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Loans and Allowance for Credit Losses - Amortized cost basis of loans (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | $ 596,068 |  |
2022 | 667,908 |  |
2021 | 452,797 |  |
2020 | 341,964 |  |
2019 | 191,673 |  |
Prior | 273,542 |  |
Loans amortized cost basis | 235,631 |  |
Loans | 2,759,583 | $ 2,443,994 |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Write-off, by Origination Year [Abstract] |  |  |
Current period gross charge-off, 2023 | 43 |  |
Current period gross charge-off, 2022 | 2 |  |
Current period gross charge-off, 2021 | 58 |  |
Current period gross charge-off, 2020 | 42 |  |
Current period gross charge-off, 2019 | 253 |  |
Current period gross charge-off, Prior | 215 |  |
Current period gross charge-off, Total | 613 | 1,549 | $ 1,922
Pass |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Loans |  | 2,408,709 |
Special Mention |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Loans |  | 22,032 |
Substandard |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Loans |  | 13,253 |
Commercial |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Loans | 1,849,267 | 1,563,356 |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Write-off, by Origination Year [Abstract] |  |  |
Current period gross charge-off, Total | 436 | 1,396 | 1,766
Commercial | Pass |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Loans |  | 1,529,512 |
Commercial | Special Mention |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Loans |  | 21,969 |
Commercial | Substandard |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Loans |  | 11,875 |
Consumer |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Loans | 910,316 | 880,638 |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Write-off, by Origination Year [Abstract] |  |  |
Current period gross charge-off, Total | 177 | 153 | 156
Consumer | Pass |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Loans |  | 879,197 |
Consumer | Special Mention |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Loans |  | 63 |
Consumer | Substandard |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Loans |  | 1,378 |
Commercial and industrial | Commercial |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 197,997 |  |
2022 | 93,934 |  |
2021 | 67,927 |  |
2020 | 70,600 |  |
2019 | 34,697 |  |
Prior | 17,566 |  |
Loans amortized cost basis | 115,600 |  |
Loans | 598,321 | 583,876 |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Write-off, by Origination Year [Abstract] |  |  |
Current period gross charge-off, 2023 | 39 |  |
Current period gross charge-off, 2021 | 49 |  |
Current period gross charge-off, 2020 | 11 |  |
Current period gross charge-off, 2019 | 247 |  |
Current period gross charge-off, Prior | 90 |  |
Current period gross charge-off, Total | 436 | 1,396 | 1,230
Commercial and industrial | Commercial | Pass |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 197,533 |  |
2022 | 89,090 |  |
2021 | 67,691 |  |
2020 | 64,272 |  |
2019 | 34,603 |  |
Prior | 15,053 |  |
Loans amortized cost basis | 100,239 |  |
Loans | 568,481 | 558,694 |
Commercial and industrial | Commercial | Special Mention |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Loans |  | 21,969 |
Commercial and industrial | Commercial | Substandard |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 464 |  |
2022 | 4,844 |  |
2021 | 236 |  |
2020 | 6,328 |  |
2019 | 94 |  |
Prior | 2,513 |  |
Loans amortized cost basis | 15,361 |  |
Loans | 29,840 | 3,213 |
Real estate construction | Commercial |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 29,902 |  |
2022 | 78,611 |  |
2021 | 14,326 |  |
2020 | 122 |  |
Prior | 952 |  |
Loans amortized cost basis | 121 |  |
Loans | 124,034 | 97,810 |
Real estate construction | Commercial | Pass |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 29,902 |  |
2022 | 57,944 |  |
2021 | 14,326 |  |
2020 | 122 |  |
Prior | 952 |  |
Loans amortized cost basis | 121 |  |
Loans | 103,367 | 97,548 |
Real estate construction | Commercial | Substandard |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2022 | 20,667 |  |
Loans | 20,667 | 262 |
Residential | Real estate first mortgage | Consumer |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 72,180 |  |
2022 | 207,177 |  |
2021 | 218,719 |  |
2020 | 108,100 |  |
2019 | 33,102 |  |
Prior | 87,317 |  |
Loans amortized cost basis | 284 |  |
Loans | 726,879 | 679,551 |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Write-off, by Origination Year [Abstract] |  |  |
Current period gross charge-off, 2021 | 9 |  |
Current period gross charge-off, Prior | 40 |  |
Current period gross charge-off, Total | 49 |  |
Residential | Real estate first mortgage | Consumer | Pass |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Loans |  | 678,743 |
Residential | Real estate first mortgage | Consumer | Special Mention |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Loans |  | 63 |
Residential | Real estate first mortgage | Consumer | Substandard |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Loans |  | 745 |
Residential | Real estate first mortgage | Consumer | Performing |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 72,180 |  |
2022 | 207,177 |  |
2021 | 218,719 |  |
2020 | 108,100 |  |
2019 | 33,102 |  |
Prior | 87,212 |  |
Loans amortized cost basis | 284 |  |
Loans | 726,774 |  |
Residential | Real estate first mortgage | Consumer | Nonperforming |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Prior | 105 |  |
Loans | 105 |  |
Residential | Real estate junior lien | Consumer |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 18,408 |  |
2022 | 15,655 |  |
2021 | 5,946 |  |
2020 | 4,857 |  |
2019 | 1,769 |  |
Prior | 5,280 |  |
Loans amortized cost basis | 102,219 |  |
Loans | 154,134 | 150,479 |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Write-off, by Origination Year [Abstract] |  |  |
Current period gross charge-off, Prior | 77 |  |
Current period gross charge-off, Total | 77 |  |
Residential | Real estate junior lien | Consumer | Pass |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Loans |  | 149,847 |
Residential | Real estate junior lien | Consumer | Substandard |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Loans |  | 632 |
Residential | Real estate junior lien | Consumer | Performing |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 18,408 |  |
2022 | 15,655 |  |
2021 | 5,946 |  |
2020 | 4,857 |  |
2019 | 1,769 |  |
Prior | 5,280 |  |
Loans amortized cost basis | 100,438 |  |
Loans | 152,353 |  |
Residential | Real estate junior lien | Consumer | Nonperforming |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Loans amortized cost basis | 1,781 |  |
Loans | 1,781 |  |
Commercial real estate | Commercial |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 272,261 |  |
2022 | 266,136 |  |
2021 | 144,899 |  |
2020 | 153,796 |  |
2019 | 120,551 |  |
Prior | 161,475 |  |
Loans amortized cost basis | 7,794 |  |
Loans | 1,126,912 | 881,670 |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Write-off, by Origination Year [Abstract] |  |  |
Current period gross charge-off, Total |  |  | 536
Commercial real estate | Commercial | Pass |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 272,261 |  |
2022 | 265,549 |  |
2021 | 142,027 |  |
2020 | 153,796 |  |
2019 | 116,861 |  |
Prior | 159,454 |  |
Loans amortized cost basis | 7,794 |  |
Loans | 1,117,742 | 873,270 |
Commercial real estate | Commercial | Special Mention |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Prior | 262 |  |
Loans | 262 |  |
Commercial real estate | Commercial | Substandard |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2022 | 587 |  |
2021 | 2,872 |  |
2019 | 3,690 |  |
Prior | 1,759 |  |
Loans | 8,908 | 8,400 |
Other revolving and installment | Consumer |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 5,320 |  |
2022 | 6,395 |  |
2021 | 980 |  |
2020 | 4,489 |  |
2019 | 1,554 |  |
Prior | 952 |  |
Loans amortized cost basis | 9,613 |  |
Loans | 29,303 | 50,608 |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Write-off, by Origination Year [Abstract] |  |  |
Current period gross charge-off, 2023 | 4 |  |
Current period gross charge-off, 2022 | 2 |  |
Current period gross charge-off, 2020 | 31 |  |
Current period gross charge-off, 2019 | 6 |  |
Current period gross charge-off, Prior | 8 |  |
Current period gross charge-off, Total | 51 | 153 | $ 156
Other revolving and installment | Consumer | Pass |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Loans |  | 50,607 |
Other revolving and installment | Consumer | Substandard |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Loans |  | $ 1 |
Other revolving and installment | Consumer | Performing |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 5,320 |  |
2022 | 6,395 |  |
2021 | 980 |  |
2020 | 4,489 |  |
2019 | 1,554 |  |
Prior | 952 |  |
Loans amortized cost basis | 9,613 |  |
Loans | $ 29,303 |  |

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