Loans and Credit Quality (Details 3) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 11,574,885	$ 4,312,352	$ 4,383,393
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	108,408
NonCovered [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	11,223,506	3,929,556	3,950,636
NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	5,398,244	2,422,107	2,548,932
NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	283,067	207,779	188,872
NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	5,433,787	1,244,785	1,178,923
NonCovered [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income		54,885	33,909
NonCovered [Member] | Nonclassified [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	10,962,520	3,802,245
NonCovered [Member] | Nonclassified [Member] | Hospitality [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	504,066	168,216
NonCovered [Member] | Nonclassified [Member] | SBA Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	344,285	39,869
NonCovered [Member] | Nonclassified [Member] | Real Estate Other Class [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	4,430,742	2,132,109
NonCovered [Member] | Nonclassified [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	5,279,093	2,340,194
NonCovered [Member] | Nonclassified [Member] | Residential Real Estate Construction Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	71,961	58,131
NonCovered [Member] | Nonclassified [Member] | Commercial Real Estate Construction Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	205,258	142,607
NonCovered [Member] | Nonclassified [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	277,219	200,738
NonCovered [Member] | Nonclassified [Member] | Collateralized Loan Obligations [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	416,759	567,643
NonCovered [Member] | Nonclassified [Member] | Unsecured Commercial Member [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	125,373	151,896
NonCovered [Member] | Nonclassified [Member] | Asset Based [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	1,575,920	195,569
NonCovered [Member] | Nonclassified [Member] | Cash Flow [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	2,238,196	0
NonCovered [Member] | Nonclassified [Member] | Equipment Finance Commercial Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	906,494	272,851
NonCovered [Member] | Nonclassified [Member] | SBA Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	39,042	22,880
NonCovered [Member] | Nonclassified [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	5,301,784	1,210,839
NonCovered [Member] | Nonclassified [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	104,424	50,474
NonCovered [Member] | Classified [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	260,986	127,311
NonCovered [Member] | Classified [Member] | Hospitality [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	15,284	12,337
NonCovered [Member] | Classified [Member] | SBA Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	7,483	5,297
NonCovered [Member] | Classified [Member] | Real Estate Other Class [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	96,384	64,279
NonCovered [Member] | Classified [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	119,151	81,913
NonCovered [Member] | Classified [Member] | Residential Real Estate Construction Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	925	750
NonCovered [Member] | Classified [Member] | Commercial Real Estate Construction Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	4,923	6,291
NonCovered [Member] | Classified [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	5,848	7,041
NonCovered [Member] | Classified [Member] | Collateralized Loan Obligations [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	11,818	18,838
NonCovered [Member] | Classified [Member] | Unsecured Commercial Member [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	1,666	1,856
NonCovered [Member] | Classified [Member] | Asset Based [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	18,512	6,859
NonCovered [Member] | Classified [Member] | Cash Flow [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	76,002	0
NonCovered [Member] | Classified [Member] | Equipment Finance Commercial Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	21,966	632
NonCovered [Member] | Classified [Member] | SBA Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	2,039	5,761
NonCovered [Member] | Classified [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	132,003	33,946
NonCovered [Member] | Classified [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	3,984	4,411
Unsecured Commercial Member [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	127,039	153,752
Asset Based [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	1,594,432	202,428
Cash Flow [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	2,314,198	0
Equipment Finance Commercial Financing Receivable [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	928,460	273,483
SBA Financing Receivable [Member] | NonCovered [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	41,081	28,641
Residential Real Estate Construction Financing Receivable [Member] | NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	72,886	58,881
Commercial Real Estate Construction Financing Receivable [Member] | NonCovered [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	210,181	148,898
Hospitality [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	519,350	180,553
SBA Loans [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	351,768	45,166
Real Estate Other Class [Member] | NonCovered [Member] | Mortgage Loans on Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 4,527,126	$ 2,196,388