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Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended 6 Months Ended
Jul. 31, 2019
Jul. 31, 2018
Jul. 31, 2019
Jul. 31, 2018
Income Statement And Statement Of Comprehensive Income [Abstract]        
Revenue $ 40,361 $ 27,744 $ 77,675 $ 52,764
Cost of revenue 6,106 3,912 11,592 7,797
Gross profit 34,255 23,832 66,083 44,967
Operating expenses:        
Research and development 11,635 7,804 22,541 15,523
Sales and marketing 23,786 15,319 44,953 28,613
General and administrative 13,215 13,672 25,699 20,788
Total operating expenses 48,636 36,795 93,193 64,924
Loss from operations (14,381) (12,963) (27,110) (19,957)
Interest income 1,967 148 2,856 278
Other income, net 80 326 101 715
Loss before provision for income taxes (12,334) (12,489) (24,153) (18,964)
Provision for income taxes (236) (91) (481) (195)
Net loss (12,570) (12,580) (24,634) (19,159)
Comprehensive loss $ (12,570) $ (12,580) $ (24,634) $ (19,159)
Net loss per share, basic and diluted (in dollars per share) $ (0.17) $ (0.59) $ (0.45) $ (0.91)
Weighted average shares used in calculating net loss per share, basic and diluted (in shares) 75,433 21,190 54,327 21,036