Allowance For Non-Covered Loan Loss And Credit Quality (Activity In The Non-Covered Allowance For Loan And Lease Losses) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period, Allowance				$ 92,968				$ 101,921	$ 92,968	$ 101,921
Charge-offs									(41,339)	(65,051)
Recoveries									11,966	9,878
Provision	4,913	7,078	6,638	3,167	6,642	9,089	15,459	15,030	21,796	46,220	113,668
Balance, end of period, Allowance	85,391				92,968				85,391	92,968	101,921
Collectively evaluated for impairment, Allowance	83,990				89,184				83,990	89,184
Individually evaluated for impairment, Allowance	1,401				3,784				1,401	3,784
Collectively evaluated for impairment, Non-covered loans and leases	6,551,194				5,732,899				6,551,194	5,732,899
Individually evaluated for impairment, Non-covered loans and leases	142,409				166,279				142,409	166,279
Total, Non-covered loans and leases	6,693,603				5,899,178				6,693,603	5,899,178
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period, Allowance				59,574				64,405	59,574	64,405
Charge-offs									(22,349)	(36,011)
Recoveries									5,409	5,906
Provision									12,275	25,274
Balance, end of period, Allowance	54,909				59,574				54,909	59,574
Collectively evaluated for impairment, Allowance	53,513				58,402				53,513	58,402
Individually evaluated for impairment, Allowance	1,396				1,172				1,396	1,172
Collectively evaluated for impairment, Non-covered loans and leases	4,073,935				3,673,455				4,073,935	3,673,455
Individually evaluated for impairment, Non-covered loans and leases	123,835				139,979				123,835	139,979
Total, Non-covered loans and leases	4,197,770				3,813,434				4,197,770	3,813,434
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period, Allowance				20,485				22,146	20,485	22,146
Charge-offs									(12,209)	(21,071)
Recoveries									5,356	3,348
Provision									9,293	16,062
Balance, end of period, Allowance	22,925				20,485				22,925	20,485
Collectively evaluated for impairment, Allowance	22,925				17,877				22,925	17,877
Individually evaluated for impairment, Allowance					2,608					2,608
Collectively evaluated for impairment, Non-covered loans and leases	1,702,752				1,432,594				1,702,752	1,432,594
Individually evaluated for impairment, Non-covered loans and leases	18,378				26,171				18,378	26,171
Total, Non-covered loans and leases	1,721,130				1,458,765				1,721,130	1,458,765
Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period, Allowance				7,625				5,926	7,625	5,926
Charge-offs									(5,282)	(6,333)
Recoveries									762	239
Provision									3,820	7,793
Balance, end of period, Allowance	6,925				7,625				6,925	7,625
Collectively evaluated for impairment, Allowance	6,920				7,621				6,920	7,621
Individually evaluated for impairment, Allowance	5				4				5	4
Collectively evaluated for impairment, Non-covered loans and leases	737,201				587,990				737,201	587,990
Individually evaluated for impairment, Non-covered loans and leases	175				129				175	129
Total, Non-covered loans and leases	737,376				588,119				737,376	588,119
Consumer & Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period, Allowance				867				803	867	803
Charge-offs									(1,499)	(1,636)
Recoveries									439	385
Provision									825	1,315
Balance, end of period, Allowance	632				867				632	867
Collectively evaluated for impairment, Allowance	632				867				632	867
Collectively evaluated for impairment, Non-covered loans and leases	37,306				38,860				37,306	38,860
Individually evaluated for impairment, Non-covered loans and leases	21								21
Total, Non-covered loans and leases	37,327				38,860				37,327	38,860
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period, Allowance				4,417				8,641	4,417	8,641
Provision									(4,417)	(4,224)
Balance, end of period, Allowance					4,417					4,417
Collectively evaluated for impairment, Allowance					$ 4,417					$ 4,417