EARNINGS PER SHARE - (Information Related to EPS Calculation) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Numerator:
Net income (loss)	$ 5,659	$ 143,765
Net income attributable to common stockholders	$ 5,659	$ 143,765
Denominator:
Weighted average basic common shares outstanding	39,799	39,473
Numerator:
Net income attributable to common stockholders	$ 5,659	$ 143,765
Less: Warrant liability gain		(29,820)
Adjusted net income (loss) attributable to common stockholders	$ 5,659	$ 113,945
Denominator:
Weighted average basic common shares outstanding	39,799	39,473
Restricted stock and stock options (in shares)	317	357
Warrants (in shares)	2,641	2,570
Weighted average diluted common shares outstanding	42,757	42,400
Basic income per share: (in dollars per share)	$ 0.14	$ 3.64
Diluted income per share: (in dollars per share)	$ 0.13	$ 2.69