Allowance for Credit Losses - Schedule amortized cost of collateral dependent loans (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Financing Receivable, Past Due [Line Items]
Amortized cost	$ 19,590	$ 20,981
Commercial And Industrial [Member]
Financing Receivable, Past Due [Line Items]
Amortized cost	7,681	7,788
Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Amortized cost	9,518	11,814
Residential 1-4 Family First Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Amortized cost	1,733	699
Home Equity Loans And Lines of Credit [Member]
Financing Receivable, Past Due [Line Items]
Amortized cost	591	599
Consumer Loans [Member]
Financing Receivable, Past Due [Line Items]
Amortized cost	$ 67	$ 81