Loans, Troubled Debt Restructurings Performing and Nonaccrual (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	$ 41,935	$ 52,092
Nonaccrual Restructured Loans(a)	17,237	20,190
Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	11,569	12,713
Nonaccrual Restructured Loans(a)	1,699	6,967
Commercial real estate — owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	1,225	1,711
Nonaccrual Restructured Loans(a)	0	0
Commercial real estate — investor
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	13,306	26,435
Nonaccrual Restructured Loans(a)	213	225
Real estate construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	253	260
Nonaccrual Restructured Loans(a)	108	111
Residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	12,227	7,825
Nonaccrual Restructured Loans(a)	14,029	11,509
Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	2,451	1,957
Nonaccrual Restructured Loans(a)	1,189	1,379
Other consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Performing Restructured Loans	904	1,191
Nonaccrual Restructured Loans(a)	$ 0	$ 0