Loans and the Allowance for Credit Losses - Non-performing Loans Disaggregated by Loan Category (Details) - Non-Performing Loans - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Financing Receivable Recorded Investment Past Due [Line Items]
Non-accrual loans	$ 5,138	$ 4,628
Troubled debt restructurings	741	758
Total	5,879	5,386
Residential Mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Non-accrual loans	4,067	3,777
Troubled debt restructurings	646	652
Total	4,713	4,429
Commercial Mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Non-accrual loans	450	517
Total	450	517
Home Equity
Financing Receivable Recorded Investment Past Due [Line Items]
Non-accrual loans	520	223
Total	520	223
Commercial and Industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Non-accrual loans	101	111
Troubled debt restructurings	95	106
Total	$ 196	$ 217