NET LOSS PER SHARE - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Earnings Per Share [Abstract]
Net loss	$ (833)	$ (8,832)
Weighted average shares used in computing basic net income (loss) per share (shares)	39,034	38,278
Net income (loss) per share - Basic (in dollars per share)	$ (0.02)	$ (0.23)
Net loss	$ (833)	$ (8,832)
Weighted average shares used in computing diluted net income (loss) per share (shares)	39,034	38,278
Net income (loss) per share - Diluted (in dollars per share)	$ (0.02)	$ (0.23)