LOANS AND LEASES (Details 3) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	$ 2,958,321	$ 3,049,505	$ 2,868,220
Real estate mortgage
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	1,796,484	1,917,670	1,896,052
Real estate mortgage | Hospitality
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	172,472	181,144
Real estate mortgage | SBA 504
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	55,403	54,158
Real estate mortgage | Other
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	1,568,609	1,682,368
Real estate construction
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	126,707	129,959	118,304
Real estate construction | Residential
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	43,073	48,629
Real estate construction | Commercial
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	83,634	81,330
Commercial
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	794,419	787,775	665,441
Commercial | Collateralized
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	432,652	453,176
Commercial | Unsecured
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	78,428	69,844
Commercial | Asset-based
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	258,264	239,430
Commercial | SBA 7(a)
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	25,075	25,325
Leases
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	204,766	174,373	153,845
Consumer
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	18,677	22,487	15,826
Foreign
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	17,268	17,241	18,752
Nonclassified
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	2,853,120	2,948,486
Nonclassified | Real estate mortgage
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	1,724,627	1,850,309
Nonclassified | Real estate mortgage | Hospitality
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	158,812	168,489
Nonclassified | Real estate mortgage | SBA 504
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	49,678	48,372
Nonclassified | Real estate mortgage | Other
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	1,516,137	1,633,448
Nonclassified | Real estate construction
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	120,907	124,094
Nonclassified | Real estate construction | Residential
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	41,055	46,591
Nonclassified | Real estate construction | Commercial
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	79,852	77,503
Nonclassified | Commercial
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	767,986	761,097
Nonclassified | Commercial | Collateralized
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	418,425	440,187
Nonclassified | Commercial | Unsecured
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	75,880	66,947
Nonclassified | Commercial | Asset-based
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	254,633	235,075
Nonclassified | Commercial | SBA 7(a)
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	19,048	18,888
Nonclassified | Leases
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	204,522	174,129
Nonclassified | Consumer
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	17,810	21,616
Nonclassified | Foreign
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	17,268	17,241
Classified
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	105,201	101,019
Classified | Real estate mortgage
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	71,857	67,361
Classified | Real estate mortgage | Hospitality
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	13,660	12,655
Classified | Real estate mortgage | SBA 504
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	5,725	5,786
Classified | Real estate mortgage | Other
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	52,472	48,920
Classified | Real estate construction
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	5,800	5,865
Classified | Real estate construction | Residential
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	2,018	2,038
Classified | Real estate construction | Commercial
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	3,782	3,827
Classified | Commercial
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	26,433	26,678
Classified | Commercial | Collateralized
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	14,227	12,989
Classified | Commercial | Unsecured
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	2,548	2,897
Classified | Commercial | Asset-based
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	3,631	4,355
Classified | Commercial | SBA 7(a)
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	6,027	6,437
Classified | Leases
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	244	244
Classified | Consumer
Credit risk rating categories for non-covered loans by portfolio segment and class
Total non-covered loans and leases	$ 867	$ 871