RELATED PARTY TRANSACTIONS (Details 2) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2013
Shares, Unvested as of January 1, 2013 (in shares)	520,835
Shares, Granted (in shares)	1,302,654
Shares, Vested (in shares)	(339,199)
Shares, Exercised (in shares)	(5,546)
Shares, Forfeited (in shares)	(12,709)
Shares, Unvested as of June 30, 2013 (in shares)	1,466,035
Weighted-Average Grant-Date Fair Value, Unvested as of January 1, 2013 (in dollars)	$ 824,549
Weighted-Average Grant-Date Fair Value, Granted (in dollars)	2,592,353
Weighted-Average Grant-Date Fair Value, Vested (in dollars)	(719,032)
Weighted-Average Grant-Date Fair Value, Exercised (in dollars)	(3,370)
Weighted-Average Grant-Date Fair Value, Forfeited (in dollars)	(15,623)
Weighted-Average Grant-Date Fair Value, Unvested as of June 30, 2013 (in dollars)	$ 2,678,877