v3.8.0.1

NET LOSS PER SHARE - Calculation of Basic and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Numerator: |  |  |  |
Net loss | $ (6,612) | $ (9,712) | $ (19,504) | $ (29,647)
Denominator: |  |  |  |
Weighted-average shares used to compute net loss per share, basic and diluted | 53,683,727 | 50,818,710 | 53,070,863 | 49,920,630
Basic (in dollars per share) | $ (0.12) | $ (0.19) | $ (0.37) | $ (0.59)

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