v3.10.0.1
Net Loss Per Share - Summary of Calculation of Basic and Diluted Net Loss Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Numerator:      
Net loss allocable to common stockholders $ (8,857) $ (63,509) $ (42,758)
Denominator:      
Weighted-average shares used in computing net loss per share attributable to common stockholders—basic and diluted 104,618 28,308 4,746
Net loss per share, basic and diluted $ (0.08) $ (2.24) $ (9.01)