NET LOSS PER SHARE (Tables)

9 Months Ended

Sep. 30, 2017

Earnings Per Share [Abstract]

Schedule of Computation of Basic and Diluted Net Loss Per Share

The following table presents the computation of basic and diluted net loss per share for the periods presented (in thousands, except per share data):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
Numerator:
Net loss	$	(6,854	)	$	(18,756	)	$	(42,252	)	$	(54,274	)
Denominator:
Weighted average common shares outstanding	84,862			47,278			81,993			46,704
Net loss per share, basic and diluted	$	(0.08	)	$	(0.40	)	$	(0.52	)	$	(1.16	)

Schedule of Potentially Dilutive Securities Excluded from the Computation of Diluted Net Loss Per Share

The following table sets forth the potentially dilutive securities excluded from the computation of the diluted net loss per share (in thousands):

	Three Months Ended September 30,		Nine Months Ended September 30,
	2017	2016	2017	2016
Employee stock options	7,844	9,383	8,121	8,944
Restricted stock units	3,306	840	1,959	994
Warrants to purchase common stock	1,220	45	1,033	85
Total	12,370	10,268	11,113	10,023