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Loans - Impaired Loans by Class (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |
Recorded Investment, No Related Allowance | $ 4,359 | $ 8,968 | $ 12,098
Recorded Investment, With Related Allowance | 1,801 | 3,084 | 3,941
Balance of impaired loans | 6,160 | 12,052 | 16,039
Impaired Financing Receivable, Unpaid Principal Balance [Abstract] |  |  |
Unpaid Principal Balance, No Related Allowance | 4,942 | 10,453 | 13,806
Unpaid Principal Balance, With Related Allowance | 1,906 | 3,307 | 4,036
Unpaid Principal Balance | 6,848 | 13,760 | 17,842
Related Allowance | 398 | 576 | 462
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |
Average Recorded Investment, No Related Allowance | 6,732 | 9,553 | 15,473
Average Recorded Investment, With Related Allowance | 2,804 | 3,568 | 5,615
Average Recorded Investment | 9,536 | 13,121 | 21,088
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract] |  |  |
Recognized Interest Income, No Related Allowance | 154 | 166 | 336
Recognized Interest Income, With Related Allowance | 50 | 76 | 142
Recognized Interest Income | 204 | 242 | 478
Commercial | Real estate |  |  |
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |
Recorded Investment, No Related Allowance | 1,236 | 1,386 | 2,060
Recorded Investment, With Related Allowance | 0 | 42 | 969
Balance of impaired loans | 1,236 | 1,428 | 3,029
Impaired Financing Receivable, Unpaid Principal Balance [Abstract] |  |  |
Unpaid Principal Balance, No Related Allowance | 1,532 | 1,689 | 2,368
Unpaid Principal Balance, With Related Allowance | 0 | 71 | 995
Unpaid Principal Balance | 1,532 | 1,760 | 3,363
Related Allowance | 0 | 42 | 112
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |
Average Recorded Investment, No Related Allowance | 1,440 | 1,590 | 4,123
Average Recorded Investment, With Related Allowance | 11 | 614 | 1,018
Average Recorded Investment | 1,451 | 2,204 | 5,141
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract] |  |  |
Recognized Interest Income, No Related Allowance | 50 | 63 | 127
Recognized Interest Income, With Related Allowance | 0 | 0 | 43
Recognized Interest Income | 50 | 63 | 170
Commercial | Construction |  |  |
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |
Recorded Investment, No Related Allowance | 685 | 28 | 89
Recorded Investment, With Related Allowance | 0 | 661 | 681
Balance of impaired loans | 685 | 689 | 770
Impaired Financing Receivable, Unpaid Principal Balance [Abstract] |  |  |
Unpaid Principal Balance, No Related Allowance | 687 | 28 | 89
Unpaid Principal Balance, With Related Allowance | 0 | 661 | 681
Unpaid Principal Balance | 687 | 689 | 770
Related Allowance | 0 | 16 | 18
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |
Average Recorded Investment, No Related Allowance | 81 | 22 | 358
Average Recorded Investment, With Related Allowance | 606 | 661 | 579
Average Recorded Investment | 687 | 683 | 937
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract] |  |  |
Recognized Interest Income, No Related Allowance | 35 | 0 | 0
Recognized Interest Income, With Related Allowance | 0 | 22 | 30
Recognized Interest Income | 35 | 22 | 30
Commercial | Other |  |  |
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |
Recorded Investment, No Related Allowance | 301 | 917 | 1,591
Recorded Investment, With Related Allowance | 545 | 386 | 188
Balance of impaired loans | 846 | 1,303 | 1,779
Impaired Financing Receivable, Unpaid Principal Balance [Abstract] |  |  |
Unpaid Principal Balance, No Related Allowance | 348 | 1,009 | 1,623
Unpaid Principal Balance, With Related Allowance | 647 | 411 | 202
Unpaid Principal Balance | 995 | 1,420 | 1,825
Related Allowance | 298 | 381 | 169
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |
Average Recorded Investment, No Related Allowance | 408 | 1,051 | 999
Average Recorded Investment, With Related Allowance | 693 | 396 | 1,193
Average Recorded Investment | 1,101 | 1,447 | 2,192
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract] |  |  |
Recognized Interest Income, No Related Allowance | 13 | 15 | 15
Recognized Interest Income, With Related Allowance | 0 | 0 | 3
Recognized Interest Income | 13 | 15 | 18
Municipal |  |  |
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |
Recorded Investment, No Related Allowance | 0 | 0 | 0
Recorded Investment, With Related Allowance | 0 | 0 | 0
Balance of impaired loans | 0 | 0 | 0
Impaired Financing Receivable, Unpaid Principal Balance [Abstract] |  |  |
Unpaid Principal Balance, No Related Allowance | 0 | 0 | 0
Unpaid Principal Balance, With Related Allowance | 0 | 0 | 0
Unpaid Principal Balance | 0 | 0 | 0
Related Allowance | 0 | 0 | 0
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |
Average Recorded Investment, No Related Allowance | 0 | 0 | 0
Average Recorded Investment, With Related Allowance | 0 | 0 | 0
Average Recorded Investment | 0 | 0 | 0
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract] |  |  |
Recognized Interest Income, No Related Allowance | 0 | 0 | 0
Recognized Interest Income, With Related Allowance | 0 | 0 | 0
Recognized Interest Income | 0 | 0 | 0
Residential | Construction |  |  |
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |
Recorded Investment, No Related Allowance | 0 | 0 | 0
Recorded Investment, With Related Allowance | 0 | 0 | 0
Balance of impaired loans | 0 | 0 | 0
Impaired Financing Receivable, Unpaid Principal Balance [Abstract] |  |  |
Unpaid Principal Balance, No Related Allowance | 0 | 0 | 0
Unpaid Principal Balance, With Related Allowance | 0 | 0 | 0
Unpaid Principal Balance | 0 | 0 | 0
Related Allowance | 0 | 0 | 0
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |
Average Recorded Investment, No Related Allowance | 0 | 0 | 0
Average Recorded Investment, With Related Allowance | 0 | 0 | 0
Average Recorded Investment | 0 | 0 | 0
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract] |  |  |
Recognized Interest Income, No Related Allowance | 0 | 0 | 0
Recognized Interest Income, With Related Allowance | 0 | 0 | 0
Recognized Interest Income | 0 | 0 | 0
Residential | Term |  |  |
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |
Recorded Investment, No Related Allowance | 1,833 | 6,178 | 7,335
Recorded Investment, With Related Allowance | 1,256 | 1,995 | 2,079
Balance of impaired loans | 3,089 | 8,173 | 9,414
Impaired Financing Receivable, Unpaid Principal Balance [Abstract] |  |  |
Unpaid Principal Balance, No Related Allowance | 2,035 | 7,238 | 8,629
Unpaid Principal Balance, With Related Allowance | 1,259 | 2,164 | 2,134
Unpaid Principal Balance | 3,294 | 9,402 | 10,763
Related Allowance | 100 | 137 | 163
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |
Average Recorded Investment, No Related Allowance | 4,507 | 6,429 | 8,773
Average Recorded Investment, With Related Allowance | 1,486 | 1,897 | 2,073
Average Recorded Investment | 5,993 | 8,326 | 10,846
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract] |  |  |
Recognized Interest Income, No Related Allowance | 56 | 87 | 193
Recognized Interest Income, With Related Allowance | 50 | 54 | 65
Recognized Interest Income | 106 | 141 | 258
Home equity line of credit |  |  |
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |
Recorded Investment, No Related Allowance | 304 | 457 | 1,015
Recorded Investment, With Related Allowance | 0 | 0 | 24
Balance of impaired loans | 304 | 457 | 1,039
Impaired Financing Receivable, Unpaid Principal Balance [Abstract] |  |  |
Unpaid Principal Balance, No Related Allowance | 340 | 487 | 1,089
Unpaid Principal Balance, With Related Allowance | 0 | 0 | 24
Unpaid Principal Balance | 340 | 487 | 1,113
Related Allowance | 0 | 0 | 0
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |
Average Recorded Investment, No Related Allowance | 295 | 461 | 1,219
Average Recorded Investment, With Related Allowance | 8 | 0 | 744
Average Recorded Investment | 303 | 461 | 1,963
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract] |  |  |
Recognized Interest Income, No Related Allowance | 0 | 0 | 0
Recognized Interest Income, With Related Allowance | 0 | 0 | 1
Recognized Interest Income | 0 | 0 | 1
Consumer |  |  |
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |
Recorded Investment, No Related Allowance | 0 | 2 | 8
Recorded Investment, With Related Allowance | 0 | 0 | 0
Balance of impaired loans | 0 | 2 | 8
Impaired Financing Receivable, Unpaid Principal Balance [Abstract] |  |  |
Unpaid Principal Balance, No Related Allowance | 0 | 2 | 8
Unpaid Principal Balance, With Related Allowance | 0 | 0 | 0
Unpaid Principal Balance | 0 | 2 | 8
Related Allowance | 0 | 0 | 0
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |
Average Recorded Investment, No Related Allowance | 1 | 0 | 1
Average Recorded Investment, With Related Allowance | 0 | 0 | 8
Average Recorded Investment | 1 | 0 | 9
Impaired Financing Receivable, Interest Income, Cash Basis Method [Abstract] |  |  |
Recognized Interest Income, No Related Allowance | 0 | 1 | 1
Recognized Interest Income, With Related Allowance | 0 | 0 | 0
Recognized Interest Income | $ 0 | $ 1 | $ 1

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