Loans And Allowance For Credit Losses (Modified Amortized Cost) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	$ 62,249	$ 129,048
Financing Receivable, Modified in Period, to Total Financing Receivables, Percentage	0.40%	0.80%
Extended Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	$ 60,389	$ 123,058
Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	773	3,383
Interest Rate Below Market Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	984	2,036
Interest/Fees Forgiven
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	72	485
Other Loan Restructuring
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	31	86
Commercial Portfolio Segment [Member] | Business
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	$ 3,792	$ 16,705
Financing Receivable, Modified in Period, to Total Financing Receivables, Percentage	0.10%	0.30%
Commercial Portfolio Segment [Member] | Business | Extended Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	$ 3,792	$ 16,705
Commercial Portfolio Segment [Member] | Business | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	0	0
Commercial Portfolio Segment [Member] | Business | Interest Rate Below Market Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	0	0
Commercial Portfolio Segment [Member] | Business | Interest/Fees Forgiven
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	0	0
Commercial Portfolio Segment [Member] | Business | Other Loan Restructuring
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	0	0
Commercial Portfolio Segment [Member] | Real estate - business
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	$ 56,552	$ 106,034
Financing Receivable, Modified in Period, to Total Financing Receivables, Percentage	1.60%	2.90%
Commercial Portfolio Segment [Member] | Real estate - business | Extended Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	$ 56,552	$ 106,034
Commercial Portfolio Segment [Member] | Real estate - business | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	0	0
Commercial Portfolio Segment [Member] | Real estate - business | Interest Rate Below Market Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	0	0
Commercial Portfolio Segment [Member] | Real estate - business | Interest/Fees Forgiven
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	0	0
Commercial Portfolio Segment [Member] | Real estate - business | Other Loan Restructuring
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	0	0
Personal Banking Portfolio Segment [Member] | Real estate - personal
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	$ 818	$ 3,602
Financing Receivable, Modified in Period, to Total Financing Receivables, Percentage	0.00%	0.10%
Personal Banking Portfolio Segment [Member] | Real estate - personal | Extended Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	$ 45	$ 289
Personal Banking Portfolio Segment [Member] | Real estate - personal | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	773	3,313
Personal Banking Portfolio Segment [Member] | Real estate - personal | Interest Rate Below Market Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	0	0
Personal Banking Portfolio Segment [Member] | Real estate - personal | Interest/Fees Forgiven
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	0	0
Personal Banking Portfolio Segment [Member] | Real estate - personal | Other Loan Restructuring
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	0	0
Personal Banking Portfolio Segment [Member] | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	$ 80	$ 255
Financing Receivable, Modified in Period, to Total Financing Receivables, Percentage	0.00%	0.00%
Personal Banking Portfolio Segment [Member] | Consumer | Extended Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	$ 0	$ 30
Personal Banking Portfolio Segment [Member] | Consumer | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	0	70
Personal Banking Portfolio Segment [Member] | Consumer | Interest Rate Below Market Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	49	69
Personal Banking Portfolio Segment [Member] | Consumer | Interest/Fees Forgiven
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	0	0
Personal Banking Portfolio Segment [Member] | Consumer | Other Loan Restructuring
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	31	86
Personal Banking Portfolio Segment [Member] | Consumer credit card
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	$ 1,007	$ 2,452
Financing Receivable, Modified in Period, to Total Financing Receivables, Percentage	0.20%	0.40%
Personal Banking Portfolio Segment [Member] | Consumer credit card | Extended Maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	$ 0	$ 0
Personal Banking Portfolio Segment [Member] | Consumer credit card | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	0	0
Personal Banking Portfolio Segment [Member] | Consumer credit card | Interest Rate Below Market Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	935	1,967
Personal Banking Portfolio Segment [Member] | Consumer credit card | Interest/Fees Forgiven
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	72	485
Personal Banking Portfolio Segment [Member] | Consumer credit card | Other Loan Restructuring
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	$ 0	$ 0