Loans (Information By Class Related To Individually Impaired Loans) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		$ 305,973	$ 326,085	$ 305,973	$ 326,085
Unpaid Principal Balance		349,500	377,838	349,500	377,838
Related Allowance		49,614	56,525	49,614	56,525
Average Recorded Investment		312,649	337,301	313,034	343,935
Interest Income Recognized		1,760	1,718	4,898	5,086
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		52,653	50,583	52,653	50,583
Unpaid Principal Balance		63,330	65,465	63,330	65,465
Related Allowance		5,403	6,743	5,403	6,743
Average Recorded Investment		56,199	59,714	53,084	62,614
Interest Income Recognized		309	276	740	841
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		253,320	275,502	253,320	275,502
Unpaid Principal Balance		286,170	312,373	286,170	312,373
Related Allowance		44,211	49,782	44,211	49,782
Average Recorded Investment		256,450	277,587	259,950	281,321
Interest Income Recognized		1,451	1,442	4,158	4,245
Impaired Loans With No Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		13,127	8,054	13,127	8,054
Unpaid Principal Balance		20,666	16,655	20,666	16,655
Related Allowance		0	0	0	0
Average Recorded Investment		14,942	12,322	14,145	16,024
Interest Income Recognized		0	0	0	0
Impaired Loans With No Related Allowance Recorded [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		19,722	21,387	19,722	21,387
Unpaid Principal Balance		36,289	42,497	36,289	42,497
Related Allowance		0	0	0	0
Average Recorded Investment		19,711	22,663	19,725	23,894
Interest Income Recognized		0	0	0	0
Impaired Loans With Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		39,526	42,529	39,526	42,529
Unpaid Principal Balance		42,664	48,810	42,664	48,810
Related Allowance		5,403	6,743	5,403	6,743
Average Recorded Investment		41,257	47,392	38,939	46,590
Interest Income Recognized		309	276	740	841
Impaired Loans With Related Allowance Recorded [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		233,598	254,115	233,598	254,115
Unpaid Principal Balance		249,881	269,876	249,881	269,876
Related Allowance		44,211	49,782	44,211	49,782
Average Recorded Investment		236,739	254,924	240,225	257,427
Interest Income Recognized		1,451	1,442	4,158	4,245
General C I [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		13,127	5,586	13,127	5,586
Unpaid Principal Balance		20,666	7,266	20,666	7,266
Related Allowance		0	0	0	0
Average Recorded Investment		13,708	8,994	12,088	11,202
Interest Income Recognized		0	0	0	0
General C I [Member] | Impaired Loans With Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		32,982	21,319	32,982	21,319
Unpaid Principal Balance		34,915	25,515	34,915	25,515
Related Allowance		4,262	846	4,262	846
Average Recorded Investment		33,433	25,934	29,896	24,702
Interest Income Recognized		289	238	668	727
TRUPs [Member] | Impaired Loans With Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		3,242	13,369	3,242	13,369
Unpaid Principal Balance		3,700	13,700	3,700	13,700
Related Allowance		925	5,310	925	5,310
Average Recorded Investment		3,258	13,384	3,291	13,414
Interest Income Recognized		0	0	0	0
Income C R E [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		0	2,468	0	2,468
Unpaid Principal Balance		0	9,389	0	9,389
Related Allowance		0	0	0	0
Average Recorded Investment		1,234	3,328	2,057	4,631
Interest Income Recognized		0	0	0	0
Income C R E [Member] | Impaired Loans With Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		1,968	6,424	1,968	6,424
Unpaid Principal Balance		2,246	7,709	2,246	7,709
Related Allowance		113	496	113	496
Average Recorded Investment		3,211	6,606	4,376	6,962
Interest Income Recognized		15	32	55	95
Residential C R E [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment			0		0
Unpaid Principal Balance			0		0
Related Allowance			0		0
Average Recorded Investment			0		191
Interest Income Recognized			0		0
Residential C R E [Member] | Impaired Loans With Related Allowance Recorded [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		1,334	1,417	1,334	1,417
Unpaid Principal Balance		1,803	1,886	1,803	1,886
Related Allowance		103	91	103	91
Average Recorded Investment		1,355	1,468	1,376	1,512
Interest Income Recognized		5	6	17	19
Home Equity [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	[1]	11,359	11,000	11,359	11,000
Unpaid Principal Balance	[1]	24,541	28,486	24,541	28,486
Related Allowance	[1]	0	0	0	0
Average Recorded Investment	[1]	11,273	11,788	11,100	12,455
Interest Income Recognized	[1]	0	0	0	0
Home Equity [Member] | Impaired Loans With Related Allowance Recorded [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		86,967	89,199	86,967	89,199
Unpaid Principal Balance		89,500	91,382	89,500	91,382
Related Allowance		15,769	17,200	15,769	17,200
Average Recorded Investment		87,919	88,245	88,266	86,359
Interest Income Recognized		546	474	1,527	1,383
R E Installment Loans [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	[1]	4,084	4,404	4,084	4,404
Unpaid Principal Balance	[1]	5,094	5,756	5,094	5,756
Related Allowance	[1]	0	0	0	0
Average Recorded Investment	[1]	4,158	4,682	4,333	4,696
Interest Income Recognized	[1]	0	0	0	0
R E Installment Loans [Member] | Impaired Loans With Related Allowance Recorded [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		56,499	65,465	56,499	65,465
Unpaid Principal Balance		57,686	66,431	57,686	66,431
Related Allowance		13,692	16,718	13,692	16,718
Average Recorded Investment		57,775	66,367	58,890	68,274
Interest Income Recognized		357	352	1,019	1,010
Permanent Mortgage Portfolio Segment [Member] | Impaired Loans With No Related Allowance Recorded [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment	[1]	4,279	5,983	4,279	5,983
Unpaid Principal Balance	[1]	6,654	8,255	6,654	8,255
Related Allowance	[1]	0	0	0	0
Average Recorded Investment	[1]	4,280	6,193	4,292	6,743
Interest Income Recognized	[1]	0	0	0	0
Permanent Mortgage Portfolio Segment [Member] | Impaired Loans With Related Allowance Recorded [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		89,792	99,071	89,792	99,071
Unpaid Principal Balance		102,355	111,683	102,355	111,683
Related Allowance		14,611	15,696	14,611	15,696
Average Recorded Investment		90,697	99,913	92,716	102,341
Interest Income Recognized		544	613	1,602	1,841
Credit Card Other [Member] | Impaired Loans With Related Allowance Recorded [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded Investment		340	380	340	380
Unpaid Principal Balance		340	380	340	380
Related Allowance		139	168	139	168
Average Recorded Investment		348	399	353	453
Interest Income Recognized		$ 4	$ 3	$ 10	$ 11

[1] All discharged bankruptcy loans are charged down to an estimate of net realizable value and do not carry any allowance.