Investment Securities (Narrative) (Details) $ in Thousands	9 Months Ended
Sep. 30, 2023 USD ($) security	Dec. 31, 2022 USD ($)
Debt Securities, Available-for-sale [Line Items]
Number of individual available-for-sale securities with unrealized losses \| security	234
Unrealized Losses	$ 39,550	$ 35,857
Aggregate percentage of depreciation	16.93%
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest	$ 0
Proceeds from the sale of available for sale securities and calls	0
Gains on sales of investment securities	0
Losses on sales of investment securities	0
Federal Home Loan Bank Advances [Member]
Debt Securities, Available-for-sale [Line Items]
Available for sale securities pledged to secure Federal Home Loan Bank of New York ("FHLBNY") borrowings	13,151	15,407
Asset Pledged as Collateral [Member] \| Federal Reserve Bank Advances [Member]
Debt Securities, Available-for-sale [Line Items]
Available for sale securities pledged to secure Federal Home Loan Bank of New York ("FHLBNY") borrowings	$ 79,074	$ 958

Represents the Aggregate percentage of depreciation.

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