Loans and the Allowance for Loan Losses - Narrative (Details) - USD ($)	Sep. 30, 2024	Dec. 31, 2023
Receivables [Abstract]
Financing receivable, unamortized loan cost (fee)	$ 12,800,000	$ 12,600,000
Loans and leases receivable reclassified from overdraft	6,100,000	2,200,000
Loan, securitized or asset-backed financing arrangement, principal outstanding	743,300,000	723,500,000
Servicing asset	954,000	1,100,000
Recorded Investment Over 90 Days Past Due and Still Accruing	185,000	127,000
Financing receivable, excluding accrued interest, nonaccrual	25,874,000	16,943,000
Financing receivable accrued interest receivable, loans deferrals	4,000,000.0	4,200,000
Financing receivable, accrued interest, after allowance for credit loss	$ 28,800,000	$ 25,200,000