Financial Transactions with Off-Balance-Sheet Risk and Concentrations of Credit Risk - Schedule of Loan Commitments (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Concentration Risk [Line Items]
Loan commitments	$ 284,942	$ 282,198
Residential real estate
Concentration Risk [Line Items]
Loan commitments	115,998	149,847
Multifamily and commercial
Concentration Risk [Line Items]
Loan commitments	73,948	98,910
Commercial business loans
Concentration Risk [Line Items]
Loan commitments	27,773	16,842
Construction
Concentration Risk [Line Items]
Loan commitments	58,069	13,335
Home equity loans and advances
Concentration Risk [Line Items]
Loan commitments	$ 9,154	$ 3,264

Maximum amount of loss due to credit risk that, based on the gross fair value of the financial instrument, the entity would incur if parties to the financial instruments that make up the concentration failed completely to perform according to the terms of the contracts and the collateral or other security, if any, for the amount due proved to be of no value to the entity.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13537-108611

Name:	us-gaap_ConcentrationRiskCreditRiskFinancialInstrumentMaximumExposure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration