Quarterly report pursuant to Section 13 or 15(d)

Net Loss Per Share - Schedule of Earnings Per Share, Basic and Diluted (Detail)

v3.5.0.2
Net Loss Per Share - Schedule of Earnings Per Share, Basic and Diluted (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended
Oct. 31, 2016
Oct. 31, 2015
Oct. 31, 2016
Oct. 31, 2015
Earnings Per Share [Abstract]        
Net loss $ (8,082) $ (10,565) $ (43,873) $ (25,417)
Weighted average shares used in computing net loss per share - basic and diluted 35,186 33,636 34,889 33,440
Net loss per share:        
Basic $ (0.23) $ (0.31) $ (1.26) $ (0.76)
Diluted $ (0.23) $ (0.31) $ (1.26) $ (0.76)