Loans and Allowance for Credit Losses - Nonaccrual loans by loan class (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual with no allowance for credit loss	$ 1,858
Nonaccrual with an allowance for credit loss	36
Loans past due 90 days or more and still accruing	611
Interest income	1
Construction
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual with no allowance for credit loss	177
Loans past due 90 days or more and still accruing	24
Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual with no allowance for credit loss	1,477
Nonaccrual with an allowance for credit loss	12
Loans past due 90 days or more and still accruing	218
Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans past due 90 days or more and still accruing	369
Commercial
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual with no allowance for credit loss	167
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual with no allowance for credit loss	37
Nonaccrual with an allowance for credit loss	$ 24