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Loans - Supplemental Information (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unamortized deferred loan origination costs, net of deferred loan   origination fees, included in the above balances $ 3,721 $ 1,273
Overdrawn deposit accounts, included in the above balances 182 238
Residential real estate loans serviced for Freddie Mac, not included    in the balances above 215,209 190,169
Federal Home Loan Bank Advances    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Pledged loans  under a blanket collateral agreement to secure borrowings from the Federal Home Loan Bank of New York $ 778,902 $ 859,592