Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Fair Value Assumptions (Details)

v3.21.2
Stock-Based Compensation - Fair Value Assumptions (Details) - $ / shares
9 Months Ended
Oct. 31, 2021
Oct. 31, 2020
Stock options    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected term (in years) 6 years 6 years
Risk-free interest rate, minimum 0.90% 0.30%
Risk-free interest rate, maximum 1.40% 0.80%
Expected volatility, minimum 50.90% 42.30%
Expected volatility, maximum 52.10% 45.50%
Expected dividend rate 0.00% 0.00%
Stock options | Minimum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Fair value of common stock (in dollars per share) $ 10.96 $ 4.93
Stock options | Maximum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Fair value of common stock (in dollars per share) $ 14.02 $ 7.38
ESPP    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected term (in years) 10 months 24 days  
Risk-free interest rate, minimum 0.05%  
Risk-free interest rate, maximum 0.08%  
Expected volatility, minimum 55.70%  
Expected volatility, maximum 57.00%  
Expected dividend rate 0.00%  
Fair value of common stock (in dollars per share) $ 22.37