NON-CONTROLLING INTEREST - Schedule of Equity by Non-controlling Interest (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance			$ (95,770)
Equity-based compensation			674
Net income attributable to non-controlling interest	$ 7,275	$ (22,867)	9,674	$ (17,409)
Ending balance	$ (86,096)		(86,096)
Non-controlling Interest
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Equity-based compensation			$ 0