Loans And Allowance for Credit Losses (Credit Quality Indicators Personal Banking Loan Portfolio) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Loans charged off	$ 40,168	$ 29,242
Personal Banking Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	984,834	1,087,509
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	794,378	968,994
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	794,244	991,093
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	839,508	397,621
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	313,808	170,158
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	650,720	634,299
Revolving Loans Amortized Cost Basis	1,642,881	1,623,656
Financing Receivable, before Allowance for Credit Loss	6,020,373	5,873,330
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	4,729
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	2,909
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	1,939
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	770
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	376
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	393
Financing Receivable, Revolving, Writeoff	25,167
Loans charged off	36,283	27,762
Personal Banking Portfolio Segment [Member] | Current to 90 Days Past Due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	981,124	1,086,449
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	792,257	967,776
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	791,661	989,500
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	838,650	397,313
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	313,553	168,401
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	647,741	630,635
Revolving Loans Amortized Cost Basis	1,630,592	1,616,565
Financing Receivable, before Allowance for Credit Loss	5,995,578	5,856,639
Personal Banking Portfolio Segment [Member] | Over 90 days past due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	3,710	1,060
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,860	1,218
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	2,416	1,541
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	858	139
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	98	1,655
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,911	2,621
Revolving Loans Amortized Cost Basis	10,312	7,091
Financing Receivable, before Allowance for Credit Loss	21,165	15,325
Personal Banking Portfolio Segment [Member] | Non-Accrual [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	261	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	167	52
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	169
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	157	102
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,068	1,043
Revolving Loans Amortized Cost Basis	1,977	0
Financing Receivable, before Allowance for Credit Loss	3,630	1,366
Personal Banking Portfolio Segment [Member] | Real Estate - Personal [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	459,022	535,797
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	454,064	590,625
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	535,702	785,041
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	712,276	290,830
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	257,360	133,795
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	598,997	571,816
Revolving Loans Amortized Cost Basis	8,620	10,174
Financing Receivable, before Allowance for Credit Loss	3,026,041	2,918,078
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	18
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	23
Financing Receivable, Revolving, Writeoff	0
Loans charged off	41
Personal Banking Portfolio Segment [Member] | Real Estate - Personal [Member] | Current to 90 Days Past Due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	455,703	535,283
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	452,153	589,658
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	533,313	783,651
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	711,442	290,580
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	257,159	132,305
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	596,439	568,380
Revolving Loans Amortized Cost Basis	8,620	10,174
Financing Receivable, before Allowance for Credit Loss	3,014,829	2,910,031
Personal Banking Portfolio Segment [Member] | Real Estate - Personal [Member] | Over 90 days past due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	3,319	514
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,650	967
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	2,222	1,338
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	834	81
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	44	1,388
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,490	2,393
Revolving Loans Amortized Cost Basis	0	0
Financing Receivable, before Allowance for Credit Loss	9,559	6,681
Personal Banking Portfolio Segment [Member] | Real Estate - Personal [Member] | Non-Accrual [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	261	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	167	52
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	169
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	157	102
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,068	1,043
Revolving Loans Amortized Cost Basis	0	0
Financing Receivable, before Allowance for Credit Loss	1,653	1,366
Personal Banking Portfolio Segment [Member] | Consumer Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	519,010	536,755
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	340,314	378,369
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	258,542	206,052
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	127,232	106,791
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	56,448	36,363
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	51,723	62,483
Revolving Loans Amortized Cost Basis	724,454	732,275
Financing Receivable, before Allowance for Credit Loss	2,077,723	2,059,088
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	926
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	2,891
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	1,939
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	770
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	376
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	370
Financing Receivable, Revolving, Writeoff	1,051
Loans charged off	8,323
Personal Banking Portfolio Segment [Member] | Consumer Loan [Member] | Current to 90 Days Past Due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	518,619	536,429
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	340,104	378,118
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	258,348	205,849
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	127,208	106,733
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	56,394	36,096
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	51,302	62,255
Revolving Loans Amortized Cost Basis	722,595	731,436
Financing Receivable, before Allowance for Credit Loss	2,074,570	2,056,916
Personal Banking Portfolio Segment [Member] | Consumer Loan [Member] | Over 90 days past due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	391	326
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	210	251
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	194	203
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	24	58
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	54	267
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	421	228
Revolving Loans Amortized Cost Basis	1,859	839
Financing Receivable, before Allowance for Credit Loss	3,153	2,172
Personal Banking Portfolio Segment [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	319,894	297,207
Financing Receivable, before Allowance for Credit Loss	319,894	297,207
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Revolving, Writeoff	11
Loans charged off	11
Personal Banking Portfolio Segment [Member] | Revolving Home Equity [Member] | Current to 90 Days Past Due [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	317,047	296,504
Financing Receivable, before Allowance for Credit Loss	317,047	296,504
Personal Banking Portfolio Segment [Member] | Revolving Home Equity [Member] | Over 90 days past due [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	870	703
Financing Receivable, before Allowance for Credit Loss	870	703
Personal Banking Portfolio Segment [Member] | Revolving Home Equity [Member] | Non-Accrual [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Revolving Loans Amortized Cost Basis	1,977
Financing Receivable, before Allowance for Credit Loss	1,977
Personal Banking Portfolio Segment [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	589,913	584,000
Financing Receivable, before Allowance for Credit Loss	589,913	584,000
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Revolving, Writeoff	24,105
Loans charged off	24,105
Personal Banking Portfolio Segment [Member] | Consumer Credit Card [Member] | Current to 90 Days Past Due [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	582,330	578,451
Financing Receivable, before Allowance for Credit Loss	582,330	578,451
Personal Banking Portfolio Segment [Member] | Consumer Credit Card [Member] | Over 90 days past due [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	7,583	5,549
Financing Receivable, before Allowance for Credit Loss	7,583	5,549
Personal Banking Portfolio Segment [Member] | Overdrafts [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	6,802	14,957
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	6,802	14,957
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	3,803
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Revolving, Writeoff	0
Loans charged off	3,803
Personal Banking Portfolio Segment [Member] | Overdrafts [Member] | Current to 90 Days Past Due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	6,802	14,737
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	6,802	14,737
Personal Banking Portfolio Segment [Member] | Overdrafts [Member] | Over 90 days past due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	220
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	$ 0	$ 220