Loans, Allowance for Credit Losses, and Asset Quality Information - Schedule of Information of Loans Modified in Troubled Debt Restructuring (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($) contract	Sep. 30, 2021 USD ($) contract	Sep. 30, 2022 USD ($) contract loan	Sep. 30, 2021 USD ($) contract loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts	2	0	13	10
Pre- Modification Restructured Balances	$ 503	$ 0	$ 2,154	$ 2,926
Post- Modification Restructured Balances	$ 503	$ 0	$ 2,154	$ 2,923
Commercial, financial, and agricultural | TDRs – Accruing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract			1	0
Pre- Modification Restructured Balances			$ 161	$ 0
Post- Modification Restructured Balances			$ 161	$ 0
Commercial, financial, and agricultural | TDRs – Nonaccrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	1	0	4	3
Pre- Modification Restructured Balances	$ 327	$ 0	$ 627	$ 826
Post- Modification Restructured Balances	$ 327	$ 0	$ 627	$ 823
Real estate, commercial | Real estate – construction, land development & other land loans | TDRs – Accruing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract			1	0
Pre- Modification Restructured Balances			$ 131	$ 0
Post- Modification Restructured Balances			$ 131	$ 0
Real estate, commercial | Real estate – construction, land development & other land loans | TDRs – Nonaccrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract			0	1
Pre- Modification Restructured Balances			$ 0	$ 75
Post- Modification Restructured Balances			$ 0	$ 75
Real estate, commercial | Real estate – mortgage – commercial and other | TDRs – Accruing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract			0	1
Pre- Modification Restructured Balances			$ 0	$ 160
Post- Modification Restructured Balances			$ 0	$ 160
Real estate, commercial | Real estate – mortgage – commercial and other | TDRs – Nonaccrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract			2	3
Pre- Modification Restructured Balances			$ 784	$ 1,569
Post- Modification Restructured Balances			$ 784	$ 1,569
Real estate, mortgage | Real estate – mortgage – residential (1-4 family) first mortgages | TDRs – Accruing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract			1	1
Pre- Modification Restructured Balances			$ 36	$ 33
Post- Modification Restructured Balances			$ 36	$ 33
Real estate, mortgage | Real estate – mortgage – residential (1-4 family) first mortgages | TDRs – Nonaccrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract			1	1
Pre- Modification Restructured Balances			$ 36	$ 263
Post- Modification Restructured Balances			$ 36	$ 263
Real estate, mortgage | Real estate – mortgage – home equity loans / lines of credit | TDRs – Accruing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	1	0	3	0
Pre- Modification Restructured Balances	$ 176	$ 0	$ 379	$ 0
Post- Modification Restructured Balances	$ 176	$ 0	$ 379	$ 0
Real estate, mortgage | Real estate – mortgage – home equity loans / lines of credit | TDRs – Nonaccrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract			0	0
Pre- Modification Restructured Balances			$ 0	$ 0
Post- Modification Restructured Balances			$ 0	$ 0
Consumer loans | TDRs – Accruing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract			0	0
Pre- Modification Restructured Balances			$ 0	$ 0
Post- Modification Restructured Balances			$ 0	$ 0
Consumer loans | TDRs – Nonaccrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract			0	0
Pre- Modification Restructured Balances			$ 0	$ 0
Post- Modification Restructured Balances			$ 0	$ 0