LOANS AND LEASES (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Allowance for Loan and Lease Losses:
Balance, beginning of period	$ 82,034	$ 91,968
Charge-offs	(1,550)	(1,153)
Recoveries	740	1,027
Provision (negative provision)	(44)	2,677
Balance, end of period	81,180	94,519
Loans and Leases:
Total gross loans and leases	4,161,085	3,470,687	4,313,335
Real estate mortgage
Loans and Leases:
Total gross loans and leases	2,642,104		2,795,998
Real estate construction
Loans and Leases:
Total gross loans and leases	249,919		219,517
Commercial
Loans and Leases:
Total gross loans and leases	952,279		972,981
Leases
Loans and Leases:
Total gross loans and leases	249,736		269,769
Consumer
Loans and Leases:
Total gross loans and leases	67,047		55,070
Non-PCI Loans
Allowance for Loan and Lease Losses:
Balance, beginning of period	60,241	65,899
Charge-offs	(1,550)	(1,153)
Recoveries	689	930
Provision (negative provision)	600	(460)
Balance, end of period	59,980	65,216
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	8,665	12,667
Collectively evaluated for impairment	51,315	52,549
Loans and Leases:
Total gross loans and leases	3,828,569	2,983,198	3,930,539
Individually evaluated for impairment	93,222	123,628
Collectively evaluated for impairment	3,735,347	2,859,570
Non-PCI Loans | Real estate mortgage
Allowance for Loan and Lease Losses:
Balance, beginning of period	26,078	38,700
Charge-offs	(94)	(322)
Recoveries	261	177
Provision (negative provision)	(1,893)	(1,290)
Balance, end of period	24,352	37,265
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	2,690	7,805
Collectively evaluated for impairment	21,662	29,460
Loans and Leases:
Total gross loans and leases	2,320,572	1,818,285	2,424,864
Individually evaluated for impairment	58,532	95,712
Collectively evaluated for impairment	2,262,040	1,722,573
Non-PCI Loans | Real estate construction
Allowance for Loan and Lease Losses:
Balance, beginning of period	4,298	3,221
Recoveries	24	323
Provision (negative provision)	(219)	(244)
Balance, end of period	4,103	3,300
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	251	122
Collectively evaluated for impairment	3,852	3,178
Loans and Leases:
Total gross loans and leases	240,073	126,707	209,090
Individually evaluated for impairment	12,926	13,688
Collectively evaluated for impairment	227,147	113,019
Non-PCI Loans | Commercial
Allowance for Loan and Lease Losses:
Balance, beginning of period	23,694	20,759
Charge-offs	(1,069)	(708)
Recoveries	377	407
Provision (negative provision)	1,332	693
Balance, end of period	24,334	21,151
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	5,337	4,467
Collectively evaluated for impairment	18,997	16,684
Loans and Leases:
Total gross loans and leases	951,406	814,292	972,007
Individually evaluated for impairment	17,572	13,355
Collectively evaluated for impairment	933,834	800,937
Non-PCI Loans | Leases
Allowance for Loan and Lease Losses:
Balance, beginning of period	3,227	1,493
Charge-offs	(372)	(114)
Provision (negative provision)	551	627
Balance, end of period	3,406	2,006
Amount of the allowance applicable to loans and leases:
Collectively evaluated for impairment	3,406	2,006
Loans and Leases:
Total gross loans and leases	249,736	204,766	269,769
Individually evaluated for impairment	220	244
Collectively evaluated for impairment	249,516	204,522
Non-PCI Loans | Consumer
Allowance for Loan and Lease Losses:
Balance, beginning of period	2,944	1,726
Charge-offs	(15)	(9)
Recoveries	27	23
Provision (negative provision)	829	(246)
Balance, end of period	3,785	1,494
Amount of the allowance applicable to loans and leases:
Individually evaluated for impairment	387	273
Collectively evaluated for impairment	3,398	1,221
Loans and Leases:
Total gross loans and leases	66,782	19,148	54,809
Individually evaluated for impairment	3,972	629
Collectively evaluated for impairment	62,810	18,519
PCI Loans
Allowance for Loan and Lease Losses:
Balance, beginning of period	21,793	26,069
Recoveries	51	97
Provision (negative provision)	(644)	3,137
Balance, end of period	21,200	29,303
Amount of the allowance applicable to loans and leases:
Acquired with deteriorated credit quality	21,200	29,303
Loans and Leases:
Total gross loans and leases	332,516	487,489	382,796
Acquired with deteriorated credit quality	332,516	487,489
PCI Loans | Real estate mortgage
Loans and Leases:
Total gross loans and leases	321,532		371,134
PCI Loans | Real estate construction
Loans and Leases:
Total gross loans and leases	9,846		10,427
PCI Loans | Commercial
Loans and Leases:
Total gross loans and leases	873		974
PCI Loans | Consumer
Loans and Leases:
Total gross loans and leases	$ 265		$ 261