Allowance for Credit Losses - Loans - Amortized cost basis of collateral-dependent loans (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loan	$ 1,039,033	$ 1,038,271
Collateral Pledged [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loan	11,197	9,140
Other commercial real estate (non-owner occupied)
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loan	235,526	240,286
Other commercial real estate (non-owner occupied) | Collateral Pledged [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loan	10,659	8,780
Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loan	178,562	174,670
Residential mortgages | Collateral Pledged [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loan	345	173
Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loan	12
Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loan	755,766	760,826
Commercial Portfolio Segment [Member] | Commercial real estate (owner occupied)
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loan	83,324	89,147
Commercial Portfolio Segment [Member] | Commercial real estate (owner occupied) | Collateral Pledged [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loan	181	187
Commercial Portfolio Segment [Member] | Other commercial real estate (non-owner occupied)
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loan	235,526	240,286
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loan	283,267	277,445
Consumer Portfolio Segment [Member] | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loan	178,562	174,670
Consumer Portfolio Segment [Member] | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loan	$ 104,705	$ 102,775