Loans Supplemental Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unamortized deferred loan origination costs, net of deferred loan   origination fees, included in the above balances	$ 1,273	$ 5,181
Overdrawn deposit accounts, included in the above balances	238	2,420
Residential real estate loans serviced for Freddie Mac, not included    in the balances above	$ 190,169	139,094
Minimum | Other Consumer | Automobile Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal repayment terms, period	3 years
Minimum | Other Consumer | Credit Card Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal repayment terms, period	1 year
Maximum | Other Consumer | Automobile Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal repayment terms, period	7 years
Maximum | Other Consumer | Credit Card Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal repayment terms, period	5 years
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	$ 859,592	$ 731,240