Loans And Allowance for Credit Losses (Credit Quality Indicators Personal Banking Loan Portfolio) (Details) - Personal Banking Portfolio Segment [Member] - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	$ 1,087,509	$ 1,268,784
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	968,994	1,238,890
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	991,093	547,174
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	397,621	237,855
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	170,158	196,963
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	634,299	632,236
Revolving Loans Amortized Cost Basis	1,623,656	1,573,819
Financing Receivable, before Allowance for Credit Loss	5,873,330	5,695,721
Real Estate - Personal [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	535,797	690,306
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	590,625	889,781
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	785,041	354,841
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	290,830	157,718
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	133,795	149,488
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	571,816	553,797
Revolving Loans Amortized Cost Basis	10,174	9,470
Financing Receivable, before Allowance for Credit Loss	2,918,078	2,805,401
Consumer Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	536,755	571,738
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	378,369	349,109
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	206,052	192,333
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	106,791	80,137
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	36,363	47,475
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	62,483	78,439
Revolving Loans Amortized Cost Basis	732,275	712,994
Financing Receivable, before Allowance for Credit Loss	2,059,088	2,032,225
Revolving Home Equity [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Revolving Loans Amortized Cost Basis	297,207	275,945
Financing Receivable, before Allowance for Credit Loss	297,207	275,945
Consumer Credit Card [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Revolving Loans Amortized Cost Basis	584,000	575,410
Financing Receivable, before Allowance for Credit Loss	584,000	575,410
Overdrafts [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	14,957	6,740
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Revolving Loans Amortized Cost Basis	0	0
Financing Receivable, before Allowance for Credit Loss	14,957	6,740
Current to 90 Days Past Due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,086,449	1,268,253
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	967,776	1,237,405
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	989,500	546,368
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	397,313	237,372
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	168,401	196,792
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	630,635	629,548
Revolving Loans Amortized Cost Basis	1,616,565	1,567,103
Financing Receivable, before Allowance for Credit Loss	5,856,639	5,682,841
Current to 90 Days Past Due [Member] | Real Estate - Personal [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	535,283	690,058
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	589,658	888,631
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	783,651	354,292
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	290,580	157,485
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	132,305	149,391
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	568,380	551,460
Revolving Loans Amortized Cost Basis	10,174	9,470
Financing Receivable, before Allowance for Credit Loss	2,910,031	2,800,787
Current to 90 Days Past Due [Member] | Consumer Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	536,429	571,455
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	378,118	348,774
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	205,849	192,076
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	106,733	79,887
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	36,096	47,401
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	62,255	78,088
Revolving Loans Amortized Cost Basis	731,436	712,333
Financing Receivable, before Allowance for Credit Loss	2,056,916	2,030,014
Current to 90 Days Past Due [Member] | Revolving Home Equity [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Revolving Loans Amortized Cost Basis	296,504	275,144
Financing Receivable, before Allowance for Credit Loss	296,504	275,144
Current to 90 Days Past Due [Member] | Consumer Credit Card [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Revolving Loans Amortized Cost Basis	578,451	570,156
Financing Receivable, before Allowance for Credit Loss	578,451	570,156
Current to 90 Days Past Due [Member] | Overdrafts [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	14,737	6,740
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Revolving Loans Amortized Cost Basis	0	0
Financing Receivable, before Allowance for Credit Loss	14,737	6,740
Over 90 days past due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,060	416
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,218	1,485
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,541	555
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	139	374
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	1,655	171
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	2,621	1,532
Revolving Loans Amortized Cost Basis	7,091	6,716
Financing Receivable, before Allowance for Credit Loss	15,325	11,249
Over 90 days past due [Member] | Real Estate - Personal [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	514	133
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	967	1,150
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,338	298
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	81	124
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	1,388	97
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	2,393	1,181
Revolving Loans Amortized Cost Basis	0	0
Financing Receivable, before Allowance for Credit Loss	6,681	2,983
Over 90 days past due [Member] | Consumer Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	326	283
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	251	335
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	203	257
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	58	250
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	267	74
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	228	351
Revolving Loans Amortized Cost Basis	839	661
Financing Receivable, before Allowance for Credit Loss	2,172	2,211
Over 90 days past due [Member] | Revolving Home Equity [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Revolving Loans Amortized Cost Basis	703	801
Financing Receivable, before Allowance for Credit Loss	703	801
Over 90 days past due [Member] | Consumer Credit Card [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Revolving Loans Amortized Cost Basis	5,549	5,254
Financing Receivable, before Allowance for Credit Loss	5,549	5,254
Over 90 days past due [Member] | Overdrafts [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	220	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Revolving Loans Amortized Cost Basis	0	0
Financing Receivable, before Allowance for Credit Loss	220	0
Non-Accrual [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	115
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	52	251
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	169	109
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	102	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,043	1,156
Revolving Loans Amortized Cost Basis	0	0
Financing Receivable, before Allowance for Credit Loss	1,366	1,631
Non-Accrual [Member] | Real Estate - Personal [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	115
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	52	251
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	169	109
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	102	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,043	1,156
Revolving Loans Amortized Cost Basis	0	0
Financing Receivable, before Allowance for Credit Loss	$ 1,366	$ 1,631