Loans and Leases - Nonaccrual (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual With No ACL	$ 33,014	$ 30,594
Nonaccrual With ACL	490	1,098
Total nonaccrual loans and lease	33,504	31,692
Loans 90 Days or more Past Due and Accruing Interest	750	1,392
Commercial Financial And Agricultural [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual With No ACL	887	2,187
Nonaccrual With ACL	359	640
Total nonaccrual loans and lease	1,246	2,827
Loans 90 Days or more Past Due and Accruing Interest	476	50
Real-Estate Commercial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual With No ACL	26,264	22,739
Nonaccrual With ACL	0	0
Total nonaccrual loans and lease	26,264	22,739
Loans 90 Days or more Past Due and Accruing Interest	137	945
Real Estate Residential Secured For Business Purpose [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual With No ACL	3,045	2,663
Nonaccrual With ACL	0	123
Total nonaccrual loans and lease	3,045	2,786
Loans 90 Days or more Past Due and Accruing Interest	31	0
Real Estate Residential Secured For Personal Purpose [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual With No ACL	2,035	1,958
Nonaccrual With ACL	125	128
Total nonaccrual loans and lease	2,160	2,086
Loans 90 Days or more Past Due and Accruing Interest	0	0
Real Estate Home Equity Secured For Personal Purpose [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual With No ACL	783	1,047
Nonaccrual With ACL	0	0
Total nonaccrual loans and lease	783	1,047
Loans 90 Days or more Past Due and Accruing Interest	0	0
Loans to Individuals [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual With No ACL	0	0
Nonaccrual With ACL	0	0
Total nonaccrual loans and lease	0	0
Loans 90 Days or more Past Due and Accruing Interest	19	185
Lease Financings [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual With No ACL	0	0
Nonaccrual With ACL	6	207
Total nonaccrual loans and lease	6	207
Loans 90 Days or more Past Due and Accruing Interest	$ 87	$ 212