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Loans - Classes of Loans (Details) - USD ($) | Jun. 30, 2023 | Dec. 31, 2022 | Jun. 30, 2022 | Dec. 31, 2021
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Exclude accrued interest receivable from the amortized cost basis of loans | $ 6,800,000 |  |  |
Subtotal | 1,686,990,000 | $ 1,635,718,000 |  |
Less allowance for credit losses | (40,528,000) | (40,518,000) | $ (40,519,000) | $ (40,157,000)
Loans, net | 1,646,462,000 | 1,595,200,000 |  |
Commercial real estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Subtotal | 630,018,000 | 592,301,000 |  |
Commercial business |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Subtotal | 117,505,000 | 118,605,000 |  |
Construction - commercial real estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Subtotal | 53,620,000 | 49,136,000 |  |
Land acquisition and development |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Subtotal | 33,107,000 | 37,537,000 |  |
Builder lines |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Subtotal | 29,857,000 | 34,538,000 |  |
Construction - consumer real estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Subtotal | 11,542,000 | 10,539,000 |  |
Residential mortgage |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Subtotal | 282,111,000 | 266,267,000 |  |
Less allowance for credit losses |  | (2,622,000) | (2,553,000) | (2,660,000)
Equity lines |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Subtotal | 45,410,000 | 43,300,000 |  |
Less allowance for credit losses |  | (497,000) | (524,000) | (593,000)
Other consumer |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Subtotal | 8,792,000 | 8,938,000 |  |
Amount included related to demand deposit overdrafts | 307,000 | 284,000 |  |
Consumer finance |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Subtotal | 475,028,000 |  |  |
Less allowance for credit losses | (25,187,000) | (25,969,000) | $ (25,868,000) | $ (24,791,000)
Consumer finance | Automobiles |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Subtotal | 408,010,000 | 411,112,000 |  |
Consumer finance | Marine and recreational vehicles |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Subtotal | $ 67,018,000 | $ 63,445,000 |  |

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