FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 5) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Fair Value, Assets Measured on a Nonrecurring Basis
OREO	$ 3,848	$ 17,521
Loans held for sale	33,719
Loans Receivable | Non-PCI loans
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	73,491	67,811
Loans Receivable | Non-PCI loans | CRE
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	14,641	26,089
Loans Receivable | Non-PCI loans | C&I
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	43,138	16,581
Loans Receivable | Non-PCI loans | Residential
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	15,104	25,034
Loans Receivable | Non-PCI loans | Consumer
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	608	107
Significant Other Observable Inputs (Level 2)
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held for sale	33,719
Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on a Nonrecurring Basis
OREO	3,848	17,521
Significant Unobservable Inputs (Level 3) | Loans Receivable | Non-PCI loans
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	73,491	67,811
Significant Unobservable Inputs (Level 3) | Loans Receivable | Non-PCI loans | CRE
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	14,641	26,089
Significant Unobservable Inputs (Level 3) | Loans Receivable | Non-PCI loans | C&I
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	43,138	16,581
Significant Unobservable Inputs (Level 3) | Loans Receivable | Non-PCI loans | Residential
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	15,104	25,034
Significant Unobservable Inputs (Level 3) | Loans Receivable | Non-PCI loans | Consumer
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	$ 608	$ 107