STOCK-BASED COMPENSATION (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Common Stock Options, Quantity
Exercised (in shares)	(50,000)	(840,649)	(364,324)
Intrinsic value of common stock options, SAR and equity based incentive awards exercised during the period
Stock-based compensation expense recognized	$ 1,834,000	$ 4,779,000	$ 18,318,000
2013 Plan
Intrinsic value of common stock options, SAR and equity based incentive awards exercised during the period
Compensation cost related to unvested granted awards not yet recognized	11,700,000
Weighted average period of recognition of unrecognized compensation cost related to nonvested awards	3 years 3 months 18 days
2009 Plan
Intrinsic value of common stock options, SAR and equity based incentive awards exercised during the period
Stock-based compensation expense recognized	798,000	4,779,000	18,318,000
Restricted stock units
Restricted stock units and Equity-based incentive awards, Quantity
Granted (in shares)	637,800
Forfeited (in shares)	(103,337)
Outstanding at the end of the period (in shares)	534,463
Nonvested Restricted stock units and Equity-based incentive awards, Quantity
Granted (in shares)	637,800
Forfeited (in shares)	(103,337)
Outstanding at the end of the period (in shares)	534,463
Restricted stock units | 2013 Plan
Restricted stock units and Equity-based incentive awards, Quantity
Granted (in shares)	2,000,000
Nonvested Restricted stock units and Equity-based incentive awards, Quantity
Granted (in shares)	2,000,000
Nonvested Equity-based incentive awards, Weighted average grant-date fair value
Outstanding at the end of the period (in dollars per share)	$ 10.53
Intrinsic value of common stock options, SAR and equity based incentive awards exercised during the period
Stock-based compensation expense recognized	1,035,000
Compensation cost related to unvested granted awards not yet recognized	1,100,000
Restricted stock units | 2013 Plan | Vesting based on performance criteria
Intrinsic value of common stock options, SAR and equity based incentive awards exercised during the period
Compensation cost related to unvested granted awards not yet recognized	10,600,000
Common stock options
Common Stock Options, Quantity
Outstanding at the beginning of the period (in shares)	3,578,707
Granted (in shares)	30,000
Exercised (in shares)	(50,000)
Forfeited (in shares)	(576,566)
Expired (in shares)	(577,073)
Outstanding at the end of the period (in shares)	2,405,068	3,578,707
Common Stock Options, Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 18.58
Granted (in dollars per share)	$ 9.07
Exercised (in dollars per share)	$ 9.07
Forfeited (in dollars per share)	$ 15.05
Expired (in dollars per share)	$ 19.85
Outstanding at the end of the period (in dollars per share)	$ 19.20	$ 18.58
Nonvested Common Stock Options, Quantity
Nonvested Common Stock Options at the beginning of the period (in shares)	782,502
Granted (in shares)	30,000
Vested (in shares)	(187,184)
Forfeited (in shares)	(576,566)
Nonvested Common Stock Options at the end of the period (in shares)	48,752	782,502
Nonvested Common Stock Options, Weighted average grant-date fair value
Nonvested options at the beginning of the period (in dollars per share)	$ 7.53
Granted (in dollars per share)	$ 0.77
Vested (in dollars per share)	$ 6.64
Forfeited (in dollars per share)	$ 7.90
Nonvested options at the end of the period (in dollars per share)	$ 2.43	$ 7.53
Vested Common stock options
Vested Common Stock Options, Quantity (in shares)	2,356,316
Vested Common Stock Options, Weighted Average Exercise Price (in dollars per share)	$ 19.41
Vested Common Stock Options, Weighted Average Remaining Contractual Term	5 years 4 months 24 days
Intrinsic value of common stock options, SAR and equity based incentive awards exercised during the period
Total intrinsic value of options exercised	122,000	4,624,000	2,575,000
Equity-based incentive awards
Restricted stock units and Equity-based incentive awards, Quantity
Outstanding at the beginning of the period (in shares)	2,200,552
Exercised (in shares)	(86,250)
Forfeited (in shares)	(266,252)
Expired (in shares)	(276,731)
Outstanding at the end of the period (in shares)	1,571,319	2,200,552
Equity-based incentive awards, Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 14.00
Exercised (in dollars per share)	$ 14.00
Forfeited (in dollars per share)	$ 14.00
Expired (in dollars per share)	$ 14.00
Outstanding at the end of the period (in dollars per share)	$ 14.00	$ 14.00
Nonvested Restricted stock units and Equity-based incentive awards, Quantity
Outstanding at the beginning of the period (in shares)	319,688
Vested (in shares)	(53,436)
Forfeited (in shares)	(266,252)
Outstanding at the end of the period (in shares)		319,688
Nonvested Equity-based incentive awards, Weighted average grant-date fair value
Outstanding at the beginning of the period (in dollars per share)	$ 2.80
Vested (in dollars per share)	$ 2.80
Forfeited (in dollars per share)	$ 2.80
Outstanding at the end of the period (in dollars per share)	$ 2.80	$ 2.80
Vested Restricted stock units and Equity-based incentive awards
Vested Restricted stock units and Equity-based incentive awards, Quantity (in shares)	1,571,319
Vested Equity-based incentive awards, Weighted Average Exercise Price (in dollars per share)	$ 14.00
Vested Equity-based incentive awards, Weighted Average Remaining Contractual Term	5 years 9 months 18 days
Intrinsic value of common stock options, SAR and equity based incentive awards exercised during the period
Total intrinsic value of equity instruments other than options	$ 242,000	$ 35,000	$ 598,000