NON-COVERED LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 12) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Allowance for loan losses disclosures
Allowance on covered loans	$ (5,153,000)	$ (6,647,000)
Percentage of allowance allocated to additional advances	2.20%	3.10%
Provision for covered loans	(5,016,000)	(2,422,000)	(4,225,000)
Percentage of income from covered loans under loss-sharing agreements with the FDIC	80.00%
Specific covered loans outside of the scope of ASC 310-30
Allowance for loan losses disclosures
Charge-offs	6,500,000
Provision for covered loans	5,000,000	2,400,000	4,200,000
Income from covered loans under loss-sharing agreements with the FDIC	5,200,000
Percentage of income from covered loans under loss-sharing agreements with the FDIC	80.00%
Loss due to charge-offs	(1,300,000)
Specific covered loans outside of the scope of ASC 310-30 | Commercial and Industrial ("C&I")
Allowance for loan losses disclosures
Charge-offs	5,000,000
Specific covered loans outside of the scope of ASC 310-30 | Commercial Real Estate ("CRE")
Allowance for loan losses disclosures
Charge-offs	$ 1,500,000