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Commitments to advance funds related to TDRs, maximum additional amounts | $		$ 0
Number of Contracts | contract	2

LOANS RECEIVABLE AND THE ALLO_6

LOANS RECEIVABLE AND THE ALLOWANCE FOR CREDIT LOSSES LOANS RECEIVABLE AND THE ALLOWANCE FOR CREDIT LOSSES (Troubled Debt Restructuring Which Incurred Payment Default) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
TDRs Which Incurred a Payment Default	$ 0	$ 0

LOANS RECEIVABLE AND THE ALLO_7

LOANS RECEIVABLE AND THE ALLOWANCE FOR CREDIT LOSSES (Risk-Rated and Non-Risk Rated Loans by Grade and Other Characteristic) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	$ 9,947,697	$ 9,870,982
Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	39,237	251,023
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	243,932	188,312
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	199,655	159,857
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	149,726	127,251
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	102,880	104,043
Prior	304,771	242,453
Revolving Loans	5,455	3,528
Total Loans	1,045,656	1,076,467
Loans receivable	1,045,656	1,076,467
Commercial real estate - investment properties
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	41,603	257,365
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	266,624	276,673
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	272,317	319,804
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	305,839	254,328
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	262,974	304,105
Prior	762,447	523,347
Revolving Loans	20,001	20,062
Total Loans	1,931,805	1,955,684
Loans receivable	1,931,805	1,955,684
Small balance CRE
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	16,636	56,544
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	86,223	80,090
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	83,030	84,749
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	89,631	78,249
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	84,530	68,791
Prior	278,221	202,876
Revolving Loans	1,059	2,550
Total Loans	639,330	573,849
Loans receivable	639,330	573,849
Multifamily Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	16,005	80,944
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	78,557	71,253
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	72,501	39,343
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	37,683	93,442
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	93,037	44,395
Prior	133,912	96,863
Revolving Loans	2,080	1,983
Total Loans	433,775	428,223
Loans receivable	433,775	428,223
Commercial construction
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	7,689	96,419
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	94,483	76,923
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	52,477	46,172
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	43,431	6,038
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	332	2,256
Prior	625	1,129
Revolving Loans	0	0
Total Loans	199,037	228,937
Loans receivable	199,037	228,937
Multifamily construction
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	26,801	79,710
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	84,144	151,141
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	128,336	59,744
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	51,514	14,932
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	14,899	0
Prior	0	0
Revolving Loans	0	0
Total Loans	305,694	305,527
Loans receivable	305,694	305,527
One- to four- family construction
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	204,530	463,358
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	324,068	36,241
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	10,705	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	3,537	8,211
Total Loans	542,840	507,810
Loans receivable	542,840	507,810
Land and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	266,730	248,915
Commercial Business
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	442,729	1,250,003
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,107,651	245,670
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	219,333	221,620
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	209,787	71,577
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	67,800	40,077
Prior	101,983	66,774
Revolving Loans	227,311	282,740
Total Loans	2,376,594	2,178,461
Loans receivable	2,376,594	2,178,461
Small business scored
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	36,426	157,461
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	149,455	145,474
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	134,928	127,691
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	115,997	91,081
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	79,690	48,082
Prior	100,690	63,948
Revolving Loans	100,316	109,714
Total Loans	717,502	743,451
Loans receivable	717,502	743,451
Agricultural business, including secured by farmland
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	12,322	33,574
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	31,761	64,710
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	58,051	32,457
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	30,018	23,608
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	21,160	23,069
Prior	46,202	28,536
Revolving Loans	62,896	93,995
Total Loans	262,410	299,949
Loans receivable	262,410	299,949
One- to four- family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	16,175	106,462
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	114,130	90,539
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	81,582	94,738
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	79,530	102,776
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	82,961	60,907
Prior	278,509	259,353
Revolving Loans	2,740	3,164
Total Loans	655,627	717,939
Loans receivable	655,627	717,939
Consumer—home equity revolving lines of credit
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	8,652	10,522
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,216	3,131
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	3,523	2,751
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	3,285	3,923
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	2,720	1,658
Prior	3,637	2,696
Revolving Loans	443,099	467,131
Total Loans	466,132	491,812
Consumer secured by one- to four-family
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable	466,132	491,812
Consumer-other
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	2,738	22,101
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	19,754	13,412
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	11,576	13,951
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	12,392	11,488
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	9,933	8,642
Prior	24,202	18,842
Revolving Loans	23,970	25,522
Total Loans	104,565	113,958
Land and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	53,534	156,464
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	141,089	37,427
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	26,208	19,607
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	12,145	6,991
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	6,754	6,264
Prior	10,249	5,142
Revolving Loans	16,751	17,020
Total Loans	266,730	248,915
Pass | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	39,192	243,100
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	236,836	156,838
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	158,294	156,817
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	147,397	122,484
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	98,352	92,312
Prior	266,316	212,792
Revolving Loans	5,455	3,379
Total Loans	951,842	987,722
Pass | Commercial real estate - investment properties
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	41,181	237,553
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	238,095	262,543
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	260,934	299,452
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	284,975	218,018
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	226,762	278,348
Prior	711,557	502,914
Revolving Loans	20,001	20,062
Total Loans	1,783,505	1,818,890
Pass | Multifamily Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	16,005	78,632
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	76,245	69,825
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	71,073	39,343
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	37,683	93,442
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	93,037	44,395
Prior	133,912	96,863
Revolving Loans	2,080	1,983
Total Loans	430,035	424,483
Pass | Commercial construction
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	4,182	83,506
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	94,483	67,152
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	42,572	41,299
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	38,566	6,038
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	332	2,158
Prior	527	1,129
Revolving Loans	0	0
Total Loans	180,662	201,282
Pass | Multifamily construction
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	26,801	79,710
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	84,144	151,141
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	128,336	59,744
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	51,514	14,932
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	14,899	0
Prior	0	0
Revolving Loans	0	0
Total Loans	305,694	305,527
Pass | One- to four- family construction
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	204,174	461,294
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	324,068	35,910
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	10,374	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	3,537	7,581
Total Loans	542,153	504,785
Pass | Commercial Business
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	440,419	1,243,276
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,103,935	230,845
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	211,237	203,051
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	191,647	65,524
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	62,188	38,757
Prior	100,296	66,206
Revolving Loans	211,777	264,741
Total Loans	2,321,499	2,112,400
Pass | Agricultural business, including secured by farmland
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	12,322	32,032
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	31,316	62,058
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	55,503	31,381
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	29,215	22,635
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	20,206	22,394
Prior	44,027	24,950
Revolving Loans	61,005	91,660
Total Loans	253,594	287,110
Pass | Land and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	50,665	156,450
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	141,075	37,397
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	26,180	16,560
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	12,004	6,801
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	6,567	6,264
Prior	10,249	4,840
Revolving Loans	16,751	17,020
Total Loans	263,491	245,332
Special Mention | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	4,560
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	16,835	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	2,251
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	2,217	0
Prior	87	1,869
Revolving Loans	0	149
Total Loans	19,139	8,829
Special Mention | Commercial real estate - investment properties
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	2,712
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	2,730
Prior	11,079	1,856
Revolving Loans	0	0
Total Loans	11,079	7,298
Special Mention | Multifamily Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	0	0
Special Mention | Commercial construction
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	5,963
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	5,967	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	5,967	5,963
Special Mention | Multifamily construction
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	0	0
Special Mention | One- to four- family construction
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	1,563
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	630
Total Loans	0	2,193
Special Mention | Commercial Business
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	75	103
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	96	412
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	3,184	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	829
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	752	0
Prior	104	115
Revolving Loans	10,487	9,507
Total Loans	14,698	10,966
Special Mention | Agricultural business, including secured by farmland
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	810
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	810	0
Prior	0	537
Revolving Loans	0	0
Total Loans	810	1,347
Special Mention | Land and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	0	0
Substandard | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	45	7,923
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	7,096	26,914
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	24,526	3,040
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	2,329	2,516
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	2,311	11,731
Prior	38,368	27,792
Revolving Loans	0	0
Total Loans	74,675	79,916
Substandard | Commercial real estate - investment properties
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	422	19,812
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	28,529	11,418
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	11,383	20,352
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	20,864	36,310
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	36,212	23,027
Prior	39,811	18,577
Revolving Loans	0	0
Total Loans	137,221	129,496
Substandard | Multifamily Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	2,312
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	2,312	1,428
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,428	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	3,740	3,740
Substandard | Commercial construction
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	3,507	12,913
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	3,808
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	3,938	4,873
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	4,865	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	98
Prior	98	0
Revolving Loans	0	0
Total Loans	12,408	21,692
Substandard | Multifamily construction
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	0	0
Substandard | One- to four- family construction
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	356	501
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	331
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	331	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	687	832
Substandard | Commercial Business
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	2,235	6,624
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	3,620	14,413
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	4,912	18,569
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	18,140	5,224
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	4,860	1,320
Prior	1,583	453
Revolving Loans	5,047	8,492
Total Loans	40,397	55,095
Substandard | Agricultural business, including secured by farmland
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	1,542
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	445	2,652
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	2,548	1,076
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	803	163
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	144	675
Prior	2,175	3,049
Revolving Loans	1,891	2,335
Total Loans	8,006	11,492
Substandard | Land and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	2,869	14
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	14	30
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	28	3,047
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	141	190
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	187	0
Prior	0	302
Revolving Loans	0	0
Total Loans	3,239	3,583
Doubtful | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	0	0
Doubtful | Commercial real estate - investment properties
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	0	0
Doubtful | Multifamily Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	0	0
Doubtful | Commercial construction
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	0	0
Doubtful | Multifamily construction
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	0	0
Doubtful | One- to four- family construction
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	0	0
Doubtful | Commercial Business
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	0	0
Doubtful | Agricultural business, including secured by farmland
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	0	0
Doubtful | Land and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	0	0
Loss | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	0	0
Loss | Commercial real estate - investment properties
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	0	0
Loss | Multifamily Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	0	0
Loss | Commercial construction
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	0	0
Loss | Multifamily construction
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	0	0
Loss | One- to four- family construction
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	0	0
Loss | Commercial Business
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	0	0
Loss | Agricultural business, including secured by farmland
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	0	0
Loss | Land and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	0	0
Current | Small balance CRE
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	16,636	56,544
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	86,223	80,090
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	83,030	84,749
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	89,631	77,637
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	83,972	68,791
Prior	275,125	202,653
Revolving Loans	1,059	2,550
Total Loans	635,676	573,014
Current | Small business scored
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	36,376	157,161
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	148,553	145,037
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	134,717	126,578
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	114,934	89,734
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	78,944	47,909
Prior	99,736	63,347
Revolving Loans	100,192	109,287
Total Loans	713,452	739,053
Current | One- to four- family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	16,134	105,411
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	113,853	90,425
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	80,610	92,232
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	79,090	101,491
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	82,592	60,738
Prior	276,047	254,850
Revolving Loans	2,740	3,164
Total Loans	651,066	708,311
Current | Consumer—home equity revolving lines of credit
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	8,652	10,522
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,216	2,617
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	3,046	2,553
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	3,089	3,359
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	2,484	1,372
Prior	2,888	2,154
Revolving Loans	442,660	466,490
Total Loans	464,035	489,067
Current | Consumer-other
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	2,738	21,811
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	19,754	13,377
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	11,549	13,936
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	12,375	11,433
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	9,931	8,575
Prior	24,136	18,802
Revolving Loans	23,893	25,460
Total Loans	104,376	113,394
30-59 Days Past Due | Small balance CRE
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	895	0
Revolving Loans	0	0
Total Loans	895	0
30-59 Days Past Due | Small business scored
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	50	129
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	17	62
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	139	310
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	694	723
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	82	4
Prior	357	1
Revolving Loans	121	230
Total Loans	1,460	1,459
30-59 Days Past Due | One- to four- family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	1,051
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	277	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	1,302
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	247	829
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	369	0
Prior	94	1,438
Revolving Loans	0	0
Total Loans	987	4,620
30-59 Days Past Due | Consumer—home equity revolving lines of credit
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	64	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	193	50
Revolving Loans	207	409
Total Loans	464	459
30-59 Days Past Due | Consumer-other
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	48
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	35
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	15
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	13	22
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	2	46
Prior	56	26
Revolving Loans	60	44
Total Loans	131	236
60-89 Days Past Due | Small balance CRE
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	45
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	1,978	0
Revolving Loans	0	0
Total Loans	1,978	45
60-89 Days Past Due | Small business scored
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	98
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	755	147
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	54	3
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	89	140
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	47	0
Prior	0	352
Revolving Loans	3	151
Total Loans	948	891
60-89 Days Past Due | One- to four- family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	19
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	19	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	2	936
Revolving Loans	0	0
Total Loans	21	955
60-89 Days Past Due | Consumer—home equity revolving lines of credit
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	202
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	109	0
Prior	0	237
Revolving Loans	0	0
Total Loans	109	439
60-89 Days Past Due | Consumer-other
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	242
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	27	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	4	33
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	21
Prior	10	14
Revolving Loans	17	18
Total Loans	58	328
90 Days Past Due | Small balance CRE
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	567
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	558	0
Prior	223	223
Revolving Loans	0	0
Total Loans	781	790
90 Days Past Due | Small business scored
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	73
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	130	228
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	18	800
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	280	484
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	617	169
Prior	597	248
Revolving Loans	0	46
Total Loans	1,642	2,048
90 Days Past Due | One- to four- family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	41	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	114
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	972	1,185
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	174	456
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	169
Prior	2,366	2,129
Revolving Loans	0	0
Total Loans	3,553	4,053
90 Days Past Due | Consumer—home equity revolving lines of credit
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	312
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	413	198
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	196	564
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	127	286
Prior	556	255
Revolving Loans	232	232
Total Loans	1,524	1,847
90 Days Past Due | Consumer-other
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Prior	0	0
Revolving Loans	0	0
Total Loans	$ 0	$ 0

LOANS RECEIVABLE AND THE ALLO_8

LOANS RECEIVABLE AND THE ALLOWANCE FOR CREDIT LOSSES (Collateral Secured) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	$ 22,419	$ 19,609
Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	21,369	18,578
Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	0	0
Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	1,050	1,031
Inventories
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	0	0
Owner-occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	4,684	7,506
Owner-occupied | Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	4,684	7,506
Owner-occupied | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	0	0
Owner-occupied | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	0	0
Owner-occupied | Inventories
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	0	0
Commercial real estate - investment properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	12,568	8,979
Commercial real estate - investment properties | Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	12,568	8,979
Commercial real estate - investment properties | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	0	0
Commercial real estate - investment properties | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	0	0
Commercial real estate - investment properties | Inventories
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	0	0
Small balance CRE
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	3,090	567
Small balance CRE | Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	3,090	567
Small balance CRE | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	0	0
Small balance CRE | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	0	0
Small balance CRE | Inventories
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	0	0
Residential Land and Land Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost		302
Residential Land and Land Development [Member] | Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost		302
Residential Land and Land Development [Member] | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost		0
Residential Land and Land Development [Member] | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost		0
Residential Land and Land Development [Member] | Inventories
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost		0
Commercial Business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	630	557
Commercial Business | Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	557	557
Commercial Business | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	0	0
Commercial Business | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	73	0
Commercial Business | Inventories
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	0	0
Small business scored
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	90	91
Small business scored | Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	43	44
Small business scored | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	0	0
Small business scored | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	47	47
Small business scored | Inventories
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	0	0
Agricultural Business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	1,357	1,411
Agricultural Business | Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	427	427
Agricultural Business | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	0	0
Agricultural Business | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	930	984
Agricultural Business | Inventories
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost	$ 0	0
One- to Four-Family Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost		196
One- to Four-Family Residential | Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost		196
One- to Four-Family Residential | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost		0
One- to Four-Family Residential | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost		0
One- to Four-Family Residential | Inventories
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral Dependent Loans, Amortized Cost		$ 0

LOANS RECEIVABLE AND THE ALLO_9

LOANS RECEIVABLE AND THE ALLOWANCE FOR CREDIT LOSSES (Age Analysis of Company's Past Due Loans) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Past Due	$ 42,444	$ 36,131
Current	9,905,253	9,834,851
Total loans	9,947,697	9,870,982
Non-accrual with no Allowance	22,416	19,586
Nonaccrual loans	35,031	32,560
Loans 90 days or more past due and still accruing	1,561	3,054
Commerical real estate - owner-occupied [Member]
Financing Receivable, Past Due [Line Items]
Past Due	20,098	1,629
Current	1,025,558	1,074,838
Total loans	1,045,656	1,076,467
Non-accrual with no Allowance	4,687	7,509
Nonaccrual loans	5,416	8,429
Loans 90 days or more past due and still accruing	0	0
Commercial real estate - investment properties
Financing Receivable, Past Due [Line Items]
Past Due	5,032	7,981
Current	1,926,773	1,947,703
Total loans	1,931,805	1,955,684
Non-accrual with no Allowance	12,568	8,979
Nonaccrual loans	12,568	8,979
Loans 90 days or more past due and still accruing	0	0
Small balance CRE
Financing Receivable, Past Due [Line Items]
Past Due	3,654	835
Current	635,676	573,014
Total loans	639,330	573,849
Non-accrual with no Allowance	3,086	567
Nonaccrual loans	3,631	791
Loans 90 days or more past due and still accruing	0	0
Multifamily Real Estate
Financing Receivable, Past Due [Line Items]
Past Due	0	0
Current	433,775	428,223
Total loans	433,775	428,223
Non-accrual with no Allowance	0	0
Nonaccrual loans	0	0
Loans 90 days or more past due and still accruing	0	0
Commercial construction
Financing Receivable, Past Due [Line Items]
Past Due	98	98
Current	198,939	228,839
Total loans	199,037	228,937
Non-accrual with no Allowance	0	0
Nonaccrual loans	98	98
Loans 90 days or more past due and still accruing	0	0
Multifamily construction
Financing Receivable, Past Due [Line Items]
Past Due	0	0
Current	305,694	305,527
Total loans	305,694	305,527
Non-accrual with no Allowance	0	0
Nonaccrual loans	0	0
Loans 90 days or more past due and still accruing	0	0
One- to four- family construction
Financing Receivable, Past Due [Line Items]
Past Due	170	687
Current	542,670	507,123
Total loans	542,840	507,810
Non-accrual with no Allowance	0	0
Nonaccrual loans	687	331
Loans 90 days or more past due and still accruing	0	0
Land and land development - residential [Member]
Financing Receivable, Past Due [Line Items]
Past Due	14	317
Current	266,716	248,598
Total loans	266,730	248,915
Non-accrual with no Allowance	0	302
Nonaccrual loans	201	507
Loans 90 days or more past due and still accruing	0	0
Commercial Business
Financing Receivable, Past Due [Line Items]
Past Due	945	5,366
Current	2,375,649	2,173,095
Total loans	2,376,594	2,178,461
Non-accrual with no Allowance	628	555
Nonaccrual loans	1,266	1,988
Loans 90 days or more past due and still accruing	0	889
Small business scored
Financing Receivable, Past Due [Line Items]
Past Due	4,050	4,398
Current	713,452	739,053
Total loans	717,502	743,451
Non-accrual with no Allowance	90	91
Nonaccrual loans	2,928	3,419
Loans 90 days or more past due and still accruing	37	136
Agricultural business, including secured by farmland
Financing Receivable, Past Due [Line Items]
Past Due	1,536	1,883
Current	260,874	298,066
Total loans	262,410	299,949
Non-accrual with no Allowance	1,357	1,412
Nonaccrual loans	1,536	1,743
Loans 90 days or more past due and still accruing	0	0
One- to four-family residential [Member]
Financing Receivable, Past Due [Line Items]
Past Due	4,561	9,628
Current	651,066	708,311
Total loans	655,627	717,939
Non-accrual with no Allowance	0	171
Nonaccrual loans	4,456	3,556
Loans 90 days or more past due and still accruing	1,524	1,899
Consumer secured by one- to four-family [Member]
Financing Receivable, Past Due [Line Items]
Past Due	2,097	2,745
Current	464,035	489,067
Total loans	466,132	491,812
Non-accrual with no Allowance	0	0
Nonaccrual loans	2,234	2,697
Loans 90 days or more past due and still accruing	0	130
Consumer Loan [Member]
Financing Receivable, Past Due [Line Items]
Past Due	189	564
Current	104,376	113,394
Total loans	104,565	113,958
Non-accrual with no Allowance	0	0
Nonaccrual loans	10	22
Loans 90 days or more past due and still accruing	0	0
30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due	19,091	10,675
30 to 59 Days Past Due [Member] | Commerical real estate - owner-occupied [Member]
Financing Receivable, Past Due [Line Items]
Past Due	14,824	0
30 to 59 Days Past Due [Member] | Commercial real estate - investment properties
Financing Receivable, Past Due [Line Items]
Past Due	1	0
30 to 59 Days Past Due [Member] | Small balance CRE
Financing Receivable, Past Due [Line Items]
Past Due	895	0
30 to 59 Days Past Due [Member] | Multifamily Real Estate
Financing Receivable, Past Due [Line Items]
Past Due	0	0
30 to 59 Days Past Due [Member] | Commercial construction
Financing Receivable, Past Due [Line Items]
Past Due	0	0
30 to 59 Days Past Due [Member] | Multifamily construction
Financing Receivable, Past Due [Line Items]
Past Due	0	0
30 to 59 Days Past Due [Member] | One- to four- family construction
Financing Receivable, Past Due [Line Items]
Past Due	170	356
30 to 59 Days Past Due [Member] | Land and land development - residential [Member]
Financing Receivable, Past Due [Line Items]
Past Due	0	0
30 to 59 Days Past Due [Member] | Commercial Business
Financing Receivable, Past Due [Line Items]
Past Due	159	3,247
30 to 59 Days Past Due [Member] | Small business scored
Financing Receivable, Past Due [Line Items]
Past Due	1,460	1,459
30 to 59 Days Past Due [Member] | Agricultural business, including secured by farmland
Financing Receivable, Past Due [Line Items]
Past Due	0	298
30 to 59 Days Past Due [Member] | One- to four-family residential [Member]
Financing Receivable, Past Due [Line Items]
Past Due	987	4,620
30 to 59 Days Past Due [Member] | Consumer secured by one- to four-family [Member]
Financing Receivable, Past Due [Line Items]
Past Due	464	459
30 to 59 Days Past Due [Member] | Consumer Loan [Member]
Financing Receivable, Past Due [Line Items]
Past Due	131	236
60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due	9,681	2,908
60 to 89 Days Past Due [Member] | Commerical real estate - owner-occupied [Member]
Financing Receivable, Past Due [Line Items]
Past Due	4,687	182
60 to 89 Days Past Due [Member] | Commercial real estate - investment properties
Financing Receivable, Past Due [Line Items]
Past Due	1,322	0
60 to 89 Days Past Due [Member] | Small balance CRE
Financing Receivable, Past Due [Line Items]
Past Due	1,978	45
60 to 89 Days Past Due [Member] | Multifamily Real Estate
Financing Receivable, Past Due [Line Items]
Past Due	0	0
60 to 89 Days Past Due [Member] | Commercial construction
Financing Receivable, Past Due [Line Items]
Past Due	0	0
60 to 89 Days Past Due [Member] | Multifamily construction
Financing Receivable, Past Due [Line Items]
Past Due	0	0
60 to 89 Days Past Due [Member] | One- to four- family construction
Financing Receivable, Past Due [Line Items]
Past Due	0	0
60 to 89 Days Past Due [Member] | Land and land development - residential [Member]
Financing Receivable, Past Due [Line Items]
Past Due	0	0
60 to 89 Days Past Due [Member] | Commercial Business
Financing Receivable, Past Due [Line Items]
Past Due	558	31
60 to 89 Days Past Due [Member] | Small business scored
Financing Receivable, Past Due [Line Items]
Past Due	948	891
60 to 89 Days Past Due [Member] | Agricultural business, including secured by farmland
Financing Receivable, Past Due [Line Items]
Past Due	0	37
60 to 89 Days Past Due [Member] | One- to four-family residential [Member]
Financing Receivable, Past Due [Line Items]
Past Due	21	955
60 to 89 Days Past Due [Member] | Consumer secured by one- to four-family [Member]
Financing Receivable, Past Due [Line Items]
Past Due	109	439
60 to 89 Days Past Due [Member] | Consumer Loan [Member]
Financing Receivable, Past Due [Line Items]
Past Due	58	328
90 Days or More Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due	13,672	22,548
90 Days or More Past Due [Member] | Commerical real estate - owner-occupied [Member]
Financing Receivable, Past Due [Line Items]
Past Due	587	1,447
90 Days or More Past Due [Member] | Commercial real estate - investment properties
Financing Receivable, Past Due [Line Items]
Past Due	3,709	7,981
90 Days or More Past Due [Member] | Small balance CRE
Financing Receivable, Past Due [Line Items]
Past Due	781	790
90 Days or More Past Due [Member] | Multifamily Real Estate
Financing Receivable, Past Due [Line Items]
Past Due	0	0
90 Days or More Past Due [Member] | Commercial construction
Financing Receivable, Past Due [Line Items]
Past Due	98	98
90 Days or More Past Due [Member] | Multifamily construction
Financing Receivable, Past Due [Line Items]
Past Due	0	0
90 Days or More Past Due [Member] | One- to four- family construction
Financing Receivable, Past Due [Line Items]
Past Due	0	331
90 Days or More Past Due [Member] | Land and land development - residential [Member]
Financing Receivable, Past Due [Line Items]
Past Due	14	317
90 Days or More Past Due [Member] | Commercial Business
Financing Receivable, Past Due [Line Items]
Past Due	228	2,088
90 Days or More Past Due [Member] | Small business scored
Financing Receivable, Past Due [Line Items]
Past Due	1,642	2,048
90 Days or More Past Due [Member] | Agricultural business, including secured by farmland
Financing Receivable, Past Due [Line Items]
Past Due	1,536	1,548
90 Days or More Past Due [Member] | One- to four-family residential [Member]
Financing Receivable, Past Due [Line Items]
Past Due	3,553	4,053
90 Days or More Past Due [Member] | Consumer secured by one- to four-family [Member]
Financing Receivable, Past Due [Line Items]
Past Due	1,524	1,847
90 Days or More Past Due [Member] | Consumer Loan [Member]
Financing Receivable, Past Due [Line Items]
Past Due	$ 0	$ 0

LOANS RECEIVABLE AND THE ALL_10

LOANS RECEIVABLE AND THE ALLOWANCE FOR CREDIT LOSSES (Allowance for Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance	$ 167,279	$ 100,559
Provision/(recapture) for credit losses	(8,035)	21,713
Recoveries	1,512	2,366
Charge-offs	(4,702)	(1,962)
Allowance for loan losses, Ending balance	156,054	130,488
Impact of Adopting ASC 326
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance		7,812
Commercial Real Estate
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance	57,791	30,591
Provision/(recapture) for credit losses	5,359	1,545
Recoveries	24	167
Charge-offs	(3,763)	(100)
Allowance for loan losses, Ending balance	59,411	29,339
Commercial Real Estate | Impact of Adopting ASC 326
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance		(2,864)
Multifamily Real Estate
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance	3,893	4,754
Provision/(recapture) for credit losses	474	321
Recoveries	0	0
Charge-offs	0	(66)
Allowance for loan losses, Ending balance	4,367	2,805
Multifamily Real Estate | Impact of Adopting ASC 326
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance		(2,204)
Construction and Land
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance	41,295	22,994
Provision/(recapture) for credit losses	(4,955)	8,708
Recoveries	100	0
Charge-offs	0	0
Allowance for loan losses, Ending balance	36,440	34,217
Construction and Land | Impact of Adopting ASC 326
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance		2,515
Commercial Business
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance	35,007	23,370
Provision/(recapture) for credit losses	(3,786)	6,447
Recoveries	979	205
Charge-offs	(789)	(1,384)
Allowance for loan losses, Ending balance	31,411	31,648
Commercial Business | Impact of Adopting ASC 326
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance		3,010
Agricultural Business
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance	4,914	4,120
Provision/(recapture) for credit losses	(297)	1,006
Recoveries	0	1,750
Charge-offs	0	0
Allowance for loan losses, Ending balance	4,617	4,513
Agricultural Business | Impact of Adopting ASC 326
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance		(351)
One- to Four-Family Residential
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance	9,913	4,136
Provision/(recapture) for credit losses	(2,038)	539
Recoveries	113	148
Charge-offs	0	(64)
Allowance for loan losses, Ending balance	7,988	11,884
One- to Four-Family Residential | Impact of Adopting ASC 326
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance		7,125
Consumer
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance	14,466	8,202
Provision/(recapture) for credit losses	(2,792)	5,159
Recoveries	296	96
Charge-offs	(150)	(348)
Allowance for loan losses, Ending balance	11,820	16,082
Consumer | Impact of Adopting ASC 326
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance		2,973
Unallocated
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance	0	2,392
Provision/(recapture) for credit losses	0	0
Recoveries	0	0
Charge-offs	0	0
Allowance for loan losses, Ending balance	$ 0	0
Unallocated | Impact of Adopting ASC 326
Financing Receivable, Allowance for Loan Losses [Roll Forward]
Allowance for loan losses, Beginning balance		$ (2,392)

GOODWILL, OTHER INTANGIBLE AS_3

GOODWILL, OTHER INTANGIBLE ASSETS AND MORTGAGE SERVICING RIGHTS (Finite-Lived Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Goodwill [Roll Forward]
Goodwill, beginning of period	$ 373,121	$ 373,121
Goodwill, end of period	373,121	373,121
Finite-lived Intangible Assets [Roll Forward]
Goodwill and other intangibles, net, beginning of period	394,547	402,279
Amortization	(1,711)	(7,732)
Goodwill and other intangibles, net, end of period	392,836	394,547
Core Deposit Intangibles [Member]
Finite-lived Intangible Assets [Roll Forward]
Finite lived assets Balance, beginning of period	21,426	29,158
Amortization	(1,711)	(7,732)
Finite lived assets Balance, end of period	$ 19,715	$ 21,426

GOODWILL, OTHER INTANGIBLE AS_4

GOODWILL, OTHER INTANGIBLE ASSETS AND MORTGAGE SERVICING RIGHTS (Estimated Annual Amortization Expense) (Details) - Core Deposit Intangibles [Member] - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Remainder of 2017	$ 4,860
2018	5,317
2019	3,814
2020	2,659
2021	1,575
Thereafter	1,490
Finite lived assets, net	$ 19,715	$ 21,426	$ 29,158

GOODWILL, OTHER INTANGIBLE AS_5

GOODWILL, OTHER INTANGIBLE ASSETS AND MORTGAGE SERVICING RIGHTS (Mortgage Servicing Rights) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Servicing Asset at Amortized Value, Balance [Roll Forward]
Servicing Asset at Amortized Cost, Additions, Acquisitions		$ 27	$ 63
Servicing Contracts [Member]
Morgage Servicing Rights at Amortized Value [Line Items]
Loans Serviced For Others		2,650,000		$ 2,640,000
Custodial Accounts		3,700		$ 3,800
Servicing Asset at Amortized Value, Balance [Roll Forward]
Balance, net of valuation allowance, beginning of the period		15,223	14,148
Additions—amounts capitalized		2,010	1,420
Amortization	[1]	(1,853)	(1,354)
Balance, net of valuation allowance, end of the period	[2]	15,407	$ 14,277
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 both March 31, 2021 and 2020.

REAL ESTATE OWNED, NET (REO Rol

REAL ESTATE OWNED, NET (REO Rollforward) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Real Estate Owned [Roll Forward]
Balance, beginning of the period	$ 816	$ 814
Additions from loan foreclosures	0	1,588
Proceeds from Sale of Other Real Estate	783	0
Gains (Losses) on Sales of Other Real Estate	(307)	0
Balance, end of the period	$ 340	$ 2,402

REAL ESTATE OWNED, NET REAL EST

REAL ESTATE OWNED, NET REAL ESTATE OWNED, NET (Textual) (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Real Estate Owned [Line Items]
Real Estate Owned	$ 340,000	$ 816,000	$ 2,402,000	$ 814,000
Mortgage Loans in Process of Foreclosure, Amount	609,000
One- to four-family residential [Member]
Real Estate Owned [Line Items]
Real Estate Owned	$ 0

DEPOSITS (Deposit Liabilities)

DEPOSITS (Deposit Liabilities) (Details) - USD ($)		Mar. 31, 2021	Dec. 31, 2020
Deposits:
Non-interest-bearing accounts		$ 5,994,693,000	$ 5,492,924,000
Interest-bearing checking		1,722,085,000	1,569,435,000
Regular savings accounts		2,597,731,000	2,398,482,000
Money market accounts		2,327,380,000	2,191,135,000
Total interest-bearing transaction and saving accounts		6,647,196,000	6,159,052,000
Certificates of deposit less than or equal to $250,000		711,424,000	718,256,000
Certificates of deposit greater than $250,000		195,554,000	197,064,000
Total certificates of deposit	[1]	906,978,000	915,320,000
Total deposits		13,548,867,000	12,567,296,000
Included in total deposits:
Public fund transaction and savings accounts		321,042,000	302,875,000
Public fund interest-bearing certificates		51,021,000	59,127,000
Total public deposits		372,063,000	362,002,000
Total brokered deposits		0	0
CD acquisition premium		$ 34,000	$ 58,000
[1]	Certificates of deposit include $34,000 and $58,000 of acquisition premiums at March 31, 2021 and December 31, 2020, respectively.

DEPOSITS DEPOSITS (Maturities a

DEPOSITS DEPOSITS (Maturities and Weighted Average Interest Rates of Certificates of Deposit) (Details) - USD ($) $ in Thousands		Mar. 31, 2021	Dec. 31, 2020
Maturities of Time Deposits [Abstract]
Maturing in one year or less		$ 705,004
Maturing after one year through two years		116,565
Maturing after two years through three years		61,618
Maturing after three years through four years		13,244
Maturing after four years through five years		8,684
Maturing after five years		1,863
Total certificates of deposit	[1]	$ 906,978	$ 915,320
Weighted Average Rate [Abstract]
Maturing in one year or less		0.71%
Maturing after one year through two years		1.29%
Maturing after two years through three years		0.81%
Maturing after three years through four years		1.89%
Maturing after four years through five years		0.72%
Maturing after five years		0.95%
Total certificates of deposit		0.81%
[1]	Certificates of deposit include $34,000 and $58,000 of acquisition premiums at March 31, 2021 and December 31, 2020, respectively.

DEPOSITS DEPOSITS (Textual) (De

DEPOSITS DEPOSITS (Textual) (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Banking and Thrift, Other Disclosures [Abstract]
Time Deposits, at or Above FDIC Insurance Limit	$ 200.8	$ 203.6

FAIR VALUE OF FINANCIAL INSTR_3

FAIR VALUE OF FINANCIAL INSTRUMENTS (Fair Value By Balance Sheet Location) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Assets:
Securities—trading	$ 25,039	$ 24,980
Securities—available-for-sale	2,989,760	2,322,593
Securities—held-to-maturity	459,595	448,681
Liabilities:
FHLB advances at fair value	100,000	150,000
Subordinated notes, net	98,290	98,201
Carrying Value
Assets:
Cash and cash equivalents	1,649,927	1,234,183
Securities—trading	25,039	24,980
Securities—available-for-sale	2,989,760	2,322,593
Loans receivable held for sale	135,263	243,795
Loans receivable	9,947,697	9,870,982
FHLB stock	14,001	16,358
Bank-owned life insurance	191,388	191,830
Mortgage servicing rights	15,407	15,223
Liabilities:
Demand, interest checking and money market accounts	10,044,158	9,253,494
Regular savings	2,597,731	2,398,482
Certificates of deposit	906,978	915,320
FHLB advances at fair value	100,000	150,000
Other borrowings	216,260	184,785
Subordinated notes, net		98,201
Junior subordinated debentures at fair value	117,248	116,974
Estimated Fair Value
Assets:
Cash and cash equivalents	1,649,927	1,234,183
Securities—trading	25,039	24,980
Securities—available-for-sale	2,989,760	2,322,593
Loans receivable held for sale	136,873	245,667
Loans receivable	9,967,242	9,810,293
FHLB stock	14,001	16,358
Bank-owned life insurance	191,388	191,830
Mortgage servicing rights	21,176	18,084
Liabilities:
Demand, interest checking and money market accounts	10,044,158	9,253,494
Regular savings	2,597,731	2,398,482
Certificates of deposit	910,069	919,920
FHLB advances at fair value	101,908	152,779
Other borrowings	216,260	184,785
Subordinated notes, net	98,290	98,201
Junior subordinated debentures at fair value	117,248	116,974
Interest rate swaps [Member] | Carrying Value
Assets:
Derivatives:	25,246	39,066
Liabilities:
Derivatives:	17,923	22,336
Interest rate swaps [Member] | Estimated Fair Value
Assets:
Derivatives:	25,246	39,066
Liabilities:
Derivatives:	17,923	22,336
Interest Rate Forward Sales Commitments [Member] | Carrying Value
Assets:
Derivatives:	6,186	5,641
Liabilities:
Derivatives:	85	1,755
Interest Rate Forward Sales Commitments [Member] | Estimated Fair Value
Assets:
Derivatives:	6,186	5,641
Liabilities:
Derivatives:	85	1,755
Fair Value, Inputs, Level 2 [Member] | Carrying Value
Assets:
Securities—held-to-maturity	418,871	410,038
Fair Value, Inputs, Level 2 [Member] | Estimated Fair Value
Assets:
Securities—held-to-maturity	436,484	436,882
Fair Value, Inputs, Level 3 [Member] | Carrying Value
Assets:
Securities—held-to-maturity	23,084	11,769
Fair Value, Inputs, Level 3 [Member] | Estimated Fair Value
Assets:
Securities—held-to-maturity	$ 23,111	$ 11,799

FAIR VALUE OF FINANCIAL INSTR_4

FAIR VALUE OF FINANCIAL INSTRUMENTS (Assets and Liabilities Measured on a Recurring Basis) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—trading	$ 25,039	$ 24,980
Securities—available-for-sale	2,989,760	2,322,593
Advances from FHLB	100,000	150,000
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	2,989,760	2,322,593
Total assets	3,106,224	2,525,834
Junior subordinated debentures net of unamortized deferred issuance costs at fair value	117,248	116,974
Total liabilities	135,256	141,065
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	6,186	39,066
Derivative liabilities	85	22,336
Recurring [Member] | Interest rate swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	25,246	5,641
Derivative liabilities	17,923	1,755
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	62,846	141,735
Recurring [Member] | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	300,735	303,518
Recurring [Member] | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	245,428	221,769
Recurring [Member] | TPS and TRUP CDOs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—trading	25,039	24,980
Recurring [Member] | Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	2,377,003	1,646,152
Recurring [Member] | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	3,748	9,419
Recurring [Member] | Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	59,993	133,554
Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
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
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	0	0
Recurring [Member] | Level 1 [Member] | Corporate bonds
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
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	0	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] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	2,989,760	2,322,593
Total assets	3,078,248	2,495,633
Junior subordinated debentures net of unamortized deferred issuance costs at fair value	0	0
Total liabilities	18,008	24,091
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	3,249	39,066
Derivative liabilities	85	22,336
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	25,246	420
Derivative liabilities	17,923	1,755
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	62,846	141,735
Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	300,735	303,518
Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	245,428	221,769
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	2,377,003	1,646,152
Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	3,748	9,419
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	59,993	133,554
Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities—available-for-sale	0	0
Total assets	27,976	30,201
Junior subordinated debentures net of unamortized deferred issuance costs at fair value	117,248	116,974
Total liabilities	117,248	116,974
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	2,937	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	5,221	$ 2,517	$ 791
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
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] | Corporate bonds
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	25,039	24,980
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
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] | Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	$ 0	$ 0

FAIR VALUE OF FINANCIAL INSTR_5

FAIR VALUE OF FINANCIAL INSTRUMENTS (Valuation Technique) (Details) - Fair Value, Inputs, Level 3 [Member]	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
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
Corporate Bonds (TPS securities) [Member] | Weighted Average [Member] | Discounted cash flows [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Fair Value Input, Discount Rate	4.19%	4.24%
Impaired Loans [Member] | Minimum [Member] | discount to appraised value [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
fair value inputs, discount to appraised value	8.50%	0.00%
Impaired Loans [Member] | Maximum [Member] | discount to appraised value [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
fair value inputs, discount to appraised value	20.00%	20.00%
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	68.35%	51.86%
Interest Rate Lock Commitments [Member] | Weighted Average [Member] | Valuation, Pricing Model [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Fair Value Input, Pull-Through Rate	89.15%
Servicing Contracts [Member] | Weighted Average [Member] | Discounted cash flows [Member]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Fair Value Input, Pull-Through Rate		86.35%

FAIR VALUE OF FINANCIAL INSTR_6

FAIR VALUE OF FINANCIAL INSTRUMENTS (Unobservable Inputs Reconciliation) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Interest rate swaps [Member] | Recurring [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Derivative assets	$ 25,246		$ 5,641
Interest rate swaps [Member] | Fair Value, Inputs, Level 3 [Member] | Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Assets gains (losses), including OTTI	(2,284)	$ 1,726
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Derivative assets	0	2,517	$ 5,221	$ 791
Junior Subordinated Debt [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	116,974	119,304
Liabilities (gains) losses	274	(19,509)
Ending balance	117,248	99,795
TPS Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	24,980	25,636
Assets gains (losses), including OTTI	59	(4,596)
Ending balance	$ 25,039	$ 21,040

FAIR VALUE OF FINANCIAL INSTR_7

FAIR VALUE OF FINANCIAL INSTRUMENTS (Assets Measured on Nonrecurring Basis) (Details) - Nonrecurring [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ (627)		$ (3,482)
REO	340		816
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	(627)		(3,482)
REO	340		$ 816
Gains (losses) resulting from nonrecurring fair value adjustments	302	$ 0
Impaired Loans [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	302	0
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	$ 0	$ 0

INCOME TAXES AND DEFERRED TAX_3

INCOME TAXES AND DEFERRED TAXES INCOME TAXES AND DEFERRED TAXES (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Tax credit investments	$ 32,613		$ 33,528
Unfunded commitments—tax credit investments	15,383		$ 18,306
Tax credits and other tax benefits recognized	1,068	$ 1,007
Tax credit amortization expense included in provision for income taxes	$ 915	$ 809

CALCULATION OF WEIGHTED AVERA_3

CALCULATION OF WEIGHTED AVERAGE SHARES OUTSTANDING FOR EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020
Earnings Per Share [Abstract]
Net income	$ 46,855	$ 38,957	$ 36,548	$ 23,541	$ 16,882
Basic weighted average shares outstanding	34,973,383				35,463,541
Dilutive effect of unvested restricted stock	330,100				176,922
Diluted weighted shares outstanding	35,303,483				35,640,463
Earnings per common share
Basic	$ 1.34				$ 0.48
Diluted	$ 1.33				$ 0.47

STOCK-BASED COMPENSATION PLANS

STOCK-BASED COMPENSATION PLANS (Details) - USD ($) $ in Millions	3 Months Ended		29 Months Ended	62 Months Ended	77 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Sep. 30, 2020	Jun. 30, 2019	Sep. 30, 2020	Apr. 24, 2018	Apr. 22, 2014
Restricted Stock Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Expense	$ 2.2	$ 1.9
Compensation Cost Not yet Recognized	$ 18.5
Compensation Cost Not yet Recognized, Period for Recognition	36 months
2014 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares Authorized							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					300,015
Restricted stock grants, shares vested					3,884
2014 Omnibus Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock granted					403,440
Restricted stock grants, shares vested				148,093
2018 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares Authorized						900,000
2018 Omnibus Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock granted			503,955

COMMITMENTS AND CONTINGENCIES_2

COMMITMENTS AND CONTINGENCIES (Commitments Without Recorded Liability) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Reserve for Unfunded Loan Commitments	$ 12,100,000		$ 13,300,000
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	$ 3,357,135,000		3,207,072,000
Financial Standby Letter of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	21,493,000		18,415,000
Loan Origination Commitments [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	134,759,000		101,426,000
Risk Participation Agreement [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	40,789,000		40,949,000
Loans Held for Sale Origination Commitments [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	165,236,000		169,653,000
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	82,963,000		79,414,000
Counterparty default losses on forward contracts	0	$ 0
Commitments to Sell Mortgage Backed Securities [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	199,500,000		204,000,000
Amount funded out of a total commitment to invest [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Other Commitment	4,200,000		2,800,000
Amount unfunded out of a total commitment to invest [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Other Commitment	$ 5,800,000		$ 7,200,000

DERIVATIVES AND HEDGING (Deriva

DERIVATIVES AND HEDGING (Derivatives Designated as Hedging, by Balance Sheet Location) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	$ 25,246	$ 39,066
Liability Derivatives, Fair Value	23,877	39,204
Interest rate swaps [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	25,246	39,066
Liability Derivatives, Fair Value	23,877	39,204
Interest rate swaps [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional/Contract Amount	248	338
Liability Derivatives, Notional/Contract Amount	248	338
Interest rate swaps [Member] | Designated as Hedging Instrument [Member] | Loans Receivable [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	5	9
Interest rate swaps [Member] | Designated as Hedging Instrument [Member] | Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	$ 5	$ 9

DERIVATIVES AND HEDGING (Deri_2

DERIVATIVES AND HEDGING (Derivatives Not Designated as Hedging, by Balance Sheet Location) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	$ 25,246	$ 39,066
Liability Derivatives, Fair Value	23,877	39,204
Interest rate swaps [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	25,246	39,066
Liability Derivatives, Fair Value	23,877	39,204
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional/Contract Amount	880,249	671,564
Liability Derivatives, Notional/Contract Amount	520,385	728,271
Not Designated as Hedging Instrument [Member] | Other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	31,427	44,698
Not Designated as Hedging Instrument [Member] | Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	18,003	24,082
Not Designated as Hedging Instrument [Member] | Interest rate swaps [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional/Contract Amount	458,118	451,760
Liability Derivatives, Notional/Contract Amount	458,118	451,760
Not Designated as Hedging Instrument [Member] | Interest rate swaps [Member] | Other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	25,241	39,057
Not Designated as Hedging Instrument [Member] | Interest rate swaps [Member] | Loans Receivable [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	246	231
Not Designated as Hedging Instrument [Member] | Interest rate swaps [Member] | Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	17,918	22,327
Not Designated as Hedging Instrument [Member] | Mortgage loan commitments [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional/Contract Amount	139,668	140,390
Liability Derivatives, Notional/Contract Amount	62,267	72,511
Not Designated as Hedging Instrument [Member] | Mortgage loan commitments [Member] | Other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	2,937	5,221
Not Designated as Hedging Instrument [Member] | Mortgage loan commitments [Member] | Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	85	199
Not Designated as Hedging Instrument [Member] | Forward Contracts [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional/Contract Amount	282,463	79,414
Liability Derivatives, Notional/Contract Amount	0	204,000
Not Designated as Hedging Instrument [Member] | Forward Contracts [Member] | Other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	3,249	420
Not Designated as Hedging Instrument [Member] | Forward Contracts [Member] | Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	$ 0	$ 1,556

DERIVATIVES AND HEDGING (Gain (

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, 2021	Mar. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income, net	$ 727	$ (1,342)
Mortgage loan commitments [Member] | Mortgage banking operations [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income, net	(2,284)	1,726
Forward sales contracts [Member] | Mortgage banking operations [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income, net	$ 3,011	$ (3,068)

DERIVATIVES AND HEDGING (Narrat

DERIVATIVES AND HEDGING (Narrative) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative net liability position	$ 24,100	$ 48,600
Collateral posted	55,700	47,100
Offsetting Assets and Liabilities [Line Items]
Derivative Liabilities, Amounts offset in the Statement of Financial Condition	(5,954)	(16,868)
Interest rate swaps [Member]
Offsetting Assets and Liabilities [Line Items]
Derivative Liabilities, Amounts offset in the Statement of Financial Condition	$ (5,954)	$ (16,868)

DERIVATIVES AND HEDGING (Deri_3

DERIVATIVES AND HEDGING (Derivative Offsetting) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Offsetting Derivative Assets [Abstract]
Derivative Assets, Gross Amounts Recognized	$ 25,246	$ 39,066
Derivative Assets, Amounts offsett in the Statement of Financial Condition	0	0
Derivative Assets, Net Amounts in the Statement of Financial Condition	25,246	39,066
Derivative Assets, Netting Adjustment Per Applicable Master Netting Agreements	0	0
Derivative Assets, Fair Value of Financial Collateral in the Statement of Financial Condiation	0	0
Derivative Assets, Net Amount	25,246	39,066
Offsetting Derivative Liabilities [Abstract]
Derivative Liabilities, Gross Amounts Recognized	23,877	39,204
Derivative Liabilities, Amounts offset in the Statement of Financial Condition	(5,954)	(16,868)
Derivative Liabilities, Net Amounts of the Statement of Financial Condition	17,923	22,336
Derivative Liabilities, Net Adjustment Per Applicable Master Netting Agreements	0	0
Derivative Liabilities, Fair Value of Financial Collateral in the Statement of Financial Condition	(12,881)	(22,220)
Derivative Liabilities, Net Amount	5,042	116
Interest rate swaps [Member]
Offsetting Derivative Assets [Abstract]
Derivative Assets, Gross Amounts Recognized	25,246	39,066
Derivative Assets, Amounts offsett in the Statement of Financial Condition	0	0
Derivative Assets, Net Amounts in the Statement of Financial Condition	25,246	39,066
Derivative Assets, Netting Adjustment Per Applicable Master Netting Agreements	0	0
Derivative Assets, Fair Value of Financial Collateral in the Statement of Financial Condiation	0	0
Derivative Assets, Net Amount	25,246	39,066
Offsetting Derivative Liabilities [Abstract]
Derivative Liabilities, Gross Amounts Recognized	23,877	39,204
Derivative Liabilities, Amounts offset in the Statement of Financial Condition	(5,954)	(16,868)
Derivative Liabilities, Net Amounts of the Statement of Financial Condition	17,923	22,336
Derivative Liabilities, Net Adjustment Per Applicable Master Netting Agreements	0	0
Derivative Liabilities, Fair Value of Financial Collateral in the Statement of Financial Condition	(12,881)	(22,220)
Derivative Liabilities, Net Amount	$ 5,042	$ 116

REVENUE FROM CONTRACTS WITH C_3

REVENUE FROM CONTRACTS WITH CUSTOMERS (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Debit and credit card interchange fees	$ 5,290	$ 4,884
Debit and credit card expense	2,520	1,932
Merchant services expense	2,532	2,436
Other service charges	1,446	1,453
Total deposit fees and other service charges	8,939	9,803
Deposit service charges
Disaggregation of Revenue [Line Items]
Deposit service charges	4,113	4,832
Merchant services income
Disaggregation of Revenue [Line Items]
Deposit service charges	$ 3,142	$ 3,002