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Loans - Loan Portfolio by Class (Details) - USD ($) | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | $ 1,686,990,000 | $ 1,635,718,000
90+ Days Past Due and Accruing | 240,000 |
Loans on nonaccrual status | 1,169,000 | 1,189,000
30-59 Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 11,964,000 |
Loans on nonaccrual status | 122,000 |
60-89 Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 2,555,000 |
90+ Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 1,251,000 |
Loans on nonaccrual status | 1,000,000.0 |
Total Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 15,770,000 |
Current |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 1,671,220,000 |
Loans on nonaccrual status | 36,000 |
Commercial real estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 630,018,000 | 592,301,000
Loans on nonaccrual status | 264,000 |
Commercial real estate | 90+ Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 264,000 |
Commercial real estate | Total Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 264,000 |
Commercial real estate | Current |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 629,754,000 |
Commercial business |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 117,505,000 | 118,605,000
Commercial business | Current |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 117,505,000 |
Construction - commercial real estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 53,620,000 | 49,136,000
Construction - commercial real estate | Current |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 53,620,000 |
Land acquisition and development |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 33,107,000 | 37,537,000
Land acquisition and development | Current |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 33,107,000 |
Builder lines |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 29,857,000 | 34,538,000
Builder lines | Current |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 29,857,000 |
Construction - consumer real estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 11,542,000 | 10,539,000
Construction - consumer real estate | Current |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 11,542,000 |
Residential mortgage |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 282,111,000 | 266,267,000
90+ Days Past Due and Accruing | 240,000 |
Loans on nonaccrual status | 149,000 | 156,000
Residential mortgage | 30-59 Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 794,000 |
Residential mortgage | 60-89 Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 307,000 |
Residential mortgage | 90+ Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 240,000 |
Residential mortgage | Total Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 1,341,000 |
Residential mortgage | Current |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 280,770,000 |
Equity lines |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 45,410,000 | 43,300,000
Loans on nonaccrual status | 107,000 | 108,000
Equity lines | 30-59 Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 146,000 |
Equity lines | 60-89 Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 192,000 |
Equity lines | 90+ Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 98,000 |
Equity lines | Total Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 436,000 |
Equity lines | Current |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 44,974,000 |
Other consumer |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 8,792,000 | 8,938,000
Other consumer | 30-59 Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 30,000 |
Other consumer | Total Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 30,000 |
Other consumer | Current |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 8,762,000 |
Consumer finance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 475,028,000 |
Consumer finance | Automobiles |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 408,010,000 | 411,112,000
Loans on nonaccrual status | 610,000 | 842,000
Consumer finance | Automobiles | 30-59 Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 10,842,000 |
Consumer finance | Automobiles | 60-89 Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 2,002,000 |
Consumer finance | Automobiles | 90+ Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 610,000 |
Consumer finance | Automobiles | Total Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 13,454,000 |
Consumer finance | Automobiles | Current |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 394,556,000 |
Consumer finance | Marine and recreational vehicles |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 67,018,000 | 63,445,000
Loans on nonaccrual status | 39,000 | $ 83,000
Consumer finance | Marine and recreational vehicles | 30-59 Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 152,000 |
Consumer finance | Marine and recreational vehicles | 60-89 Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 54,000 |
Consumer finance | Marine and recreational vehicles | 90+ Days Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 39,000 |
Consumer finance | Marine and recreational vehicles | Total Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | 245,000 |
Consumer finance | Marine and recreational vehicles | Current |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, gross | $ 66,773,000 |

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