ALLOWANCE FOR LOAN AND LEASE LOSSES - Additional Information (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for loan and lease losses	$ (2,192,000)	$ 9,042,000
Net charge-offs	6,100,000	8,700,000
FDIC loss sharing income	(508,000)	8,934,000
Allowance for covered loan losses	10,573,000	45,496,000	18,901,000	45,190,000
Covered Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Loss share expenses primarily related to losses on covered OREO	$ 1,600,000	$ 2,100,000