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Equity - Shares Outstanding (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Apr. 30, 2021
Jan. 31, 2021
Shares Available for Grant    
Shares available for grant, beginning (in shares) 32,871,367  
Shares authorized (in shares) 14,395,880  
Options forfeited (in shares) 608,303  
Shares available for grant, ending (in shares) 45,574,269 32,871,367
Number of Options Outstanding    
Shares outstanding, beginning (in shares) 64,574,656  
Options exercised (in shares) (7,081,859)  
Options forfeited (in shares) (608,303)  
Shares outstanding, ending (in shares) 56,884,494 64,574,656
Weighted- Average Exercise Price    
Shares outstanding, beginning balance (in dollars per share) $ 7.04  
Exercises (in dollars per share) 5.82  
Forfeited (in dollars per share) 4.70  
Shares outstanding, ending balance (in dollars per share) $ 7.21 $ 7.04
Weighted-average remaining contractual life 7 years 6 months 7 years 8 months 12 days
Aggregate Intrinsic Value (in thousands)    
Aggregate intrinsic value $ 12,763,483 $ 17,138,896
Vested and exercisable (in shares) 24,398,863  
Vested and exercisable, weighted average share price (in dollars per share) $ 5.66  
Vested and exercisable, weighted average remaining contractual life 7 years  
Vested and exercisable, intrinsic value $ 5,512,430  
RSUs    
Shares Available for Grant    
RSU's granted (in shares) (2,413,881)  
RSU's forfeited (in shares) 112,600