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Loans And Allowance For Credit Losses (Troubled Debt Restructurings by Type of Modification) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Restructured loans | $ 140,627 | $ 79,450
Performing/Accruing TDR Commercial [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Restructured loans | 117,740 | 55,934
Performing/AccruingTDR - Assistance programs [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Restructured loans | 7,804 | 8,365
Performing/Accruing TDR - Consumer Bankruptcy [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Restructured loans | 2,841 | 3,592
Performing/Accruing TDR - Other Consumer [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Restructured loans | 2,353 | 3,621
TDR Non-accrual loans [Member] |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Restructured loans | $ 9,889 | $ 7,938

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