ALLOWANCE FOR LOAN AND LEASE LOSSES - Allowance for Loan and Lease Losses on Covered Loans (Details) (Covered Loans, USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending allowance on loans acquired with deteriorated credit quality (ASC 310-30)	$ 11,535	$ 18,901
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending allowance on loans acquired with deteriorated credit quality (ASC 310-30)	5,468	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)	5,186	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)	750	761
Installment
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending allowance on loans acquired with deteriorated credit quality (ASC 310-30)	$ 131	$ 225