Credit Quality And Allowance For Credit Losses (Financial Effect of Loan Modifications) (Details)	12 Months Ended
Dec. 31, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	1 year 1 month 3 days
Weighted-Average Interest Rate Reduction	(1.49%)
Business loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	11 months 21 days
Weighted-Average Interest Rate Reduction	(1.35%)
Business loans \| Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	10 months 12 days
Weighted-Average Interest Rate Reduction	(2.01%)
Retail loans \| Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	12 years 1 month 12 days
Weighted-Average Interest Rate Reduction	(3.01%)
Real estate construction \| Business loans \| Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	9 months 9 days
Real estate construction \| Business loans \| Commercial \| Other business lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	9 months 9 days
Commercial mortgage \| Business loans \| Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	1 year 5 months 18 days
Weighted-Average Interest Rate Reduction	(0.68%)
Commercial mortgage \| Business loans \| Commercial \| Other business lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	1 year 5 months 18 days
Weighted-Average Interest Rate Reduction	(0.68%)
Home equity \| Retail loans \| Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	12 years 1 month 12 days
Weighted-Average Interest Rate Reduction	(3.01%)
Consumer \| Retail loans \| Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	12 years 1 month 12 days
Weighted-Average Interest Rate Reduction	(3.01%)

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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