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Loans - Loan Portfolio by Class (Details) - USD ($)	Mar. 31, 2025	Dec. 31, 2024
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	$ 1,943,326,000	$ 1,920,398,000
90+ Days Past Due and Accruing	111,000	410,000
Loans on nonaccrual status	2,164,000	947,000
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	13,569,000	16,826,000
Loans on nonaccrual status	94,000	117,000
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	1,597,000	3,748,000
90+ Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	2,041,000	1,116,000
Loans on nonaccrual status	1,930,000	706,000
Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	17,207,000	21,690,000
Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	1,926,119,000	1,898,708,000
Loans on nonaccrual status	140,000	124,000
Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	758,310,000	734,182,000
Commercial real estate | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross		26,000
Commercial real estate | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	21,000
Commercial real estate | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	21,000	26,000
Commercial real estate | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	758,289,000	734,156,000
Commercial business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	106,844,000	104,947,000
Commercial business | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	10,000	29,000
Commercial business | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	10,000	29,000
Commercial business | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	106,834,000	104,918,000
Construction - commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	121,140,000	132,717,000
Construction - commercial real estate | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	121,140,000	132,717,000
Land acquisition and development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	46,042,000	46,072,000
Land acquisition and development | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	46,042,000	46,072,000
Builder lines
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	42,720,000	35,605,000
Builder lines | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	42,720,000	35,605,000
Construction - consumer real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	21,188,000	18,799,000
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	21,188,000	18,052,000
Residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	308,549,000	308,809,000
90+ Days Past Due and Accruing	111,000	334,000
Loans on nonaccrual status	1,189,000	333,000
Residential mortgage | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	1,694,000	1,012,000
Residential mortgage | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross		1,076,000
Residential mortgage | 90+ Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	1,066,000	426,000
Residential mortgage | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	2,760,000	2,514,000
Residential mortgage | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	305,789,000	306,295,000
Equity lines
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	66,440,000	62,204,000
90+ Days Past Due and Accruing		76,000
Equity lines | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	328,000	85,000
Equity lines | 90+ Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross		76,000
Equity lines | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	328,000	161,000
Equity lines | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	66,112,000	62,043,000
Other consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	9,957,000	10,270,000
Other consumer | 30-59 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
Other consumer | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	9,957,000	10,261,000
Consumer finance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	462,136,000	466,793,000
Consumer finance | Automobiles
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	396,590,000	398,651,000
Loans on nonaccrual status	911,000	599,000
Consumer finance | Automobiles | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	11,438,000	14,703,000
Consumer finance | Automobiles | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	1,437,000	2,650,000
Consumer finance | Automobiles | 90+ Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	911,000	599,000
Consumer finance | Automobiles | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	13,786,000	17,952,000
Consumer finance | Automobiles | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	382,804,000	380,699,000
Consumer finance | Marine and recreational vehicles
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	65,546,000	68,142,000
Loans on nonaccrual status	64,000	15,000
Consumer finance | Marine and recreational vehicles | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	99,000	215,000
Consumer finance | Marine and recreational vehicles | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	139,000	22,000
Consumer finance | Marine and recreational vehicles | 90+ Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	64,000	15,000
Consumer finance | Marine and recreational vehicles | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	302,000	252,000
Consumer finance | Marine and recreational vehicles | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, gross	$ 65,244,000	$ 67,890,000

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