Loans - Aging Analysis of Loan Modifications (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	$ 14,036	$ 14,555
Current
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	13,865	14,319
30-89 Days Past Due
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	0	65
90 Days or More Past Due
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	0	0
Total Past Due
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	171	171
Commercial mortgage
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	171	236
Commercial mortgage | Current
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	0	0
Commercial mortgage | 30-89 Days Past Due
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	0	65
Commercial mortgage | 90 Days or More Past Due
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	0	0
Commercial mortgage | Total Past Due
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	171	171
Commercial and industrial
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	13,865	14,319
Commercial and industrial | Current
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	13,865	14,319
Commercial and industrial | 30-89 Days Past Due
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	0	0
Commercial and industrial | 90 Days or More Past Due
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	0	0
Commercial and industrial | Total Past Due
Financing Receivable, Modified [Line Items]
Financing receivable, excluding accrued interest, modified in period, amount	$ 0	$ 0