Investment Securities (Narrative) (Details) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2024 USD ($) security	Dec. 31, 2023 USD ($)
Debt Securities, Available-for-Sale [Line Items]
Number of individual available-for-sale securities with unrealized losses \| security	188
Unrealized Losses	$ 14,614	$ 33,010
Aggregate percentage of depreciation	8.40%
Allowance for credit losses for available-for-sale securities	$ 0
Proceeds from the sale of available for sale securities and calls	58,564
Losses on sales of investment securities	11,996
Gains on sales of investment securities	0
Available for sale securities on non-accrual status	0	0
Accrued interest related to securities reversed	0	0
Accrued interest receivable on available for sale securities	$ 652	$ 602
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Interest Receivable	Interest Receivable
Federal Home Loan Bank Advances
Debt Securities, Available-for-Sale [Line Items]
Available for sale securities pledged to secure Federal Home Loan Bank of New York ("FHLBNY") borrowings	$ 86,452	$ 13,130
Asset Pledged as Collateral \| Federal Reserve Bank Advances
Debt Securities, Available-for-Sale [Line Items]
Available for sale securities pledged to secure Federal Home Loan Bank of New York ("FHLBNY") borrowings	$ 954	$ 75,769

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