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Allowance for Loan Losses - Financing Receivable and Allowance Element by Class (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | $ 15,521 | $ 16,253
Commercial | Real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 5,367 | 5,178
Commercial | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 746 | 662
Commercial | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 2,830 | 3,438
Municipal |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 157 | 171
Residential | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 148 | 102
Residential | Term |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 2,733 | 2,579
Home equity line of credit |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 925 | 1,211
Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 833 | 778
Unallocated |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 1,782 | 2,134
Specific Reserves on Loans Evaluated Individually for Impairment |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 576 | 462
Specific Reserves on Loans Evaluated Individually for Impairment | Commercial | Real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 42 | 112
Specific Reserves on Loans Evaluated Individually for Impairment | Commercial | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 16 | 18
Specific Reserves on Loans Evaluated Individually for Impairment | Commercial | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 381 | 169
Specific Reserves on Loans Evaluated Individually for Impairment | Municipal |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 0 | 0
Specific Reserves on Loans Evaluated Individually for Impairment | Residential | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 0 | 0
Specific Reserves on Loans Evaluated Individually for Impairment | Residential | Term |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 137 | 163
Specific Reserves on Loans Evaluated Individually for Impairment | Home equity line of credit |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 0 | 0
Specific Reserves on Loans Evaluated Individually for Impairment | Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 0 | 0
Specific Reserves on Loans Evaluated Individually for Impairment | Unallocated |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 0 | 0
General Reserves on Loans Based on Historical Loss Experience |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 1,856 | 1,862
General Reserves on Loans Based on Historical Loss Experience | Commercial | Real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 831 | 721
General Reserves on Loans Based on Historical Loss Experience | Commercial | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 114 | 92
General Reserves on Loans Based on Historical Loss Experience | Commercial | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 382 | 465
General Reserves on Loans Based on Historical Loss Experience | Municipal |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 0 | 0
General Reserves on Loans Based on Historical Loss Experience | Residential | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 10 | 6
General Reserves on Loans Based on Historical Loss Experience | Residential | Term |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 175 | 145
General Reserves on Loans Based on Historical Loss Experience | Home equity line of credit |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 101 | 151
General Reserves on Loans Based on Historical Loss Experience | Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 243 | 282
General Reserves on Loans Based on Historical Loss Experience | Unallocated |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 0 | 0
Reserves for Qualitative Factors |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 11,307 | 11,795
Reserves for Qualitative Factors | Commercial | Real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 4,494 | 4,345
Reserves for Qualitative Factors | Commercial | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 616 | 552
Reserves for Qualitative Factors | Commercial | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 2,067 | 2,804
Reserves for Qualitative Factors | Municipal |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 157 | 171
Reserves for Qualitative Factors | Residential | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 138 | 96
Reserves for Qualitative Factors | Residential | Term |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 2,421 | 2,271
Reserves for Qualitative Factors | Home equity line of credit |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 824 | 1,060
Reserves for Qualitative Factors | Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 590 | 496
Reserves for Qualitative Factors | Unallocated |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 0 | 0
Unallocated Reserves |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 1,782 | 2,134
Unallocated Reserves | Commercial | Real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 0 | 0
Unallocated Reserves | Commercial | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 0 | 0
Unallocated Reserves | Commercial | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 0 | 0
Unallocated Reserves | Municipal |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 0 | 0
Unallocated Reserves | Residential | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 0 | 0
Unallocated Reserves | Residential | Term |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 0 | 0
Unallocated Reserves | Home equity line of credit |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 0 | 0
Unallocated Reserves | Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | 0 | 0
Unallocated Reserves | Unallocated |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for loan losses | $ 1,782 | $ 2,134

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