Loans (Narrative) (Details) - USD ($)	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale	$ 504,000		$ 1,370,000
Residential Real Estate Mortgages Serviced For Others	268,700,000		269,400,000
Accrued interest receivable	24,914,000		24,481,000
Interest income on nonaccrual loans	0	$ 0
Estimated interest income	132,000	$ 122,000
Other Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrued interest receivable	22,000,000		21,800,000
Residential Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale	504,000		1,400,000
Consumer Overdrafts [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due greater than 90 days and still accruing interest	$ 36,000		$ 21,000

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Amount of interest income on financing receivable on nonaccrual status.

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