Nature of Business and Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands		3 Months Ended		9 Months Ended		12 Months Ended
	Jul. 10, 2020 BranchOffice MortgageOffice	Sep. 30, 2022 USD ($) Segment	Sep. 30, 2021 USD ($) Segment	Sep. 30, 2022 USD ($) BranchLease Segment	Sep. 30, 2021 USD ($) Segment	Dec. 31, 2021 USD ($)	Dec. 31, 2022 USD ($)
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Number of branch banking offices	13
Number of branch mortgage loan offices | MortgageOffice	5
Provision for loan losses (Note 5) | $		$ 9,330	$ 572	$ 11,405	$ 1,844	$ 2,717
Minimum collection percentage of securities required to be considered as a maturity				85.00%
Period of historical loss experience to estimate allowance for loan losses				36 months
Percentage of largest amount of tax benefits likely to realize				50.00%
Percentage of employee discretionary matching, profit sharing and safe harbor contributions, maximum				4.00%
Number of business segment | Segment		2	2	2	2
Number of leased branches | BranchLease				17
Scenario Forecast
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Right of use asset | $							$ 35,000
Construction Loans
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Provision for loan losses (Note 5) | $		$ 564	$ 104	$ 802	$ 240	204
Commercial Real Estate Portfolio Segment
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Period on which interest rate is adjusted				5 years
Commercial Portfolio Segment
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Provision for loan losses (Note 5) | $		$ 61	$ (74)	$ (235)	$ 14	$ (32)
Minimum
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Percentage of loan to value ratio				65.00%
Minimum | Construction Loans
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Loan term				6 months
Minimum | Commercial Real Estate Portfolio Segment
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Loan amortization period				15 years
Balloon payments period of loan				10 years
Minimum | Commercial Portfolio Segment
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Loan term				5 years
Maximum
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Percentage of loan to value ratio				90.00%
Maximum | Construction Loans
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Loan term				2 years
Maximum | Commercial Real Estate Portfolio Segment
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Percentage of loan to value ratio				75.00%
Loan amortization period				30 years
Balloon payments period of loan				15 years
Maximum | Commercial Portfolio Segment
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Loan term				7 years
COVID-19
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Provision for loan losses (Note 5) | $				$ 11,400
Mortgage World Bankers Inc
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Business Acquisition, Effective Date of Acquisition	Jul. 10, 2020
Business Acquisition, Name of Acquired Entity	Mortgage World
Bronx
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Number of branch banking offices	4
Manhattan
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Number of branch banking offices	2
Queens
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Number of branch banking offices	4
Number of branch mortgage loan offices | MortgageOffice	3
Brooklyn
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Number of branch banking offices	3
Number of branch mortgage loan offices | MortgageOffice	1
Union City
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Number of branch banking offices	1
New York and Bergenfield
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Number of branch mortgage loan offices | MortgageOffice	1