Loans and Allowance for Credit Losses - Nonaccrual loans by loan class (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2023 USD ($)
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual with no allowance for credit loss	$ 3,326
Nonaccrual with an allowance for credit loss	155
Loans past due 90 days or more and still accruing	1,050
Interest income	2
Construction
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual with no allowance for credit loss	173
Loans past due 90 days or more and still accruing	79
Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual with no allowance for credit loss	2,602
Nonaccrual with an allowance for credit loss	131
Loans past due 90 days or more and still accruing	250
Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual with no allowance for credit loss	368
Loans past due 90 days or more and still accruing	721
Commercial
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual with no allowance for credit loss	156
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual with no allowance for credit loss	27
Nonaccrual with an allowance for credit loss	$ 24