Loans (Schedule Of Investment In Impaired Loans, Allowance For Loan Loss, Unpaid Impaired Loans And Interest Income Recognized On Impaired Loans) (Details) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Recorded Investment	$ 601,557	$ 573,138	$ 601,557	$ 573,138
Unpaid Principal Balance	764,717	835,778	764,717	835,778
Related Allowance	99,463	102,208	99,463	102,208
Average Recorded Investment	610,450	613,400	612,204	568,700
Interest Income	1,793	700	3,118	1,300
General C&I [Member] | Impaired Loans with No Related Allowance Recorded [Member] | Commercial [Member]
Recorded Investment	96,198	25,552	96,198	25,552
Unpaid Principal Balance	117,608	32,233	117,608	32,233
Average Recorded Investment	89,618		70,328
Interest Income	232		489
General C&I [Member] | Impaired Loans with Related Allowance Recorded [Member] | Commercial [Member]
Recorded Investment	46,690	82,373	46,690	82,373
Unpaid Principal Balance	53,258	118,120	53,258	118,120
Related Allowance	23,980	38,069	23,980	38,069
Average Recorded Investment	57,790		81,482
Interest Income	81		140
TRUPs [Member] | Impaired Loans with No Related Allowance Recorded [Member] | Commercial [Member]
Recorded Investment	52,742	36,756	52,742	36,756
Unpaid Principal Balance	57,000	42,700	57,000	42,700
Average Recorded Investment	43,857		39,074
Interest Income
TRUPs [Member] | Impaired Loans with Related Allowance Recorded [Member] | Commercial [Member]
Recorded Investment	27,266	27,266	27,266	27,266
Unpaid Principal Balance	30,000	30,000	30,000	30,000
Related Allowance	26,693	14,022	26,693	14,022
Average Recorded Investment	27,266		27,266
Interest Income
Income CRE [Member] | Impaired Loans with No Related Allowance Recorded [Member] | Commercial [Member]
Recorded Investment	96,935	98,816	96,935	98,816
Unpaid Principal Balance	173,878	190,519	173,878	190,519
Average Recorded Investment	110,102		102,411
Interest Income	392		531
Income CRE [Member] | Impaired Loans with Related Allowance Recorded [Member] | Commercial [Member]
Recorded Investment	12,129	45,841	12,129	45,841
Unpaid Principal Balance	12,314	52,735	12,314	52,735
Related Allowance	3,550	12,107	3,550	12,107
Average Recorded Investment	11,866		23,335
Interest Income	11		11
Residential CRE [Member] | Impaired Loans with No Related Allowance Recorded [Member] | Commercial [Member]
Recorded Investment	42,920	96,584	42,920	96,584
Unpaid Principal Balance	93,746	202,797	93,746	202,797
Average Recorded Investment	53,571		51,161
Interest Income	269		344
Residential CRE [Member] | Impaired Loans with Related Allowance Recorded [Member] | Commercial [Member]
Recorded Investment	22,395	53,595	22,395	53,595
Unpaid Principal Balance	22,631	60,319	22,631	60,319
Related Allowance	6,247	16,051	6,247	16,051
Average Recorded Investment	22,351		31,354
Interest Income
HELOC [Member] | Impaired Loans with Related Allowance Recorded [Member] | Retail [Member]
Recorded Investment	36,617	17,493	36,617	17,493
Unpaid Principal Balance	36,617	17,493	36,617	17,493
Related Allowance	11,818	5,025	11,818	5,025
Average Recorded Investment	33,507		30,996
Interest Income	180		321
R/E Installment Loans [Member] | Impaired Loans with Related Allowance Recorded [Member] | Retail [Member]
Recorded Investment	54,500	23,844	54,500	23,844
Unpaid Principal Balance	54,500	23,844	54,500	23,844
Related Allowance	11,837	6,849	11,837	6,849
Average Recorded Investment	51,337		49,450
Interest Income	182		344
Permanent Mortgage [Member] | Impaired Loans with Related Allowance Recorded [Member] | Retail [Member]
Recorded Investment	111,979	64,384	111,979	64,384
Unpaid Principal Balance	111,979	64,384	111,979	64,384
Related Allowance	14,586	9,793	14,586	9,793
Average Recorded Investment	107,935		104,372
Interest Income	434		914
OTC, Credit Card, & Other [Member] | Impaired Loans with Related Allowance Recorded [Member] | Retail [Member]
Recorded Investment		634		634
Unpaid Principal Balance		634		634
Related Allowance		292		292
Credit Card, & Other [Member] | Impaired Loans with Related Allowance Recorded [Member] | Retail [Member]
Recorded Investment	1,186		1,186
Unpaid Principal Balance	1,186		1,186
Related Allowance	752		752
Average Recorded Investment	1,250		975
Interest Income	12		24
Impaired Loans with No Related Allowance Recorded [Member] | Commercial [Member]
Recorded Investment	288,795	257,708	288,795	257,708
Unpaid Principal Balance	442,232	468,249	442,232	468,249
Average Recorded Investment	297,148		262,974
Interest Income	893		1,364
Impaired Loans with Related Allowance Recorded [Member] | Commercial [Member]
Recorded Investment	108,480	209,075	108,480	209,075
Unpaid Principal Balance	118,203	261,174	118,203	261,174
Related Allowance	60,470	80,249	60,470	80,249
Average Recorded Investment	119,273		163,437
Interest Income	92		151
Impaired Loans with Related Allowance Recorded [Member] | Retail [Member]
Recorded Investment	204,282	106,355	204,282	106,355
Unpaid Principal Balance	204,282	106,355	204,282	106,355
Related Allowance	38,993	21,959	38,993	21,959
Average Recorded Investment	194,029		185,793
Interest Income	808		1,603
Commercial [Member]
Recorded Investment	397,275	466,783	397,275	466,783
Unpaid Principal Balance	560,435	729,423	560,435	729,423
Related Allowance	60,470	80,249	60,470	80,249
Average Recorded Investment	416,421		426,411
Interest Income	985		1,515
Retail [Member]
Recorded Investment	204,282	106,355	204,282	106,355
Unpaid Principal Balance	204,282	106,355	204,282	106,355
Related Allowance	38,993	21,959	38,993	21,959
Average Recorded Investment	194,029		185,793
Interest Income	$ 808		$ 1,603