EARNINGS PER SHARE - (Information Related to EPS Calculation) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Numerator:
Net income (loss)	$ 43,595	$ 7,996	$ 6,970	$ 143,765	$ 25,881	$ 156,212	$ 50,585	$ (105,959)	$ 202,326	$ 126,719	$ (23,520)
Net income attributable to noncontrolling interests									(23)		(11)
Net income (loss) attributable to common stockholders	$ 43,595	$ 7,973	$ 6,970	$ 143,765	$ 25,881	$ 156,224	$ 50,573	$ (105,959)	$ 202,303	$ 126,719	$ (23,531)
Denominator:
Weighted average basic common shares outstanding	39,502	39,502	39,492	39,473	39,473	39,473	39,468	39,465	39,492	39,470	39,464
Numerator:
Net Income (Loss) Available to Common Stockholders, Basic	$ 43,595	$ 7,973	$ 6,970	$ 143,765	$ 25,881	$ 156,224	$ 50,573	$ (105,959)	$ 202,303	$ 126,719	$ (23,531)
Less: Warrant Liability Gain										(58,320)
Adjusted net income (loss) attributable to common stockholders									$ 202,303	$ 68,399	$ (23,531)
Denominator:
Weighted average basic common shares outstanding	39,502	39,502	39,492	39,473	39,473	39,473	39,468	39,465	39,492	39,470	39,464
Restricted stock and stock options (in shares)									343	411
Warrants (in shares)									2,894	2,873
Weighted average diluted common shares outstanding	42,753	42,760	42,664	42,400	42,743	42,913	43,197	39,465	42,729	42,754	39,464
Basic income (loss) per share: (in dollars per share)	$ 1.10	$ 0.20	$ 0.18	$ 3.64	$ 0.65	$ 3.96	$ 1.28	$ (2.68)	$ 5.12	$ 3.21	$ (0.60)
Diluted income (loss) per share: (in dollars per share)	$ 1.02	$ 0.19	$ 0.16	$ 2.69	$ 0.59	$ 0.76	$ 0.18	$ (2.68)	$ 4.73	$ 1.60	$ (0.60)