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Loans and Allowance for Credit Losses - Schedule of Loan Portfolio Summarized by Performing and Nonperforming (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022 | Sep. 30, 2022
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Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 196,645 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 300,366 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 245,509 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 117,772 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 112,273 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 503,694 |  |
Financing Receivable, Revolving | 139,707 |  |
Financing receivable, before allowance for credit loss | 1,615,966 | $ 1,538,610 | $ 1,527,128
Performing Loans |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 196,645 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 300,366 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 245,509 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 117,772 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 111,952 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 500,705 |  |
Financing Receivable, Revolving | 139,423 |  |
Financing receivable, before allowance for credit loss | 1,612,372 | 1,534,753 |
Nonperforming Loans |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 321 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 2,989 |  |
Financing Receivable, Revolving | 284 |  |
Financing receivable, before allowance for credit loss | 3,594 | 3,857 |
Commercial and industrial |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 4,822 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 25,920 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 36,558 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 16,891 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 14,574 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 25,392 |  |
Financing Receivable, Revolving | 29,870 |  |
Financing receivable, before allowance for credit loss | 154,027 | 178,762 | 176,692
Commercial and industrial | Performing Loans |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 4,822 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 25,920 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 36,558 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 16,891 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 14,574 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 25,206 |  |
Financing Receivable, Revolving | 29,586 |  |
Financing receivable, before allowance for credit loss | 153,557 | 177,981 |
Commercial and industrial | Nonperforming Loans |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 186 |  |
Financing Receivable, Revolving | 284 |  |
Financing receivable, before allowance for credit loss | 470 | 781 |
Commercial real estate |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 114,084 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 150,850 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 144,563 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 66,947 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 76,137 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 322,371 |  |
Financing Receivable, Revolving | 17,413 |  |
Financing receivable, before allowance for credit loss | 892,365 | 821,805 | 823,827
Commercial real estate | Performing Loans |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 114,084 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 150,850 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 144,563 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 66,947 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 75,816 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 321,004 |  |
Financing Receivable, Revolving | 17,413 |  |
Financing receivable, before allowance for credit loss | 890,677 | 819,932 |
Commercial real estate | Nonperforming Loans |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 321 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,367 |  |
Financing Receivable, Revolving | 0 |  |
Financing receivable, before allowance for credit loss | 1,688 | 1,873 |
Commercial real estate construction |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 19,757 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 46,857 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 6,392 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 1,020 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 338 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 4,423 |  |
Financing Receivable, Revolving | 7,721 |  |
Financing receivable, before allowance for credit loss | 86,508 | 80,470 | 66,189
Commercial real estate construction | Performing Loans |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 19,757 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 46,857 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 6,392 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 1,020 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 338 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 4,423 |  |
Financing Receivable, Revolving | 7,721 |  |
Financing receivable, before allowance for credit loss | 86,508 | 80,470 |
Commercial real estate construction | Nonperforming Loans |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 |  |
Financing Receivable, Revolving | 0 |  |
Financing receivable, before allowance for credit loss | 0 | 0 |
Residential mortgage |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 54,695 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 73,839 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 57,124 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 32,319 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 20,817 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 144,962 |  |
Financing Receivable, Revolving | 548 |  |
Financing receivable, before allowance for credit loss | 384,304 | 362,098 | 360,661
Residential mortgage | Performing Loans |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 54,695 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 73,839 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 57,124 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 32,319 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 20,817 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 143,962 |  |
Financing Receivable, Revolving | 548 |  |
Financing receivable, before allowance for credit loss | 383,304 | 361,393 |
Residential mortgage | Nonperforming Loans |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,000 |  |
Financing Receivable, Revolving | 0 |  |
Financing receivable, before allowance for credit loss | 1,000 | 705 |
Home equity lines of credit |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 953 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 39 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 97 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 5,298 |  |
Financing Receivable, Revolving | 82,300 |  |
Financing receivable, before allowance for credit loss | 88,687 | 84,141 | 87,555
Home equity lines of credit | Performing Loans |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 953 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 39 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 97 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 4,888 |  |
Financing Receivable, Revolving | 82,300 |  |
Financing receivable, before allowance for credit loss | 88,277 | 83,643 |
Home equity lines of credit | Nonperforming Loans |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 410 |  |
Financing Receivable, Revolving | 0 |  |
Financing receivable, before allowance for credit loss | 410 | 498 |
Consumer |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 2,334 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 2,861 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 872 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 595 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 310 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,248 |  |
Financing Receivable, Revolving | 1,855 |  |
Financing receivable, before allowance for credit loss | 10,075 | 11,334 | $ 12,204
Consumer | Performing Loans |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 2,334 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 2,861 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 872 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 595 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 310 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,222 |  |
Financing Receivable, Revolving | 1,855 |  |
Financing receivable, before allowance for credit loss | 10,049 | 11,334 |
Consumer | Nonperforming Loans |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 26 |  |
Financing Receivable, Revolving | 0 |  |
Financing receivable, before allowance for credit loss | $ 26 | $ 0 |

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