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Loans - Loan Portfolio by Class (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	$ 1,920,398,000	$ 1,742,139,000	$ 1,635,718,000
90+ Days Past Due and Accruing	410,000	128,000
Loans on nonaccrual status	947,000	1,298,000
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	16,826,000	17,498,000
Loans on nonaccrual status	117,000
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	3,748,000	3,233,000
Loans on nonaccrual status		22,000
90+ Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	1,116,000	1,290,000
Loans on nonaccrual status	706,000	1,160,000
Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	21,690,000	22,021,000
Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	1,898,708,000	1,720,118,000
Loans on nonaccrual status	124,000	113,000
Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	734,182,000	668,122,000
Commercial real estate | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	26,000	92,000
Commercial real estate | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	26,000	92,000
Commercial real estate | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	734,156,000	668,030,000
Commercial business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	104,947,000	115,348,000
90+ Days Past Due and Accruing		1,000
Commercial business | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	29,000
Commercial business | 90+ Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross		1,000
Commercial business | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	29,000	1,000
Commercial business | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	104,918,000	115,347,000
Construction - commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	132,717,000	69,768,000
Construction - commercial real estate | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	132,717,000	69,768,000
Land acquisition and development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	46,072,000	29,064,000
Land acquisition and development | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	46,072,000	29,064,000
Builder lines
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	35,605,000	24,668,000
Builder lines | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	35,605,000	24,668,000
Construction - consumer real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	18,799,000	11,223,000
Construction - consumer real estate | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	747,000
Construction - consumer real estate | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	747,000
Construction - consumer real estate | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	18,052,000	11,223,000
Residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	308,809,000	293,256,000
90+ Days Past Due and Accruing	334,000	89,000
Loans on nonaccrual status	333,000	320,000
Residential mortgage | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	1,012,000	1,643,000
Residential mortgage | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	1,076,000	387,000
Residential mortgage | 90+ Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	426,000	273,000
Residential mortgage | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	2,514,000	2,303,000
Residential mortgage | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	306,295,000	290,953,000
Equity lines
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	62,204,000	51,592,000
90+ Days Past Due and Accruing	76,000	38,000
Loans on nonaccrual status		77,000
Equity lines | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	85,000	215,000
Equity lines | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross		103,000
Equity lines | 90+ Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	76,000	115,000
Equity lines | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	161,000	433,000
Equity lines | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	62,043,000	51,159,000
Other consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	10,270,000	10,588,000
Loans on nonaccrual status		9,000
Other consumer | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	9,000	3,000
Other consumer | 90+ Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross		9,000
Other consumer | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	9,000	12,000
Other consumer | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	10,261,000	10,576,000
Consumer finance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	466,793,000	468,510,000
Consumer finance | Automobiles
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	398,651,000	401,276,000
Loans on nonaccrual status	599,000	892,000
Consumer finance | Automobiles | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	14,703,000	15,263,000
Consumer finance | Automobiles | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	2,650,000	2,628,000
Consumer finance | Automobiles | 90+ Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	599,000	892,000
Consumer finance | Automobiles | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	17,952,000	18,783,000
Consumer finance | Automobiles | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	380,699,000	382,493,000
Consumer finance | Marine and recreational vehicles
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	68,142,000	67,234,000
Loans on nonaccrual status	15,000
Consumer finance | Marine and recreational vehicles | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	215,000	282,000
Consumer finance | Marine and recreational vehicles | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	22,000	115,000
Consumer finance | Marine and recreational vehicles | 90+ Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	15,000
Consumer finance | Marine and recreational vehicles | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	252,000	397,000
Consumer finance | Marine and recreational vehicles | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	$ 67,890,000	$ 66,837,000

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