Nature of Business and Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands		3 Months Ended								12 Months Ended
	Jul. 10, 2020 BranchOffice MortgageOffice	Dec. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2021 USD ($) Segment BranchLease	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2022 USD ($)
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Percentage of employee discretionary matching, profit sharing and safe harbor contributions, maximum										4.00%
Number of branch banking offices | BranchOffice	13
Number of branch mortgage loan offices | MortgageOffice	5
Provision for loan losses (Note 5) | $		$ 873	$ 572	$ 586	$ 686	$ 406	$ 620	$ 271	$ 1,146	$ 2,717	$ 2,443	$ 258
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%
Number of business segment | Segment										2
Number of leased branches | BranchLease										13
Scenario Forecast
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Right of use asset | $													$ 35,300
Operating lease liability | $													$ 35,500
Construction Loans
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Provision for loan losses (Note 5) | $										$ 204	38	151
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) | $										$ (32)	$ (95)	$ 608
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) | $										$ 2,700
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									Jul. 10, 2020
Business Acquisition, Name of Acquired Entity	Mortgage World									Mortgage World
Bronx
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Number of branch banking offices | BranchOffice	4
Manhattan
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Number of branch banking offices | BranchOffice	2
Queens
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Number of branch banking offices | BranchOffice	3
Number of branch mortgage loan offices | MortgageOffice	2
Brooklyn
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Number of branch banking offices | BranchOffice	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 | BranchOffice	1
New York and Englewood Cliffs
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Number of branch mortgage loan offices | MortgageOffice	1
Bergenfield
Nature Of Business And Summary Of Significant Accounting Policies Table Of Statement [Line Items]
Number of branch mortgage loan offices | MortgageOffice	1