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Loans - Schedule of Classes of the Loan Portfolio Summarized by the Aggregate Risk Rating (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020 | Sep. 30, 2020
--- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | $ 1,486,886 | $ 1,637,784 | $ 1,700,883
Pass |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 1,379,688 | 1,527,119 |
Special Mention |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 88,795 | 90,334 |
Substandard |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 18,403 | 20,331 |
Doubtful |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Commercial and industrial |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 194,845 | 320,154 | 345,011
Commercial and industrial | Pass |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 185,949 | 308,929 |
Commercial and industrial | Special Mention |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 6,459 | 7,061 |
Commercial and industrial | Substandard |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 2,437 | 4,164 |
Commercial and industrial | Doubtful |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Commercial real estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 785,207 | 744,627 | 754,074
Commercial real estate | Pass |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 703,881 | 660,135 |
Commercial real estate | Special Mention |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 67,609 | 70,828 |
Commercial real estate | Substandard |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 13,717 | 13,664 |
Commercial real estate | Doubtful |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Commercial real estate construction |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 43,807 | 53,902 | 50,367
Commercial real estate construction | Pass |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 40,202 | 49,762 |
Commercial real estate construction | Special Mention |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 3,605 | 4,140 |
Commercial real estate construction | Substandard |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Commercial real estate construction | Doubtful |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Residential mortgage |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 356,882 | 401,340 | 428,480
Residential mortgage | Pass |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 345,065 | 391,419 |
Residential mortgage | Special Mention |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 10,164 | 7,862 |
Residential mortgage | Substandard |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 1,653 | 2,059 |
Residential mortgage | Doubtful |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Home equity lines of credit |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 94,604 | 104,610 | 109,293
Home equity lines of credit | Pass |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 93,050 | 103,725 |
Home equity lines of credit | Special Mention |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 958 | 443 |
Home equity lines of credit | Substandard |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 596 | 442 |
Home equity lines of credit | Doubtful |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Consumer |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 11,541 | 13,151 | $ 13,658
Consumer | Pass |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 11,541 | 13,149 |
Consumer | Special Mention |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Consumer | Substandard |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 2 |
Consumer | Doubtful |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Originated Loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 1,143,034 | 1,228,096 |
Originated Loans | Pass |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 1,062,536 | 1,149,058 |
Originated Loans | Special Mention |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 68,929 | 65,709 |
Originated Loans | Substandard |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 11,569 | 13,329 |
Originated Loans | Doubtful |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Originated Loans | Commercial and industrial |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 162,060 | 277,903 |
Originated Loans | Commercial and industrial | Pass |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 154,999 | 270,047 |
Originated Loans | Commercial and industrial | Special Mention |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 4,941 | 5,168 |
Originated Loans | Commercial and industrial | Substandard |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 2,120 | 2,688 |
Originated Loans | Commercial and industrial | Doubtful |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Originated Loans | Commercial real estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 550,241 | 479,123 |
Originated Loans | Commercial real estate | Pass |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 484,915 | 414,538 |
Originated Loans | Commercial real estate | Special Mention |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 55,952 | 54,122 |
Originated Loans | Commercial real estate | Substandard |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 9,374 | 10,463 |
Originated Loans | Commercial real estate | Doubtful |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Originated Loans | Commercial real estate construction |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 34,929 | 41,208 |
Originated Loans | Commercial real estate construction | Pass |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 33,549 | 39,462 |
Originated Loans | Commercial real estate construction | Special Mention |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 1,380 | 1,746 |
Originated Loans | Commercial real estate construction | Substandard |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Originated Loans | Commercial real estate construction | Doubtful |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Originated Loans | Residential mortgage |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 308,715 | 337,137 |
Originated Loans | Residential mortgage | Pass |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 302,905 | 332,632 |
Originated Loans | Residential mortgage | Special Mention |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 5,735 | 4,327 |
Originated Loans | Residential mortgage | Substandard |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 75 | 178 |
Originated Loans | Residential mortgage | Doubtful |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Originated Loans | Home equity lines of credit |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 76,587 | 80,906 |
Originated Loans | Home equity lines of credit | Pass |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 75,666 | 80,560 |
Originated Loans | Home equity lines of credit | Special Mention |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 921 | 346 |
Originated Loans | Home equity lines of credit | Substandard |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Originated Loans | Home equity lines of credit | Doubtful |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Originated Loans | Consumer |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 10,502 | 11,819 |
Originated Loans | Consumer | Pass |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 10,502 | 11,819 |
Originated Loans | Consumer | Special Mention |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Originated Loans | Consumer | Substandard |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Originated Loans | Consumer | Doubtful |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Acquired Loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 343,852 | 409,688 |
Acquired Loans | Pass |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 317,152 | 378,061 |
Acquired Loans | Special Mention |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 19,866 | 24,625 |
Acquired Loans | Substandard |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 6,834 | 7,002 |
Acquired Loans | Doubtful |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Acquired Loans | Commercial and industrial |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 32,785 | 42,251 |
Acquired Loans | Commercial and industrial | Pass |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 30,950 | 38,882 |
Acquired Loans | Commercial and industrial | Special Mention |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 1,518 | 1,893 |
Acquired Loans | Commercial and industrial | Substandard |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 317 | 1,476 |
Acquired Loans | Commercial and industrial | Doubtful |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Acquired Loans | Commercial real estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 234,966 | 265,504 |
Acquired Loans | Commercial real estate | Pass |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 218,966 | 245,597 |
Acquired Loans | Commercial real estate | Special Mention |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 11,657 | 16,706 |
Acquired Loans | Commercial real estate | Substandard |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 4,343 | 3,201 |
Acquired Loans | Commercial real estate | Doubtful |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Acquired Loans | Commercial real estate construction |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 8,878 | 12,694 |
Acquired Loans | Commercial real estate construction | Pass |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 6,653 | 10,300 |
Acquired Loans | Commercial real estate construction | Special Mention |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 2,225 | 2,394 |
Acquired Loans | Commercial real estate construction | Substandard |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Acquired Loans | Commercial real estate construction | Doubtful |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Acquired Loans | Residential mortgage |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 48,167 | 64,203 |
Acquired Loans | Residential mortgage | Pass |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 42,160 | 58,787 |
Acquired Loans | Residential mortgage | Special Mention |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 4,429 | 3,535 |
Acquired Loans | Residential mortgage | Substandard |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 1,578 | 1,881 |
Acquired Loans | Residential mortgage | Doubtful |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Acquired Loans | Home equity lines of credit |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 18,017 | 23,704 |
Acquired Loans | Home equity lines of credit | Pass |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 17,384 | 23,165 |
Acquired Loans | Home equity lines of credit | Special Mention |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 37 | 97 |
Acquired Loans | Home equity lines of credit | Substandard |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 596 | 442 |
Acquired Loans | Home equity lines of credit | Doubtful |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Acquired Loans | Consumer |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 1,039 | 1,332 |
Acquired Loans | Consumer | Pass |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 1,039 | 1,330 |
Acquired Loans | Consumer | Special Mention |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Acquired Loans | Consumer | Substandard |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 2 |
Acquired Loans | Consumer | Doubtful |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | $ 0 | $ 0 |

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