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FHLB Advances, Other Borrowings and Subordinated Notes and Debentures (Composition of Borrowed Funds) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Composition of Borrowed Funds
Borrowed funds	$ 381,718,000	$ 330,916,000
Borrowed funds, average balance	$ 336,765,000	$ 390,881,000
Borrowed funds, interest rate during period	2.89%	2.79%
Federal funds purchased
Composition of Borrowed Funds
Borrowed funds	$ 0	$ 0
Borrowed funds, average balance	$ 0	$ 3,000
Borrowed funds, interest rate during period	0.00%	5.37%
FHLB advances
Composition of Borrowed Funds
Borrowed funds	$ 332,250,000	$ 281,500,000
Borrowed funds, average balance	$ 287,307,000	$ 351,990,000
Borrowed funds, interest rate during period	2.39%	2.52%
Line of Credit
Composition of Borrowed Funds
Borrowed funds	$ 0	$ 0
Borrowed funds, average balance	$ 0	$ 38,000
Borrowed funds, interest rate during period	0.00%	7.26%
Other borrowings
Composition of Borrowed Funds
Borrowed funds	$ 10,000	$ 20,000
Borrowed funds, average balance	$ 20,000	$ 600,000
Borrowed funds, interest rate during period	0.00%	8.33%
Subordinated notes and debentures
Composition of Borrowed Funds
Borrowed funds	$ 49,458,000	$ 49,396,000
Borrowed funds, average balance	$ 49,438,000	$ 38,250,000
Borrowed funds, interest rate during period	5.78%	5.16%

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-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
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