EARNINGS PER SHARE (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Numerator:
Net loss	$ (23,170)	$ (111,522)
Net income (loss) attributable to noncontrolling interests	46	(736)
Net loss attributable to common stockholders	$ (23,124)	$ (112,258)
Denominator:
Weighted average basic common shares outstanding	39,441	37,903
Basic and diluted EPS (in dollars per share)	$ (0.59)	$ (2.96)