LOANS (covered) - Additional Information (Details) (Covered Loans, USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Loans Accounted for Under FASB ASC Topic 310-30	Dec. 31, 2012 Loans Accounted for Under FASB ASC Topic 310-30
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance including contractual principal, interest, fees, and penalties					$ 569,900,000	$ 852,900,000
Reclassification from non-accretable difference	$ (4,979,000)	$ 2,338,000	$ (5,687,000)	$ 25,780,000
Loans, Federal Deposit Insurance Corporation Reimbursement Percentage on Losses Below Threshold			80.00%
Loans, Federal Deposit Insurance Corporation Reimbursement Percentage on Losses Above Threshold			95.00%