LOANS AND LEASES (Details 3) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
Composition of loans and leases
Total allowance for loans and lease losses	$ (81,180)	$ (82,034)	$ (94,519)	$ (91,968)
Total loans and leases, net	4,079,887	4,230,318	3,374,744
Non-PCI Loans
Composition of loans and leases
Total gross loans and leases	3,828,569	3,930,539
Total discount	(18)	(983)
Total allowance for loans and lease losses	(59,980)	(60,241)	(65,216)	(65,899)
Total loans and leases, net	3,768,571	3,869,315
Total gross loans and leases (as a percent)	100.00%	100.00%
Non-PCI Loans | Real estate mortgage
Composition of loans and leases
Total gross loans and leases	2,320,572	2,424,864
Total allowance for loans and lease losses	(24,352)	(26,078)	(37,265)	(38,700)
Total gross loans and leases (as a percent)	60.00%	62.00%
Non-PCI Loans | Real estate construction
Composition of loans and leases
Total gross loans and leases	240,073	209,090
Total allowance for loans and lease losses	(4,103)	(4,298)	(3,300)	(3,221)
Total gross loans and leases (as a percent)	6.00%	5.00%
Non-PCI Loans | Commercial
Composition of loans and leases
Total gross loans and leases	951,406	972,007
Total allowance for loans and lease losses	(24,334)	(23,694)	(21,151)	(20,759)
Total gross loans and leases (as a percent)	25.00%	25.00%
Non-PCI Loans | Leases
Composition of loans and leases
Total gross loans and leases	249,736	269,769
Total allowance for loans and lease losses	(3,406)	(3,227)	(2,006)	(1,493)
Total gross loans and leases (as a percent)	7.00%	7.00%
Non-PCI Loans | Consumer
Composition of loans and leases
Total gross loans and leases	66,782	54,809
Total allowance for loans and lease losses	(3,785)	(2,944)	(1,494)	(1,726)
Total gross loans and leases (as a percent)	2.00%	1.00%
PCI Loans
Composition of loans and leases
Total gross loans and leases	370,673	428,251
Total discount	(38,157)	(45,455)
Total allowance for loans and lease losses	(21,200)	(21,793)	(29,303)	(26,069)
Total loans and leases, net	311,316	361,003
Total gross loans and leases (as a percent)	100.00%	100.00%
PCI Loans | Real estate mortgage
Composition of loans and leases
Total gross loans and leases	356,653	412,791
Total gross loans and leases (as a percent)	96.00%	96.00%
PCI Loans | Real estate construction
Composition of loans and leases
Total gross loans and leases	11,062	12,015
Total gross loans and leases (as a percent)	3.00%	3.00%
PCI Loans | Commercial
Composition of loans and leases
Total gross loans and leases	2,542	3,021
Total gross loans and leases (as a percent)	1.00%	1.00%
PCI Loans | Consumer
Composition of loans and leases
Total gross loans and leases	$ 416	$ 424