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Stockholders’ Equity and Employee Incentive Plans - Summary of Stock Option Activity under Stock Plans (Details) - Stock options outstanding - USD ($)
$ / shares in Units, $ in Thousands
 6 Months Ended 12 Months Ended
Jul. 31, 2023
Jul. 31, 2022
Jan. 31, 2023
Options Outstanding, Number of Options      
Beginning balance (in shares) 7,819,480    
Options exercised (in shares) (767,552)    
Options granted (in shares) 0 0  
Options cancelled (in shares) (90,820)    
Ending balance (in shares) 6,961,108   7,819,480
Options vested and expected to vest (in shares) 6,961,108    
Options vested and exercisable (in shares) 6,110,028    
Options Outstanding, Weighted Average Exercise Price      
Beginning balance (in dollars per share) $ 9.78    
Options exercised (in dollars per share) 6.06    
Options granted (in dollars per share) 0    
Options cancelled (in dollars per share) 19.94    
Ending balance (in dollars per share) 10.06   $ 9.78
Options vested and expected to vest (in dollars per share) 10.06    
Options vested and exercisable (in dollars per share) $ 8.88    
Stock Options Additional Disclosures      
Options outstanding, weighted average remaining contractual term (in years) 4 years 11 months 19 days   5 years 2 months 15 days
Options vested and expected to vest, weighted-average contractual term (in years) 4 years 11 months 19 days    
Options vested and exercisable, weighted-average contractual term (in years) 4 years 7 months 28 days    
Options outstanding, aggregate intrinsic value $ 55,070   $ 51,606
Options vested and expected to vest, aggregate intrinsic value 55,070    
Options vested and exercisable, aggregate intrinsic value $ 53,060