Loans and Leases - Nonperforming Loans and Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Nonperforming Loans And Leases [Line Items]
Nonaccrual loans and lease	$ 30,876	$ 33,210
Accruing troubled debt restructured loans and lease modifications	51	51
Loans and lease 90 days or more past due and accruing interest	274	498
Total nonperforming loans and leases	31,201	33,759
Nonaccrual troubled debt restructured loans and lease modifications	830	758
Commercial Financial And Agricultural [Member]
Nonperforming Loans And Leases [Line Items]
Nonaccrual loans and lease	448	448
Accruing troubled debt restructured loans and lease modifications	0	0
Loans and lease 90 days or more past due and accruing interest	0	0
Total nonperforming loans and leases	448	448
Real-Estate Commercial [Member]
Nonperforming Loans And Leases [Line Items]
Nonaccrual loans and lease	26,411	27,900
Accruing troubled debt restructured loans and lease modifications	0	0
Loans and lease 90 days or more past due and accruing interest	0	0
Total nonperforming loans and leases	26,411	27,900
Real Estate Residential Secured For Business Purpose [Member]
Nonperforming Loans And Leases [Line Items]
Nonaccrual loans and lease	1,120	2,187
Accruing troubled debt restructured loans and lease modifications	0	0
Loans and lease 90 days or more past due and accruing interest	0	216
Total nonperforming loans and leases	1,120	2,403
Real Estate-Residential Secured For Personal Purpose [Member]
Nonperforming Loans And Leases [Line Items]
Nonaccrual loans and lease	2,259	2,049
Accruing troubled debt restructured loans and lease modifications	0	0
Loans and lease 90 days or more past due and accruing interest	0	0
Total nonperforming loans and leases	2,259	2,049
Real Estate Home Equity Secured For Personal Purpose [Member]
Nonperforming Loans And Leases [Line Items]
Nonaccrual loans and lease	489	545
Accruing troubled debt restructured loans and lease modifications	51	51
Loans and lease 90 days or more past due and accruing interest	0	0
Total nonperforming loans and leases	540	596
Loans to Individuals [Member]
Nonperforming Loans And Leases [Line Items]
Nonaccrual loans and lease	0	0
Accruing troubled debt restructured loans and lease modifications	0	0
Loans and lease 90 days or more past due and accruing interest	185	180
Total nonperforming loans and leases	185	180
Lease Financings [Member]
Nonperforming Loans And Leases [Line Items]
Nonaccrual loans and lease	149	81
Accruing troubled debt restructured loans and lease modifications	0	0
Loans and lease 90 days or more past due and accruing interest	89	102
Total nonperforming loans and leases	$ 238	$ 183