EARNINGS PER SHARE - Components of Numerator and Denominator for Computation of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Earnings Per Share [Abstract]
Net (loss) income attributable to common shareholders - Basic	$ (2,010)	$ 19,022
Interest on Convertible Notes	694	838
Gain on derivative liability	(1,581)	(16,436)
Net (loss) income attributable to common shareholders - Diluted	$ (2,897)	$ 3,424
Weighted average common shares - Basic	32,872,000	31,956,000
Effective of diluted shares:
Share-based awards (shares)	674,000	703,000
Convertible Notes (shares)	2,934,271	3,521,000
Diluted weighted average common shares outstanding (shares)	36,480,000	36,180,000
Net (loss) income per share attributable to common shareholders - Basic (in dollars per share)	$ (0.06)	$ 0.60
Net (loss) income per share attributable to common shareholders - Diluted (in dollars per share)	$ (0.08)	$ 0.09