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Allowance for Loan Losses - Credit Quality Indicators (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Allowance for loan losses
Loans, excluding consumer finance	$ 1,041,866,000	$ 1,040,154,000
Pass
Allowance for loan losses
Loans, excluding consumer finance	1,029,849,000	1,004,998,000
Special Mention
Allowance for loan losses
Loans, excluding consumer finance	2,700,000	20,526,000
Substandard
Allowance for loan losses
Loans, excluding consumer finance	6,773,000	11,628,000
Substandard Nonaccrual
Allowance for loan losses
Loans, excluding consumer finance	2,544,000	3,002,000
Doubtful
Allowance for loan losses
Loans, excluding consumer finance	0	0
Real Estate Residential Mortgage
Allowance for loan losses
Loans, excluding consumer finance	217,016,000	218,298,000
Real Estate Residential Mortgage | Pass
Allowance for loan losses
Loans, excluding consumer finance	215,432,000	215,712,000
Real Estate Residential Mortgage | Special Mention
Allowance for loan losses
Loans, excluding consumer finance	664,000	1,715,000
Real Estate Residential Mortgage | Substandard
Allowance for loan losses
Loans, excluding consumer finance	605,000	595,000
Real Estate Residential Mortgage | Substandard Nonaccrual
Allowance for loan losses
Loans, excluding consumer finance	315,000	276,000
Real Estate Construction | Construction lending
Allowance for loan losses
Loans, excluding consumer finance	39,252,000	49,659,000
Real Estate Construction | Construction lending | Pass
Allowance for loan losses
Loans, excluding consumer finance	39,252,000	49,659,000
Real Estate Construction | Consumer lot lending
Allowance for loan losses
Loans, excluding consumer finance	18,243,000	12,488,000
Real Estate Construction | Consumer lot lending | Pass
Allowance for loan losses
Loans, excluding consumer finance	18,243,000	12,488,000
Commercial, Financial & Agricultural | Commercial real estate lending
Allowance for loan losses
Loans, excluding consumer finance	527,913,000	441,903,000
Commercial, Financial & Agricultural | Commercial real estate lending | Pass
Allowance for loan losses
Loans, excluding consumer finance	519,938,000	415,506,000
Commercial, Financial & Agricultural | Commercial real estate lending | Special Mention
Allowance for loan losses
Loans, excluding consumer finance	1,989,000	15,507,000
Commercial, Financial & Agricultural | Commercial real estate lending | Substandard
Allowance for loan losses
Loans, excluding consumer finance	5,986,000	10,890,000
Commercial, Financial & Agricultural | Land acquisition & development lending
Allowance for loan losses
Loans, excluding consumer finance	27,609,000	37,724,000
Commercial, Financial & Agricultural | Land acquisition & development lending | Pass
Allowance for loan losses
Loans, excluding consumer finance	27,609,000	37,724,000
Commercial, Financial & Agricultural | Builder line lending
Allowance for loan losses
Loans, excluding consumer finance	30,499,000	18,194,000
Commercial, Financial & Agricultural | Builder line lending | Pass
Allowance for loan losses
Loans, excluding consumer finance	30,499,000	18,194,000
Commercial, Financial & Agricultural | Commercial business lending
Allowance for loan losses
Loans, excluding consumer finance	131,709,000	202,394,000
Commercial, Financial & Agricultural | Commercial business lending | Pass
Allowance for loan losses
Loans, excluding consumer finance	129,587,000	196,743,000
Commercial, Financial & Agricultural | Commercial business lending | Special Mention
Allowance for loan losses
Loans, excluding consumer finance		3,124,000
Commercial, Financial & Agricultural | Commercial business lending | Substandard
Allowance for loan losses
Loans, excluding consumer finance		99,000
Commercial, Financial & Agricultural | Commercial business lending | Substandard Nonaccrual
Allowance for loan losses
Loans, excluding consumer finance	2,122,000	2,428,000
Equity lines
Allowance for loan losses
Loans, excluding consumer finance	41,345,000	48,466,000
Equity lines | Pass
Allowance for loan losses
Loans, excluding consumer finance	41,013,000	48,140,000
Equity lines | Special Mention
Allowance for loan losses
Loans, excluding consumer finance	47,000	132,000
Equity lines | Substandard
Allowance for loan losses
Loans, excluding consumer finance	181,000	3,000
Equity lines | Substandard Nonaccrual
Allowance for loan losses
Loans, excluding consumer finance	104,000	191,000
Consumer
Allowance for loan losses
Loans, excluding consumer finance	8,280,000	11,028,000
Consumer | Pass
Allowance for loan losses
Loans, excluding consumer finance	8,276,000	10,832,000
Consumer | Special Mention
Allowance for loan losses
Loans, excluding consumer finance		48,000
Consumer | Substandard
Allowance for loan losses
Loans, excluding consumer finance	1,000	41,000
Consumer | Substandard Nonaccrual
Allowance for loan losses
Loans, excluding consumer finance	$ 3,000	$ 107,000

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Amount before allowance of loans and leases held in portfolio, excluding consumer finance loans.

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