Loans and Allowance for Loan Losses - Credit Quality (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	$ 1,491,997	$ 1,302,133
Watch
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	64,704	69,056
Substandard
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	13,065	12,012
Performing TDRs
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	1,588	1,795
Non-accrual loans
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	17,348	25,459
Total
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	96,705	108,322
Commercial, Financial, and Agricultural
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	248,913	217,214
Commercial, Financial, and Agricultural | Watch
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	8,035	9,219
Commercial, Financial, and Agricultural | Substandard
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	7,064	6,284
Commercial, Financial, and Agricultural | Performing TDRs
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	177	188
Commercial, Financial, and Agricultural | Non-accrual loans
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	173	153
Commercial, Financial, and Agricultural | Total
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	15,449	15,844
Real Estate Construction - Residential & Real Estate Mortgage - Residential | Construction
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	25,243	27,920
Real Estate Construction - Residential & Real Estate Mortgage - Residential | Construction | Watch
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	0	0
Real Estate Construction - Residential & Real Estate Mortgage - Residential | Construction | Substandard
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	0	0
Real Estate Construction - Residential & Real Estate Mortgage - Residential | Construction | Performing TDRs
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	0	0
Real Estate Construction - Residential & Real Estate Mortgage - Residential | Construction | Non-accrual loans
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	0	0
Real Estate Construction - Residential & Real Estate Mortgage - Residential | Construction | Total
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	0	0
Real Estate Construction - Residential & Real Estate Mortgage - Residential | Mortgage
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	343,661	279,346
Real Estate Construction - Residential & Real Estate Mortgage - Residential | Mortgage | Watch
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	6,447	12,185
Real Estate Construction - Residential & Real Estate Mortgage - Residential | Mortgage | Substandard
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	513	750
Real Estate Construction - Residential & Real Estate Mortgage - Residential | Mortgage | Performing TDRs
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	1,098	1,262
Real Estate Construction - Residential & Real Estate Mortgage - Residential | Mortgage | Non-accrual loans
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	1,083	1,129
Real Estate Construction - Residential & Real Estate Mortgage - Residential | Mortgage | Total
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	9,141	15,326
Real Estate Construction - Commercial & Real Estate Mortgage - Commercial | Construction
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	133,186	91,369
Real Estate Construction - Commercial & Real Estate Mortgage - Commercial | Construction | Watch
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	2,269	4,304
Real Estate Construction - Commercial & Real Estate Mortgage - Commercial | Construction | Substandard
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	3,358	2,673
Real Estate Construction - Commercial & Real Estate Mortgage - Commercial | Construction | Performing TDRs
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	0	0
Real Estate Construction - Commercial & Real Estate Mortgage - Commercial | Construction | Non-accrual loans
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	91	105
Real Estate Construction - Commercial & Real Estate Mortgage - Commercial | Construction | Total
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	5,718	7,082
Real Estate Construction - Commercial & Real Estate Mortgage - Commercial | Mortgage
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	717,192	663,256
Real Estate Construction - Commercial & Real Estate Mortgage - Commercial | Mortgage | Watch
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	47,953	43,348
Real Estate Construction - Commercial & Real Estate Mortgage - Commercial | Mortgage | Substandard
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	2,130	2,305
Real Estate Construction - Commercial & Real Estate Mortgage - Commercial | Mortgage | Performing TDRs
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	313	328
Real Estate Construction - Commercial & Real Estate Mortgage - Commercial | Mortgage | Non-accrual loans
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	15,995	24,029
Real Estate Construction - Commercial & Real Estate Mortgage - Commercial | Mortgage | Total
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	66,391	70,010
Installment and Other Consumer
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	23,802	23,028
Installment and Other Consumer | Watch
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	0	0
Installment and Other Consumer | Substandard
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	0	0
Installment and Other Consumer | Performing TDRs
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	0	17
Installment and Other Consumer | Non-accrual loans
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	6	43
Installment and Other Consumer | Total
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	$ 6	$ 60