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Securities (Narrative) (Details)
Dec. 31, 2023
USD ($)
investment
Dec. 31, 2022
USD ($)
investment
Dec. 31, 2009
USD ($)
Debt Securities, Available-for-sale [Line Items]      
Carrying amount of securities pledged $ 366,576,000 $ 354,123,000  
Allowance for credit losses for available-for-sale securities 0 0  
Accrued interest receivable on available-for-sale securities $ 9,620,000 $ 10,637,000  
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Accrued Interest Payable and Other Liabilities Accrued Interest Payable and Other Liabilities  
Original investment of equity security $ 353,000 $ 353,000  
Other than temporary impairment recognized through earnings $ 0 $ 0  
Equity Securities      
Debt Securities, Available-for-sale [Line Items]      
Number of equity securities held in non-controlling investment banking | investment 1 1  
Original investment of equity security     $ 1,350,000
Other than temporary impairment recognized through earnings     $ 997,000