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Employee Stock Plans - Stock Option Activity (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Jan. 31, 2023
Jan. 31, 2022
Shares Subject To Outstanding Stock Options    
Outstanding, beginning balance (in shares) 8,560  
Granted (in shares) 20  
Exercised (in shares) (477)  
Forfeited (in shares) (342)  
Outstanding, ending balance (in shares) 7,761 8,560
Exercisable (in shares) 3,198  
Vested and expected to vest (in shares) 7,660  
Weighted Average Exercise Price    
Weighted average exercise price, beginning balance (in dollars per share) $ 9.22  
Granted (in dollars per share) 12.52  
Exercised (in dollars per share) 5.12  
Forfeited (in dollars per share) 13.62  
Weighted average exercise price, ending balance (in dollars per share) 9.28 $ 9.22
Exercisable (in dollars per share) 3.38  
Vested and expected to vest (in dollars per share) $ 9.22  
Average Remaining Contractual Term (Years)    
Average remaining contractual term (years), outstanding 5 years 5 years 10 months 24 days
Average remaining contractual term (years), exercisable 2 years 6 months  
Average remaining contractual term (years), vested and expected to vest 4 years 10 months 24 days  
Aggregate Intrinsic Value    
Aggregate intrinsic value, outstanding $ 14,505 $ 67,259
Aggregate intrinsic value, exercisable 14,505  
Aggregate intrinsic value, vested and expected to vest $ 14,505