Loans, Allowance for Credit Losses, and Asset Quality Information - Schedule of Nonaccrual Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual Loans with No Allowance	$ 13,351	$ 12,948
Nonaccrual Loans with an Allowance	20,109	21,748
Total Nonaccrual Loans	33,460	34,696
Commercial, financial, and agricultural
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual Loans with No Allowance	3,911	3,947
Nonaccrual Loans with an Allowance	8,661	8,205
Total Nonaccrual Loans	12,572	12,152
Real estate, commercial | Real estate – construction, land development & other land loans
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual Loans with No Allowance	928	495
Nonaccrual Loans with an Allowance	126	137
Total Nonaccrual Loans	1,054	632
Real estate, commercial | Real estate – mortgage – commercial and other
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual Loans with No Allowance	8,351	7,648
Nonaccrual Loans with an Allowance	6,865	8,583
Total Nonaccrual Loans	15,216	16,231
Real estate, mortgage | Real estate – mortgage – residential (1-4 family) first mortgages
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual Loans with No Allowance	161	858
Nonaccrual Loans with an Allowance	3,559	4,040
Total Nonaccrual Loans	3,720	4,898
Real estate, mortgage | Real estate – mortgage – home equity loans / lines of credit
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual Loans with No Allowance	0	0
Nonaccrual Loans with an Allowance	807	694
Total Nonaccrual Loans	807	694
Consumer loans
Loans and Leases Receivable Disclosure [Line Items]
Nonaccrual Loans with No Allowance	0	0
Nonaccrual Loans with an Allowance	91	89
Total Nonaccrual Loans	$ 91	$ 89