Allowance for Non-Covered Loan and Lease 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, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period, Allowance				$ 85,391				$ 92,968	$ 85,391	$ 92,968
Charge-offs									(30,995)	(41,339)
Recoveries									14,089	11,966
Provision	3,840	3,008	2,993	6,988	4,913	7,078	6,638	3,167	16,829	21,796	46,220
Balance, end of period, Allowance	85,314				85,391				85,314	85,391	92,968
Collectively evaluated for impairment, Allowance	83,517				83,990				83,517	83,990
Individually evaluated for impairment, Allowance	1,797				1,401				1,797	1,401
Total, Allowance for non-covered loans and leases	85,314				85,391				85,314	85,391	92,968
Collectively evaluated for impairment, Non-covered loans and leases	7,253,620				6,538,671				7,253,620	6,538,671
Individually evaluated for impairment, Non-covered loans and leases	100,783				142,409				100,783	142,409
Total, Non-covered loans and leases	7,354,403				6,681,080				7,354,403	6,681,080
Commercial Real Estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period, Allowance				54,909				59,574	54,909	59,574
Charge-offs									(7,445)	(22,349)
Recoveries									3,322	5,409
Provision									2,647	12,275
Balance, end of period, Allowance	53,433				54,909				53,433	54,909
Collectively evaluated for impairment, Allowance	51,648				53,513				51,648	53,513
Individually evaluated for impairment, Allowance	1,785				1,396				1,785	1,396
Total, Allowance for non-covered loans and leases	53,433				54,909				53,433	54,909
Collectively evaluated for impairment, Non-covered loans and leases	4,235,744				4,059,419				4,235,744	4,059,419
Individually evaluated for impairment, Non-covered loans and leases	89,280				123,835				89,280	123,835
Total, Non-covered loans and leases	4,325,024				4,183,254				4,325,024	4,183,254
Commercial [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period, Allowance				22,925				20,485	22,925	20,485
Charge-offs									(19,266)	(12,209)
Recoveries									9,914	5,356
Provision									10,618	9,293
Balance, end of period, Allowance	24,191				22,925				24,191	22,925
Collectively evaluated for impairment, Allowance	24,179				22,925				24,179	22,925
Individually evaluated for impairment, Allowance	12				0				12	0
Total, Allowance for non-covered loans and leases	24,191				22,925				24,191	22,925
Collectively evaluated for impairment, Non-covered loans and leases	2,108,293				1,700,761				2,108,293	1,700,761
Individually evaluated for impairment, Non-covered loans and leases	11,503				18,378				11,503	18,378
Total, Non-covered loans and leases	2,119,796				1,719,139				2,119,796	1,719,139
Residential [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period, Allowance				6,925				7,625	6,925	7,625
Charge-offs									(3,458)	(5,282)
Recoveries									351	762
Provision									3,009	3,820
Balance, end of period, Allowance	6,827				6,925				6,827	6,925
Collectively evaluated for impairment, Allowance	6,827				6,920				6,827	6,920
Individually evaluated for impairment, Allowance	0				5				0	5
Total, Allowance for non-covered loans and leases	6,827				6,925				6,827	6,925
Collectively evaluated for impairment, Non-covered loans and leases	861,470				740,925				861,470	740,925
Individually evaluated for impairment, Non-covered loans and leases	0				175				0	175
Total, Non-covered loans and leases	861,470				741,100				861,470	741,100
Consumer & Other [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period, Allowance				632				867	632	867
Charge-offs									(826)	(1,499)
Recoveries									502	439
Provision									555	825
Balance, end of period, Allowance	863				632				863	632
Collectively evaluated for impairment, Allowance	863				632				863	632
Individually evaluated for impairment, Allowance	0				0				0	0
Total, Allowance for non-covered loans and leases	863				632				863	632
Collectively evaluated for impairment, Non-covered loans and leases	48,113				37,566				48,113	37,566
Individually evaluated for impairment, Non-covered loans and leases	0				21				0	21
Total, Non-covered loans and leases	48,113				37,587				48,113	37,587
Unallocated [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period, Allowance				0				4,417	0	4,417
Charge-offs									0	0
Recoveries									0	0
Provision									0	(4,417)
Balance, end of period, Allowance	0				0				0	0
Collectively evaluated for impairment, Allowance	0				0				0	0
Individually evaluated for impairment, Allowance	0				0				0	0
Total, Allowance for non-covered loans and leases	$ 0				$ 0				$ 0	$ 0