LOANS AND LEASES (Details) (USD $)	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010
Composition of non-covered loans and leases
Total gross non-covered loans and leases	$ 2,846,889,000		$ 2,812,105,000	$ 2,917,250,000
Less: Unearned income	(2,598,000)		(4,392,000)
Less: Allowance for loan and lease losses	(72,061,000)	(74,767,000)	(85,313,000)	(96,427,000)	(98,564,000)	(98,653,000)
Non-covered loans and leases, net	2,772,230,000		2,722,400,000	2,816,709,000
Total gross non-covered loans and leases (as a percent)	100.00%		100.00%
Real estate mortgage
Composition of non-covered loans and leases
Total gross non-covered loans and leases	1,828,777,000		1,982,464,000	2,073,868,000
Less: Allowance for loan and lease losses	(42,236,000)	(42,210,000)	(50,205,000)	(53,540,000)	(51,858,000)	(51,657,000)
Total gross non-covered loans and leases (as a percent)	64.00%		70.00%
Real estate construction
Composition of non-covered loans and leases
Total gross non-covered loans and leases	129,107,000		113,059,000	160,254,000
Less: Allowance for loan and lease losses	(5,496,000)	(6,475,000)	(8,697,000)	(11,185,000)	(11,053,000)	(8,766,000)
Total gross non-covered loans and leases (as a percent)	4.00%		4.00%
Commercial
Composition of non-covered loans and leases
Total gross non-covered loans and leases	701,044,000		671,939,000	640,805,000
Less: Allowance for loan and lease losses	(21,979,000)	(23,556,000)	(23,308,000)	(28,259,000)	(31,564,000)	(33,229,000)
Total gross non-covered loans and leases (as a percent)	25.00%		24.00%
Leases
Composition of non-covered loans and leases
Total gross non-covered loans and leases	153,793,000
Less: Allowance for loan and lease losses	(498,000)	(458,000)
Total gross non-covered loans and leases (as a percent)	5.00%
Leases in process	12,300,000
Consumer
Composition of non-covered loans and leases
Total gross non-covered loans and leases	17,151,000		23,711,000	22,248,000
Less: Allowance for loan and lease losses	(1,735,000)	(1,908,000)	(2,768,000)	(2,910,000)	(3,455,000)	(4,652,000)
Total gross non-covered loans and leases (as a percent)	1.00%		1.00%
Foreign
Composition of non-covered loans and leases
Total gross non-covered loans and leases	17,017,000		20,932,000	20,075,000
Less: Allowance for loan and lease losses	$ (117,000)	$ (160,000)	$ (335,000)	$ (533,000)	$ (634,000)	$ (349,000)
Total gross non-covered loans and leases (as a percent)	1.00%		1.00%