Sterling Bancorp, Inc. (SBT) 10-Q 15 Nov 21 2021 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2021	Nov. 08, 2021
Document and Entity Information
Document Type	10-Q
Document Transition Report.	false
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Entity File Number	001-38290
Entity Registrant Name	Sterling Bancorp, Inc.
Entity Incorporation, State or Country Code	MI
Entity Tax Identification Number	38-3163775
Entity Address, Address Line One	One Towne Square
Entity Address, Address Line Two	Suite 1900
Entity Address, City or Town	Southfield
Entity Address, State or Province	MI
Entity Address, Postal Zip Code	48076
City Area Code	248
Local Phone Number	355-2400
Title of 12(b) Security	Common stock
Trading Symbol	SBT
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		50,449,063
Entity Central Index Key	0001680379
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Amendment Flag	false

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Assets
Cash and due from banks	$ 609,412	$ 998,497
Interest-bearing time deposits with other banks	805	7,021
Investment securities	204,689	304,958
Mortgage loans held for sale	12,744	22,284
Loans, net of allowance for loan losses of $70,238 and $72,387	2,168,544	2,434,356
Accrued interest receivable	8,355	10,990
Mortgage servicing rights, net	2,873	5,688
Leasehold improvements and equipment, net	8,931	8,512
Operating lease right-of-use assets	18,889	19,232
Federal Home Loan Bank stock, at cost	22,950	22,950
Cash surrender value of bank-owned life insurance	32,899	32,495
Deferred tax asset, net	23,379	24,326
Other assets	24,494	22,736
Total assets	3,138,964	3,914,045
Liabilities:
Noninterest-bearing deposits	65,456	64,509
Interest-bearing deposits	2,274,039	3,040,508
Total deposits	2,339,495	3,105,017
Federal Home Loan Bank borrowings	307,000	318,000
Subordinated notes, net	65,360	65,341
Operating lease liabilities	20,106	20,497
Accrued expenses and other liabilities	70,438	85,599
Total liabilities	2,802,399	3,594,454
Shareholders' equity:
Preferred stock, authorized 10,000,000 shares; no shares issued and outstanding
Common stock, no par value, authorized 500,000,000 shares; issued and outstanding 50,475,064 shares and 49,981,861 shares at September 30, 2021 and December 31, 2020, respectively	82,157	80,807
Additional paid-in capital	13,992	13,544
Retained earnings	240,187	224,853
Accumulated other comprehensive income	229	387
Total shareholders' equity	336,565	319,591
Total liabilities and shareholders' equity	$ 3,138,964	$ 3,914,045

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Condensed Consolidated Balance Sheets
Allowance for loan losses	$ 70,238	$ 72,387
Preferred stock, authorized (in shares)	10,000,000	10,000,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, authorized (in shares)	500,000,000	500,000,000
Common stock, issued (in shares)	50,475,064	49,981,861
Common stock, outstanding (in shares)	50,475,064	49,981,861

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Interest income
Interest and fees on loans	$ 27,348	$ 35,918	$ 88,716	$ 112,944
Interest and dividends on investment securities and restricted stock	375	901	1,150	2,972
Other interest	253	211	743	786
Total interest income	27,976	37,030	90,609	116,702
Interest expense
Interest on deposits	3,541	9,288	15,479	29,228
Interest on Federal Home Loan Bank borrowings	826	859	2,511	2,546
Interest on subordinated notes	972	1,178	3,157	3,533
Total interest expense	5,339	11,325	21,147	35,307
Net interest income	22,637	25,705	69,462	81,395
Provision (recovery) for loan losses	397	2,123	(2,146)	27,273
Net interest income after provision (recovery) for loan losses	22,240	23,582	71,608	54,122
Non-interest income
Non-interest income	$ 120	$ 61	$ 423	$ 273
Revenue, Product and Service [Extensible List]	sbt:ServiceChargesAndFeesMember	sbt:ServiceChargesAndFeesMember	sbt:ServiceChargesAndFeesMember	sbt:ServiceChargesAndFeesMember
Gain (loss) on sale of investment securities		$ (20)		$ 179
Gain on sale of mortgage loans held for sale	$ 151	437	$ 619	1,457
Unrealized gains (losses) on equity securities	(24)		(99)	123
Gain on sale of branch office	1,417		1,417
Net servicing loss	(31)	(121)	(1,369)	(1,239)
Income on cash surrender value of bank-owned life insurance	325	317	960	962
Other	100	437	291	1,208
Total non-interest income	2,058	1,111	2,242	2,963
Non-interest expense
Salaries and employee benefits	2,774	7,517	19,300	21,606
Occupancy and equipment	2,395	2,219	6,840	6,545
Professional fees	4,024	12,207	18,500	23,787
FDIC assessments	417	956	1,636	1,215
Data processing	403	392	1,189	1,078
Net provision (recovery) of mortgage repurchase liability	(298)		(963)	25
Other	1,361	1,683	5,852	5,000
Total non-interest expense	11,076	24,974	52,354	59,256
Income (loss) before income taxes	13,222	(281)	21,496	(2,171)
Income tax expense (benefit)	3,665	(170)	6,162	(897)
Net income (loss)	$ 9,557	$ (111)	$ 15,334	$ (1,274)
Income (loss) per share, diluted	$ 0.19	$ 0	$ 0.31	$ (0.03)
Weighted average common shares outstanding:
Basic	50,167,295	49,843,925	50,010,341	49,839,860
Diluted	50,262,686	49,843,925	50,079,931	49,839,860

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Condensed Consolidated Statements of Comprehensive Income (Loss)
Net income (loss)	$ 9,557	$ (111)	$ 15,334	$ (1,274)
Other comprehensive income (loss), net of tax:
Unrealized gains (losses) on investment securities, arising during the period, net of tax effect of $(89), $(86), $(61), and $131, respectively	(230)	(222)	(158)	338
Reclassification adjustment for (gains) losses included in net income of $-, $20, $-, and $(179), respectively, included in gain (loss) on sale of investment securities, net of tax effect of $-, $(6), $-, and $50, respectively		14		(129)
Total other comprehensive income (loss)	(230)	(208)	(158)	209
Comprehensive income (loss)	$ 9,327	$ (319)	$ 15,176	$ (1,065)

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Condensed Consolidated Statements of Comprehensive Income (Loss)
Unrealized gains on investment securities, arising during the period, tax effect	$ (89)	$ (86)	$ (61)	$ 131
Reclassification adjustment for gains (losses) included in net income on sale of investment securities, before tax		20		(179)
Reclassification adjustment for gains included in net income on sale of investment securities, tax effect		$ (6)		$ 50

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Common stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income	Total
Balance at beginning of the period at Dec. 31, 2019	$ 80,889	$ 13,210	$ 238,319	$ 196	$ 332,614
Balance at beginning of the period (in shares) at Dec. 31, 2019	49,944,473
Increase (Decrease) in Stockholders' Equity
Net income (loss)			(4,030)		(4,030)
Repurchases of shares of common stock	$ (82)				(82)
Repurchases of shares of common stock (in shares)	(10,912)
Stock-based compensation		109			109
Stock-based compensation (in shares)	134,177
Other comprehensive income (loss)				563	563
Dividends distributed ($0.01 per share)			(499)		(499)
Balance at end of the period at Mar. 31, 2020	$ 80,807	13,319	233,790	759	328,675
Balance at end of the period (in shares) at Mar. 31, 2020	50,067,738
Balance at beginning of the period at Dec. 31, 2019	$ 80,889	13,210	238,319	196	332,614
Balance at beginning of the period (in shares) at Dec. 31, 2019	49,944,473
Increase (Decrease) in Stockholders' Equity
Net income (loss)					(1,274)
Other comprehensive income (loss)					209
Balance at end of the period at Sep. 30, 2020	$ 80,807	13,386	236,546	405	331,144
Balance at end of the period (in shares) at Sep. 30, 2020	49,977,209
Balance at beginning of the period at Mar. 31, 2020	$ 80,807	13,319	233,790	759	328,675
Balance at beginning of the period (in shares) at Mar. 31, 2020	50,067,738
Increase (Decrease) in Stockholders' Equity
Net income (loss)			2,867		2,867
Stock-based compensation		9			9
Stock-based compensation (in shares)	(60,323)
Other comprehensive income (loss)				(146)	(146)
Balance at end of the period at Jun. 30, 2020	$ 80,807	13,328	236,657	613	331,405
Balance at end of the period (in shares) at Jun. 30, 2020	50,007,415
Increase (Decrease) in Stockholders' Equity
Net income (loss)			(111)		(111)
Stock-based compensation		58			58
Stock-based compensation (in shares)	(30,206)
Other comprehensive income (loss)				(208)	(208)
Balance at end of the period at Sep. 30, 2020	$ 80,807	13,386	236,546	405	331,144
Balance at end of the period (in shares) at Sep. 30, 2020	49,977,209
Balance at beginning of the period at Dec. 31, 2020	$ 80,807	13,544	224,853	387	319,591
Balance at beginning of the period (in shares) at Dec. 31, 2020	49,981,861
Increase (Decrease) in Stockholders' Equity
Net income (loss)			2,325		2,325
Repurchase of restricted shares to pay employee tax liability		(46)			(46)
Repurchase of restricted shares to pay employee tax liability (in shares)	(8,536)
Stock-based compensation		105			105
Stock-based compensation (in shares)	36,082
Other comprehensive income (loss)				(59)	(59)
Balance at end of the period at Mar. 31, 2021	$ 80,807	13,603	227,178	328	321,916
Balance at end of the period (in shares) at Mar. 31, 2021	50,009,407
Balance at beginning of the period at Dec. 31, 2020	$ 80,807	13,544	224,853	387	319,591
Balance at beginning of the period (in shares) at Dec. 31, 2020	49,981,861
Increase (Decrease) in Stockholders' Equity
Net income (loss)					15,334
Repurchases of shares of common stock	$ (82)
Repurchases of shares of common stock (in shares)	(10,912)
Other comprehensive income (loss)					(158)
Balance at end of the period at Sep. 30, 2021	$ 82,157	13,992	240,187	229	336,565
Balance at end of the period (in shares) at Sep. 30, 2021	50,475,064
Balance at beginning of the period at Mar. 31, 2021	$ 80,807	13,603	227,178	328	321,916
Balance at beginning of the period (in shares) at Mar. 31, 2021	50,009,407
Increase (Decrease) in Stockholders' Equity
Net income (loss)			3,452		3,452
Issuance of shares of common stock for cash ($4.50 per share)	$ 1,350				1,350
Issuance of shares of common stock for cash ($4.50 per share) (in shares)	300,000
Stock-based compensation		193			193
Stock-based compensation (in shares)	165,774
Other comprehensive income (loss)				131	131
Balance at end of the period at Jun. 30, 2021	$ 82,157	13,796	230,630	459	327,042
Balance at end of the period (in shares) at Jun. 30, 2021	50,475,181
Increase (Decrease) in Stockholders' Equity
Net income (loss)			9,557		9,557
Stock-based compensation		196			196
Stock-based compensation (in shares)	(117)
Other comprehensive income (loss)				(230)	(230)
Balance at end of the period at Sep. 30, 2021	$ 82,157	$ 13,992	$ 240,187	$ 229	$ 336,565
Balance at end of the period (in shares) at Sep. 30, 2021	50,475,064

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Jun. 30, 2021	Mar. 31, 2020
Condensed Consolidated Statements of Changes in Shareholders' Equity
Dividends paid per common share (in dollars per share)		$ 0.01
Issuance of common stock	$ 4.50

Condensed Consolidated Statem_6

Condensed 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)	$ 15,334	$ (1,274)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Provision (recovery) for loan losses	(2,146)	27,273
Deferred income tax expense (benefit)	1,009	(8,574)
Gain on sale of branch office	(1,417)
Gain on sale of investment securities		(179)
Unrealized (gains) losses on equity securities	99	(123)
Net amortization on investment securities	1,229	128
Depreciation and amortization on leasehold improvements and equipment	1,395	1,199
Origination, net of principal payments, mortgage loans held for sale	(9,385)	(160,540)
Proceeds from sale of mortgage loans held for sale	19,179	158,683
Gain on sale of mortgage loans held for sale	(619)	(1,457)
Net provision (recovery) of mortgage repurchase liability	(963)	25
Increase in cash surrender value of bank-owned life insurance, net of premiums	(404)	(438)
Valuation allowance adjustments and amortization of mortgage servicing rights	2,939	3,951
Stock-based compensation	494	176
Other	475	96
Change in operating assets and liabilities:
Accrued interest receivable	2,635	1,333
Other assets	1,588	(3,937)
Accrued expenses and other liabilities	(12,263)	(1,040)
Net cash provided by operating activities	19,179	15,302
Cash Flows From Investing Activities
Maturities of interest-bearing time deposits with other banks	6,216	1,743
Purchases of interest-bearing time deposits with other banks		(8,706)
Maturities and principal receipts of investment securities	121,958	117,533
Sales of investment securities	0	99,971
Purchases of investment securities	(23,237)	(312,381)
Net decrease in loans	441,787	306,630
Purchases of portfolio loans	(179,341)	(69,465)
Cash paid on sale of branch office	(63,545)
Purchase of leasehold improvements and equipment	(2,321)	(494)
Net cash provided by investing activities	301,517	134,831
Cash Flows From Financing Activities
Net increase (decrease) in deposits	(700,085)	601,625
Proceeds from advances from Federal Home Loan Bank		100,000
Repayments of advances from Federal Home Loan Bank	(11,000)	(11,000)
Proceeds from issuance of shares of common stock	1,350
Repurchase of restricted shares to pay employee tax liability	(46)
Repurchases of shares of common stock		(82)
Dividends paid to shareholders		(499)
Net cash provided by (used in) financing activities	(709,781)	690,044
Net change in cash and due from banks	(389,085)	840,177
Cash and due from banks at beginning of period	998,497	77,819
Cash and due from banks at end of period	609,412	917,996
Cash paid:
Interest	38,156	39,837
Income taxes	11	13,897
Noncash investing and financing activities:
Transfers of residential real estate loans from mortgage loans held for sale		399
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 3,186	$ 3,449

Nature of Operations and Basis

Nature of Operations and Basis of Presentation	9 Months Ended
	Sep. 30, 2021
Nature of Operations and Basis of Presentation
Nature of Operations and Basis of Presentation	Note 1—Nature of Operations and Basis of Presentation Nature of Operations Sterling Bancorp, Inc. (the “Company”) is a unitary thrift holding company that was incorporated in 1989 and the parent company of its wholly owned subsidiary, Sterling Bank and Trust, F.S.B. (the “Bank”). The Company’s business is conducted through the Bank, which was formed in 1984. The Bank originates residential and commercial real estate loans, construction loans, commercial lines of credit and other consumer loans and provides deposit products, consisting primarily of checking, savings and term certificate accounts. The Bank operates through a network of 29 branches of which 26 branches are located in San Francisco and Los Angeles, California with the remaining branches located in New York, New York and Southfield, Michigan. The Company is headquartered in Southfield, Michigan, and its operations are in the financial services industry. Management evaluates the performance of the Company’s business based on one reportable segment, community banking. The Company is subject to regulation, examination and supervision by the Board of Governors of the Federal Reserve System (the “FRB” or “Federal Reserve”). The Bank is a federally chartered stock savings bank that is subject to regulation, supervision and examination by the Office of the Comptroller of the Currency (“OCC”) of the U.S. Department of Treasury and the Federal Deposit Insurance Corporation (“FDIC”) and is a member of the Federal Home Loan Bank (“FHLB”) system. In July 2021, the Bank completed the sale of the Bellevue, Washington branch office to First Federal Savings & Loan Association of Port Angeles (“First Federal”), a Washington state chartered bank. The sale included the transfer of customer deposit accounts of $65,437 located at the branch, as well as the transfer of all branch premises and equipment. The transaction resulted in a net cash payment to First Federal of $63,545. The Bank recorded a gain on the sale of $1,417 during the three and nine months ended September 30, 2021. Basis of Presentation The condensed consolidated balance sheet as of September 30, 2021 and the condensed consolidated statements of operations, comprehensive income (loss), changes in shareholders’ equity and cash flows for the three and nine months ended September 30, 2021 and 2020 are unaudited. The unaudited condensed consolidated financial statements have been prepared on the same basis as the annual consolidated financial statements and reflect all adjustments, in the opinion of management, of a normal recurring nature that are necessary for a fair presentation of the financial position, results of operations and cash flows for the periods presented. The financial data and other financial information disclosed in these notes to the condensed consolidated financial statements related to these periods are also unaudited. 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 ended December 31, 2021 or for any future annual or interim period. The consolidated balance sheet at December 31, 2020 included herein was derived from the audited financial statements as of that date. The accompanying unaudited condensed consolidated financial statements and notes thereto should be read in conjunction with the audited consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020, as filed with the U.S. Securities and Exchange Commission (the “SEC”) on March 26, 2021 (the “2020 Form 10-K”).

New Accounting Standards

New Accounting Standards	9 Months Ended
	Sep. 30, 2021
New Accounting Standards
New Accounting Standards	Note 2—New Accounting Standards Recently Issued Accounting Guidance Not Yet Adopted In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments Codification Improvements to Topic 326, Financial Instruments—Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments, scope of the credit losses standard and addresses issues related to accrued interest receivable balances and recoveries, among other things. In May 2019, the FASB issued ASU No. 2019-05, Financial Instruments—Credit Losses (Topic 326): Targeted Transition Relief. Financial Instruments—Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842): Effective Dates At this time, a cross-functional implementation team consisting of individuals from accounting, finance, servicing and information systems is working with the Bank’s loan system vendor to develop an application to create credit loss estimation models and processes. The historical data set for model development has been finalized, and the credit loss estimation models are in the process of being developed and tested. Once the credit loss estimation models are finalized, the Bank will run the new credit loss estimation models in parallel with the current allowance for loan losses model to understand the differences in the models and assess the impact of the change. The Company expects to recognize a cumulative effect adjustment to the opening balance of retained earnings as of January 1, 2023, the beginning of the first reporting period in which ASU No. 2016-13 is effective. The Company has not yet determined the magnitude of any such one-time cumulative adjustment or of the overall impact of ASU No. 2016-13 on its consolidated financial statements.

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2021
Summary of Significant Accounting Policies
Summary of Significant Accounting Policies	Note 3—Summary of Significant Accounting Policies Principles of Consolidation The accompanying condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”). The condensed consolidated financial statements include the results of the Company and its wholly-owned subsidiary. On December 21, 2020, QCM, LLC, doing business as Quantum Capital Management, a wholly-owned subsidiary of Quantum Fund, LLC and an indirect wholly-owned subsidiary of the Bank, completed the sale of substantially all of its assets, which consisted primarily of client advisory agreements for aggregate consideration of $250 . The operations of Quantum Capital Management were not significant. All significant intercompany accounts and transactions have been eliminated in consolidation. Use of Estimates The preparation of the condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Due to the inherent uncertainty involved in making estimates, actual results reported in the future periods may be based upon amounts that could differ from those estimates. Concentration of Credit Risk The loan portfolio consists primarily of residential real estate loans, which are collateralized by real estate. At September 30, 2021 and December 31, 2020, residential real estate loans accounted for 81% of the loan portfolio. In addition, most of these residential loans and other commercial loans have been made to individuals and businesses in the state of California, which are dependent on the area economy for their livelihoods and servicing of their loan obligation. At September 30, 2021 and December 31, 2020, approximately 85% and 87%, respectively, of the loan portfolio was originated with respect to properties or businesses located in California. Starting December 9, 2019, the Bank suspended its Advantage Loan Program and announced on March 6, 2020 that it permanently discontinued this program. Loans originated under this Program comprised a significant component of the Bank’s total loan originations. Advantage Loan Program loans (including residential real estate loans held for sale of $11,993, of which $8,744 were on nonaccrual status, and $19,375 at December 31, 2020, all of which were on nonaccrual status) totaled $1,299,438 and $1,515,248, or 71% and 74% , of the residential loan portfolio at September 30, 2021 and December 31, 2020, respectively. Refer to Note 16 – Risks and Uncertainties – COVID-19 The coronavirus disease 2019 (“COVID-19”) pandemic, and related efforts to contain it, have caused significant disruptions in the functioning of the financial markets, resulted in an unprecedented slowdown in economic activity and a related increase in unemployment, and have increased economic and market uncertainty and volatility. The Company’s primary market areas of California and New York City have been hit particularly hard by the COVID-19 pandemic. Federal and state governments have taken unprecedented actions to contain the spread of the disease, including vaccine distribution, closures of businesses and schools, fiscal stimulus, and legislation designed to deliver monetary aid and other relief for businesses and individuals impacted by the pandemic. The COVID-19 pandemic continues to create and exacerbate significant risks and uncertainties for the markets that the Bank serves. As the Bank’s residential and commercial customers are facing various levels of financial stress, the Bank continues to experience an elevated level of delinquent and nonaccrual loans, primarily in residential real estate, office, lodging, retail and construction loans. The duration and severity of the effect of the COVID-19 pandemic on economic, market and business conditions remain uncertain. The Company continues to be subject to heightened business, operational, market, credit and other risks related to the COVID-19 pandemic, which may have an adverse effect on its business, financial condition, liquidity, results of operations, risk-weighted assets and regulatory capital. Employee Retention Credits Under the CARES Act On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”) was signed into law providing numerous tax provisions and other stimulus measures, including an employee retention credit (“ERC”), which is a refundable tax credit against certain employment taxes. The Taxpayer Certainty and Disaster Tax Relief Act of 2020 and the American Rescue Plan Act of 2021 extended and expanded the availability of the ERC. The ERC is equal to 70% of qualified wages paid to employees (including employer qualified health plan expenses) and is capped at $10,000 of qualified wages for each employee, such that the maximum ERC that can be claimed is $7,000 per employee per applicable quarter in 2021. As a result of the Company averaging 500 or fewer full-time employees in 2019, all wages paid to employees were eligible for the ERC (rather than just wages paid to employees not providing services). The Company evaluated its eligibility for the ERC in the third quarter of 2021. The Company determined it qualified for the ERC for the first three quarters of 2021 because the Company’s gross receipts (which consisted of total interest income and other fees and income from banking activities and services) decreased more than 20% in 2021 from each of the respective quarters of 2019, the relevant criteria for the ERC. The Company is in the process of amending certain payroll tax filings to apply for a refund for each of the first three quarters of 2021. The Company cannot reasonably estimate when it will receive the refunds once the filings have been made. Since there is not any U.S. GAAP guidance for for-profit business entities that receive government assistance that is not in the form of a loan, an income tax credit or revenue from a contract with a customer, the Company accounted for the employee retention credit by analogy to International Accounting Standards 20 (“IAS 20”). Under IAS 20, a business entity would recognize the credit on a systematic basis over the periods in which it recognizes the payroll expenses for which the grant (tax credit) is intended to compensate when there is reasonable assurance that the entity will comply with any conditions attached to grant and the grant will be received. The Company has made an accounting policy election to record the ERC benefit as a reduction to payroll expenses. During the three and nine months ended September 30, 2021, the Company recorded a benefit of $6,529 resulting in a net reduction of salaries and employee benefits expense in the condensed consolidated statements of operations. The Company has recorded a grant receivable of Reclassification Certain prior period amounts have been reclassified to conform with the current period presentation. The Company has reclassified custodial escrow balances maintained with serviced loans of $6,051 from accrued ​

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2021
Investment Securities
Investment Securities	Note 4—Investment Securities Debt Securities The following tables summarize the amortized cost and fair value of debt securities available for sale at September 30, 2021 and December 31, 2020 and the corresponding amounts of gross unrealized gains and losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2021 ​ ​ Amortized ​ Gross Unrealized ​ Fair ​ Cost Gain Loss Value Available for sale: ​ ​ ​ ​ U.S. Treasury & Agency securities ​ $ 73,427 ​ $ 79 ​ $ — ​ $ 73,506 Mortgage-backed securities ​ ​ 26,833 ​ ​ 57 ​ ​ (314) ​ ​ 26,576 Collateralized mortgage obligations ​ 98,636 ​ 558 ​ (43) ​ 99,151 Collateralized debt obligations ​ 211 ​ — ​ (20) ​ 191 Total ​ $ 199,107 ​ $ 694 ​ $ (377) ​ $ 199,424 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ ​ Amortized ​ Gross Unrealized ​ Fair ​ Cost Gain Loss Value Available for sale: ​ ​ ​ ​ U.S. Treasury & Agency securities ​ $ 138,742 ​ $ 255 ​ $ — ​ $ 138,997 Mortgage-backed securities ​ ​ 33,743 ​ ​ 72 ​ ​ (1) ​ ​ 33,814 Collateralized mortgage obligations ​ 126,359 ​ 628 ​ (391) ​ 126,596 Collateralized debt obligations ​ 214 ​ — ​ (27) ​ 187 Total ​ $ 299,058 ​ $ 955 ​ $ (419) ​ $ 299,594 ​ Securities with a fair value of $73,506 were pledged as collateral on FHLB borrowings at September 30, 2021. All of the Company’s mortgage-backed securities, and a majority of the Company’s collateralized mortgage obligations are issued and/or guaranteed by a U.S. government agency (Government National Mortgage Association) or a U.S. government-sponsored enterprise (Federal Home Loan Mortgage Corporation (“Freddie Mac”) or Federal National Mortgage Association (“Fannie Mae”)). The fair value of the private-label collateralized mortgage obligations was $632 and $816 at September 30, 2021 and December 31, 2020, respectively. No securities of any single issuer, other than debt securities issued by the U.S. government, government agency and government-sponsored enterprises, were in excess of 10% of total shareholders’ equity as of September 30, 2021 and December 31, 2020. For the three and nine months ended September 30, 2020, the proceeds from sales of debt securities available for sale were $40,612 and $99,971, respectively. The Company recorded gross realized gains of $58 and gross realized losses of $78 during the three months ended September 30, 2020, and gross realized gains of $336 and gross realized losses of $157 during the nine months ended September 30, 2020. There were no debt securities sold during the nine months ended September 30, 2021. The amortized cost and fair value of the U.S. Treasury and Agency securities at September 30, 2021 are shown by contractual maturity in the table below. Mortgage-backed securities, collateralized mortgage obligations and collateralized debt obligations are disclosed separately as the expected maturities may differ from contractual maturities if borrowers have the right to call or prepay obligations with or without call or prepayment penalties. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amortized ​ Fair ​ Cost Value U.S. Treasury & Agency securities ​ ​ Due less than one year ​ $ 50,427 ​ $ 50,458 Due after one year through five years ​ ​ 23,000 ​ ​ 23,048 Mortgage-backed securities ​ ​ 26,833 ​ ​ 26,576 Collateralized mortgage obligations ​ 98,636 ​ 99,151 Collateralized debt obligations ​ 211 ​ 191 Total ​ $ 199,107 ​ $ 199,424 ​ The following table summarizes debt securities available for sale, at fair value, with unrealized losses at September 30, 2021 and December 31, 2020 aggregated by major security type and length of time the individual securities have been in a continuous unrealized loss position: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2021 ​ ​ Less than 12 Months ​ 12 Months or More ​ Total ​ ​ Fair ​ Unrealized ​ Fair ​ Unrealized ​ Fair ​ Unrealized ​ Value Losses Value Losses Value Losses Mortgage-backed securities ​ $ 8,818 ​ $ (314) ​ $ — ​ $ — ​ $ 8,818 ​ $ (314) Collateralized mortgage obligations ​ ​ 47,728 ​ ​ (43) ​ ​ — ​ ​ — ​ ​ 47,728 ​ ​ (43) Collateralized debt obligations ​ — ​ ​ — ​ ​ 191 ​ ​ (20) ​ ​ 191 ​ ​ (20) Total ​ $ 56,546 ​ $ (357) ​ $ 191 ​ $ (20) ​ $ 56,737 ​ $ (377) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ ​ Less than 12 Months ​ 12 Months or More ​ Total ​ ​ Fair ​ Unrealized ​ Fair ​ Unrealized ​ Fair ​ Unrealized ​ Value Losses Value Losses Value Losses Mortgage-backed securities ​ $ 5,694 ​ $ (1) ​ $ — ​ $ — ​ $ 5,694 ​ $ (1) Collateralized mortgage obligations ​ ​ 75,740 ​ ​ (391) ​ ​ — ​ ​ — ​ ​ 75,740 ​ ​ (391) Collateralized debt obligations ​ — ​ — ​ 187 ​ (27) ​ 187 ​ (27) Total ​ $ 81,434 ​ $ (392) ​ $ 187 ​ $ (27) ​ $ 81,621 ​ $ (419) ​ As of September 30, 2021, the debt securities portfolio consisted of 22 debt securities, with ten debt securities in an unrealized loss position. For debt securities in an unrealized loss position, management has both the intent and ability to hold these investments until the recovery of the decline. The fair value is expected to increase as these securities approach their maturity date or repricing date or if market yields for such investments decline. Accordingly, as of September 30, 2021, the unrealized losses in these securities are due to non-credit-related factors, including changes in interest rates and other market conditions; thus, the impairment was determined to be temporary. All interest and dividends are considered taxable. A collateralized debt obligation with a carrying value of $191 and $187 at September 30, 2021 and December 31, 2020, respectively, was rated high quality at inception, but it was subsequently rated by Moody’s as Ba1, which is defined as “speculative.” The issuers of the underlying investments (the collateral) of the collateralized debt obligation are primarily banks. Management uses in-house and third-party other-than-temporary impairment evaluation models to compare the present value of expected cash flows to the previous estimate to ensure there are no adverse changes in cash flows during the period. The other-than-temporary impairment model considers the structure and term of the collateralized debt obligations and the financial condition of the underlying issuers. Assumptions used in the model include expected future default rates and prepayments. The collateralized debt obligation remained classified as available for sale and represented $20 and $27 of the unrealized losses reported at September 30, 2021 and December 31, 2020, respectively. Equity Securities Equity securities consist of an investment in a qualified community reinvestment act investment fund, which is a publicly-traded mutual fund and an investment in the common equity of Pacific Coast Banker’s Bank, a thinly traded restricted stock. At September 30, 2021 and December 31, 2020, equity securities totaled $5,265 and $5,364, respectively, and are included in investment securities in the condensed consolidated balance sheets. Equity securities with readily determinable fair values are stated at fair value with realized and unrealized gains and losses reported in income. At September 30, 2021 and December 31, 2020, equity securities with readily determinable fair values were $5,019 and $5,118, respectively. The following is a summary of unrealized and realized gains and losses recognized in the condensed consolidated statements of operations during the three and nine months ended September 30, 2021 and 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ ​ September 30, ​ September 30, ​ 2021 2020 2021 2020 Net gains (losses) recorded during the period on equity securities ​ $ (24) ​ $ — ​ $ (99) ​ $ 123 Less: net gains (losses) recorded during the period on equity securities sold during the period ​ — ​ ​ — ​ — ​ ​ — Unrealized gains (losses) recorded during the period on equity securities held at the reporting date ​ $ (24) ​ $ — ​ $ (99) ​ $ 123 ​ The Company has elected to account for its investment in a thinly traded, restricted stock using the measurement alternative for equity securities without readily determinable fair values, resulting in the investment carried at cost based on no evidence of impairment or observable trading activity during the nine months ended September 30, 2021 and 2020. The investment was reported at $246 at September 30, 2021 and December 31, 2020.

Loans

Loans	9 Months Ended
	Sep. 30, 2021
Loans
Loans	Note 5—Loans Major categories of loans were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ 2021 2020 Residential real estate ​ $ 1,818,633 ​ $ 2,033,526 Commercial real estate ​ 291,649 ​ 259,958 Construction ​ 126,571 ​ 206,581 Commercial lines of credit ​ 1,923 ​ 6,671 Other consumer ​ 6 ​ 7 Total loans ​ 2,238,782 ​ 2,506,743 Less: allowance for loan losses ​ (70,238) ​ (72,387) Loans, net ​ $ 2,168,544 ​ $ 2,434,356 ​ Loans totaling $479,048 and $630,197 were pledged as collateral on FHLB borrowings at September 30, 2021 and December 31, 2020, respectively. The following tables present the activity in the allowance for loan losses by portfolio segment for the three and nine months ended September 30, 2021 and 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential Commercial ​ Lines of Other ​ ​ ​ ​ Three Months Ended September 30, 2021 ​ Real Estate ​ Real Estate ​ Construction ​ Credit ​ Consumer ​ Unallocated ​ Total Allowance for loan losses: ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 33,064 ​ $ 22,491 ​ $ 15,056 ​ $ 58 ​ $ — ​ $ — ​ $ 70,669 Provision (recovery) for loan losses ​ 109 ​ 1,486 ​ (1,194) ​ (4) ​ — ​ — ​ 397 Charge offs ​ — ​ — ​ (1,965) ​ — ​ — ​ — ​ (1,965) Recoveries ​ 530 ​ 605 ​ 2 ​ — ​ — ​ — ​ 1,137 Total ending balance ​ $ 33,703 ​ $ 24,582 ​ $ 11,899 ​ $ 54 ​ $ — ​ $ — ​ $ 70,238 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential ​ Commercial ​ ​ ​ Lines of ​ Other ​ ​ ​ ​ ​ ​ Nine Months Ended September 30, 2021 Real Estate Real Estate Construction Credit Consumer Unallocated Total Allowance for loan losses: ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 32,366 ​ $ 21,942 ​ $ 17,988 ​ $ 91 ​ $ — ​ $ — ​ $ 72,387 Provision (recovery) for loan losses ​ 16 ​ 2,004 ​ (4,129) ​ (37) ​ — ​ — ​ (2,146) Charge offs ​ — ​ — ​ (1,965) ​ — ​ — ​ — ​ (1,965) Recoveries ​ 1,321 ​ 636 ​ 5 ​ — ​ — ​ — ​ 1,962 Total ending balance ​ $ 33,703 ​ $ 24,582 ​ $ 11,899 ​ $ 54 ​ $ — ​ $ — ​ $ 70,238 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential ​ Commercial ​ ​ ​ ​ Lines of ​ Other ​ ​ ​ ​ ​ ​ Three Months Ended September 30, 2020 Real Estate Real Estate Construction Credit Consumer Unallocated Total Allowance for loan losses: ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 18,812 ​ $ 15,770 ​ $ 11,998 ​ $ 350 ​ $ 1 ​ $ — ​ $ 46,931 Provision (recovery) for loan losses ​ (467) ​ 1,771 ​ 628 ​ 192 ​ (1) ​ — ​ 2,123 Charge offs ​ (108) ​ — ​ (707) ​ — ​ — ​ — ​ (815) Recoveries ​ 3 ​ 14 ​ 2 ​ — ​ — ​ — ​ 19 Total ending balance ​ $ 18,240 ​ $ 17,555 ​ $ 11,921 ​ $ 542 ​ $ — ​ $ — ​ $ 48,258 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential ​ Commercial ​ ​ ​ ​ Lines of ​ Other ​ ​ ​ ​ ​ ​ Nine Months Ended September 30, 2020 Real Estate Real Estate Construction Credit Consumer Unallocated Total Allowance for loan losses: ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 12,336 ​ $ 5,243 ​ $ 3,822 ​ $ 328 ​ $ 1 ​ $ — ​ $ 21,730 Provision (recovery) for loan losses ​ 5,997 ​ 12,262 ​ 8,801 ​ 214 ​ (1) ​ — ​ 27,273 Charge offs ​ (108) ​ — ​ (707) ​ — ​ — ​ — ​ (815) Recoveries ​ 15 ​ 50 ​ 5 ​ — ​ — ​ — ​ 70 Total ending balance ​ $ 18,240 ​ $ 17,555 ​ $ 11,921 ​ $ 542 ​ $ — ​ $ — ​ $ 48,258 ​ The following tables present the balance in the allowance for loan losses and the recorded investment by portfolio segment and based on impairment evaluation method as of September 30, 2021 and December 31, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential ​ Commercial ​ ​ ​ Lines of ​ Other ​ ​ ​ ​ ​ ​ September 30, 2021 Real Estate Real Estate Construction Credit Consumer Unallocated Total Allowance for loan losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Ending allowance balance attributable to loans: ​ ​ ​ ​ ​ ​ ​ ​ Individually evaluated for impairment ​ $ 160 ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ 160 Collectively evaluated for impairment ​ ​ 33,543 ​ ​ 24,582 ​ ​ 11,899 ​ ​ 54 ​ ​ — ​ ​ — ​ ​ 70,078 Total ending allowance balance ​ $ 33,703 ​ $ 24,582 ​ $ 11,899 ​ $ 54 ​ $ — ​ $ — ​ $ 70,238 Loans: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Loans individually evaluated for impairment ​ $ 364 ​ $ 13,634 ​ $ 28,071 ​ $ 118 ​ $ — ​ $ — ​ $ 42,187 Loans collectively evaluated for impairment ​ 1,818,269 ​ 278,015 ​ 98,500 ​ 1,805 ​ 6 ​ — ​ 2,196,595 Total ending loans balance ​ $ 1,818,633 ​ $ 291,649 ​ $ 126,571 ​ $ 1,923 ​ $ 6 ​ $ — ​ $ 2,238,782 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential ​ Commercial ​ ​ ​ Lines of ​ Other ​ ​ ​ ​ ​ ​ December 31, 2020 Real Estate Real Estate Construction Credit Consumer Unallocated Total Allowance for loan losses: ​ ​ ​ ​ ​ ​ ​ Ending allowance balance attributable to loans: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Individually evaluated for impairment ​ $ 41 ​ $ 287 ​ $ 1,905 ​ $ 4 ​ $ — ​ $ — ​ $ 2,237 Collectively evaluated for impairment ​ ​ 32,325 ​ ​ 21,655 ​ ​ 16,083 ​ ​ 87 ​ ​ — ​ ​ — ​ ​ 70,150 Total ending allowance balance ​ $ 32,366 ​ $ 21,942 ​ $ 17,988 ​ $ 91 ​ $ — ​ $ — ​ $ 72,387 Loans: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Loans individually evaluated for impairment ​ $ 208 ​ $ 20,974 ​ $ 48,871 ​ $ 3,981 ​ $ — ​ $ — ​ $ 74,034 Loans collectively evaluated for impairment ​ 2,033,318 ​ 238,984 ​ 157,710 ​ 2,690 ​ 7 ​ — ​ 2,432,709 Total ending loans balance ​ $ 2,033,526 ​ $ 259,958 ​ $ 206,581 ​ $ 6,671 ​ $ 7 ​ $ — ​ $ 2,506,743 ​ The following tables present information related to impaired loans by class of loans as of and for the periods indicated: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ At September 30, 2021 ​ At December 31, 2020 ​ ​ Unpaid ​ ​ ​ ​ Allowance ​ Unpaid ​ ​ ​ ​ Allowance ​ ​ Principal ​ Recorded ​ for Loan ​ Principal ​ Recorded ​ for Loan ​ Balance Investment Losses Balance Investment Losses With no related allowance for loan losses recorded: ​ ​ ​ ​ ​ ​ ​ Residential real estate, first mortgage ​ $ 106 ​ $ 82 ​ $ — ​ $ 116 ​ $ 94 ​ $ — Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ — Retail ​ ​ 5 ​ ​ 5 ​ ​ — ​ ​ 1,247 ​ ​ 1,029 ​ ​ — Hotels/Single-room occupancy hotels ​ ​ 10,800 ​ ​ 10,861 ​ ​ — ​ ​ 11,428 ​ ​ 11,419 ​ ​ — Office ​ ​ 2,768 ​ ​ 2,768 ​ ​ — ​ ​ — ​ ​ — ​ ​ — Construction ​ ​ 28,140 ​ ​ 28,071 ​ ​ — ​ ​ 42,669 ​ ​ 41,951 ​ ​ — Commercial lines of credit, private banking ​ ​ 118 ​ ​ 118 ​ ​ — ​ ​ 3,857 ​ ​ 3,857 ​ ​ — Subtotal ​ 41,937 ​ 41,905 ​ — ​ 59,317 ​ 58,350 ​ — With an allowance for loan losses recorded: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential real estate, first mortgage ​ 274 ​ 282 ​ 160 ​ 114 ​ 114 ​ 41 Commercial real estate, hotels/single-room occupancy hotels ​ ​ — ​ ​ — ​ ​ — ​ ​ 8,645 ​ ​ 8,526 ​ ​ 287 Construction ​ — ​ — ​ — ​ 6,920 ​ 6,920 ​ 1,905 Commercial lines of credit, private banking ​ ​ — ​ ​ — ​ ​ — ​ ​ 124 ​ ​ 124 ​ ​ 4 Subtotal ​ 274 ​ 282 ​ 160 ​ 15,803 ​ 15,684 ​ 2,237 Total ​ $ 42,211 ​ $ 42,187 ​ $ 160 ​ $ 75,120 ​ $ 74,034 ​ $ 2,237 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, ​ ​ 2021 ​ 2020 ​ ​ Average ​ Interest ​ Cash Basis ​ Average ​ Interest ​ Cash Basis ​ ​ Recorded ​ Income ​ Interest ​ Recorded ​ Income ​ Interest ​ Investment Recognized Recognized Investment Recognized Recognized With no related allowance for loan losses recorded: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential real estate, first mortgage ​ $ 82 ​ $ — ​ $ — ​ $ 95 ​ $ — ​ $ — Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Retail ​ 7 ​ ​ — ​ ​ — ​ ​ 1,050 ​ ​ 14 ​ ​ 10 Hotels/Single-room occupancy hotels ​ ​ 10,862 ​ ​ — ​ ​ — ​ ​ 13,090 ​ ​ — ​ ​ — Office ​ ​ 2,769 ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — Construction ​ ​ 18,820 ​ ​ 40 ​ ​ 27 ​ ​ 46,310 ​ ​ 221 ​ ​ 92 Commercial lines of credit: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Private banking ​ ​ 119 ​ ​ 2 ​ ​ 1 ​ ​ — ​ ​ — ​ ​ — C&I lending ​ ​ — ​ ​ — ​ ​ — ​ ​ 1,151 ​ ​ — ​ ​ — Subtotal ​ ​ 32,659 ​ ​ 42 ​ ​ 28 ​ 61,696 ​ 235 ​ 102 With an allowance for loan losses recorded: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential real estate, first mortgage ​ ​ 279 ​ ​ 1 ​ ​ 1 ​ 115 ​ 1 ​ 1 Construction ​ ​ 10,387 ​ ​ 56 ​ ​ 38 ​ ​ — ​ ​ — ​ ​ — Commercial lines of credit, private banking ​ ​ — ​ ​ — ​ ​ — ​ ​ 128 ​ ​ 2 ​ ​ 1 Subtotal ​ ​ 10,666 ​ ​ 57 ​ ​ 39 ​ 243 ​ 3 ​ 2 Total ​ $ 43,325 ​ $ 99 ​ $ 67 ​ $ 61,939 ​ $ 238 ​ $ 104 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Nine Months Ended September 30, ​ ​ 2021 ​ 2020 ​ ​ Average ​ Interest ​ Cash Basis ​ Average ​ Interest ​ Cash Basis ​ ​ Recorded ​ Income ​ Interest ​ Recorded ​ Income ​ Interest ​ Investment Recognized Recognized Investment Recognized Recognized With no related allowance for loan losses recorded: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential real estate, first mortgage ​ $ 88 ​ $ — ​ $ — ​ $ 98 ​ $ — ​ $ — Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Retail ​ 765 ​ ​ — ​ ​ — ​ ​ 1,079 ​ ​ 43 ​ ​ 39 Hotels/Single-room occupancy hotels ​ ​ 17,948 ​ ​ — ​ ​ — ​ ​ 13,085 ​ ​ — ​ ​ — Office ​ ​ 2,768 ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — Other ​ ​ 91 ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — Construction ​ ​ 27,387 ​ ​ 192 ​ ​ 179 ​ ​ 44,637 ​ ​ 1,031 ​ ​ 760 Commercial lines of credit: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Private banking ​ ​ 1,264 ​ ​ 7 ​ ​ 7 ​ ​ 934 ​ ​ 42 ​ ​ 35 C&I lending ​ ​ — ​ ​ — ​ ​ — ​ ​ 1,250 ​ ​ — ​ ​ — Subtotal ​ ​ 50,311 ​ ​ 199 ​ ​ 186 ​ 61,083 ​ 1,116 ​ 834 With an allowance for loan losses recorded: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential real estate, first mortgage ​ ​ 280 ​ ​ 3 ​ ​ 3 ​ 116 ​ 4 ​ 3 Construction ​ ​ 9,751 ​ ​ 181 ​ ​ 163 ​ ​ — ​ ​ — ​ ​ — Commercial lines of credit, private banking ​ ​ — ​ ​ — ​ ​ — ​ ​ 129 ​ ​ 5 ​ ​ 4 Subtotal ​ ​ 10,031 ​ ​ 184 ​ ​ 166 ​ 245 ​ 9 ​ 7 Total ​ $ 60,342 ​ $ 383 ​ $ 352 ​ $ 61,328 ​ $ 1,125 ​ $ 841 ​ In the tables above, the unpaid principal balance is not reduced for partial charge offs. Also, the recorded investment excludes accrued interest receivable on loans, which was not significant. Also presented in the table above is the average recorded investment of the impaired loans and the related amount of interest recognized during the time within the period that the impaired loans were impaired. When the ultimate collectability of the total principal of an impaired loan is in doubt and the loan is on nonaccrual status, all payments are applied to principal under the cost recovery method. When the ultimate collectability of the total principal of an impaired loan is not in doubt and the loan is on nonaccrual status, contractual interest is credited to interest income when received under the cash basis method. The average balances are calculated based on the month-end balances of the loans for the period reported. The following table presents the recorded investment in nonaccrual and loans past due over 90 days still on accrual by class of loans as of September 30, 2021 and December 31, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2021 ​ December 31, 2020 ​ ​ ​ ​ ​ Loans Past ​ ​ ​ ​ Loans Past ​ ​ ​ ​ ​ Due Over ​ ​ ​ ​ Due Over ​ ​ ​ ​ ​ 90 Days Still ​ ​ ​ ​ 90 Days Still ​ Nonaccrual Accruing Nonaccrual Accruing Residential real estate: ​ ​ ​ ​ ​ Residential first mortgage ​ $ 41,407 ​ $ 44 ​ $ 20,043 ​ $ 46 Residential second mortgage ​ ​ 236 ​ ​ — ​ ​ 686 ​ ​ — Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Retail ​ 5 ​ — ​ 20 ​ ​ — Multifamily ​ ​ — ​ ​ — ​ ​ — ​ ​ — Offices ​ ​ 2,768 ​ ​ — ​ ​ — ​ ​ — Hotels/Single-room occupancy hotels ​ ​ 10,861 ​ ​ — ​ ​ 19,945 ​ ​ — Construction ​ ​ 22,076 ​ ​ — ​ ​ 41,873 ​ ​ — Commercial lines of credit: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Private banking ​ ​ — ​ ​ — ​ ​ 2,285 ​ ​ — C&I lending ​ ​ — ​ ​ — ​ ​ 1,572 ​ ​ — Total ​ $ 77,353 ​ $ 44 ​ $ 86,424 ​ $ 46 ​ The following tables present the aging of the recorded investment in past due loans as of September 30, 2021 and December 31, 2020 by class of loans: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Greater ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30 - 59 ​ 60 - 89 ​ than ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days ​ Days ​ 89 Days ​ Total ​ Loans Not ​ ​ ​ September 30, 2021 Past Due Past Due Past Due Past Due Past Due Total Residential real estate: ​ ​ ​ ​ ​ ​ Residential first mortgage ​ $ 30,651 ​ $ 8,886 ​ $ 41,451 ​ $ 80,988 ​ $ 1,723,130 ​ $ 1,804,118 Residential second mortgage ​ 157 ​ — ​ 236 ​ 393 ​ 14,122 ​ 14,515 Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Retail ​ — ​ — ​ 5 ​ 5 ​ 15,392 ​ 15,397 Multifamily ​ — ​ 1,519 ​ — ​ 1,519 ​ 125,725 ​ 127,244 Offices ​ — ​ — ​ 2,768 ​ 2,768 ​ 20,499 ​ 23,267 Hotels/Single-room occupancy hotels ​ — ​ — ​ 10,861 ​ 10,861 ​ 66,932 ​ 77,793 Industrial ​ — ​ — ​ — ​ — ​ 5,845 ​ 5,845 Other ​ — ​ 140 ​ — ​ 140 ​ 41,963 ​ 42,103 Construction ​ ​ 6,533 ​ ​ — ​ ​ 22,076 ​ ​ 28,609 ​ ​ 97,962 ​ ​ 126,571 Commercial lines of credit: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Private banking ​ — ​ — ​ — ​ — ​ 118 ​ 118 C&I lending ​ — ​ — ​ — ​ — ​ 1,805 ​ 1,805 Other consumer ​ — ​ — ​ — ​ — ​ 6 ​ 6 Total ​ $ 37,341 ​ $ 10,545 ​ $ 77,397 ​ $ 125,283 ​ $ 2,113,499 ​ $ 2,238,782 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Greater ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30 - 59 ​ 60 - 89 ​ than ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days ​ Days ​ 89 Days ​ Total ​ Loans Not ​ ​ ​ December 31, 2020 Past Due Past Due Past Due Past Due Past Due Total Residential real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential first mortgage ​ $ 37,819 ​ $ 14,524 ​ $ 20,089 ​ $ 72,432 ​ $ 1,943,602 ​ $ 2,016,034 Residential second mortgage ​ 362 ​ 134 ​ 686 ​ 1,182 ​ 16,310 ​ 17,492 Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Retail ​ 1,010 ​ — ​ 20 ​ 1,030 ​ 15,170 ​ 16,200 Multifamily ​ 3,835 ​ — ​ — ​ 3,835 ​ 75,374 ​ 79,209 Offices ​ — ​ — ​ — ​ — ​ 27,061 ​ 27,061 Hotels/Single-room occupancy hotels ​ — ​ — ​ 19,945 ​ 19,945 ​ 47,690 ​ 67,635 Industrial ​ — ​ — ​ — ​ — ​ 13,186 ​ 13,186 Other ​ — ​ — ​ — ​ — ​ 56,667 ​ 56,667 Construction ​ 8,593 ​ 2,514 ​ 41,873 ​ 52,980 ​ 153,601 ​ 206,581 Commercial lines of credit: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Private banking ​ — ​ — ​ 2,285 ​ 2,285 ​ 124 ​ 2,409 C&I lending ​ — ​ — ​ 1,572 ​ 1,572 ​ 2,690 ​ 4,262 Other consumer ​ — ​ — ​ — ​ — ​ 7 ​ 7 Total ​ $ 51,619 ​ $ 17,172 ​ $ 86,470 ​ $ 155,261 ​ $ 2,351,482 ​ $ 2,506,743 ​ The aging of the loans in the table above as of September 30, 2021 has not been adjusted for customers granted a payment deferral in response to COVID-19. These loans remain in the aging category that was applicable at the time of payment deferral. Interest continues to accrue on these loans. Refer to—Forbearance Loans for further information. The Company considers the performance of the loan portfolio and its impact on the allowance for loan losses. For residential real estate and other consumer loans, the Company also evaluates credit quality based on the aging status of the loan, which is presented above, and by payment activity. The Company reviews the status of nonperforming loans, which include loans 90 days past due and still accruing and nonaccrual loans. Troubled Debt Restructurings At September 30, 2021 and December 31, 2020, the balance of outstanding loans identified as troubled debt restructurings, along with the allocated portion of the allowance for loan losses with respect to these loans, was as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2021 ​ December 31, 2020 ​ ​ Recorded ​ Allowance for ​ Recorded ​ Allowance for ​ Investment Loan Losses Investment Loan Losses Residential real estate, first mortgage $ 197 $ 39 ​ $ 209 ​ $ 41 Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ Retail ​ ​ 5 ​ ​ — ​ ​ 1,029 ​ ​ — Hotels/Single-room occupancy hotels (1) ​ ​ 2,389 ​ ​ — ​ ​ — ​ ​ — Construction ​ 18,021 ​ — ​ 26,985 ​ 1,906 Commercial lines of credit, private banking ​ 118 ​ — ​ 124 ​ 4 Total ​ $ 20,730 ​ $ 39 ​ $ 28,347 ​ $ 1,951 (1) The recorded investment related to Hotels/Single-room occupancy hotels was reflected in Construction loans at December 31, 2020 . There were no loans modified as troubled debt restructurings during the nine months ended September 30, 2021. During the nine months ended September 30, 2021, there were two construction loans totaling $10,275 and one commercial real estate loan of $2,389 that had defaulted for which the default occurred within one year of modification. At September 30, 2021, there were six loans totaling $18,012 in default that had been modified as troubled debt restructurings. During the nine months ended September 30, 2020, the Bank modified the terms of three construction loans and one private banking loan by providing for an extension of the maturity dates at the contract’s existing rate of interest, which is lower than the current market rate for new debt with similar risk. The outstanding recorded investment was $13,777 both before and after modification. During the nine months ended September 30, 2020, there were four construction loans totaling $12,482 identified as a troubled debt restructurings that had defaulted for which the payment default occurred within one year of modification. The terms of certain other loans have been modified during the nine months ended September 30, 2021 and 2020 that did not meet the definition of a troubled debt restructuring. These other loans that were modified were not considered significant. Forbearance Loans As a response to the COVID-19 pandemic, the Company had offered forbearance under the CARES Act to customers facing COVID-19-related financial difficulties. The CARES Act created a forbearance program for impacted borrowers and imposed a temporary 60-day moratorium on foreclosures and foreclosure-related evictions related to federally backed mortgage loans, which include loans secured by a first or subordinate lien on residential one-to-four family real property that have been purchased by Fannie Mae or Freddie Mac, are insured by HUD or are insured or guaranteed by other listed agencies. Borrowers of such federally backed mortgage loans experiencing a financial hardship as a result of COVID-19 may request forbearance, regardless of delinquency status, for up to 360 days. Subsequently, the federal agencies as well as the state of California announced extensions of their moratoria on single-family foreclosures and evictions and Federal Housing Administration insured loans through September 30, 2021. On August 3, 2021, the U.S. Centers for Disease and Control issued a temporary extension of the moratoria on evictions of certain covered persons in counties with heightened levels of community transmission of COVID-19 through October 3, 2021. Certain provisions of the CARES Act, as amended in December 2020 by the Consolidated Appropriations Act of 2021, encourage financial institutions to practice prudent efforts to work with borrowers impacted by the COVID-19 pandemic. Under these provisions, a modification deemed to be COVID-19-related would not be considered a troubled debt restructuring if the loan was not more than 30 days past due as of December 31, 2019 and the deferral was executed between March 1, 2020 and the earlier of 60 days after the date of termination of the COVID-19 national emergency or January 1, 2022. The banking regulators issued similar guidance, which also clarified that short-term modifications made on a good faith basis in response to COVID-19 to borrowers who were current prior to any relief are not troubled debt restructurings. In this context, the Company implemented a COVID-19 forbearance program that generally provided for principal and interest forbearance for 120 days to residential borrowers with extensions available to qualified borrowers available for up to a maximum deferral period of twelve months, and these loans were not considered troubled debt restructurings. Under the forbearance program, interest continues to accrue at the note rate. At the end of the forbearance period, the borrower’s accrued but unpaid interest will be added to their outstanding principal balance while keeping the principal and interest payment at the amount determined in accordance with the terms of the note, thus extending the loan’s maturity date. The terms of commercial loan forbearances were reviewed and determined on a case-by-case basis, and these loans were not considered troubled debt restructurings. The Bank terminated the forbearance program, effective July 31, 2021. Forbearance loans under the CARES program totaled Foreclosure Proceedings At September 30, 2021 and December 31, 2020, the recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are in process totaled $2,071 and $5,320, respectively. Of the loans in formal foreclosure proceedings, $2,061 and $3,209 were included in mortgage loans held for sale in the condensed consolidated balance sheets at September 30, 2021 and December 31, 2020, respectively, and were carried at the lower of amortized cost or fair value. The balance of loans are classified as held for investment and receive an allocation of the allowance for loan losses consistent with a substandard loan loss allocation rate as these loans were classified as substandard at September 30, 2021 and December 31, 2020. Credit Quality The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt such as: current financial information, historical payment experience, credit documentation, public information, and current economic trends, among other factors. The Company analyzes loans individually by classifying the loans as to credit risk. This analysis includes homogeneous loans, such as residential real estate and other consumer loans, and non-homogeneous loans, such as commercial lines of credit, construction and commercial real estate loans. This analysis is performed at least quarterly. The Company uses the following definitions for risk ratings: Pass: Loans are of satisfactory quality. Special Mention: Loans classified as special mention have a potential weakness that deserves management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or of the Company’s credit position at some future date. Substandard: Loans classified 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 classified have a well-defined weakness or weaknesses that jeopardize the liquidation of the loan. They are characterized by the distinct possibility that the Company 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, based on currently existing facts, conditions and values, highly questionable and improbable. At September 30, 2021 and December 31, 2020, the risk rating of loans by class of loans was as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Special ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2021 Pass Mention Substandard Doubtful Total Residential real estate: ​ ​ ​ ​ ​ ​ Residential first mortgage ​ $ 1,762,667 ​ $ — ​ $ 41,202 ​ $ 249 ​ $ 1,804,118 Residential second mortgage ​ 14,279 ​ — ​ 236 ​ — ​ 14,515 Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Retail ​ 13,853 ​ 1,539 ​ 5 ​ — ​ 15,397 Multifamily ​ 88,707 ​ 8,894 ​ 29,643 ​ — ​ 127,244 Offices ​ 9,532 ​ 8,938 ​ 4,797 ​ — ​ 23,267 Hotels/ Single-room occupancy hotels ​ 16,278 ​ 22,199 ​ 39,316 ​ — ​ 77,793 Industrial ​ 5,845 ​ — ​ — ​ — ​ 5,845 Other ​ 30,633 ​ 7,061 ​ 4,409 ​ — ​ 42,103 Construction ​ 75,156 ​ 20,178 ​ 25,331 ​ 5,906 ​ 126,571 Commercial lines of credit: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Private banking ​ 118 ​ — ​ — ​ — ​ 118 C&I lending ​ 1,783 ​ 22 ​ — ​ — ​ 1,805 Consumer ​ 6 ​ — ​ — ​ — ​ 6 Total ​ $ 2,018,857 ​ $ 68,831 ​ $ 144,939 ​ $ 6,155 ​ $ 2,238,782 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Special ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 Pass Mention Substandard Doubtful Total Residential real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential first mortgage ​ $ 1,995,945 ​ $ — ​ $ 19,995 ​ $ 94 ​ $ 2,016,034 Residential second mortgage ​ 16,806 ​ — ​ 686 ​ — ​ 17,492 Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Retail ​ 13,599 ​ 1,572 ​ 1,029 ​ — ​ 16,200 Multifamily ​ 55,772 ​ 14,238 ​ 9,199 ​ — ​ 79,209 Offices ​ 12,014 ​ 1,623 ​ 13,424 ​ — ​ 27,061 Hotels/ Single-room occupancy hotels ​ 9,115 ​ 17,984 ​ 40,536 ​ — ​ 67,635 Industrial ​ 5,867 ​ — ​ 7,319 ​ — ​ 13,186 Other ​ 43,193 ​ 7,732 ​ 5,742 ​ — ​ 56,667 Construction ​ 152,577 ​ 14,234 ​ 32,850 ​ 6,920 ​ 206,581 Commercial lines of credit: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Private banking ​ 124 ​ 2,285 ​ — ​ — ​ 2,409 C&I lending ​ 3,573 ​ — ​ 689 ​ — ​ 4,262 Other consumer ​ 7 ​ — ​ — ​ — ​ 7 Total ​ $ 2,308,592 ​ $ 59,668 ​ $ 131,469 ​ $ 7,014 ​ $ 2,506,743 ​ During the three and nine months ended September 30, 2021, the Bank repurchased pools of Advantage Loan Program loans with a total outstanding principal balance of $6,067 and $173,829, respectively. During the three and nine months ended September 30, 2020, the Bank repurchased pools of Advantage Loan Program loans with a total outstanding principal balance of $30,934 and $69,638, respectively. The repurchased Advantage Loan Program loans are recorded in loans held for investment. Any loss on the repurchase of the Advantage Loan Program loans is charged against the mortgage repurchase liability. The disposition of the mortgage servicing rights related to servicing the respective loans (as mortgage servicing of these loans was retained at the time of sale) is recorded in net servicing loss in non-interest income in the condensed consolidated statements of operations. The Advantage Loan Program loans that have been repurchased and included in the loan portfolio had an outstanding principal balance of $192,683 and $57,039 at September 30, 2021 and December 31, 2020, respectively. For more information on the repurchases of mortgage loans, refer to Note 16—Commitments and Contingencies.

Mortgage Servicing Rights, net

Mortgage Servicing Rights, net	9 Months Ended
	Sep. 30, 2021
Mortgage Servicing Rights, net
Mortgage Servicing Rights, net	Note 6—Mortgage Servicing Rights, net The Bank records servicing assets from the sale of residential real estate mortgage loans to the secondary market for which servicing has been retained. Residential real estate mortgage loans serviced for others are not included in the condensed consolidated balance sheets. The principal balance of these loans at September 30, 2021 and December 31, 2020 are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ 2021 2020 Residential real estate mortgage loan portfolios serviced for: ​ ​ FNMA ​ $ 132,829 ​ $ 171,553 FHLB ​ 44,179 ​ 64,661 Private investors ​ 159,935 ​ 429,816 Total ​ $ 336,943 ​ $ 666,030 ​ Custodial escrow balances maintained with these serviced loans were $5,073 and $6,051 at September 30, 2021 and December 31, 2020, respectively. Activity for mortgage servicing rights and the related valuation allowance are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ ​ September 30, ​ September 30, ​ 2021 2020 2021 2020 Mortgage servicing rights: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning of period ​ $ 4,200 ​ $ 9,569 ​ $ 7,853 ​ $ 10,845 Additions ​ ​ 25 ​ ​ 119 ​ 124 ​ 609 Amortization ​ ​ (550) ​ ​ (1,123) ​ (4,302) ​ (2,889) End of period ​ ​ 3,675 ​ ​ 8,565 ​ 3,675 ​ 8,565 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Valuation allowance at beginning of period ​ ​ 968 ​ ​ 2,303 ​ 2,165 ​ 1,080 Additions (recoveries) ​ ​ (166) ​ ​ (161) ​ (1,363) ​ 1,062 Valuation allowance at end of period ​ ​ 802 ​ ​ 2,142 ​ 802 ​ 2,142 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Mortgage servicing rights, net ​ $ 2,873 ​ $ 6,423 ​ $ 2,873 ​ $ 6,423 ​ Servicing fee income, net of amortization of servicing rights and changes in the valuation allowance, was $(31) and $(121) for the three months ended September 30, 2021 and 2020, respectively, and $(1,369) and $(1,239) for the nine months ended September 30, 2021 and 2020, respectively. The fair value of mortgage servicing rights was $3,338 and $5,841 at September 30, 2021 and December 31, 2020, respectively. The fair value of mortgage servicing rights is highly sensitive to changes in underlying assumptions. Changes in prepayment speed assumptions have the most significant impact on the estimate of the fair value of mortgage servicing rights. The fair value at September 30, 2021 was determined using discount rates ranging from 9.5% to 12.0%, prepayment speeds with a weighted average of 18.5% (depending on the stratification of the specific right), a weighted average life of the mortgage servicing right of 50 months and a weighted average default rate of 0.2%. The fair value at December 31, 2020 was determined using discount rates ranging from 9.5% to 12.0%, prepayment speeds with a weighted average of 22.5% (depending on the stratification of the specific right), a weighted average life of the mortgage servicing right of 43 months and a weighted average default rate of 0.2%. Impairment is determined by stratifying the mortgage servicing rights into groupings based on predominant risk characteristics, such as interest rate, loan type and investor type. At September 30, 2021 and December 31, 2020, the carrying amount of certain individual groupings exceeded their fair values, resulting in write-downs to fair value. Refer to Note 13 —

Deposits

Deposits	9 Months Ended
	Sep. 30, 2021
Deposits
Deposits	Note 7—Deposits Time deposits, included in interest-bearing deposits, were $961,691 and $1,646,523 at September 30, 2021 and December 31, 2020, respectively. Time deposits included brokered deposits of $20,000 and $42,751 at September 30, 2021 and December 31, 2020, respectively. Time deposits that meet or exceed the FDIC insurance limit of $250 were $267,582 and $487,340 at September 30, 2021 and December 31, 2020, respectively.

FHLB Borrowings

FHLB Borrowings	9 Months Ended
	Sep. 30, 2021
FHLB Borrowings
FHLB Borrowings	Note 8—FHLB Borrowings FHLB borrowings at September 30, 2021 and December 31, 2020 consist of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ ​ ​ December 31, ​ ​ ​ 2021 Interest Rates 2020 Interest Rates Long-term fixed rate advances ​ $ 307,000 0.43%-1.96% ​ $ 318,000 0.43%-1.96% ​ FHLB Advances The long-term fixed rate advances have maturity dates ranging from September 2026 to February 2030. Interest on these advances is payable monthly, and each advance is payable at its maturity date and may contain a prepayment penalty if paid before maturity. At September 30, 2021, advances totaling $240,000 were callable by the FHLB as follows: $90,000 in October 2021; $100,000 in November 2021; and $50,000 in May 2024. At September 30, 2021, the Bank had additional borrowing capacity of $31,074 from the FHLB. FHLB Overdraft Line of Credit and Letters of Credit The Bank has established an overdraft line of credit agreement with the FHLB providing for maximum borrowings of $50,000. The average amount outstanding during the nine months ended September 30, 2021 and 2020 was $9 and $24, respectively. Borrowings accrue interest based on a variable rate based on the FHLB’s overnight cost of funds rate, which was 0.43% and 0.46% at September 30, 2021 and December 31, 2020, respectively. At September 30, 2021 and December 31, 2020, there were no outstanding borrowings under this agreement. The agreement has a one-year term and was renewed in October 2021. The overdraft line of credit was renewed on substantially the same terms through October of 2022 and provides for maximum borrowings of $20,000. The Bank also has irrevocable standby letters of credit with the FHLB totaling $11,500 to provide credit support for certain of its obligations related to its commitment to repurchase certain pools of Advantage Loan Program loans. An irrevocable standby letter of credit of $7,500 has a 16-month term and expires in July 2022. An irrevocable standby letter of credit of $4,000 has a 36-month term and expires in July 2024. There were no borrowings outstanding on these standby letters of credit during the nine months ended September 30, 2021. The FHLB advances, the overdraft line of credit and letters of credit are collateralized by pledged securities and loans. Refer to Note 4—Investment Securities for further information on securities pledged and Note 5—Loans for further information on loans pledged. Other Borrowings The Bank had available unsecured credit lines with other banks totaling $80,000 and $100,000 at September 30, 2021 and December 31, 2020, respectively. There were no borrowings under these credit lines during the nine months ended September 30, 2021 and 2020.

Subordinated Notes, net

Subordinated Notes, net	9 Months Ended
	Sep. 30, 2021
Subordinated Notes, net
Subordinated Notes, net	Note 9—Subordinated Notes, net The subordinated notes (the “Notes”) were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ 2021 2020 Subordinated notes (principal amount) ​ $ 65,000 ​ $ 65,000 Unamortized note premium ​ 360 ​ 411 Unamortized debt issuance costs ​ — ​ (70) Total ​ $ 65,360 ​ $ 65,341 ​ The Notes bore interest at 7% per annum, payable semi-annually on April 15 and October 15 in arrears, through April 2021, after which the Notes have a variable interest rate of the three-month LIBOR rate plus a margin of 5.82%. The interest rate was 5.95% and 7.0 % at September 30, 2021 and December 31, 2020, respectively. Premiums and debt issuance costs are amortized over the contractual term of the Notes into interest expense using the effective interest method. Interest expense on these Notes was $972 and $1,178 for the three months ended September 30, 2021 and 2020, respectively, and $3,157 and $3,533 for the nine months ended September 30, 2021 and 2020, respectively. The Notes mature in April 2026. On or after April 14, 2021, the Company may redeem the Notes, in whole or in part, at an amount equal to 100% of the outstanding principal amount being redeemed plus accrued interest, in a principal amount with integral multiples of $1. There have been no redemptions of the Notes. The Notes are not subject to redemption by the noteholders. The Notes are unsecured obligations and are subordinated in right of payment to all existing and future indebtedness, deposits and other liabilities of the Company’s current and future subsidiaries, including the Bank’s deposits as well as the Company’s subsidiaries’ liabilities to general creditors and liabilities arising during the ordinary course of business. The Notes may be included in Tier 2 capital for the Company under current regulatory guidelines and interpretations. As long as the Notes are outstanding, the Company is permitted to pay dividends if prior to such dividends, the Bank is considered well capitalized, as defined by regulatory guidelines. The Company currently may not issue new debt without the prior approval of the FRB.

Shareholders' Equity

Shareholders' Equity	9 Months Ended
	Sep. 30, 2021
Shareholders' Equity
Shareholders' Equity	Note 10— Shareholders’ Equity Issuance of Shares of Common Stock ​ In May 2021, the Company issued and sold 300,000 unregistered shares of common stock to its Chief Executive Officer pursuant to the terms of a stock purchase agreement entered into at the time of the chief executive officer’s employment for cash consideration of $1,350 or $4.50 per share, the fair market value on the date of sale. Stock Repurchase Program The board of directors previously approved the repurchase of up to $50,000 of the Company’s outstanding shares of common stock. The stock repurchase program permits the Company to purchase shares of its common stock from time to time in the open market or in privately negotiated transactions. The program does not have an expiration date. Under this program, the Company is not obligated to repurchase shares of its common stock. The repurchased shares will be canceled and returned to authorized but unissued status. In March 2020, the Company suspended the stock repurchase program for at least the near term in connection with the issues related to the Advantage Loan Program. Refer to Note 16-Commitments and Contingencies for further information regarding the internal review of the Advantage Loan Program (the “Internal Review” During the nine months ended September 30, 2020, the Company repurchased and cancelled 10,912 shares of its common stock for $82, including commissions and fees (average repurchase price of $7.57 per share). Such repurchases of common stock were funded through cash generated from operations. As of September 30, 2021, the Company had $19,568 of common stock purchases remaining that may be made under the program.

Stock-based Compensation

Stock-based Compensation	9 Months Ended
	Sep. 30, 2021
Stock-based Compensation
Stock-based Compensation	Note 11—Stock-based Compensation The board of directors established the 2020 Omnibus Equity Incentive Plan (the “2020 Plan”), which was approved by the shareholders in December 2020. The 2020 Plan provides for the grant of up to 3,979,661 shares of common stock for stock options, stock appreciation rights, restricted stock, restricted stock units, performance units and performance shares for issuance to employees, consultants and the board of directors of the Company. The stock-based awards are issued at no less than the market price on the date the awards are granted. Previously, the board of directors had established a 2017 Omnibus Equity Incentive Plan (the “2017 Plan”) which was approved by the shareholders. The 2017 Plan initially provided for the grant of up to 4,237,100 shares of common stock for stock options, stock appreciation rights, restricted stock, restricted stock units and other stock-based awards for issuance to employees, consultants and the board of directors of the Company. The stock-based awards were issued at no less than the market price on the date the awards were granted. Due to the adoption of the 2020 Plan, no further grants will be issued under the 2017 Plan. Stock Options Stock option awards are granted with an exercise price equal to the market price of the Company’s common stock on the date of grant. Starting in 2020, stock option awards vest ratably over three years ( one - third per year ) after the date of grant, while stock option awards granted prior to 2020 generally vest in installments of 50% in each of the third and fourth year after the date of grant. All stock option awards have a maximum term of ten years . The fair value of each stock option award is estimated on the date of grant using the Black-Scholes option pricing model that uses the assumptions noted below. Estimating the grant date fair values for employee stock options requires management to make assumptions regarding expected volatility of the value of those underlying shares, the risk-free rate over the expected life of the stock options and the date on which share-based payments will be settled. Expected volatilities are based on a weighted average of the Company’s historic volatility and an implied volatility for a group of industry-relevant bank holding companies as of the measurement date. The expected term of options granted is calculated using the simplified method (the midpoint between the end of the vesting period and the end of the maximum term). The risk-free rate for the expected term of the option is based upon the U.S. Treasury yield curve in effect at the time of grant. Expected dividend yield represents what the Company anticipates will be declared during the expected term of the options. A summary of the Company’s stock option activity as of and for the nine months ended September 30, 2021 is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted ​ ​ ​ ​ ​ ​ Weighted ​ Average ​ ​ ​ ​ ​ ​ Average ​ Remaining ​ Aggregate ​ ​ Number ​ Exercise ​ Contractual ​ Intrinsic ​ of Shares Price Term Value ​ ​ ​ ​ ​ ​ ​ (Years) ​ ​ Outstanding at January 1, 2021 ​ 377,882 $ 5.61 ​ 9.09 ​ $ — Granted ​ — ​ ​ — ​ ​ ​ ​ ​ Exercised ​ — ​ ​ — ​ ​ ​ ​ ​ Forfeited/expired ​ (10,115) ​ ​ 12.62 ​ ​ ​ ​ ​ Outstanding at September 30, 2021 ​ 367,767 ​ $ 5.41 ​ 8.39 ​ $ 348 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Exercisable at September 30, 2021 ​ 226,550 $ 4.98 ​ 8.47 $ 232 ​ The Company recorded stock-based compensation expense associated with stock options of $34 and $57 for the three months ended September 30, 2021 and 2020, respectively, and $137 and $112 for the nine months ended September 30, 2021 and 2020, respectively. At September 30, 2021, there was $66 of total unrecognized compensation cost related to nonvested stock options. The unrecognized compensation cost related to nonvested stock options is expected to be recognized over a weighted-average period of 0.75 years. Restricted Stock Awards During the nine months ended September 30, 2021, the Company awarded 45,000 shares of restricted stock to non-employee independent directors and awarded 189,996 shares of restricted stock to certain key employees. The restricted stock awards generally vest ratably over three years ( one - third per year ) after the date of grant. Upon a change in control, as defined in the Plan, the outstanding restricted stock awards will immediately vest. The value of a restricted stock award is based on the market value of the Company’s common stock at the date of grant. A summary of the Company’s restricted stock awards activity for the nine months ended September 30, 2021 is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted Average ​ ​ Number ​ Grant Date ​ ​ of Shares ​ Fair Value ​ ​ ​ ​ ​ ​ Nonvested at January 1, 2021 137,936 ​ $ 7.90 Granted 234,996 ​ 4.97 Vested (31,906) ​ 7.67 Forfeited (33,257) ​ 6.12 Nonvested at September 30, 2021 307,769 ​ $ 5.87 ​ During the nine months ended September 30, 2021, the Company withheld 8,536 shares of common stock representing a portion of the restricted stock awards that vested during the period in order to satisfy certain related employee tax withholding liabilities of $46 associated with vesting. These withheld shares are treated the same as repurchased shares for accounting purposes. ​ The fair value of the award is recorded as compensation expense on a straight-line basis over the vesting period. The Company recorded stock-based compensation expense associated with restricted stock awards of $162 and $1 for the three months ended September 30, 2021 and 2020, respectively, and $357 and $64 for the nine months ended September 30, 2021 and 2020, respectively. At September 30, 2021, there was $1,302 of total unrecognized compensation cost related to the nonvested restricted stock. The unrecognized compensation cost is expected to be recognized over a weighted-average period of 2.19 years. The total fair value of restricted shares that vested during the nine months ended September 30, 2021 was $173.

Income (Loss) Per Share

Income (Loss) Per Share	9 Months Ended
	Sep. 30, 2021
Income (Loss) Per Share
Income (Loss) Per Share	Note 12—Income (Loss) Per Share Basic income (loss) per common share is computed by dividing net income (loss) by the weighted average number of common shares outstanding during the period. Diluted income (loss) per common share further includes any common shares available to be issued upon the exercise of outstanding stock options and restricted stock awards if such inclusions would be dilutive. In periods of a net loss, basic and diluted per share information are the same. The Company determines the potentially dilutive common shares using the treasury stock method. The following table presents the computation of income (loss) per share, basic and diluted: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ ​ September 30, ​ September 30, ​ 2021 2020 2021 2020 Numerator: ​ ​ ​ ​ Net income (loss) ​ $ 9,557 ​ $ (111) ​ $ 15,334 ​ $ (1,274) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Denominator: ​ ​ ​ ​ ​ ​ ​ ​ Weighted average common shares outstanding, basic ​ 50,167,295 ​ 49,843,925 ​ 50,010,341 ​ 49,839,860 Weighted average effect of potentially dilutive common shares: ​ ​ ​ ​ ​ ​ ​ ​ Stock options ​ 55,131 ​ — ​ 48,659 ​ — Restricted stock ​ 40,260 ​ — ​ 20,931 ​ — Weighted average common shares outstanding, diluted ​ 50,262,686 ​ 49,843,925 ​ 50,079,931 ​ 49,839,860 ​ ​ ​ ​ ​ ​ ​ ​ ​ Income (loss) per share, basic and diluted ​ $ 0.19 ​ $ (0.00) ​ $ 0.31 ​ $ (0.03) ​ The weighted average effect of certain stock options and nonvested restricted stock that were excluded from the computation of weighted average diluted shares outstanding, as inclusion of such items would be anti-dilutive, are summarized as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended Nine Months Ended ​ ​ September 30, ​ September 30, ​ 2021 2020 2021 2020 Stock options 67,767 397,820 70,139 353,018 Restricted stock 7,294 133,284 104,558 177,016 Total 75,061 531,104 174,697 530,034 ​

Fair Values of Financial Instru

Fair Values of Financial Instruments	9 Months Ended
	Sep. 30, 2021
Fair Values of Financial Instruments
Fair Values of Financial Instruments	Note 13—Fair Values of Financial Instruments Financial instruments include assets carried at fair value, as well as certain assets and liabilities carried at cost or amortized cost but disclosed at fair value in these condensed consolidated financial statements. Fair value is defined as the exit price, the price that would be received for an asset or paid to transfer a liability in the most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date under current market conditions. The inputs to valuation techniques used to measure fair value are prioritized into a three-level hierarchy. The hierarchy gives the highest priority to quoted prices in active markets for identical assets and liabilities and the lowest priority to unobservable inputs. The fair value hierarchy is as follows: 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 other 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. The following methods and significant assumptions are used to estimate fair value: Investment Securities The fair values for investment securities are determined by quoted market prices, if available (Level 1). For securities where quoted prices are not available, fair values are calculated based on market prices of similar investment securities (Level 2). For investment securities where quoted prices or market prices of similar investment securities are not available, fair values are calculated using discounted cash flows or other market indicators (Level 3). Discounted cash flows are calculated using spread to LIBOR curves that are updated to incorporate loss severities, volatility, credit spread and optionality. During times when trading is more liquid, broker quotes are used (if available) to validate the analysis. Rating agency and industry research reports as well as defaults and deferrals on individual investment securities are reviewed and incorporated into the calculations. Mortgage Loans Held for Sale Mortgage loans held for sale are carried at lower of amortized cost or fair value. Mortgage loans held for sale may be carried at fair value on a nonrecurring basis when fair value is less than cost. The fair value is based on outstanding commitments from investors or quoted prices for loans with similar characteristics (Level 2). Impaired Loans The fair value of collateral-dependent impaired loans with specific allocations of the allowance for loan losses is generally based on recent real estate appraisals. These appraisals may utilize a single valuation approach, such as comparable sales or the income approach, or a combination of both. Adjustments are routinely made in the appraisal process by the appraisers to adjust for differences between the comparable sales and income data available. Such adjustments are usually significant and typically result in a Level 3 classification of the inputs for determining fair value. Appraisals for collateral-dependent impaired loans are performed by certified general appraisers whose qualifications and licenses have been reviewed and verified by management. Once received, an appraisal compliance review is completed in accordance with regulatory guidelines. Mortgage Servicing Rights Fair value of mortgage servicing rights is initially determined at the individual grouping level based on an internal valuation model that calculates the present value of estimated future net servicing income. On a quarterly basis, mortgage servicing rights are evaluated for impairment based upon third party valuations obtained. As disclosed in Note 6—Mortgage Servicing Rights, net, the valuation model utilizes interest rate, prepayment speed, and default rate assumptions that market participants would use in estimating future net servicing income (Level 3). Assets Measured at Fair Value on a Recurring Basis The table below presents the assets measured at fair value on a recurring basis categorized by the level of inputs used in the valuation of each asset at September 30, 2021 and December 31, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements at ​ ​ ​ ​ ​ September 30, 2021 ​ ​ ​ ​ ​ Quoted Prices ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ in Active ​ Significant ​ ​ ​ ​ ​ ​ ​ ​ Markets for ​ Other ​ Significant ​ ​ ​ ​ ​ Identical ​ Observable ​ Unobservable ​ ​ ​ ​ ​ Assets ​ Inputs ​ Inputs ​ Total (Level 1) (Level 2) (Level 3) Financial Assets ​ ​ ​ ​ Available for sale debt securities: ​ ​ ​ ​ U.S. Treasury & Agency securities ​ $ 73,506 ​ $ — ​ $ 73,506 ​ $ — Mortgage-backed securities ​ ​ 26,576 ​ ​ — ​ ​ 26,576 ​ ​ — Collateralized mortgage obligations ​ 99,151 ​ — ​ 99,151 ​ — Collateralized debt obligations ​ 191 ​ — ​ — ​ 191 Equity securities ​ 5,019 ​ 5,019 ​ — ​ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements at ​ ​ ​ ​ ​ December 31, 2020 ​ ​ ​ ​ ​ Quoted Prices ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ in Active ​ Significant ​ ​ ​ ​ ​ ​ ​ ​ Markets for ​ Other ​ Significant ​ ​ ​ ​ ​ Identical ​ Observable ​ Unobservable ​ ​ ​ ​ ​ Assets ​ Inputs ​ Inputs ​ Total (Level 1) (Level 2) (Level 3) Financial Assets ​ ​ ​ ​ Available-for-sale debt securities: ​ ​ ​ ​ U.S. Treasury & Agency securities ​ $ 138,997 ​ $ 40,192 ​ $ 98,805 ​ $ — Mortgage-backed securities ​ ​ 33,814 ​ ​ — ​ ​ 33,814 ​ ​ — Collateralized mortgage obligations ​ 126,596 ​ — ​ 126,596 ​ — Collateralized debt obligations ​ 187 ​ — ​ — ​ 187 Equity securities ​ ​ 5,118 ​ ​ 5,118 ​ ​ — ​ ​ — ​ The table below presents a reconciliation for all assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the nine months ended September 30, 2021 and 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements Using Significant ​ ​ Unobservable Inputs (Level 3) ​ ​ Collateralized Debt Obligations ​ September 30, 2021 September 30, 2020 Balance of recurring Level 3 assets at beginning of period ​ $ 187 ​ $ 199 Total gains or losses (realized/unrealized): ​ ​ ​ Included in income-realized ​ — ​ — Included in other comprehensive income (loss) ​ 7 ​ (13) Principal maturities/settlements ​ ​ (3) ​ ​ (2) Sales ​ — ​ — Transfers in and/or out of Level 3 ​ — ​ — Balance of recurring Level 3 assets at end of period ​ $ 191 ​ $ 184 ​ Unrealized losses on Level 3 investments for collateralized debt obligations was $20 and $27 at September 30, 2021 and December 31, 2020, respectively. In addition to the amounts included in income as presented in the table above, interest income recorded on collateralized debt obligations was $4 and $5 for the nine months ended September 30, 2021 and 2020, respectively. The fair value of the collateralized debt obligations is obtained from third party pricing information. It is determined by calculating discounted cash flows using LIBOR curves plus spreads that adjust for credit risk and illiquidity. The Company also performs an internal analysis that considers the structure and term of the collateralized debt obligations and the financial condition of the underlying issuers to corroborate the information used from the independent third party. Assets Measured at Fair Value on a Non-Recurring Basis From time to time, the Bank may be required to measure certain other assets at fair value on a nonrecurring basis in accordance with U.S. GAAP. These adjustments to fair value usually result from the application of lower of cost or fair value accounting or write-downs of individual assets. For assets measured at fair value on a nonrecurring basis that were recorded in the condensed consolidated balance sheet at September 30, 2021 and December 31, 2020, the following table provides the level of valuation assumptions used to determine each adjustment and the related carrying value: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements at September 30, 2021 ​ ​ ​ Quoted Prices in Significant ​ ​ ​ ​ ​ ​ ​ Active Markets ​ Other ​ Significant ​ ​ ​ ​ ​ for Identical ​ Observable ​ Unobservable ​ ​ ​ ​ Assets ​ Inputs ​ Inputs ​ ​ Fair Value ​ (Level 1) ​ (Level 2) ​ (Level 3) Impaired loans: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential real estate ​ $ 43 ​ $ — ​ $ — ​ $ 43 Mortgage servicing rights ​ ​ 2,021 ​ ​ — ​ ​ — ​ ​ 2,021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements at December 31, 2020 ​ ​ ​ Quoted Prices in Significant ​ ​ ​ ​ ​ ​ ​ Active Markets ​ Other ​ Significant ​ ​ ​ ​ ​ for Identical ​ Observable ​ Unobservable ​ ​ ​ ​ Assets ​ Inputs ​ Inputs ​ ​ Fair Value ​ (Level 1) ​ (Level 2) ​ (Level 3) Impaired loans: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial real estate ​ $ 8,240 ​ $ — ​ $ — ​ $ 8,240 Construction ​ ​ 5,015 ​ ​ — ​ ​ — ​ ​ 5,015 Mortgage loans held for sale ​ ​ 19,375 ​ ​ — ​ ​ 19,375 ​ ​ — Mortgage servicing rights ​ ​ 5,175 ​ ​ — ​ ​ — ​ ​ 5,175 ​ As discussed above, the fair values of collateral-dependent impaired loans carried at fair value are determined by third-party appraisals. Management adjusts these appraised values based on the age of the appraisal and the type of the property. The following tables present quantitative information about Level 3 fair value measurements at September 30, 2021 and December 31, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Quantitative Information about Level 3 Fair Value Measurements at September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Range ​ Fair Value Valuation Technique Unobservable Inputs (Weighted Average) (1) Impaired loans: ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential real estate ​ $ 43 ​ Sales comparison approach ​ Adjustments for differences between the comparable sales ​ N/A Mortgage servicing rights ​ $ 2,021 ​ Discounted cash flow ​ Discount rate ​ 9.5% - 12.0% ​ ​ ​ Prepayment speed ​ 11.1% - 37.7% ​ ​ ​ ​ ​ ​ ​ Default rate ​ 0.1% - 2.6% (1) The range and weighted average for an asset category consisting of a single investment represents the significant unobservable input used in the fair value of the investment. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Quantitative Information about Level 3 Fair Value Measurements at December 31, 2020 ​ ​ ​ ​ ​ Valuation ​ ​ ​ Range ​ Fair Value Technique Unobservable Inputs ​ (Weighted Average) (1) Impaired loans: ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial real estate ​ $ 8,240 ​ Sales comparison approach/Income capitalization approach ​ Adjustments for differences between the comparable sales and income data for similar loans and collateral underlying such loans ​ N/A Construction ​ $ 5,015 ​ Hybrid of sales comparison and income capitalization approaches ​ Adjustments for differences between the comparable sales and income data for similar loans and collateral underlying such loans ​ N/A Mortgage servicing rights ​ $ 5,175 ​ Discounted cash flow ​ Discount rate ​ 9.5% - 12.0% ​ ​ ​ ​ ​ ​ ​ Prepayment speed ​ 10.5% - 37.0% ​ ​ ​ ​ ​ ​ ​ Default rate ​ 0.1% - 0.2% (1) The range and weighted average for an asset category consisting of a single investment represents the significant unobservable input used in the fair value of the investment. ​ Fair Value of Financial Instruments The carrying amounts and estimated fair values of financial instruments not carried at fair value at September 30, 2021 and December 31, 2020, are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements at September 30, 2021 ​ ​ Carrying ​ Fair ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amount Value Level 1 Level 2 Level 3 Financial Assets ​ ​ ​ ​ ​ ​ Cash and due from banks ​ $ 609,412 ​ $ 609,412 ​ $ 609,412 ​ $ — ​ $ — Interest-bearing time deposits with other banks ​ 805 ​ 805 ​ — ​ 805 ​ — Mortgage loans held for sale ​ 12,744 ​ 13,266 ​ — ​ 13,266 ​ — Loans, net (1) ​ 2,168,501 ​ 2,288,221 ​ — ​ — ​ 2,288,221 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Financial Liabilities ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Time deposits ​ 961,691 ​ 964,943 ​ — ​ 964,943 ​ — Federal Home Loan Bank borrowings ​ 307,000 ​ 309,868 ​ — ​ 309,868 ​ — Subordinated notes, net ​ 65,360 ​ 65,066 ​ — ​ 65,066 ​ — (1) Excludes impaired loans measured at fair value on a nonrecurring basis at September 30, 2021. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements at December 31, 2020 ​ ​ Carrying ​ Fair ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amount Value Level 1 Level 2 Level 3 Financial Assets ​ ​ ​ ​ ​ ​ Cash and due from banks ​ $ 998,497 ​ $ 998,497 ​ $ 998,497 ​ $ — ​ $ — Interest-bearing time deposits with other banks ​ 7,021 ​ 7,021 ​ 7,021 ​ — ​ — Mortgage loans held for sale ​ 2,909 ​ 3,052 ​ — ​ 3,052 ​ — Loans, net ​ 2,434,356 ​ 2,521,874 ​ — ​ — ​ 2,521,874 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Financial Liabilities ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Time deposits ​ 1,646,523 ​ 1,658,020 ​ — ​ 1,658,020 ​ — Federal Home Loan Bank borrowings ​ 318,000 ​ 328,150 ​ — ​ 328,150 ​ — Subordinated notes, net ​ 65,341 ​ 65,753 ​ — ​ 65,753 ​ — ​

Regulatory Capital Requirements

Regulatory Capital Requirements	9 Months Ended
	Sep. 30, 2021
Regulatory Capital Requirements
Regulatory Capital Requirements	Note 14—Regulatory Capital Requirements The Bank is subject to the capital adequacy requirements of the OCC. The Company, as a thrift holding company, is subject to the capital adequacy requirements of the Federal Reserve. Capital adequacy guidelines and prompt corrective action regulations involve quantitative measures of assets, liabilities, and certain off-balance sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators about components, risk weightings and other factors, and the regulators, in their discretion, can require the Company to lower classifications in certain cases. Prompt corrective action provisions are not applicable to thrift holding companies. Failure to meet minimum capital requirements can initiate regulatory action that could have a direct material effect on our business, financial condition and results of operations. Prompt corrective action regulations provide five classifications, including well capitalized, adequately capitalized, undercapitalized, significantly undercapitalized and critically undercapitalized, although these terms are not used to represent overall financial condition. At September 30, 2021 and December 31, 2020, the Bank exceeded all capital requirements to be categorized as well capitalized, and the Company exceeded applicable capital adequacy requirements as presented below. The Company’s consolidated and the Bank’s actual and minimum required capital amounts and ratios at September 30, 2021 and December 31, 2020 are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For Capital ​ To be Well ​ ​ ​ Actual ​ Adequacy Purposes ​ Capitalized ​ Amount Ratio Amount Ratio Amount Ratio September 30, 2021 ​ ​ ​ Total adjusted capital to risk-weighted assets ​ ​ ​ Consolidated ​ $ 407,769 ​ 26.40 % $ 123,564 8.00 % N/A N/A ​ Bank ​ 403,753 ​ 26.37 ​ 122,508 8.00 ​ 153,135 10.00 % Tier 1 (core) capital to risk-weighted assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ 335,833 ​ 21.74 ​ 92,673 6.00 ​ N/A N/A ​ Bank ​ 383,980 ​ 25.07 ​ 91,881 6.00 ​ 122,508 8.00 ​ Common Equity Tier 1 (CET1) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ 335,833 ​ 21.74 ​ 69,505 ​ 4.50 ​ N/A N/A ​ Bank ​ 383,980 ​ 25.07 ​ 68,911 4.50 ​ 99,538 6.50 ​ Tier 1 (core) capital to adjusted tangible assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ 335,833 ​ 10.32 ​ 130,158 4.00 ​ N/A N/A ​ Bank ​ 383,980 ​ 11.85 ​ 129,606 4.00 ​ 162,008 5.00 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For Capital ​ To be Well ​ ​ ​ Actual ​ Adequacy Purposes ​ Capitalized ​ Amount Ratio Amount Ratio Amount Ratio December 31, 2020 ​ ​ ​ Total adjusted capital to risk-weighted assets ​ ​ ​ Consolidated ​ $ 407,733 ​ 22.58 % $ 144,466 ​ 8.00 % N/A N/A ​ Bank ​ 386,237 ​ 21.56 ​ 143,339 ​ 8.00 ​ 179,174 10.00 % Tier 1 (core) capital to risk-weighted assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ 319,204 ​ 17.68 ​ 108,350 ​ 6.00 ​ N/A N/A ​ Bank ​ 363,224 ​ 20.27 ​ 107,504 ​ 6.00 ​ 143,339 8.00 ​ Common Equity Tier 1 (CET1) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ 319,204 ​ 17.68 ​ 81,262 ​ 4.50 ​ N/A N/A ​ Bank ​ 363,224 ​ 20.27 ​ 80,628 ​ 4.50 ​ 116,463 6.50 ​ Tier 1 (core) capital to adjusted tangible assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ 319,204 ​ 8.08 ​ 158,067 ​ 4.00 ​ N/A N/A ​ Bank ​ 363,224 ​ 9.20 ​ 157,954 ​ 4.00 ​ 197,442 5.00 ​ ​ Under the Basel III capital rules, both the Company and the Bank must hold a capital conservation buffer (“CCB”) consisting of at least 2.5% above the minimum risk-based capital ratios, or 7.0% for common equity Tier 1 (“CET1”) capital ratio, 8.5% for Tier 1 capital ratio and 10.5% for total capital ratio, in order to avoid limitations on capital distributions and discretionary bonus payments to executive officers and similar employees. At September 30, 2021 and December 30, 2020, the Company and the Bank’s CET1, Tier 1 and total capital ratios exceed all minimum requirements as well as the levels necessary to be deemed well capitalized and exceed the applicable CCB. Dividend Restrictions As noted above, banking regulations require the Bank to maintain certain capital levels and may limit the dividends paid by the bank to the holding company or by the holding company to its shareholders. The Company’s principal source of funds for dividend payments is dividends received from the Bank, and banking regulations limit the dividends that may be paid. Approval by regulatory authorities is required if (i) the total capital distributions for the applicable calendar year exceed the sum of the Bank’s net income for that year to date plus the Bank’s retained net income for the preceding two years or (ii) the Bank would not be at least adequately capitalized following the distribution. The Qualified Thrift Lender (“QTL”) test requires that a minimum of 65% of assets be maintained in qualified thrift investments, including mortgage loans, housing- and real estate-related finance and other specified areas. If the QTL test is not met, limits are placed on growth, branching, new investments, FHLB advances and dividends, or the Bank must convert to a commercial bank charter. Management believes that the QTL test has been met. Also, pursuant to the terms of the subordinated note agreements, the Company may pay dividends if it is well capitalized as defined by regulatory guidelines. The Bank is currently required to obtain the prior approval of the OCC in order to pay dividends to the Company due to the existence of a formal agreement with the OCC. Refer to Note 16—Commitments and Contingencies. In addition, the Company currently is required to obtain the prior approval of the FRB in order to pay dividends to the Company’s shareholders.

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2021
Related Party Transactions
Related Party Transactions	Note 15—Related Party Transactions From time to time, the Company had made charitable contributions to a foundation for which certain members of the boards of directors of the Company and Bank, and who are also related to the Company’s controlling shareholders, serve as trustees. The Company paid $375 to the foundation during the nine months ended September 30, 2020. The Company ceased making charitable contributions to the foundation beginning in the second quarter of 2020. In May 2021, the Company issued and sold unregistered shares of common stock to its Chief Executive Officer in exchange for cash consideration. Refer to Note 10—Shareholders’ Equity. The Bank had provided monthly data processing and programming services to entities controlled by the Company’s controlling shareholders. Aggregate fees received for such services amounted to $10 and $60 during the three and nine months ended September 30, 2020, respectively. The Bank terminated such data processing agreement, effective as of November 2020. The Company historically had leased certain storage and office space from entities owned by the Company’s controlling shareholders. Amounts paid under such leases totaled $57 and $177 during the three and nine months ended September 30, 2020, respectively. The Company terminated such leases as of December 31, 2020. The Company subleases certain office space to entities owned by the Company’s controlling shareholders. Amounts received under such subleases totaled $97 and $69 during the three months ended September 30, 2021 and 2020, respectively, and $289 and $207 during the nine months ended September 30, 2021 and 2020, respectively.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies
Commitments and Contingencies	Note 16—Commitments and Contingencies Financial Instruments with Off-Balance Sheet Risk The Bank is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financial needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit, which are not reflected in the condensed consolidated financial statements. Unfunded Commitments to Extend Credit A commitment to extend credit, such as a loan commitment, credit line and overdraft protection, is a legally binding agreement to lend funds to a customer, usually at a stated interest rate and for a specific purpose. Such commitments have fixed expiration dates and generally require a fee. The extension of a commitment gives rise to credit risk. The actual liquidity requirements or credit risk that the Bank will experience is expected to be lower than the contractual amount of commitments to extend credit because a significant portion of those commitments are expected to expire without being drawn upon. Certain commitments are subject to loan agreements containing covenants regarding the financial performance of the customer that must be met before the Bank is required to fund the commitment. The Bank uses the same credit policies in making commitments to extend credit as it does in making loans. The commitments outstanding to make loans include primarily residential real estate loans that are made for a period of 90 days or less. At September 30, 2021, outstanding commitments to make loans consisted of fixed rate loans of $4,958 with interest rates ranging from 2.75% to 3.625% and maturities ranging from 15 years to 30 years and variable rate loans of $29,794 with varying interest rates ranging from 2.875% to 3.875% at September 30, 2021 and maturities of 30 years. Unused Lines of Credit The Bank also issues unused lines of credit to meet customer financing needs. At September 30, 2021, the unused lines of credit include residential second mortgages of $12,294 and construction loans of $45,749, totaling $58,043. These unused lines of credit are associated with variable rate commitments with interest rates ranging from 3.25% to 7.00% and maturities ranging from 1 month to 24 years . Standby Letters of Credit Standby letters of credit are issued on behalf of customers in connection with construction contracts between the customers and third parties. Under standby letters of credit, the Bank assures that the third parties will receive specified funds if customers fail to meet their contractual obligations. The credit risk to the Bank arises from its obligation to make payment in the event of a customer’s contractual default. The maximum amount of potential future payments guaranteed by the Bank is limited to the contractual amount of these letters. Collateral may be obtained at exercise of the commitment. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loans to customers. The following is a summary of the total amount of unfunded commitments to extend credit and standby letters of credit outstanding at September 30, 2021 and December 31, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ 2021 2020 Commitments to make loans ​ $ 34,752 ​ $ 40,331 Unused lines of credit ​ 58,043 ​ 140,665 Standby letters of credit ​ 24 ​ 24 ​ Legal Proceedings The Company and its subsidiaries may be subject to legal actions and claims arising from contracts or other matters from time to time in the ordinary course of business. Management is not aware of any pending or threatened legal proceedings, except as described below, that are considered other than routine legal proceedings. The Company believes that the ultimate disposition or resolution of its routine legal proceedings, in the aggregate, are immaterial to its financial position, results of operations or liquidity. The Bank is currently under formal investigation by the OCC generally relating to its former residential loan product marketed as the Advantage Loan Program and related matters (the “OCC Investigation”) and continues to be subject to a publicly available formal agreement with the OCC, dated June 18, 2019 (the “OCC Agreement”), relating primarily to certain aspects of its Bank Secrecy Act/Anti-Money Laundering (“BSA/AML”) compliance program as well as the Bank’s credit administration. The OCC Agreement generally requires that the Bank enhance its policies and procedures to ensure compliance with BSA/AML laws and regulations and ensure effective controls over residential loan underwriting. Specifically, the OCC Agreement requires the Bank to: (i) establish a compliance committee to monitor and oversee the Bank’s compliance with the provisions of OCC Agreement; (ii) develop a revised customer due diligence and enhanced due diligence program; (iii) develop a revised suspicious activity monitoring program; (iv) engage an independent, third-party consultant to review and provide a written report on the Bank’s suspicious activity monitoring; (v) develop revised policies and procedures to ensure effective BSA/AML model risk management for the Bank’s automated suspicious activity monitoring system, which must be validated by a qualified, independent third party; (vi) ensure that the Bank’s BSA Department maintains sufficient personnel; and (vii) develop revised policies and procedures to ensure effective controls over loan underwriting. In addition to these requirements, while the OCC Agreement remains in effect, the Bank is subject to certain restrictions on expansion activities, such as growth through acquisition or branching to supplement organic growth of the Bank. Further, any failure to comply with the requirements of the OCC Agreement could result in further enforcement actions, the imposition of material restrictions on the activities of the Bank, or the assessment of fines or penalties. The Bank established a Compliance Committee to monitor and assure compliance with the OCC Agreement, oversee the completion of an independent review of account and transaction activity to be conducted by a third-party vendor and engage a third party to conduct a model validation for its BSA/AML monitoring software. The Bank is fully cooperating with the OCC Investigation and implementing the items necessary to achieve compliance with the obligations in the OCC Agreement. A finding by the OCC that the Bank failed to comply with the OCC Agreement or adverse findings in the OCC Investigation could result in additional regulatory scrutiny, constraints on the Bank’s business, or other formal enforcement action. Any of those events could have a material adverse effect on our future operations, financial condition, growth, or other aspects of our business. The Bank has incurred and expects to continue to incur significant costs in its efforts to comply with the OCC Agreement and respond to the OCC Investigation, which are reflected in the Company’s results of operations for the three and nine months ended September 30, 2021 and 2020. The Bank also has received grand jury subpoenas from the U.S. Department of Justice (the “DOJ”) beginning in 2020 requesting the production of documents and information in connection with an investigation that appears to be focused on the Bank’s Advantage Loan Program and related issues, including residential lending practices and public disclosures about that program. During 2021, the DOJ charged by criminal information the former managing director of residential lending of the Bank and two other former loan officers with conspiracy to commit bank and wire fraud in connection with the Advantage Loan Program, and each individual has pled guilty to that charge. The criminal information and plea agreement with respect to the former managing director of residential lending asserts that the individual acted with the knowledge and encouragement of certain former members of senior management. The Bank is fully cooperating with this ongoing investigation. Adverse findings in the DOJ investigation could result in material losses due to damages, penalties, costs, and/or expenses imposed on the Company, which could have a material adverse effect on our future operations, financial condition, growth, or other aspects of our business. The Bank has and expects to continue to incur significant costs in its efforts to comply with the DOJ investigation in 2021. The Company is currently under a formal investigation by the SEC. This investigation appears to be focused on accounting, financial reporting and disclosure matters, as well as the Company’s internal controls, related to the Advantage Loan Program. The Company has received document and information requests from the SEC and is fully cooperating with this investigation. Adverse findings in the SEC investigation could result in material losses due to penalties, disgorgement, costs and/or expenses imposed on the Company, which could have a material adverse effect on the Company’s future operations, financial condition, growth or other aspects of its business. The Company expects to incur significant costs in its efforts to comply with the SEC investigation in 2021. In addition, the Company, certain of its current and former officers and directors and other parties were named as defendants in a shareholder class action captioned Oklahoma Police Pension and Retirement System v. Sterling Bancorp, Inc., et al., Case No. 5:20-cv-10490-JEL-EAS, filed on February 26, 2020 in the U.S. District Court for the Eastern District of Michigan. On April 19, 2021, the plaintiff, the Company and each of the other defendants entered into the final settlement agreement and submitted it to the court, which granted final approval on September 23, 2021. The final agreement provides for a single $12,500 cash payment in exchange for the release of all of the defendants from all alleged claims. The full amount of the settlement was funded by the Company’s insurance carriers under applicable insurance policies and placed into an escrow account for the benefit of the class and, commencing after the expiration of a 30-day appeal period following court approval, is available to be claimed from the escrow account by members of the class without any further financial or other obligation of the Company. The Company maintained a liability of $27,500 for contingent losses at September 30, 2021 and December 31, 2020, which included the $12,500 accrual related to the final settlement discussed above. The outcome of the pending investigations and threatened litigation is uncertain. There can be no assurance (i) that the Company will not incur material losses due to damages, penalties, costs and/or expenses as a result of such investigations and threatened litigation, (ii) that the accrual for contingent losses will be sufficient to cover such losses, or (iii) that such losses will not materially exceed such accrual and have a material impact on the Company’s business, financial condition or results of operations. In addition, on July 28, 2020, the Company received a demand letter from two law firms representing a purported shareholder of the Company alleging facts and claims substantially the same as many of the alleged facts and claims in the class action lawsuit (the “Shareholder Demand”). The Shareholder Demand requests that the board of directors take action to (1) recover damages the Company has purportedly sustained as a result of alleged breaches of fiduciary duties by certain of its officers and directors; (2) recover for the benefit of the Company the amounts by which certain of its officers and directors purportedly were unjustly enriched; and (3) correct alleged deficiencies in the Company’s internal controls. The Shareholder Demand states that, if the board of directors has not taken the actions demanded within 90 days after the receipt of the letter, or in the event the board of directors refuses to take the actions demanded, the purported shareholder would commence a shareholder derivative action on behalf of the Company seeking appropriate relief. The board of directors established a demand review committee to evaluate the matters raised in the Shareholder Demand and to determine the actions, if any, that should be taken by the Company with respect to those matters. The Company responded to the Shareholder Demand advising the purported shareholder of the appointment of the demand review committee. The demand review committee’s investigation is ongoing. Further, legal action has not yet been brought by the purported shareholder. Nevertheless, expenses related to the evaluation by the demand review committee have been significant. There can be no assurance as to whether any litigation will be commenced by or against the Company with respect to the Shareholder Demand or that, if any such litigation is commenced, the Company will not incur material losses due to damages, penalties, costs and/or expenses as a result of such litigation or that any such losses will not have a material impact on the Company’s financial condition or results of operations. Refer to Note 17—Subsequent Events for further information. Mortgage Repurchase Liability During the period 2015 through 2019, the Company sold portfolio loans originated under the Advantage Loan Program to private investors in the secondary market. The Company also sells conventional residential real estate loans (which excludes Advantage Loan Program loans) in the secondary market primarily to Fannie Mae on an ongoing basis. In connection with these loans sold, the Company makes customary representations and warranties about various characteristics of each loan. The Company may be required pursuant to the terms of the applicable mortgage loan purchase and sale agreements to repurchase any previously sold loan or indemnify (make whole) the investor for which the representation or warranty of the Company proves to be inaccurate, incomplete or misleading. In the event of a repurchase, the Company is typically required to pay the unpaid principal balance, the proportionate premium received when selling the loans and certain expenses. As of September 30, 2021 and December 31, 2020, the Bank maintained a mortgage repurchase liability in connection with the above mentioned investigations stemming from the Advantage Loan Program totaling $3,225 and $9,699, respectively, which is included in accrued expenses and other liabilities in the condensed consolidated balance sheets. The unpaid principal balance of residential real estate loans sold that were subject to potential repurchase obligations for breach of representations and warranties totaled $261,607 and $562,139 at September 30, 2021 and December 31, 2020, respectively, including Advantage Loan Program loans totaling $159,935 and $429,816 at September 30, 2021 and December 31, 2020, respectively. The mortgage repurchase liability reflects management’s estimate of losses based on a combination of factors. The Company’s estimation process requires management to make subjective and complex judgements about matters that are inherently uncertain, such as future repurchase demand expectations, economic factors and findings from the Internal Review. The actual repurchase losses could vary significantly from the recorded mortgage repurchase liability, depending on the outcome of various factors, including those previously discussed. To avoid the uncertainty of audits and inquiries by third-party investors in the Advantage Loan Program, beginning at the end of the second quarter of 2020, the Company commenced making offers to each of those investors to repurchase 100% of the previously sold Advantage Loan Program loans. ​ In March 2021, the Company repurchased a pool of Advantage Loan Program loans with an outstanding principal balance of $87,944 from a third-party investor. These loans were previously sold to such third-party investor with servicing retained and were considered to be performing at the repurchase date. In connection with this repurchase during the first quarter of 2021, the Company recognized a disposition of mortgage servicing rights of $1,255 and charged a loss of $2,917 against the mortgage repurchase liability. In June 2021, the Company repurchased a pool of Advantage Loan Program loans with an outstanding principal balance of $79,818 from another third-party investor. These loans were previously sold to such third-party investor with servicing retained and were considered to be performing at the repurchase date. In connection with this repurchase during the second quarter of 2021, the Company recognized a disposition of mortgage servicing rights of $1,054 and charged a loss of $1,825 against the mortgage repurchase liability. In July 2021, the Company repurchased pools of Advantage Loan Program loans with an aggregate outstanding principal balance of $6,067 from third-party investors. These loans were previously sold to such third-party investors with servicing retained and were considered to be performing at the repurchase date. In connection with this repurchase during the third quarter of 2021, the Company recognized a disposition of mortgage servicing rights of $72 and charged a loss of $769 against the mortgage repurchase liability. Activity in the mortgage repurchase liability was as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Nine Months Ended ​ ​ September 30, ​ 2021 2020 Balance, beginning of period ​ $ 9,699 ​ $ 7,823 Net provision (recovery) ​ (963) ​ 25 Loss on loan repurchases ​ (5,511) ​ (651) Balance, end of the period ​ $ 3,225 ​ $ 7,197 ​ Pursuant to agreements with certain investors, the Company agreed to repurchase additional pools of Advantage Loan Program loans within the time ranges specified in the following table, with the specific date of repurchase within each range to be determined by the applicable investor. Such loans are reflected in the mortgage repurchase liability. ​ ​ ​ ​ ​ ​ ​ Outstanding ​ ​ Principal Balance at Repurchase Date Range September 30, 2021 February 28, 2022 – February 28, 2023 ​ $ 15,609 May 21, 2022 – May 21, 2023 ​ 15,565 July 25, 2022 – July 25, 2023 ​ 19,276 Present – July 22, 2023 ​ 33,227 ​ ​ $ 83,677 ​

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2021
Subsequent Events
Subsequent Events	Note 17—Subsequent Events On October 19, 2021, the Company and the purported shareholder of the Company who made the Shareholder Demand entered into a term sheet setting forth the principal terms of a proposed resolution of claims and associated shareholder derivative litigation described in the Shareholder Demand. The principal terms include the board of directors of the Company adopting and maintaining certain corporate governance reforms, some of which the Company has implemented, reimbursement by the Company of attorneys’ fees and expenses incurred by the purported shareholder and customary releases of specified individuals. The term sheet remains subject to the material conditions set forth therein, including the negotiation of a definitive settlement agreement, confirmatory discovery to be performed by counsel for the purported shareholder and court approval of the final settlement agreement. Any definitive settlement agreement would also contain other customary terms and conditions for settlements of shareholder derivative actions or demands. The Company expects that the payment of the attorneys’ fees and expenses incurred by the purported shareholder would be covered by the Company’s insurance carriers under applicable insurance policies.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2021
Summary of Significant Accounting Policies
Principles of Consolidation	Principles of Consolidation The accompanying condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”). The condensed consolidated financial statements include the results of the Company and its wholly-owned subsidiary. On December 21, 2020, QCM, LLC, doing business as Quantum Capital Management, a wholly-owned subsidiary of Quantum Fund, LLC and an indirect wholly-owned subsidiary of the Bank, completed the sale of substantially all of its assets, which consisted primarily of client advisory agreements for aggregate consideration of $250 . The operations of Quantum Capital Management were not significant. All significant intercompany accounts and transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates The preparation of the condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Due to the inherent uncertainty involved in making estimates, actual results reported in the future periods may be based upon amounts that could differ from those estimates.
Concentration of Credit Risk	Concentration of Credit Risk The loan portfolio consists primarily of residential real estate loans, which are collateralized by real estate. At September 30, 2021 and December 31, 2020, residential real estate loans accounted for 81% of the loan portfolio. In addition, most of these residential loans and other commercial loans have been made to individuals and businesses in the state of California, which are dependent on the area economy for their livelihoods and servicing of their loan obligation. At September 30, 2021 and December 31, 2020, approximately 85% and 87%, respectively, of the loan portfolio was originated with respect to properties or businesses located in California. Starting December 9, 2019, the Bank suspended its Advantage Loan Program and announced on March 6, 2020 that it permanently discontinued this program. Loans originated under this Program comprised a significant component of the Bank’s total loan originations. Advantage Loan Program loans (including residential real estate loans held for sale of $11,993, of which $8,744 were on nonaccrual status, and $19,375 at December 31, 2020, all of which were on nonaccrual status) totaled $1,299,438 and $1,515,248, or 71% and 74% , of the residential loan portfolio at September 30, 2021 and December 31, 2020, respectively. Refer to Note 16 –
Risks and Uncertainties - COVID-19	Risks and Uncertainties – COVID-19 The coronavirus disease 2019 (“COVID-19”) pandemic, and related efforts to contain it, have caused significant disruptions in the functioning of the financial markets, resulted in an unprecedented slowdown in economic activity and a related increase in unemployment, and have increased economic and market uncertainty and volatility. The Company’s primary market areas of California and New York City have been hit particularly hard by the COVID-19 pandemic. Federal and state governments have taken unprecedented actions to contain the spread of the disease, including vaccine distribution, closures of businesses and schools, fiscal stimulus, and legislation designed to deliver monetary aid and other relief for businesses and individuals impacted by the pandemic. The COVID-19 pandemic continues to create and exacerbate significant risks and uncertainties for the markets that the Bank serves. As the Bank’s residential and commercial customers are facing various levels of financial stress, the Bank continues to experience an elevated level of delinquent and nonaccrual loans, primarily in residential real estate, office, lodging, retail and construction loans. The duration and severity of the effect of the COVID-19 pandemic on economic, market and business conditions remain uncertain. The Company continues to be subject to heightened business, operational, market, credit and other risks related to the COVID-19 pandemic, which may have an adverse effect on its business, financial condition, liquidity, results of operations, risk-weighted assets and regulatory capital. Employee Retention Credits Under the CARES Act On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”) was signed into law providing numerous tax provisions and other stimulus measures, including an employee retention credit (“ERC”), which is a refundable tax credit against certain employment taxes. The Taxpayer Certainty and Disaster Tax Relief Act of 2020 and the American Rescue Plan Act of 2021 extended and expanded the availability of the ERC. The ERC is equal to 70% of qualified wages paid to employees (including employer qualified health plan expenses) and is capped at $10,000 of qualified wages for each employee, such that the maximum ERC that can be claimed is $7,000 per employee per applicable quarter in 2021. As a result of the Company averaging 500 or fewer full-time employees in 2019, all wages paid to employees were eligible for the ERC (rather than just wages paid to employees not providing services). The Company evaluated its eligibility for the ERC in the third quarter of 2021. The Company determined it qualified for the ERC for the first three quarters of 2021 because the Company’s gross receipts (which consisted of total interest income and other fees and income from banking activities and services) decreased more than 20% in 2021 from each of the respective quarters of 2019, the relevant criteria for the ERC. The Company is in the process of amending certain payroll tax filings to apply for a refund for each of the first three quarters of 2021. The Company cannot reasonably estimate when it will receive the refunds once the filings have been made. Since there is not any U.S. GAAP guidance for for-profit business entities that receive government assistance that is not in the form of a loan, an income tax credit or revenue from a contract with a customer, the Company accounted for the employee retention credit by analogy to International Accounting Standards 20 (“IAS 20”). Under IAS 20, a business entity would recognize the credit on a systematic basis over the periods in which it recognizes the payroll expenses for which the grant (tax credit) is intended to compensate when there is reasonable assurance that the entity will comply with any conditions attached to grant and the grant will be received. The Company has made an accounting policy election to record the ERC benefit as a reduction to payroll expenses. During the three and nine months ended September 30, 2021, the Company recorded a benefit of $6,529 resulting in a net reduction of salaries and employee benefits expense in the condensed consolidated statements of operations. The Company has recorded a grant receivable of
Reclassification	Reclassification Certain prior period amounts have been reclassified to conform with the current period presentation. The Company has reclassified custodial escrow balances maintained with serviced loans of $6,051 from accrued

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2021
Investment Securities
Schedule of amortized cost and fair value of debt securities available for sale	The following tables summarize the amortized cost and fair value of debt securities available for sale at September 30, 2021 and December 31, 2020 and the corresponding amounts of gross unrealized gains and losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2021 ​ ​ Amortized ​ Gross Unrealized ​ Fair ​ Cost Gain Loss Value Available for sale: ​ ​ ​ ​ U.S. Treasury & Agency securities ​ $ 73,427 ​ $ 79 ​ $ — ​ $ 73,506 Mortgage-backed securities ​ ​ 26,833 ​ ​ 57 ​ ​ (314) ​ ​ 26,576 Collateralized mortgage obligations ​ 98,636 ​ 558 ​ (43) ​ 99,151 Collateralized debt obligations ​ 211 ​ — ​ (20) ​ 191 Total ​ $ 199,107 ​ $ 694 ​ $ (377) ​ $ 199,424 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ ​ Amortized ​ Gross Unrealized ​ Fair ​ Cost Gain Loss Value Available for sale: ​ ​ ​ ​ U.S. Treasury & Agency securities ​ $ 138,742 ​ $ 255 ​ $ — ​ $ 138,997 Mortgage-backed securities ​ ​ 33,743 ​ ​ 72 ​ ​ (1) ​ ​ 33,814 Collateralized mortgage obligations ​ 126,359 ​ 628 ​ (391) ​ 126,596 Collateralized debt obligations ​ 214 ​ — ​ (27) ​ 187 Total ​ $ 299,058 ​ $ 955 ​ $ (419) ​ $ 299,594
Schedule of amortized cost and fair value of debt securities available for sale, shown by contractual maturity	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amortized ​ Fair ​ Cost Value U.S. Treasury & Agency securities ​ ​ Due less than one year ​ $ 50,427 ​ $ 50,458 Due after one year through five years ​ ​ 23,000 ​ ​ 23,048 Mortgage-backed securities ​ ​ 26,833 ​ ​ 26,576 Collateralized mortgage obligations ​ 98,636 ​ 99,151 Collateralized debt obligations ​ 211 ​ 191 Total ​ $ 199,107 ​ $ 199,424
Schedule of debt securities available for sale, at fair value, continuous unrealized losses position	The following table summarizes debt securities available for sale, at fair value, with unrealized losses at September 30, 2021 and December 31, 2020 aggregated by major security type and length of time the individual securities have been in a continuous unrealized loss position: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2021 ​ ​ Less than 12 Months ​ 12 Months or More ​ Total ​ ​ Fair ​ Unrealized ​ Fair ​ Unrealized ​ Fair ​ Unrealized ​ Value Losses Value Losses Value Losses Mortgage-backed securities ​ $ 8,818 ​ $ (314) ​ $ — ​ $ — ​ $ 8,818 ​ $ (314) Collateralized mortgage obligations ​ ​ 47,728 ​ ​ (43) ​ ​ — ​ ​ — ​ ​ 47,728 ​ ​ (43) Collateralized debt obligations ​ — ​ ​ — ​ ​ 191 ​ ​ (20) ​ ​ 191 ​ ​ (20) Total ​ $ 56,546 ​ $ (357) ​ $ 191 ​ $ (20) ​ $ 56,737 ​ $ (377) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ ​ Less than 12 Months ​ 12 Months or More ​ Total ​ ​ Fair ​ Unrealized ​ Fair ​ Unrealized ​ Fair ​ Unrealized ​ Value Losses Value Losses Value Losses Mortgage-backed securities ​ $ 5,694 ​ $ (1) ​ $ — ​ $ — ​ $ 5,694 ​ $ (1) Collateralized mortgage obligations ​ ​ 75,740 ​ ​ (391) ​ ​ — ​ ​ — ​ ​ 75,740 ​ ​ (391) Collateralized debt obligations ​ — ​ — ​ 187 ​ (27) ​ 187 ​ (27) Total ​ $ 81,434 ​ $ (392) ​ $ 187 ​ $ (27) ​ $ 81,621 ​ $ (419)
Schedule of equity securities with readily determinable fair values	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ ​ September 30, ​ September 30, ​ 2021 2020 2021 2020 Net gains (losses) recorded during the period on equity securities ​ $ (24) ​ $ — ​ $ (99) ​ $ 123 Less: net gains (losses) recorded during the period on equity securities sold during the period ​ — ​ ​ — ​ — ​ ​ — Unrealized gains (losses) recorded during the period on equity securities held at the reporting date ​ $ (24) ​ $ — ​ $ (99) ​ $ 123

Loans (Tables)

Loans (Tables)	9 Months Ended
	Sep. 30, 2021
Loans
Schedule of major categories of loans	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ 2021 2020 Residential real estate ​ $ 1,818,633 ​ $ 2,033,526 Commercial real estate ​ 291,649 ​ 259,958 Construction ​ 126,571 ​ 206,581 Commercial lines of credit ​ 1,923 ​ 6,671 Other consumer ​ 6 ​ 7 Total loans ​ 2,238,782 ​ 2,506,743 Less: allowance for loan losses ​ (70,238) ​ (72,387) Loans, net ​ $ 2,168,544 ​ $ 2,434,356 ​
Schedule of activity in allowance for loan losses and recorded investment by portfolio segment	The following tables present the activity in the allowance for loan losses by portfolio segment for the three and nine months ended September 30, 2021 and 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential Commercial ​ Lines of Other ​ ​ ​ ​ Three Months Ended September 30, 2021 ​ Real Estate ​ Real Estate ​ Construction ​ Credit ​ Consumer ​ Unallocated ​ Total Allowance for loan losses: ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 33,064 ​ $ 22,491 ​ $ 15,056 ​ $ 58 ​ $ — ​ $ — ​ $ 70,669 Provision (recovery) for loan losses ​ 109 ​ 1,486 ​ (1,194) ​ (4) ​ — ​ — ​ 397 Charge offs ​ — ​ — ​ (1,965) ​ — ​ — ​ — ​ (1,965) Recoveries ​ 530 ​ 605 ​ 2 ​ — ​ — ​ — ​ 1,137 Total ending balance ​ $ 33,703 ​ $ 24,582 ​ $ 11,899 ​ $ 54 ​ $ — ​ $ — ​ $ 70,238 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential ​ Commercial ​ ​ ​ Lines of ​ Other ​ ​ ​ ​ ​ ​ Nine Months Ended September 30, 2021 Real Estate Real Estate Construction Credit Consumer Unallocated Total Allowance for loan losses: ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 32,366 ​ $ 21,942 ​ $ 17,988 ​ $ 91 ​ $ — ​ $ — ​ $ 72,387 Provision (recovery) for loan losses ​ 16 ​ 2,004 ​ (4,129) ​ (37) ​ — ​ — ​ (2,146) Charge offs ​ — ​ — ​ (1,965) ​ — ​ — ​ — ​ (1,965) Recoveries ​ 1,321 ​ 636 ​ 5 ​ — ​ — ​ — ​ 1,962 Total ending balance ​ $ 33,703 ​ $ 24,582 ​ $ 11,899 ​ $ 54 ​ $ — ​ $ — ​ $ 70,238 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential ​ Commercial ​ ​ ​ ​ Lines of ​ Other ​ ​ ​ ​ ​ ​ Three Months Ended September 30, 2020 Real Estate Real Estate Construction Credit Consumer Unallocated Total Allowance for loan losses: ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 18,812 ​ $ 15,770 ​ $ 11,998 ​ $ 350 ​ $ 1 ​ $ — ​ $ 46,931 Provision (recovery) for loan losses ​ (467) ​ 1,771 ​ 628 ​ 192 ​ (1) ​ — ​ 2,123 Charge offs ​ (108) ​ — ​ (707) ​ — ​ — ​ — ​ (815) Recoveries ​ 3 ​ 14 ​ 2 ​ — ​ — ​ — ​ 19 Total ending balance ​ $ 18,240 ​ $ 17,555 ​ $ 11,921 ​ $ 542 ​ $ — ​ $ — ​ $ 48,258 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential ​ Commercial ​ ​ ​ ​ Lines of ​ Other ​ ​ ​ ​ ​ ​ Nine Months Ended September 30, 2020 Real Estate Real Estate Construction Credit Consumer Unallocated Total Allowance for loan losses: ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 12,336 ​ $ 5,243 ​ $ 3,822 ​ $ 328 ​ $ 1 ​ $ — ​ $ 21,730 Provision (recovery) for loan losses ​ 5,997 ​ 12,262 ​ 8,801 ​ 214 ​ (1) ​ — ​ 27,273 Charge offs ​ (108) ​ — ​ (707) ​ — ​ — ​ — ​ (815) Recoveries ​ 15 ​ 50 ​ 5 ​ — ​ — ​ — ​ 70 Total ending balance ​ $ 18,240 ​ $ 17,555 ​ $ 11,921 ​ $ 542 ​ $ — ​ $ — ​ $ 48,258 ​ The following tables present the balance in the allowance for loan losses and the recorded investment by portfolio segment and based on impairment evaluation method as of September 30, 2021 and December 31, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential ​ Commercial ​ ​ ​ Lines of ​ Other ​ ​ ​ ​ ​ ​ September 30, 2021 Real Estate Real Estate Construction Credit Consumer Unallocated Total Allowance for loan losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Ending allowance balance attributable to loans: ​ ​ ​ ​ ​ ​ ​ ​ Individually evaluated for impairment ​ $ 160 ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ 160 Collectively evaluated for impairment ​ ​ 33,543 ​ ​ 24,582 ​ ​ 11,899 ​ ​ 54 ​ ​ — ​ ​ — ​ ​ 70,078 Total ending allowance balance ​ $ 33,703 ​ $ 24,582 ​ $ 11,899 ​ $ 54 ​ $ — ​ $ — ​ $ 70,238 Loans: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Loans individually evaluated for impairment ​ $ 364 ​ $ 13,634 ​ $ 28,071 ​ $ 118 ​ $ — ​ $ — ​ $ 42,187 Loans collectively evaluated for impairment ​ 1,818,269 ​ 278,015 ​ 98,500 ​ 1,805 ​ 6 ​ — ​ 2,196,595 Total ending loans balance ​ $ 1,818,633 ​ $ 291,649 ​ $ 126,571 ​ $ 1,923 ​ $ 6 ​ $ — ​ $ 2,238,782 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential ​ Commercial ​ ​ ​ Lines of ​ Other ​ ​ ​ ​ ​ ​ December 31, 2020 Real Estate Real Estate Construction Credit Consumer Unallocated Total Allowance for loan losses: ​ ​ ​ ​ ​ ​ ​ Ending allowance balance attributable to loans: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Individually evaluated for impairment ​ $ 41 ​ $ 287 ​ $ 1,905 ​ $ 4 ​ $ — ​ $ — ​ $ 2,237 Collectively evaluated for impairment ​ ​ 32,325 ​ ​ 21,655 ​ ​ 16,083 ​ ​ 87 ​ ​ — ​ ​ — ​ ​ 70,150 Total ending allowance balance ​ $ 32,366 ​ $ 21,942 ​ $ 17,988 ​ $ 91 ​ $ — ​ $ — ​ $ 72,387 Loans: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Loans individually evaluated for impairment ​ $ 208 ​ $ 20,974 ​ $ 48,871 ​ $ 3,981 ​ $ — ​ $ — ​ $ 74,034 Loans collectively evaluated for impairment ​ 2,033,318 ​ 238,984 ​ 157,710 ​ 2,690 ​ 7 ​ — ​ 2,432,709 Total ending loans balance ​ $ 2,033,526 ​ $ 259,958 ​ $ 206,581 ​ $ 6,671 ​ $ 7 ​ $ — ​ $ 2,506,743
Schedule of information related to impaired loans by class of loans	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ At September 30, 2021 ​ At December 31, 2020 ​ ​ Unpaid ​ ​ ​ ​ Allowance ​ Unpaid ​ ​ ​ ​ Allowance ​ ​ Principal ​ Recorded ​ for Loan ​ Principal ​ Recorded ​ for Loan ​ Balance Investment Losses Balance Investment Losses With no related allowance for loan losses recorded: ​ ​ ​ ​ ​ ​ ​ Residential real estate, first mortgage ​ $ 106 ​ $ 82 ​ $ — ​ $ 116 ​ $ 94 ​ $ — Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ — Retail ​ ​ 5 ​ ​ 5 ​ ​ — ​ ​ 1,247 ​ ​ 1,029 ​ ​ — Hotels/Single-room occupancy hotels ​ ​ 10,800 ​ ​ 10,861 ​ ​ — ​ ​ 11,428 ​ ​ 11,419 ​ ​ — Office ​ ​ 2,768 ​ ​ 2,768 ​ ​ — ​ ​ — ​ ​ — ​ ​ — Construction ​ ​ 28,140 ​ ​ 28,071 ​ ​ — ​ ​ 42,669 ​ ​ 41,951 ​ ​ — Commercial lines of credit, private banking ​ ​ 118 ​ ​ 118 ​ ​ — ​ ​ 3,857 ​ ​ 3,857 ​ ​ — Subtotal ​ 41,937 ​ 41,905 ​ — ​ 59,317 ​ 58,350 ​ — With an allowance for loan losses recorded: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential real estate, first mortgage ​ 274 ​ 282 ​ 160 ​ 114 ​ 114 ​ 41 Commercial real estate, hotels/single-room occupancy hotels ​ ​ — ​ ​ — ​ ​ — ​ ​ 8,645 ​ ​ 8,526 ​ ​ 287 Construction ​ — ​ — ​ — ​ 6,920 ​ 6,920 ​ 1,905 Commercial lines of credit, private banking ​ ​ — ​ ​ — ​ ​ — ​ ​ 124 ​ ​ 124 ​ ​ 4 Subtotal ​ 274 ​ 282 ​ 160 ​ 15,803 ​ 15,684 ​ 2,237 Total ​ $ 42,211 ​ $ 42,187 ​ $ 160 ​ $ 75,120 ​ $ 74,034 ​ $ 2,237 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, ​ ​ 2021 ​ 2020 ​ ​ Average ​ Interest ​ Cash Basis ​ Average ​ Interest ​ Cash Basis ​ ​ Recorded ​ Income ​ Interest ​ Recorded ​ Income ​ Interest ​ Investment Recognized Recognized Investment Recognized Recognized With no related allowance for loan losses recorded: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential real estate, first mortgage ​ $ 82 ​ $ — ​ $ — ​ $ 95 ​ $ — ​ $ — Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Retail ​ 7 ​ ​ — ​ ​ — ​ ​ 1,050 ​ ​ 14 ​ ​ 10 Hotels/Single-room occupancy hotels ​ ​ 10,862 ​ ​ — ​ ​ — ​ ​ 13,090 ​ ​ — ​ ​ — Office ​ ​ 2,769 ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — Construction ​ ​ 18,820 ​ ​ 40 ​ ​ 27 ​ ​ 46,310 ​ ​ 221 ​ ​ 92 Commercial lines of credit: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Private banking ​ ​ 119 ​ ​ 2 ​ ​ 1 ​ ​ — ​ ​ — ​ ​ — C&I lending ​ ​ — ​ ​ — ​ ​ — ​ ​ 1,151 ​ ​ — ​ ​ — Subtotal ​ ​ 32,659 ​ ​ 42 ​ ​ 28 ​ 61,696 ​ 235 ​ 102 With an allowance for loan losses recorded: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential real estate, first mortgage ​ ​ 279 ​ ​ 1 ​ ​ 1 ​ 115 ​ 1 ​ 1 Construction ​ ​ 10,387 ​ ​ 56 ​ ​ 38 ​ ​ — ​ ​ — ​ ​ — Commercial lines of credit, private banking ​ ​ — ​ ​ — ​ ​ — ​ ​ 128 ​ ​ 2 ​ ​ 1 Subtotal ​ ​ 10,666 ​ ​ 57 ​ ​ 39 ​ 243 ​ 3 ​ 2 Total ​ $ 43,325 ​ $ 99 ​ $ 67 ​ $ 61,939 ​ $ 238 ​ $ 104 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Nine Months Ended September 30, ​ ​ 2021 ​ 2020 ​ ​ Average ​ Interest ​ Cash Basis ​ Average ​ Interest ​ Cash Basis ​ ​ Recorded ​ Income ​ Interest ​ Recorded ​ Income ​ Interest ​ Investment Recognized Recognized Investment Recognized Recognized With no related allowance for loan losses recorded: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential real estate, first mortgage ​ $ 88 ​ $ — ​ $ — ​ $ 98 ​ $ — ​ $ — Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Retail ​ 765 ​ ​ — ​ ​ — ​ ​ 1,079 ​ ​ 43 ​ ​ 39 Hotels/Single-room occupancy hotels ​ ​ 17,948 ​ ​ — ​ ​ — ​ ​ 13,085 ​ ​ — ​ ​ — Office ​ ​ 2,768 ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — Other ​ ​ 91 ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — Construction ​ ​ 27,387 ​ ​ 192 ​ ​ 179 ​ ​ 44,637 ​ ​ 1,031 ​ ​ 760 Commercial lines of credit: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Private banking ​ ​ 1,264 ​ ​ 7 ​ ​ 7 ​ ​ 934 ​ ​ 42 ​ ​ 35 C&I lending ​ ​ — ​ ​ — ​ ​ — ​ ​ 1,250 ​ ​ — ​ ​ — Subtotal ​ ​ 50,311 ​ ​ 199 ​ ​ 186 ​ 61,083 ​ 1,116 ​ 834 With an allowance for loan losses recorded: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential real estate, first mortgage ​ ​ 280 ​ ​ 3 ​ ​ 3 ​ 116 ​ 4 ​ 3 Construction ​ ​ 9,751 ​ ​ 181 ​ ​ 163 ​ ​ — ​ ​ — ​ ​ — Commercial lines of credit, private banking ​ ​ — ​ ​ — ​ ​ — ​ ​ 129 ​ ​ 5 ​ ​ 4 Subtotal ​ ​ 10,031 ​ ​ 184 ​ ​ 166 ​ 245 ​ 9 ​ 7 Total ​ $ 60,342 ​ $ 383 ​ $ 352 ​ $ 61,328 ​ $ 1,125 ​ $ 841 ​
Schedule of recorded investment in nonaccrual and loans past due over 90 days still on accrual by class of loans and aging of the recorded investment in past due loans	The following table presents the recorded investment in nonaccrual and loans past due over 90 days still on accrual by class of loans as of September 30, 2021 and December 31, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2021 ​ December 31, 2020 ​ ​ ​ ​ ​ Loans Past ​ ​ ​ ​ Loans Past ​ ​ ​ ​ ​ Due Over ​ ​ ​ ​ Due Over ​ ​ ​ ​ ​ 90 Days Still ​ ​ ​ ​ 90 Days Still ​ Nonaccrual Accruing Nonaccrual Accruing Residential real estate: ​ ​ ​ ​ ​ Residential first mortgage ​ $ 41,407 ​ $ 44 ​ $ 20,043 ​ $ 46 Residential second mortgage ​ ​ 236 ​ ​ — ​ ​ 686 ​ ​ — Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Retail ​ 5 ​ — ​ 20 ​ ​ — Multifamily ​ ​ — ​ ​ — ​ ​ — ​ ​ — Offices ​ ​ 2,768 ​ ​ — ​ ​ — ​ ​ — Hotels/Single-room occupancy hotels ​ ​ 10,861 ​ ​ — ​ ​ 19,945 ​ ​ — Construction ​ ​ 22,076 ​ ​ — ​ ​ 41,873 ​ ​ — Commercial lines of credit: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Private banking ​ ​ — ​ ​ — ​ ​ 2,285 ​ ​ — C&I lending ​ ​ — ​ ​ — ​ ​ 1,572 ​ ​ — Total ​ $ 77,353 ​ $ 44 ​ $ 86,424 ​ $ 46 ​ The following tables present the aging of the recorded investment in past due loans as of September 30, 2021 and December 31, 2020 by class of loans: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Greater ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30 - 59 ​ 60 - 89 ​ than ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days ​ Days ​ 89 Days ​ Total ​ Loans Not ​ ​ ​ September 30, 2021 Past Due Past Due Past Due Past Due Past Due Total Residential real estate: ​ ​ ​ ​ ​ ​ Residential first mortgage ​ $ 30,651 ​ $ 8,886 ​ $ 41,451 ​ $ 80,988 ​ $ 1,723,130 ​ $ 1,804,118 Residential second mortgage ​ 157 ​ — ​ 236 ​ 393 ​ 14,122 ​ 14,515 Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Retail ​ — ​ — ​ 5 ​ 5 ​ 15,392 ​ 15,397 Multifamily ​ — ​ 1,519 ​ — ​ 1,519 ​ 125,725 ​ 127,244 Offices ​ — ​ — ​ 2,768 ​ 2,768 ​ 20,499 ​ 23,267 Hotels/Single-room occupancy hotels ​ — ​ — ​ 10,861 ​ 10,861 ​ 66,932 ​ 77,793 Industrial ​ — ​ — ​ — ​ — ​ 5,845 ​ 5,845 Other ​ — ​ 140 ​ — ​ 140 ​ 41,963 ​ 42,103 Construction ​ ​ 6,533 ​ ​ — ​ ​ 22,076 ​ ​ 28,609 ​ ​ 97,962 ​ ​ 126,571 Commercial lines of credit: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Private banking ​ — ​ — ​ — ​ — ​ 118 ​ 118 C&I lending ​ — ​ — ​ — ​ — ​ 1,805 ​ 1,805 Other consumer ​ — ​ — ​ — ​ — ​ 6 ​ 6 Total ​ $ 37,341 ​ $ 10,545 ​ $ 77,397 ​ $ 125,283 ​ $ 2,113,499 ​ $ 2,238,782 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Greater ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30 - 59 ​ 60 - 89 ​ than ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Days ​ Days ​ 89 Days ​ Total ​ Loans Not ​ ​ ​ December 31, 2020 Past Due Past Due Past Due Past Due Past Due Total Residential real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential first mortgage ​ $ 37,819 ​ $ 14,524 ​ $ 20,089 ​ $ 72,432 ​ $ 1,943,602 ​ $ 2,016,034 Residential second mortgage ​ 362 ​ 134 ​ 686 ​ 1,182 ​ 16,310 ​ 17,492 Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Retail ​ 1,010 ​ — ​ 20 ​ 1,030 ​ 15,170 ​ 16,200 Multifamily ​ 3,835 ​ — ​ — ​ 3,835 ​ 75,374 ​ 79,209 Offices ​ — ​ — ​ — ​ — ​ 27,061 ​ 27,061 Hotels/Single-room occupancy hotels ​ — ​ — ​ 19,945 ​ 19,945 ​ 47,690 ​ 67,635 Industrial ​ — ​ — ​ — ​ — ​ 13,186 ​ 13,186 Other ​ — ​ — ​ — ​ — ​ 56,667 ​ 56,667 Construction ​ 8,593 ​ 2,514 ​ 41,873 ​ 52,980 ​ 153,601 ​ 206,581 Commercial lines of credit: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Private banking ​ — ​ — ​ 2,285 ​ 2,285 ​ 124 ​ 2,409 C&I lending ​ — ​ — ​ 1,572 ​ 1,572 ​ 2,690 ​ 4,262 Other consumer ​ — ​ — ​ — ​ — ​ 7 ​ 7 Total ​ $ 51,619 ​ $ 17,172 ​ $ 86,470 ​ $ 155,261 ​ $ 2,351,482 ​ $ 2,506,743
Schedule of troubled debt restructurings	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2021 ​ December 31, 2020 ​ ​ Recorded ​ Allowance for ​ Recorded ​ Allowance for ​ Investment Loan Losses Investment Loan Losses Residential real estate, first mortgage $ 197 $ 39 ​ $ 209 ​ $ 41 Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ Retail ​ ​ 5 ​ ​ — ​ ​ 1,029 ​ ​ — Hotels/Single-room occupancy hotels (1) ​ ​ 2,389 ​ ​ — ​ ​ — ​ ​ — Construction ​ 18,021 ​ — ​ 26,985 ​ 1,906 Commercial lines of credit, private banking ​ 118 ​ — ​ 124 ​ 4 Total ​ $ 20,730 ​ $ 39 ​ $ 28,347 ​ $ 1,951 (1) The recorded investment related to Hotels/Single-room occupancy hotels was reflected in Construction loans at December 31, 2020 .
Schedule of risk rating of loans by class of loans	At September 30, 2021 and December 31, 2020, the risk rating of loans by class of loans was as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Special ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2021 Pass Mention Substandard Doubtful Total Residential real estate: ​ ​ ​ ​ ​ ​ Residential first mortgage ​ $ 1,762,667 ​ $ — ​ $ 41,202 ​ $ 249 ​ $ 1,804,118 Residential second mortgage ​ 14,279 ​ — ​ 236 ​ — ​ 14,515 Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Retail ​ 13,853 ​ 1,539 ​ 5 ​ — ​ 15,397 Multifamily ​ 88,707 ​ 8,894 ​ 29,643 ​ — ​ 127,244 Offices ​ 9,532 ​ 8,938 ​ 4,797 ​ — ​ 23,267 Hotels/ Single-room occupancy hotels ​ 16,278 ​ 22,199 ​ 39,316 ​ — ​ 77,793 Industrial ​ 5,845 ​ — ​ — ​ — ​ 5,845 Other ​ 30,633 ​ 7,061 ​ 4,409 ​ — ​ 42,103 Construction ​ 75,156 ​ 20,178 ​ 25,331 ​ 5,906 ​ 126,571 Commercial lines of credit: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Private banking ​ 118 ​ — ​ — ​ — ​ 118 C&I lending ​ 1,783 ​ 22 ​ — ​ — ​ 1,805 Consumer ​ 6 ​ — ​ — ​ — ​ 6 Total ​ $ 2,018,857 ​ $ 68,831 ​ $ 144,939 ​ $ 6,155 ​ $ 2,238,782 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Special ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 Pass Mention Substandard Doubtful Total Residential real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential first mortgage ​ $ 1,995,945 ​ $ — ​ $ 19,995 ​ $ 94 ​ $ 2,016,034 Residential second mortgage ​ 16,806 ​ — ​ 686 ​ — ​ 17,492 Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Retail ​ 13,599 ​ 1,572 ​ 1,029 ​ — ​ 16,200 Multifamily ​ 55,772 ​ 14,238 ​ 9,199 ​ — ​ 79,209 Offices ​ 12,014 ​ 1,623 ​ 13,424 ​ — ​ 27,061 Hotels/ Single-room occupancy hotels ​ 9,115 ​ 17,984 ​ 40,536 ​ — ​ 67,635 Industrial ​ 5,867 ​ — ​ 7,319 ​ — ​ 13,186 Other ​ 43,193 ​ 7,732 ​ 5,742 ​ — ​ 56,667 Construction ​ 152,577 ​ 14,234 ​ 32,850 ​ 6,920 ​ 206,581 Commercial lines of credit: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Private banking ​ 124 ​ 2,285 ​ — ​ — ​ 2,409 C&I lending ​ 3,573 ​ — ​ 689 ​ — ​ 4,262 Other consumer ​ 7 ​ — ​ — ​ — ​ 7 Total ​ $ 2,308,592 ​ $ 59,668 ​ $ 131,469 ​ $ 7,014 ​ $ 2,506,743

Mortgage Servicing Rights, net

Mortgage Servicing Rights, net (Tables)	9 Months Ended
	Sep. 30, 2021
Mortgage Servicing Rights, net
Schedule of principal balance of mortgage loans serviced for others	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ 2021 2020 Residential real estate mortgage loan portfolios serviced for: ​ ​ FNMA ​ $ 132,829 ​ $ 171,553 FHLB ​ 44,179 ​ 64,661 Private investors ​ 159,935 ​ 429,816 Total ​ $ 336,943 ​ $ 666,030
Schedule of activity for mortgage servicing rights and related valuation allowance	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ ​ September 30, ​ September 30, ​ 2021 2020 2021 2020 Mortgage servicing rights: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning of period ​ $ 4,200 ​ $ 9,569 ​ $ 7,853 ​ $ 10,845 Additions ​ ​ 25 ​ ​ 119 ​ 124 ​ 609 Amortization ​ ​ (550) ​ ​ (1,123) ​ (4,302) ​ (2,889) End of period ​ ​ 3,675 ​ ​ 8,565 ​ 3,675 ​ 8,565 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Valuation allowance at beginning of period ​ ​ 968 ​ ​ 2,303 ​ 2,165 ​ 1,080 Additions (recoveries) ​ ​ (166) ​ ​ (161) ​ (1,363) ​ 1,062 Valuation allowance at end of period ​ ​ 802 ​ ​ 2,142 ​ 802 ​ 2,142 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Mortgage servicing rights, net ​ $ 2,873 ​ $ 6,423 ​ $ 2,873 ​ $ 6,423

FHLB Borrowings (Tables)

FHLB Borrowings (Tables)	9 Months Ended
	Sep. 30, 2021
FHLB Borrowings
Schedule of FHLB borrowings	FHLB borrowings at September 30, 2021 and December 31, 2020 consist of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ ​ ​ December 31, ​ ​ ​ 2021 Interest Rates 2020 Interest Rates Long-term fixed rate advances ​ $ 307,000 0.43%-1.96% ​ $ 318,000 0.43%-1.96% ​

Subordinated Notes, net (Tables

Subordinated Notes, net (Tables)	9 Months Ended
	Sep. 30, 2021
Subordinated Notes, net
Schedule of subordinated notes	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ 2021 2020 Subordinated notes (principal amount) ​ $ 65,000 ​ $ 65,000 Unamortized note premium ​ 360 ​ 411 Unamortized debt issuance costs ​ — ​ (70) Total ​ $ 65,360 ​ $ 65,341

Stock-based Compensation (Table

Stock-based Compensation (Tables)	9 Months Ended
	Sep. 30, 2021
Stock-based Compensation
Summary of the company's stock option activity	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted ​ ​ ​ ​ ​ ​ Weighted ​ Average ​ ​ ​ ​ ​ ​ Average ​ Remaining ​ Aggregate ​ ​ Number ​ Exercise ​ Contractual ​ Intrinsic ​ of Shares Price Term Value ​ ​ ​ ​ ​ ​ ​ (Years) ​ ​ Outstanding at January 1, 2021 ​ 377,882 $ 5.61 ​ 9.09 ​ $ — Granted ​ — ​ ​ — ​ ​ ​ ​ ​ Exercised ​ — ​ ​ — ​ ​ ​ ​ ​ Forfeited/expired ​ (10,115) ​ ​ 12.62 ​ ​ ​ ​ ​ Outstanding at September 30, 2021 ​ 367,767 ​ $ 5.41 ​ 8.39 ​ $ 348 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Exercisable at September 30, 2021 ​ 226,550 $ 4.98 ​ 8.47 $ 232
Summary of the company's restricted stock awards activity	​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted Average ​ ​ Number ​ Grant Date ​ ​ of Shares ​ Fair Value ​ ​ ​ ​ ​ ​ Nonvested at January 1, 2021 137,936 ​ $ 7.90 Granted 234,996 ​ 4.97 Vested (31,906) ​ 7.67 Forfeited (33,257) ​ 6.12 Nonvested at September 30, 2021 307,769 ​ $ 5.87

Income (Loss) Per Share (Tables

Income (Loss) Per Share (Tables)	9 Months Ended
	Sep. 30, 2021
Income (Loss) Per Share
Schedule of computation of income (loss) per share, basic and diluted	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ ​ September 30, ​ September 30, ​ 2021 2020 2021 2020 Numerator: ​ ​ ​ ​ Net income (loss) ​ $ 9,557 ​ $ (111) ​ $ 15,334 ​ $ (1,274) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Denominator: ​ ​ ​ ​ ​ ​ ​ ​ Weighted average common shares outstanding, basic ​ 50,167,295 ​ 49,843,925 ​ 50,010,341 ​ 49,839,860 Weighted average effect of potentially dilutive common shares: ​ ​ ​ ​ ​ ​ ​ ​ Stock options ​ 55,131 ​ — ​ 48,659 ​ — Restricted stock ​ 40,260 ​ — ​ 20,931 ​ — Weighted average common shares outstanding, diluted ​ 50,262,686 ​ 49,843,925 ​ 50,079,931 ​ 49,839,860 ​ ​ ​ ​ ​ ​ ​ ​ ​ Income (loss) per share, basic and diluted ​ $ 0.19 ​ $ (0.00) ​ $ 0.31 ​ $ (0.03)
Schedule of anti-dilutive shares that were excluded from the computation of weighted average diluted shares outstanding	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended Nine Months Ended ​ ​ September 30, ​ September 30, ​ 2021 2020 2021 2020 Stock options 67,767 397,820 70,139 353,018 Restricted stock 7,294 133,284 104,558 177,016 Total 75,061 531,104 174,697 530,034

Fair Values of Financial Inst_2

Fair Values of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2021
Fair Values of Financial Instruments
Schedule of assets measured at fair value on a recurring basis categorized by level of inputs	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements at ​ ​ ​ ​ ​ September 30, 2021 ​ ​ ​ ​ ​ Quoted Prices ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ in Active ​ Significant ​ ​ ​ ​ ​ ​ ​ ​ Markets for ​ Other ​ Significant ​ ​ ​ ​ ​ Identical ​ Observable ​ Unobservable ​ ​ ​ ​ ​ Assets ​ Inputs ​ Inputs ​ Total (Level 1) (Level 2) (Level 3) Financial Assets ​ ​ ​ ​ Available for sale debt securities: ​ ​ ​ ​ U.S. Treasury & Agency securities ​ $ 73,506 ​ $ — ​ $ 73,506 ​ $ — Mortgage-backed securities ​ ​ 26,576 ​ ​ — ​ ​ 26,576 ​ ​ — Collateralized mortgage obligations ​ 99,151 ​ — ​ 99,151 ​ — Collateralized debt obligations ​ 191 ​ — ​ — ​ 191 Equity securities ​ 5,019 ​ 5,019 ​ — ​ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements at ​ ​ ​ ​ ​ December 31, 2020 ​ ​ ​ ​ ​ Quoted Prices ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ in Active ​ Significant ​ ​ ​ ​ ​ ​ ​ ​ Markets for ​ Other ​ Significant ​ ​ ​ ​ ​ Identical ​ Observable ​ Unobservable ​ ​ ​ ​ ​ Assets ​ Inputs ​ Inputs ​ Total (Level 1) (Level 2) (Level 3) Financial Assets ​ ​ ​ ​ Available-for-sale debt securities: ​ ​ ​ ​ U.S. Treasury & Agency securities ​ $ 138,997 ​ $ 40,192 ​ $ 98,805 ​ $ — Mortgage-backed securities ​ ​ 33,814 ​ ​ — ​ ​ 33,814 ​ ​ — Collateralized mortgage obligations ​ 126,596 ​ — ​ 126,596 ​ — Collateralized debt obligations ​ 187 ​ — ​ — ​ 187 Equity securities ​ ​ 5,118 ​ ​ 5,118 ​ ​ — ​ ​ —
Summary of reconciliation for all assets measured at fair value on a recurring basis using significant unobservable inputs	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements Using Significant ​ ​ Unobservable Inputs (Level 3) ​ ​ Collateralized Debt Obligations ​ September 30, 2021 September 30, 2020 Balance of recurring Level 3 assets at beginning of period ​ $ 187 ​ $ 199 Total gains or losses (realized/unrealized): ​ ​ ​ Included in income-realized ​ — ​ — Included in other comprehensive income (loss) ​ 7 ​ (13) Principal maturities/settlements ​ ​ (3) ​ ​ (2) Sales ​ — ​ — Transfers in and/or out of Level 3 ​ — ​ — Balance of recurring Level 3 assets at end of period ​ $ 191 ​ $ 184
Schedule of assets measured at fair value on a nonrecurring basis categorized by level of inputs	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements at September 30, 2021 ​ ​ ​ Quoted Prices in Significant ​ ​ ​ ​ ​ ​ ​ Active Markets ​ Other ​ Significant ​ ​ ​ ​ ​ for Identical ​ Observable ​ Unobservable ​ ​ ​ ​ Assets ​ Inputs ​ Inputs ​ ​ Fair Value ​ (Level 1) ​ (Level 2) ​ (Level 3) Impaired loans: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential real estate ​ $ 43 ​ $ — ​ $ — ​ $ 43 Mortgage servicing rights ​ ​ 2,021 ​ ​ — ​ ​ — ​ ​ 2,021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements at December 31, 2020 ​ ​ ​ Quoted Prices in Significant ​ ​ ​ ​ ​ ​ ​ Active Markets ​ Other ​ Significant ​ ​ ​ ​ ​ for Identical ​ Observable ​ Unobservable ​ ​ ​ ​ Assets ​ Inputs ​ Inputs ​ ​ Fair Value ​ (Level 1) ​ (Level 2) ​ (Level 3) Impaired loans: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial real estate ​ $ 8,240 ​ $ — ​ $ — ​ $ 8,240 Construction ​ ​ 5,015 ​ ​ — ​ ​ — ​ ​ 5,015 Mortgage loans held for sale ​ ​ 19,375 ​ ​ — ​ ​ 19,375 ​ ​ — Mortgage servicing rights ​ ​ 5,175 ​ ​ — ​ ​ — ​ ​ 5,175
Schedule of quantitative information about nonrecurring Level 3 fair value measurements	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Quantitative Information about Level 3 Fair Value Measurements at September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Range ​ Fair Value Valuation Technique Unobservable Inputs (Weighted Average) (1) Impaired loans: ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential real estate ​ $ 43 ​ Sales comparison approach ​ Adjustments for differences between the comparable sales ​ N/A Mortgage servicing rights ​ $ 2,021 ​ Discounted cash flow ​ Discount rate ​ 9.5% - 12.0% ​ ​ ​ Prepayment speed ​ 11.1% - 37.7% ​ ​ ​ ​ ​ ​ ​ Default rate ​ 0.1% - 2.6% (1) The range and weighted average for an asset category consisting of a single investment represents the significant unobservable input used in the fair value of the investment. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Quantitative Information about Level 3 Fair Value Measurements at December 31, 2020 ​ ​ ​ ​ ​ Valuation ​ ​ ​ Range ​ Fair Value Technique Unobservable Inputs ​ (Weighted Average) (1) Impaired loans: ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial real estate ​ $ 8,240 ​ Sales comparison approach/Income capitalization approach ​ Adjustments for differences between the comparable sales and income data for similar loans and collateral underlying such loans ​ N/A Construction ​ $ 5,015 ​ Hybrid of sales comparison and income capitalization approaches ​ Adjustments for differences between the comparable sales and income data for similar loans and collateral underlying such loans ​ N/A Mortgage servicing rights ​ $ 5,175 ​ Discounted cash flow ​ Discount rate ​ 9.5% - 12.0% ​ ​ ​ ​ ​ ​ ​ Prepayment speed ​ 10.5% - 37.0% ​ ​ ​ ​ ​ ​ ​ Default rate ​ 0.1% - 0.2% (1) The range and weighted average for an asset category consisting of a single investment represents the significant unobservable input used in the fair value of the investment.
Schedule of carrying amounts and estimated fair values of financial instruments not carried at fair value	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements at September 30, 2021 ​ ​ Carrying ​ Fair ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amount Value Level 1 Level 2 Level 3 Financial Assets ​ ​ ​ ​ ​ ​ Cash and due from banks ​ $ 609,412 ​ $ 609,412 ​ $ 609,412 ​ $ — ​ $ — Interest-bearing time deposits with other banks ​ 805 ​ 805 ​ — ​ 805 ​ — Mortgage loans held for sale ​ 12,744 ​ 13,266 ​ — ​ 13,266 ​ — Loans, net (1) ​ 2,168,501 ​ 2,288,221 ​ — ​ — ​ 2,288,221 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Financial Liabilities ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Time deposits ​ 961,691 ​ 964,943 ​ — ​ 964,943 ​ — Federal Home Loan Bank borrowings ​ 307,000 ​ 309,868 ​ — ​ 309,868 ​ — Subordinated notes, net ​ 65,360 ​ 65,066 ​ — ​ 65,066 ​ — (1) Excludes impaired loans measured at fair value on a nonrecurring basis at September 30, 2021. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Measurements at December 31, 2020 ​ ​ Carrying ​ Fair ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amount Value Level 1 Level 2 Level 3 Financial Assets ​ ​ ​ ​ ​ ​ Cash and due from banks ​ $ 998,497 ​ $ 998,497 ​ $ 998,497 ​ $ — ​ $ — Interest-bearing time deposits with other banks ​ 7,021 ​ 7,021 ​ 7,021 ​ — ​ — Mortgage loans held for sale ​ 2,909 ​ 3,052 ​ — ​ 3,052 ​ — Loans, net ​ 2,434,356 ​ 2,521,874 ​ — ​ — ​ 2,521,874 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Financial Liabilities ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Time deposits ​ 1,646,523 ​ 1,658,020 ​ — ​ 1,658,020 ​ — Federal Home Loan Bank borrowings ​ 318,000 ​ 328,150 ​ — ​ 328,150 ​ — Subordinated notes, net ​ 65,341 ​ 65,753 ​ — ​ 65,753 ​ —

Regulatory Capital Requiremen_2

Regulatory Capital Requirements (Tables)	9 Months Ended
	Sep. 30, 2021
Regulatory Capital Requirements
Schedule of actual and minimum required capital amounts and ratios	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For Capital ​ To be Well ​ ​ ​ Actual ​ Adequacy Purposes ​ Capitalized ​ Amount Ratio Amount Ratio Amount Ratio September 30, 2021 ​ ​ ​ Total adjusted capital to risk-weighted assets ​ ​ ​ Consolidated ​ $ 407,769 ​ 26.40 % $ 123,564 8.00 % N/A N/A ​ Bank ​ 403,753 ​ 26.37 ​ 122,508 8.00 ​ 153,135 10.00 % Tier 1 (core) capital to risk-weighted assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ 335,833 ​ 21.74 ​ 92,673 6.00 ​ N/A N/A ​ Bank ​ 383,980 ​ 25.07 ​ 91,881 6.00 ​ 122,508 8.00 ​ Common Equity Tier 1 (CET1) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ 335,833 ​ 21.74 ​ 69,505 ​ 4.50 ​ N/A N/A ​ Bank ​ 383,980 ​ 25.07 ​ 68,911 4.50 ​ 99,538 6.50 ​ Tier 1 (core) capital to adjusted tangible assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ 335,833 ​ 10.32 ​ 130,158 4.00 ​ N/A N/A ​ Bank ​ 383,980 ​ 11.85 ​ 129,606 4.00 ​ 162,008 5.00 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For Capital ​ To be Well ​ ​ ​ Actual ​ Adequacy Purposes ​ Capitalized ​ Amount Ratio Amount Ratio Amount Ratio December 31, 2020 ​ ​ ​ Total adjusted capital to risk-weighted assets ​ ​ ​ Consolidated ​ $ 407,733 ​ 22.58 % $ 144,466 ​ 8.00 % N/A N/A ​ Bank ​ 386,237 ​ 21.56 ​ 143,339 ​ 8.00 ​ 179,174 10.00 % Tier 1 (core) capital to risk-weighted assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ 319,204 ​ 17.68 ​ 108,350 ​ 6.00 ​ N/A N/A ​ Bank ​ 363,224 ​ 20.27 ​ 107,504 ​ 6.00 ​ 143,339 8.00 ​ Common Equity Tier 1 (CET1) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ 319,204 ​ 17.68 ​ 81,262 ​ 4.50 ​ N/A N/A ​ Bank ​ 363,224 ​ 20.27 ​ 80,628 ​ 4.50 ​ 116,463 6.50 ​ Tier 1 (core) capital to adjusted tangible assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ 319,204 ​ 8.08 ​ 158,067 ​ 4.00 ​ N/A N/A ​ Bank ​ 363,224 ​ 9.20 ​ 157,954 ​ 4.00 ​ 197,442 5.00 ​

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies
Summary of total amount of unfunded commitments to extend credit and standby letters of credit outstanding	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ 2021 2020 Commitments to make loans ​ $ 34,752 ​ $ 40,331 Unused lines of credit ​ 58,043 ​ 140,665 Standby letters of credit ​ 24 ​ 24
Schedule of activity in the mortgage repurchase liability	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Nine Months Ended ​ ​ September 30, ​ 2021 2020 Balance, beginning of period ​ $ 9,699 ​ $ 7,823 Net provision (recovery) ​ (963) ​ 25 Loss on loan repurchases ​ (5,511) ​ (651) Balance, end of the period ​ $ 3,225 ​ $ 7,197
Schedule of Advantage Loan Program loans to be repurchased by date range	​ ​ ​ ​ ​ ​ ​ Outstanding ​ ​ Principal Balance at Repurchase Date Range September 30, 2021 February 28, 2022 – February 28, 2023 ​ $ 15,609 May 21, 2022 – May 21, 2023 ​ 15,565 July 25, 2022 – July 25, 2023 ​ 19,276 Present – July 22, 2023 ​ 33,227 ​ ​ $ 83,677

Nature of Operations and Basi_2

Nature of Operations and Basis of Presentation (Details) $ in Thousands	1 Months Ended	3 Months Ended	9 Months Ended
	Jul. 31, 2021USD ($)	Sep. 30, 2021USD ($)	Sep. 30, 2021USD ($)itemsegment
Nature of Operations and Basis of Presentation
Number of branches | item			29
Number of reportable segments | segment			1
Gain on sale of branch transaction		$ 1,417	$ 1,417
Net cash paid on sale of branch office	$ 63,545		63,545
Bellevue, Washington branch office
Nature of Operations and Basis of Presentation
Customer deposits transferred	$ 65,437
Gain on sale of branch transaction		$ 1,417	$ 1,417
San Francisco and Los Angeles, California
Nature of Operations and Basis of Presentation
Number of branches | item			26

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Concentration of Credit Risk (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020	Dec. 21, 2020
Concentration of Credit Risk
Disposal Group, Including Discontinued Operation, Consideration			$ 250
Loans Receivable	$ 2,238,782	$ 2,506,743
Mortgage loans held for sale	12,744	22,284
Residential real estate
Concentration of Credit Risk
Loans Receivable	$ 1,818,633	$ 2,033,526
Residential real estate loans | Loans receivables | Residential real estate
Concentration of Credit Risk
Concentration of credit risk	81.00%	81.00%
California | Loans receivables | Residential real estate
Concentration of Credit Risk
Concentration of credit risk	85.00%	87.00%
Advantage loan program | Loans receivables | Residential real estate
Concentration of Credit Risk
Concentration of credit risk	71.00%	74.00%
Loans Receivable	$ 1,299,438	$ 1,515,248
Mortgage loans held for sale	11,993	$ 19,375
Nonaccrual loans held for sale	$ 8,744

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Employee Retention Credits under CARES Act (Details) $ in Thousands	3 Months Ended			9 Months Ended	12 Months Ended
	Sep. 30, 2021USD ($)	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2021USD ($)	Dec. 31, 2019employee
CARES Act ERC tax credit benefit recorded	$ 6,529			$ 6,529
CARES Act ERC tax credit receivable	$ 6,529			$ 6,529
Maximum
Average number of employees | employee					500
Minimum
Decrease in gross receipts (percentage)	0.20	0.20	0.20

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Reclassification (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Reclassification
Accrued expenses and other liabilities	$ 70,438	$ 85,599
Noninterest-bearing deposits	$ 65,456	64,509
Revision of Prior Period, Reclassification, Adjustment
Reclassification
Accrued expenses and other liabilities		(6,051)
Noninterest-bearing deposits		$ 6,051

Investment Securities - Amortiz

Investment Securities - Amortized Cost and Fair Value Corresponding Gross Unrealized Gains and Losses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Available for sale:
Available for sale, Amortized Cost		$ 199,107		$ 299,058
Available for sale, Gross Unrealized Gain		694		955
Available for sale, Gross Unrealized Loss		(377)		(419)
Investment securities available for sale, at fair value		199,424		299,594
Securities pledged as collateral on FHLB borrowings		479,048		630,197
Carrying value of debt securities held of any single issuer in excess of 10% of shareholders equity		$ 0		$ 0
Threshold percentage of total shareholders' equity above which securities of any single issuer exceed		10.00%		10.00%
Sales of investment securities	$ 40,612	$ 0	$ 99,971
Gross realized gains	58		336
Gross realized losses	$ (78)		$ (157)
Collateralized mortgage obligations | US Government Corporations and Agencies Securities
Available for sale:
Investment securities available for sale, at fair value		632		$ 816
Debt securities
Available for sale:
Securities pledged as collateral on FHLB borrowings		73,506
U.S. Treasury & Agency securities
Available for sale:
Available for sale, Amortized Cost		73,427		138,742
Available for sale, Gross Unrealized Gain		79		255
Investment securities available for sale, at fair value		73,506		138,997
Mortgage-backed securities
Available for sale:
Available for sale, Amortized Cost		26,833		33,743
Available for sale, Gross Unrealized Gain		57		72
Available for sale, Gross Unrealized Loss		(314)		(1)
Investment securities available for sale, at fair value		26,576		33,814
Collateralized mortgage obligations
Available for sale:
Available for sale, Amortized Cost		98,636		126,359
Available for sale, Gross Unrealized Gain		558		628
Available for sale, Gross Unrealized Loss		(43)		(391)
Investment securities available for sale, at fair value		99,151		126,596
Collateralized debt obligations
Available for sale:
Available for sale, Amortized Cost		211		214
Available for sale, Gross Unrealized Loss		(20)		(27)
Investment securities available for sale, at fair value		$ 191		$ 187

Investment Securities - Amort_2

Investment Securities - Amortized Cost and Fair Value By Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Available for sale, Amortized Cost
Available for sale, Amortized Cost	$ 199,107	$ 299,058
Available for sale, Fair Value
Available for sale, Fair Value	199,424	299,594
U.S. Treasury & Agency securities
Available for sale, Amortized Cost
Due less than one year	50,427
Due after one year through five years	23,000
Available for sale, Amortized Cost	73,427	138,742
Available for sale, Fair Value
Due less than one year	50,458
Due after one year through five years	23,048
Available for sale, Fair Value	73,506	138,997
Mortgage-backed securities
Available for sale, Amortized Cost
Available for sale, Amortized Cost	26,833	33,743
Available for sale, Fair Value
Available for sale, Fair Value	26,576	33,814
Collateralized mortgage obligations
Available for sale, Amortized Cost
Available for sale, Amortized Cost	98,636	126,359
Available for sale, Fair Value
Available for sale, Fair Value	99,151	126,596
Collateralized debt obligations
Available for sale, Amortized Cost
Available for sale, Amortized Cost	211	214
Available for sale, Fair Value
Available for sale, Fair Value	$ 191	$ 187

Investment Securities - Aggrega

Investment Securities - Aggregated by Major Security Type and Length of Time in a Continuous Unrealized Loss Position (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2021USD ($)security	Dec. 31, 2020USD ($)
Fair Value
Less than 12 Months, Fair value	$ 56,546	$ 81,434
12 Months or More, Fair Value	191	187
Available for sale, Continuous unrealized loss position, Fair Value	56,737	81,621
Unrealized Losses
Less than 12 Months, Unrealized Losses	(357)	(392)
12 Months or More, Unrealized Losses	(20)	(27)
Available for sale, Continuous unrealized loss position, Unrealized Losses	$ (377)	(419)
Number of debt securities in portfolio | security	22
Number of debt securities in an unrealized loss position | security	10
Mortgage-backed securities
Fair Value
Less than 12 Months, Fair value	$ 8,818	5,694
Available for sale, Continuous unrealized loss position, Fair Value	8,818	5,694
Unrealized Losses
Less than 12 Months, Unrealized Losses	(314)	(1)
Available for sale, Continuous unrealized loss position, Unrealized Losses	(314)	(1)
Collateralized mortgage obligations
Fair Value
Less than 12 Months, Fair value	47,728	75,740
Available for sale, Continuous unrealized loss position, Fair Value	47,728	75,740
Unrealized Losses
Less than 12 Months, Unrealized Losses	(43)	(391)
Available for sale, Continuous unrealized loss position, Unrealized Losses	(43)	(391)
Collateralized debt obligations
Fair Value
12 Months or More, Fair Value	191	187
Available for sale, Continuous unrealized loss position, Fair Value	191	187
Unrealized Losses
12 Months or More, Unrealized Losses	(20)	(27)
Available for sale, Continuous unrealized loss position, Unrealized Losses	$ (20)	$ (27)

Investment Securities - Equity

Investment Securities - Equity Securities (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Equity Securities
Fair value of equity securities	$ 5,265	$ 5,265		$ 5,364
Equity securities with readily determinable fair values	5,019	5,019		5,118
Equity securities with readily determinable fair values
Net gains (losses) recorded during the period on equity securities	(24)	(99)	$ 123
Unrealized gains (losses) recorded during the period on equity securities held at the reporting date	(24)	(99)	$ 123
Level 3
Equity Securities
Investment in equity securities without readily determinable fair value	$ 246	$ 246		$ 246

Loans - Major Categories of Loa

Loans - Major Categories of Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Major categories of loans
Total loans	$ 2,238,782		$ 2,506,743
Less: allowance for loan losses	(70,238)	$ (70,669)	(72,387)	$ (48,258)	$ (46,931)	$ (21,730)
Loans, net	2,168,544		2,434,356
Carrying value of loans pledged as collateral on FHLB borrowings	479,048		630,197
Residential real estate
Major categories of loans
Total loans	1,818,633		2,033,526
Less: allowance for loan losses	(33,703)	(33,064)	(32,366)	(18,240)	(18,812)	(12,336)
Loans, net	261,607		562,139
Commercial real estate
Major categories of loans
Total loans	291,649		259,958
Less: allowance for loan losses	(24,582)	(22,491)	(21,942)	(17,555)	(15,770)	(5,243)
Construction
Major categories of loans
Total loans	126,571		206,581
Less: allowance for loan losses	(11,899)	(15,056)	(17,988)	(11,921)	(11,998)	(3,822)
Commercial lines of credit
Major categories of loans
Total loans	1,923		6,671
Less: allowance for loan losses	(54)	$ (58)	(91)	$ (542)	(350)	(328)
Other consumer
Major categories of loans
Total loans	$ 6		$ 7
Less: allowance for loan losses					$ (1)	$ (1)

Loans - Activity in the Allowan

Loans - Activity in the Allowance For Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Allowance for loan losses
Beginning balance	$ 70,669	$ 46,931	$ 72,387	$ 21,730
Provision (recovery) for loan losses	397	2,123	(2,146)	27,273
Charge offs	(1,965)	(815)	(1,965)	(815)
Recoveries	1,137	19	1,962	70
Total ending balance	70,238	48,258	70,238	48,258
Residential real estate
Allowance for loan losses
Beginning balance	33,064	18,812	32,366	12,336
Provision (recovery) for loan losses	109	(467)	16	5,997
Charge offs		(108)		(108)
Recoveries	530	3	1,321	15
Total ending balance	33,703	18,240	33,703	18,240
Commercial real estate
Allowance for loan losses
Beginning balance	22,491	15,770	21,942	5,243
Provision (recovery) for loan losses	1,486	1,771	2,004	12,262
Recoveries	605	14	636	50
Total ending balance	24,582	17,555	24,582	17,555
Construction
Allowance for loan losses
Beginning balance	15,056	11,998	17,988	3,822
Provision (recovery) for loan losses	(1,194)	628	(4,129)	8,801
Charge offs	(1,965)	(707)	(1,965)	(707)
Recoveries	2	2	5	5
Total ending balance	11,899	11,921	11,899	11,921
Commercial lines of credit
Allowance for loan losses
Beginning balance	58	350	91	328
Provision (recovery) for loan losses	(4)	192	(37)	214
Total ending balance	$ 54	542	$ 54	542
Other consumer
Allowance for loan losses
Beginning balance		1		1
Provision (recovery) for loan losses		$ (1)		$ (1)

Loans - Activity in the Allow_2

Loans - Activity in the Allowance For Loan Losses by Portfolio Segment And Based On Impairment Evaluation Method (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Ending allowance balance attributable to loans:
Individually evaluated for impairment	$ 160		$ 2,237
Collectively evaluated for impairment	70,078		70,150
Total ending allowance balance	70,238	$ 70,669	72,387	$ 48,258	$ 46,931	$ 21,730
Loans:
Loans individually evaluated for impairment	42,187		74,034
Loans collectively evaluated for impairment	2,196,595		2,432,709
Total loans	2,238,782		2,506,743
Residential real estate
Ending allowance balance attributable to loans:
Individually evaluated for impairment	160		41
Collectively evaluated for impairment	33,543		32,325
Total ending allowance balance	33,703	33,064	32,366	18,240	18,812	12,336
Loans:
Loans individually evaluated for impairment	364		208
Loans collectively evaluated for impairment	1,818,269		2,033,318
Total loans	1,818,633		2,033,526
Commercial real estate
Ending allowance balance attributable to loans:
Individually evaluated for impairment			287
Collectively evaluated for impairment	24,582		21,655
Total ending allowance balance	24,582	22,491	21,942	17,555	15,770	5,243
Loans:
Loans individually evaluated for impairment	13,634		20,974
Loans collectively evaluated for impairment	278,015		238,984
Total loans	291,649		259,958
Construction
Ending allowance balance attributable to loans:
Individually evaluated for impairment			1,905
Collectively evaluated for impairment	11,899		16,083
Total ending allowance balance	11,899	15,056	17,988	11,921	11,998	3,822
Loans:
Loans individually evaluated for impairment	28,071		48,871
Loans collectively evaluated for impairment	98,500		157,710
Total loans	126,571		206,581
Commercial lines of credit
Ending allowance balance attributable to loans:
Individually evaluated for impairment			4
Collectively evaluated for impairment	54		87
Total ending allowance balance	54	$ 58	91	$ 542	350	328
Loans:
Loans individually evaluated for impairment	118		3,981
Loans collectively evaluated for impairment	1,805		2,690
Total loans	1,923		6,671
Other consumer
Ending allowance balance attributable to loans:
Total ending allowance balance					$ 1	$ 1
Loans:
Loans collectively evaluated for impairment	6		7
Total loans	$ 6		$ 7

Loans - Impaired Loans by Class

Loans - Impaired Loans by Class of Loans (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
Impaired loans by class of loans
Unpaid principal balance, with no related allowance for loan losses recorded	$ 41,937		$ 41,937		$ 59,317
Unpaid principal balance, with an allowance for loan losses recorded	274		274		15,803
Total Unpaid Principal Balance	42,211		42,211		75,120
Recorded investment, with no related allowance for loan losses recorded	41,905		41,905		58,350
Recorded investment, with an allowance for loan losses recorded	282		282		15,684
Total Recorded Investment	42,187		42,187		74,034
Allowance for Loan Losses	160		160		2,237
Average recorded investment, with no related allowance for loan losses recorded	32,659	$ 61,696	50,311	$ 61,083
Average recorded investment, with an allowance for loan losses recorded	10,666	243	10,031	245
Total Average Recorded Investment	43,325	61,939	60,342	61,328
Interest Income Recognized, with no related allowance for loan losses recorded	42	235	199	1,116
Interest Income Recognized, with an allowance for loan losses recorded	57	3	184	9
Total Interest Income Recognized	99	238	383	1,125
Cash Basis Interest Recognized, with no related allowance for loan losses recorded	28	102	186	834
Cash Basis Interest Recognized, with an allowance for loan losses recorded	39	2	166	7
Total Cash Basis Interest Recognized	67	104	352	841
Residential real estate | Real estate loan, first mortgage
Impaired loans by class of loans
Unpaid principal balance, with no related allowance for loan losses recorded	106		106		116
Unpaid principal balance, with an allowance for loan losses recorded	274		274		114
Recorded investment, with no related allowance for loan losses recorded	82		82		94
Recorded investment, with an allowance for loan losses recorded	282		282		114
Allowance for Loan Losses	160		160		41
Average recorded investment, with no related allowance for loan losses recorded	82	95	88	98
Average recorded investment, with an allowance for loan losses recorded	279	115	280	116
Interest Income Recognized, with an allowance for loan losses recorded	1	1	3	4
Cash Basis Interest Recognized, with an allowance for loan losses recorded	1	1	3	3
Commercial real estate | Real estate loan, Retail
Impaired loans by class of loans
Unpaid principal balance, with no related allowance for loan losses recorded	5		5		1,247
Recorded investment, with no related allowance for loan losses recorded	5		5		1,029
Average recorded investment, with no related allowance for loan losses recorded	7	1,050	765	1,079
Interest Income Recognized, with no related allowance for loan losses recorded		14		43
Cash Basis Interest Recognized, with no related allowance for loan losses recorded		10		39
Commercial real estate | Real estate loan, Offices
Impaired loans by class of loans
Unpaid principal balance, with no related allowance for loan losses recorded	2,768		2,768
Recorded investment, with no related allowance for loan losses recorded	2,768		2,768
Average recorded investment, with no related allowance for loan losses recorded	2,769		2,768
Commercial real estate | Real estate loan, Hotels/Single-room occupancy hotels
Impaired loans by class of loans
Unpaid principal balance, with no related allowance for loan losses recorded	10,800		10,800		11,428
Unpaid principal balance, with an allowance for loan losses recorded					8,645
Recorded investment, with no related allowance for loan losses recorded	10,861		10,861		11,419
Recorded investment, with an allowance for loan losses recorded					8,526
Allowance for Loan Losses					287
Average recorded investment, with no related allowance for loan losses recorded	10,862	13,090	17,948	13,085
Commercial real estate | Real Estate Loan, Other
Impaired loans by class of loans
Average recorded investment, with no related allowance for loan losses recorded			91
Construction
Impaired loans by class of loans
Unpaid principal balance, with no related allowance for loan losses recorded	28,140		28,140		42,669
Unpaid principal balance, with an allowance for loan losses recorded					6,920
Recorded investment, with no related allowance for loan losses recorded	28,071		28,071		41,951
Recorded investment, with an allowance for loan losses recorded					6,920
Allowance for Loan Losses					1,905
Average recorded investment, with no related allowance for loan losses recorded	18,820	46,310	27,387	44,637
Average recorded investment, with an allowance for loan losses recorded	10,387		9,751
Interest Income Recognized, with no related allowance for loan losses recorded	40	221	192	1,031
Interest Income Recognized, with an allowance for loan losses recorded	56		181
Cash Basis Interest Recognized, with no related allowance for loan losses recorded	27	92	179	760
Cash Basis Interest Recognized, with an allowance for loan losses recorded	38		163
Commercial lines of credit | Private banking
Impaired loans by class of loans
Unpaid principal balance, with no related allowance for loan losses recorded	118		118		3,857
Unpaid principal balance, with an allowance for loan losses recorded					124
Recorded investment, with no related allowance for loan losses recorded	118		118		3,857
Recorded investment, with an allowance for loan losses recorded					124
Allowance for Loan Losses					$ 4
Average recorded investment, with no related allowance for loan losses recorded	119		1,264	934
Average recorded investment, with an allowance for loan losses recorded		128		129
Interest Income Recognized, with no related allowance for loan losses recorded	2		7	42
Interest Income Recognized, with an allowance for loan losses recorded		2		5
Cash Basis Interest Recognized, with no related allowance for loan losses recorded	$ 1		$ 7	35
Cash Basis Interest Recognized, with an allowance for loan losses recorded		1		4
Commercial lines of credit | C&I lending
Impaired loans by class of loans
Average recorded investment, with no related allowance for loan losses recorded		$ 1,151		$ 1,250

Loans - Investment in Nonaccrua

Loans - Investment in Nonaccrual and Loans Past Due Still Accruing by Class of Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Investment in nonaccrual and loans past due still accruing by class of loans
Nonaccrual	$ 77,353	$ 86,424
Loans Past Due Over 90 Days Still Accruing	44	46
Total	2,238,782	2,506,743
Not Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	2,113,499	2,351,482
Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	125,283	155,261
30 - 59 Days Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	37,341	51,619
60 - 89 Days Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	10,545	17,172
Greater than 89 Days Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	77,397	86,470
Residential real estate
Investment in nonaccrual and loans past due still accruing by class of loans
Total	1,818,633	2,033,526
Residential real estate | Real estate loan, first mortgage
Investment in nonaccrual and loans past due still accruing by class of loans
Nonaccrual	41,407	20,043
Loans Past Due Over 90 Days Still Accruing	44	46
Total	1,804,118	2,016,034
Residential real estate | Real estate loan, first mortgage | Not Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	1,723,130	1,943,602
Residential real estate | Real estate loan, first mortgage | Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	80,988	72,432
Residential real estate | Real estate loan, first mortgage | 30 - 59 Days Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	30,651	37,819
Residential real estate | Real estate loan, first mortgage | 60 - 89 Days Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	8,886	14,524
Residential real estate | Real estate loan, first mortgage | Greater than 89 Days Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	41,451	20,089
Residential real estate | Real estate loan, second mortgage
Investment in nonaccrual and loans past due still accruing by class of loans
Nonaccrual	236	686
Total	14,515	17,492
Residential real estate | Real estate loan, second mortgage | Not Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	14,122	16,310
Residential real estate | Real estate loan, second mortgage | Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	393	1,182
Residential real estate | Real estate loan, second mortgage | 30 - 59 Days Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	157	362
Residential real estate | Real estate loan, second mortgage | 60 - 89 Days Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total		134
Residential real estate | Real estate loan, second mortgage | Greater than 89 Days Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	236	686
Commercial real estate
Investment in nonaccrual and loans past due still accruing by class of loans
Total	291,649	259,958
Commercial real estate | Real estate loan, Retail
Investment in nonaccrual and loans past due still accruing by class of loans
Nonaccrual	5	20
Total	15,397	16,200
Commercial real estate | Real estate loan, Retail | Not Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	15,392	15,170
Commercial real estate | Real estate loan, Retail | Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	5	1,030
Commercial real estate | Real estate loan, Retail | 30 - 59 Days Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total		1,010
Commercial real estate | Real estate loan, Retail | Greater than 89 Days Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	5	20
Commercial real estate | Real estate loan, Multifamily
Investment in nonaccrual and loans past due still accruing by class of loans
Total	127,244	79,209
Commercial real estate | Real estate loan, Multifamily | Not Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	125,725	75,374
Commercial real estate | Real estate loan, Multifamily | Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	1,519	3,835
Commercial real estate | Real estate loan, Multifamily | 30 - 59 Days Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total		3,835
Commercial real estate | Real estate loan, Multifamily | 60 - 89 Days Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	1,519
Commercial real estate | Real estate loan, Offices
Investment in nonaccrual and loans past due still accruing by class of loans
Nonaccrual	2,768
Total	23,267	27,061
Commercial real estate | Real estate loan, Offices | Not Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	20,499	27,061
Commercial real estate | Real estate loan, Offices | Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	2,768
Commercial real estate | Real estate loan, Offices | Greater than 89 Days Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	2,768
Commercial real estate | Real estate loan, Hotels/Single-room occupancy hotels
Investment in nonaccrual and loans past due still accruing by class of loans
Nonaccrual	10,861	19,945
Total	77,793	67,635
Commercial real estate | Real estate loan, Hotels/Single-room occupancy hotels | Not Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	66,932	47,690
Commercial real estate | Real estate loan, Hotels/Single-room occupancy hotels | Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	10,861	19,945
Commercial real estate | Real estate loan, Hotels/Single-room occupancy hotels | Greater than 89 Days Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	10,861	19,945
Commercial real estate | Real estate loan, Industrial
Investment in nonaccrual and loans past due still accruing by class of loans
Total	5,845	13,186
Commercial real estate | Real estate loan, Industrial | Not Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	5,845	13,186
Commercial real estate | Real estate loan, Other
Investment in nonaccrual and loans past due still accruing by class of loans
Total	42,103	56,667
Commercial real estate | Real estate loan, Other | Not Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	41,963	56,667
Commercial real estate | Real estate loan, Other | Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	140
Commercial real estate | Real estate loan, Other | 60 - 89 Days Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	140
Construction
Investment in nonaccrual and loans past due still accruing by class of loans
Nonaccrual	22,076	41,873
Total	126,571	206,581
Construction | Not Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	97,962	153,601
Construction | Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	28,609	52,980
Construction | 30 - 59 Days Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	6,533	8,593
Construction | 60 - 89 Days Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total		2,514
Construction | Greater than 89 Days Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	22,076	41,873
Commercial lines of credit
Investment in nonaccrual and loans past due still accruing by class of loans
Total	1,923	6,671
Commercial lines of credit | Private banking
Investment in nonaccrual and loans past due still accruing by class of loans
Nonaccrual		2,285
Total	118	2,409
Commercial lines of credit | Private banking | Not Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	118	124
Commercial lines of credit | Private banking | Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total		2,285
Commercial lines of credit | Private banking | Greater than 89 Days Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total		2,285
Commercial lines of credit | C&I lending
Investment in nonaccrual and loans past due still accruing by class of loans
Nonaccrual		1,572
Total	1,805	4,262
Commercial lines of credit | C&I lending | Not Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	1,805	2,690
Commercial lines of credit | C&I lending | Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total		1,572
Commercial lines of credit | C&I lending | Greater than 89 Days Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total		1,572
Other consumer
Investment in nonaccrual and loans past due still accruing by class of loans
Total	6	7
Other consumer | Not Past Due
Investment in nonaccrual and loans past due still accruing by class of loans
Total	$ 6	$ 7

Loans - Troubled Debt Restructu

Loans - Troubled Debt Restructurings (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2021USD ($)itemloan	Sep. 30, 2020USD ($)loan	Dec. 31, 2020USD ($)
Troubled Debt Restructurings
Loans classified as troubled debt restructurings	$ 20,730		$ 28,347
Allowance for outstanding loan losses classified as troubled debt restructurings	$ 39		1,951
Number of loans modified during the period, that were considered as TDRs | loan	0
Number of TDRs subsequently defaulted | loan		4
Accrued interest receivable under the CARES Act COVID-19 forbearance program	$ 1		$ 146
Loans that remain in payment deferral under the CARES Act COVID-19 forbearance program	1,001		15,785
Private banking
Troubled Debt Restructurings
Number of loans modified during the period, that were considered as TDRs | loan		1
Six Loans
Troubled Debt Restructurings
Troubled debt restructuring that defaulted within one year of modification	$ 18,012
Number of TDRs subsequently defaulted | loan	6
Real estate loan, first mortgage
Troubled Debt Restructurings
Loans classified as troubled debt restructurings	$ 197		$ 209
Allowance for outstanding loan losses classified as troubled debt restructurings	39		41
Residential real estate
Troubled Debt Restructurings
Loans secured by residential real estate properties in the process of foreclosure	2,071		5,320
Commercial real estate
Troubled Debt Restructurings
Troubled debt restructuring that defaulted within one year of modification	$ 2,389
Number of TDRs subsequently defaulted | item	1
Commercial real estate | Real estate loan, Retail
Troubled Debt Restructurings
Loans classified as troubled debt restructurings	$ 5		1,029
Commercial real estate | Real estate loan, Hotels/Single-room occupancy hotels
Troubled Debt Restructurings
Loans classified as troubled debt restructurings	2,389
Construction
Troubled Debt Restructurings
Loans classified as troubled debt restructurings	18,021		26,985
Allowance for outstanding loan losses classified as troubled debt restructurings			1,906
Troubled debt restructuring that defaulted within one year of modification	$ 10,275	$ 12,482
Number of loans modified during the period, that were considered as TDRs | loan		3
Number of TDRs subsequently defaulted | loan	2
Construction loans and private banking loan | Pre and Post Modification
Troubled Debt Restructurings
Loans classified as troubled debt restructurings		$ 13,777
Commercial lines of credit and private banking
Troubled Debt Restructurings
Loans classified as troubled debt restructurings	$ 118		124
Allowance for outstanding loan losses classified as troubled debt restructurings			4
Mortgage loans held for sale | Residential real estate
Troubled Debt Restructurings
Loans secured by residential real estate properties in the process of foreclosure	$ 2,061		$ 3,209

Loans - Risk Rating of Loans by

Loans - Risk Rating of Loans by Class of Loans (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
Recorded investment in loans
Total	$ 2,238,782		$ 2,238,782		$ 2,506,743
Advantage Loan Program
Recorded investment in loans
Total	192,683		192,683		57,039
Outstanding principal balance of loans repurchased	6,067	$ 30,934	173,829	$ 69,638
Pass
Recorded investment in loans
Total	2,018,857		2,018,857		2,308,592
Special Mention
Recorded investment in loans
Total	68,831		68,831		59,668
Substandard
Recorded investment in loans
Total	144,939		144,939		131,469
Doubtful
Recorded investment in loans
Total	6,155		6,155		7,014
Residential real estate
Recorded investment in loans
Total	1,818,633		1,818,633		2,033,526
Residential real estate | Real estate loan, first mortgage
Recorded investment in loans
Total	1,804,118		1,804,118		2,016,034
Residential real estate | Real estate loan, second mortgage
Recorded investment in loans
Total	14,515		14,515		17,492
Residential real estate | Pass | Real estate loan, first mortgage
Recorded investment in loans
Total	1,762,667		1,762,667		1,995,945
Residential real estate | Pass | Real estate loan, second mortgage
Recorded investment in loans
Total	14,279		14,279		16,806
Residential real estate | Substandard | Real estate loan, first mortgage
Recorded investment in loans
Total	41,202		41,202		19,995
Residential real estate | Substandard | Real estate loan, second mortgage
Recorded investment in loans
Total	236		236		686
Residential real estate | Doubtful | Real estate loan, first mortgage
Recorded investment in loans
Total	249		249		94
Commercial real estate
Recorded investment in loans
Total	291,649		291,649		259,958
Commercial real estate | Real estate loan, Retail
Recorded investment in loans
Total	15,397		15,397		16,200
Commercial real estate | Real estate loan, Multifamily
Recorded investment in loans
Total	127,244		127,244		79,209
Commercial real estate | Real estate loan, Offices
Recorded investment in loans
Total	23,267		23,267		27,061
Commercial real estate | Real estate loan, Hotels/Single-room occupancy hotels
Recorded investment in loans
Total	77,793		77,793		67,635
Commercial real estate | Real estate loan, Industrial
Recorded investment in loans
Total	5,845		5,845		13,186
Commercial real estate | Real estate loan, Other
Recorded investment in loans
Total	42,103		42,103		56,667
Commercial real estate | Pass | Real estate loan, Retail
Recorded investment in loans
Total	13,853		13,853		13,599
Commercial real estate | Pass | Real estate loan, Multifamily
Recorded investment in loans
Total	88,707		88,707		55,772
Commercial real estate | Pass | Real estate loan, Offices
Recorded investment in loans
Total	9,532		9,532		12,014
Commercial real estate | Pass | Real estate loan, Hotels/Single-room occupancy hotels
Recorded investment in loans
Total	16,278		16,278		9,115
Commercial real estate | Pass | Real estate loan, Industrial
Recorded investment in loans
Total	5,845		5,845		5,867
Commercial real estate | Pass | Real estate loan, Other
Recorded investment in loans
Total	30,633		30,633		43,193
Commercial real estate | Special Mention | Real estate loan, Retail
Recorded investment in loans
Total	1,539		1,539		1,572
Commercial real estate | Special Mention | Real estate loan, Multifamily
Recorded investment in loans
Total	8,894		8,894		14,238
Commercial real estate | Special Mention | Real estate loan, Offices
Recorded investment in loans
Total	8,938		8,938		1,623
Commercial real estate | Special Mention | Real estate loan, Hotels/Single-room occupancy hotels
Recorded investment in loans
Total	22,199		22,199		17,984
Commercial real estate | Special Mention | Real estate loan, Other
Recorded investment in loans
Total	7,061		7,061		7,732
Commercial real estate | Substandard | Real estate loan, Retail
Recorded investment in loans
Total	5		5		1,029
Commercial real estate | Substandard | Real estate loan, Multifamily
Recorded investment in loans
Total	29,643		29,643		9,199
Commercial real estate | Substandard | Real estate loan, Offices
Recorded investment in loans
Total	4,797		4,797		13,424
Commercial real estate | Substandard | Real estate loan, Hotels/Single-room occupancy hotels
Recorded investment in loans
Total	39,316		39,316		40,536
Commercial real estate | Substandard | Real estate loan, Industrial
Recorded investment in loans
Total					7,319
Commercial real estate | Substandard | Real estate loan, Other
Recorded investment in loans
Total	4,409		4,409		5,742
Construction
Recorded investment in loans
Total	126,571		126,571		206,581
Construction | Pass
Recorded investment in loans
Total	75,156		75,156		152,577
Construction | Special Mention
Recorded investment in loans
Total	20,178		20,178		14,234
Construction | Substandard
Recorded investment in loans
Total	25,331		25,331		32,850
Construction | Doubtful
Recorded investment in loans
Total	5,906		5,906		6,920
Commercial lines of credit
Recorded investment in loans
Total	1,923		1,923		6,671
Commercial lines of credit | Private banking
Recorded investment in loans
Total	118		118		2,409
Commercial lines of credit | C&I lending
Recorded investment in loans
Total	1,805		1,805		4,262
Commercial lines of credit | Pass | Private banking
Recorded investment in loans
Total	118		118		124
Commercial lines of credit | Pass | C&I lending
Recorded investment in loans
Total	1,783		1,783		3,573
Commercial lines of credit | Special Mention | Private banking
Recorded investment in loans
Total					2,285
Commercial lines of credit | Special Mention | C&I lending
Recorded investment in loans
Total	22		22
Commercial lines of credit | Substandard | C&I lending
Recorded investment in loans
Total					689
Other consumer
Recorded investment in loans
Total	6		6		7
Other consumer | Pass
Recorded investment in loans
Total	$ 6		$ 6		$ 7

Mortgage Servicing Rights, ne_2

Mortgage Servicing Rights, net - Principle Balance by Category (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Mortgage Servicing Rights
Total	$ 336,943	$ 666,030
Custodial escrow balances maintained on serviced loans	5,073	6,051
FNMA
Mortgage Servicing Rights
Total	132,829	171,553
FHLB
Mortgage Servicing Rights
Total	44,179	64,661
Private investors
Mortgage Servicing Rights
Total	$ 159,935	$ 429,816

Mortgage Servicing Rights net -

Mortgage Servicing Rights net - Activity and Related Valuation Allowance (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
Mortgage servicing rights activity
Mortgage servicing rights Beginning of year	$ 4,200	$ 9,569	$ 7,853	$ 10,845
Additions	25	119	124	609
Amortization	(550)	(1,123)	(4,302)	(2,889)
Mortgage servicing rights End of year	3,675	8,565	3,675	8,565
Valuation allowance at beginning of year	968	2,303	2,165	1,080
Additions (recoveries)	(166)	(161)	(1,363)	1,062
Valuation allowance at end of year	802	2,142	802	2,142
Mortgage servicing rights, net	2,873	6,423	2,873	6,423	$ 5,688
Servicing fee income (loss), net of amortization of servicing rights and changes in valuation allowance	$ (31)	$ (121)	$ (1,369)	$ (1,239)

Mortgage Servicing Rights, ne_3

Mortgage Servicing Rights, net - Valuation techniques (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Mortgage Servicing Rights
Fair value of mortgage servicing rights	$ 3,338	$ 5,841
Prepayment speed range	18.50%	22.50%
Weighted average life of the mortgage servicing right	50 months	43 months
Weighted average default rate	0.20%	0.20%
Minimum
Mortgage Servicing Rights
Discount rate range	9.50%	9.50%
Maximum
Mortgage Servicing Rights
Discount rate range	12.00%	12.00%

Deposits - Time deposits (Detai

Deposits - Time deposits (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Deposits
Interest-bearing time deposits	$ 961,691	$ 1,646,523
Brokered time deposits	20,000	42,751
Time deposits that meet or exceed the FDIC insurance limit of $250	$ 267,582	$ 487,340

FHLB Borrowings (Details)

FHLB Borrowings (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Federal Home Loan Bank Borrowings
Long-term fixed rate advances	$ 307,000	$ 318,000
Minimum | Long term
Federal Home Loan Bank Borrowings
FHLB interest rates (as a percent)	0.43%	0.43%
Maximum | Long term
Federal Home Loan Bank Borrowings
FHLB interest rates (as a percent)	1.96%	1.96%

FHLB Borrowings - FHLB Advances

FHLB Borrowings - FHLB Advances (Details) $ in Thousands	Sep. 30, 2021USD ($)
Federal Home Loan Bank Borrowings
Additional borrowing capacity	$ 31,074
Callable Option
Federal Home Loan Bank Borrowings
Total FHLB advances	240,000
Callable Option October, 2021
Federal Home Loan Bank Borrowings
Total FHLB advances	90,000
Callable Option November, 2021
Federal Home Loan Bank Borrowings
Total FHLB advances	100,000
Callable Option May, 2024
Federal Home Loan Bank Borrowings
Total FHLB advances	$ 50,000

FHLB Borrowings - FHLB Overdraf

FHLB Borrowings - FHLB Overdraft Line of Credit and Letters of Credit (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
FHLB Overdraft Line of Credit and Letters of Credit
FHLB line of credit agreement maximum borrowing limit	$ 50,000
FHLB overdraft line of credit average borrowings outstanding	9	$ 24
FHLB overdraft line of credit outstanding borrowings	0		$ 0
FHLB overdraft line of credit	$ 20
FHLB overdraft line of credit (as percent)	0.43%		0.46%
FHLB, agreement term	1 year
Standby letter of credit 1 expiring July, 2022
FHLB Overdraft Line of Credit and Letters of Credit
FHLB overdraft line of credit outstanding borrowings	$ 0
FHLB letter of credit	$ 11,500
FHLB letter of credit term	16 months
Standby letter of credit 2 expiring July, 2022
FHLB Overdraft Line of Credit and Letters of Credit
FHLB letter of credit	$ 7,500
Standby letters of credit expiring July 2024
FHLB Overdraft Line of Credit and Letters of Credit
FHLB letter of credit	$ 4,000
FHLB letter of credit term	36 months

FHLB Borrowings - Other Borrowi

FHLB Borrowings - Other Borrowings (Details) - Other Banks - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020
Other Borrowings
Maximum borrowing capacity	$ 80,000	$ 100,000
Outstanding balance	$ 0		$ 0

Subordinated Notes, net (Detail

Subordinated Notes, net (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Apr. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Subordinated Notes
Total		$ 65,360		$ 65,360		$ 65,341
Interest expense		972	$ 1,178	3,157	$ 3,533
Subordinated notes
Subordinated Notes
Subordinated notes (principal amount)		65,000		65,000		65,000
Unamortized note premium		360		360		411
Unamortized debt issuance costs		0		0		(70)
Total		65,360		$ 65,360		$ 65,341
Interest rate (as a percent)	7.00%			5.95%		7.00%
Interest expense		$ 972	$ 1,178	$ 3,157	$ 3,533
Redemption price percentage of outstanding principal amount				100.00%
LIBOR | Subordinated notes
Subordinated Notes
Variable interest rate on subordinate notes (in percent)	5.82%

Shareholders' Equity (Details)

Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	May 31, 2021	Jun. 30, 2021	Mar. 31, 2020	Sep. 30, 2021	Dec. 31, 2018
Stock Repurchase Program
Shares repurchased and cancelled, value			$ 82
Proceeds from Issuance of Common Stock				$ 1,350
Common stock
Stock Repurchase Program
Shares repurchased and canceled			10,912	10,912
Shares repurchased and cancelled, value			$ 82	$ 82
Average repurchase price (in dollars per share)				$ 7.57
Common stock authorized repurchase amount remaining				$ 19,568
Number of shares of stock issued and sold		300,000
Chief Executive Officer | Common stock
Stock Repurchase Program
Number of shares of stock issued and sold	300,000
Proceeds from Issuance of Common Stock	$ 1,350
Offering price (in dollars per share)	$ 4.50
Maximum | Common stock
Stock Repurchase Program
Stock repurchase program authorized amount					$ 50,000

Stock-based Compensation (Detai

Stock-based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Stock options
Stock-based Compensation
Maximum term of stock awards granted			10 years
2017 Omnibus Equity Incentive Plan
Stock-based Compensation
Number of shares authorized	4,237,100		4,237,100
Weighted Average Remaining Contractual Term
Shares withheld in order to pay employee tax liabilities on vested awards			8,536
Employee tax liability associated with restricted stock awards the vested during the period			$ 46
2017 Omnibus Equity Incentive Plan | Stock options
Stock-based Compensation
Percentage of awards vesting			50.00%
Number of Shares
Outstanding at January 1, 2021			377,882
Forfeited/expired			(10,115)
Outstanding at March 31, 2021	367,767		367,767		377,882
Exercisable at March 31, 2021	226,550		226,550
Weighted Average Exercise Price
Outstanding at January 1, 2021			$ 5.61
Forfeited/expired			12.62
Outstanding at March 31, 2021	$ 5.41		5.41		$ 5.61
Exercisable at March 31, 2021ble at March 31, 2021	$ 4.98		$ 4.98
Weighted Average Remaining Contractual Term
Weighted Average Remaining Contractual Term (Years)			8 years 4 months 20 days		9 years 1 month 2 days
Weighted Average Remaining Contractual Term, Exercisable			8 years 5 months 19 days
Aggregate Intrinsic Value Exercisable	$ 232		$ 232
Aggregate Intrinsic Value	348		348
Stock-based compensation costs recognized	34	$ 57	137	$ 112
Total unrecognized compensation cost - stock options	66		$ 66
Unrecognized compensation cost related to nonvested awards, expected to be recognized over a weighted-average period			9 months
2017 Omnibus Equity Incentive Plan | Stock Options granted prior to 2020 | Awards vesting at the end of the third year
Stock-based Compensation
Percentage of awards vesting			50.00%
2017 Omnibus Equity Incentive Plan | Stock Options granted prior to 2020 | Awards vesting at the end of the fourth year
Stock-based Compensation
Percentage of awards vesting			50.00%
2017 Omnibus Equity Incentive Plan | Stock Options granted starting in 2020
Stock-based Compensation
Vesting period			3 years
2017 Omnibus Equity Incentive Plan | Stock Options granted starting in 2020 | Awards vesting on the first anniversary of the grant date
Stock-based Compensation
Percentage of awards vesting			33.33%
2017 Omnibus Equity Incentive Plan | Stock Options granted starting in 2020 | Awards vesting at the end of the second year
Stock-based Compensation
Percentage of awards vesting			33.33%
2017 Omnibus Equity Incentive Plan | Stock Options granted starting in 2020 | Awards vesting at the end of the third year
Stock-based Compensation
Percentage of awards vesting			33.33%
2017 Omnibus Equity Incentive Plan | Restricted Stock
Weighted Average Remaining Contractual Term
Stock-based compensation costs recognized	162	$ 1	$ 357	$ 64
Total unrecognized compensation cost - restricted stock awards	$ 1,302		$ 1,302
Unrecognized compensation cost related to nonvested awards, expected to be recognized over a weighted-average period			2 years 2 months 8 days
Number of Shares
Nonvested, Opening balance			137,936
Granted			234,996
Vested			(31,906)
Forfeited			(33,257)
Nonvested, Ending balance	307,769		307,769		137,936
Weighted Average Grant Date Fair Value
Nonvested, Opening balance			$ 7.90
Granted			4.97
Vested			7.67
Forfeited			6.12
Nonvested, Ending balance	$ 5.87		$ 5.87		$ 7.90
Grant Date Fair Value of Restricted Stock that Vested During the year
Fair value of restricted stock awards vested			$ 173
2020 Omnibus Equity Incentive Plan
Stock-based Compensation
Number of shares authorized	3,979,661		3,979,661
2020 Omnibus Equity Incentive Plan | Restricted Stock
Stock-based Compensation
Vesting period			3 years
2020 Omnibus Equity Incentive Plan | Restricted Stock | Awards vesting on the first anniversary of the grant date
Stock-based Compensation
Percentage of awards vesting			33.33%
2020 Omnibus Equity Incentive Plan | Restricted Stock | Awards vesting at the end of the second year
Stock-based Compensation
Percentage of awards vesting			33.33%
2020 Omnibus Equity Incentive Plan | Restricted Stock | Awards vesting at the end of the third year
Stock-based Compensation
Percentage of awards vesting			33.33%
2020 Omnibus Equity Incentive Plan | Restricted Stock | Key employee
Number of Shares
Granted			189,996
2020 Omnibus Equity Incentive Plan | Restricted Stock | Non-employee directors Restricted Stock Awards
Number of Shares
Granted			45,000

Income (Loss) Per Share (Detail

Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Numerator:
Net loss	$ 9,557	$ 3,452	$ 2,325	$ (111)	$ 2,867	$ (4,030)	$ 15,334	$ (1,274)
Denominator:
Weighted average common shares outstanding, basic	50,167,295			49,843,925			50,010,341	49,839,860
Weighted average effect of potentially dilutive common shares:
Weighted average common shares outstanding, diluted	50,262,686			49,843,925			50,079,931	49,839,860
Income (loss) per share:
Income (loss) per share, diluted	$ 0.19			$ 0			$ 0.31	$ (0.03)
Securities excluded from the computation of weighted average diluted shares outstanding as inclusion of such items would be anti-dilutive	75,061			531,104			174,697	530,034
Income (loss) per share, basic and diluted	$ 0.19			$ 0			$ 0.31	$ (0.03)
Stock options
Income (loss) per share:
Securities excluded from the computation of weighted average diluted shares outstanding as inclusion of such items would be anti-dilutive	67,767			397,820			70,139	353,018
Restricted Stock
Income (loss) per share:
Securities excluded from the computation of weighted average diluted shares outstanding as inclusion of such items would be anti-dilutive	7,294			133,284			104,558	177,016
Common stock | Stock options
Weighted average effect of potentially dilutive common shares:
Incremental shares from share-based compensation	55,131						48,659
Common stock | Restricted Stock
Weighted average effect of potentially dilutive common shares:
Incremental shares from share-based compensation	40,260						20,931

Fair Values of Financial Inst_3

Fair Values of Financial Instruments - Assets measured at fair value on a recurring basis (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Available for sale debt securities:
Available for sale debt securities, at fair value	$ 199,424	$ 299,594
Equity securities
Equity securities	5,019	5,118
U.S. Treasury & Agency securities
Available for sale debt securities:
Available for sale debt securities, at fair value	73,506	138,997
U.S. Treasury & Agency securities | Recurring
Available for sale debt securities:
Available for sale debt securities, at fair value	73,506	138,997
U.S. Treasury & Agency securities | Level 1 | Recurring
Available for sale debt securities:
Available for sale debt securities, at fair value		40,192
U.S. Treasury & Agency securities | Level 2 | Recurring
Available for sale debt securities:
Available for sale debt securities, at fair value	73,506	98,805
Mortgage-backed securities
Available for sale debt securities:
Available for sale debt securities, at fair value	26,576	33,814
Mortgage-backed securities | Recurring
Available for sale debt securities:
Available for sale debt securities, at fair value	26,576	33,814
Mortgage-backed securities | Level 2 | Recurring
Available for sale debt securities:
Available for sale debt securities, at fair value	26,576	33,814
Collateralized mortgage obligations
Available for sale debt securities:
Available for sale debt securities, at fair value	99,151	126,596
Collateralized mortgage obligations | Recurring
Available for sale debt securities:
Available for sale debt securities, at fair value	99,151	126,596
Collateralized mortgage obligations | Level 2 | Recurring
Available for sale debt securities:
Available for sale debt securities, at fair value	99,151	126,596
Collateralized debt obligations
Available for sale debt securities:
Available for sale debt securities, at fair value	191	187
Collateralized debt obligations | Recurring
Available for sale debt securities:
Available for sale debt securities, at fair value	191	187
Collateralized debt obligations | Level 3 | Recurring
Available for sale debt securities:
Available for sale debt securities, at fair value	191	187
Equity securities | Recurring
Equity securities
Equity securities	5,019	5,118
Equity securities | Level 1 | Recurring
Equity securities
Equity securities	$ 5,019	$ 5,118

Fair Values of Financial Inst_4

Fair Values of Financial Instruments - Reconciliation and income statement classification using Level 3 inputs (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Investment income
Unrealized losses on investments	$ 377		$ 419
Collateralized debt obligations
Investment income
Unrealized losses on investments	20		27
Collateralized debt obligations | Recurring | Level 3
Reconciliation and income statement classification of gains and losses for all assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3)
Balance of recurring Level 3 assets at beginning of period	187	$ 199	199
Included in other comprehensive income (loss)	7	(13)
Principal maturities/settlements	(3)	(2)
Balance of recurring Level 3 assets at end of period	191	184	187
Investment income
Unrealized losses on investments	20		$ 27
Interest income	$ 4	$ 5

Fair Values of Financial Inst_5

Fair Values of Financial Instruments - Assets Measured at Fair Value on a Non Recurring Basis and Fair Value of Financial Instruments (Details) $ in Thousands	Sep. 30, 2021USD ($)	Dec. 31, 2020USD ($)
Financial Assets
Interest-bearing time deposits with other banks	$ 805	$ 7,021
Nonrecurring | Impaired loans, Residential real estate
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis	43
Nonrecurring | Impaired loans, Residential real estate | Level 3
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis	43
Nonrecurring | Impaired loans, Residential real estate | Level 3 | Sales comparison approach
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis	$ 43
Nonrecurring | Impaired loans, Residential real estate | Weighted Average | Level 3 | Sales comparison approach | Adjustments for differences between the comparable sales
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input	0.15
Nonrecurring | Impaired loans, Commercial real estate
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis		8,240
Nonrecurring | Impaired loans, Commercial real estate | Level 3
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis		8,240
Nonrecurring | Impaired loans, Commercial real estate | Level 3 | Sales comparison approach/Income capitalization approach
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis		$ 8,240
Nonrecurring | Impaired loans, Commercial real estate | Weighted Average | Level 3 | Sales comparison approach/Income capitalization approach | Adjustments for differences between the comparable sales and income data for similar loans and collateral underlying such loans
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input		0.36
Nonrecurring | Impaired loans, Construction
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis		$ 5,015
Nonrecurring | Impaired loans, Construction | Level 3
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis		5,015
Nonrecurring | Impaired loans, Construction | Level 3 | Hybrid of sales comparison and income capitalization approaches
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis		$ 5,015
Nonrecurring | Impaired loans, Construction | Weighted Average | Level 3 | Hybrid of sales comparison and income capitalization approaches | Adjustments for differences between the comparable sales and income data for similar loans and collateral underlying such loans
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input		0.15
Nonrecurring | Mortgage loans held for sale
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis		$ 19,375
Nonrecurring | Mortgage loans held for sale | Level 2
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis		19,375
Nonrecurring | Mortgage servicing rights
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis	$ 2,021	5,175
Nonrecurring | Mortgage servicing rights | Level 3
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis	2,021	5,175
Nonrecurring | Mortgage servicing rights | Level 3 | Discounted cash flow
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis	$ 2,021	$ 5,175
Nonrecurring | Mortgage servicing rights | Maximum | Level 3 | Discounted cash flow | Discount rate
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input	0.120	0.120
Nonrecurring | Mortgage servicing rights | Maximum | Level 3 | Discounted cash flow | Prepayment speed
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input	0.377	0.370
Nonrecurring | Mortgage servicing rights | Maximum | Level 3 | Discounted cash flow | Default rate
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input	0.026	0.002
Nonrecurring | Mortgage servicing rights | Minimum | Level 3 | Discounted cash flow | Discount rate
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input	0.095	0.095
Nonrecurring | Mortgage servicing rights | Minimum | Level 3 | Discounted cash flow | Prepayment speed
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input	0.111	0.105
Nonrecurring | Mortgage servicing rights | Minimum | Level 3 | Discounted cash flow | Default rate
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input	0.001	0.001
Nonrecurring | Mortgage servicing rights | Weighted Average | Level 3 | Discounted cash flow | Discount rate
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input	(0.113)	0.116
Nonrecurring | Mortgage servicing rights | Weighted Average | Level 3 | Discounted cash flow | Prepayment speed
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input	(0.212)	0.237
Nonrecurring | Mortgage servicing rights | Weighted Average | Level 3 | Discounted cash flow | Default rate
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input	(0.003)	0.002
Carrying value per balance sheet
Financial Assets
Cash and due from banks	$ 609,412	$ 998,497
Interest-bearing time deposits with other banks	805	7,021
Mortgage loans held for sale	12,744	2,909
Loans, net	2,168,501	2,434,356
Financial Liabilities
Federal Home Loan Bank borrowings	307,000	318,000
Subordinated notes, net	65,360	65,341
Time deposits	961,691	1,646,523
Estimated fair value
Financial Assets
Cash and due from banks	609,412	998,497
Interest-bearing time deposits with other banks	805	7,021
Mortgage loans held for sale	13,266	3,052
Loans, net	2,288,221	2,521,874
Financial Liabilities
Federal Home Loan Bank borrowings	309,868	328,150
Subordinated notes, net	65,066	65,753
Time deposits	964,943	1,658,020
Estimated fair value | Level 1
Financial Assets
Cash and due from banks	609,412	998,497
Interest-bearing time deposits with other banks		7,021
Estimated fair value | Level 2
Financial Assets
Interest-bearing time deposits with other banks	805
Mortgage loans held for sale	13,266	3,052
Financial Liabilities
Federal Home Loan Bank borrowings	309,868	328,150
Subordinated notes, net	65,066	65,753
Time deposits	964,943	1,658,020
Estimated fair value | Level 3
Financial Assets
Loans, net	$ 2,288,221	$ 2,521,874

Regulatory Capital Requiremen_3

Regulatory Capital Requirements - Actual and minimum required capital amounts and ratios and Dividend Restrictions (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2021USD ($)	Dec. 31, 2020USD ($)
Regulatory Capital Requirements
Capital conservation buffer (as a percent)	2.50%
Required Total capital adequacy with capital conservation buffer	0.105
Required Tier 1 capital adequacy with capital conservation buffer	0.085
Required Common Equity capital adequacy with capital conservation buffer	0.070
Total adjusted capital to risk-weighted assets, Amount
Actual	$ 407,769	$ 407,733
For Capital Adequacy Purposes	$ 123,564	$ 144,466
Total adjusted capital to risk-weighted assets, Ratio
Actual	0.2640	0.2258
For Capital Adequacy Purposes	0.0800	0.0800
Tier 1 (core) capital to risk-weighted assets, Amount
Actual	$ 335,833	$ 319,204
For Capital Adequacy Purposes	$ 92,673	$ 108,350
Tier 1 (core) capital to risk-weighted assets, Ratio
Actual	0.2174	0.1768
For Capital Adequacy Purposes	0.0600	0.0600
Common Equity Tier 1 (CET1), Amount
Actual	$ 335,833	$ 319,204
For Capital Adequacy Purposes	$ 69,505	$ 81,262
Common Equity Tier 1 (CET1), Ratio
Actual	0.2174	0.1768
For Capital Adequacy Purposes	0.0450	0.0450
Tier 1 (core) capital to adjusted tangible assets, Amount
Actual	$ 335,833	$ 319,204
For Capital Adequacy Purposes	$ 130,158	$ 158,067
Tier 1 (core) capital to adjusted tangible assets, Ratio
Actual	0.1032	0.0808
For Capital Adequacy Purposes	0.0400	0.0400
Dividend Restrictions
Minimum percentage of assets be maintained as per Qualified Thrift Lender ("QTL") test	65.00%
Bank
Total adjusted capital to risk-weighted assets, Amount
Actual	$ 403,753	$ 386,237
For Capital Adequacy Purposes	122,508	143,339
To be Well Capitalized	$ 153,135	$ 179,174
Total adjusted capital to risk-weighted assets, Ratio
Actual	0.2637	0.2156
For Capital Adequacy Purposes	0.0800	0.0800
To be Well Capitalized	0.1000	0.1000
Tier 1 (core) capital to risk-weighted assets, Amount
Actual	$ 383,980	$ 363,224
For Capital Adequacy Purposes	91,881	107,504
To be Well Capitalized	$ 122,508	$ 143,339
Tier 1 (core) capital to risk-weighted assets, Ratio
Actual	0.2507	0.2027
For Capital Adequacy Purposes	0.0600	0.0600
To be Well Capitalized	0.0800	0.0800
Common Equity Tier 1 (CET1), Amount
Actual	$ 383,980	$ 363,224
For Capital Adequacy Purposes	68,911	80,628
To be Well Capitalized	$ 99,538	$ 116,463
Common Equity Tier 1 (CET1), Ratio
Actual	0.2507	0.2027
For Capital Adequacy Purposes	0.0450	0.0450
To be Well Capitalized	0.0650	0.0650
Tier 1 (core) capital to adjusted tangible assets, Amount
Actual	$ 383,980	$ 363,224
For Capital Adequacy Purposes	129,606	157,954
To be Well Capitalized	$ 162,008	$ 197,442
Tier 1 (core) capital to adjusted tangible assets, Ratio
Actual	0.1185	0.0920
For Capital Adequacy Purposes	0.0400	0.0400
To be Well Capitalized	0.0500	0.0500

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Board of Directors | Charitable donation to foundation
Related party transactions
Amount of related party transaction, expense				$ 375
Controlling Shareholders
Related party transactions
Payments under leases		$ 57		177
Sublease income	$ 97	69	$ 289	207
Controlling Shareholders | Data processing and programming services provided
Related party transactions
Amount of related party transaction, revenue		$ 10		$ 60

Commitments and Contingencies -

Commitments and Contingencies - Unfunded Commitments to Extend Credit and Standby Letters of Credit (Details) $ in Thousands	Jul. 28, 2020item	Sep. 30, 2021USD ($)	Dec. 31, 2020USD ($)
Loss contingency from legal proceedings
Commitments and Contingencies
Liability for contingent losses		$ 27,500
Loss contingency from class action lawsuit
Commitments and Contingencies
Full amount of the settlement covered by the Company's applicable insurance policies		12,500
Liability for contingent losses		12,500	$ 12,500
Demand letter from purported stockholders
Commitments and Contingencies
Number of law firms | item	2
Threshold period for responding to Demand letter	90 days
Unfunded Commitments to Extend Credit | Residential real estate
Commitments and Contingencies
Outstanding commitments regarding fixed rate loans		4,958
Outstanding commitments with varying interest rates		$ 29,794
Unfunded Commitments to Extend Credit | Residential real estate | Minimum
Commitments and Contingencies
Fixed interest rate (as a percent)		2.75%
Maturity period		15 years
Variable interest rate (as a percentage)		2.875%
Unfunded Commitments to Extend Credit | Residential real estate | Maximum
Commitments and Contingencies
Fixed interest rate (as a percent)		3.625%
Maturity period		30 years
Variable interest rate (as a percentage)		3.875%
Maturity period for variable interest loans		30 years
Unfunded Commitments to Extend Credit | Residential real estate | Maximum | Demand letter from purported stockholders
Commitments and Contingencies
Maturity period		90 days
Commitments to make loans
Commitments and Contingencies
Commitments to make loans		$ 34,752	40,331
Unused lines of credit
Commitments and Contingencies
Unused lines of credit		$ 58,043	140,665
Unused lines of credit | Minimum
Commitments and Contingencies
Variable interest rate (as a percentage)		3.25%
Maturity period for variable interest loans		1 month
Unused lines of credit | Maximum
Commitments and Contingencies
Variable interest rate (as a percentage)		7.00%
Maturity period for variable interest loans		24 years
Unused lines of credit | Residential real estate
Commitments and Contingencies
Unused lines of credit		$ 12,294
Unused lines of credit | Construction
Commitments and Contingencies
Unused lines of credit		45,749
Standby letters of credit
Commitments and Contingencies
Unused lines of credit		$ 24	$ 24

Commitments and Contingencies_2

Commitments and Contingencies - Advantage Loan Program Loans Sold (Details) - USD ($) $ in Thousands	1 Months Ended			3 Months Ended			9 Months Ended
	Jul. 31, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Commitments and Contingencies
Unpaid principal balance				$ 2,168,544			$ 2,168,544		$ 2,434,356
Advantage Loan Program
Commitments and Contingencies
Mortgage loan repurchase liability				3,225		$ 7,197	3,225	$ 7,197	9,699	$ 7,823
Unpaid principal balance				$ 159,935			$ 159,935		429,816
Percentage of loans offered to each of investors to repurchase				100.00%			100.00%
Outstanding principal balance of loans repurchased				$ 6,067		$ 30,934	$ 173,829	$ 69,638
Disposition of mortgage servicing rights			$ 1,255
Advantage Loan Program loans repurchased
Commitments and Contingencies
Outstanding principal balance of loans repurchased	$ 6,067	$ 79,818	$ 87,944
Disposition of mortgage servicing rights	72	1,054
Loss charged against mortgage repurchase liability	$ 769	$ (1,825)			$ 2,917
Residential real estate
Commitments and Contingencies
Mortgage loan repurchase liability				3,225			3,225		9,699
Unpaid principal balance				$ 261,607			$ 261,607		$ 562,139

Commitments and Contingencies_3

Commitments and Contingencies - Mortgage Repurchase Liability (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2020
Mortgage repurchase liability:
Net provision (recovery)	$ (298)	$ (963)	$ 25
Advantage Loan Program
Mortgage repurchase liability:
Balance, beginning of period		9,699	7,823
Net provision (recovery)		(963)	25
Loss on loan repurchases		5,511	651
Balance, end of the period	$ 3,225	$ 3,225	$ 7,197

Commitments and Contingencies_4

Commitments and Contingencies - Additional pool of ALPL with specific time ranges (Details) $ in Thousands	Sep. 30, 2021USD ($)
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Outstanding Principal Balance	$ 83,677
February 28, 2022 - February 28, 2023
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Outstanding Principal Balance	15,609
May 21, 2022 - May 21, 2023
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Outstanding Principal Balance	15,565
July 25, 2022 - July 25, 2023
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Outstanding Principal Balance	19,276
Present - July 22, 2023
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Outstanding Principal Balance	$ 33,227