FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 4) (Fair Value, Measurements, Nonrecurring, USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Fair Value Measurements
Fair Value, Assets Measured on a Nonrecurring Basis
Non-covered loans	$ 67,811	$ 57,751
Fair Value Measurements | Non-covered OREO
Fair Value, Assets Measured on a Nonrecurring Basis
Non-covered OREO	15,735	13,031
Fair Value Measurements | Covered OREO
Fair Value, Assets Measured on a Nonrecurring Basis
Covered OREO	1,786	17,284
Fair Value Measurements | CRE
Fair Value, Assets Measured on a Nonrecurring Basis
Non-covered loans	26,089	29,559
Fair Value Measurements | C&I
Fair Value, Assets Measured on a Nonrecurring Basis
Non-covered loans	16,581	15,120
Fair Value Measurements | Residential
Fair Value, Assets Measured on a Nonrecurring Basis
Non-covered loans	25,034	12,791
Fair Value Measurements | Consumer
Fair Value, Assets Measured on a Nonrecurring Basis
Non-covered loans	107	281
Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on a Nonrecurring Basis
Non-covered loans	67,811	57,751
Significant Unobservable Inputs (Level 3) | Non-covered OREO
Fair Value, Assets Measured on a Nonrecurring Basis
Non-covered OREO	15,735	13,031
Significant Unobservable Inputs (Level 3) | Covered OREO
Fair Value, Assets Measured on a Nonrecurring Basis
Covered OREO	1,786	17,284
Significant Unobservable Inputs (Level 3) | CRE
Fair Value, Assets Measured on a Nonrecurring Basis
Non-covered loans	26,089	29,559
Significant Unobservable Inputs (Level 3) | C&I
Fair Value, Assets Measured on a Nonrecurring Basis
Non-covered loans	16,581	15,120
Significant Unobservable Inputs (Level 3) | Residential
Fair Value, Assets Measured on a Nonrecurring Basis
Non-covered loans	25,034	12,791
Significant Unobservable Inputs (Level 3) | Consumer
Fair Value, Assets Measured on a Nonrecurring Basis
Non-covered loans	$ 107	$ 281