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Loans - Nonaccrual Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021
Schedule of Financing Receivables [Line Items]
Nonaccrual loans	$ 4,812	$ 5,602	$ 6,981
Commercial |    Real estate
Schedule of Financing Receivables [Line Items]
Nonaccrual loans	197	242	1,029
Commercial |    Construction
Schedule of Financing Receivables [Line Items]
Nonaccrual loans	25	27	105
Commercial |    Other
Schedule of Financing Receivables [Line Items]
Nonaccrual loans	953	1,068	1,452
Municipal
Schedule of Financing Receivables [Line Items]
Nonaccrual loans	0	0	0
Residential |    Construction
Schedule of Financing Receivables [Line Items]
Nonaccrual loans	0	0	0
Residential |    Term
Schedule of Financing Receivables [Line Items]
Nonaccrual loans	3,383	3,808	3,820
Home equity line of credit
Schedule of Financing Receivables [Line Items]
Nonaccrual loans	254	457	575
Consumer
Schedule of Financing Receivables [Line Items]
Nonaccrual loans	$ 0	$ 0	$ 0

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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