Loans and Leases - Nonperforming Loans and Leases (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Nonperforming Loans And Leases [Line Items]
Financing Receivable, Nonaccrual, Loans Held-For-Sale	$ 3,962	$ 0
Accruing Troubled Debt Restructured Loans And Lease Modifications, Loans Held-for-Sale	0	0
Financing Receivable, 90 Days Or More Past Due, Still Accruing, Loans Held-For-Sale	0	0
Financing Receivable Recorded Investment non Performing Loans And Leases, Leases Held-For-Sale	3,962	0
Total nonaccrual loans and lease	33,504	31,692
Loans and lease 90 days or more past due and accruing interest	750	1,392
Financing Receivable, Nonaccrual Including Loans Held-for-Sale	37,466	31,692
Accruing Troubled Debt Restructured Loans And Lease Modifications, Including Loans Held-For-Sale	52	53
Financing Receivable, 90 Days Or More Past Due, Still Accruing, Including Loans Held-For-Sale	750	1,392
Financing Receivable Recorded Investment, Non Performing Loans And Leases, Including Loans Held-For-Sale	38,268	33,137
Nonaccrual troubled debt restructured loans and lease modifications	2,300	14,100
Commercial Financial And Agricultural [Member]
Nonperforming Loans And Leases [Line Items]
Total nonaccrual loans and lease	1,246	2,827
Accruing troubled debt restructured loans and lease modifications	0	0
Loans and lease 90 days or more past due and accruing interest	476	50
Total nonperforming loans and leases	1,722	2,877
Real-Estate Commercial [Member]
Nonperforming Loans And Leases [Line Items]
Total nonaccrual loans and lease	26,264	22,739
Accruing troubled debt restructured loans and lease modifications	0	0
Loans and lease 90 days or more past due and accruing interest	137	945
Total nonperforming loans and leases	26,401	23,684
Real Estate Residential Secured For Business Purpose [Member]
Nonperforming Loans And Leases [Line Items]
Total nonaccrual loans and lease	3,045	2,786
Accruing troubled debt restructured loans and lease modifications	0	0
Loans and lease 90 days or more past due and accruing interest	31	0
Total nonperforming loans and leases	3,076	2,786
Real Estate-Residential Secured For Personal Purpose [Member]
Nonperforming Loans And Leases [Line Items]
Total nonaccrual loans and lease	2,160	2,086
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	2,160	2,086
Real Estate Home Equity Secured For Personal Purpose [Member]
Nonperforming Loans And Leases [Line Items]
Total nonaccrual loans and lease	783	1,047
Accruing troubled debt restructured loans and lease modifications	52	53
Loans and lease 90 days or more past due and accruing interest	0	0
Total nonperforming loans and leases	835	1,100
Loans to Individuals [Member]
Nonperforming Loans And Leases [Line Items]
Total 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	19	185
Total nonperforming loans and leases	19	185
Lease Financings [Member]
Nonperforming Loans And Leases [Line Items]
Total nonaccrual loans and lease	6	207
Accruing troubled debt restructured loans and lease modifications	0	0
Loans and lease 90 days or more past due and accruing interest	87	212
Total nonperforming loans and leases	$ 93	$ 419