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Allowance for Loan Losses - Composition of Allowance for Loans Losses, by Class (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for Loans Evaluated Individually for Impairment | $ 576 | $ 462 | $ 2,213
Allowance for Loans Evaluated Collectively for Impairment | 14,945 | 15,791 | 9,426
Total Allowance for Loan Losses | 15,521 | 16,253 |
Commercial | Real estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for Loans Evaluated Individually for Impairment | 42 | 112 | 251
Allowance for Loans Evaluated Collectively for Impairment | 5,325 | 5,066 | 3,491
Total Allowance for Loan Losses | 5,367 | 5,178 |
Commercial | Construction |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for Loans Evaluated Individually for Impairment | 16 | 18 | 0
Allowance for Loans Evaluated Collectively for Impairment | 730 | 644 | 365
Total Allowance for Loan Losses | 746 | 662 |
Commercial | Other |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for Loans Evaluated Individually for Impairment | 381 | 169 | 1,273
Allowance for Loans Evaluated Collectively for Impairment | 2,449 | 3,269 | 2,056
Total Allowance for Loan Losses | 2,830 | 3,438 |
Municipal |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for Loans Evaluated Individually for Impairment | 0 | 0 | 0
Allowance for Loans Evaluated Collectively for Impairment | 157 | 171 | 27
Total Allowance for Loan Losses | 157 | 171 |
Residential | Construction |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for Loans Evaluated Individually for Impairment | 0 | 0 | 0
Allowance for Loans Evaluated Collectively for Impairment | 148 | 102 | 25
Total Allowance for Loan Losses | 148 | 102 |
Residential | Term |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for Loans Evaluated Individually for Impairment | 137 | 163 | 237
Allowance for Loans Evaluated Collectively for Impairment | 2,596 | 2,416 | 787
Total Allowance for Loan Losses | 2,733 | 2,579 |
Home equity line of credit |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for Loans Evaluated Individually for Impairment | 0 | 0 | 447
Allowance for Loans Evaluated Collectively for Impairment | 925 | 1,211 | 631
Total Allowance for Loan Losses | 925 | 1,211 |
Consumer |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for Loans Evaluated Individually for Impairment | 0 | 0 | 5
Allowance for Loans Evaluated Collectively for Impairment | 833 | 778 | 862
Total Allowance for Loan Losses | 833 | 778 |
Unallocated |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for Loans Evaluated Individually for Impairment | 0 | 0 | 0
Allowance for Loans Evaluated Collectively for Impairment | 1,782 | 2,134 | $ 1,182
Total Allowance for Loan Losses | $ 1,782 | $ 2,134 |

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