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Equity Plans and Stock-based Compensation - Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended 12 Months Ended
Oct. 31, 2022
Jan. 31, 2022
Number of Stock Option Awards    
Outstanding as of beginning of period (in shares) 22,200,869  
Options exercised (in shares) (3,061,363)  
Forfeited (in shares) (353,790)  
Outstanding as end of period (in shares) 18,785,716 22,200,869
Options vested and expected to vest at end of period (in shares) 18,743,799  
Exercisable at end of period (in shares) 14,877,966  
Weighted Average Exercise Price    
Outstanding as of beginning of period (USD per share) $ 0.68  
Options exercised (USD per share) 0.59  
Forfeited (USD per share) 0.76  
Outstanding as of end of period (USD per share) 0.69 $ 0.68
Options vested and expected to vest as of end of period (USD per share) 0.69  
Exercisable as of end of period (USD per share) $ 0.68  
Weighted Average Remaining Contractual term (in years)    
Outstanding (in years) 6 years 6 years 7 months 6 days
Options vested and expected to ves (in years) 6 years  
Exercisable (in years) 5 years 8 months 12 days  
Aggregate Intrinsic Value (in thousands)    
Outstanding $ 249,585 $ 292,362
Options vested and expected to vest 249,031  
Exercisable $ 197,925