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Stockholders’ Equity and Employee Incentive Plans - Schedule of Fair Value of Employee Stock Options Estimated using Weighted-Average Assumptions (Details) - Stock options outstanding - 2021 ESPP
6 Months Ended
Jul. 31, 2025
Jul. 31, 2024
Share Based Compensation Arrangement By Share Based Payment Award    
Expected term (in years) 10 months 24 days 1 year 2 months 12 days
Expected volatility (as a percent) 56.70% 60.10%
Risk-free interest rate (as a percent) 4.10% 5.00%
Dividend yield 0.00% 0.00%