Loans and Credit Quality (Details 6) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013		Dec. 31, 2013
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Gross	$ 11,591,395				$ 11,591,395				$ 4,313,335
Loans and Leases Receivable, Net of Deferred Income	11,574,885		4,383,393		11,574,885		4,383,393		4,312,352
Consumer Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance	34				34
Loans and Leases Receivable, Gross	108,683				108,683				55,070
Loans and Leases Receivable, Net of Deferred Income	108,408				108,408
Mortgage Loans on Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance	1,568				1,568
Loans and Leases Receivable, Gross	5,721,290				5,721,290				2,795,998
Real Estate Construction [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance	119				119
Loans and Leases Receivable, Gross	293,317				293,317				219,517
Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance	7,654				7,654
Loans and Leases Receivable, Gross	5,468,105				5,468,105				1,242,750
NonCovered [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance	9,375				9,375				7,600
Impaired Financing Receivable Performing Restructured Loans	34,308				34,308				41,648
Impaired Financing Receivable, Recorded Investment	123,256				123,256				88,422
Financing Receivable, Recorded Investment, Nonaccrual Status	88,948				88,948
Impaired Financing Receivable, Unpaid Principal Balance	159,981				159,981				113,813
Loans and Leases Receivable, Gross	11,239,964				11,239,964				3,930,539
Impaired Financing Receivable, Average Recorded Investment	120,839	[1]	119,036	[1]	93,924	[1]	122,921	[1]
Impaired Financing Receivable, Interest Income, Accrual Method	1,109		966		1,792		1,259
Financing Receivable, Individually Evaluated for Impairment	123,256		131,082		123,256		131,082
Loans and Leases Receivable, Net of Deferred Income	11,223,506		3,950,636		11,223,506		3,950,636		3,929,556
NonCovered [Member] | Hospitality [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	1,957				1,957				5,717
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	1,956				1,956				6,215
Impaired Financing Receivable, Related Allowance	92				92				198
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	6,451				6,451				3,013
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	7,593				7,593				3,385
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,963	[1]	8,779	[1]	1,971	[1]	8,770	[1]
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	20		226		60		109
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	6,485	[1]	0	[1]	6,529	[1]	0	[1]
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0		0		0		0
NonCovered [Member] | SBA Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0				0				1,642
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0				0				1,643
Impaired Financing Receivable, Related Allowance	0				0				230
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	7,483				7,483				2,602
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	10,712				10,712				3,646
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0	[1]	1,659	[1]	0	[1]	1,649	[1]
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		23		0		23
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	7,746	[1]	2,935	[1]	5,378	[1]	2,791	[1]
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	38		0		38		0
NonCovered [Member] | Real Estate Mortgage Other Receivable [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	13,302				13,302				15,937
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	13,389				13,389				16,571
Impaired Financing Receivable, Related Allowance	1,476				1,476				1,760
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	30,536				30,536				33,365
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	41,596				41,596				46,062
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	13,401	[1]	51,327	[1]	13,218	[1]	47,411	[1]
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	99		513		376		481
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	31,313	[1]	25,041	[1]	26,235	[1]	25,540	[1]
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	87		133		240		410
NonCovered [Member] | Residential Real Estate Construction Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	767				767				778
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	767				767				778
Impaired Financing Receivable, Related Allowance	72				72				168
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	542				542				0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	550				550				0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	768	[1]	393	[1]	770	[1]	391	[1]
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	4		0		12		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	542	[1]	441	[1]	406	[1]	435	[1]
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0		0		0		0
NonCovered [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	1,162				1,162				1,250
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	4,945				4,945				1,250
Impaired Financing Receivable, Related Allowance	47				47				1
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	10,221				10,221				5,484
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	10,995				10,995				9,923
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,176	[1]	8,540	[1]	539	[1]	8,541	[1]
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	6		87		13		88
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	10,236	[1]	4,568	[1]	8,888	[1]	5,511	[1]
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	74		(59)		171		98
NonCovered [Member] | Collateralized Loan Obligations [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	5,404				5,404				4,377
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	5,789				5,789				4,692
Impaired Financing Receivable, Related Allowance	3,536				3,536				4,270
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	3,820				3,820				6,700
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	10,932				10,932				9,924
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	5,815	[1]	3,804	[1]	5,167	[1]	4,467	[1]
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	43		10		92		7
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	5,252	[1]	4,266	[1]	2,772	[1]	8,989	[1]
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	21		0		52		15
NonCovered [Member] | Unsecured Commercial Member [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	620				620				801
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	631				631				829
Impaired Financing Receivable, Related Allowance	416				416				375
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	180				180				179
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	278				278				247
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	624	[1]	2,062	[1]	664	[1]	787	[1]
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	6		8		18		8
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	202	[1]	179	[1]	264	[1]	217	[1]
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0		0		0		0
NonCovered [Member] | Asset Based [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	262				262				1,070
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	262				262				1,070
Impaired Financing Receivable, Related Allowance	262				262				180
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	4,741				4,741				0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	5,584				5,584				0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	265	[1]	223	[1]	268	[1]	2,377	[1]
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		5		0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	0	[1]	0	[1]	1,560	[1]	0	[1]
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0		0		0		0
NonCovered [Member] | Cash Flow [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	15,958				15,958				0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	18,014				18,014				0
Impaired Financing Receivable, Related Allowance	2,666				2,666				0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0				0				0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	505				505				0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	15,695	[1]	0	[1]	5,232	[1]	0	[1]
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		0		0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	0	[1]	0	[1]	58	[1]	0	[1]
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0		0		0		0
NonCovered [Member] | Equipment Finance Commercial Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	1,864				1,864				0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	1,864				1,864				0
Impaired Financing Receivable, Related Allowance	774				774				0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	11,021				11,021				632
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	14,809				14,809				632
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,889	[1]	0	[1]	1,073	[1]	0	[1]
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		0		0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	9,818	[1]	244	[1]	7,436	[1]	244	[1]
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	671		0		671		0
NonCovered [Member] | SBA Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0				0				1,136
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0				0				1,136
Impaired Financing Receivable, Related Allowance	0				0				178
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	3,310				3,310				3,037
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	4,984				4,984				4,945
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0	[1]	1,094	[1]	0	[1]	1,278	[1]
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0		12		0		12
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	3,756	[1]	2,872	[1]	2,189	[1]	2,846	[1]
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	36		5		36		5
NonCovered [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	146				146				424
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	145				145				471
Impaired Financing Receivable, Related Allowance	34				34				240
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	3,509				3,509				278
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	3,681				3,681				394
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	148	[1]	436	[1]	1,890	[1]	429	[1]
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	2		3		11		3
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	3,745	[1]	173	[1]	1,417	[1]	248	[1]
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	2		0		2		0
Impaired Financing Receivable Performing Restructured Loans	120				120				308
Impaired Financing Receivable, Recorded Investment	3,655				3,655				702
Financing Receivable, Recorded Investment, Nonaccrual Status									394
Impaired Financing Receivable, Unpaid Principal Balance	3,826				3,826				865
Loans and Leases Receivable, Gross	108,340				108,340				54,809
Impaired Financing Receivable, Average Recorded Investment	3,893	[1]	609	[1]	3,307	[1]	677	[1]
Impaired Financing Receivable, Interest Income, Accrual Method	4		3		13		3
Financing Receivable, Individually Evaluated for Impairment	3,655		792		3,655		792
Loans and Leases Receivable, Net of Deferred Income			33,909				33,909		54,885
NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance									2,188
Impaired Financing Receivable Performing Restructured Loans	19,220				19,220				34,303
Impaired Financing Receivable, Recorded Investment	59,729				59,729				62,276
Financing Receivable, Recorded Investment, Nonaccrual Status									27,973
Impaired Financing Receivable, Unpaid Principal Balance	75,246				75,246				77,522
Loans and Leases Receivable, Gross	5,406,371				5,406,371				2,424,864
Impaired Financing Receivable, Average Recorded Investment	60,908	[1]	89,741	[1]	53,331	[1]	86,161	[1]
Impaired Financing Receivable, Interest Income, Accrual Method	244		895		714		1,023
Financing Receivable, Individually Evaluated for Impairment	59,729		90,329		59,729		90,329
Loans and Leases Receivable, Net of Deferred Income	5,398,244		2,548,932		5,398,244		2,548,932		2,422,107
NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance									169
Impaired Financing Receivable Performing Restructured Loans	9,064				9,064				4,293
Impaired Financing Receivable, Recorded Investment	12,692				12,692				7,512
Financing Receivable, Recorded Investment, Nonaccrual Status									3,219
Impaired Financing Receivable, Unpaid Principal Balance	17,257				17,257				11,951
Loans and Leases Receivable, Gross	285,109				285,109				209,090
Impaired Financing Receivable, Average Recorded Investment	12,722	[1]	13,942	[1]	10,603	[1]	14,878	[1]
Impaired Financing Receivable, Interest Income, Accrual Method	84		28		196		186
Financing Receivable, Individually Evaluated for Impairment	12,692		14,878		12,692		14,878
Loans and Leases Receivable, Net of Deferred Income	283,067		188,872		283,067		188,872		207,779
NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance									5,003
Impaired Financing Receivable Performing Restructured Loans	5,904				5,904				2,744
Impaired Financing Receivable, Recorded Investment	47,180				47,180				17,932
Financing Receivable, Recorded Investment, Nonaccrual Status									15,188
Impaired Financing Receivable, Unpaid Principal Balance	63,652				63,652				23,475
Loans and Leases Receivable, Gross	5,440,144				5,440,144				1,241,776
Impaired Financing Receivable, Average Recorded Investment	43,316	[1]	14,744	[1]	26,683	[1]	21,205	[1]
Impaired Financing Receivable, Interest Income, Accrual Method	777		40		869		47
Financing Receivable, Individually Evaluated for Impairment	47,180		25,083		47,180		25,083
Loans and Leases Receivable, Net of Deferred Income	5,433,787		1,178,923		5,433,787		1,178,923		1,244,785
Nonperforming Financing Receivable [Member] | NonCovered [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Gross									46,774
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Hospitality [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	6,451				6,451				6,723
Nonperforming Financing Receivable [Member] | NonCovered [Member] | SBA Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	7,483				7,483				2,602
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Residential Real Estate Construction Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	925				925				389
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Collateralized Loan Obligations [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	5,165				5,165				9,991
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Unsecured Commercial Member [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	226				226				458
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Asset Based [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	5,003				5,003				1,070
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Cash Flow [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	15,958				15,958				0
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Equipment Finance Commercial Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	12,885				12,885				632
Nonperforming Financing Receivable [Member] | NonCovered [Member] | SBA Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	2,039				2,039				3,037
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	3,535				3,535				394
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	40,509				40,509				27,973
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	3,628				3,628				3,219
Nonperforming Financing Receivable [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 41,276				$ 41,276				$ 15,188

[1] (1)For the loans and leases (excluding PCI loans) reported as impaired at September 30, 2014 and 2013, amounts were calculated based on the period of time such loans and leases were impaired during the reported period.