Loans And Leases - Additional Information (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Jan. 01, 2023	Dec. 31, 2022
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Loans and Leases Receivable, Related Parties, Ending Balance	$ 1,400,000	$ 1,400,000
Loans and Leases Receivable, Related Parties, Additions	0	1,300,000
Loans and Leases Receivable, Related Parties, Proceeds	0	0
Decrease to retained earnings	92,326,000	90,593,000	$ 84,757,000		$ 85,135,000
Minimum commitment required for evaluating idividually	500,000
Commitment required for evaluating individually at management discretion	500,000
Loans and leases, allowance for credit losses	10,436,000	10,507,000	11,599,000		9,422,000
Retained Earnings [Member]
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Decrease to retained earnings	111,777,000	109,959,000	104,427,000		$ 104,460,000
Impact of Adopting CECL [Member]
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Transition adjustment increase in allowance for credit losses				$ 2,400,000
Decrease to retained earnings			(1,811,000)
Loans and leases, allowance for credit losses			2,123,000
Impact of Adopting CECL [Member] | Retained Earnings [Member]
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Decrease to retained earnings			$ (1,811,000)	$ (1,800,000)
Reserve for Unfunded Commitments [Member]
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Loans and leases, allowance for credit losses	$ 500,000	$ 600,000
Real Estate [Member]
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Percentage of Loan Portfolio	54.80%	53.60%
Pledged as Collateral [Member] | FHLB Borrowings [Member]
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Loans pledged as collateral	$ 97,300,000	$ 98,600,000
Pledged as Collateral [Member] | Federal Reserve Bank Advances [Member]
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Loans pledged as collateral	$ 288,400,000	$ 294,400,000