ALLOWANCE FOR LOAN AND LEASE LOSSES - Allowance for Loan and Lease Losses on Covered Loans (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending allowance on loans acquired with deteriorated credit quality (ASC 310-30)	$ 10,573	$ 18,901
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending allowance on loans acquired with deteriorated credit quality (ASC 310-30)	5,079	9,400
Real estate-commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending allowance on loans acquired with deteriorated credit quality (ASC 310-30)	4,564	8,515
Real estate-residential
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending allowance on loans acquired with deteriorated credit quality (ASC 310-30)	719	761
Installment
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending allowance on loans acquired with deteriorated credit quality (ASC 310-30)	$ 211	$ 225