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Stockholders’ Equity and Employee Incentive Plans - Stock Options And Awards Narratives (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jul. 31, 2025
Jul. 31, 2024
Jul. 31, 2025
Jul. 31, 2024
Jan. 31, 2025
Share Based Compensation Arrangement By Share Based Payment Award          
Total stock-based compensation expense $ 14,099 $ 16,156 $ 27,483 $ 30,783  
Award cliff period (in years)     1 year    
ESPP          
Share Based Compensation Arrangement By Share Based Payment Award          
Total stock-based compensation expense 400 $ 400 $ 800 $ 1,000  
Stock-based compensation expected to be recognized weighted-average period (in years)     7 months 6 days    
Unrecognized stock-based compensation expense related to unvested stock options $ 800   $ 800    
Share purchases related to ESPP (in shares)     118,609    
Minimum          
Share Based Compensation Arrangement By Share Based Payment Award          
Award requisite service period (in years)     2 years    
Maximum          
Share Based Compensation Arrangement By Share Based Payment Award          
Award requisite service period (in years)     4 years    
Stock options outstanding          
Share Based Compensation Arrangement By Share Based Payment Award          
Options granted (in shares) 0 0 0 0  
Aggregate intrinsic value of options exercised $ 5,700 $ 1,900 $ 7,700 $ 10,000  
Total grant-date fair value of stock options vested 0 800 300 1,700  
Total stock-based compensation expense 0 1,200 600 2,100  
Service-Based Restricted Stock Units (RSUs)          
Share Based Compensation Arrangement By Share Based Payment Award          
Total stock-based compensation expense 13,300   26,700 25,000  
Aggregate fair value of RSU granted 3,700 2,700 49,400 50,600  
Total grant-date fair value of RSUs vested 13,800 14,900 27,200 24,100  
Unrecognized stock-based compensation expense related to service vesting-based RSUs $ 73,000   $ 73,000    
Stock-based compensation expected to be recognized weighted-average period (in years)     1 year 9 months 18 days    
Number of shares vested during the period (in shares)     1,288,351    
Share-based compensation arrangement by share-based payment award, equity instruments other than options, nonvested, number (in shares) 4,347,973   4,347,973   3,207,812
Performance-based Awards          
Share Based Compensation Arrangement By Share Based Payment Award          
Total stock-based compensation expense $ 400 1,000 $ (800) 2,200  
Total grant-date fair value of RSUs vested   $ 3,200   $ 3,200  
Unrecognized stock-based compensation expense related to service vesting-based RSUs $ 1,300   $ 1,300    
Stock-based compensation expected to be recognized weighted-average period (in years)     1 year    
Number of shares vested during the period (in shares) 0 195,998 0 195,998  
Share-based compensation arrangement by share-based payment award, equity instruments other than options, nonvested, number (in shares) 467,669   467,669    
Market-Based Restricted Stock Units (RSUs)          
Share Based Compensation Arrangement By Share Based Payment Award          
Total stock-based compensation expense $ 0 $ 100 $ 100 $ 400  
Number of shares vested during the period (in shares) 0 79,200 0    
Share-based compensation arrangement by share-based payment award, equity instruments other than options, nonvested, number (in shares) 100,800   100,800    
Awards vested, grant date fair value   $ 1,200