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Loans - Schedule of Amortized Cost of Collateral-dependent Loans by Class (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Jun. 30, 2025 | Dec. 31, 2024 | Sep. 30, 2024 | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | --- | --- | --- | --- | ---
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | $ 4,198,283 |  | $ 4,038,825 |  |  |
Allowance for Credit Losses | 62,459 | $ 61,157 | 59,379 | $ 57,444 | $ 56,241 | $ 54,658
Accrued interest excluded from total | 14,157 |  | 13,461 |  |  |
Real Estate |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 21,110 |  | 6,539 |  |  |
Accrued interest excluded from total | 8 |  | 5 |  |  |
Other |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 9,801 |  | 5,611 |  |  |
Accrued interest excluded from total | 56 |  | 34 |  |  |
Allowance for Credit Losses |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Allowance for Credit Losses | 5,660 |  | 2,300 |  |  |
Commercial |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 2,125,053 |  | 1,937,364 |  |  |
Allowance for Credit Losses | 28,484 | 25,890 | 22,872 | 20,162 | 18,979 | 16,724
Accrued interest excluded from total | 6,852 |  | 6,496 |  |  |
Commercial | Commercial and industrial |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 1,118,967 |  | 1,001,329 |  |  |
Accrued interest excluded from total | 3,657 |  | 3,310 |  |  |
Commercial | Commercial and industrial | Real Estate |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 687 |  | 686 |  |  |
Commercial | Commercial and industrial | Other |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 9,180 |  | 5,166 |  |  |
Commercial | Commercial and industrial | Allowance for Credit Losses |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Allowance for Credit Losses | 1,481 |  | 1,647 |  |  |
Commercial | Commercial real estate |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 1,006,086 |  | 936,035 |  |  |
Accrued interest excluded from total | 3,195 |  | 3,186 |  |  |
Commercial | Commercial real estate | Real Estate |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 15,012 |  | 817 |  |  |
Commercial | Commercial real estate | Other |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 0 |  | 0 |  |  |
Commercial | Commercial real estate | Allowance for Credit Losses |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Allowance for Credit Losses | 3,459 |  | 3 |  |  |
Mortgage |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 1,517,656 |  | 1,516,726 |  |  |
Allowance for Credit Losses | 20,546 | 20,752 | 22,317 | 19,832 | 20,731 | 21,386
Accrued interest excluded from total | 5,687 |  | 5,357 |  |  |
Mortgage | 1-4 family owner occupied - jumbo |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 878,803 |  | 875,551 |  |  |
Accrued interest excluded from total | 2,734 |  | 2,520 |  |  |
Mortgage | 1-4 family owner occupied - jumbo | Real Estate |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 1,480 |  | 1,480 |  |  |
Mortgage | 1-4 family owner occupied - jumbo | Other |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 0 |  | 0 |  |  |
Mortgage | 1-4 family owner occupied - jumbo | Allowance for Credit Losses |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Allowance for Credit Losses | 0 |  | 0 |  |  |
Mortgage | 1-4 family owner occupied - non-jumbo |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 288,620 |  | 299,142 |  |  |
Accrued interest excluded from total | 1,196 |  | 1,160 |  |  |
Mortgage | 1-4 family owner occupied - non-jumbo | Real Estate |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 2,688 |  | 2,903 |  |  |
Mortgage | 1-4 family owner occupied - non-jumbo | Other |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 0 |  | 0 |  |  |
Mortgage | 1-4 family owner occupied - non-jumbo | Allowance for Credit Losses |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Allowance for Credit Losses | 366 |  | 347 |  |  |
Mortgage | 1-4 family non-owner occupied |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 169,238 |  | 176,950 |  |  |
Accrued interest excluded from total | 669 |  | 680 |  |  |
Mortgage | 1-4 family non-owner occupied | Real Estate |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 154 |  | 0 |  |  |
Mortgage | 1-4 family non-owner occupied | Other |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 0 |  | 0 |  |  |
Mortgage | 1-4 family non-owner occupied | Allowance for Credit Losses |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Allowance for Credit Losses | 5 |  | 0 |  |  |
Mortgage | 1-4 family - 2nd lien |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 153,190 |  | 133,947 |  |  |
Accrued interest excluded from total | 944 |  | 846 |  |  |
Mortgage | 1-4 family - 2nd lien | Real Estate |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 1,032 |  | 510 |  |  |
Mortgage | 1-4 family - 2nd lien | Other |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 0 |  | 0 |  |  |
Mortgage | 1-4 family - 2nd lien | Allowance for Credit Losses |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Allowance for Credit Losses | 109 |  | 94 |  |  |
Mortgage | Resort lending |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 27,805 |  | 31,136 |  |  |
Accrued interest excluded from total | 144 |  | 151 |  |  |
Mortgage | Resort lending | Real Estate |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 57 |  | 143 |  |  |
Mortgage | Resort lending | Other |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 0 |  | 0 |  |  |
Mortgage | Resort lending | Allowance for Credit Losses |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Allowance for Credit Losses | 20 |  | 51 |  |  |
Installment |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 555,574 |  | 584,735 |  |  |
Allowance for Credit Losses | 2,723 | $ 3,015 | 3,040 | $ 4,544 | $ 3,901 | $ 4,126
Accrued interest excluded from total | 1,618 |  | 1,608 |  |  |
Installment | Boat lending |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 279,405 |  | 264,341 |  |  |
Accrued interest excluded from total | 823 |  | 736 |  |  |
Installment | Boat lending | Real Estate |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 0 |  | 0 |  |  |
Installment | Boat lending | Other |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 318 |  | 87 |  |  |
Installment | Boat lending | Allowance for Credit Losses |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Allowance for Credit Losses | 113 |  | 31 |  |  |
Installment | Recreational vehicle lending |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 200,344 |  | 224,537 |  |  |
Accrued interest excluded from total | 521 |  | 576 |  |  |
Installment | Recreational vehicle lending | Real Estate |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 0 |  | 0 |  |  |
Installment | Recreational vehicle lending | Other |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 215 |  | 266 |  |  |
Installment | Recreational vehicle lending | Allowance for Credit Losses |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Allowance for Credit Losses | 76 |  | 94 |  |  |
Installment | Other |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 75,825 |  | 95,857 |  |  |
Accrued interest excluded from total | 274 |  | 296 |  |  |
Installment | Other | Real Estate |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 0 |  | 0 |  |  |
Installment | Other | Other |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans | 88 |  | 92 |  |  |
Installment | Other | Allowance for Credit Losses |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Allowance for Credit Losses | $ 31 |  | $ 33 |  |  |

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