FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 5) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Covered OREO
Percentage of company's liability for losses under shared loss agreements	20.00%		20.00%		20.00%		20.00%
Percentage of eligible losses for which the FDIC is obligated to reimburse the Company	80.00%		80.00%		80.00%		80.00%
Fair Value, Measurements, Nonrecurring
Fair Value, Assets Measured on Nonrecurring Basis
Increase (decrease) in value of assets	$ (4,277)		$ (5,856)		$ (7,915)		$ (11,094)
Company's liability for losses under shared loss agreements	122		44		170		269
Fair Value, Measurements, Nonrecurring | Non-covered OREO
Fair Value, Assets Measured on Nonrecurring Basis
Increase (decrease) in value of assets	(1,527)		(17)		(1,527)		(1,420)
Fair Value, Measurements, Nonrecurring | Covered OREO
Fair Value, Assets Measured on Nonrecurring Basis
Increase (decrease) in value of assets	(608)	[1]	(219)	[1]	(852)	[1]	(1,344)	[1]
Fair Value, Measurements, Nonrecurring | Residential
Fair Value, Assets Measured on Nonrecurring Basis
Increase (decrease) in value of assets	(538)		(96)		(475)		(677)
Fair Value, Measurements, Nonrecurring | Commercial real estate
Fair Value, Assets Measured on Nonrecurring Basis
Increase (decrease) in value of assets	(281)		1,412		1,049		(1,706)
Fair Value, Measurements, Nonrecurring | Commercial and Industrial ("C&I")
Fair Value, Assets Measured on Nonrecurring Basis
Increase (decrease) in value of assets	(3,457)		(7,172)		(8,488)		(8,599)
Fair Value, Measurements, Nonrecurring | Consumer
Fair Value, Assets Measured on Nonrecurring Basis
Increase (decrease) in value of assets	$ (1)				$ (1)		$ (112)

[1] Covered OREO results from the Washington First International Bank ("WFIB") and United Commercial Bank ("UCB") FDIC-assisted acquisitions for which the Company entered into shared-loss agreements with the FDIC whereby the FDIC will reimburse the Company for 80% of eligible losses. As such, the Company's liability for losses is 20% of the $608 thousand in losses, or $122 thousand, and 20% of the $852 thousand in losses, or $170 thousand, for the three and nine months ended September 30, 2014, respectively. In comparison, the Company's liability for losses is 20% of the $219 thousand in losses, or $44 thousand, and 20% of the $1.3 million in losses, or $269 thousand, for the three and nine months ended September 30, 2013, respectively.