LOANS AND LEASES (Details 2) (USD $)	3 Months Ended			6 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Allowance for Loan and Lease Losses on Non-Covered Loans and Leases:
Balance, beginning of period	$ 74,767,000	$ 85,313,000	$ 98,564,000	$ 85,313,000	$ 98,653,000
Charge-offs	(3,969,000)		(9,321,000)	(7,229,000)	(18,459,000)
Recoveries	263,000		2,134,000	1,477,000	3,383,000
Provision (recovery)	(271,000)	(6,074,000)	11,390,000	(6,345,000)	22,100,000
Balance, end of period	72,061,000	74,767,000	96,427,000	72,061,000	96,427,000
The ending balance of the allowance is composed of amounts applicable to loans and leases:
Individually evaluated for impairment	14,036,000		15,800,000	14,036,000	15,800,000
Collectively evaluated for impairment	58,025,000		80,627,000	58,025,000	80,627,000
Non-Covered Loan and Lease Balances:
Ending balance	2,846,889,000		2,917,250,000	2,846,889,000	2,917,250,000	2,812,105,000
Individually evaluated for impairment	156,578,000		147,787,000	156,578,000	147,787,000
Collectively evaluated for impairment	2,690,311,000		2,769,463,000	2,690,311,000	2,769,463,000
Real estate mortgage
Allowance for Loan and Lease Losses on Non-Covered Loans and Leases:
Balance, beginning of period	42,210,000	50,205,000	51,858,000	50,205,000	51,657,000
Charge-offs	(2,583,000)		(4,354,000)	(4,773,000)	(5,566,000)
Recoveries	43,000		27,000	372,000	124,000
Provision (recovery)	2,566,000		6,009,000	(3,568,000)	7,325,000
Balance, end of period	42,236,000		53,540,000	42,236,000	53,540,000
The ending balance of the allowance is composed of amounts applicable to loans and leases:
Individually evaluated for impairment	6,221,000		4,659,000	6,221,000	4,659,000
Collectively evaluated for impairment	36,015,000		48,881,000	36,015,000	48,881,000
Non-Covered Loan and Lease Balances:
Ending balance	1,828,777,000		2,073,868,000	1,828,777,000	2,073,868,000	1,982,464,000
Individually evaluated for impairment	102,265,000		98,860,000	102,265,000	98,860,000
Collectively evaluated for impairment	1,726,512,000		1,975,008,000	1,726,512,000	1,975,008,000
Real estate construction
Allowance for Loan and Lease Losses on Non-Covered Loans and Leases:
Balance, beginning of period	6,475,000	8,697,000	11,053,000	8,697,000	8,766,000
Charge-offs			(1,193,000)		(5,838,000)
Recoveries	14,000		896,000	24,000	988,000
Provision (recovery)	(993,000)		429,000	(3,225,000)	7,269,000
Balance, end of period	5,496,000		11,185,000	5,496,000	11,185,000
The ending balance of the allowance is composed of amounts applicable to loans and leases:
Individually evaluated for impairment	1,197,000		2,484,000	1,197,000	2,484,000
Collectively evaluated for impairment	4,299,000		8,701,000	4,299,000	8,701,000
Non-Covered Loan and Lease Balances:
Ending balance	129,107,000		160,254,000	129,107,000	160,254,000	113,059,000
Individually evaluated for impairment	32,607,000		26,069,000	32,607,000	26,069,000
Collectively evaluated for impairment	96,500,000		134,185,000	96,500,000	134,185,000
Commercial
Allowance for Loan and Lease Losses on Non-Covered Loans and Leases:
Balance, beginning of period	23,556,000	23,308,000	31,564,000	23,308,000	33,229,000
Charge-offs	(1,352,000)		(2,609,000)	(2,223,000)	(5,730,000)
Recoveries	190,000		308,000	1,014,000	925,000
Provision (recovery)	(415,000)		(1,004,000)	(120,000)	(165,000)
Balance, end of period	21,979,000		28,259,000	21,979,000	28,259,000
The ending balance of the allowance is composed of amounts applicable to loans and leases:
Individually evaluated for impairment	6,363,000		8,657,000	6,363,000	8,657,000
Collectively evaluated for impairment	15,616,000		19,602,000	15,616,000	19,602,000
Non-Covered Loan and Lease Balances:
Ending balance	701,044,000		640,805,000	701,044,000	640,805,000	671,939,000
Individually evaluated for impairment	20,983,000		22,113,000	20,983,000	22,113,000
Collectively evaluated for impairment	680,061,000		618,692,000	680,061,000	618,692,000
Leases
Allowance for Loan and Lease Losses on Non-Covered Loans and Leases:
Balance, beginning of period	458,000
Provision (recovery)	40,000			498,000
Balance, end of period	498,000			498,000
The ending balance of the allowance is composed of amounts applicable to loans and leases:
Collectively evaluated for impairment	498,000			498,000
Non-Covered Loan and Lease Balances:
Ending balance	153,793,000			153,793,000
Individually evaluated for impairment	244,000			244,000
Collectively evaluated for impairment	153,549,000			153,549,000
Consumer
Allowance for Loan and Lease Losses on Non-Covered Loans and Leases:
Balance, beginning of period	1,908,000	2,768,000	3,455,000	2,768,000	4,652,000
Charge-offs	(34,000)		(1,165,000)	(233,000)	(1,325,000)
Recoveries	16,000		890,000	47,000	1,301,000
Provision (recovery)	(155,000)		(270,000)	(847,000)	(1,718,000)
Balance, end of period	1,735,000		2,910,000	1,735,000	2,910,000
The ending balance of the allowance is composed of amounts applicable to loans and leases:
Individually evaluated for impairment	255,000			255,000
Collectively evaluated for impairment	1,480,000		2,910,000	1,480,000	2,910,000
Non-Covered Loan and Lease Balances:
Ending balance	17,151,000		22,248,000	17,151,000	22,248,000	23,711,000
Individually evaluated for impairment	479,000		745,000	479,000	745,000
Collectively evaluated for impairment	16,672,000		21,503,000	16,672,000	21,503,000
Foreign
Allowance for Loan and Lease Losses on Non-Covered Loans and Leases:
Balance, beginning of period	160,000	335,000	634,000	335,000	349,000
Recoveries			13,000	20,000	45,000
Provision (recovery)	(43,000)		(114,000)	(238,000)	139,000
Balance, end of period	117,000		533,000	117,000	533,000
The ending balance of the allowance is composed of amounts applicable to loans and leases:
Collectively evaluated for impairment	117,000		533,000	117,000	533,000
Non-Covered Loan and Lease Balances:
Ending balance	17,017,000		20,075,000	17,017,000	20,075,000	20,932,000
Collectively evaluated for impairment	$ 17,017,000		$ 20,075,000	$ 17,017,000	$ 20,075,000