Loans And Allowance For Credit Losses (Troubled Debt Restructurings by Type of Modification) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring	$ 80,215	$ 79,450
Performing/Accruing TDR - Commercial [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring	57,918	55,934
Performing/Accruing TDR - Assistance programs [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring	8,340	8,365
Performing/Accruing TDR - Consumer Bankruptcy [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring	3,264	3,592
Performing/Accruing TDR - Other Consumer [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring	3,202	3,621
TDR Non-accrual loans [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring	$ 7,491	$ 7,938