Banc of California (BANC) 10-Q 8 Nov 21 2021 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Sep. 30, 2021	Nov. 01, 2021
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	001-35522
Entity Registrant Name	BANC OF CALIFORNIA, INC.
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	04-3639825
Entity Address, Address Line One	3 MacArthur Place
Entity Address, City or Town	Santa Ana
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92707
City Area Code	855
Local Phone Number	361-2262
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001169770
Current Fiscal Year End Date	--12-31
Common Stock
Document Information [Line Items]
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	BANC
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		62,180,037
Series E 7.00% non-cumulative perpetual
Document Information [Line Items]
Title of 12(b) Security	Depositary Shares each representing a 1/40th interest in a share of 7.00% Non-Cumulative Perpetual Preferred Stock, Series E
Trading Symbol	BANC PRE
Security Exchange Name	NYSE
Class B Non-Voting Non-Convertible Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		477,321

CONSOLIDATED STATEMENTS OF FINA

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
ASSETS
Cash and due from banks	$ 31,594	$ 38,330
Interest-earning deposits in financial institutions	154,246	182,489
Total cash and cash equivalents	185,840	220,819
Securities available-for-sale, at fair value	1,303,368	1,231,431
Loans held-for-sale, carried at fair value	3,422	1,413
Loans receivable	6,228,575	5,898,405
Allowance for loan losses	(73,524)	(81,030)
Loans receivable, net	6,155,051	5,817,375
Federal Home Loan Bank and other bank stock, at cost	44,604	44,506
Premises and equipment, net	114,011	121,520
Bank owned life insurance	113,884	111,807
Operating lease right-of-use assets	29,054	19,633
Investments in alternative energy partnerships, net	25,196	27,977
Deferred income taxes, net	40,659	45,957
Goodwill	37,144	37,144
Other intangible assets, net	1,787	2,633
Other assets	224,721	195,119
Total assets	8,278,741	7,877,334
LIABILITIES AND STOCKHOLDERS’ EQUITY
Noninterest-bearing deposits	2,107,709	1,559,248
Interest-bearing deposits	4,435,516	4,526,552
Total deposits	6,543,225	6,085,800
Federal Home Loan Bank advances, net	405,738	539,795
Other borrowings	100,000	0
Long-term debt, net	256,706	256,315
Reserve for loss on repurchased loans	5,023	5,515
Operating lease liabilities	30,390	20,647
Accrued expenses and other liabilities	92,856	72,055
Total liabilities	7,433,938	6,980,127
Commitments and contingent liabilities
Preferred stock	94,956	184,878
Additional paid-in capital	631,512	634,704
Retained earnings	147,682	110,179
Treasury stock, at cost (2,410,964 and 2,410,964 shares at September 30, 2021 and December 31, 2020)	(40,827)	(40,827)
Accumulated other comprehensive income, net	10,948	7,746
Total stockholders’ equity	844,803	897,207
Total liabilities and stockholders’ equity	8,278,741	7,877,334
Voting
LIABILITIES AND STOCKHOLDERS’ EQUITY
Common stock	527	522
Class B Common Stock
LIABILITIES AND STOCKHOLDERS’ EQUITY
Common stock	$ 5	$ 5

CONSOLIDATED STATEMENTS OF FI_2

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) - $ / shares	Sep. 30, 2021	Dec. 31, 2020
Treasury stock (in shares)	2,410,964	2,410,964
Voting
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	446,863,844	446,863,844
Common stock, shares issued (in shares)	52,732,060	52,178,453
Common stock, shares outstanding (in shares)	50,321,096	49,767,489
Class B Common Stock
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	3,136,156	3,136,156
Common stock, shares issued (in shares)	477,321	477,321
Common stock, shares outstanding (in shares)	477,321	477,321

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Interest and dividend income
Loans, including fees	$ 63,837	$ 61,900	$ 62,019	$ 187,082	$ 191,195
Securities	7,167	6,986	6,766	20,654	22,402
Other interest-earning assets	787	791	881	2,350	3,480
Total interest and dividend income	71,791	69,677	69,666	210,086	217,077
Interest expense
Deposits	2,412	3,543	7,564	10,241	32,380
Federal Home Loan Bank advances	2,990	2,944	3,860	9,046	14,561
Securities sold under repurchase agreements	0	0	2	0	4
Long-term debt and other interest-bearing liabilities	3,413	3,343	2,385	10,060	7,101
Total interest expense	8,815	9,830	13,811	29,347	54,046
Net interest income	62,976	59,847	55,855	180,739	163,031
(Reversal of) provision for credit losses	(1,147)	(2,154)	1,141	(4,408)	28,728
Net interest income after (reversal of) provision for credit losses	64,123	62,001	54,714	185,147	134,303
Noninterest income
Customer service fees	1,900	1,990	1,498	5,648	3,818
Loan servicing income	170	38	186	476	356
Income from bank owned life insurance	715	690	629	2,077	1,798
Net gain on sale of securities available-for-sale	0	0	0	0	2,011
Fair value adjustment for loans held-for-sale	160	20	24	180	(1,537)
Net gain on sale of loans	0	0	272	0	245
Other income	2,574	1,432	1,345	5,689	4,852
Total noninterest income	5,519	4,170	3,954	14,070	11,543
Noninterest expense
Salaries and employee benefits	24,786	25,042	23,277	75,547	70,973
Naming rights termination	0	0	0	0	26,769
Occupancy and equipment	7,124	7,277	7,457	21,597	21,790
Professional fees	892	1,749	5,147	6,663	15,707
Data processing	1,646	1,621	1,657	4,922	4,966
Advertising and promotion	122	78	219	318	3,132
Regulatory assessments	812	769	784	2,355	1,993
(Gain) loss on investments in alternative energy partnerships	(1,785)	(829)	(1,430)	1,016	308
Reversal of provision for loan repurchases	(42)	(99)	(91)	(273)	(725)
Amortization of intangible assets	282	282	353	846	1,212
Merger-related costs	1,000	700	0	2,400	0
All other expense	2,974	3,969	3,021	9,714	13,958
Total noninterest expense	37,811	40,559	40,394	125,105	160,083
Income (loss) from operations before income taxes	31,831	25,612	18,274	74,112	(14,237)
Income tax expense (benefit)	8,661	6,562	2,361	17,517	(5,108)
Net income (loss)	23,170	19,050	15,913	56,595	(9,129)
Preferred stock dividends	1,727	1,727	3,447	6,595	10,422
Income allocated to participating securities	0	0	281	160	0
Participating securities dividends	0	0	94	0	282
Impact of preferred stock redemption	0	0	7	3,347	(568)
Net income (loss) available to common stockholders	21,443	17,323	12,084	46,493	(19,265)
Net income (loss) available to common stockholders	21,443	$ 17,323	12,084	46,493	(19,265)
Voting
Noninterest expense
Preferred stock dividends	1,711		3,414	6,533	10,323
Income allocated to participating securities	0		278	$ 158	0
Participating securities dividends			93		$ 279
Impact of preferred stock redemption	$ 0		$ 7
Earnings (loss) per common share:
Basic (in dollars per share)	$ 0.42	$ 0.34	$ 0.24	$ 0.92	$ (0.38)
Diluted (loss) earnings per common share
Diluted (in dollars per share)	$ 0.42	0.34	$ 0.24	$ 0.91	$ (0.38)
Class B Common Stock
Noninterest expense
Preferred stock dividends	$ 16		$ 33	$ 62	$ 99
Income allocated to participating securities	0		3	$ 2	0
Participating securities dividends			1		$ 3
Impact of preferred stock redemption	$ 0		$ 0
Earnings (loss) per common share:
Basic (in dollars per share)	$ 0.42	0.34	$ 0.24	$ 0.92	$ (0.38)
Diluted (loss) earnings per common share
Diluted (in dollars per share)	$ 0.42	$ 0.34	$ 0.24	$ 0.92	$ (0.38)

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 23,170	$ 19,050	$ 15,913	$ 56,595	$ (9,129)
Unrealized (loss) gain on available-for-sale securities:
Unrealized (loss) gain arising during the period	(3,792)	9,555	16,831	3,202	14,585
Reclassification adjustment for gain included in net (loss) income	0	0	0	0	(1,419)
Total change in unrealized (loss) gain on available-for-sale securities	(3,792)	9,555	16,831	3,202	13,166
Total other comprehensive (loss) income	(3,792)	9,555	16,831	3,202	13,166
Comprehensive income	$ 19,378	$ 28,605	$ 32,744	$ 59,797	$ 4,037

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Common StockVoting	Common StockClass B Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Adoption of ASU No. 2016-13	Adoption of ASU No. 2016-13Retained Earnings
Beginning Balance at Dec. 31, 2019	$ 907,245	$ 189,825		$ 520	$ 5	$ 629,848	$ 127,733	$ (28,786)	$ (11,900)	$ (4,503)	$ (4,503)
Comprehensive income:
Net income (loss)	(9,129)						(9,129)
Other comprehensive income, net	13,166								13,166
Issuance of common stock	0			2		(2)
Redemption of preferred stock	(4,379)	(4,947)					568
Repurchase of common stock	(12,041)							(12,041)
Share-based compensation expense	4,392					4,392
Restricted stock surrendered due to employee tax liability	(829)					(829)
Shares purchased under the Dividend Reinvestment Plan	(74)						(74)
Stock appreciation right dividend equivalents	(282)						(282)
Dividends declared	(8,890)						(8,890)
Preferred stock dividends	(10,422)						(10,422)
Ending Balance at Sep. 30, 2020	874,254	184,878		522	5	633,409	95,001	(40,827)	1,266
Beginning Balance at Jun. 30, 2020	846,959	185,037		522	5	632,117	85,670	(40,827)	(15,565)
Comprehensive income:
Net income (loss)	15,913						15,913
Other comprehensive income, net	16,831								16,831
Redemption of preferred stock	(166)	(159)					(7)
Share-based compensation expense	1,346					1,346
Restricted stock surrendered due to employee tax liability	(54)					(54)
Shares purchased under the Dividend Reinvestment Plan	(27)						(27)
Stock appreciation right dividend equivalents	(94)						(94)
Dividends declared	(3,007)						(3,007)
Preferred stock dividends	(3,447)						(3,447)
Ending Balance at Sep. 30, 2020	874,254	184,878		522	5	633,409	95,001	(40,827)	1,266
Beginning Balance at Dec. 31, 2020	897,207	184,878		522	5	634,704	110,179	(40,827)	7,746
Comprehensive income:
Net income (loss)	56,595						56,595
Other comprehensive income, net	3,202								3,202
Issuance of common stock	0			2		(2)
Redemption of preferred stock	(93,269)	(89,922)					(3,347)
Exercise of stock options	300					300
Exercise of SARs	(5,372)		$ 3			(5,375)
Share-based compensation expense	3,988					3,988
Restricted stock surrendered due to employee tax liability	(2,133)					(2,133)
Shares purchased under the Dividend Reinvestment Plan	(59)					30	(89)
Dividends declared	(9,061)						(9,061)
Preferred stock dividends	(6,595)						(6,595)
Ending Balance at Sep. 30, 2021	844,803	94,956		527	5	631,512	147,682	(40,827)	10,948
Beginning Balance at Jun. 30, 2021	829,362	94,956		527	5	630,654	129,307	(40,827)	14,740
Comprehensive income:
Net income (loss)	23,170						23,170
Other comprehensive income, net	(3,792)								(3,792)
Share-based compensation expense	1,106					1,106
Restricted stock surrendered due to employee tax liability	(278)					(278)
Shares purchased under the Dividend Reinvestment Plan	0					30	(30)
Dividends declared	(3,038)						(3,038)
Preferred stock dividends	(1,727)						(1,727)
Ending Balance at Sep. 30, 2021	$ 844,803	$ 94,956		$ 527	$ 5	$ 631,512	$ 147,682	$ (40,827)	$ 10,948

CONSOLIDATED STATEMENTS OF ST_2

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Stockholders' Equity [Abstract]
Shares repurchased (in shares)				827,584
Dividends declared, per common share (in dollars per share)	$ 0.06	$ 0.06	$ 0.18	$ 0.18

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income (loss)	$ 56,595	$ (9,129)
Adjustments to reconcile net income (loss) to net cash provided by operating activities
(Reversal of) provision for credit losses	(4,408)	28,728
Reversal of provision for loan repurchases	(273)	(725)
Depreciation on premises and equipment	11,414	12,378
Amortization of intangible assets	846	1,212
Amortization of debt issuance costs	1,283	537
Net amortization of premium on securities	1,184	676
Net accretion of deferred loan costs and fees	(3,430)	(2,007)
Net amortization (accretion) of premiums (discounts) on purchased loans	2,367	(361)
Write-off of other assets related to naming rights termination, net	0	6,669
Debt extinguishment fee	0	2,515
Deferred income tax benefit	(3,476)	(2,553)
Bank owned life insurance income	(2,077)	(1,798)
Share-based compensation expense	3,988	4,392
(Income) loss on interest rate swaps	(240)	285
Loss on investments in alternative energy partnerships and affordable housing investments	4,130	4,327
Impairment on capitalized software projects	0	157
Fair value adjustment for loans held-for-sale	(180)	1,537
Net gain on sale of loans	0	(245)
Net gain on sale of securities available-for-sale	0	(2,011)
Gain on sale-leaseback of branch	(841)	0
Loss on disposal of property and equipment	4	106
Repurchase of mortgage loans	(1,852)	0
Proceeds from sales of and principal collected on loans held-for-sale	23	18,853
Change in accrued interest receivable and other assets	5,063	(673)
Change in accrued interest payable and other liabilities	5,579	(24,273)
Net cash provided by operating activities	75,699	38,597
Cash flows from investing activities:
Proceeds from sales of securities available-for-sale	0	22,727
Proceeds from maturities and calls of securities available-for-sale	120,230	30,000
Proceeds from principal repayments of securities available-for-sale	22,499	5,075
Purchases of securities available-for-sale	(226,813)	(371,092)
Loan originations and principal collections, net	281,951	427,308
Purchases of loans	(615,359)	(154,864)
Redemption of Federal Home Loan Bank stock	436	23,972
Purchases of Federal Home Loan Bank and other bank stock	(534)	(9,361)
Proceeds from sale of other real estate owned	3,618	1,078
Purchases of premises and equipment	(2,256)	(4,547)
Proceeds from sale-leaseback of branch	3,913	0
Payments of capital lease obligations	(103)	(398)
Funding of equity investment	(6,320)	(17,346)
Decrease (increase) in investments in alternative energy partnerships	1,765	(2,019)
Net cash used in investing activities	(416,973)	(49,467)
Cash flows from financing activities:
Net increase in deposits	457,425	605,099
Net decrease in short-term Federal Home Loan Bank advances	(135,000)	(505,000)
Repayment of long-term Federal Home Loan Bank advances	0	(235,000)
Proceeds from long-term Federal Home Loan Bank advances	0	111,000
Debt extinguishment and financing fees paid	0	(9,368)
Net increase in other borrowings	100,000	0
Redemption of preferred stock	(93,269)	(4,379)
Purchase of treasury stock	0	(12,041)
Proceeds from exercise of stock options	300	0
Purchase of stock surrendered to pay tax liability	(7,505)	(829)
Dividend equivalents paid on participating securities	0	(282)
Dividends paid on preferred stock	(6,595)	(10,422)
Dividends paid on common stock	(9,061)	(8,890)
Net cash provided by (used in) financing activities	306,295	(70,112)
Net change in cash and cash equivalents	(34,979)	(80,982)
Cash and cash equivalents at beginning of period	220,819	373,472
Cash and cash equivalents at end of period	185,840	292,490
Supplemental cash flow information
Interest paid on deposits and borrowed funds	25,133	52,577
Income taxes paid	11,975	758
Supplemental disclosure of non-cash activities
Transfer from loans to other real estate owned, net	3,253	1,116
Equipment acquired under capital leases	256	30
Operating lease right-of-use assets recognized	14,172	(960)
Operating lease liabilities recognized	14,172	960
Impact of adoption of ASU 2016-13 on retained earnings	844,803	874,254
Receivable on unsettled securities sales	40,500	0
Due on unsettled securities purchases	$ 25,000	$ 0

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Nature of Operations: Banc of California, Inc. (collectively, with its consolidated subsidiaries, the Company, we, us, and our) is a financial holding company under the Bank Holding Company Act of 1956, as amended, headquartered in Santa Ana, California and incorporated under the laws of Maryland. Banc of California, Inc. is subject to regulation by the Board of Governors of the Federal Reserve System (“FRB”) and its wholly-owned subsidiary, Banc of California, National Association (the “Bank”), operates under a national bank charter issued by the Office of the Comptroller of the Currency (“OCC”), the Bank's primary regulator. The Bank is a member of the Federal Home Loan Bank (“FHLB”) system, and maintains insurance on deposit accounts with the Federal Deposit Insurance Corporation (“FDIC”). The Bank offers a variety of financial services to meet the banking and financial needs of the communities it serves, with operations conducted through 33 full-service branches located throughout Southern California as of September 30, 2021. Merger with Pacific Mercantile Bancorp: On October 18, 2021, the Company completed the acquisition of Pacific Mercantile Bancorp, pursuant to which Pacific Mercantile Bancorp merged with and into the Company, with the Company as the surviving corporation. Refer to Note 18, Subsequent Events . Basis of Presentation: The accompanying unaudited interim consolidated financial statements have been prepared pursuant to Article 10 of SEC Regulation S-X and other SEC rules and regulations for reporting on the Quarterly Report on Form 10-Q. Accordingly, certain disclosures required by U.S. generally accepted accounting principles (“GAAP”) are not included herein. These interim statements should be read in conjunction with the consolidated financial statements and notes included in the Annual Report on Form 10-K for the year ended December 31, 2020 filed by us with the SEC. The December 31, 2020 consolidated statements of financial condition presented herein have been derived from the audited financial statements included in the Annual Report on Form 10-K for the year ended December 31, 2020 filed with the SEC. Certain prior period amounts have been reclassified to conform to current period presentation, including i) reclassification of income taxes receivable to other assets in the consolidated statement of financial condition, and ii) reclassification of outside services expense from "outside services fees" to "all other expense" in the consolidated statements of operations. In the opinion of management of the Company, the accompanying unaudited interim consolidated financial statements reflect all of the adjustments (consisting of normal recurring adjustments) necessary for a fair presentation of the consolidated financial condition and consolidated results of operations as of the dates and for the periods presented. The results of operations for the three and nine months ended September 30, 2021 are not necessarily indicative of the results that may be expected for the year ending December 31, 2021. Principles of Consolidation: The accompanying unaudited consolidated financial statements include the accounts of the Company and its consolidated subsidiaries as of September 30, 2021 and December 31, 2020 and for the three and nine months ended September 30, 2021 and 2020. Significant intercompany accounts and transactions have been eliminated in consolidation. Unless the context requires otherwise, all references to the Company include its then wholly-owned subsidiaries. Adopted Accounting Pronouncements: On January 1, 2021, we adopted Accounting Standards Update (“ASU”) 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (“ASU 2019-12”) which simplifies the accounting for income taxes by removing certain exceptions for investments, intra-period allocations, and interim calculations, and adding guidance to reduce the complexity of applying Topic 740. The adoption of these amendments did not have a material effect on our consolidated financial statements. Significant Accounting Policies: The accounting and reporting policies of the Company are based upon GAAP and conform to predominant practices within the banking industry. We have not made any significant changes in our critical accounting policies from those disclosed in our Annual Report on Form 10-K for the year ended December 31, 2020 filed with the SEC. Use of Estimates in the Preparation of Financial Statements: The preparation of financial statements, in conformity with GAAP, requires management to make estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the consolidated financial statements and disclosures provided, and actual results could differ. The allowance for credit losses (“ACL”) (which includes the allowance for loan losses (“ALL”) and the reserve for unfunded loan commitments), provision for credit losses, loan repurchase reserve, realization of deferred tax assets, valuation of goodwill and other intangible assets, valuation of investments in alternative energy partnerships, and the fair value measurement of financial instruments are particularly subject to change and such change could have a material effect on the consolidated financial statements. Recent Accounting Guidance: In August 2021, the FASB issued ASU 2021-06, Presentation of Financial Statements (Topic 205), Financial Services—Depository and Lending (Topic 942), and Financial Services— Investment Companies (Topic 946), Amendments to SEC Paragraphs Pursuant to SEC Final Rule Releases No. 33-10786, Amendments to Financial Disclosures about Acquired and Disposed Businesses, and No. 33-10835, Update of Statistical Disclosures for Bank and Savings and Loan Registrants("ASU 2021-06") . This ASU incorporates recent SEC rule changes into the FASB Codification, including SEC Final Rule Releases No. 33-10786, Amendments to Financial Disclosures about Acquired and Disposed Businesses , and No. 33-10835, Update of Statistical Disclosures for Bank and Savings and Loan Registrants Disclosures for Bank and Savings and Loan Registrants . The amendments in this update are effective upon addition to the FASB Codification and are not expected to have a material impact on the consolidated financial statements. Beginning in June 2023, the London Interbank Offered Rate (“LIBOR”) will be discontinued. To assist entities with the transition away from LIBOR, the Financial Accounting Standards Board (“FASB”) has issued accounting guidance to clarify GAAP and provide practical expedients for entities to utilize during the time of transition. We are in the process of evaluating the potential impact the discontinuation of LIBOR will have on our consolidated financial statements. The optional expedients and exceptions provided through this relief are set forth below and were effective immediately; however, certain provisions from this relief are not yet determined due to the fact that LIBOR has not yet been discontinued. In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848) , ("ASU 2020-04") which provided optional guidance, for a limited period of time, to ease the potential burden in accounting for (or recognizing the benefits of) reference rate reform on financial reporting. The amendments in ASU 2020-04 were elective and applied to all entities, subject to meeting certain criteria, that have contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. ASU 2020-04 provided optional expedients and exceptions for applying GAAP to contract modifications and hedging relationships, subject to meeting certain criteria. When elected, the optional expedients for contract modifications must be applied consistently for all eligible contracts or eligible transactions within the relevant topic or industry subtopic within the codification that contains the guidance that otherwise would be required to be applied. The amendments in ASU 2020-04 were effective for all entities as of March 12, 2020 through December 31, 2022. In January 2021, the FASB issued ASU 2021-01, Reference Rate Reform (Topic 848) ("ASU 2021-01"). The amendments in ASU 2021-01 clarified 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. Specifically, certain provisions in Topic 848, if elected by an entity, apply to derivative instruments that use an interest rate for margining, discounting, or contract price alignment that is modified as a result of reference rate reform. Amendments in this Update to the expedients and exceptions in Topic 848 capture the incremental consequences of the scope clarification and tailor the existing guidance to derivative instruments affected by the discounting transition. The amendments in ASU 2021-01 are elective and apply to all entities that have derivative instruments that use an interest rate for margining, discounting, or contract price alignment that is modified as a result of reference rate reform. The amendments also optionally apply to all entities that designate receive-variable-rate, pay-variable-rate cross-currency interest rate swaps as hedging instruments in net investment hedges that are modified as a result of reference rate reform. The amendments in ASU 2021-01 were effective immediately for all entities. ASU 2021-01 is not expected to have a material effect on our consolidated financial statements. Sale-leaseback Transaction: In September 2021, the Company completed a sale-leaseback transaction for one of its branch locations. The Company sold the branch for $4.2 million and recognized a gain of $841 thousand. The Company also entered into a 5-year lease agreement for this branch and recognized a right-of-use asset and lease liability for $811 thousand.

FAIR VALUES OF FINANCIAL INSTRU

FAIR VALUES OF FINANCIAL INSTRUMENTS	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
FAIR VALUES OF FINANCIAL INSTRUMENTS	FAIR VALUES OF FINANCIAL INSTRUMENTS Fair Value Hierarchy ASC 820-10 establishes a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The topic describes three levels of inputs that may be used to measure fair value: • Level 1: Quoted prices (unadjusted) for identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date. • Level 2: Significant observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. • Level 3: Significant unobservable inputs that reflect a reporting entity’s own assumptions about the assumptions that market participants would use in pricing an asset or liability. Categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. Assets and Liabilities Measured on a Recurring Basis Securities Available-for-Sale: The fair values of securities available-for-sale are generally determined by quoted market prices in active markets, if available (Level 1). If quoted market prices are not available, we primarily employ independent pricing services that utilize pricing models to calculate fair value. Such fair value measurements consider observable data such as dealer quotes, market spreads, cash flows, yield curves, live trading levels, trade execution data, market consensus prepayment speeds, credit information, and respective terms and conditions for debt instruments (Level 2). We employ procedures to monitor the pricing service's assumptions and establish processes to challenge the pricing service's valuations that appear unusual or unexpected. Multiple quotes or prices may be obtained in this process and we determine which fair value is most appropriate based on market information and analysis. Quotes obtained through this process are generally non-binding. We follow established procedures to ensure that assets and liabilities are properly classified in the fair value hierarchy. Level 2 securities include SBA loan pool securities, U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities, non-agency residential mortgage-backed securities, non-agency commercial mortgage-backed securities, collateralized loan obligations, and corporate debt securities. When a market is illiquid or there is a lack of transparency around the inputs to valuation, including at least one unobservable input, the securities are classified as Level 3 and reliance is placed upon internally developed models and management's judgment and evaluation for valuation. We had no securities available-for-sale classified as Level 3 at September 30, 2021 or December 31, 2020. Loans Held-for-Sale, Carried at Fair Value: The fair value of loans held-for-sale is based on commitments outstanding from investors and current offerings in the secondary market for portfolios with similar characteristics, except for loans that are repurchased out of GNMA loan pools that become severely delinquent which are valued based on an internal model. Loans held-for-sale subject to recurring fair value adjustments are classified as Level 2, or in the case of loans repurchased, Level 3. The fair value includes the servicing value of the loans and any accrued interest. Derivative Assets and Liabilities: Interest Rate Swaps. We offer interest rate swap products to certain loan clients to allow them to hedge the risk of rising interest rates on their variable rate loans. We originate a variable rate loan and enter into a variable-to-fixed interest rate swap with the client. We also enter into an offsetting swap with a correspondent bank. These back-to-back agreements are intended to offset each other and allow us to originate a variable rate loan while providing a contract for fixed interest payments for the client. The net cash flow for us is equal to the interest income received from a variable rate loan originated with the client plus a fee. The fair value of these derivatives is based on a discounted cash flow approach. Due to the observable nature of the inputs used in deriving the fair value of these derivative contracts, the valuation of interest rate swaps is classified as Level 2. Foreign Exchange Contracts. We offer short-term foreign exchange contracts to customers to purchase and/or sell foreign currencies at set rates in the future. These products allow customers to hedge the foreign exchange rate risk of their deposits and loans denominated in foreign currencies. In conjunction with these products, we also enter into offsetting back-to-back contracts with institutional counterparties to hedge the Company’s foreign exchange rate risk. These back-to-back contracts are intended to offset each other and allow us to offer our customers foreign exchange products. The fair value of both of these offsetting asset and liability instruments is based on the change in the underlying foreign exchange rate. We are subject to counterparty risk in the event our customers or institutional counterparties default under these contracts. Given the short-term nature of the contracts, the counterparties’ credit risks are considered nominal and typically result in no adjustments to the valuation of the short-term foreign exchange contracts. Due to the observable nature of the inputs used in deriving the fair value of these derivative contracts, the valuation of these contracts is classified as Level 2. The following table presents our financial assets and liabilities measured at fair value on a recurring basis as of the dates indicated: Fair Value Measurement Level ($ in thousands) Carrying Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs September 30, 2021 Assets Securities available-for-sale: SBA loan pools securities $ 15,421 $ — $ 15,421 $ — U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities 193,286 — 193,286 — U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations 255,305 — 255,305 — Municipal securities 120,417 — 120,417 — Non-agency residential mortgage-backed securities 154 — 154 — Collateralized loan obligations 549,277 — 549,277 — Corporate debt securities 169,508 — 169,508 — Loans held-for-sale, carried at fair value 3,422 — 2,427 995 Derivative assets: Interest rate swaps (1) 4,495 — 4,495 — Foreign exchange contracts (1) 173 — 173 — Liabilities Derivative liabilities: Interest rate swaps (2) 4,739 — 4,739 — Foreign exchange contracts (2) 159 — 159 — December 31, 2020 Assets Securities available-for-sale: SBA loan pools securities $ 17,354 $ — $ 17,354 $ — U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities 106,384 — 106,384 — U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations 211,831 — 211,831 — Municipal securities 68,623 — 68,623 — Non-agency residential mortgage-backed securities 160 — 160 — Collateralized loan obligations 677,785 — 677,785 — Corporate debt securities 149,294 — 149,294 — Loans held-for-sale, carried at fair value 1,413 — 468 945 Derivative assets: Interest rate swaps (1) 7,304 — 7,304 — Foreign exchange contracts (1) 328 — 328 — Liabilities Derivative liabilities: Interest rate swaps (2) 7,789 — 7,789 — Foreign exchange contracts (2) 313 — 313 — (1) Included in other assets in the Consolidated Statements of Financial Condition. (2) Included in accrued expenses and other liabilities in the Consolidated Statements of Financial Condition. The following table presents a reconciliation of assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the periods indicated: Three Months Ended Nine Months Ended ($ in thousands) 2021 2020 2021 2020 Loans repurchased from GNMA Loan Pools Balance at beginning of period $ 941 $ 16,685 $ 945 $ 19,233 Total gains (losses) (realized/unrealized): Included in earnings—fair value adjustment 57 18 57 (1,351) Sales, settlements, and other (3) (15,320) (7) (16,499) Balance at end of period $ 995 $ 1,383 $ 995 $ 1,383 Loans repurchased from GNMA loan pools had aggregate unpaid principal balances of $1.0 million as of September 30, 2021 and December 31, 2020. The significant unobservable inputs used in the fair value measurement of our loans repurchased from GNMA loan pools at September 30, 2021 and December 31, 2020 included an expected loss rate of 1.55% for insured loans and 20.00% for uninsured loans. There may be inherent weaknesses in any valuation technique and/or changes in the underlying assumptions used, such as discount rates and estimates of future cash flows, that could significantly affect the results. Fair Value Option Loans Held-for-Sale, Carried at Fair Value: We elected the fair value option for certain SFR mortgage loans held-for-sale. Electing to measure SFR mortgage loans held-for-sale at fair value reduces certain timing differences and better matches changes in the value of these assets with changes in the value of derivatives used as economic hedges for these assets. We also elected to record loans repurchased from GNMA at fair value, as we intend to sell them after curing any defects and, accordingly, they are classified as held-for-sale. The following table presents the fair value and aggregate principal balance of certain assets under the fair value option: September 30, 2021 December 31, 2020 ($ in thousands) Fair Value Unpaid Principal Balance Difference Fair Value Unpaid Principal Balance Difference Loans held-for-sale, carried at fair value: Total loans $ 3,422 $ 3,677 $ (255) $ 1,413 $ 1,680 $ (267) Nonaccrual loans (1) 698 747 (49) 654 750 (96) (1) Includes loans guaranteed by the U.S. government of $189 thousand and $190 thousand at September 30, 2021 and December 31, 2020. There were no loans held-for-sale that were 90 days or more past due and still accruing interest as of September 30, 2021 and December 31, 2020. The assets accounted for under the fair value option are initially measured at fair value. Gains and losses from initial measurement and subsequent changes in fair value are recognized in earnings. The following table presents changes in fair value related to initial measurement and subsequent changes in fair value included in earnings for these assets measured at fair value for the periods indicated: Three Months Ended Nine Months Ended ($ in thousands) 2021 2020 2021 2020 Net gains (losses) from fair value changes: Fair value adjustment for loans held-for-sale $ 160 $ 24 $ 180 $ (1,537) Interest income on loans held-for-sale under the fair value option is measured based on the contractual interest rate and reported in interest income on loans, including fees in the consolidated statements of operations. Assets and Liabilities Measured on a Non-Recurring Basis Impaired Loans: The fair value of impaired loans with specific allocations of the ACL based on collateral is generally based on recent real estate appraisals and automated valuation models (“AVMs”). These appraisals may utilize a single valuation approach or a combination of approaches including comparable sales and the income approach. Adjustments are routinely made in the appraisal process by the appraisers for differences between the comparable sales and income data available. Such adjustments are typically deemed significant unobservable inputs used for determining fair value and result in a Level 3 classification. The following table presents our financial assets and liabilities measured at fair value on a non-recurring basis as of the dates indicated: Fair Value Measurement Level ($ in thousands) Carrying Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs September 30, 2021 Assets Collateral dependent loans: Single family residential mortgage $ 2,319 $ — $ — $ 2,319 SBA 3,925 — — 3,925 December 31, 2020 Assets Collateral dependent loans: SBA $ 629 $ — $ — $ 629 The following table presents the gains (losses) recognized on assets measured at fair value on a non-recurring basis for the periods indicated: Three Months Ended Nine Months Ended ($ in thousands) 2021 2020 2021 2020 Collateral dependent loans: Single family residential mortgage $ — $ (191) $ (211) $ (169) Commercial and industrial — (2,285) 38 (9,707) SBA (1,377) (533) (1,886) (1,722) Commercial real estate 2 — (138) — Estimated Fair Values of Financial Instruments The following table presents the carrying amounts and estimated fair values of financial assets and liabilities as of the dates indicated: Carrying Amount Fair Value Measurement Level ($ in thousands) Level 1 Level 2 Level 3 Total September 30, 2021 Financial assets Cash and cash equivalents $ 185,840 $ 185,840 $ — $ — $ 185,840 Securities available-for-sale 1,303,368 — 1,303,368 — 1,303,368 Federal Home Loan Bank and other bank stock 44,604 — 44,604 — 44,604 Loans held-for-sale, carried at fair value 3,422 — 2,427 995 3,422 Loans receivable, net of allowance for credit losses 6,155,051 — — 6,235,625 6,235,625 Accrued interest receivable 30,546 30,546 — — 30,546 Derivative assets 4,668 — 4,668 — 4,668 Financial liabilities Deposits 6,543,225 — — 6,543,653 6,543,653 Advances from Federal Home Loan Bank 405,738 — 437,111 — 437,111 Other borrowings 100,000 — 100,000 — 100,000 Long-term debt 256,706 — 274,493 — 274,493 Derivative liabilities 4,898 — 4,898 — 4,898 Accrued interest payable 6,645 6,645 — — 6,645 December 31, 2020 Financial assets Cash and cash equivalents $ 220,819 $ 220,819 $ — $ — $ 220,819 Securities available-for-sale 1,231,431 — 1,231,431 — 1,231,431 Federal Home Loan Bank and other bank stock 44,506 — 44,506 — 44,506 Loans held-for-sale 1,413 — 468 945 1,413 Loans receivable, net of allowance for credit losses 5,817,375 — — 5,936,708 5,936,708 Accrued interest receivable 29,445 29,445 — — 29,445 Derivative assets 7,632 — 7,632 — 7,632 Financial liabilities Deposits 6,085,800 — — 6,087,714 6,087,714 Advances from Federal Home Loan Bank 539,795 — 585,416 — 585,416 Long-term debt 256,315 — 273,230 — 273,230 Derivative liabilities 8,102 — 8,102 — 8,102 Accrued interest payable 3,714 3,714 — — 3,714

INVESTMENT SECURITIES

INVESTMENT SECURITIES	9 Months Ended
	Sep. 30, 2021
Investments, Debt and Equity Securities [Abstract]
INVESTMENT SECURITIES	INVESTMENT SECURITIES The following table presents the amortized cost and fair value of the investment securities portfolio as of the dates indicated: ($ in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value September 30, 2021 Securities available-for-sale: SBA loan pool securities $ 15,489 $ — $ (68) $ 15,421 U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities 190,708 3,556 (978) 193,286 U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations 254,775 2,062 (1,532) 255,305 Municipal securities 117,955 3,167 (705) 120,417 Non-agency residential mortgage-backed securities 149 5 — 154 Collateralized loan obligations 551,775 — (2,498) 549,277 Corporate debt securities 156,995 12,513 — 169,508 Total securities available-for-sale $ 1,287,846 $ 21,303 $ (5,781) $ 1,303,368 December 31, 2020 Securities available-for-sale: SBA loan pool securities $ 17,436 $ — $ (82) $ 17,354 U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities 99,591 6,793 — 106,384 U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations 209,426 2,571 (166) 211,831 Municipal securities 64,355 4,272 (4) 68,623 Non-agency residential mortgage-backed securities 156 4 — 160 Collateralized loan obligations 687,505 — (9,720) 677,785 Corporate debt securities 141,975 7,319 — 149,294 Total securities available-for-sale $ 1,220,444 $ 20,959 $ (9,972) $ 1,231,431 At September 30, 2021, our investment securities portfolio consisted of agency securities, municipal securities, mortgage-backed securities, collateralized loan obligations (“CLOs”), and corporate debt securities. The expected maturities of these types of securities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. There was no allowance for credit losses for debt securities as of September 30, 2021 and December 31, 2020. Accrued interest receivable on debt securities available-for-sale totaled $5.9 million at both September 30, 2021 and December 31, 2020, and is included within other assets in the accompanying consolidated statements of financial condition. At September 30, 2021 and December 31, 2020, there were no holdings of any one issuer, other than U.S. government agency and sponsored enterprises, in an amount greater than 10 percent of our stockholders’ equity. The following table presents proceeds from sales and calls of securities available-for-sale and the associated gross gains and losses realized through earnings upon the sales and calls of securities available-for-sale for the periods indicated: Three Months Ended Nine Months Ended ($ in thousands) 2021 2020 2021 2020 Gross realized gains $ — $ — $ — $ 2,011 Gross realized losses — — — — Net realized gains on sales and calls $ — $ — $ — $ 2,011 Proceeds from sales and calls (1) $ 20,000 $ — $ 120,230 $ 52,727 (1) Includes proceeds from CLO resets Investment securities with carrying values of $28.9 million and $43.7 million as of September 30, 2021 and December 31, 2020, were pledged to secure FHLB advances, public deposits or for other purposes as required or permitted by law. The following table summarizes the investment securities with unrealized losses by security type and length of time in a continuous, unrealized loss position as of the dates indicated: Less Than 12 Months 12 Months or Longer Total ($ in thousands) Fair Gross Unrealized Losses Fair Gross Unrealized Losses Fair Gross Unrealized Losses September 30, 2021 Securities available-for-sale: SBA loan pool securities $ 3,476 $ (6) $ 11,945 $ (62) $ 15,421 $ (68) U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities 54,501 (978) — — 54,501 (978) U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations 77,262 (1,048) 9,686 (484) 86,948 (1,532) Municipal securities 43,346 (261) 10,945 (444) 54,291 (705) Collateralized loan obligations 66,956 (44) 258,320 (2,454) 325,276 (2,498) Total securities available-for-sale $ 245,541 $ (2,337) $ 290,896 $ (3,444) $ 536,437 $ (5,781) December 31, 2020 SBA loan pool securities $ 17,354 $ (82) $ — $ — $ 17,354 $ (82) U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations 19,033 (166) — — 19,033 (166) Municipal securities 11,401 (4) — — 11,401 (4) Collateralized loan obligations 64,775 (225) 613,010 (9,495) 677,785 (9,720) Total securities available-for-sale $ 112,563 $ (477) $ 613,010 $ (9,495) $ 725,573 $ (9,972) At September 30, 2021, our securities available-for-sale portfolio consisted of 116 securities, of which 44 securities were in an unrealized loss position. At December 31, 2020, our securities available-for-sale portfolio consisted of 103 securities, of which 50 securities were in an unrealized loss position. We monitor our securities portfolio to ensure it has adequate credit support. The majority of unrealized losses are related to our collateralized loan obligations. We consider the lowest credit rating for identification of credit impairment for collateralized loan obligations and other securities. As of September 30, 2021, all of our collateralized loan obligations investment securities in an unrealized loss position received an investment grade credit rating. The improvement in fair value was attributable to a combination of changes in interest rates and tightening of credit spreads from improving economic conditions. We do not currently intend to sell any of the securities in an unrealized loss position and further believe, it is more likely than not, that we will not be required to sell these securities before their anticipated recovery. Securities that are in an unrealized gain position or are trading at par are evaluated for continued inclusion in our portfolio based on interest rate, liquidity and yield objectives of the Company. During the three and nine months ended September 30, 2021 and 2020, no provision for credit losses related to securities available-for-sale was recorded. The following table presents the fair value and yield information of the investment securities portfolio, based on the earlier of maturity dates or next repricing date, as of September 30, 2021: One year or less More than One Year through Five Years More than Five Years through Ten Years More than Ten Years Total ($ in thousands) Fair Weighted-Average Yield Fair Weighted-Average Yield Fair Weighted-Average Yield Fair Weighted-Average Yield Fair Weighted-Average Yield Securities available-for-sale: SBA loan pool securities $ 15,421 0.93 % $ — — % $ — — % $ — — % $ 15,421 0.93 % U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities — — % — — % 29,294 2.20 % 163,992 2.16 % 193,286 2.17 % U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations 105,662 0.63 % 10,978 1.97 % 42,423 1.34 % 96,242 1.75 % 255,305 1.23 % Municipal securities — — % — — % 15,425 2.62 % 104,992 2.37 % 120,417 2.40 % Non-agency residential mortgage-backed securities — — % — — % — — % 154 6.36 % 154 6.36 % Collateralized loan obligations 549,277 1.76 % — — % — — % — — % 549,277 1.76 % Corporate debt securities — — % 151,201 4.82 % 18,307 5.73 % — — % 169,508 4.91 % Total securities available-for-sale $ 670,360 1.56 % $ 162,179 4.62 % $ 105,449 2.42 % $ 365,380 2.11 % $ 1,303,368 2.15 %

LOANS AND ALLOWANCE FOR CREDIT

LOANS AND ALLOWANCE FOR CREDIT LOSSES	9 Months Ended
	Sep. 30, 2021
Receivables [Abstract]
LOANS AND ALLOWANCE FOR CREDIT LOSSES	LOANS AND ALLOWANCE FOR CREDIT LOSSES The following table presents the balances in our loan portfolio as of the dates indicated: ($ in thousands) September 30, December 31, Commercial: Commercial and industrial (1) $ 2,296,626 $ 2,088,308 Commercial real estate 907,224 807,195 Multifamily 1,295,613 1,289,820 SBA (2) 181,582 273,444 Construction 130,536 176,016 Consumer: Single family residential mortgage 1,393,696 1,230,236 Other consumer 23,298 33,386 Total loans (3) $ 6,228,575 $ 5,898,405 Allowance for loan losses (73,524) (81,030) Loans receivable, net $ 6,155,051 $ 5,817,375 (1) Includes warehouse lending balances of $1.52 billion and $1.34 billion at September 30, 2021 and December 31, 2020. (2) Includes 566 PPP loans totaling $116.5 million, net of unamortized loan fees totaling $2.0 million at September 30, 2021 and 949 PPP loans totaling $210.0 million, net of unamortized loan fees totaling $1.6 million at December 31, 2020. (3) Includes net deferred loan origination costs (fees) and premiums (discounts) of $12.5 million and $6.2 million at September 30, 2021 and December 31, 2020. Credit Quality Indicators We categorize loans into risk categories based on relevant information about the ability of borrowers to repay their debt such as current financial information, historical payment experience, credit documentation, public information, and current economic trends, among other factors. We perform a historical loss analysis that is combined with a comprehensive loan to value analysis to analyze the associated risks in the current loan portfolio. We analyze loans individually and grade each loan for credit risk. This analysis includes all loans delinquent over 60 days and non-homogeneous loans such as commercial and commercial real estate loans. We use the following definitions for credit risk ratings: Pass : Loans risk rated as pass are in compliance in all respects with the Bank’s credit policy and regulatory requirements, and do not exhibit any potential or defined weakness as defined under “Special Mention”, “Substandard” or “Doubtful.” Special Mention : Loans risk rated as special mention have potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loans or of our credit position at some future date. Substandard : Loans risk rated as substandard are inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so risk rated have well-defined weaknesses or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that we will sustain some loss if the deficiencies are not corrected. Doubtful : Loans classified as doubtful have all the weaknesses inherent in those classified as substandard, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. The following table presents the risk categories for total loans by class of loans and origination year as of September 30, 2021: Term Loans Amortized Cost Basis by Origination Year ($ in thousands) 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Revolving Loans Amortized Cost Basis Total September 30, 2021 Commercial: Commercial and industrial Pass $ 146,752 $ 70,137 $ 64,881 $ 61,184 $ 45,261 $ 99,395 $ 1,712,167 $ 10,548 $ 2,210,325 Special mention — 3,242 13,803 3,617 11,976 8,690 14,498 7,135 62,961 Substandard — — 3,076 4,969 — 9,641 3,194 2,460 23,340 Doubtful — — — — — — — — — Commercial and industrial 146,752 73,379 81,760 69,770 57,237 117,726 1,729,859 20,143 2,296,626 Commercial real estate Pass 255,677 57,232 132,886 161,355 54,060 213,050 2,108 73 876,441 Special mention — — — 1,934 — 10,999 3,762 — 16,695 Substandard — — 508 — — 13,580 — — 14,088 Doubtful — — — — — — — — — Commercial real estate 255,677 57,232 133,394 163,289 54,060 237,629 5,870 73 907,224 Multifamily Pass 280,570 209,591 295,012 218,476 78,659 148,610 107 — 1,231,025 Special mention — 2,004 15,397 11,308 — 33,949 — — 62,658 Substandard — — — — — 1,930 — — 1,930 Doubtful — — — — — — — — — Multifamily 280,570 211,595 310,409 229,784 78,659 184,489 107 — 1,295,613 SBA Pass 101,405 30,143 7,555 249 3,508 19,750 358 303 163,271 Special mention — — 1,731 900 — 1,181 255 4 4,071 Substandard — — — 390 3,631 7,017 247 918 12,203 Doubtful — — — — — 1,777 — 260 2,037 SBA 101,405 30,143 9,286 1,539 7,139 29,725 860 1,485 181,582 Construction Pass 24,867 30,494 19,184 16,694 29,622 — — — 120,861 Special mention — — — 1,537 — 8,138 — — 9,675 Substandard — — — — — — — — — Doubtful — — — — — — — — — Construction 24,867 30,494 19,184 18,231 29,622 8,138 — — 130,536 Consumer: Single family residential mortgage Pass 550,466 125,669 79,395 162,821 103,351 328,357 12,557 — 1,362,616 Special mention — — — 1,255 696 6,831 — — 8,782 Substandard — — — 6,403 1,707 13,949 239 — 22,298 Doubtful — — — — — — — — — Single family residential mortgage 550,466 125,669 79,395 170,479 105,754 349,137 12,796 — 1,393,696 Other consumer Pass 1,110 — — 8 — 1,753 18,022 2,221 23,114 Special mention — — — — — 27 60 — 87 Substandard — — — — — — 97 — 97 Doubtful — — — — — — — — — Other consumer 1,110 — — 8 — 1,780 18,179 2,221 23,298 Total loans $ 1,360,847 $ 528,512 $ 633,428 $ 653,100 $ 332,471 $ 928,624 $ 1,767,671 $ 23,922 $ 6,228,575 Total loans Pass $ 1,360,847 $ 523,266 $ 598,913 $ 620,787 $ 314,461 $ 810,915 $ 1,745,319 $ 13,145 $ 5,987,653 Special mention — 5,246 30,931 20,551 12,672 69,815 18,575 7,139 164,929 Substandard — — 3,584 11,762 5,338 46,117 3,777 3,378 73,956 Doubtful — — — — — 1,777 — 260 2,037 Total loans $ 1,360,847 $ 528,512 $ 633,428 $ 653,100 $ 332,471 $ 928,624 $ 1,767,671 $ 23,922 $ 6,228,575 The following table presents the risk categories for total loans by class of loans and origination year as of December 31, 2020: Term Loans Amortized Cost Basis by Origination Year ($ in thousands) 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Revolving Loans Amortized Cost Basis Total December 31, 2020 Commercial: Commercial and industrial Pass $ 99,015 $ 78,783 $ 70,248 $ 52,786 $ 44,536 $ 92,129 $ 1,572,259 $ 9,945 $ 2,019,701 Special mention — 928 2,748 7,986 1,574 2,271 1,500 225 17,232 Substandard — 13,937 6,262 4,618 — 9,264 12,598 4,696 51,375 Doubtful — — — — — — — — — Commercial and industrial 99,015 93,648 79,258 65,390 46,110 103,664 1,586,357 14,866 2,088,308 Commercial real estate Pass 75,432 150,731 192,831 63,144 91,454 182,756 2,682 1,582 760,612 Special mention — — 9,452 — 2,518 14,754 3,761 — 30,485 Substandard — — — — — 16,098 — — 16,098 Doubtful — — — — — — — — — Commercial real estate 75,432 150,731 202,283 63,144 93,972 213,608 6,443 1,582 807,195 Multifamily Pass 239,449 407,532 275,881 110,105 97,160 154,841 27 — 1,284,995 Special mention — 2,050 — — — 803 — — 2,853 Substandard — — — — — 1,972 — — 1,972 Doubtful — — — — — — — — — Multifamily 239,449 409,582 275,881 110,105 97,160 157,616 27 — 1,289,820 SBA Pass 211,962 14,082 1,260 3,746 11,087 18,589 3,111 1,014 264,851 Special mention — 1,768 — 212 415 874 — 6 3,275 Substandard — — — 1,319 682 1,855 226 755 4,837 Doubtful — — 390 — — — — 91 481 SBA 211,962 15,850 1,650 5,277 12,184 21,318 3,337 1,866 273,444 Construction Pass 41,677 30,387 45,397 50,024 — — — — 167,485 Special mention — — 1,537 — 6,994 — — — 8,531 Substandard — — — — — — — — — Doubtful — — — — — — — — — Construction 41,677 30,387 46,934 50,024 6,994 — — — 176,016 Consumer: Single family residential mortgage Pass 149,382 140,129 271,667 161,332 237,285 227,711 15,252 — 1,202,758 Special mention — — 1,837 688 4,868 4,460 — — 11,853 Substandard — 157 491 1,079 4,978 8,920 — — 15,625 Doubtful — — — — — — — — — Single family residential mortgage 149,382 140,286 273,995 163,099 247,131 241,091 15,252 — 1,230,236 Other consumer Pass 38 — 47 — — 1,876 27,644 2,218 31,823 Special mention — — — — — 30 1,185 — 1,215 Substandard — — — — — — 274 74 348 Doubtful — — — — — — — — — Other consumer 38 — 47 — — 1,906 29,103 2,292 33,386 Total loans $ 816,955 $ 840,484 $ 880,048 $ 457,039 $ 503,551 $ 739,203 $ 1,640,519 $ 20,606 $ 5,898,405 Total loans Pass $ 816,955 $ 821,644 $ 857,331 $ 441,137 $ 481,522 $ 677,902 $ 1,620,975 $ 14,759 $ 5,732,225 Special mention — 4,746 15,574 8,886 16,369 23,192 6,446 231 75,444 Substandard — 14,094 6,753 7,016 5,660 38,109 13,098 5,525 90,255 Doubtful — — 390 — — — — 91 481 Total loans $ 816,955 $ 840,484 $ 880,048 $ 457,039 $ 503,551 $ 739,203 $ 1,640,519 $ 20,606 $ 5,898,405 Past Due Loans The following table presents the aging of the recorded investment in past due loans, excluding accrued interest receivable (which is not considered to be material), by class of loans as of the dates indicated: ($ in thousands) 30 - 59 Days Past Due 60 - 89 Days Past Due Greater than 89 Days Past due Total Past Due Current Total September 30, 2021 Non-Traditional Mortgage (NTM) loans: Single family residential mortgage $ 7,098 $ — $ 2,407 $ 9,505 $ 560,276 $ 569,781 Other consumer — — — — 1,597 1,597 Total NTM loans 7,098 — 2,407 9,505 561,873 571,378 Traditional loans: Commercial: Commercial and industrial 3,624 3,796 2,876 10,296 2,286,330 2,296,626 Commercial real estate — — — — 907,224 907,224 Multifamily 791 — — 791 1,294,822 1,295,613 SBA 2,545 — 12,385 14,930 166,652 181,582 Construction — — — — 130,536 130,536 Consumer: Single family residential mortgage 4,274 1,016 4,311 9,601 814,314 823,915 Other consumer — — — — 21,701 21,701 Total traditional loans 11,234 4,812 19,572 35,618 5,621,579 5,657,197 Total $ 18,332 $ 4,812 $ 21,979 $ 45,123 $ 6,183,452 $ 6,228,575 December 31, 2020 NTM loans: Single family residential mortgage $ 4,200 $ 641 $ 6,548 $ 11,389 $ 424,126 $ 435,515 Other consumer — — — — 1,598 1,598 Total NTM loans 4,200 641 6,548 11,389 425,724 437,113 Traditional loans: Commercial: Commercial and industrial 67 — 4,284 4,351 2,083,957 2,088,308 Commercial real estate — — — — 807,195 807,195 Multifamily — — — — 1,289,820 1,289,820 SBA 354 626 3,062 4,042 269,402 273,444 Construction — — — — 176,016 176,016 Consumer: Single family residential mortgage 6,836 980 3,742 11,558 783,163 794,721 Other consumer 216 61 — 277 31,511 31,788 Total traditional loans 7,473 1,667 11,088 20,228 5,441,064 5,461,292 Total $ 11,673 $ 2,308 $ 17,636 $ 31,617 $ 5,866,788 $ 5,898,405 Nonaccrual Loans The following table presents nonaccrual loans as of the dates indicated: September 30, 2021 December 31, 2020 ($ in thousands) NTM Loans Traditional Loans Total Nonaccrual Loans with no ACL NTM Loans Traditional Loans Total Nonaccrual Loans with no ACL Nonaccrual loans Commercial: Commercial and industrial $ — $ 11,834 $ 11,834 $ 11,834 $ — $ 13,821 $ 13,821 $ 13,088 Commercial real estate — 4,419 4,419 4,419 — 4,654 4,654 4,654 SBA — 12,824 12,824 5,204 — 3,749 3,749 648 Consumer: Single family residential mortgage 6,644 9,900 16,544 14,015 8,697 4,822 13,519 13,519 Other consumer — — — — — 157 157 157 Total nonaccrual loans $ 6,644 $ 38,977 $ 45,621 $ 35,472 $ 8,697 $ 27,203 $ 35,900 $ 32,066 At September 30, 2021 and December 31, 2020, there were zero and $728 thousand of loans that were past due 90 days or more and still accruing. The non-traditional mortgage (“NTM”) loans on nonaccrual status included $3.3 million of Green Loans and $3.3 million of Interest Only loans at September 30, 2021 compared to $4.0 million of Green Loans and $4.7 million of Interest Only loans at December 31, 2020. Other Real Estate Owned, Net and Loans in Process of Foreclosure At September 30, 2021 and December 31, 2020, there was no other real estate owned. During the three and nine months ended September 30, 2021, other real estate owned, consisting of one SFR property totaling $3.3 million, was sold at a gain of $365 thousand. During the three and nine months ended September 30, 2020, other real estate owned, consisting of one SFR property totaling $1.1 million, was sold at a loss of $38 thousand. At September 30, 2021 and December 31, 2020, there was one and zero consumer mortgage loans secured by residential real estate properties totaling $2.5 million and zero for which formal foreclosure proceedings were in process according to local requirements of the applicable jurisdiction. Allowance for Credit Losses The ACL methodology uses a nationally recognized, third-party model that includes many assumptions based on historical and peer loss data, current loan portfolio risk profile including risk ratings, and economic forecasts including macroeconomic variables (MEVs) released by our model provider during September 2021. The September 2021 forecasts reflect a more favorable view of the economy (i.e. higher GDP growth rates and lower unemployment rates) compared to the June 2021 forecasts. While the current forecasts generally reflect an improving economy with the availability of the vaccine and other factors, there continues to be uncertainty regarding the impact of inflation (lasting or transitory), COVID-19 variants, further government stimulus, supply chain issues, and the ultimate pace of the recovery. Accordingly, our economic assumptions, the resulting ACL level and provision reversal consider both the positive assumptions and potential uncertainties. The ACL also incorporated qualitative factors to account for certain loan portfolio characteristics that are not taken into consideration by the third-party model including underlying strengths and weaknesses in various segments of the loan portfolio. As is the case with all estimates, the ACL is expected to be impacted in future periods by economic volatility, changing economic forecasts, underlying model assumptions, and asset quality metrics, all of which may be better than or worse than current estimates. The ACL process involves subjective and complex judgments as well as adjustments for numerous factors including those described in the federal banking agencies' joint interagency policy statement on ALL, which include underwriting experience and collateral value changes, among others. We have established credit risk management processes that include regular management review of the loan portfolio to identify problem loans. During the ordinary course of business, management may become aware of borrowers who may not be able to fulfill their contractual payment requirements within the loan agreements. Such loans are subject to increased monitoring. Consideration is given to placing these loans on nonaccrual status, assessing the need for additional allowance for loan loss, and partially or fully charging off the principal balance. We maintain the allowance for loan losses at a level that is considered adequate to cover the current expected credit losses in the loan portfolio. The reserve for unfunded loan commitments is established to cover the current expected credit losses for the estimated level of funding of these loan commitments, except for unconditionally cancellable commitments for which no reserve is required under ASC 326. At September 30, 2021 and December 31, 2020, the reserve for unfunded loan commitments was $5.2 million and $3.2 million, respectively, and was included in accrued expenses and other liabilities on the consolidated statements of financial condition. The credit risk monitoring system is designed to identify impaired and potential problem loans, perform periodic evaluation of impairment, and determine the adequacy of the allowance for credit losses in a timely manner. In addition, management has adopted a credit policy that includes a credit review and control system that it believes should be effective in ensuring that we maintain an adequate allowance for credit losses. Further, the Board of Directors provides oversight and guidance for management’s allowance evaluation process. The following table presents a summary of activity in the ACL for the periods indicated: Three Months Ended September 30, ($ in thousands) 2021 2020 Allowance Reserve for Unfunded Loan Commitments Allowance Allowance Reserve for Unfunded Loan Commitments Allowance Balance at beginning of period $ 75,885 $ 3,814 $ 79,699 $ 90,370 $ 4,195 $ 94,565 Loans charged off (327) — (327) (1,821) — (1,821) Recoveries of loans previously charged off 532 — 532 248 — 248 Net recoveries (charge-offs) 205 — 205 (1,573) — (1,573) (Reversal of) provision for credit losses (2,566) 1,419 (1,147) 2,130 (989) 1,141 Balance at end of period $ 73,524 $ 5,233 $ 78,757 $ 90,927 $ 3,206 $ 94,133 Nine Months Ended September 30, ($ in thousands) 2021 2020 Allowance Reserve for Unfunded Loan Commitments Allowance Allowance Reserve for Unfunded Loan Commitments Allowance Balance at beginning of period $ 81,030 $ 3,183 $ 84,213 $ 57,649 $ 4,064 $ 61,713 Impact of adopting ASU 2016-13 — — — 7,609 (1,226) 6,383 Loans charged off (1,778) — (1,778) (3,897) — (3,897) Recoveries of loans previously charged off 730 — 730 1,206 — 1,206 Net charge-offs (1,048) — (1,048) (2,691) — (2,691) (Reversal of) provision for credit losses (6,458) 2,050 (4,408) 28,360 368 28,728 Balance at end of period $ 73,524 $ 5,233 $ 78,757 $ 90,927 $ 3,206 $ 94,133 Accrued interest receivable on loans receivable, net totaled $23.8 million and $24.7 million at September 30, 2021 and December 31, 2020, and is included within other assets in the accompanying consolidated statements of financial condition. Accrued interest receivable is excluded from the estimate of expected credit losses. The following table presents the activity and balance in the ALL and the recorded investment, excluding accrued interest, in loans as of or for the three and nine months ended September 30, 2021: ($ in thousands) Commercial and Industrial Commercial Real Estate Multifamily SBA Construction Single Family Residential Mortgage Other Consumer Total ALL: Three Months Ended September 30, 2021: Balance at June 30, 2021 $ 20,156 $ 16,424 $ 21,403 $ 3,696 $ 4,734 $ 9,108 $ 364 $ 75,885 Charge-offs (115) (138) — (74) — — — (327) Recoveries 484 — — 1 — 46 1 532 Net recoveries (charge-offs) 369 (138) — (73) — 46 1 205 (Reversal of) provision for credit losses - loans (270) (269) (2,678) 1,112 (616) 150 5 (2,566) Balance at September 30, 2021 $ 20,255 $ 16,017 $ 18,725 $ 4,735 $ 4,118 $ 9,304 $ 370 $ 73,524 Nine Months Ended September 30, 2021: Balance at December 31, 2020 $ 20,608 $ 19,074 $ 22,512 $ 3,145 $ 5,849 $ 9,191 $ 651 $ 81,030 Charge-offs (1,180) (138) — (460) — — — (1,778) Recoveries 553 — — 130 — 46 1 730 Net (charge-offs) recoveries (627) (138) — (330) — 46 1 (1,048) Provision for (reversal of) credit losses - loans 274 (2,919) (3,787) 1,920 (1,731) 67 (282) (6,458) Balance at September 30, 2021 $ 20,255 $ 16,017 $ 18,725 $ 4,735 $ 4,118 $ 9,304 $ 370 $ 73,524 The following table presents the activity and balance in the ALL and the recorded investment, excluding accrued interest, in loans as of or for the three and nine months ended September 30, 2020: ($ in thousands) Commercial and Industrial Commercial Real Estate Multifamily SBA Construction Single Family Residential Mortgage Other Consumer Total ALL: Three Months Ended September 30, 2020: Balance at June 30, 2020 $ 26,618 $ 17,372 $ 25,105 $ 4,184 $ 6,675 $ 9,665 $ 751 $ 90,370 Charge-offs (1,597) — — (224) — — — (1,821) Recoveries 116 — — 132 — — — 248 Net charge-offs (1,481) — — (92) — — — (1,573) Provision for (reversal of) credit losses - loans 1,454 2,001 454 (535) (470) (689) (85) 2,130 Balance at September 30, 2020 $ 26,591 $ 19,373 $ 25,559 $ 3,557 $ 6,205 $ 8,976 $ 666 $ 90,927 Nine Months Ended September 30, 2020: Balance at December 31, 2019 $ 22,353 $ 5,941 $ 11,405 $ 3,120 $ 3,906 $ 10,486 $ 438 $ 57,649 Adoption of ASU No. 2016-13 662 4,847 1,809 388 103 (420) 220 7,609 Charge-offs (2,761) — — (580) — (552) (4) (3,897) Recoveries 265 — — 253 — 639 49 1,206 Net (charge-offs) recoveries (2,496) — — (327) — 87 45 (2,691) Provision for (reversal of) credit losses - loans 6,072 8,585 12,345 376 2,196 (1,177) (37) 28,360 Balance at September 30, 2020 $ 26,591 $ 19,373 $ 25,559 $ 3,557 $ 6,205 $ 8,976 $ 666 $ 90,927 Collateral Dependent Loans A loan is considered collateral dependent when the borrower is experiencing financial difficulty and repayment of the loan is expected to be provided substantially through the operation or sale of the collateral. Collateral dependent loans are evaluated individually and the ACL is determined based on the amount by which amortized costs exceed the estimated fair value of the collateral, adjusted for estimated selling costs. Collateral dependent loans consisted of the following as of September 30, 2021 and December 31, 2020: September 30, 2021 Real Estate ($ in thousands) Commercial Residential Business Assets Total Commercial: Commercial and industrial 5,121 — 4,424 9,545 Commercial real estate 2,529 1,890 — 4,419 SBA 70 4,241 8,466 12,777 Consumer: Single family residential mortgage — 22,192 — 22,192 Total loans $ 7,720 $ 28,323 $ 12,890 $ 48,933 December 31, 2020 Real Estate ($ in thousands) Commercial Residential Business Assets Total Commercial: Commercial and industrial 5,492 — 4,965 10,457 Commercial real estate 2,644 2,010 — 4,654 SBA 349 497 2,750 3,596 Consumer: Single family residential mortgage — 17,820 — 17,820 Other consumer — 157 — 157 Total loans $ 8,485 $ 20,484 $ 7,715 $ 36,684 Troubled Debt Restructurings TDR loans consisted of the following as of the dates indicated: September 30, 2021 December 31, 2020 ($ in thousands) NTM Traditional Loans Total NTM Traditional Loans Total Commercial: Commercial and industrial $ — $ 2,289 $ 2,289 $ — $ 3,884 $ 3,884 SBA — 264 264 — 265 265 Consumer: Single family residential mortgage 3,432 2,216 5,648 2,631 2,217 4,848 Other consumer — — — — — — Total $ 3,432 $ 4,769 $ 8,201 $ 2,631 $ 6,366 $ 8,997 We had commitments to lend to customers with outstanding loans that were classified as TDRs of $63 thousand at both September 30, 2021 and December 31, 2020. Accruing TDRs were $5.8 million and nonaccrual TDRs were $2.4 million at September 30, 2021, compared to accruing TDRs of $4.7 million and nonaccrual TDRs of $4.3 million at December 31, 2020. The following table summarizes the pre-modification and post-modification balances of the new TDRs for the periods indicated: Three Months Ended Nine Months Ended ($ in thousands) Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment September 30, 2021 Consumer: Single family residential mortgage — $ — $ — 1 1,800 1,800 Total — — — 1 $ 1,800 $ 1,800 September 30, 2020 Commercial: Commercial and industrial — $ — $ — 1 $ 5,000 $ 5,000 Total — $ — $ — 1 $ 5,000 $ 5,000 We consider a TDR to be in payment default once it becomes 30 days or more past due following a modification. During the three and nine months ended September 30, 2021 and 2020, there were no loans that were modified as a TDR during the past 12 months that had subsequent payment defaults. The following table summarizes TDRs by modification type for the period indicated: Nine Months Ended Modification Type Extension of Maturity Total ($ in thousands) Count Amount Count Amount September 30, 2021 Consumer: Single family residential mortgage 1 1,800 1 1,800 Total 1 $ 1,800 1 $ 1,800 September 30, 2020 Commercial: Commercial and industrial 1 $ 5,000 1 $ 5,000 Total 1 $ 5,000 1 $ 5,000 Purchases, Sales, and Transfers From time to time, we purchase and sell loans in the secondary market. During the three and nine months ended September 30, 2021, we purchased loans aggregating $249.4 million and $615.4 million. During the three and nine months ended September 30, 2020, we purchased loans aggregating $129.0 million and $154.9 million. There were no loans transferred from (to) loans held-for-sale and there were no sales of loans for the three and nine months ended September 30, 2021 and 2020. Non-Traditional Mortgage Loans (“NTM”) Our NTM portfolio includes three types of interest-only loans: Green Loans, Interest Only loans and a small number of loans with the potential for negative amortization. The initial credit guidelines for the NTM portfolio were established based on the borrower's Fair Isaac Corporation (“FICO”) score, LTV ratio, property type, occupancy type, loan amount, and geography. Additionally, from an ongoing credit risk management perspective, we have determined that the most significant performance indicators for NTMs are LTV ratios and FICO scores. We review the NTM loan portfolio periodically by refreshing FICO scores on the Green Loans and HELOCs and ordering third party automated valuation models ("AVMs") to confirm collateral values. We no longer originate NTM loans, however, loans may be purchased which meet the criteria to be considered NTM loans. The following table presents the composition of the NTM portfolio, which are included in the single family residential mortgage portfolio, as of the dates indicated: September 30, 2021 December 31, 2020 ($ in thousands) Count Amount Percent Count Amount Percent Consumer: Single family residential mortgage: Green Loans (HELOC) - first liens 36 $ 25,074 4.4 % 48 $ 31,587 7.2 % Interest Only - first liens 337 543,243 95.1 % 283 401,640 91.9 % Negative amortization 4 1,464 0.3 % 8 2,288 0.5 % Total NTM - first liens 377 569,781 99.7 % 339 435,515 99.6 % Other consumer: Green Loans (HELOC) - second liens 5 1,597 0.3 % 5 1,598 0.4 % Total NTM - second liens 5 1,597 0.3 % 5 1,598 0.4 % Total NTM loans 382 $ 571,378 100.0 % 344 $ 437,113 100.0 % Total loans receivable $ 6,228,575 $ 5,898,405 % of total NTM loans to total loans receivable 9.2 % 7.4 %

GOODWILL AND OTHER INTANGIBLE A

GOODWILL AND OTHER INTANGIBLE ASSETS, NET	9 Months Ended
	Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND OTHER INTANGIBLE ASSETS, NET	GOODWILL AND OTHER INTANGIBLE ASSETS, NET At September 30, 2021 and December 31, 2020, we had goodwill of $37.1 million. We evaluate goodwill impairment as of October 1 st each year, and more frequently if events or circumstances indicate that there may be impairment. We completed our most recent annual goodwill impairment test as of October 1, 2020 and determined that no goodwill impairment existed. Core deposit intangibles are amortized over their useful lives ranging from four ten ($ in thousands) Gross Carrying Value Accumulated Amortization Net Carrying Value September 30, 2021 Core deposit intangibles $ 30,904 $ 29,117 $ 1,787 December 31, 2020 Core deposit intangibles $ 30,904 $ 28,271 $ 2,633 Aggregate amortization of intangible assets was $282 thousand and $353 thousand for the three months ended September 30, 2021 and 2020 and $846 thousand and $1.2 million for the nine months ended September 30, 2021 and 2020. The following table presents estimated future amortization expenses as of September 30, 2021: ($ in thousands) Remainder of 2021 2022 2023 2024 Total Estimated future amortization expense $ 236 $ 799 $ 517 $ 235 $ 1,787

FEDERAL HOME LOAN BANK ADVANCES

FEDERAL HOME LOAN BANK ADVANCES AND OTHER BORROWINGS	9 Months Ended
	Sep. 30, 2021
Federal Home Loan Banks [Abstract]
FEDERAL HOME LOAN BANK ADVANCES AND OTHER BORROWINGS	FEDERAL HOME LOAN BANK ADVANCES AND OTHER BORROWINGS The following table presents advances from the FHLB as of the dates indicated: ($ in thousands) September 30, December 31, Fixed rate: Outstanding balance (1)(2) $ 411,000 $ 461,000 Interest rates ranging from (2) 0.64 % — % Interest rates ranging to 3.32 % 3.32 % Weighted average interest rate 2.53 % 2.51 % Variable rate: Outstanding balance $ — $ 85,000 Weighted average interest rate — % 0.17 % (1) Excludes $5.3 million and $6.2 million of unamortized debt issuance costs at September 30, 2021 and December 31, 2020. (2) Includes zero and $5.0 million in FHLB recovery advances at September 30, 2021 and December 31, 2020 with an interest rate of 0.00% that matured on May 27, 2021. Each advance is payable at its maturity date. Advances paid early are subject to a prepayment penalty. At the end of the third quarter of 2021, FHLB advances included no overnight borrowings and $411.0 million in term advances with a weighted average life of 4.2 years and weighted average interest rate of 2.53%. The Bank’s advances from the FHLB are collateralized by a blanket lien on all real estate loans. Our secured borrowing capacity with the FHLB totaled $1.63 billion, of which the Bank was eligible to borrow an additional $894.9 million at September 30, 2021 based on qualifying loans with an aggregate unpaid principal balance of $2.09 billion as of that date. The Bank’s investment in capital stock of the FHLB of San Francisco totaled $17.3 million at September 30, 2021 and December 31, 2020. At September 30, 2021, the Company had borrowing capacity with the Federal Reserve Bank of San Francisco (“Federal Reserve”) of $349.3 million, including the secured borrowing capacity through the Federal Reserve Discount Window and Borrower-in-Custody ("BIC") program. At September 30, 2021, the Bank has pledged certain qualifying loans with an unpaid principal balance of $617.4 million and securities with a carrying value of $8.9 million as collateral for these lines of credit. Borrowings under the BIC program are overnight advances with interest chargeable at the discount window (“primary credit”) borrowing rate. There were no borrowings under this arrangement for the three and nine months ended September 30, 2021 and 2020. The Bank’s investment in capital stock of the Federal Reserve totaled $27.3 million at September 30, 2021 and December 31, 2020 The Bank maintained available unsecured federal funds lines with five correspondent banks totaling $210.0 million, with no outstanding borrowings at September 30, 2021. The Bank also has the ability to perform unsecured overnight borrowing from various financial institutions through the American Financial Exchange platform (AFX). The availability of such unsecured borrowings fluctuates regularly and are subject to the counterparties discretion and totaled $441.0 million and $196.0 million at September 30, 2021 and December 31, 2020. Borrowings under the AFX totaled $100.0 million and zero at September 30, 2021 and December 31, 2020. The Bank also maintained repurchase agreements and had no outstanding securities sold under agreements to repurchase at September 30, 2021 and December 31, 2020. Availabilities and terms on repurchase agreements are subject to the counterparties' discretion and the pledging of additional investment securities.

LONG-TERM DEBT

LONG-TERM DEBT	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
LONG-TERM DEBT	LONG-TERM DEBT The following table presents our long-term debt as of the dates indicated: September 30, 2021 December 31, 2020 ($ in thousands) Par Value Unamortized Debt Issuance Cost and Discount Par Value Unamortized Debt Issuance Cost and Discount 5.25% senior notes due April 15, 2025 $ 175,000 $ (1,104) $ 175,000 $ (1,291) 4.375% subordinated notes due October 30, 2030 85,000 (2,190) 85,000 (2,394) Total $ 260,000 $ (3,294) $ 260,000 $ (3,685)

INCOME TAXES

INCOME TAXES	9 Months Ended
	Sep. 30, 2021
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES For the three and nine months ended September 30, 2021, income tax expense was $8.7 million and $17.5 million, resulting in an effective tax rate of 27.2% and 23.6%. For the three and nine months ended September 30, 2020, income tax expense (benefit) was an expense of $2.4 million and a benefit of $5.1 million and the effective tax rate was 12.9% and 35.9%. The effective tax rate for the nine months ended September 30, 2021 differs from the 29.5% combined federal and state statutory rate due primarily to the net tax benefit of $2.5 million from share-based awards, including the exercise of all previously issued outstanding stock appreciation rights in the first quarter of 2021 and various permanent tax differences, tax credits and other discrete tax items that impact our effective tax rate. The effective tax rate for the nine months ended September 30, 2020 differs from the 29.5% combined federal and state statutory rate due primarily to applying the discrete effective tax rate method for 2020 based on our actual and projected level of earnings and permanent tax differences for the year. We account for income taxes by recognizing deferred tax assets and liabilities based upon temporary differences between the amounts for financial reporting purposes and the tax basis of our assets and liabilities. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion, or all, of the deferred tax asset will not be realized. In assessing the realization of deferred tax assets, management will continue to evaluate both positive and negative evidence on a quarterly basis, including considering the four possible sources of future taxable income, such as future reversal of existing taxable temporary differences, future taxable income exclusive of reversing temporary differences and carryforwards, taxable income in prior carryback year(s), and future tax planning strategies. Based on this analysis, management determined, it was more likely than not, that all of the deferred tax assets would be realized; therefore, no valuation allowance was provided against the net deferred tax assets of $40.7 million and $46.0 million at September 30, 2021 and December 31, 2020, respectively. ASC 740-10-25 relates to the accounting for uncertainty in income taxes recognized in an enterprise’s financial statements. ASC 740-10-25 prescribes a threshold and a measurement process for recognizing in the financial statements a tax position taken or expected to be taken in a tax return and also provides guidance on de-recognition, classification, interest and penalties, accounting in interim periods, disclosure and transition. We had unrecognized tax benefits of $1.0 million and $924 thousand at September 30, 2021 and December 31, 2020, respectively. We do not believe that the unrecognized tax benefits will change materially in the next twelve months. As of September 30, 2021, the total unrecognized tax benefit that, if recognized, would impact the effective tax rate was $780 thousand. At September 30, 2021 and December 31, 2020, we had no accrued interest or penalties. In the event we are assessed interest and/or penalties by federal or state tax authorities, such amounts will be classified in the consolidated financial statements as income tax expense. We are subject to U.S. federal income tax as well as income tax in multiple state jurisdictions. We are no longer subject to examination by U.S. federal taxing authorities for years before 2017. The statute of limitations for the assessment of California franchise taxes has expired for tax years before 2014 (other state income and franchise tax statutes of limitations vary by state).

DERIVATIVE INSTRUMENTS

DERIVATIVE INSTRUMENTS	9 Months Ended
	Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE INSTRUMENTS	DERIVATIVE INSTRUMENTSWe use derivative instruments and other risk management techniques to reduce our exposure to adverse fluctuations in interest rates and foreign currency exchange rates in accordance with our risk management policies. During the three and nine months ended September 30, 2021, changes in fair value of interest rate swaps on loans and foreign exchange contracts were gains of $41 thousand and $240 thousand, compared to a gain of $3 thousand and a loss of $285 thousand for the three and nine months ended September 30, 2020, and were included in other income on the consolidated statements of operations. The following table presents the notional amount and fair value of derivative instruments included in the consolidated statements of financial condition as of the dates indicated. September 30, 2021 December 31, 2020 ($ in thousands) Notional Amount Fair Notional Amount Fair Derivative assets: Interest rate swaps on loans $ 63,514 $ 4,495 $ 67,840 $ 7,304 Foreign exchange contracts 5,295 173 7,010 328 Total $ 68,809 $ 4,668 $ 74,850 $ 7,632 Derivative liabilities: Interest rate swaps on loans $ 63,514 $ 4,739 $ 67,840 7,789 Foreign exchange contracts 5,295 159 7,010 313 Total $ 68,809 $ 4,898 $ 74,850 $ 8,102 (1) The fair value of interest rate swaps on loans and foreign exchange contracts are included in other assets and accrued expenses and other liabilities, respectively, in the accompanying consolidated statements of financial condition. We have entered into agreements with counterparty financial institutions, which include master netting agreements that provide for the net settlement of all contracts with a single counterparty in the event of default. We elect, however, to account for all derivatives with counterparty institutions on a gross basis.

EMPLOYEE STOCK COMPENSATION

EMPLOYEE STOCK COMPENSATION	9 Months Ended
	Sep. 30, 2021
Share-based Payment Arrangement [Abstract]
EMPLOYEE STOCK COMPENSATION	EMPLOYEE STOCK COMPENSATION On May 31, 2018, our stockholders approved the Company's 2018 Omnibus Stock Incentive Plan (“2018 Omnibus Plan”). The 2018 Omnibus Plan provides that the maximum number of shares available for awards is 4,417,882. As of September 30, 2021, 3,221,555 shares were available for future awards. Stock-based Compensation Expense The following table presents stock-based compensation expense and the related tax benefits for the periods indicated: Three Months Ended Nine Months Ended ($ in thousands) 2021 2020 2021 2020 Stock options $ — $ — $ — $ 4 Restricted stock awards and units 1,106 1,346 3,988 4,388 Total share-based compensation expense $ 1,106 $ 1,346 $ 3,988 $ 4,392 Related tax benefits $ 326 $ 396 $ 1,175 $ 1,293 At September 30, 2021, unrecognized compensation expense related to restricted stock awards and restricted stock units totaled $7.0 million and will be recognized over a weighted average remaining period of 2.1 years. Restricted Stock Awards and Restricted Stock Units We have granted restricted stock awards and restricted stock units to certain employees, officers, and directors. The restricted stock awards and units are valued at the closing price of our stock on the measurement date. The restricted stock awards and units fully vest after a specified period (generally ranging from one performance. We recognize an income tax deduction in an amount equal to the taxable income reported by the holders of the restricted stock, generally upon vesting or, in the case of restricted stock units, when settled. The following table presents unvested restricted stock awards and restricted stock units activity for the three and nine months ended September 30, 2021: Three Months Ended Nine Months Ended Number of Shares Weighted Average Grant Date Fair Value Per Share Number of Shares Weighted Outstanding at beginning of period 697,088 $ 17.13 848,302 $ 14.42 Granted (1) 14,312 $ 17.47 283,642 $ 19.87 Vested (2) (11,809) $ 15.14 (367,089) $ 13.75 Forfeited (3) (38,724) $ 17.31 (103,988) $ 14.24 Outstanding at end of period 660,867 $ 17.16 660,867 $ 17.16 (1) There were zero and 66,472 performance-based shares/units included in shares granted for the three and nine months ended September 30, 2021. (2) There were zero and 77,327 performance-based shares/units included in vested shares for the three and nine months ended September 30, 2021. (3) The number of forfeited shares includes aggregate performance-based shares/units of 8,643 and 48,803 for the three and nine months ended September 30, 2021. Stock Options We also issued stock options to certain employees, officers, and directors. Stock options are issued at the closing market price immediately before the grant date and generally have a three five seven ten The following table represents stock option activity for the three months ended September 30, 2021: Three Months Ended September 30, 2021 ($ in thousands except per share data) Number of Shares Weighted-Average Exercise Price Per Share Weighted-Average Remaining Contract Term Aggregated Intrinsic Value Outstanding at beginning of period 14,904 $ 13.05 Exercised — $ — Outstanding at end of period 14,904 $ 13.05 3.5 years $ 81 Exercisable at end of period 14,904 $ 13.05 3.5 years $ 81 The following table represents stock option activity for the nine months ended September 30, 2021: Nine Months Ended September 30, 2021 ($ in thousands except per share data) Number of Shares Weighted-Average Exercise Price Per Share Weighted-Average Remaining Contract Term Aggregated Intrinsic Value Outstanding at beginning of period 55,069 $ 13.96 Exercised (40,165) $ 14.30 Outstanding at end of period 14,904 $ 13.05 3.5 years $ 81 Exercisable at end of period 14,904 $ 13.05 3.5 years $ 81 There were no unvested stock options as of September 30, 2021 and December 31, 2020. Stock Appreciation Rights On August 21, 2012, we granted to the then, and now former, chief executive officer, ten Income Taxes ). There are no further outstanding SARs. The following table represents SARs activity and the weighted average exercise price per share as of and for the three and nine months ended September 30, 2021: Three Months Ended Nine Months Ended ($ in thousands except per share data) Number of Shares Weighted-Average Exercise Price Per Share Number of Shares Weighted-Average Exercise Price Per Share Outstanding at beginning of period — $ — 1,559,012 $ 11.60 Exercised — $ — (1,559,012) $ 11.60 Outstanding at end of period — $ — — $ — Exercisable at end of period — $ — — $ —

STOCKHOLDERS' EQUITY

STOCKHOLDERS' EQUITY	9 Months Ended
	Sep. 30, 2021
Equity [Abstract]
STOCKHOLDERS' EQUITY	STOCKHOLDERS’ EQUITY Preferred Stock We are authorized to issue 50,000,000 shares of preferred stock with par value of $0.01 per share. Preferred shares outstanding rank senior to common shares both as to dividends and liquidation preference but generally have no voting rights. All of our outstanding shares of preferred stock have a $1,000 per share liquidation preference. The following table presents our total outstanding preferred stock as of the dates indicated: September 30, 2021 December 31, 2020 ($ in thousands) Shares Outstanding Liquidation Preference Carrying Value Shares Outstanding Liquidation Preference Carrying Value Series D 7.375% non-cumulative perpetual — $ — $ — 93,270 $ 93,270 $ 89,922 Series E non-cumulative perpetual 98,702 98,702 94,956 98,702 98,702 94,956 Total 98,702 $ 98,702 $ 94,956 191,972 $ 191,972 $ 184,878 During certain periods, we have repurchased Series D Depositary Shares and Series E Depositary Shares, each representing a 1/40th interest in a share of Series D Preferred Stock and Series E Preferred Stock. When the consideration paid to repurchase shares exceeds the repurchased shares' carrying value, the difference reduces net income allocated to common shareholders. When the consideration paid to repurchase shares is less than the repurchased shares' carrying value, the difference increases net income allocated to common shareholders. The following table summarizes repurchases of these depositary shares for the periods indicated: Three Months Ended Nine Months Ended ($ in thousands) 2021 2020 2021 2020 Series D Preferred Stock: Depositary shares repurchased — 100 3,730,767 134,410 Preferred Stock retired (shares) — 3 93,269 3,360 Consideration paid $ — $ 2 $ 93,269 $ 2,698 Carrying value — 2 89,922 3,240 Impact of preferred stock redemption $ — $ — $ 3,347 $ (541) Series E Preferred Stock: Depositary shares repurchased — 6,502 — 70,967 Preferred Stock retired (shares) — 163 — 1,774 Consideration paid $ — $ 164 $ — $ 1,680 Carrying value — 156 — 1,707 Impact of preferred stock redemption $ — $ 7 $ — $ (27) During the first quarter of 2021, we redeemed all of our outstanding Series D Depositary Shares, resulting in an impact of preferred stock redemption of $3.3 million in the accompanying consolidated statements of operations. Change in Accumulated Other Comprehensive (Loss) Income ("AOCI") Our AOCI includes unrealized gain (loss) on securities available-for-sale. Changes to AOCI are presented net of the tax effect as a component of stockholders' equity. Reclassifications from AOCI occur when a security is sold, called or matures and are recorded on the consolidated statements of operations either as a gain or loss. The following table presents changes to AOCI for the periods indicated: Three Months Ended Nine Months Ended ($ in thousands) 2021 2020 2021 2020 Unrealized gain (loss) on securities available-for-sale Balance at beginning of period $ 14,740 $ (15,565) $ 7,746 $ (11,900) Unrealized gain (loss) arising during the period (5,377) 23,859 4,535 20,677 Reclassification adjustment from other comprehensive income — — — (2,011) Tax effect of current period changes 1,585 (7,028) (1,333) (5,500) Total changes, net of taxes (3,792) 16,831 3,202 13,166 Balance at end of period $ 10,948 $ 1,266 $ 10,948 $ 1,266

VARIABLE INTEREST ENTITIES

VARIABLE INTEREST ENTITIES	9 Months Ended
	Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
VARIABLE INTEREST ENTITIES	VARIABLE INTEREST ENTITIESWe hold ownership interests in alternative energy partnerships and qualified affordable housing partnerships and have a variable interest in a multifamily securitization trust. We evaluate our interests in these entities to determine whether they meet the definition of a variable interest entity ("VIE") and whether we are required to consolidate these entities. A VIE is consolidated by its primary beneficiary, which is the party that has both (i) the power to direct the activities that most significantly impact the economic performance of the VIE and (ii) a variable interest that could potentially be significant to the VIE. To determine whether or not a variable interest we hold could potentially be significant to the VIE, we consider both qualitative and quantitative factors regarding the nature, size, and form of our involvement with the VIE. We have determined that our interests in these entities meet the definition of variable interests. Unconsolidated VIEs Multifamily Securitization During the third quarter of 2019, we transferred $573.5 million of multifamily loans, through a two-step process, to a third-party depositor which placed the multifamily loans into a third-party trust (a VIE) that issued structured pass-through certificates to investors. The transfer of these loans was accounted for as a sale for financial reporting purposes, in accordance with ASC 860. We determined that we are not the primary beneficiary of this VIE as we do not have the power to direct the activities that will have the most significant economic impact on the entity, therefore we did not consolidate the securitization trust. Our continuing involvement in this securitization is limited to customary obligations associated with the securitization of loans, including the obligation to cure, repurchase, or substitute loans in the event of a material breach in representations. Additionally, we have the obligation to guarantee credit losses up to 12% of the aggregate unpaid principal balances at cut-off date of the securitization. This obligation is supported by a $68.8 million letter of credit between the Freddie Mac and the FHLB. The maximum loss exposure that would be absorbed by us in the event that all of the assets in the securitization trust are deemed worthless is $68.8 million, which represents the aforementioned obligation to guarantee credit losses up to 12%. We believe that the loss exposure on the multifamily securitization is reduced by both loan-to-value ratios of the underlying collateral balances and the overcollateralization that exists within the securitization trust. At September 30, 2021, we have a $3.6 million repurchase reserve related to this VIE. Alternative Energy Partnerships We invest in certain alternative energy partnerships (limited liability companies) formed to provide sustainable energy projects that are designed to generate a return primarily through the realization of federal tax credits (energy tax credits). These entities were formed to invest in newly established residential and commercial solar leases and power purchase agreements. As a result of our investments, we have the right to certain investment tax credits and tax depreciation benefits (recognized on the flow through income statement method in accordance with ASC 740), and to a lesser extent, cash flows generated from the installed solar systems leased to individual consumers for a fixed period of time. While our interest in the alternative energy partnerships meets the definition of a VIE in accordance with ASC 810, we have determined that we are not the primary beneficiary because we do not have the power to direct the activities that most significantly impact the economic performance of the entities including operational and credit risk management activities. As we are not the primary beneficiary, we did not consolidate the entities. We use the Hypothetical Liquidation at Book Value ("HLBV") method to account for our investments in energy tax projects as an equity investment under ASC 970-323-25-17. Under the HLBV method, an equity method investor determines its share of an investee's earnings by comparing its claim on the investee's book value at the beginning and end of the period, assuming the investee were to liquidate all assets at their U.S. GAAP amounts and distribute the resulting cash to creditors and investors under their respective priorities. The difference between the calculated liquidation distribution amounts at the beginning and the end of the reporting period, after adjusting for capital contributions and distributions, is our share of the earnings or losses from the equity investment for the period. To account for the tax credits earned on investments in alternative energy partnerships, we use the flow-through income statement method. Under this method, the tax credits are recognized as a reduction to income tax expense and the initial book-tax differences in the basis of the investments are recognized as additional tax expense in the year they are earned. Investments in alternative energy partnerships totaled $25.2 million and $28.0 million at September 30, 2021 and December 31, 2020. The following table presents information regarding activity in our alternative energy partnerships for the periods indicated: Three Months Ended Nine Months Ended ($ in thousands) 2021 2020 2021 2020 Fundings $ — $ — $ — $ 3,631 Cash distribution from investment 657 611 1,765 1,612 Gain (loss) on investments in alternative energy partnerships 1,785 1,430 (1,016) (308) Income tax credits recognized — — — — Tax expense (benefit) recognized from HLBV application 491 185 (280) (111) The following table represents the carrying value of the associated unconsolidated assets and liabilities and the associated maximum loss exposure for alternative energy partnerships as of the dates indicated: ($ in thousands) September 30, December 31, Cash $ 3,109 $ 3,228 Equipment, net of depreciation 234,972 241,015 Other assets 8,715 7,470 Total unconsolidated assets $ 246,796 $ 251,713 Total unconsolidated liabilities $ 6,230 $ 6,357 Maximum loss exposure $ 25,196 $ 27,977 The maximum loss exposure that would be absorbed by us in the event that all of the assets in alternative energy partnerships are deemed worthless is $25.2 million, which is our recorded investment amount at September 30, 2021. We believe that the loss exposure on our investments is reduced considering our return on our investment is provided not only by the cash flows of the underlying client leases and power purchase agreements, but also through the significant tax benefits, including the federal tax credit carryover that resulted from the investments. In addition, our exposure is further limited as the arrangements include a transition manager to support any transition of the solar company sponsor, whose role includes that of the servicer and operation and maintenance provider, in the event the sponsor would be required to be removed from its responsibilities (e.g., bankruptcy, breach of contract, etc.). Qualified Affordable Housing Partnerships We invest in limited partnerships that operate qualified affordable housing projects. The returns on these investments are generated primarily through allocated Federal tax credits and other tax benefits. In addition, these investments contribute to our compliance with the Community Reinvestment Act. These limited partnerships are considered to be VIEs, because either (i) they do not have sufficient equity investment at risk or (ii) the limited partners with equity at risk do not have substantive kick-out rights through voting rights or substantive participating rights over the general partner. As a limited partner, we are not the primary beneficiary because the general partner has the ability to direct the activities of the VIEs that most significantly impact their economic performance. As a result, we do not consolidate these partnerships. The following table presents information regarding balances in our qualified affordable housing partnerships for the periods indicated: ($ in thousands) September 30, December 31, Ending balance (1) $ 40,095 $ 43,209 Aggregate funding commitment 61,278 61,278 Total amount funded 48,718 42,991 Unfunded commitment 12,560 18,287 Maximum loss exposure 40,095 43,209 (1) Included in other assets in the accompanying Consolidated Statements of Financial Condition. The following table presents information regarding activity in our qualified affordable housing partnerships for the periods indicated: Three Months Ended Nine Months Ended ($ in thousands) 2021 2020 2021 2020 Fundings $ 3,563 $ 1,602 $ 5,727 $ 15,473 Proportional amortization recognized 1,051 1,724 3,114 4,019 Income tax credits recognized 1,155 1,007 3,466 3,215

EARNINGS (LOSS) PER COMMON SHAR

EARNINGS (LOSS) PER COMMON SHARE	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
EARNINGS (LOSS) PER COMMON SHARE	EARNINGS (LOSS) PER COMMON SHARE The following table presents computations of basic and diluted earnings (loss) per common share ("EPS") for the three and nine months ended September 30, 2021: Three Months Ended September 30, 2021 Nine Months Ended ($ in thousands except per share data) Common Stock Class B Common Stock Class B Common Stock Net income $ 22,953 $ 217 $ 56,061 $ 534 Less: Income allocated to participating securities — — (158) (2) Less: preferred stock dividends (1,711) (16) (6,533) (62) Less: preferred stock redemption — — (3,315) (32) Net income allocated to common stockholders $ 21,242 $ 201 $ 46,055 $ 438 Weighted average common shares outstanding 50,239,359 477,321 50,096,607 477,321 Dilutive effects of restricted shares/units 188,850 — 242,803 — Dilutive effects of stock options 3,787 — 5,241 — Average shares and dilutive common shares 50,431,996 477,321 50,344,651 477,321 Basic earnings per common share $ 0.42 $ 0.42 $ 0.92 $ 0.92 Diluted earnings per common share $ 0.42 $ 0.42 $ 0.91 $ 0.92 For the three and nine months ended September 30, 2021, there were 206,035 and 194,615 of restricted shares/units and no stock options that were not considered in computing diluted earnings per common share, because they were anti-dilutive. During the first quarter of 2021 all of the Company's outstanding stock appreciation rights (SARs) were exercised resulting in the net issuance of 305,772 shares of voting common stock. Prior to this exercise, the SARs were considered participating securities and income was allocated to the respective holder and not part of income (loss) available to common stockholders. After the exercise of all of the Company's outstanding SARs, there are no longer any participating securities outstanding and the net shares issued in settlement of such SARs are included in the computation of average common shares for both basic and diluted earnings per share. The following table presents computations of basic and diluted EPS for the three and nine months ended September 30, 2020: Three Months Ended September 30, 2020 Nine Months Ended September 30, 2020 ($ in thousands except per share data) Common Stock Class B Common Stock Common Stock Class B Common Stock Net loss $ 15,761 $ 152 $ (9,043) $ (86) Less: income allocated to participating securities (278) (3) — — Less: participating securities dividends (93) (1) (279) (3) Less: preferred stock dividends (3,414) (33) (10,323) (99) Less: preferred stock redemption (7) — 563 5 Net loss allocated to common stockholders $ 11,969 $ 115 $ (19,082) $ (183) Weighted average common shares outstanding 49,631,334 477,321 49,723,791 477,321 Dilutive effects of stock units 82,278 — — — Dilutive effects of stock options — — — — Average shares and dilutive common shares 49,713,612 477,321 49,723,791 477,321 Basic earnings (loss) per common share $ 0.24 $ 0.24 $ (0.38) $ (0.38) Diluted earnings (loss) per common share $ 0.24 $ 0.24 $ (0.38) $ (0.38)

LOAN COMMITMENTS AND OTHER RELA

LOAN COMMITMENTS AND OTHER RELATED ACTIVITIES	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
LOAN COMMITMENTS AND OTHER RELATED ACTIVITIES	LOAN COMMITMENTS AND OTHER RELATED ACTIVITIES Some financial instruments, such as unfunded loan commitments, credit lines, letters of credit, and overdraft protection, are issued to meet customer financing needs. These are agreements to provide credit or to support the credit of others, as long as conditions established in the contract are met prior to their expiration dates. Commitments may expire without being used. Risk of credit loss exists up to the face amount of these instruments. The same credit policies are used to make such commitments as are used for originating loans, including obtaining collateral at exercise of the commitment. The following table presents the contractual amount of financial instruments with off-balance-sheet risk as of the periods indicated: September 30, 2021 December 31, 2020 ($ in thousands) Fixed Rate Variable Rate Fixed Rate Variable Rate Commitments to extend credit $ 28,983 $ 124,427 $ 17,555 $ 38,141 Unused lines of credit 3,043 1,462,873 1,783 1,348,138 Letters of credit 487 7,694 234 8,274 Other Commitments At September 30, 2021, we had unfunded commitments of $12.6 million, $5.6 million, and $2.5 million for qualified affordable housing fund partnerships, Small Business Investment Company ("SBIC") investments, and other investments, respectively.

REVENUE RECOGNITION

REVENUE RECOGNITION	9 Months Ended
	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
REVENUE RECOGNITION	REVENUE RECOGNITION The following table presents noninterest income, segregated by revenue streams, in-scope and out-of-scope of Topic 606 - Revenue From Contracts With Customers , for the periods indicated: Three Months Ended Nine Months Ended ($ in thousands) 2021 2020 2021 2020 Noninterest income In scope of Topic 606 Deposit service fees $ 913 $ 648 $ 2,548 $ 1,607 Debit card fees 451 384 1,333 941 Other 146 49 327 157 Noninterest income (in-scope of Topic 606) 1,510 1,081 4,208 2,705 Noninterest income (out-of-scope of Topic 606) 4,009 2,873 9,862 8,838 Total noninterest income $ 5,519 $ 3,954 $ 14,070 $ 11,543 We do not typically enter into long-term revenue contracts with customers and as of September 30, 2021 and December 31, 2020, we did not have any significant contract balances. As of September 30, 2021, we did not capitalize any contract acquisition costs.

RELATED-PARTY TRANSACTIONS

RELATED-PARTY TRANSACTIONS	9 Months Ended
	Sep. 30, 2021
Related Party Transactions [Abstract]
RELATED-PARTY TRANSACTIONS	RELATED-PARTY TRANSACTIONSCertain of our executive officers and directors, and their related interests, are customers of, or have had transactions with the Bank in the ordinary course of business, including deposits, loans and other financial services related transactions. From time to time, the Bank may make loans to executive officers and directors, and their related interests, in the ordinary course of business and on substantially the same terms and conditions, including interest rates and collateral, as those of comparable transactions with non-insiders prevailing at the time, in accordance with the Bank’s underwriting guidelines, and do not involve more than the normal risk of collectability or present other unfavorable features. As of September 30, 2021, no related party loans were categorized as nonaccrual, past due, restructured or potential problem loans. Transactions with Related Parties The Company and the Bank have engaged in transactions described below with the Company’s current or former directors, executive officers, and beneficial owners of more than 5 percent of the outstanding shares of the Company’s voting common stock and certain persons related to them. As previously disclosed, the Company’s Board of Directors has authorized and directed the Company to provide indemnification, advancement and/or reimbursement for the costs of separate independent counsel retained by any then-current officer or director, in their individual capacity, with respect to matters related to (i) an investigation by the Special Committee of the Company’s Board of Directors, (ii) a formal order of investigation issued by the SEC on January 4, 2017 (since resolved), and (iii) any civil or administrative proceedings against the Company as well as officers and directors currently or previously associated with the Company (collectively, the “Indemnified Matters”). During the three and nine months ended September 30, 2021, indemnification costs were paid by the Company on behalf of certain current directors in connection with the Indemnified Matters, in the aggregate amounts of $244 thousand and $400 thousand. During the three and nine months ended September 30, 2021, indemnification costs were paid on behalf of certain former directors and former executive officers in connection with the Indemnified Matters, in the aggregate amounts of $513 thousand and $1.2 million.

LITIGATION

LITIGATION	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
LITIGATION	LITIGATION From time to time, we are involved as plaintiff or defendant in various legal actions arising in the normal course of business. In accordance with applicable accounting guidance, we establish an accrued liability when those matters present loss contingencies that are both probable and estimable. While the ultimate liability with respect to legal actions cannot be determined at this time, we believe that damages, if any, and other amounts relating to pending matters are not likely to be material to the consolidated financial statements.

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS	9 Months Ended
	Sep. 30, 2021
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS We have evaluated events from the date of the consolidated financial statements on September 30, 2021 through the issuance of these consolidated financial statements included in this Quarterly Report on Form 10-Q. On October 18, 2021, the Company completed the acquisition of Pacific Mercantile Bancorp (“PMBC”), pursuant to which PMBC merged (the “Merger”) with and into the Company, with the Company as the surviving corporation. Under the terms and conditions of the Merger Agreement, each outstanding share of PMBC common stock was converted into the right to receive 0.5 of a share of the Company's common stock. This resulted in the issuance of 11,856,713 shares of BOC common stock with an estimated fair value of $222.2 million based upon the $18.74 closing price of BANC’s common stock on October 18, 2021. In addition, cash consideration totaled $3.2 million for all outstanding PMBC share-based awards, including stock options and outstanding shares subject to unvested restricted stock awards, based upon the volume weighted average common stock price of the Company on each of the last 20 trading days ending on the fifth trading day prior to the closing of the Merger. The aggregate purchase price totaled $225.4 million. At September 30, 2021, PMBC had total gross loans of $982.4 million and total assets of $1.49 billion. Total deposits were $1.29 billion at September 30, 2021. The fair value of intangible assets and acquired assets and liabilities will be determined as of the acquisition date but are still being evaluated as of the date of these consolidated financial statements. As of September 30, 2021, on a pro forma combined

SUMMARY OF SIGNIFICANT ACCOUN_2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation: The accompanying unaudited interim consolidated financial statements have been prepared pursuant to Article 10 of SEC Regulation S-X and other SEC rules and regulations for reporting on the Quarterly Report on Form 10-Q. Accordingly, certain disclosures required by U.S. generally accepted accounting principles (“GAAP”) are not included herein. These interim statements should be read in conjunction with the consolidated financial statements and notes included in the Annual Report on Form 10-K for the year ended December 31, 2020 filed by us with the SEC. The December 31, 2020 consolidated statements of financial condition presented herein have been derived from the audited financial statements included in the Annual Report on Form 10-K for the year ended December 31, 2020 filed with the SEC.
Reclassification	Certain prior period amounts have been reclassified to conform to current period presentation, including i) reclassification of income taxes receivable to other assets in the consolidated statement of financial condition, and ii) reclassification of outside services expense from "outside services fees" to "all other expense" in the consolidated statements of operations.In the opinion of management of the Company, the accompanying unaudited interim consolidated financial statements reflect all of the adjustments (consisting of normal recurring adjustments) necessary for a fair presentation of the consolidated financial condition and consolidated results of operations as of the dates and for the periods presented.
Principles of Consolidation	Principles of Consolidation: The accompanying unaudited consolidated financial statements include the accounts of the Company and its consolidated subsidiaries as of September 30, 2021 and December 31, 2020 and for the three and nine months ended September 30, 2021 and 2020. Significant intercompany accounts and transactions have been eliminated in consolidation. Unless the context requires otherwise, all references to the Company include its then wholly-owned subsidiaries.
Use of Estimates in the Preparation of Financial Statements	Use of Estimates in the Preparation of Financial Statements: The preparation of financial statements, in conformity with GAAP, requires management to make estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the consolidated financial statements and disclosures provided, and actual results could differ. The allowance for credit losses (“ACL”) (which includes the allowance for loan losses (“ALL”) and the reserve for unfunded loan commitments), provision for credit losses, loan repurchase reserve, realization of deferred tax assets, valuation of goodwill and other intangible assets, valuation of investments in alternative energy partnerships, and the fair value measurement of financial instruments are particularly subject to change and such change could have a material effect on the consolidated financial statements.
Adopted Accounting Pronouncements, Significant Accounting Policies, and Recent Accounting Guidance	Adopted Accounting Pronouncements: On January 1, 2021, we adopted Accounting Standards Update (“ASU”) 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (“ASU 2019-12”) which simplifies the accounting for income taxes by removing certain exceptions for investments, intra-period allocations, and interim calculations, and adding guidance to reduce the complexity of applying Topic 740. The adoption of these amendments did not have a material effect on our consolidated financial statements. Significant Accounting Policies: The accounting and reporting policies of the Company are based upon GAAP and conform to predominant practices within the banking industry. We have not made any significant changes in our critical accounting policies from those disclosed in our Annual Report on Form 10-K for the year ended December 31, 2020 filed with the SEC. Recent Accounting Guidance: In August 2021, the FASB issued ASU 2021-06, Presentation of Financial Statements (Topic 205), Financial Services—Depository and Lending (Topic 942), and Financial Services— Investment Companies (Topic 946), Amendments to SEC Paragraphs Pursuant to SEC Final Rule Releases No. 33-10786, Amendments to Financial Disclosures about Acquired and Disposed Businesses, and No. 33-10835, Update of Statistical Disclosures for Bank and Savings and Loan Registrants("ASU 2021-06") . This ASU incorporates recent SEC rule changes into the FASB Codification, including SEC Final Rule Releases No. 33-10786, Amendments to Financial Disclosures about Acquired and Disposed Businesses , and No. 33-10835, Update of Statistical Disclosures for Bank and Savings and Loan Registrants Disclosures for Bank and Savings and Loan Registrants . The amendments in this update are effective upon addition to the FASB Codification and are not expected to have a material impact on the consolidated financial statements. Beginning in June 2023, the London Interbank Offered Rate (“LIBOR”) will be discontinued. To assist entities with the transition away from LIBOR, the Financial Accounting Standards Board (“FASB”) has issued accounting guidance to clarify GAAP and provide practical expedients for entities to utilize during the time of transition. We are in the process of evaluating the potential impact the discontinuation of LIBOR will have on our consolidated financial statements. The optional expedients and exceptions provided through this relief are set forth below and were effective immediately; however, certain provisions from this relief are not yet determined due to the fact that LIBOR has not yet been discontinued. In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848) , ("ASU 2020-04") which provided optional guidance, for a limited period of time, to ease the potential burden in accounting for (or recognizing the benefits of) reference rate reform on financial reporting. The amendments in ASU 2020-04 were elective and applied to all entities, subject to meeting certain criteria, that have contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. ASU 2020-04 provided optional expedients and exceptions for applying GAAP to contract modifications and hedging relationships, subject to meeting certain criteria. When elected, the optional expedients for contract modifications must be applied consistently for all eligible contracts or eligible transactions within the relevant topic or industry subtopic within the codification that contains the guidance that otherwise would be required to be applied. The amendments in ASU 2020-04 were effective for all entities as of March 12, 2020 through December 31, 2022. In January 2021, the FASB issued ASU 2021-01, Reference Rate Reform (Topic 848) ("ASU 2021-01"). The amendments in ASU 2021-01 clarified 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. Specifically, certain provisions in Topic 848, if elected by an entity, apply to derivative instruments that use an interest rate for margining, discounting, or contract price alignment that is modified as a result of reference rate reform. Amendments in this Update to the expedients and exceptions in Topic 848 capture the incremental consequences of the scope clarification and tailor the existing guidance to derivative instruments affected by the discounting transition. The amendments in ASU 2021-01 are elective and apply to all entities that have derivative instruments that use an interest rate for margining, discounting, or contract price alignment that is modified as a result of reference rate reform. The amendments also optionally apply to all entities that designate receive-variable-rate, pay-variable-rate cross-currency interest rate swaps as hedging instruments in net investment hedges that are modified as a result of reference rate reform. The amendments in ASU 2021-01 were effective immediately for all entities. ASU 2021-01 is not expected to have a material effect on our consolidated financial statements.
Sale Leaseback Transactions, Policy	Sale-leaseback Transaction: In September 2021, the Company completed a sale-leaseback transaction for one of its branch locations. The Company sold the branch for $4.2 million and recognized a gain of $841 thousand. The Company also entered into a 5-year lease agreement for this branch and recognized a right-of-use asset and lease liability for $811 thousand.

FAIR VALUES OF FINANCIAL INST_2

FAIR VALUES OF FINANCIAL INSTRUMENTS (Tables)	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value Assets Measured on a Recurring Basis	The following table presents our financial assets and liabilities measured at fair value on a recurring basis as of the dates indicated: Fair Value Measurement Level ($ in thousands) Carrying Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs September 30, 2021 Assets Securities available-for-sale: SBA loan pools securities $ 15,421 $ — $ 15,421 $ — U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities 193,286 — 193,286 — U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations 255,305 — 255,305 — Municipal securities 120,417 — 120,417 — Non-agency residential mortgage-backed securities 154 — 154 — Collateralized loan obligations 549,277 — 549,277 — Corporate debt securities 169,508 — 169,508 — Loans held-for-sale, carried at fair value 3,422 — 2,427 995 Derivative assets: Interest rate swaps (1) 4,495 — 4,495 — Foreign exchange contracts (1) 173 — 173 — Liabilities Derivative liabilities: Interest rate swaps (2) 4,739 — 4,739 — Foreign exchange contracts (2) 159 — 159 — December 31, 2020 Assets Securities available-for-sale: SBA loan pools securities $ 17,354 $ — $ 17,354 $ — U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities 106,384 — 106,384 — U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations 211,831 — 211,831 — Municipal securities 68,623 — 68,623 — Non-agency residential mortgage-backed securities 160 — 160 — Collateralized loan obligations 677,785 — 677,785 — Corporate debt securities 149,294 — 149,294 — Loans held-for-sale, carried at fair value 1,413 — 468 945 Derivative assets: Interest rate swaps (1) 7,304 — 7,304 — Foreign exchange contracts (1) 328 — 328 — Liabilities Derivative liabilities: Interest rate swaps (2) 7,789 — 7,789 — Foreign exchange contracts (2) 313 — 313 — (1) Included in other assets in the Consolidated Statements of Financial Condition. (2) Included in accrued expenses and other liabilities in the Consolidated Statements of Financial Condition.
Fair Value Liabilities Measured on a Recurring Basis	The following table presents our financial assets and liabilities measured at fair value on a recurring basis as of the dates indicated: Fair Value Measurement Level ($ in thousands) Carrying Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs September 30, 2021 Assets Securities available-for-sale: SBA loan pools securities $ 15,421 $ — $ 15,421 $ — U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities 193,286 — 193,286 — U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations 255,305 — 255,305 — Municipal securities 120,417 — 120,417 — Non-agency residential mortgage-backed securities 154 — 154 — Collateralized loan obligations 549,277 — 549,277 — Corporate debt securities 169,508 — 169,508 — Loans held-for-sale, carried at fair value 3,422 — 2,427 995 Derivative assets: Interest rate swaps (1) 4,495 — 4,495 — Foreign exchange contracts (1) 173 — 173 — Liabilities Derivative liabilities: Interest rate swaps (2) 4,739 — 4,739 — Foreign exchange contracts (2) 159 — 159 — December 31, 2020 Assets Securities available-for-sale: SBA loan pools securities $ 17,354 $ — $ 17,354 $ — U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities 106,384 — 106,384 — U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations 211,831 — 211,831 — Municipal securities 68,623 — 68,623 — Non-agency residential mortgage-backed securities 160 — 160 — Collateralized loan obligations 677,785 — 677,785 — Corporate debt securities 149,294 — 149,294 — Loans held-for-sale, carried at fair value 1,413 — 468 945 Derivative assets: Interest rate swaps (1) 7,304 — 7,304 — Foreign exchange contracts (1) 328 — 328 — Liabilities Derivative liabilities: Interest rate swaps (2) 7,789 — 7,789 — Foreign exchange contracts (2) 313 — 313 — (1) Included in other assets in the Consolidated Statements of Financial Condition. (2) Included in accrued expenses and other liabilities in the Consolidated Statements of Financial Condition.
Reconciliation of Assets Measured at Fair Value on Recurring Basis	The following table presents a reconciliation of assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the periods indicated: Three Months Ended Nine Months Ended ($ in thousands) 2021 2020 2021 2020 Loans repurchased from GNMA Loan Pools Balance at beginning of period $ 941 $ 16,685 $ 945 $ 19,233 Total gains (losses) (realized/unrealized): Included in earnings—fair value adjustment 57 18 57 (1,351) Sales, settlements, and other (3) (15,320) (7) (16,499) Balance at end of period $ 995 $ 1,383 $ 995 $ 1,383
Fair Value Option of Certain Assets	The following table presents the fair value and aggregate principal balance of certain assets under the fair value option: September 30, 2021 December 31, 2020 ($ in thousands) Fair Value Unpaid Principal Balance Difference Fair Value Unpaid Principal Balance Difference Loans held-for-sale, carried at fair value: Total loans $ 3,422 $ 3,677 $ (255) $ 1,413 $ 1,680 $ (267) Nonaccrual loans (1) 698 747 (49) 654 750 (96) (1) Includes loans guaranteed by the U.S. government of $189 thousand and $190 thousand at September 30, 2021 and December 31, 2020. Three Months Ended Nine Months Ended ($ in thousands) 2021 2020 2021 2020 Net gains (losses) from fair value changes: Fair value adjustment for loans held-for-sale $ 160 $ 24 $ 180 $ (1,537)
Schedule of Assets and Liabilities Measured on Non-recurring Basis	The following table presents our financial assets and liabilities measured at fair value on a non-recurring basis as of the dates indicated: Fair Value Measurement Level ($ in thousands) Carrying Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs September 30, 2021 Assets Collateral dependent loans: Single family residential mortgage $ 2,319 $ — $ — $ 2,319 SBA 3,925 — — 3,925 December 31, 2020 Assets Collateral dependent loans: SBA $ 629 $ — $ — $ 629
Schedule of Gains and (Losses) Recognized on Assets Measured at Fair Value on Non-recurring Basis	The following table presents the gains (losses) recognized on assets measured at fair value on a non-recurring basis for the periods indicated: Three Months Ended Nine Months Ended ($ in thousands) 2021 2020 2021 2020 Collateral dependent loans: Single family residential mortgage $ — $ (191) $ (211) $ (169) Commercial and industrial — (2,285) 38 (9,707) SBA (1,377) (533) (1,886) (1,722) Commercial real estate 2 — (138) —
Carrying Amounts and Estimated Fair Values of Financial Instruments	Estimated Fair Values of Financial Instruments The following table presents the carrying amounts and estimated fair values of financial assets and liabilities as of the dates indicated: Carrying Amount Fair Value Measurement Level ($ in thousands) Level 1 Level 2 Level 3 Total September 30, 2021 Financial assets Cash and cash equivalents $ 185,840 $ 185,840 $ — $ — $ 185,840 Securities available-for-sale 1,303,368 — 1,303,368 — 1,303,368 Federal Home Loan Bank and other bank stock 44,604 — 44,604 — 44,604 Loans held-for-sale, carried at fair value 3,422 — 2,427 995 3,422 Loans receivable, net of allowance for credit losses 6,155,051 — — 6,235,625 6,235,625 Accrued interest receivable 30,546 30,546 — — 30,546 Derivative assets 4,668 — 4,668 — 4,668 Financial liabilities Deposits 6,543,225 — — 6,543,653 6,543,653 Advances from Federal Home Loan Bank 405,738 — 437,111 — 437,111 Other borrowings 100,000 — 100,000 — 100,000 Long-term debt 256,706 — 274,493 — 274,493 Derivative liabilities 4,898 — 4,898 — 4,898 Accrued interest payable 6,645 6,645 — — 6,645 December 31, 2020 Financial assets Cash and cash equivalents $ 220,819 $ 220,819 $ — $ — $ 220,819 Securities available-for-sale 1,231,431 — 1,231,431 — 1,231,431 Federal Home Loan Bank and other bank stock 44,506 — 44,506 — 44,506 Loans held-for-sale 1,413 — 468 945 1,413 Loans receivable, net of allowance for credit losses 5,817,375 — — 5,936,708 5,936,708 Accrued interest receivable 29,445 29,445 — — 29,445 Derivative assets 7,632 — 7,632 — 7,632 Financial liabilities Deposits 6,085,800 — — 6,087,714 6,087,714 Advances from Federal Home Loan Bank 539,795 — 585,416 — 585,416 Long-term debt 256,315 — 273,230 — 273,230 Derivative liabilities 8,102 — 8,102 — 8,102 Accrued interest payable 3,714 3,714 — — 3,714

INVESTMENT SECURITIES (Tables)

INVESTMENT SECURITIES (Tables)	9 Months Ended
	Sep. 30, 2021
Investments, Debt and Equity Securities [Abstract]
Summary of Amortized Cost and Fair Value of Available-for-Sale Investment Securities	The following table presents the amortized cost and fair value of the investment securities portfolio as of the dates indicated: ($ in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value September 30, 2021 Securities available-for-sale: SBA loan pool securities $ 15,489 $ — $ (68) $ 15,421 U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities 190,708 3,556 (978) 193,286 U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations 254,775 2,062 (1,532) 255,305 Municipal securities 117,955 3,167 (705) 120,417 Non-agency residential mortgage-backed securities 149 5 — 154 Collateralized loan obligations 551,775 — (2,498) 549,277 Corporate debt securities 156,995 12,513 — 169,508 Total securities available-for-sale $ 1,287,846 $ 21,303 $ (5,781) $ 1,303,368 December 31, 2020 Securities available-for-sale: SBA loan pool securities $ 17,436 $ — $ (82) $ 17,354 U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities 99,591 6,793 — 106,384 U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations 209,426 2,571 (166) 211,831 Municipal securities 64,355 4,272 (4) 68,623 Non-agency residential mortgage-backed securities 156 4 — 160 Collateralized loan obligations 687,505 — (9,720) 677,785 Corporate debt securities 141,975 7,319 — 149,294 Total securities available-for-sale $ 1,220,444 $ 20,959 $ (9,972) $ 1,231,431
Proceeds From Sales and Calls of Securities and Associated Gross Gains and Losses	The following table presents proceeds from sales and calls of securities available-for-sale and the associated gross gains and losses realized through earnings upon the sales and calls of securities available-for-sale for the periods indicated: Three Months Ended Nine Months Ended ($ in thousands) 2021 2020 2021 2020 Gross realized gains $ — $ — $ — $ 2,011 Gross realized losses — — — — Net realized gains on sales and calls $ — $ — $ — $ 2,011 Proceeds from sales and calls (1) $ 20,000 $ — $ 120,230 $ 52,727 (1) Includes proceeds from CLO resets
Summary of Investment Securities With Unrealized Losses	The following table summarizes the investment securities with unrealized losses by security type and length of time in a continuous, unrealized loss position as of the dates indicated: Less Than 12 Months 12 Months or Longer Total ($ in thousands) Fair Gross Unrealized Losses Fair Gross Unrealized Losses Fair Gross Unrealized Losses September 30, 2021 Securities available-for-sale: SBA loan pool securities $ 3,476 $ (6) $ 11,945 $ (62) $ 15,421 $ (68) U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities 54,501 (978) — — 54,501 (978) U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations 77,262 (1,048) 9,686 (484) 86,948 (1,532) Municipal securities 43,346 (261) 10,945 (444) 54,291 (705) Collateralized loan obligations 66,956 (44) 258,320 (2,454) 325,276 (2,498) Total securities available-for-sale $ 245,541 $ (2,337) $ 290,896 $ (3,444) $ 536,437 $ (5,781) December 31, 2020 SBA loan pool securities $ 17,354 $ (82) $ — $ — $ 17,354 $ (82) U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations 19,033 (166) — — 19,033 (166) Municipal securities 11,401 (4) — — 11,401 (4) Collateralized loan obligations 64,775 (225) 613,010 (9,495) 677,785 (9,720) Total securities available-for-sale $ 112,563 $ (477) $ 613,010 $ (9,495) $ 725,573 $ (9,972)
Composition, Repricing and Yield Information of Investment Securities Portfolio	The following table presents the fair value and yield information of the investment securities portfolio, based on the earlier of maturity dates or next repricing date, as of September 30, 2021: One year or less More than One Year through Five Years More than Five Years through Ten Years More than Ten Years Total ($ in thousands) Fair Weighted-Average Yield Fair Weighted-Average Yield Fair Weighted-Average Yield Fair Weighted-Average Yield Fair Weighted-Average Yield Securities available-for-sale: SBA loan pool securities $ 15,421 0.93 % $ — — % $ — — % $ — — % $ 15,421 0.93 % U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities — — % — — % 29,294 2.20 % 163,992 2.16 % 193,286 2.17 % U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations 105,662 0.63 % 10,978 1.97 % 42,423 1.34 % 96,242 1.75 % 255,305 1.23 % Municipal securities — — % — — % 15,425 2.62 % 104,992 2.37 % 120,417 2.40 % Non-agency residential mortgage-backed securities — — % — — % — — % 154 6.36 % 154 6.36 % Collateralized loan obligations 549,277 1.76 % — — % — — % — — % 549,277 1.76 % Corporate debt securities — — % 151,201 4.82 % 18,307 5.73 % — — % 169,508 4.91 % Total securities available-for-sale $ 670,360 1.56 % $ 162,179 4.62 % $ 105,449 2.42 % $ 365,380 2.11 % $ 1,303,368 2.15 %

LOANS AND ALLOWANCE FOR CREDI_2

LOANS AND ALLOWANCE FOR CREDIT LOSSES (Tables)	9 Months Ended
	Sep. 30, 2021
Receivables [Abstract]
Loans and Leases Receivable	The following table presents the balances in our loan portfolio as of the dates indicated: ($ in thousands) September 30, December 31, Commercial: Commercial and industrial (1) $ 2,296,626 $ 2,088,308 Commercial real estate 907,224 807,195 Multifamily 1,295,613 1,289,820 SBA (2) 181,582 273,444 Construction 130,536 176,016 Consumer: Single family residential mortgage 1,393,696 1,230,236 Other consumer 23,298 33,386 Total loans (3) $ 6,228,575 $ 5,898,405 Allowance for loan losses (73,524) (81,030) Loans receivable, net $ 6,155,051 $ 5,817,375 (1) Includes warehouse lending balances of $1.52 billion and $1.34 billion at September 30, 2021 and December 31, 2020. (2) Includes 566 PPP loans totaling $116.5 million, net of unamortized loan fees totaling $2.0 million at September 30, 2021 and 949 PPP loans totaling $210.0 million, net of unamortized loan fees totaling $1.6 million at December 31, 2020. (3) Includes net deferred loan origination costs (fees) and premiums (discounts) of $12.5 million and $6.2 million at September 30, 2021 and December 31, 2020.
Risk Categories for Loans and Leases	The following table presents the risk categories for total loans by class of loans and origination year as of September 30, 2021: Term Loans Amortized Cost Basis by Origination Year ($ in thousands) 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Revolving Loans Amortized Cost Basis Total September 30, 2021 Commercial: Commercial and industrial Pass $ 146,752 $ 70,137 $ 64,881 $ 61,184 $ 45,261 $ 99,395 $ 1,712,167 $ 10,548 $ 2,210,325 Special mention — 3,242 13,803 3,617 11,976 8,690 14,498 7,135 62,961 Substandard — — 3,076 4,969 — 9,641 3,194 2,460 23,340 Doubtful — — — — — — — — — Commercial and industrial 146,752 73,379 81,760 69,770 57,237 117,726 1,729,859 20,143 2,296,626 Commercial real estate Pass 255,677 57,232 132,886 161,355 54,060 213,050 2,108 73 876,441 Special mention — — — 1,934 — 10,999 3,762 — 16,695 Substandard — — 508 — — 13,580 — — 14,088 Doubtful — — — — — — — — — Commercial real estate 255,677 57,232 133,394 163,289 54,060 237,629 5,870 73 907,224 Multifamily Pass 280,570 209,591 295,012 218,476 78,659 148,610 107 — 1,231,025 Special mention — 2,004 15,397 11,308 — 33,949 — — 62,658 Substandard — — — — — 1,930 — — 1,930 Doubtful — — — — — — — — — Multifamily 280,570 211,595 310,409 229,784 78,659 184,489 107 — 1,295,613 SBA Pass 101,405 30,143 7,555 249 3,508 19,750 358 303 163,271 Special mention — — 1,731 900 — 1,181 255 4 4,071 Substandard — — — 390 3,631 7,017 247 918 12,203 Doubtful — — — — — 1,777 — 260 2,037 SBA 101,405 30,143 9,286 1,539 7,139 29,725 860 1,485 181,582 Construction Pass 24,867 30,494 19,184 16,694 29,622 — — — 120,861 Special mention — — — 1,537 — 8,138 — — 9,675 Substandard — — — — — — — — — Doubtful — — — — — — — — — Construction 24,867 30,494 19,184 18,231 29,622 8,138 — — 130,536 Consumer: Single family residential mortgage Pass 550,466 125,669 79,395 162,821 103,351 328,357 12,557 — 1,362,616 Special mention — — — 1,255 696 6,831 — — 8,782 Substandard — — — 6,403 1,707 13,949 239 — 22,298 Doubtful — — — — — — — — — Single family residential mortgage 550,466 125,669 79,395 170,479 105,754 349,137 12,796 — 1,393,696 Other consumer Pass 1,110 — — 8 — 1,753 18,022 2,221 23,114 Special mention — — — — — 27 60 — 87 Substandard — — — — — — 97 — 97 Doubtful — — — — — — — — — Other consumer 1,110 — — 8 — 1,780 18,179 2,221 23,298 Total loans $ 1,360,847 $ 528,512 $ 633,428 $ 653,100 $ 332,471 $ 928,624 $ 1,767,671 $ 23,922 $ 6,228,575 Total loans Pass $ 1,360,847 $ 523,266 $ 598,913 $ 620,787 $ 314,461 $ 810,915 $ 1,745,319 $ 13,145 $ 5,987,653 Special mention — 5,246 30,931 20,551 12,672 69,815 18,575 7,139 164,929 Substandard — — 3,584 11,762 5,338 46,117 3,777 3,378 73,956 Doubtful — — — — — 1,777 — 260 2,037 Total loans $ 1,360,847 $ 528,512 $ 633,428 $ 653,100 $ 332,471 $ 928,624 $ 1,767,671 $ 23,922 $ 6,228,575 The following table presents the risk categories for total loans by class of loans and origination year as of December 31, 2020: Term Loans Amortized Cost Basis by Origination Year ($ in thousands) 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Revolving Loans Amortized Cost Basis Total December 31, 2020 Commercial: Commercial and industrial Pass $ 99,015 $ 78,783 $ 70,248 $ 52,786 $ 44,536 $ 92,129 $ 1,572,259 $ 9,945 $ 2,019,701 Special mention — 928 2,748 7,986 1,574 2,271 1,500 225 17,232 Substandard — 13,937 6,262 4,618 — 9,264 12,598 4,696 51,375 Doubtful — — — — — — — — — Commercial and industrial 99,015 93,648 79,258 65,390 46,110 103,664 1,586,357 14,866 2,088,308 Commercial real estate Pass 75,432 150,731 192,831 63,144 91,454 182,756 2,682 1,582 760,612 Special mention — — 9,452 — 2,518 14,754 3,761 — 30,485 Substandard — — — — — 16,098 — — 16,098 Doubtful — — — — — — — — — Commercial real estate 75,432 150,731 202,283 63,144 93,972 213,608 6,443 1,582 807,195 Multifamily Pass 239,449 407,532 275,881 110,105 97,160 154,841 27 — 1,284,995 Special mention — 2,050 — — — 803 — — 2,853 Substandard — — — — — 1,972 — — 1,972 Doubtful — — — — — — — — — Multifamily 239,449 409,582 275,881 110,105 97,160 157,616 27 — 1,289,820 SBA Pass 211,962 14,082 1,260 3,746 11,087 18,589 3,111 1,014 264,851 Special mention — 1,768 — 212 415 874 — 6 3,275 Substandard — — — 1,319 682 1,855 226 755 4,837 Doubtful — — 390 — — — — 91 481 SBA 211,962 15,850 1,650 5,277 12,184 21,318 3,337 1,866 273,444 Construction Pass 41,677 30,387 45,397 50,024 — — — — 167,485 Special mention — — 1,537 — 6,994 — — — 8,531 Substandard — — — — — — — — — Doubtful — — — — — — — — — Construction 41,677 30,387 46,934 50,024 6,994 — — — 176,016 Consumer: Single family residential mortgage Pass 149,382 140,129 271,667 161,332 237,285 227,711 15,252 — 1,202,758 Special mention — — 1,837 688 4,868 4,460 — — 11,853 Substandard — 157 491 1,079 4,978 8,920 — — 15,625 Doubtful — — — — — — — — — Single family residential mortgage 149,382 140,286 273,995 163,099 247,131 241,091 15,252 — 1,230,236 Other consumer Pass 38 — 47 — — 1,876 27,644 2,218 31,823 Special mention — — — — — 30 1,185 — 1,215 Substandard — — — — — — 274 74 348 Doubtful — — — — — — — — — Other consumer 38 — 47 — — 1,906 29,103 2,292 33,386 Total loans $ 816,955 $ 840,484 $ 880,048 $ 457,039 $ 503,551 $ 739,203 $ 1,640,519 $ 20,606 $ 5,898,405 Total loans Pass $ 816,955 $ 821,644 $ 857,331 $ 441,137 $ 481,522 $ 677,902 $ 1,620,975 $ 14,759 $ 5,732,225 Special mention — 4,746 15,574 8,886 16,369 23,192 6,446 231 75,444 Substandard — 14,094 6,753 7,016 5,660 38,109 13,098 5,525 90,255 Doubtful — — 390 — — — — 91 481 Total loans $ 816,955 $ 840,484 $ 880,048 $ 457,039 $ 503,551 $ 739,203 $ 1,640,519 $ 20,606 $ 5,898,405
Aging of Recorded Investment in Past Due Loans and Leases	The following table presents the aging of the recorded investment in past due loans, excluding accrued interest receivable (which is not considered to be material), by class of loans as of the dates indicated: ($ in thousands) 30 - 59 Days Past Due 60 - 89 Days Past Due Greater than 89 Days Past due Total Past Due Current Total September 30, 2021 Non-Traditional Mortgage (NTM) loans: Single family residential mortgage $ 7,098 $ — $ 2,407 $ 9,505 $ 560,276 $ 569,781 Other consumer — — — — 1,597 1,597 Total NTM loans 7,098 — 2,407 9,505 561,873 571,378 Traditional loans: Commercial: Commercial and industrial 3,624 3,796 2,876 10,296 2,286,330 2,296,626 Commercial real estate — — — — 907,224 907,224 Multifamily 791 — — 791 1,294,822 1,295,613 SBA 2,545 — 12,385 14,930 166,652 181,582 Construction — — — — 130,536 130,536 Consumer: Single family residential mortgage 4,274 1,016 4,311 9,601 814,314 823,915 Other consumer — — — — 21,701 21,701 Total traditional loans 11,234 4,812 19,572 35,618 5,621,579 5,657,197 Total $ 18,332 $ 4,812 $ 21,979 $ 45,123 $ 6,183,452 $ 6,228,575 December 31, 2020 NTM loans: Single family residential mortgage $ 4,200 $ 641 $ 6,548 $ 11,389 $ 424,126 $ 435,515 Other consumer — — — — 1,598 1,598 Total NTM loans 4,200 641 6,548 11,389 425,724 437,113 Traditional loans: Commercial: Commercial and industrial 67 — 4,284 4,351 2,083,957 2,088,308 Commercial real estate — — — — 807,195 807,195 Multifamily — — — — 1,289,820 1,289,820 SBA 354 626 3,062 4,042 269,402 273,444 Construction — — — — 176,016 176,016 Consumer: Single family residential mortgage 6,836 980 3,742 11,558 783,163 794,721 Other consumer 216 61 — 277 31,511 31,788 Total traditional loans 7,473 1,667 11,088 20,228 5,441,064 5,461,292 Total $ 11,673 $ 2,308 $ 17,636 $ 31,617 $ 5,866,788 $ 5,898,405
Composition of Nonaccrual Loans and Leases	The following table presents nonaccrual loans as of the dates indicated: September 30, 2021 December 31, 2020 ($ in thousands) NTM Loans Traditional Loans Total Nonaccrual Loans with no ACL NTM Loans Traditional Loans Total Nonaccrual Loans with no ACL Nonaccrual loans Commercial: Commercial and industrial $ — $ 11,834 $ 11,834 $ 11,834 $ — $ 13,821 $ 13,821 $ 13,088 Commercial real estate — 4,419 4,419 4,419 — 4,654 4,654 4,654 SBA — 12,824 12,824 5,204 — 3,749 3,749 648 Consumer: Single family residential mortgage 6,644 9,900 16,544 14,015 8,697 4,822 13,519 13,519 Other consumer — — — — — 157 157 157 Total nonaccrual loans $ 6,644 $ 38,977 $ 45,621 $ 35,472 $ 8,697 $ 27,203 $ 35,900 $ 32,066
Allowance for Loan and Lease Losses and Recorded Investment, Excluding Accrued Interest, in Loans	The following table presents a summary of activity in the ACL for the periods indicated: Three Months Ended September 30, ($ in thousands) 2021 2020 Allowance Reserve for Unfunded Loan Commitments Allowance Allowance Reserve for Unfunded Loan Commitments Allowance Balance at beginning of period $ 75,885 $ 3,814 $ 79,699 $ 90,370 $ 4,195 $ 94,565 Loans charged off (327) — (327) (1,821) — (1,821) Recoveries of loans previously charged off 532 — 532 248 — 248 Net recoveries (charge-offs) 205 — 205 (1,573) — (1,573) (Reversal of) provision for credit losses (2,566) 1,419 (1,147) 2,130 (989) 1,141 Balance at end of period $ 73,524 $ 5,233 $ 78,757 $ 90,927 $ 3,206 $ 94,133 Nine Months Ended September 30, ($ in thousands) 2021 2020 Allowance Reserve for Unfunded Loan Commitments Allowance Allowance Reserve for Unfunded Loan Commitments Allowance Balance at beginning of period $ 81,030 $ 3,183 $ 84,213 $ 57,649 $ 4,064 $ 61,713 Impact of adopting ASU 2016-13 — — — 7,609 (1,226) 6,383 Loans charged off (1,778) — (1,778) (3,897) — (3,897) Recoveries of loans previously charged off 730 — 730 1,206 — 1,206 Net charge-offs (1,048) — (1,048) (2,691) — (2,691) (Reversal of) provision for credit losses (6,458) 2,050 (4,408) 28,360 368 28,728 Balance at end of period $ 73,524 $ 5,233 $ 78,757 $ 90,927 $ 3,206 $ 94,133 The following table presents the activity and balance in the ALL and the recorded investment, excluding accrued interest, in loans as of or for the three and nine months ended September 30, 2021: ($ in thousands) Commercial and Industrial Commercial Real Estate Multifamily SBA Construction Single Family Residential Mortgage Other Consumer Total ALL: Three Months Ended September 30, 2021: Balance at June 30, 2021 $ 20,156 $ 16,424 $ 21,403 $ 3,696 $ 4,734 $ 9,108 $ 364 $ 75,885 Charge-offs (115) (138) — (74) — — — (327) Recoveries 484 — — 1 — 46 1 532 Net recoveries (charge-offs) 369 (138) — (73) — 46 1 205 (Reversal of) provision for credit losses - loans (270) (269) (2,678) 1,112 (616) 150 5 (2,566) Balance at September 30, 2021 $ 20,255 $ 16,017 $ 18,725 $ 4,735 $ 4,118 $ 9,304 $ 370 $ 73,524 Nine Months Ended September 30, 2021: Balance at December 31, 2020 $ 20,608 $ 19,074 $ 22,512 $ 3,145 $ 5,849 $ 9,191 $ 651 $ 81,030 Charge-offs (1,180) (138) — (460) — — — (1,778) Recoveries 553 — — 130 — 46 1 730 Net (charge-offs) recoveries (627) (138) — (330) — 46 1 (1,048) Provision for (reversal of) credit losses - loans 274 (2,919) (3,787) 1,920 (1,731) 67 (282) (6,458) Balance at September 30, 2021 $ 20,255 $ 16,017 $ 18,725 $ 4,735 $ 4,118 $ 9,304 $ 370 $ 73,524 The following table presents the activity and balance in the ALL and the recorded investment, excluding accrued interest, in loans as of or for the three and nine months ended September 30, 2020: ($ in thousands) Commercial and Industrial Commercial Real Estate Multifamily SBA Construction Single Family Residential Mortgage Other Consumer Total ALL: Three Months Ended September 30, 2020: Balance at June 30, 2020 $ 26,618 $ 17,372 $ 25,105 $ 4,184 $ 6,675 $ 9,665 $ 751 $ 90,370 Charge-offs (1,597) — — (224) — — — (1,821) Recoveries 116 — — 132 — — — 248 Net charge-offs (1,481) — — (92) — — — (1,573) Provision for (reversal of) credit losses - loans 1,454 2,001 454 (535) (470) (689) (85) 2,130 Balance at September 30, 2020 $ 26,591 $ 19,373 $ 25,559 $ 3,557 $ 6,205 $ 8,976 $ 666 $ 90,927 Nine Months Ended September 30, 2020: Balance at December 31, 2019 $ 22,353 $ 5,941 $ 11,405 $ 3,120 $ 3,906 $ 10,486 $ 438 $ 57,649 Adoption of ASU No. 2016-13 662 4,847 1,809 388 103 (420) 220 7,609 Charge-offs (2,761) — — (580) — (552) (4) (3,897) Recoveries 265 — — 253 — 639 49 1,206 Net (charge-offs) recoveries (2,496) — — (327) — 87 45 (2,691) Provision for (reversal of) credit losses - loans 6,072 8,585 12,345 376 2,196 (1,177) (37) 28,360 Balance at September 30, 2020 $ 26,591 $ 19,373 $ 25,559 $ 3,557 $ 6,205 $ 8,976 $ 666 $ 90,927
Collateral Dependent Loans	Collateral dependent loans consisted of the following as of September 30, 2021 and December 31, 2020: September 30, 2021 Real Estate ($ in thousands) Commercial Residential Business Assets Total Commercial: Commercial and industrial 5,121 — 4,424 9,545 Commercial real estate 2,529 1,890 — 4,419 SBA 70 4,241 8,466 12,777 Consumer: Single family residential mortgage — 22,192 — 22,192 Total loans $ 7,720 $ 28,323 $ 12,890 $ 48,933 December 31, 2020 Real Estate ($ in thousands) Commercial Residential Business Assets Total Commercial: Commercial and industrial 5,492 — 4,965 10,457 Commercial real estate 2,644 2,010 — 4,654 SBA 349 497 2,750 3,596 Consumer: Single family residential mortgage — 17,820 — 17,820 Other consumer — 157 — 157 Total loans $ 8,485 $ 20,484 $ 7,715 $ 36,684
Troubled Debt Restructurings	TDR loans consisted of the following as of the dates indicated: September 30, 2021 December 31, 2020 ($ in thousands) NTM Traditional Loans Total NTM Traditional Loans Total Commercial: Commercial and industrial $ — $ 2,289 $ 2,289 $ — $ 3,884 $ 3,884 SBA — 264 264 — 265 265 Consumer: Single family residential mortgage 3,432 2,216 5,648 2,631 2,217 4,848 Other consumer — — — — — — Total $ 3,432 $ 4,769 $ 8,201 $ 2,631 $ 6,366 $ 8,997 The following table summarizes the pre-modification and post-modification balances of the new TDRs for the periods indicated: Three Months Ended Nine Months Ended ($ in thousands) Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment September 30, 2021 Consumer: Single family residential mortgage — $ — $ — 1 1,800 1,800 Total — — — 1 $ 1,800 $ 1,800 September 30, 2020 Commercial: Commercial and industrial — $ — $ — 1 $ 5,000 $ 5,000 Total — $ — $ — 1 $ 5,000 $ 5,000 The following table summarizes TDRs by modification type for the period indicated: Nine Months Ended Modification Type Extension of Maturity Total ($ in thousands) Count Amount Count Amount September 30, 2021 Consumer: Single family residential mortgage 1 1,800 1 1,800 Total 1 $ 1,800 1 $ 1,800 September 30, 2020 Commercial: Commercial and industrial 1 $ 5,000 1 $ 5,000 Total 1 $ 5,000 1 $ 5,000
Non Traditional Mortgages Portfolio	The following table presents the composition of the NTM portfolio, which are included in the single family residential mortgage portfolio, as of the dates indicated: September 30, 2021 December 31, 2020 ($ in thousands) Count Amount Percent Count Amount Percent Consumer: Single family residential mortgage: Green Loans (HELOC) - first liens 36 $ 25,074 4.4 % 48 $ 31,587 7.2 % Interest Only - first liens 337 543,243 95.1 % 283 401,640 91.9 % Negative amortization 4 1,464 0.3 % 8 2,288 0.5 % Total NTM - first liens 377 569,781 99.7 % 339 435,515 99.6 % Other consumer: Green Loans (HELOC) - second liens 5 1,597 0.3 % 5 1,598 0.4 % Total NTM - second liens 5 1,597 0.3 % 5 1,598 0.4 % Total NTM loans 382 $ 571,378 100.0 % 344 $ 437,113 100.0 % Total loans receivable $ 6,228,575 $ 5,898,405 % of total NTM loans to total loans receivable 9.2 % 7.4 %

GOODWILL AND OTHER INTANGIBLE_2

GOODWILL AND OTHER INTANGIBLE ASSETS, NET (Tables)	9 Months Ended
	Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-lived Intangible Assets	As of September 30, 2021, the weighted average remaining amortization period for core deposit intangibles was approximately 3.1 years. ($ in thousands) Gross Carrying Value Accumulated Amortization Net Carrying Value September 30, 2021 Core deposit intangibles $ 30,904 $ 29,117 $ 1,787 December 31, 2020 Core deposit intangibles $ 30,904 $ 28,271 $ 2,633
Estimated Future Amortization Expense	The following table presents estimated future amortization expenses as of September 30, 2021: ($ in thousands) Remainder of 2021 2022 2023 2024 Total Estimated future amortization expense $ 236 $ 799 $ 517 $ 235 $ 1,787

FEDERAL HOME LOAN BANK ADVANC_2

FEDERAL HOME LOAN BANK ADVANCES AND OTHER BORROWINGS (Tables)	9 Months Ended
	Sep. 30, 2021
Federal Home Loan Banks [Abstract]
Summary of Advances From the FHLB	The following table presents advances from the FHLB as of the dates indicated: ($ in thousands) September 30, December 31, Fixed rate: Outstanding balance (1)(2) $ 411,000 $ 461,000 Interest rates ranging from (2) 0.64 % — % Interest rates ranging to 3.32 % 3.32 % Weighted average interest rate 2.53 % 2.51 % Variable rate: Outstanding balance $ — $ 85,000 Weighted average interest rate — % 0.17 % (1) Excludes $5.3 million and $6.2 million of unamortized debt issuance costs at September 30, 2021 and December 31, 2020. (2) Includes zero and $5.0 million in FHLB recovery advances at September 30, 2021 and December 31, 2020 with an interest rate of 0.00% that matured on May 27, 2021.

LONG-TERM DEBT (Tables)

LONG-TERM DEBT (Tables)	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	The following table presents our long-term debt as of the dates indicated: September 30, 2021 December 31, 2020 ($ in thousands) Par Value Unamortized Debt Issuance Cost and Discount Par Value Unamortized Debt Issuance Cost and Discount 5.25% senior notes due April 15, 2025 $ 175,000 $ (1,104) $ 175,000 $ (1,291) 4.375% subordinated notes due October 30, 2030 85,000 (2,190) 85,000 (2,394) Total $ 260,000 $ (3,294) $ 260,000 $ (3,685)

DERIVATIVE INSTRUMENTS (Tables)

DERIVATIVE INSTRUMENTS (Tables)	9 Months Ended
	Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Amount and Market Value of Mortgage Banking Derivatives	The following table presents the notional amount and fair value of derivative instruments included in the consolidated statements of financial condition as of the dates indicated. September 30, 2021 December 31, 2020 ($ in thousands) Notional Amount Fair Notional Amount Fair Derivative assets: Interest rate swaps on loans $ 63,514 $ 4,495 $ 67,840 $ 7,304 Foreign exchange contracts 5,295 173 7,010 328 Total $ 68,809 $ 4,668 $ 74,850 $ 7,632 Derivative liabilities: Interest rate swaps on loans $ 63,514 $ 4,739 $ 67,840 7,789 Foreign exchange contracts 5,295 159 7,010 313 Total $ 68,809 $ 4,898 $ 74,850 $ 8,102

EMPLOYEE STOCK COMPENSATION (Ta

EMPLOYEE STOCK COMPENSATION (Tables)	9 Months Ended
	Sep. 30, 2021
Share-based Payment Arrangement [Abstract]
Summary of Share-based Compensation Expense	The following table presents stock-based compensation expense and the related tax benefits for the periods indicated: Three Months Ended Nine Months Ended ($ in thousands) 2021 2020 2021 2020 Stock options $ — $ — $ — $ 4 Restricted stock awards and units 1,106 1,346 3,988 4,388 Total share-based compensation expense $ 1,106 $ 1,346 $ 3,988 $ 4,392 Related tax benefits $ 326 $ 396 $ 1,175 $ 1,293
Restricted Stock and Restricted Stock Units Activity	The following table presents unvested restricted stock awards and restricted stock units activity for the three and nine months ended September 30, 2021: Three Months Ended Nine Months Ended Number of Shares Weighted Average Grant Date Fair Value Per Share Number of Shares Weighted Outstanding at beginning of period 697,088 $ 17.13 848,302 $ 14.42 Granted (1) 14,312 $ 17.47 283,642 $ 19.87 Vested (2) (11,809) $ 15.14 (367,089) $ 13.75 Forfeited (3) (38,724) $ 17.31 (103,988) $ 14.24 Outstanding at end of period 660,867 $ 17.16 660,867 $ 17.16 (1) There were zero and 66,472 performance-based shares/units included in shares granted for the three and nine months ended September 30, 2021. (2) There were zero and 77,327 performance-based shares/units included in vested shares for the three and nine months ended September 30, 2021. (3) The number of forfeited shares includes aggregate performance-based shares/units of 8,643 and 48,803 for the three and nine months ended September 30, 2021.
Option Activity	The following table represents stock option activity for the three months ended September 30, 2021: Three Months Ended September 30, 2021 ($ in thousands except per share data) Number of Shares Weighted-Average Exercise Price Per Share Weighted-Average Remaining Contract Term Aggregated Intrinsic Value Outstanding at beginning of period 14,904 $ 13.05 Exercised — $ — Outstanding at end of period 14,904 $ 13.05 3.5 years $ 81 Exercisable at end of period 14,904 $ 13.05 3.5 years $ 81 The following table represents stock option activity for the nine months ended September 30, 2021: Nine Months Ended September 30, 2021 ($ in thousands except per share data) Number of Shares Weighted-Average Exercise Price Per Share Weighted-Average Remaining Contract Term Aggregated Intrinsic Value Outstanding at beginning of period 55,069 $ 13.96 Exercised (40,165) $ 14.30 Outstanding at end of period 14,904 $ 13.05 3.5 years $ 81 Exercisable at end of period 14,904 $ 13.05 3.5 years $ 81
Summary of all Outstanding SARs	The following table represents SARs activity and the weighted average exercise price per share as of and for the three and nine months ended September 30, 2021: Three Months Ended Nine Months Ended ($ in thousands except per share data) Number of Shares Weighted-Average Exercise Price Per Share Number of Shares Weighted-Average Exercise Price Per Share Outstanding at beginning of period — $ — 1,559,012 $ 11.60 Exercised — $ — (1,559,012) $ 11.60 Outstanding at end of period — $ — — $ — Exercisable at end of period — $ — — $ —

STOCKHOLDERS' EQUITY (Tables)

STOCKHOLDERS' EQUITY (Tables)	9 Months Ended
	Sep. 30, 2021
Equity [Abstract]
Summary of Preferred Stock	The following table presents our total outstanding preferred stock as of the dates indicated: September 30, 2021 December 31, 2020 ($ in thousands) Shares Outstanding Liquidation Preference Carrying Value Shares Outstanding Liquidation Preference Carrying Value Series D 7.375% non-cumulative perpetual — $ — $ — 93,270 $ 93,270 $ 89,922 Series E non-cumulative perpetual 98,702 98,702 94,956 98,702 98,702 94,956 Total 98,702 $ 98,702 $ 94,956 191,972 $ 191,972 $ 184,878 Three Months Ended Nine Months Ended ($ in thousands) 2021 2020 2021 2020 Series D Preferred Stock: Depositary shares repurchased — 100 3,730,767 134,410 Preferred Stock retired (shares) — 3 93,269 3,360 Consideration paid $ — $ 2 $ 93,269 $ 2,698 Carrying value — 2 89,922 3,240 Impact of preferred stock redemption $ — $ — $ 3,347 $ (541) Series E Preferred Stock: Depositary shares repurchased — 6,502 — 70,967 Preferred Stock retired (shares) — 163 — 1,774 Consideration paid $ — $ 164 $ — $ 1,680 Carrying value — 156 — 1,707 Impact of preferred stock redemption $ — $ 7 $ — $ (27)
Changes to Accumulate Other Comprehensive Income by Components	The following table presents changes to AOCI for the periods indicated: Three Months Ended Nine Months Ended ($ in thousands) 2021 2020 2021 2020 Unrealized gain (loss) on securities available-for-sale Balance at beginning of period $ 14,740 $ (15,565) $ 7,746 $ (11,900) Unrealized gain (loss) arising during the period (5,377) 23,859 4,535 20,677 Reclassification adjustment from other comprehensive income — — — (2,011) Tax effect of current period changes 1,585 (7,028) (1,333) (5,500) Total changes, net of taxes (3,792) 16,831 3,202 13,166 Balance at end of period $ 10,948 $ 1,266 $ 10,948 $ 1,266

VARIABLE INTEREST ENTITIES (Tab

VARIABLE INTEREST ENTITIES (Tables)	9 Months Ended
	Sep. 30, 2021
Variable Interest Entity [Line Items]
Summary of Unconsolidated VIEs	The following table represents the carrying value of the associated unconsolidated assets and liabilities and the associated maximum loss exposure for alternative energy partnerships as of the dates indicated: ($ in thousands) September 30, December 31, Cash $ 3,109 $ 3,228 Equipment, net of depreciation 234,972 241,015 Other assets 8,715 7,470 Total unconsolidated assets $ 246,796 $ 251,713 Total unconsolidated liabilities $ 6,230 $ 6,357 Maximum loss exposure $ 25,196 $ 27,977
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Summary of Unconsolidated VIEs	The following table presents information regarding activity in our alternative energy partnerships for the periods indicated: Three Months Ended Nine Months Ended ($ in thousands) 2021 2020 2021 2020 Fundings $ — $ — $ — $ 3,631 Cash distribution from investment 657 611 1,765 1,612 Gain (loss) on investments in alternative energy partnerships 1,785 1,430 (1,016) (308) Income tax credits recognized — — — — Tax expense (benefit) recognized from HLBV application 491 185 (280) (111)
Variable Interest Entity, Not Primary Beneficiary | Affordable Housing Fund Investment
Variable Interest Entity [Line Items]
Summary of Unconsolidated VIEs	The following table presents information regarding balances in our qualified affordable housing partnerships for the periods indicated: ($ in thousands) September 30, December 31, Ending balance (1) $ 40,095 $ 43,209 Aggregate funding commitment 61,278 61,278 Total amount funded 48,718 42,991 Unfunded commitment 12,560 18,287 Maximum loss exposure 40,095 43,209 (1) Included in other assets in the accompanying Consolidated Statements of Financial Condition. The following table presents information regarding activity in our qualified affordable housing partnerships for the periods indicated: Three Months Ended Nine Months Ended ($ in thousands) 2021 2020 2021 2020 Fundings $ 3,563 $ 1,602 $ 5,727 $ 15,473 Proportional amortization recognized 1,051 1,724 3,114 4,019 Income tax credits recognized 1,155 1,007 3,466 3,215

EARNINGS (LOSS) PER COMMON SH_2

EARNINGS (LOSS) PER COMMON SHARE (Tables)	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Basic and Diluted Earnings Per Common Share	The following table presents computations of basic and diluted earnings (loss) per common share ("EPS") for the three and nine months ended September 30, 2021: Three Months Ended September 30, 2021 Nine Months Ended ($ in thousands except per share data) Common Stock Class B Common Stock Class B Common Stock Net income $ 22,953 $ 217 $ 56,061 $ 534 Less: Income allocated to participating securities — — (158) (2) Less: preferred stock dividends (1,711) (16) (6,533) (62) Less: preferred stock redemption — — (3,315) (32) Net income allocated to common stockholders $ 21,242 $ 201 $ 46,055 $ 438 Weighted average common shares outstanding 50,239,359 477,321 50,096,607 477,321 Dilutive effects of restricted shares/units 188,850 — 242,803 — Dilutive effects of stock options 3,787 — 5,241 — Average shares and dilutive common shares 50,431,996 477,321 50,344,651 477,321 Basic earnings per common share $ 0.42 $ 0.42 $ 0.92 $ 0.92 Diluted earnings per common share $ 0.42 $ 0.42 $ 0.91 $ 0.92 The following table presents computations of basic and diluted EPS for the three and nine months ended September 30, 2020: Three Months Ended September 30, 2020 Nine Months Ended September 30, 2020 ($ in thousands except per share data) Common Stock Class B Common Stock Common Stock Class B Common Stock Net loss $ 15,761 $ 152 $ (9,043) $ (86) Less: income allocated to participating securities (278) (3) — — Less: participating securities dividends (93) (1) (279) (3) Less: preferred stock dividends (3,414) (33) (10,323) (99) Less: preferred stock redemption (7) — 563 5 Net loss allocated to common stockholders $ 11,969 $ 115 $ (19,082) $ (183) Weighted average common shares outstanding 49,631,334 477,321 49,723,791 477,321 Dilutive effects of stock units 82,278 — — — Dilutive effects of stock options — — — — Average shares and dilutive common shares 49,713,612 477,321 49,723,791 477,321 Basic earnings (loss) per common share $ 0.24 $ 0.24 $ (0.38) $ (0.38) Diluted earnings (loss) per common share $ 0.24 $ 0.24 $ (0.38) $ (0.38)

LOAN COMMITMENTS AND OTHER RE_2

LOAN COMMITMENTS AND OTHER RELATED ACTIVITIES (Tables)	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Contractual Amount of Financial Instruments With Off-balance-sheet Risk	The following table presents the contractual amount of financial instruments with off-balance-sheet risk as of the periods indicated: September 30, 2021 December 31, 2020 ($ in thousands) Fixed Rate Variable Rate Fixed Rate Variable Rate Commitments to extend credit $ 28,983 $ 124,427 $ 17,555 $ 38,141 Unused lines of credit 3,043 1,462,873 1,783 1,348,138 Letters of credit 487 7,694 234 8,274

REVENUE RECOGNITION (Tables)

REVENUE RECOGNITION (Tables)	9 Months Ended
	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Summary of Noninterest (Loss) Income	The following table presents noninterest income, segregated by revenue streams, in-scope and out-of-scope of Topic 606 - Revenue From Contracts With Customers , for the periods indicated: Three Months Ended Nine Months Ended ($ in thousands) 2021 2020 2021 2020 Noninterest income In scope of Topic 606 Deposit service fees $ 913 $ 648 $ 2,548 $ 1,607 Debit card fees 451 384 1,333 941 Other 146 49 327 157 Noninterest income (in-scope of Topic 606) 1,510 1,081 4,208 2,705 Noninterest income (out-of-scope of Topic 606) 4,009 2,873 9,862 8,838 Total noninterest income $ 5,519 $ 3,954 $ 14,070 $ 11,543

SUMMARY OF SIGNIFICANT ACCOUN_3

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) $ in Thousands	1 Months Ended	9 Months Ended
	Sep. 30, 2021USD ($)branch	Sep. 30, 2021USD ($)branch	Sep. 30, 2020USD ($)
Accounting Policies [Abstract]
Number of banking offices | branch		33
Number of branches under sale-leaseback transactions | branch	1	1
Sale leaseback transaction, net book value	$ 4,200
Gain on sale-leaseback of branch	$ 841	$ 841	$ 0
Lessor, operating lease, term of contract	5 years	5 years
Operating lease right of use assets recognized	$ 811

FAIR VALUES OF FINANCIAL INST_3

FAIR VALUES OF FINANCIAL INSTRUMENTS - Additional Information (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities available-for-sale, at fair value	$ 1,303,368,000	$ 1,231,431,000
Discontinued Operations
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held-for-sale that were 90 days or more past due and still accruing	0	0
U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Aggregate unpaid principal balance	$ 1,000,000	$ 1,000,000
Insured Loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Expected loss rate	1.55%	1.55%
Uninsured Loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Expected loss rate	20.00%	20.00%
Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities available-for-sale, at fair value	$ 0	$ 0
Significant Unobservable Inputs (Level 3) | Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities available-for-sale, at fair value	$ 0	$ 0

FAIR VALUES OF FINANCIAL INST_4

FAIR VALUES OF FINANCIAL INSTRUMENTS - Recurring Basis (Details) - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	$ 1,303,368,000	$ 1,231,431,000
Derivative assets	4,668,000	7,632,000
Derivative liabilities	4,898,000	8,102,000
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Derivative assets	0	0
Derivative liabilities	0	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	1,303,368,000	1,231,431,000
Derivative assets	4,668,000	7,632,000
Derivative liabilities	4,898,000	8,102,000
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Derivative assets	0	0
Derivative liabilities	0	0
Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	1,303,368,000	1,231,431,000
Derivative assets	4,668,000	7,632,000
Derivative liabilities	4,898,000	8,102,000
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale, carried at fair value	0	0
Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale, carried at fair value	2,427,000	468,000
Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Loans held-for-sale, carried at fair value	995,000	945,000
Recurring | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale, carried at fair value	3,422,000	1,413,000
SBA loan pool securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	15,421,000	17,354,000
SBA loan pool securities | Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
SBA loan pool securities | Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	15,421,000	17,354,000
SBA loan pool securities | Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
SBA loan pool securities | Recurring | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	15,421,000	17,354,000
U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	193,286,000	106,384,000
U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities | Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities | Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	193,286,000	106,384,000
U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities | Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities | Recurring | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	193,286,000	106,384,000
U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	255,305,000	211,831,000
U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations | Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations | Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	255,305,000	211,831,000
U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations | Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations | Recurring | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	255,305,000	211,831,000
Municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	120,417,000	68,623,000
Municipal securities | Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Municipal securities | Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	120,417,000	68,623,000
Municipal securities | Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Municipal securities | Recurring | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	120,417,000	68,623,000
Non-agency residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	154,000	160,000
Non-agency residential mortgage-backed securities | Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Non-agency residential mortgage-backed securities | Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	154,000	160,000
Non-agency residential mortgage-backed securities | Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Non-agency residential mortgage-backed securities | Recurring | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	154,000	160,000
Collateralized loan obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	549,277,000	677,785,000
Collateralized loan obligations | Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Collateralized loan obligations | Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	549,277,000	677,785,000
Collateralized loan obligations | Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Collateralized loan obligations | Recurring | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	549,277,000	677,785,000
Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	169,508,000	149,294,000
Corporate debt securities | Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Corporate debt securities | Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	169,508,000	149,294,000
Corporate debt securities | Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Corporate debt securities | Recurring | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	169,508,000	149,294,000
Interest rate swaps | Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Interest rate swaps | Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	4,495,000	7,304,000
Derivative liabilities	4,739,000	7,789,000
Interest rate swaps | Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Interest rate swaps | Recurring | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	4,495,000	7,304,000
Derivative liabilities	4,739,000	7,789,000
Foreign exchange contracts | Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Foreign exchange contracts | Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	173,000	328,000
Derivative liabilities	159,000	313,000
Foreign exchange contracts | Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Foreign exchange contracts | Recurring | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	173,000	328,000
Derivative liabilities	$ 159,000	$ 313,000

FAIR VALUES OF FINANCIAL INST_5

FAIR VALUES OF FINANCIAL INSTRUMENTS - Reconciliation of Assets Measured at Fair Value on Recurring Basis (Details) - Recurring - Significant Unobservable Inputs (Level 3) - U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	$ 941	$ 16,685	$ 945	$ 19,233
Total gains (losses) (realized/unrealized):
Included in earnings—fair value adjustment	57	18	57	(1,351)
Sales, settlements, and other	(3)	(15,320)	(7)	(16,499)
Balance at end of period	$ 995	$ 1,383	$ 995	$ 1,383

FAIR VALUES OF FINANCIAL INST_6

FAIR VALUES OF FINANCIAL INSTRUMENTS - Fair Value Option Loans Held-for-Sale (Details) - Continuing Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Fair Value
Total loans	$ 3,422		$ 3,422		$ 1,413
Non-accrual loans	698		698		654
Unpaid Principal Balance
Total loans	3,677		3,677		1,680
Non-accrual loans	747		747		750
Difference
Total loans	(255)		(255)		(267)
Non-accrual loans	(49)		(49)		(96)
Non-accrual loans, guaranteed by US government	189		189		$ 190
Net gains (losses) from fair value changes:	$ 160	$ 24	$ 180	$ (1,537)

FAIR VALUES OF FINANCIAL INST_7

FAIR VALUES OF FINANCIAL INSTRUMENTS - Nonrecurring Basis (Details) - Nonrecurring - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Quoted Prices in Active Markets for Identical Assets (Level 1) | Single family residential mortgage
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent loans:	$ 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | SBA
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent loans:	0	$ 0
Significant Other Observable Inputs (Level 2) | Single family residential mortgage
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent loans:	0
Significant Other Observable Inputs (Level 2) | SBA
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent loans:	0	0
Significant Unobservable Inputs (Level 3) | Single family residential mortgage
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent loans:	2,319
Significant Unobservable Inputs (Level 3) | SBA
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent loans:	3,925	629
Carrying Value | Single family residential mortgage
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent loans:	2,319
Carrying Value | SBA
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent loans:	$ 3,925	$ 629

FAIR VALUES OF FINANCIAL INST_8

FAIR VALUES OF FINANCIAL INSTRUMENTS - Gains and (Losses) on Non-Recurring Assets (Details) - Nonrecurring - Collateral dependent loans: - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Single family residential mortgage
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gains (losses) recognized on assets measured at fair value	$ 0	$ (191)	$ (211)	$ (169)
Commercial and industrial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gains (losses) recognized on assets measured at fair value	0	(2,285)	38	(9,707)
SBA
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gains (losses) recognized on assets measured at fair value	(1,377)	(533)	(1,886)	(1,722)
Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gains (losses) recognized on assets measured at fair value	$ 2	$ 0	$ (138)	$ 0

FAIR VALUES OF FINANCIAL INST_9

FAIR VALUES OF FINANCIAL INSTRUMENTS - Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financial assets
Cash and cash equivalents	$ 185,840	$ 220,819
Securities available-for-sale, at fair value	1,303,368	1,231,431
Federal Home Loan Bank and other bank stock	44,604	44,506
Loans held-for-sale, carried at fair value	3,422	1,413
Loans receivable, net of allowance for credit losses	6,235,625	5,936,708
Accrued interest receivable	30,546	29,445
Derivative assets	4,668	7,632
Financial liabilities
Deposits	6,543,653	6,087,714
Advances from Federal Home Loan Bank	437,111	585,416
Other borrowings	100,000
Long-term debt	274,493	273,230
Derivative liabilities	4,898	8,102
Accrued interest payable	6,645	3,714
Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets
Cash and cash equivalents	185,840	220,819
Securities available-for-sale, at fair value	0	0
Federal Home Loan Bank and other bank stock	0	0
Loans held-for-sale, carried at fair value	0	0
Loans receivable, net of allowance for credit losses	0	0
Accrued interest receivable	30,546	29,445
Derivative assets	0	0
Financial liabilities
Deposits	0	0
Advances from Federal Home Loan Bank	0	0
Other borrowings	0
Long-term debt	0	0
Derivative liabilities	0	0
Accrued interest payable	6,645	3,714
Significant Other Observable Inputs (Level 2)
Financial assets
Cash and cash equivalents	0	0
Securities available-for-sale, at fair value	1,303,368	1,231,431
Federal Home Loan Bank and other bank stock	44,604	44,506
Loans held-for-sale, carried at fair value	2,427	468
Loans receivable, net of allowance for credit losses	0	0
Accrued interest receivable	0	0
Derivative assets	4,668	7,632
Financial liabilities
Deposits	0	0
Advances from Federal Home Loan Bank	437,111	585,416
Other borrowings	100,000
Long-term debt	274,493	273,230
Derivative liabilities	4,898	8,102
Accrued interest payable	0	0
Significant Unobservable Inputs (Level 3)
Financial assets
Cash and cash equivalents	0	0
Securities available-for-sale, at fair value	0	0
Federal Home Loan Bank and other bank stock	0	0
Loans held-for-sale, carried at fair value	995	945
Loans receivable, net of allowance for credit losses	6,235,625	5,936,708
Accrued interest receivable	0	0
Derivative assets	0	0
Financial liabilities
Deposits	6,543,653	6,087,714
Advances from Federal Home Loan Bank	0	0
Other borrowings	0
Long-term debt	0	0
Derivative liabilities	0	0
Accrued interest payable	0	0
Carrying Value
Financial assets
Cash and cash equivalents	185,840	220,819
Securities available-for-sale, at fair value	1,303,368	1,231,431
Federal Home Loan Bank and other bank stock	44,604	44,506
Loans held-for-sale, carried at fair value	3,422	1,413
Loans receivable, net of allowance for credit losses	6,155,051	5,817,375
Accrued interest receivable	30,546	29,445
Derivative assets	4,668	7,632
Financial liabilities
Deposits	6,543,225	6,085,800
Advances from Federal Home Loan Bank	405,738	539,795
Other borrowings	100,000
Long-term debt	256,706	256,315
Derivative liabilities	4,898	8,102
Accrued interest payable	$ 6,645	$ 3,714

INVESTMENT SECURITIES - Summary

INVESTMENT SECURITIES - Summary of Amortized Cost and Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost	$ 1,287,846	$ 1,220,444
Gross Unrealized Gains	21,303	20,959
Gross Unrealized Losses	(5,781)	(9,972)
Securities available-for-sale, at fair value	1,303,368	1,231,431
SBA loan pool securities
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost	15,489	17,436
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(68)	(82)
Securities available-for-sale, at fair value	15,421	17,354
U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost	190,708	99,591
Gross Unrealized Gains	3,556	6,793
Gross Unrealized Losses	(978)	0
Securities available-for-sale, at fair value	193,286	106,384
U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost	254,775	209,426
Gross Unrealized Gains	2,062	2,571
Gross Unrealized Losses	(1,532)	(166)
Securities available-for-sale, at fair value	255,305	211,831
Municipal securities
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost	117,955	64,355
Gross Unrealized Gains	3,167	4,272
Gross Unrealized Losses	(705)	(4)
Securities available-for-sale, at fair value	120,417	68,623
Non-agency residential mortgage-backed securities
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost	149	156
Gross Unrealized Gains	5	4
Gross Unrealized Losses	0	0
Securities available-for-sale, at fair value	154	160
Collateralized loan obligations
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost	551,775	687,505
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(2,498)	(9,720)
Securities available-for-sale, at fair value	549,277	677,785
Corporate debt securities
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost	156,995	141,975
Gross Unrealized Gains	12,513	7,319
Gross Unrealized Losses	0	0
Securities available-for-sale, at fair value	$ 169,508	$ 149,294

INVESTMENT SECURITIES - Additio

INVESTMENT SECURITIES - Additional Information (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2021USD ($)security	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)security	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)security
Debt Securities, Available-for-sale [Line Items]
Allowance for credit losses for debt securities	$ 0		$ 0		$ 0
Securities available for sale portfolio | security	116		116		103
Available for sale securities in unrealized loss position | security	44		44		50
OTTI recorded	$ 0	$ 0	$ 0	$ 0
Collateral Pledged
Debt Securities, Available-for-sale [Line Items]
Securities pledged	28,900,000		28,900,000		$ 43,700,000
Available-for-sale Securities
Debt Securities, Available-for-sale [Line Items]
Accrued interest receivable on debt securities available-for-sale	$ 5,900,000		$ 5,900,000		$ 5,900,000

INVESTMENT SECURITIES - Proceed

INVESTMENT SECURITIES - Proceeds from Sales and Calls of Securities and Associated Gross Gains and Losses (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Investments, Debt and Equity Securities [Abstract]
Gross realized gains	$ 0		$ 0	$ 0	$ 2,011
Gross realized losses	0		0	0	0
Net realized gains on sales and calls	0	$ 0	0	0	2,011
Proceeds from sales and calls	$ 20,000		$ 0	$ 120,230	$ 52,727

INVESTMENT SECURITIES - Summa_2

INVESTMENT SECURITIES - Summary of Investment Securities with Unrealized Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Securities available-for-sale:
Less Than 12 Months	$ 245,541	$ 112,563
12 Months or Longer	290,896	613,010
Total	536,437	725,573
Gross Unrealized Losses
Less Than 12 Months	(2,337)	(477)
12 Months or Longer	(3,444)	(9,495)
Total	(5,781)	(9,972)
SBA loan pool securities
Securities available-for-sale:
Less Than 12 Months	3,476	17,354
12 Months or Longer	11,945	0
Total	15,421	17,354
Gross Unrealized Losses
Less Than 12 Months	(6)	(82)
12 Months or Longer	(62)	0
Total	(68)	(82)
U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities
Securities available-for-sale:
Less Than 12 Months	54,501
12 Months or Longer	0
Total	54,501
Gross Unrealized Losses
Less Than 12 Months	(978)
12 Months or Longer	0
Total	(978)
U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations
Securities available-for-sale:
Less Than 12 Months	77,262	19,033
12 Months or Longer	9,686	0
Total	86,948	19,033
Gross Unrealized Losses
Less Than 12 Months	(1,048)	(166)
12 Months or Longer	(484)	0
Total	(1,532)	(166)
Municipal securities
Securities available-for-sale:
Less Than 12 Months	43,346	11,401
12 Months or Longer	10,945	0
Total	54,291	11,401
Gross Unrealized Losses
Less Than 12 Months	(261)	(4)
12 Months or Longer	(444)	0
Total	(705)	(4)
Collateralized loan obligations
Securities available-for-sale:
Less Than 12 Months	66,956	64,775
12 Months or Longer	258,320	613,010
Total	325,276	677,785
Gross Unrealized Losses
Less Than 12 Months	(44)	(225)
12 Months or Longer	(2,454)	(9,495)
Total	$ (2,498)	$ (9,720)

INVESTMENT SECURITIES - Composi

INVESTMENT SECURITIES - Composition, Repricing and Yield Information of Investment Securities Portfolio (Details) $ in Thousands	Sep. 30, 2021USD ($)
Debt Securities, Available-for-sale [Line Items]
Securities available-for-sale, one year or less, fair value	$ 670,360
Securities available-for-sale, one year or less, weighted average yield (percent)	1.56%
Securities available-for-sale, more than one year through five years, fair value	$ 162,179
Securities available-for-sale, more than one year through five years, weighted average yield (percent)	4.62%
Securities available-for-sale, more than five years through ten years, fair value	$ 105,449
Securities available-for-sale, more than five years through ten years, weighted average yield (percent)	2.42%
Securities available-for-sale, more than ten years, fair value	$ 365,380
Securities available-for-sale, more than ten years, weighted average yield (percent)	2.11%
Securities available-for-sale, fair value	$ 1,303,368
Weighted-Average Yield	2.15%
SBA loan pool securities
Debt Securities, Available-for-sale [Line Items]
Securities available-for-sale, one year or less, fair value	$ 15,421
Securities available-for-sale, one year or less, weighted average yield (percent)	0.93%
Securities available-for-sale, more than one year through five years, fair value	$ 0
Securities available-for-sale, more than one year through five years, weighted average yield (percent)	0.00%
Securities available-for-sale, more than five years through ten years, fair value	$ 0
Securities available-for-sale, more than five years through ten years, weighted average yield (percent)	0.00%
Securities available-for-sale, more than ten years, fair value	$ 0
Securities available-for-sale, more than ten years, weighted average yield (percent)	0.00%
Securities available-for-sale, fair value	$ 15,421
Weighted-Average Yield	0.93%
U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Securities available-for-sale, one year or less, fair value	$ 0
Securities available-for-sale, one year or less, weighted average yield (percent)	0.00%
Securities available-for-sale, more than one year through five years, fair value	$ 0
Securities available-for-sale, more than one year through five years, weighted average yield (percent)	0.00%
Securities available-for-sale, more than five years through ten years, fair value	$ 29,294
Securities available-for-sale, more than five years through ten years, weighted average yield (percent)	2.20%
Securities available-for-sale, more than ten years, fair value	$ 163,992
Securities available-for-sale, more than ten years, weighted average yield (percent)	2.16%
Securities available-for-sale, fair value	$ 193,286
Weighted-Average Yield	2.17%
U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Securities available-for-sale, one year or less, fair value	$ 105,662
Securities available-for-sale, one year or less, weighted average yield (percent)	0.63%
Securities available-for-sale, more than one year through five years, fair value	$ 10,978
Securities available-for-sale, more than one year through five years, weighted average yield (percent)	1.97%
Securities available-for-sale, more than five years through ten years, fair value	$ 42,423
Securities available-for-sale, more than five years through ten years, weighted average yield (percent)	1.34%
Securities available-for-sale, more than ten years, fair value	$ 96,242
Securities available-for-sale, more than ten years, weighted average yield (percent)	1.75%
Securities available-for-sale, fair value	$ 255,305
Weighted-Average Yield	1.23%
Municipal securities
Debt Securities, Available-for-sale [Line Items]
Securities available-for-sale, one year or less, fair value	$ 0
Securities available-for-sale, one year or less, weighted average yield (percent)	0.00%
Securities available-for-sale, more than one year through five years, fair value	$ 0
Securities available-for-sale, more than one year through five years, weighted average yield (percent)	0.00%
Securities available-for-sale, more than five years through ten years, fair value	$ 15,425
Securities available-for-sale, more than five years through ten years, weighted average yield (percent)	2.62%
Securities available-for-sale, more than ten years, fair value	$ 104,992
Securities available-for-sale, more than ten years, weighted average yield (percent)	2.37%
Securities available-for-sale, fair value	$ 120,417
Weighted-Average Yield	2.40%
Non-agency residential mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Securities available-for-sale, one year or less, fair value	$ 0
Securities available-for-sale, one year or less, weighted average yield (percent)	0.00%
Securities available-for-sale, more than one year through five years, fair value	$ 0
Securities available-for-sale, more than one year through five years, weighted average yield (percent)	0.00%
Securities available-for-sale, more than five years through ten years, fair value	$ 0
Securities available-for-sale, more than five years through ten years, weighted average yield (percent)	0.00%
Securities available-for-sale, more than ten years, fair value	$ 154
Securities available-for-sale, more than ten years, weighted average yield (percent)	6.36%
Securities available-for-sale, fair value	$ 154
Weighted-Average Yield	6.36%
Collateralized loan obligations
Debt Securities, Available-for-sale [Line Items]
Securities available-for-sale, one year or less, fair value	$ 549,277
Securities available-for-sale, one year or less, weighted average yield (percent)	1.76%
Securities available-for-sale, more than one year through five years, fair value	$ 0
Securities available-for-sale, more than one year through five years, weighted average yield (percent)	0.00%
Securities available-for-sale, more than five years through ten years, fair value	$ 0
Securities available-for-sale, more than five years through ten years, weighted average yield (percent)	0.00%
Securities available-for-sale, more than ten years, fair value	$ 0
Securities available-for-sale, more than ten years, weighted average yield (percent)	0.00%
Securities available-for-sale, fair value	$ 549,277
Weighted-Average Yield	1.76%
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Securities available-for-sale, one year or less, fair value	$ 0
Securities available-for-sale, one year or less, weighted average yield (percent)	0.00%
Securities available-for-sale, more than one year through five years, fair value	$ 151,201
Securities available-for-sale, more than one year through five years, weighted average yield (percent)	4.82%
Securities available-for-sale, more than five years through ten years, fair value	$ 18,307
Securities available-for-sale, more than five years through ten years, weighted average yield (percent)	5.73%
Securities available-for-sale, more than ten years, fair value	$ 0
Securities available-for-sale, more than ten years, weighted average yield (percent)	0.00%
Securities available-for-sale, fair value	$ 169,508
Weighted-Average Yield	4.91%

LOANS AND ALLOWANCE FOR CREDI_3

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Loans Receivable (Details) $ in Thousands	Sep. 30, 2021USD ($)loan	Jun. 30, 2021USD ($)	Dec. 31, 2020USD ($)loan	Sep. 30, 2020USD ($)	Jun. 30, 2020USD ($)	Dec. 31, 2019USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 6,228,575		$ 5,898,405
Allowance for loan losses	(73,524)		(81,030)
Loans receivable, net	6,155,051		5,817,375
Deferred loan costs/(fees) and premiums/(discounts), net	12,500		6,200
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	(78,757)	$ (79,699)	(84,213)	$ (94,133)	$ (94,565)	$ (61,713)
Commercial | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	2,296,626		2,088,308
Commercial | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	907,224		807,195
Commercial | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	1,295,613		1,289,820
Commercial | SBA
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	181,582		273,444
Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	130,536		176,016
Commercial | Warehouse lending balances
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	1,520,000		1,340,000
Commercial | PPP loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 116,500		$ 210,000
Number of loans | loan	566		949
Deferred loan costs/(fees) and premiums/(discounts), net	$ 2,000		$ 1,600
Consumer | Single family residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	1,393,696		1,230,236
Consumer | Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 23,298		$ 33,386

LOANS AND ALLOWANCE FOR CREDI_4

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Credit Quality Indicators Additional Information (Details)	9 Months Ended
	Sep. 30, 2021
Receivables [Abstract]
Loans delinquent	60 days

LOANS AND ALLOWANCE FOR CREDI_5

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Risk Categories for Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	$ 1,360,847	$ 816,955
Origination year - 1 year prior to current fiscal year	528,512	840,484
Origination year - 2 years prior to current fiscal year	633,428	880,048
Origination year - 3 years prior to current fiscal year	653,100	457,039
Origination year - 4 years prior to current fiscal year	332,471	503,551
Origination year - more than 4 years prior to current fiscal year	928,624	739,203
Revolving Loans Amortized Cost Basis	1,767,671	1,640,519
Revolving Loans Amortized Cost Basis Converted to Term	23,922	20,606
Loans receivable, net	6,228,575	5,898,405
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	1,360,847	816,955
Origination year - 1 year prior to current fiscal year	523,266	821,644
Origination year - 2 years prior to current fiscal year	598,913	857,331
Origination year - 3 years prior to current fiscal year	620,787	441,137
Origination year - 4 years prior to current fiscal year	314,461	481,522
Origination year - more than 4 years prior to current fiscal year	810,915	677,902
Revolving Loans Amortized Cost Basis	1,745,319	1,620,975
Revolving Loans Amortized Cost Basis Converted to Term	13,145	14,759
Loans receivable, net	5,987,653	5,732,225
Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	0	0
Origination year - 1 year prior to current fiscal year	5,246	4,746
Origination year - 2 years prior to current fiscal year	30,931	15,574
Origination year - 3 years prior to current fiscal year	20,551	8,886
Origination year - 4 years prior to current fiscal year	12,672	16,369
Origination year - more than 4 years prior to current fiscal year	69,815	23,192
Revolving Loans Amortized Cost Basis	18,575	6,446
Revolving Loans Amortized Cost Basis Converted to Term	7,139	231
Loans receivable, net	164,929	75,444
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	0	0
Origination year - 1 year prior to current fiscal year	0	14,094
Origination year - 2 years prior to current fiscal year	3,584	6,753
Origination year - 3 years prior to current fiscal year	11,762	7,016
Origination year - 4 years prior to current fiscal year	5,338	5,660
Origination year - more than 4 years prior to current fiscal year	46,117	38,109
Revolving Loans Amortized Cost Basis	3,777	13,098
Revolving Loans Amortized Cost Basis Converted to Term	3,378	5,525
Loans receivable, net	73,956	90,255
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	0	0
Origination year - 1 year prior to current fiscal year	0	0
Origination year - 2 years prior to current fiscal year	0	390
Origination year - 3 years prior to current fiscal year	0	0
Origination year - 4 years prior to current fiscal year	0	0
Origination year - more than 4 years prior to current fiscal year	1,777	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Amortized Cost Basis Converted to Term	260	91
Loans receivable, net	2,037	481
Commercial | Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	146,752	99,015
Origination year - 1 year prior to current fiscal year	73,379	93,648
Origination year - 2 years prior to current fiscal year	81,760	79,258
Origination year - 3 years prior to current fiscal year	69,770	65,390
Origination year - 4 years prior to current fiscal year	57,237	46,110
Origination year - more than 4 years prior to current fiscal year	117,726	103,664
Revolving Loans Amortized Cost Basis	1,729,859	1,586,357
Revolving Loans Amortized Cost Basis Converted to Term	20,143	14,866
Loans receivable, net	2,296,626	2,088,308
Commercial | Commercial and industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	146,752	99,015
Origination year - 1 year prior to current fiscal year	70,137	78,783
Origination year - 2 years prior to current fiscal year	64,881	70,248
Origination year - 3 years prior to current fiscal year	61,184	52,786
Origination year - 4 years prior to current fiscal year	45,261	44,536
Origination year - more than 4 years prior to current fiscal year	99,395	92,129
Revolving Loans Amortized Cost Basis	1,712,167	1,572,259
Revolving Loans Amortized Cost Basis Converted to Term	10,548	9,945
Loans receivable, net	2,210,325	2,019,701
Commercial | Commercial and industrial | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	0	0
Origination year - 1 year prior to current fiscal year	3,242	928
Origination year - 2 years prior to current fiscal year	13,803	2,748
Origination year - 3 years prior to current fiscal year	3,617	7,986
Origination year - 4 years prior to current fiscal year	11,976	1,574
Origination year - more than 4 years prior to current fiscal year	8,690	2,271
Revolving Loans Amortized Cost Basis	14,498	1,500
Revolving Loans Amortized Cost Basis Converted to Term	7,135	225
Loans receivable, net	62,961	17,232
Commercial | Commercial and industrial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	0	0
Origination year - 1 year prior to current fiscal year	0	13,937
Origination year - 2 years prior to current fiscal year	3,076	6,262
Origination year - 3 years prior to current fiscal year	4,969	4,618
Origination year - 4 years prior to current fiscal year	0	0
Origination year - more than 4 years prior to current fiscal year	9,641	9,264
Revolving Loans Amortized Cost Basis	3,194	12,598
Revolving Loans Amortized Cost Basis Converted to Term	2,460	4,696
Loans receivable, net	23,340	51,375
Commercial | Commercial and industrial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	0	0
Origination year - 1 year prior to current fiscal year	0	0
Origination year - 2 years prior to current fiscal year	0	0
Origination year - 3 years prior to current fiscal year	0	0
Origination year - 4 years prior to current fiscal year	0	0
Origination year - more than 4 years prior to current fiscal year	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Amortized Cost Basis Converted to Term	0	0
Loans receivable, net	0	0
Commercial | Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	255,677	75,432
Origination year - 1 year prior to current fiscal year	57,232	150,731
Origination year - 2 years prior to current fiscal year	133,394	202,283
Origination year - 3 years prior to current fiscal year	163,289	63,144
Origination year - 4 years prior to current fiscal year	54,060	93,972
Origination year - more than 4 years prior to current fiscal year	237,629	213,608
Revolving Loans Amortized Cost Basis	5,870	6,443
Revolving Loans Amortized Cost Basis Converted to Term	73	1,582
Loans receivable, net	907,224	807,195
Commercial | Commercial real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	255,677	75,432
Origination year - 1 year prior to current fiscal year	57,232	150,731
Origination year - 2 years prior to current fiscal year	132,886	192,831
Origination year - 3 years prior to current fiscal year	161,355	63,144
Origination year - 4 years prior to current fiscal year	54,060	91,454
Origination year - more than 4 years prior to current fiscal year	213,050	182,756
Revolving Loans Amortized Cost Basis	2,108	2,682
Revolving Loans Amortized Cost Basis Converted to Term	73	1,582
Loans receivable, net	876,441	760,612
Commercial | Commercial real estate | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	0	0
Origination year - 1 year prior to current fiscal year	0	0
Origination year - 2 years prior to current fiscal year	0	9,452
Origination year - 3 years prior to current fiscal year	1,934	0
Origination year - 4 years prior to current fiscal year	0	2,518
Origination year - more than 4 years prior to current fiscal year	10,999	14,754
Revolving Loans Amortized Cost Basis	3,762	3,761
Revolving Loans Amortized Cost Basis Converted to Term	0	0
Loans receivable, net	16,695	30,485
Commercial | Commercial real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	0	0
Origination year - 1 year prior to current fiscal year	0	0
Origination year - 2 years prior to current fiscal year	508	0
Origination year - 3 years prior to current fiscal year	0	0
Origination year - 4 years prior to current fiscal year	0	0
Origination year - more than 4 years prior to current fiscal year	13,580	16,098
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Amortized Cost Basis Converted to Term	0	0
Loans receivable, net	14,088	16,098
Commercial | Commercial real estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	0	0
Origination year - 1 year prior to current fiscal year	0	0
Origination year - 2 years prior to current fiscal year	0	0
Origination year - 3 years prior to current fiscal year	0	0
Origination year - 4 years prior to current fiscal year	0	0
Origination year - more than 4 years prior to current fiscal year	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Amortized Cost Basis Converted to Term	0	0
Loans receivable, net	0	0
Commercial | Multifamily
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	280,570	239,449
Origination year - 1 year prior to current fiscal year	211,595	409,582
Origination year - 2 years prior to current fiscal year	310,409	275,881
Origination year - 3 years prior to current fiscal year	229,784	110,105
Origination year - 4 years prior to current fiscal year	78,659	97,160
Origination year - more than 4 years prior to current fiscal year	184,489	157,616
Revolving Loans Amortized Cost Basis	107	27
Revolving Loans Amortized Cost Basis Converted to Term	0	0
Loans receivable, net	1,295,613	1,289,820
Commercial | Multifamily | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	280,570	239,449
Origination year - 1 year prior to current fiscal year	209,591	407,532
Origination year - 2 years prior to current fiscal year	295,012	275,881
Origination year - 3 years prior to current fiscal year	218,476	110,105
Origination year - 4 years prior to current fiscal year	78,659	97,160
Origination year - more than 4 years prior to current fiscal year	148,610	154,841
Revolving Loans Amortized Cost Basis	107	27
Revolving Loans Amortized Cost Basis Converted to Term	0	0
Loans receivable, net	1,231,025	1,284,995
Commercial | Multifamily | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	0	0
Origination year - 1 year prior to current fiscal year	2,004	2,050
Origination year - 2 years prior to current fiscal year	15,397	0
Origination year - 3 years prior to current fiscal year	11,308	0
Origination year - 4 years prior to current fiscal year	0	0
Origination year - more than 4 years prior to current fiscal year	33,949	803
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Amortized Cost Basis Converted to Term	0	0
Loans receivable, net	62,658	2,853
Commercial | Multifamily | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	0	0
Origination year - 1 year prior to current fiscal year	0	0
Origination year - 2 years prior to current fiscal year	0	0
Origination year - 3 years prior to current fiscal year	0	0
Origination year - 4 years prior to current fiscal year	0	0
Origination year - more than 4 years prior to current fiscal year	1,930	1,972
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Amortized Cost Basis Converted to Term	0	0
Loans receivable, net	1,930	1,972
Commercial | Multifamily | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	0	0
Origination year - 1 year prior to current fiscal year	0	0
Origination year - 2 years prior to current fiscal year	0	0
Origination year - 3 years prior to current fiscal year	0	0
Origination year - 4 years prior to current fiscal year	0	0
Origination year - more than 4 years prior to current fiscal year	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Amortized Cost Basis Converted to Term	0	0
Loans receivable, net	0	0
Commercial | SBA
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	101,405	211,962
Origination year - 1 year prior to current fiscal year	30,143	15,850
Origination year - 2 years prior to current fiscal year	9,286	1,650
Origination year - 3 years prior to current fiscal year	1,539	5,277
Origination year - 4 years prior to current fiscal year	7,139	12,184
Origination year - more than 4 years prior to current fiscal year	29,725	21,318
Revolving Loans Amortized Cost Basis	860	3,337
Revolving Loans Amortized Cost Basis Converted to Term	1,485	1,866
Loans receivable, net	181,582	273,444
Commercial | SBA | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	101,405	211,962
Origination year - 1 year prior to current fiscal year	30,143	14,082
Origination year - 2 years prior to current fiscal year	7,555	1,260
Origination year - 3 years prior to current fiscal year	249	3,746
Origination year - 4 years prior to current fiscal year	3,508	11,087
Origination year - more than 4 years prior to current fiscal year	19,750	18,589
Revolving Loans Amortized Cost Basis	358	3,111
Revolving Loans Amortized Cost Basis Converted to Term	303	1,014
Loans receivable, net	163,271	264,851
Commercial | SBA | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	0	0
Origination year - 1 year prior to current fiscal year	0	1,768
Origination year - 2 years prior to current fiscal year	1,731	0
Origination year - 3 years prior to current fiscal year	900	212
Origination year - 4 years prior to current fiscal year	0	415
Origination year - more than 4 years prior to current fiscal year	1,181	874
Revolving Loans Amortized Cost Basis	255	0
Revolving Loans Amortized Cost Basis Converted to Term	4	6
Loans receivable, net	4,071	3,275
Commercial | SBA | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	0	0
Origination year - 1 year prior to current fiscal year	0	0
Origination year - 2 years prior to current fiscal year	0	0
Origination year - 3 years prior to current fiscal year	390	1,319
Origination year - 4 years prior to current fiscal year	3,631	682
Origination year - more than 4 years prior to current fiscal year	7,017	1,855
Revolving Loans Amortized Cost Basis	247	226
Revolving Loans Amortized Cost Basis Converted to Term	918	755
Loans receivable, net	12,203	4,837
Commercial | SBA | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	0	0
Origination year - 1 year prior to current fiscal year	0	0
Origination year - 2 years prior to current fiscal year	0	390
Origination year - 3 years prior to current fiscal year	0	0
Origination year - 4 years prior to current fiscal year	0	0
Origination year - more than 4 years prior to current fiscal year	1,777	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Amortized Cost Basis Converted to Term	260	91
Loans receivable, net	2,037	481
Commercial | Construction
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	24,867	41,677
Origination year - 1 year prior to current fiscal year	30,494	30,387
Origination year - 2 years prior to current fiscal year	19,184	46,934
Origination year - 3 years prior to current fiscal year	18,231	50,024
Origination year - 4 years prior to current fiscal year	29,622	6,994
Origination year - more than 4 years prior to current fiscal year	8,138	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Amortized Cost Basis Converted to Term	0	0
Loans receivable, net	130,536	176,016
Commercial | Construction | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	24,867	41,677
Origination year - 1 year prior to current fiscal year	30,494	30,387
Origination year - 2 years prior to current fiscal year	19,184	45,397
Origination year - 3 years prior to current fiscal year	16,694	50,024
Origination year - 4 years prior to current fiscal year	29,622	0
Origination year - more than 4 years prior to current fiscal year	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Amortized Cost Basis Converted to Term	0	0
Loans receivable, net	120,861	167,485
Commercial | Construction | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	0	0
Origination year - 1 year prior to current fiscal year	0	0
Origination year - 2 years prior to current fiscal year	0	1,537
Origination year - 3 years prior to current fiscal year	1,537	0
Origination year - 4 years prior to current fiscal year	0	6,994
Origination year - more than 4 years prior to current fiscal year	8,138	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Amortized Cost Basis Converted to Term	0	0
Loans receivable, net	9,675	8,531
Commercial | Construction | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	0	0
Origination year - 1 year prior to current fiscal year	0	0
Origination year - 2 years prior to current fiscal year	0	0
Origination year - 3 years prior to current fiscal year	0	0
Origination year - 4 years prior to current fiscal year	0	0
Origination year - more than 4 years prior to current fiscal year	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Amortized Cost Basis Converted to Term	0	0
Loans receivable, net	0	0
Commercial | Construction | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	0	0
Origination year - 1 year prior to current fiscal year	0	0
Origination year - 2 years prior to current fiscal year	0	0
Origination year - 3 years prior to current fiscal year	0	0
Origination year - 4 years prior to current fiscal year	0	0
Origination year - more than 4 years prior to current fiscal year	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Amortized Cost Basis Converted to Term	0	0
Loans receivable, net	0	0
Consumer | Single family residential mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	550,466	149,382
Origination year - 1 year prior to current fiscal year	125,669	140,286
Origination year - 2 years prior to current fiscal year	79,395	273,995
Origination year - 3 years prior to current fiscal year	170,479	163,099
Origination year - 4 years prior to current fiscal year	105,754	247,131
Origination year - more than 4 years prior to current fiscal year	349,137	241,091
Revolving Loans Amortized Cost Basis	12,796	15,252
Revolving Loans Amortized Cost Basis Converted to Term	0	0
Loans receivable, net	1,393,696	1,230,236
Consumer | Single family residential mortgage | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	550,466	149,382
Origination year - 1 year prior to current fiscal year	125,669	140,129
Origination year - 2 years prior to current fiscal year	79,395	271,667
Origination year - 3 years prior to current fiscal year	162,821	161,332
Origination year - 4 years prior to current fiscal year	103,351	237,285
Origination year - more than 4 years prior to current fiscal year	328,357	227,711
Revolving Loans Amortized Cost Basis	12,557	15,252
Revolving Loans Amortized Cost Basis Converted to Term	0	0
Loans receivable, net	1,362,616	1,202,758
Consumer | Single family residential mortgage | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	0	0
Origination year - 1 year prior to current fiscal year	0	0
Origination year - 2 years prior to current fiscal year	0	1,837
Origination year - 3 years prior to current fiscal year	1,255	688
Origination year - 4 years prior to current fiscal year	696	4,868
Origination year - more than 4 years prior to current fiscal year	6,831	4,460
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Amortized Cost Basis Converted to Term	0	0
Loans receivable, net	8,782	11,853
Consumer | Single family residential mortgage | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	0	0
Origination year - 1 year prior to current fiscal year	0	157
Origination year - 2 years prior to current fiscal year	0	491
Origination year - 3 years prior to current fiscal year	6,403	1,079
Origination year - 4 years prior to current fiscal year	1,707	4,978
Origination year - more than 4 years prior to current fiscal year	13,949	8,920
Revolving Loans Amortized Cost Basis	239	0
Revolving Loans Amortized Cost Basis Converted to Term	0	0
Loans receivable, net	22,298	15,625
Consumer | Single family residential mortgage | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	0	0
Origination year - 1 year prior to current fiscal year	0	0
Origination year - 2 years prior to current fiscal year	0	0
Origination year - 3 years prior to current fiscal year	0	0
Origination year - 4 years prior to current fiscal year	0	0
Origination year - more than 4 years prior to current fiscal year	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Amortized Cost Basis Converted to Term	0	0
Loans receivable, net	0	0
Consumer | Other consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	1,110	38
Origination year - 1 year prior to current fiscal year	0	0
Origination year - 2 years prior to current fiscal year	0	47
Origination year - 3 years prior to current fiscal year	8	0
Origination year - 4 years prior to current fiscal year	0	0
Origination year - more than 4 years prior to current fiscal year	1,780	1,906
Revolving Loans Amortized Cost Basis	18,179	29,103
Revolving Loans Amortized Cost Basis Converted to Term	2,221	2,292
Loans receivable, net	23,298	33,386
Consumer | Other consumer | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	1,110	38
Origination year - 1 year prior to current fiscal year	0	0
Origination year - 2 years prior to current fiscal year	0	47
Origination year - 3 years prior to current fiscal year	8	0
Origination year - 4 years prior to current fiscal year	0	0
Origination year - more than 4 years prior to current fiscal year	1,753	1,876
Revolving Loans Amortized Cost Basis	18,022	27,644
Revolving Loans Amortized Cost Basis Converted to Term	2,221	2,218
Loans receivable, net	23,114	31,823
Consumer | Other consumer | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	0	0
Origination year - 1 year prior to current fiscal year	0	0
Origination year - 2 years prior to current fiscal year	0	0
Origination year - 3 years prior to current fiscal year	0	0
Origination year - 4 years prior to current fiscal year	0	0
Origination year - more than 4 years prior to current fiscal year	27	30
Revolving Loans Amortized Cost Basis	60	1,185
Revolving Loans Amortized Cost Basis Converted to Term	0	0
Loans receivable, net	87	1,215
Consumer | Other consumer | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	0	0
Origination year - 1 year prior to current fiscal year	0	0
Origination year - 2 years prior to current fiscal year	0	0
Origination year - 3 years prior to current fiscal year	0	0
Origination year - 4 years prior to current fiscal year	0	0
Origination year - more than 4 years prior to current fiscal year	0	0
Revolving Loans Amortized Cost Basis	97	274
Revolving Loans Amortized Cost Basis Converted to Term	0	74
Loans receivable, net	97	348
Consumer | Other consumer | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - current fiscal year	0	0
Origination year - 1 year prior to current fiscal year	0	0
Origination year - 2 years prior to current fiscal year	0	0
Origination year - 3 years prior to current fiscal year	0	0
Origination year - 4 years prior to current fiscal year	0	0
Origination year - more than 4 years prior to current fiscal year	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Amortized Cost Basis Converted to Term	0	0
Loans receivable, net	$ 0	$ 0

LOANS AND ALLOWANCE FOR CREDI_6

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Aging of Recorded Investment in Past Due Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Loans receivable	$ 6,228,575	$ 5,898,405
30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	18,332	11,673
60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	4,812	2,308
Greater than 89 Days Past due
Financing Receivable, Past Due [Line Items]
Loans receivable	21,979	17,636
Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	45,123	31,617
Current
Financing Receivable, Past Due [Line Items]
Loans receivable	6,183,452	5,866,788
Traditional Loans
Financing Receivable, Past Due [Line Items]
Loans receivable	5,657,197	5,461,292
Traditional Loans | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	11,234	7,473
Traditional Loans | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	4,812	1,667
Traditional Loans | Greater than 89 Days Past due
Financing Receivable, Past Due [Line Items]
Loans receivable	19,572	11,088
Traditional Loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	35,618	20,228
Traditional Loans | Current
Financing Receivable, Past Due [Line Items]
Loans receivable	5,621,579	5,441,064
Consumer | Single family residential mortgage
Financing Receivable, Past Due [Line Items]
Loans receivable	1,393,696	1,230,236
Consumer | Other consumer
Financing Receivable, Past Due [Line Items]
Loans receivable	23,298	33,386
Consumer | Non-traditional Mortgage (NTM) Loans
Financing Receivable, Past Due [Line Items]
Loans receivable	571,378	437,113
Consumer | Non-traditional Mortgage (NTM) Loans | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	7,098	4,200
Consumer | Non-traditional Mortgage (NTM) Loans | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	641
Consumer | Non-traditional Mortgage (NTM) Loans | Greater than 89 Days Past due
Financing Receivable, Past Due [Line Items]
Loans receivable	2,407	6,548
Consumer | Non-traditional Mortgage (NTM) Loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	9,505	11,389
Consumer | Non-traditional Mortgage (NTM) Loans | Current
Financing Receivable, Past Due [Line Items]
Loans receivable	561,873	425,724
Consumer | Non-traditional Mortgage (NTM) Loans | Single family residential mortgage
Financing Receivable, Past Due [Line Items]
Loans receivable	569,781	435,515
Consumer | Non-traditional Mortgage (NTM) Loans | Single family residential mortgage | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	7,098	4,200
Consumer | Non-traditional Mortgage (NTM) Loans | Single family residential mortgage | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	641
Consumer | Non-traditional Mortgage (NTM) Loans | Single family residential mortgage | Greater than 89 Days Past due
Financing Receivable, Past Due [Line Items]
Loans receivable	2,407	6,548
Consumer | Non-traditional Mortgage (NTM) Loans | Single family residential mortgage | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	9,505	11,389
Consumer | Non-traditional Mortgage (NTM) Loans | Single family residential mortgage | Current
Financing Receivable, Past Due [Line Items]
Loans receivable	560,276	424,126
Consumer | Non-traditional Mortgage (NTM) Loans | Other consumer
Financing Receivable, Past Due [Line Items]
Loans receivable	1,597	1,598
Consumer | Non-traditional Mortgage (NTM) Loans | Other consumer | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Consumer | Non-traditional Mortgage (NTM) Loans | Other consumer | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Consumer | Non-traditional Mortgage (NTM) Loans | Other consumer | Greater than 89 Days Past due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Consumer | Non-traditional Mortgage (NTM) Loans | Other consumer | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Consumer | Non-traditional Mortgage (NTM) Loans | Other consumer | Current
Financing Receivable, Past Due [Line Items]
Loans receivable	1,597	1,598
Consumer | Traditional Loans | Single family residential mortgage
Financing Receivable, Past Due [Line Items]
Loans receivable	823,915	794,721
Consumer | Traditional Loans | Single family residential mortgage | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	4,274	6,836
Consumer | Traditional Loans | Single family residential mortgage | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	1,016	980
Consumer | Traditional Loans | Single family residential mortgage | Greater than 89 Days Past due
Financing Receivable, Past Due [Line Items]
Loans receivable	4,311	3,742
Consumer | Traditional Loans | Single family residential mortgage | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	9,601	11,558
Consumer | Traditional Loans | Single family residential mortgage | Current
Financing Receivable, Past Due [Line Items]
Loans receivable	814,314	783,163
Consumer | Traditional Loans | Other consumer
Financing Receivable, Past Due [Line Items]
Loans receivable	21,701	31,788
Consumer | Traditional Loans | Other consumer | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	216
Consumer | Traditional Loans | Other consumer | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	61
Consumer | Traditional Loans | Other consumer | Greater than 89 Days Past due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Consumer | Traditional Loans | Other consumer | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	277
Consumer | Traditional Loans | Other consumer | Current
Financing Receivable, Past Due [Line Items]
Loans receivable	21,701	31,511
Commercial | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans receivable	2,296,626	2,088,308
Commercial | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans receivable	907,224	807,195
Commercial | Multifamily
Financing Receivable, Past Due [Line Items]
Loans receivable	1,295,613	1,289,820
Commercial | SBA
Financing Receivable, Past Due [Line Items]
Loans receivable	181,582	273,444
Commercial | Construction
Financing Receivable, Past Due [Line Items]
Loans receivable	130,536	176,016
Commercial | Traditional Loans | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Loans receivable	2,296,626	2,088,308
Commercial | Traditional Loans | Commercial and industrial | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	3,624	67
Commercial | Traditional Loans | Commercial and industrial | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	3,796	0
Commercial | Traditional Loans | Commercial and industrial | Greater than 89 Days Past due
Financing Receivable, Past Due [Line Items]
Loans receivable	2,876	4,284
Commercial | Traditional Loans | Commercial and industrial | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	10,296	4,351
Commercial | Traditional Loans | Commercial and industrial | Current
Financing Receivable, Past Due [Line Items]
Loans receivable	2,286,330	2,083,957
Commercial | Traditional Loans | Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans receivable	907,224	807,195
Commercial | Traditional Loans | Commercial real estate | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Commercial | Traditional Loans | Commercial real estate | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Commercial | Traditional Loans | Commercial real estate | Greater than 89 Days Past due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Commercial | Traditional Loans | Commercial real estate | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Commercial | Traditional Loans | Commercial real estate | Current
Financing Receivable, Past Due [Line Items]
Loans receivable	907,224	807,195
Commercial | Traditional Loans | Multifamily
Financing Receivable, Past Due [Line Items]
Loans receivable	1,295,613	1,289,820
Commercial | Traditional Loans | Multifamily | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	791	0
Commercial | Traditional Loans | Multifamily | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Commercial | Traditional Loans | Multifamily | Greater than 89 Days Past due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Commercial | Traditional Loans | Multifamily | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	791	0
Commercial | Traditional Loans | Multifamily | Current
Financing Receivable, Past Due [Line Items]
Loans receivable	1,294,822	1,289,820
Commercial | Traditional Loans | SBA
Financing Receivable, Past Due [Line Items]
Loans receivable	181,582	273,444
Commercial | Traditional Loans | SBA | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	2,545	354
Commercial | Traditional Loans | SBA | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	626
Commercial | Traditional Loans | SBA | Greater than 89 Days Past due
Financing Receivable, Past Due [Line Items]
Loans receivable	12,385	3,062
Commercial | Traditional Loans | SBA | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	14,930	4,042
Commercial | Traditional Loans | SBA | Current
Financing Receivable, Past Due [Line Items]
Loans receivable	166,652	269,402
Commercial | Traditional Loans | Construction
Financing Receivable, Past Due [Line Items]
Loans receivable	130,536	176,016
Commercial | Traditional Loans | Construction | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Commercial | Traditional Loans | Construction | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Commercial | Traditional Loans | Construction | Greater than 89 Days Past due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Commercial | Traditional Loans | Construction | Total Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable	0	0
Commercial | Traditional Loans | Construction | Current
Financing Receivable, Past Due [Line Items]
Loans receivable	$ 130,536	$ 176,016

LOANS AND ALLOWANCE FOR CREDI_7

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Composition of Nonaccrual Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	$ 45,621	$ 35,900
Nonaccrual Loans with no ACL	35,472	32,066
NTM Loans
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	6,644	8,697
Traditional Loans
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	38,977	27,203
Commercial | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	11,834	13,821
Nonaccrual Loans with no ACL	11,834	13,088
Commercial | Commercial real estate
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	4,419	4,654
Nonaccrual Loans with no ACL	4,419	4,654
Commercial | SBA
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	12,824	3,749
Nonaccrual Loans with no ACL	5,204	648
Commercial | NTM Loans | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	0	0
Commercial | NTM Loans | Commercial real estate
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	0	0
Commercial | NTM Loans | SBA
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	0	0
Commercial | Traditional Loans | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	11,834	13,821
Commercial | Traditional Loans | Commercial real estate
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	4,419	4,654
Commercial | Traditional Loans | SBA
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	12,824	3,749
Consumer | Single family residential mortgage
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	16,544	13,519
Nonaccrual Loans with no ACL	14,015	13,519
Consumer | Other consumer
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	0	157
Nonaccrual Loans with no ACL	0	157
Consumer | NTM Loans | Single family residential mortgage
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	6,644	8,697
Consumer | NTM Loans | Other consumer
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	0	0
Consumer | Traditional Loans | Single family residential mortgage
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	9,900	4,822
Consumer | Traditional Loans | Other consumer
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	$ 0	$ 157

LOANS AND ALLOWANCE FOR CREDI_8

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Nonaccrual Loans and Leases Additional Information (Details)	3 Months Ended			9 Months Ended
	Sep. 30, 2021USD ($)loan	Jun. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)loan	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)loan
Financing Receivable, Past Due [Line Items]
Loans 90 days past due and still accruing	$ 0			$ 0		$ 728,000
Loans on non-accrual status	45,621,000			45,621,000		35,900,000
Transfer from loans to other real estate owned, net				3,253,000	$ 1,116,000
Loans sold	0		$ 0	0	0
Net gain on sale of loans	0	$ 0	272,000	0	245,000
Single family residential mortgage
Financing Receivable, Past Due [Line Items]
Other real estate owned, net	0			0		0
Transfer from loans to other real estate owned, net	1,000		1,000	1,000	1,000
Loans sold	3,300,000		1,100,000	3,300,000	1,100,000
Net gain on sale of loans	365,000		$ 38,000	365,000	$ 38,000
Consumer | Single family residential mortgage
Financing Receivable, Past Due [Line Items]
Loans on non-accrual status	$ 16,544,000			$ 16,544,000		$ 13,519,000
Number of loans in process of foreclosure | loan	1			1		0
Loans in process of foreclosure	$ 2,500,000			$ 2,500,000		$ 0
NTM Loans
Financing Receivable, Past Due [Line Items]
Loans on non-accrual status	6,644,000			6,644,000		8,697,000
NTM Loans | Consumer | Single family residential mortgage
Financing Receivable, Past Due [Line Items]
Loans on non-accrual status	6,644,000			6,644,000		8,697,000
NTM Loans | Green Loans | Non-performing Loans | Consumer
Financing Receivable, Past Due [Line Items]
Loans on non-accrual status	3,300,000			3,300,000		4,000,000
Green Loans (HELOC) - first liens | NTM Loans | Interest Only Loans | Non-performing Loans | Consumer
Financing Receivable, Past Due [Line Items]
Loans on non-accrual status	$ 3,300,000			$ 3,300,000		$ 4,700,000

LOANS AND ALLOWANCE FOR CREDI_9

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Allowance for Credit Losses Additional Information (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unfunded loan commitments	$ 73,524	$ 81,030
Loans Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrued interest receivable on loans receivable	23,800	24,700
Unfunded Loan Commitment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unfunded loan commitments	$ 5,200	$ 3,200

LOANS AND ALLOWANCE FOR CRED_10

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period				$ 81,030
(Reversal of) provision for credit losses	$ (1,147)	$ (2,154)	$ 1,141	(4,408)	$ 28,728
Balance at end of period	73,524			73,524
Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	79,699		94,565	84,213	61,713
Loans charged off	(327)		(1,821)	(1,778)	(3,897)
Recoveries of loans previously charged off	532		248	730	1,206
Net recoveries (charge-offs)	205		(1,573)	(1,048)	(2,691)
(Reversal of) provision for credit losses	(1,147)		1,141	(4,408)	28,728
Balance at end of period	78,757	79,699	94,133	78,757	94,133
Impact of adopting ASU 2016-13 | Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period				0	6,383
Allowance for Loan Losses
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	75,885		90,370	81,030	57,649
Loans charged off	(327)		(1,821)	(1,778)	(3,897)
Recoveries of loans previously charged off	532		248	730	1,206
Net recoveries (charge-offs)	205		(1,573)	(1,048)	(2,691)
(Reversal of) provision for credit losses	(2,566)		2,130	(6,458)	28,360
Balance at end of period	73,524	75,885	90,927	73,524	90,927
Allowance for Loan Losses | Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	75,885		90,370	81,030	57,649
Loans charged off	(327)		(1,821)	(1,778)	(3,897)
Recoveries of loans previously charged off	532		248	730	1,206
Net recoveries (charge-offs)	205		(1,573)	(1,048)	(2,691)
(Reversal of) provision for credit losses	(2,566)		2,130	(6,458)	28,360
Balance at end of period	73,524	75,885	90,927	73,524	90,927
Allowance for Loan Losses | Impact of adopting ASU 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period					7,609
Allowance for Loan Losses | Impact of adopting ASU 2016-13 | Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period				0	7,609
Reserve for Unfunded Loan Commitments | Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	3,814		4,195	3,183	4,064
Loans charged off	0		0	0	0
Recoveries of loans previously charged off	0		0	0	0
Net recoveries (charge-offs)	0		0	0	0
(Reversal of) provision for credit losses	1,419		(989)	2,050	368
Balance at end of period	$ 5,233	$ 3,814	$ 3,206	5,233	3,206
Reserve for Unfunded Loan Commitments | Impact of adopting ASU 2016-13 | Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period				$ 0	$ (1,226)

LOANS AND ALLOWANCE FOR CRED_11

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Allowance for Credit Losses and Recorded Investment Excluding Accrued Interest in Loans (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period				$ 81,030
(Reversal of) provision for credit losses - loans	$ (1,147)	$ (2,154)	$ 1,141	(4,408)	$ 28,728
Balance at end of period	73,524			73,524
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	79,699		94,565	84,213	61,713
Loans charged off	(327)		(1,821)	(1,778)	(3,897)
Recoveries of loans previously charged off	532		248	730	1,206
Net recoveries (charge-offs)	205		(1,573)	(1,048)	(2,691)
(Reversal of) provision for credit losses - loans	(1,147)		1,141	(4,408)	28,728
Balance at end of period	78,757	79,699	94,133	78,757	94,133
Allowance for Loan Losses
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	75,885		90,370	81,030	57,649
Loans charged off	(327)		(1,821)	(1,778)	(3,897)
Recoveries of loans previously charged off	532		248	730	1,206
Net recoveries (charge-offs)	205		(1,573)	(1,048)	(2,691)
(Reversal of) provision for credit losses - loans	(2,566)		2,130	(6,458)	28,360
Balance at end of period	73,524	75,885	90,927	73,524	90,927
Allowance for Loan Losses | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	75,885		90,370	81,030	57,649
Loans charged off	(327)		(1,821)	(1,778)	(3,897)
Recoveries of loans previously charged off	532		248	730	1,206
Net recoveries (charge-offs)	205		(1,573)	(1,048)	(2,691)
(Reversal of) provision for credit losses - loans	(2,566)		2,130	(6,458)	28,360
Balance at end of period	73,524	75,885	90,927	73,524	90,927
Allowance for Loan Losses | Commercial | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	20,156		26,618	20,608	22,353
Loans charged off	(115)		(1,597)	(1,180)	(2,761)
Recoveries of loans previously charged off	484		116	553	265
Net recoveries (charge-offs)	369		(1,481)	(627)	(2,496)
(Reversal of) provision for credit losses - loans	(270)		1,454	274	6,072
Balance at end of period	20,255	20,156	26,591	20,255	26,591
Allowance for Loan Losses | Commercial | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	16,424		17,372	19,074	5,941
Loans charged off	(138)		0	(138)	0
Recoveries of loans previously charged off	0		0	0	0
Net recoveries (charge-offs)	(138)		0	(138)	0
(Reversal of) provision for credit losses - loans	(269)		2,001	(2,919)	8,585
Balance at end of period	16,017	16,424	19,373	16,017	19,373
Allowance for Loan Losses | Commercial | Multifamily
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	21,403		25,105	22,512	11,405
Loans charged off	0		0	0	0
Recoveries of loans previously charged off	0		0	0	0
Net recoveries (charge-offs)	0		0	0	0
(Reversal of) provision for credit losses - loans	(2,678)		454	(3,787)	12,345
Balance at end of period	18,725	21,403	25,559	18,725	25,559
Allowance for Loan Losses | Commercial | SBA
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	3,696		4,184	3,145	3,120
Loans charged off	(74)		(224)	(460)	(580)
Recoveries of loans previously charged off	1		132	130	253
Net recoveries (charge-offs)	(73)		(92)	(330)	(327)
(Reversal of) provision for credit losses - loans	1,112		(535)	1,920	376
Balance at end of period	4,735	3,696	3,557	4,735	3,557
Allowance for Loan Losses | Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	4,734		6,675	5,849	3,906
Loans charged off	0		0	0	0
Recoveries of loans previously charged off	0		0	0	0
Net recoveries (charge-offs)	0		0	0	0
(Reversal of) provision for credit losses - loans	(616)		(470)	(1,731)	2,196
Balance at end of period	4,118	4,734	6,205	4,118	6,205
Allowance for Loan Losses | Consumer | Single Family Residential Mortgage
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	9,108		9,665	9,191	10,486
Loans charged off	0		0	0	(552)
Recoveries of loans previously charged off	46		0	46	639
Net recoveries (charge-offs)	46		0	46	87
(Reversal of) provision for credit losses - loans	150		(689)	67	(1,177)
Balance at end of period	9,304	9,108	8,976	9,304	8,976
Allowance for Loan Losses | Consumer | Other Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	364		751	651	438
Loans charged off	0		0	0	(4)
Recoveries of loans previously charged off	1		0	1	49
Net recoveries (charge-offs)	1		0	1	45
(Reversal of) provision for credit losses - loans	5		(85)	(282)	(37)
Balance at end of period	$ 370	$ 364	$ 666	370	666
Impact of adopting ASU 2016-13 | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period				0	6,383
Impact of adopting ASU 2016-13 | Allowance for Loan Losses
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period					7,609
Impact of adopting ASU 2016-13 | Allowance for Loan Losses | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period				$ 0	7,609
Impact of adopting ASU 2016-13 | Allowance for Loan Losses | Commercial | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period					662
Impact of adopting ASU 2016-13 | Allowance for Loan Losses | Commercial | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period					4,847
Impact of adopting ASU 2016-13 | Allowance for Loan Losses | Commercial | Multifamily
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period					1,809
Impact of adopting ASU 2016-13 | Allowance for Loan Losses | Commercial | SBA
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period					388
Impact of adopting ASU 2016-13 | Allowance for Loan Losses | Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period					103
Impact of adopting ASU 2016-13 | Allowance for Loan Losses | Consumer | Single Family Residential Mortgage
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period					(420)
Impact of adopting ASU 2016-13 | Allowance for Loan Losses | Consumer | Other Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period					$ 220

LOANS AND ALLOWANCE FOR CRED_12

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Impaired [Line Items]
Collateral dependent loans	$ 48,933	$ 36,684
Commercial
Financing Receivable, Impaired [Line Items]
Collateral dependent loans	7,720	8,485
Residential
Financing Receivable, Impaired [Line Items]
Collateral dependent loans	28,323	20,484
Business Assets
Financing Receivable, Impaired [Line Items]
Collateral dependent loans	12,890	7,715
Commercial | Commercial and industrial
Financing Receivable, Impaired [Line Items]
Collateral dependent loans	9,545	10,457
Commercial | Commercial real estate
Financing Receivable, Impaired [Line Items]
Collateral dependent loans	4,419	4,654
Commercial | SBA
Financing Receivable, Impaired [Line Items]
Collateral dependent loans	12,777	3,596
Commercial | Commercial | Commercial and industrial
Financing Receivable, Impaired [Line Items]
Collateral dependent loans	5,121	5,492
Commercial | Commercial | Commercial real estate
Financing Receivable, Impaired [Line Items]
Collateral dependent loans	2,529	2,644
Commercial | Commercial | SBA
Financing Receivable, Impaired [Line Items]
Collateral dependent loans	70	349
Commercial | Residential | Commercial and industrial
Financing Receivable, Impaired [Line Items]
Collateral dependent loans	0	0
Commercial | Residential | Commercial real estate
Financing Receivable, Impaired [Line Items]
Collateral dependent loans	1,890	2,010
Commercial | Residential | SBA
Financing Receivable, Impaired [Line Items]
Collateral dependent loans	4,241	497
Commercial | Business Assets | Commercial and industrial
Financing Receivable, Impaired [Line Items]
Collateral dependent loans	4,424	4,965
Commercial | Business Assets | Commercial real estate
Financing Receivable, Impaired [Line Items]
Collateral dependent loans	0	0
Commercial | Business Assets | SBA
Financing Receivable, Impaired [Line Items]
Collateral dependent loans	8,466	2,750
Consumer | Single family residential mortgage
Financing Receivable, Impaired [Line Items]
Collateral dependent loans	22,192	17,820
Consumer | Other consumer
Financing Receivable, Impaired [Line Items]
Collateral dependent loans		157
Consumer | Commercial | Single family residential mortgage
Financing Receivable, Impaired [Line Items]
Collateral dependent loans	0	0
Consumer | Commercial | Other consumer
Financing Receivable, Impaired [Line Items]
Collateral dependent loans		0
Consumer | Residential | Single family residential mortgage
Financing Receivable, Impaired [Line Items]
Collateral dependent loans	22,192	17,820
Consumer | Residential | Other consumer
Financing Receivable, Impaired [Line Items]
Collateral dependent loans		157
Consumer | Business Assets | Single family residential mortgage
Financing Receivable, Impaired [Line Items]
Collateral dependent loans	$ 0	0
Consumer | Business Assets | Other consumer
Financing Receivable, Impaired [Line Items]
Collateral dependent loans		$ 0

LOANS AND ALLOWANCE FOR CRED_13

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Components of Troubled Debt Restructured Loans and Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	$ 8,201	$ 8,997
NTM Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	3,432	2,631
Traditional Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	4,769	6,366
Commercial | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	2,289	3,884
Commercial | SBA
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	264	265
Commercial | NTM Loans | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	0	0
Commercial | NTM Loans | SBA
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	0	0
Commercial | Traditional Loans | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	2,289	3,884
Commercial | Traditional Loans | SBA
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	264	265
Consumer | Single family residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	5,648	4,848
Consumer | Other consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	0	0
Consumer | NTM Loans | Single family residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	3,432	2,631
Consumer | NTM Loans | Other consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	0	0
Consumer | Traditional Loans | Single family residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	2,216	2,217
Consumer | Traditional Loans | Other consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructured loans and leases	$ 0	$ 0

LOANS AND ALLOWANCE FOR CRED_14

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Troubled Debt Restructurings Additional Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021USD ($)loan	Sep. 30, 2020loan	Sep. 30, 2021USD ($)loan	Sep. 30, 2020loan	Dec. 31, 2020USD ($)
Receivables [Abstract]
Commitments to lend to customers with outstanding loans classified as TDRs	$ 63		$ 63		$ 63
Accruing TDRs	5,800		5,800		4,700
Non-accruing TDRs	$ 2,400		$ 2,400		$ 4,300
Number of loans modified that had payments default during the period | loan	0	0	0	0

LOANS AND ALLOWANCE FOR CRED_15

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Loans by Class Modified as Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021USD ($)loan	Sep. 30, 2020USD ($)loan	Sep. 30, 2021USD ($)loan	Sep. 30, 2020USD ($)loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	0	1	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 1,800	$ 5,000
Consumer | Single family residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0		1
Pre-Modification Outstanding Recorded Investment	$ 0		$ 1,800
Post-Modification Outstanding Recorded Investment	$ 0		$ 1,800
Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan			1	1
Pre-Modification Outstanding Recorded Investment			$ 1,800	$ 5,000
Post-Modification Outstanding Recorded Investment			$ 1,800	$ 5,000
Commercial | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		0		1
Pre-Modification Outstanding Recorded Investment		$ 0		$ 5,000
Post-Modification Outstanding Recorded Investment		$ 0		$ 5,000

LOANS AND ALLOWANCE FOR CRED_16

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Summary of TDR Modification Type (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021USD ($)loan	Sep. 30, 2020USD ($)loan	Sep. 30, 2021USD ($)loan	Sep. 30, 2020USD ($)loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	0	1	1
Post-Modification Outstanding Recorded Investment | $	$ 0	$ 0	$ 1,800	$ 5,000
Extension of Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan			1	1
Post-Modification Outstanding Recorded Investment | $			$ 1,800	$ 5,000
Consumer | Single family residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0		1
Post-Modification Outstanding Recorded Investment | $	$ 0		$ 1,800
Consumer | Single family residential mortgage | Extension of Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan			1
Post-Modification Outstanding Recorded Investment | $			$ 1,800
Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan			1	1
Post-Modification Outstanding Recorded Investment | $			$ 1,800	$ 5,000
Commercial | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		0		1
Post-Modification Outstanding Recorded Investment | $		$ 0		$ 5,000
Commercial | Commercial and industrial | Extension of Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan				1
Post-Modification Outstanding Recorded Investment | $				$ 5,000

LOANS AND ALLOWANCE FOR CRED_17

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Purchases, Sales, and Transfers (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Receivables [Abstract]
Purchases of loans (excluding loans held-for-sale)	$ 249,400,000	$ 129,000,000	$ 615,400,000	$ 154,900,000
Transfers of loans from held-for-sale	0	0	0	0
Transfers of loans to held-for-sale	0	0	0	0
Loans sold	$ 0	$ 0	$ 0	$ 0

LOANS AND ALLOWANCE FOR CRED_18

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Non Traditional Mortgage Loans Additional Information (Details)	Sep. 30, 2021portfolio_product
NTM Loans | Interest-only
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of interest-only products	3

LOANS AND ALLOWANCE FOR CRED_19

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Non Traditional Mortgages Portfolio (Details) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021USD ($)loan	Dec. 31, 2020USD ($)loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 6,228,575	$ 5,898,405
NTM Loans | Loan Portfolio Concentration Risk | Loan Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk percentage (percent)	9.20%	7.40%
Consumer | NTM Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Count | loan	382	344
Loans receivable	$ 571,378	$ 437,113
Consumer | NTM Loans | Loan Portfolio Concentration Risk | Nontraditional Mortgage Loans Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk percentage (percent)	100.00%	100.00%
Consumer | NTM Loans | Green Loans (HELOC) - first liens
Accounts, Notes, Loans and Financing Receivable [Line Items]
Count | loan	377	339
Loans receivable	$ 569,781	$ 435,515
Consumer | NTM Loans | Green Loans (HELOC) - first liens | Loan Portfolio Concentration Risk | Nontraditional Mortgage Loans Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk percentage (percent)	99.70%	99.60%
Consumer | NTM Loans | Green Loans (HELOC) - first liens | Green Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Count | loan	36	48
Loans receivable	$ 25,074	$ 31,587
Consumer | NTM Loans | Green Loans (HELOC) - first liens | Green Loans | Loan Portfolio Concentration Risk | Nontraditional Mortgage Loans Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk percentage (percent)	4.40%	7.20%
Consumer | NTM Loans | Green Loans (HELOC) - first liens | Interest Only Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Count | loan	337	283
Loans receivable	$ 543,243	$ 401,640
Consumer | NTM Loans | Green Loans (HELOC) - first liens | Interest Only Loans | Loan Portfolio Concentration Risk | Nontraditional Mortgage Loans Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk percentage (percent)	95.10%	91.90%
Consumer | NTM Loans | Green Loans (HELOC) - first liens | Negative amortization
Accounts, Notes, Loans and Financing Receivable [Line Items]
Count | loan	4	8
Loans receivable	$ 1,464	$ 2,288
Consumer | NTM Loans | Green Loans (HELOC) - first liens | Negative amortization | Loan Portfolio Concentration Risk | Nontraditional Mortgage Loans Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk percentage (percent)	0.30%	0.50%
Consumer | NTM Loans | Green Loans (HELOC) - second liens
Accounts, Notes, Loans and Financing Receivable [Line Items]
Count | loan	5	5
Loans receivable	$ 1,597	$ 1,598
Consumer | NTM Loans | Green Loans (HELOC) - second liens | Loan Portfolio Concentration Risk | Nontraditional Mortgage Loans Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk percentage (percent)	0.30%	0.40%
Consumer | NTM Loans | Green Loans (HELOC) - second liens | Green Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Count | loan	5	5
Loans receivable	$ 1,597	$ 1,598
Consumer | NTM Loans | Green Loans (HELOC) - second liens | Green Loans | Loan Portfolio Concentration Risk | Nontraditional Mortgage Loans Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk percentage (percent)	0.30%	0.40%

GOODWILL AND OTHER INTANGIBLE_3

GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Additional Information (Details) - USD ($)	Oct. 01, 2020	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Goodwill		$ 37,144,000			$ 37,144,000		$ 37,144,000
Goodwill impairment	$ 0
Amortization of intangible assets		$ 282,000	$ 282,000	$ 353,000	$ 846,000	$ 1,212,000
Core Deposit Intangibles
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period					3 years 1 month 6 days
Core Deposit Intangibles | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization period of other intangible assets					4 years
Core Deposit Intangibles | Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization period of other intangible assets					10 years

GOODWILL AND OTHER INTANGIBLE_4

GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Other Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Net Carrying Value	$ 1,787
Core Deposit Intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	30,904	$ 30,904
Accumulated Amortization	29,117	28,271
Net Carrying Value	$ 1,787	$ 2,633

GOODWILL AND OTHER INTANGIBLE_5

GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Estimated Future Amortization Expense (Details) $ in Thousands	Sep. 30, 2021USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Remainder of 2021	$ 236
2022	799
2023	517
2024	235
Net Carrying Value	$ 1,787

FEDERAL HOME LOAN BANK ADVANC_3

FEDERAL HOME LOAN BANK ADVANCES AND OTHER BORROWINGS - Summary of Advances From the FHLB (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Fixed rate:
Outstanding balance	$ 411,000	$ 461,000
Variable rate:
Outstanding balance	$ 0	$ 85,000
Weighted average interest rate (percent)	0.00%	0.17%
Unamortized debt issuance costs	$ 5,300	$ 6,200
Advance Maturing May 27, 2021
Fixed rate:
Outstanding balance	$ 0	$ 5,000
Advances Maturing November 27, 2020 and May 27, 2021
Fixed rate:
Interest rate (percent)	0.00%	0.00%
Minimum
Fixed rate:
Interest rate (percent)	0.64%	0.00%
Maximum
Fixed rate:
Interest rate (percent)	3.32%	3.32%
Weighted average (percent)
Fixed rate:
Interest rate (percent)	2.53%	2.51%

FEDERAL HOME LOAN BANK ADVANC_4

FEDERAL HOME LOAN BANK ADVANCES AND OTHER BORROWINGS - Additional Information (Details)	3 Months Ended
	Sep. 30, 2021USD ($)correspondent_bank	Dec. 31, 2020USD ($)	Sep. 30, 2020USD ($)
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Overnight borrowings	$ 0
Term advances	$ 411,000,000
Weighted average life of advances maturing	4 years 2 months 12 days
Weighted average interest rate advances maturing (percent)	2.53%
Advances from FHLB collateralized	$ 2,090,000,000
Investment in capital stock of the federal reserve	$ 27,300,000	$ 27,300,000
Number of correspondent banks | correspondent_bank	5
Available capacity	$ 441,000,000	196,000,000
Other borrowings	100,000,000	0
Securities sold under repurchase agreements	0	0
Line of Credit | Unsecured Federal Funds Line of Credit
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Line of credit facility	210,000,000
Other borrowings	0
Federal Reserve Bank Advances
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Line of credit facility	349,300,000
Other borrowings	0		$ 0
Federal Reserve Bank Advances | Collateralized loan obligations
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Advances from FHLB collateralized	617,400,000
Collateral on line of credit facility	8,900,000
Federal Home Loan Bank of San Francisco
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Secured borrowing capacity from FHLB	1,630,000,000
Amount of additional available borrowing	894,900,000
FHLB stock	$ 17,300,000	$ 17,300,000

LONG-TERM DEBT - Summary of Lon

LONG-TERM DEBT - Summary of Long-Term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Par Value	$ 260,000	$ 260,000
Unamortized Debt Issuance Cost and Discount	$ (3,294)	(3,685)
Senior Notes | 5.25% senior notes due April 15, 2025
Debt Instrument [Line Items]
Stated interest rate	5.25%
Par Value	$ 175,000	175,000
Unamortized Debt Issuance Cost and Discount	$ (1,104)	(1,291)
Senior Notes | 4.375% subordinated notes due October 30, 2030
Debt Instrument [Line Items]
Stated interest rate	4.375%
Subordinated Notes | 4.375% subordinated notes due October 30, 2030
Debt Instrument [Line Items]
Par Value	$ 85,000	85,000
Unamortized Debt Issuance Cost and Discount	$ (2,190)	$ (2,394)

INCOME TAXES - Additional Infor

INCOME TAXES - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 8,700,000	$ 2,400,000	$ 17,500,000	$ 5,100,000
Effective tax rate (percent)	27.20%	12.90%	23.60%	35.90%
Effective income tax rate reconciliation, at federal and state statutory income tax rate, percent (percent)			29.50%	29.50%
Effective income tax rate reconciliation, state and local income taxes, amount			$ 2,500,000
Valuation allowance	$ 0		0		$ 0
Net deferred tax asset	40,700,000		40,700,000		46,000,000
Unrecognized tax benefits	1,000,000		1,000,000		924,000
Unrecognized tax benefits that would impact the effective tax rate	780,000		780,000
Accrued interest or penalties	$ 0		$ 0		$ 0

DERIVATIVE INSTRUMENTS - Amount

DERIVATIVE INSTRUMENTS - Amount and Market Value of Mortgage Banking Derivatives (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Gain (loss) on derivatives			$ 240	$ (285)
Notional Amount Assets	$ 68,809		68,809		$ 74,850
Derivatives asset, fair values	4,668		4,668		7,632
Notional Amount Liability	68,809		68,809		74,850
Derivatives liability, fair values	4,898		4,898		8,102
Interest rate swaps on loans
Derivatives, Fair Value [Line Items]
Gain (loss) on derivatives	41	$ 3	240	$ (285)
Notional Amount Assets	63,514		63,514		67,840
Derivatives asset, fair values	4,495		4,495		7,304
Notional Amount Liability	63,514		63,514		67,840
Derivatives liability, fair values	4,739		4,739		7,789
Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Notional Amount Assets	5,295		5,295		7,010
Derivatives asset, fair values	173		173		328
Notional Amount Liability	5,295		5,295		7,010
Derivatives liability, fair values	$ 159		$ 159		$ 313

EMPLOYEE STOCK COMPENSATION - A

EMPLOYEE STOCK COMPENSATION - Additional Information (Details) - USD ($) $ in Millions	Aug. 21, 2012	Mar. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	May 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested options outstanding (in shares)			0		0
Restricted stock awards and units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense			$ 7
Expense recognition period			2 years 1 month 6 days
Restricted stock awards and units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			1 year
Restricted stock awards and units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			5 years
Stock options | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			3 years
Award expiration period			7 years
Stock options | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			5 years
Award expiration period			10 years
Stock Appreciation Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award expiration period	10 years
Common stock issued upon exercise of SARs (in shares)		305,772
Tax benefit recognized in connection with exercise of SARs		$ 2.1
Share-based compensation arrangement by share-based payment award, non-option equity instruments, outstanding, number (in shares)			0	0	1,559,012
2018 Omnibus Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares authorized for grant (in shares)						4,417,882
Common stock available under new plan (in shares)			3,221,555

EMPLOYEE STOCK COMPENSATION - S

EMPLOYEE STOCK COMPENSATION - Share Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	$ 1,106	$ 1,346	$ 3,988	$ 4,392
Related tax benefits	326	396	1,175	1,293
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	0	0	0	4
Restricted stock awards and units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	$ 1,106	$ 1,346	$ 3,988	$ 4,388

EMPLOYEE STOCK COMPENSATION - N

EMPLOYEE STOCK COMPENSATION - Nonvested Restricted Stock Awards and Restricted Stock Units (Details) - $ / shares	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021
Restricted stock awards and units
Number of Shares
Outstanding at beginning of period (in shares)	697,088	848,302
Granted (in shares)	14,312	283,642
Vested (in shares)	(11,809)	(367,089)
Forfeited (in shares)	(38,724)	(103,988)
Outstanding at end of period (in shares)	660,867	660,867
Weighted Average Grant Date Fair Value Per Share
Outstanding at beginning of period (in dollars per share)	$ 17.13	$ 14.42
Granted (in dollars per share)	17.47	19.87
Vested (in dollars per share)	15.14	13.75
Forfeited (in dollars per share)	17.31	14.24
Outstanding at end of period (in dollars per share)	$ 17.16	$ 17.16
Performance Shares
Number of Shares
Granted (in shares)	0	66,472
Vested (in shares)	0	(77,327)
Forfeited (in shares)	(8,643)	(48,803)

EMPLOYEE STOCK COMPENSATION - O

EMPLOYEE STOCK COMPENSATION - Option Activity (Details) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2021USD ($)$ / sharesshares	Sep. 30, 2021USD ($)$ / sharesshares
Number of Shares
Outstanding at beginning of period (in shares) | shares	14,904	55,069
Exercised (in shares) | shares	0	(40,165)
Outstanding at end of period (in shares) | shares	14,904	14,904
Exercisable at end of period (in shares) | shares	14,904	14,904
Weighted-Average Exercise Price Per Share
Outstanding at beginning of period (in dollars per share) | $ / shares	$ 13.05	$ 13.96
Exercised (in dollars per share) | $ / shares	0	14.30
Outstanding at end of period (in dollars per share) | $ / shares	13.05	13.05
Exercisable at end of period (in dollars per share) | $ / shares	$ 13.05	$ 13.05
Weighted-Average Remaining Contract Term
Outstanding	3 years 6 months	3 years 6 months
Exercisable at end of period	3 years 6 months	3 years 6 months
Aggregated Intrinsic Value
Outstanding | $	$ 81	$ 81
Exercisable at end of period | $	$ 81	$ 81

EMPLOYEE STOCK COMPENSATION -_2

EMPLOYEE STOCK COMPENSATION - Summary of SARs Activity (Details) - Stock Appreciation Rights	3 Months Ended	9 Months Ended
	Sep. 30, 2021$ / sharesshares	Sep. 30, 2021$ / sharesshares
Number of Shares
Outstanding at beginning of period (in shares) | shares	0	1,559,012
Exercised (in shares) | shares	0	(1,559,012)
Outstanding at end of period (in shares) | shares	0	0
Exercisable at end of period (in shares) | shares	0	0
Weighted-Average Exercise Price Per Share
Outstanding at beginning of period (in dollars per share) | $ / shares	$ 0	$ 11.60
Exercised (in dollars per share) | $ / shares	0	11.60
Outstanding at end of period (in dollars per share) | $ / shares	0	0
Exercisable at end of period (in dollars per share) | $ / shares	$ 0	$ 0

STOCKHOLDERS' EQUITY - Addition

STOCKHOLDERS' EQUITY - Additional Information (Details) - Preferred Stock	9 Months Ended
	Sep. 30, 2021$ / sharesshares
Class of Stock [Line Items]
Preferred stock, authorized (in shares) | shares	50,000,000
Preferred stock, par value (in dollars per share)	$ 0.01
Preferred stock, liquidation preference per share (in dollars per share)	$ 1,000
Series D Depository Shares
Class of Stock [Line Items]
Interest in shares (percent)	2.50%
Series E Depository Shares
Class of Stock [Line Items]
Interest in shares (percent)	2.50%

STOCKHOLDERS' EQUITY - Summary

STOCKHOLDERS' EQUITY - Summary of Preferred Stock (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Class of Stock [Line Items]
Carrying Value	$ 94,956		$ 184,878
Preferred Stock
Class of Stock [Line Items]
Preferred stock, outstanding (in shares)	98,702		191,972
Liquidation Preference	$ 98,702		$ 191,972
Carrying Value	$ 94,956		$ 184,878
Preferred Stock | Series D 7.375% non-cumulative perpetual
Class of Stock [Line Items]
Non cumulative preferred stock, dividend rate (percent)	7.375%
Preferred stock, outstanding (in shares)	0		93,270
Liquidation Preference	$ 0		$ 93,270
Carrying Value	$ 0	$ 0	$ 89,922	$ 2	$ 3,240
Preferred Stock | Series E 7.00% non-cumulative perpetual
Class of Stock [Line Items]
Non cumulative preferred stock, dividend rate (percent)	7.00%
Preferred stock, outstanding (in shares)	98,702		98,702
Liquidation Preference	$ 98,702		$ 98,702
Carrying Value	$ 94,956	$ 0	$ 94,956	$ 156	$ 1,707

STOCKHOLDERS' EQUITY - Deposito

STOCKHOLDERS' EQUITY - Depository Share Repurchases (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Class of Stock [Line Items]
Carrying Value	$ 94,956			$ 94,956			$ 184,878
Preferred Stock
Class of Stock [Line Items]
Carrying Value	$ 94,956			$ 94,956			184,878
Preferred Stock | Series D Depository Shares
Class of Stock [Line Items]
Shares redeemed (in shares)	0		100	3,730,767	134,410
Preferred Stock | Series D Preferred Stock
Class of Stock [Line Items]
Shares redeemed (in shares)	0		3	93,269	3,360
Payment for redemption of shares	$ 0		$ 2	$ 93,269	$ 2,698
Carrying Value	0			0		$ 0	89,922	$ 2	$ 3,240
Impact of preferred stock redemption	$ 0	$ 3,300	$ 0	$ 3,347	$ (541)
Preferred Stock | Series E Depository Shares
Class of Stock [Line Items]
Shares redeemed (in shares)	0		6,502	0	70,967
Preferred Stock | Series E Preferred Stock
Class of Stock [Line Items]
Shares redeemed (in shares)	0		163	0	1,774
Payment for redemption of shares	$ 0		$ 164	$ 0	$ 1,680
Carrying Value	94,956			94,956		$ 0	$ 94,956	$ 156	$ 1,707
Impact of preferred stock redemption	$ 0		$ 7	$ 0	$ (27)

STOCKHOLDERS' EQUITY - Changes

STOCKHOLDERS' EQUITY - Changes to Accumulated Other Comprehensive (Loss) Income by Components (Details) - Gain (loss) on securities available-for-sale - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period	$ 14,740	$ (15,565)	$ 7,746	$ (11,900)
Unrealized gain (loss) arising during the period	(5,377)	23,859	4,535	20,677
Reclassification adjustment from other comprehensive income	0	0	0	(2,011)
Tax effect of current period changes	1,585	(7,028)	(1,333)	(5,500)
Total changes, net of taxes	(3,792)	16,831	3,202	13,166
Balance at end of period	$ 10,948	$ 1,266	$ 10,948	$ 1,266

VARIABLE INTEREST ENTITIES - Ad

VARIABLE INTEREST ENTITIES - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Variable Interest Entity [Line Items]
Total assets	$ 8,278,741			$ 8,278,741		$ 7,877,334
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Fundings	0	$ 0		0	$ 3,631
Maximum loss exposure	25,196			25,196		27,977
Total assets	246,796			246,796		251,713
Variable Interest Entity, Not Primary Beneficiary | Other Assets
Variable Interest Entity [Line Items]
Total assets	$ 25,200			$ 25,200		$ 28,000
Variable Interest Entity, Not Primary Beneficiary | Multifamily
Variable Interest Entity [Line Items]
Fundings			$ 573,500
Credit losses guaranteed (percent)	12.00%			12.00%
Maximum loss exposure	$ 68,800			$ 68,800
Repurchase liability recognized	$ 3,600			$ 3,600

VARIABLE INTEREST ENTITIES - In

VARIABLE INTEREST ENTITIES - Information Regarding Activity in Alternative Energy Partnerships (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Variable Interest Entity [Line Items]
Gain (loss) on investments in alternative energy partnerships	$ 1,785	$ 829	$ 1,430	$ (1,016)	$ (308)
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Fundings	0		0	0	3,631
Cash distribution from investment	657		611	1,765	1,612
Gain (loss) on investments in alternative energy partnerships	1,785		1,430	(1,016)	(308)
Income tax credits recognized	0		0	0	0
Tax expense (benefit) recognized from HLBV application	$ 491		$ 185	$ (280)	$ (111)

VARIABLE INTEREST ENTITIES - Su

VARIABLE INTEREST ENTITIES - Summary of Unconsolidated VIEs (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Equipment, net of depreciation	$ 114,011	$ 121,520
Other assets	224,721	195,119
Total assets	8,278,741	7,877,334
Total unconsolidated liabilities	7,433,938	6,980,127
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Cash	3,109	3,228
Equipment, net of depreciation	234,972	241,015
Other assets	8,715	7,470
Total assets	246,796	251,713
Total unconsolidated liabilities	6,230	6,357
Maximum loss exposure	$ 25,196	$ 27,977

VARIABLE INTEREST ENTITIES - Ba

VARIABLE INTEREST ENTITIES - Balances and Activity in Affordable Housing Partnerships (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Variable Interest Entity [Line Items]
Fundings			$ 6,320	$ 17,346
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Maximum loss exposure			27,977
Maximum loss exposure	$ 25,196		25,196
Income tax credits recognized	(491)	$ (185)	280	111
Affordable Housing Fund Investment
Variable Interest Entity [Line Items]
Unfunded commitment	12,600		12,600
Affordable Housing Fund Investment | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Maximum loss exposure			43,209
Aggregate funding commitment	61,278		61,278		$ 61,278
Total amount funded	48,718		48,718		42,991
Unfunded commitment	12,560		12,560		$ 18,287
Maximum loss exposure	40,095		40,095
Fundings	3,563	1,602	5,727	15,473
Proportional amortization recognized	1,051	1,724	3,114	4,019
Income tax credits recognized	$ 1,155	$ 1,007	$ 3,466	$ 3,215

EARNINGS (LOSS) PER COMMON SH_3

EARNINGS (LOSS) PER COMMON SHARE - Computations for Basic and Diluted Earnings/(Loss) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Schedule of Earnings Per Share [Line Items]
Less: Income allocated to participating securities	$ 0	$ 0	$ (281)	$ (160)	$ 0
Less: participating securities dividends	0	0	(94)	0	(282)
Less: preferred stock dividends	(1,727)	(1,727)	(3,447)	(6,595)	(10,422)
Less: preferred stock redemption	0	$ 0	(7)	(3,347)	568
Voting
Schedule of Earnings Per Share [Line Items]
Net income(loss)	22,953		15,761	56,061	(9,043)
Less: Income allocated to participating securities	0		(278)	(158)	0
Less: participating securities dividends			(93)		(279)
Less: preferred stock dividends	(1,711)		(3,414)	(6,533)	(10,323)
Less: preferred stock redemption	0		(7)
Less: preferred stock redemption				3,315	563
Impact of preferred stock redemption				(3,315)	(563)
Net income allocated to common stockholders	$ 21,242		$ 11,969	$ 46,055	$ (19,082)
Weighted average common shares outstanding (in shares)	50,239,359		49,631,334	50,096,607	49,723,791
Average shares and dilutive common shares (in shares)	50,431,996		49,713,612	50,344,651	49,723,791
Basic loss per common share
Basic earnings (loss) per common share (in dollars per share)	$ 0.42	$ 0.34	$ 0.24	$ 0.92	$ (0.38)
Diluted loss per common share
Diluted earnings (loss) per common share (in dollars per share)	$ 0.42	0.34	$ 0.24	$ 0.91	$ (0.38)
Voting | Dilutive effects of restricted shares/units
Schedule of Earnings Per Share [Line Items]
Dilutive effects of stock units and stock options (in shares)	188,850		82,278	242,803	0
Voting | Dilutive effects of stock options
Schedule of Earnings Per Share [Line Items]
Dilutive effects of stock units and stock options (in shares)	3,787		0	5,241	0
Class B Common Stock
Schedule of Earnings Per Share [Line Items]
Net income(loss)	$ 217		$ 152	$ 534	$ (86)
Less: Income allocated to participating securities	0		(3)	(2)	0
Less: participating securities dividends			(1)		(3)
Less: preferred stock dividends	(16)		(33)	(62)	(99)
Less: preferred stock redemption	0		0
Less: preferred stock redemption				32	5
Impact of preferred stock redemption				(32)	(5)
Net income allocated to common stockholders	$ 201		$ 115	$ 438	$ (183)
Weighted average common shares outstanding (in shares)	477,321		477,321	477,321	477,321
Average shares and dilutive common shares (in shares)	477,321		477,321	477,321	477,321
Basic loss per common share
Basic earnings (loss) per common share (in dollars per share)	$ 0.42	0.34	$ 0.24	$ 0.92	$ (0.38)
Diluted loss per common share
Diluted earnings (loss) per common share (in dollars per share)	$ 0.42	$ 0.34	$ 0.24	$ 0.92	$ (0.38)
Class B Common Stock | Dilutive effects of restricted shares/units
Schedule of Earnings Per Share [Line Items]
Dilutive effects of stock units and stock options (in shares)	0		0	0	0
Class B Common Stock | Dilutive effects of stock options
Schedule of Earnings Per Share [Line Items]
Dilutive effects of stock units and stock options (in shares)	0		0	0	0

EARNINGS (LOSS) PER COMMON SH_4

EARNINGS (LOSS) PER COMMON SHARE - Additional Information (Details) - shares	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Stock Appreciation Rights
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common stock issued upon exercise of SARs (in shares)		305,772
Dilutive effects of restricted shares/units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock excluded from computation of earnings per share (in shares)	206,035		643,901	194,615	938,526
Dilutive effects of stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock excluded from computation of earnings per share (in shares)	0		55,069	0	55,314

LOAN COMMITMENTS AND OTHER RE_3

LOAN COMMITMENTS AND OTHER RELATED ACTIVITIES - Contractual Amount of Financial Instruments with Off-Balance-Sheet Risk (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Affordable Housing Fund Investment
Other Commitments [Line Items]
Unfunded commitment	$ 12,600
Small Business Investment Companies
Other Commitments [Line Items]
Unfunded commitment	5,600
Other Investments
Other Commitments [Line Items]
Unfunded commitment	2,500
Commitments to extend credit
Other Commitments [Line Items]
Fixed Rate	28,983	$ 17,555
Variable Rate	124,427	38,141
Unused lines of credit
Other Commitments [Line Items]
Fixed Rate	3,043	1,783
Variable Rate	1,462,873	1,348,138
Letters of credit
Other Commitments [Line Items]
Fixed Rate	487	234
Variable Rate	$ 7,694	$ 8,274

REVENUE RECOGNITION - Summary o

REVENUE RECOGNITION - Summary of Noninterest Income (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	$ 1,510		$ 1,081	$ 4,208	$ 2,705
Noninterest income (out-of-scope of Topic 606)	4,009		2,873	9,862	8,838
Total noninterest income	5,519	$ 4,170	3,954	14,070	11,543
Deposit service fees
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	913		648	2,548	1,607
Debit card fees
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	451		384	1,333	941
Other
Disaggregation of Revenue [Line Items]
Noninterest income (in-scope of Topic 606)	$ 146		$ 49	$ 327	$ 157

RELATED-PARTY TRANSACTIONS - Ad

RELATED-PARTY TRANSACTIONS - Additional Information (Details) - Special Committee Investigation Indemnification - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Current Directors
Related Party Transaction [Line Items]
Expenses from transactions with related parties	$ 244	$ 120	$ 400	$ 120
Executive Officers and Directors
Related Party Transaction [Line Items]
Expenses from transactions with related parties	$ 513	$ 465	$ 1,200	$ 687

SUBSEQUENT EVENTS (Details)

SUBSEQUENT EVENTS (Details) $ / shares in Units, $ in Thousands	Oct. 18, 2021USD ($)$ / sharesshares	Sep. 30, 2021USD ($)tradingDaybranch	Dec. 31, 2020USD ($)
Subsequent Event [Line Items]
Number of trading days | tradingDay		20
Loans receivable		$ 6,228,575	$ 5,898,405
Total assets		8,278,741	7,877,334
Deposits		6,543,225	$ 6,085,800
Pacific Mercantile Bancorp (“PMB”)
Subsequent Event [Line Items]
Loans receivable		982,400
Total assets		1,490,000
Deposits		1,290,000
Pacific Mercantile Bancorp (“PMB”) | Subsequent Event
Subsequent Event [Line Items]
Exchange ratio	0.5
Common Stock | Subsequent Event
Subsequent Event [Line Items]
Closing price of BOC's common stock (in USD per share) | $ / shares	$ 18.74
Pacific Mercantile Bancorp (“PMB”)
Subsequent Event [Line Items]
Pro forma purchase adjustments		$ 9,800,000
Number of full services branches | branch		33
Pacific Mercantile Bancorp (“PMB”) | Subsequent Event
Subsequent Event [Line Items]
Stock consideration	$ 222,200
Cash paid at closing	3,200
Aggregate purchase price	$ 225,400
Pacific Mercantile Bancorp (“PMB”) | Common Stock | Subsequent Event
Subsequent Event [Line Items]
BOC common stock shares issued (in shares) | shares	11,856,713

Uncategorized Items - banc-2021

Label	Element	Value
Accounting Standards Update [Extensible Enumeration]	us-gaap_AccountingStandardsUpdateExtensibleList	Accounting Standards Update 2016-13 [Member]