FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 3) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-sale	$ 22,703	$ 29,238
Significant Other Observable Inputs (Level 2)
Fair Value, Assets Measured on a Nonrecurring Basis
Loans held-for-sale	22,703	29,238
Non-PCI Loans
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	70,154	70,462
Non-PCI Loans | Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	70,154	70,462
Non-PCI Loans | CRE
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	14,908	17,252
Non-PCI Loans | CRE | Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	14,908	17,252
Non-PCI Loans | C&I
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	52,172	35,558
Non-PCI Loans | C&I | Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	52,172	35,558
Non-PCI Loans | Residential
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	2,464	16,472
Non-PCI Loans | Residential | Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	2,464	16,472
Non-PCI Loans | Consumer
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	610	1,180
Non-PCI Loans | Consumer | Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	610	1,180
OREO
Fair Value, Assets Measured on a Nonrecurring Basis
OREO	345	4,929
OREO | Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on a Nonrecurring Basis
OREO	$ 345	$ 4,929