STOCK-BASED COMPENSATION (Details) (USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended	3 Months Ended
	Jan. 31, 2012	Mar. 31, 2012 Y tranches	Jan. 06, 2012
Assumptions used in the option pricing model to assess the fair values of the options granted and the fair value of equity based incentive awards
Compensation cost related to unvested granted awards not yet recognized		$ 12,577
Weighted average period of recognition of unrecognized compensation cost related to nonvested awards (in years)		3.2
Common stock options
Stock-based compensation
Shares granted during the period	560,000
Exercise price of shares granted (in dollars per share)			$ 9.07
Number of tranches into which the options are divided		2
Vesting period under Time-based Tranche (in years)		4 years
Percentage of options vesting on the first anniversary under Time-based Tranche		25.00%
Remainder vesting period under Time-based Tranche (in years)		3
Number of sub-tranches into which the options are divided under Performance-based Tranche		4
Assumptions used in the option pricing model to assess the fair values of the options granted and the fair value of equity based incentive awards
Weighted average grant-date fair value (in dollars per share)		$ 2.23
Common stock options | Minimum
Assumptions used in the option pricing model to assess the fair values of the options granted and the fair value of equity based incentive awards
Risk free interest rate (as a percent)		0.38%
Expected option life (in years)		2.5
Expected dividend yield (as a percent)		5.40%
Volatility factor (as a percent)		51.44%
Common stock options | Maximum
Assumptions used in the option pricing model to assess the fair values of the options granted and the fair value of equity based incentive awards
Risk free interest rate (as a percent)		1.20%
Expected option life (in years)		5.5
Expected dividend yield (as a percent)		5.61%
Volatility factor (as a percent)		84.69%