NET LOSS PER SHARE (Tables)

6 Months Ended

Jun. 30, 2017

Earnings Per Share [Abstract]

Summary of Basic and Diluted Net Loss Per Common Share

The following table sets forth the computation of the Company’s basic and diluted net loss per share attributable to common stockholders for the periods presented (in thousands, except share and per share data):

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
Net loss attributable to common stockholders	$	(4,375	)	$	(6,550	)	$	(8,284	)	$	(13,144	)
Net loss per share attributable to common stockholders, basic and diluted	$	(0.10	)	$	(0.16	)	$	(0.20	)	$	(0.33	)
Weighted-average shares used to compute net loss per share attributable to common stockholders, basic and diluted	43,146,930			39,706,473			41,958,305			39,578,246

Summary of Anti Dilutive Loss Attributable to Common Stockholders

The following shares have been excluded from the calculation of diluted net loss per share attributable to common stockholders for each period presented because they are anti-dilutive:

	As of June 30,
	2017	2016
Shares subject to outstanding stock options and employee stock purchase plan	3,962,084	4,751,989
Shares subject to outstanding restricted stock units	1,220,479	675,653
Total	5,182,563	5,427,642