Loans and Leases - Nonperforming Loans and Leases (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Nonperforming Loans And Leases [Line Items]
Nonaccrual loans and lease	$ 13,355	$ 33,210
Accruing troubled debt restructured loans and lease modifications	50	51
Loans and lease 90 days or more past due and accruing interest	2,784	498
Total nonperforming loans and leases	16,189	33,759
Nonaccrual troubled debt restructured loans and lease modifications	808	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	9,137	27,900
Accruing troubled debt restructured loans and lease modifications	0	0
Loans and lease 90 days or more past due and accruing interest	2,561	0
Total nonperforming loans and leases	11,698	27,900
Real Estate Residential Secured For Business Purpose [Member]
Nonperforming Loans And Leases [Line Items]
Nonaccrual loans and lease	961	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	961	2,403
Real Estate-Residential Secured For Personal Purpose [Member]
Nonperforming Loans And Leases [Line Items]
Nonaccrual loans and lease	2,202	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	2,202	2,049
Real Estate Home Equity Secured For Personal Purpose [Member]
Nonperforming Loans And Leases [Line Items]
Nonaccrual loans and lease	394	545
Accruing troubled debt restructured loans and lease modifications	50	51
Loans and lease 90 days or more past due and accruing interest	39	0
Total nonperforming loans and leases	483	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	90	180
Total nonperforming loans and leases	90	180
Lease Financings [Member]
Nonperforming Loans And Leases [Line Items]
Nonaccrual loans and lease	213	81
Accruing troubled debt restructured loans and lease modifications	0	0
Loans and lease 90 days or more past due and accruing interest	94	102
Total nonperforming loans and leases	307	183
Real-Estate Construction [Member]
Nonperforming Loans And Leases [Line Items]
Nonaccrual loans and lease	$ 0	$ 0