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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Loans - Balance of Loans (Details) - USD ($)	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Exclude accrued interest receivable from the amortized cost basis of loans	$ 8,570,000	$ 8,270,000
Subtotal	1,991,665,000	1,920,398,000
Less allowance for credit losses	(39,578,000)	(40,087,000)	$ (40,343,000)	$ (39,651,000)
Loans, net	1,952,087,000	1,880,311,000
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	763,624,000	734,182,000
Commercial business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	110,932,000	104,947,000
Construction - commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	141,314,000	132,717,000
Land acquisition and development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	53,585,000	46,072,000
Builder lines
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	44,758,000	35,605,000
Construction - consumer real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	23,843,000	18,799,000
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	313,273,000	308,809,000
Equity lines
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	68,519,000	62,204,000
Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	10,427,000	10,270,000
Amount included related to demand deposit overdrafts	260,000	255,000
Consumer finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	461,390,000	466,793,000
Less allowance for credit losses	(22,385,000)	(22,708,000)	$ (23,423,000)	$ (23,578,000)
Consumer finance \| Automobiles
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	397,365,000	398,651,000
Consumer finance \| Marine and recreational vehicles
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	$ 64,025,000	$ 68,142,000