SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 5) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Numerator:
Net income (loss)	$ 18,538	$ 7,433	$ (76,496)	$ (23,170)	$ (821)	$ (50,192)	$ 34,992	$ (111,522)	$ (73,695)	$ (127,543)	$ 148,470
Net income attributable to noncontrolling interests									(95)	(745)	(1,290)
Net income (loss) attributable to common stockholders	18,553	7,335	(76,554)	(23,124)	(929)	(49,411)	34,310	(112,258)	(73,790)	(128,288)	147,180
Denominator:
Weighted average number of common shares outstanding	39,454,000	39,454,000	39,445,000	39,441,000	39,778,000	37,916,000	37,907,000	37,903,000	39,449,000	38,127,000	37,908,000
Numerator:
Net income (loss) attributable to common stockholders									(73,790)	(128,288)	147,180
Less: Warrant liability gain											(101,584)
Adjusted net income (loss) attributable to common stockholders									$ (73,790)	$ (128,288)	$ 45,596
Denominator:
Weighted average number of common shares outstanding	39,454,000	39,454,000	39,445,000	39,441,000	39,778,000	37,916,000	37,907,000	37,903,000	39,449,000	38,127,000	37,908,000
Warrants (in shares)											1,074,000
Weighted average diluted common shares outstanding	42,529,000	42,439,000	39,445,000	39,441,000	39,778,000	37,916,000	40,251,000	37,903,000	39,449,000	38,127,000	38,982,000
Basic earnings (loss) per share: (in dollars per share)	$ 0.47	$ 0.19	$ (1.94)	$ (0.59)	$ (0.01)	$ (1.30)	$ 0.91	$ (2.96)	$ (1.87)	$ (3.36)	$ 3.88
Diluted earnings (loss) per share: (in dollars per share)	$ 0.44	$ 0.17	$ (1.94)	$ (0.59)	$ (0.01)	$ (1.30)	$ 0.27	$ (2.96)	$ (1.87)	$ (3.36)	$ 1.17
Stock Options
Denominator:
Antidilutive securities excluded from computation of diluted earnings per share (in shares)									965,440	861,940	715,137
Restricted stock
Denominator:
Antidilutive securities excluded from computation of diluted earnings per share (in shares)									122,334	57,933	42,553
Sponsors Warrants
Denominator:
Antidilutive securities excluded from computation of diluted earnings per share (in shares)									1,916,667	1,916,667
Management Warrants
Denominator:
Antidilutive securities excluded from computation of diluted earnings per share (in shares)									2,862,687	2,862,687