EQUITY AND NONCONTROLLING INTERESTS - NONCONTROLLING INTEREST AND REDEEMABLE NONCONTROLLING INTEREST (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Balance, December 31, 2015	$ 49,465
Net income (loss) attributable to noncontrolling interests	(3,970)	$ 577	$ 3,526
Balance, December 31, 2016	41,831	49,465
Noncontrolling Interests in Subsidiaries
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Balance, December 31, 2015	49,465
Net income (loss) attributable to noncontrolling interests	(3,970)	577	$ 3,526
Other comprehensive loss - foreign currency translation adjustments	(3,664)
Balance, December 31, 2016	$ 41,831	$ 49,465