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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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+ References

No definition available.

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- Definition

Amount of financing receivable modified as troubled debt restructuring.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554

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