STOCKHOLDERS' EQUITY (Details 2) (Restricted Stock Units (RSUs) [Member], USD $)	9 Months Ended
	Sep. 30, 2014
Restricted Stock Units (RSUs) [Member]
Unvested restricted stock activity
Balance outstanding at the beginning of the period (in shares)	2,454
Forfeited (in shares)	(115)
Vested (in shares)	(677)
Granted (in shares)	411
Balance outstanding at the end of the period (in shares)	2,072
Weighted-Average Grant-Date Fair Value
Balance at the beginning of the period (in dollars per share)	$ 18.75
Forfeited (in dollars per share)	$ 21.43
Vested (in dollars per share)	$ 15.45
Granted (in dollars per share)	$ 28.74
Balance at the end of the period (in dollars per share)	$ 21.67