Stock-based Compensation - Weighted-Average Assumptions Used to Estimate Fair Value (Detail) |
3 Months Ended | 6 Months Ended | |
---|---|---|---|
Jul. 31, 2021 |
Jul. 31, 2022 |
Jul. 31, 2021 |
|
Stock options [Member] | |||
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | |||
Volatility | 50.00% | 51.00% | |
Risk-free interest rate | 0.85% | 0.98% | |
Expected term (years) | 5 years 21 days | 5 years 3 months 7 days | |
Dividend yield | 0.00% | 0.00% | |
Employee stock purchase plan awards [Member] | |||
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | |||
Volatility | 89.00% | 61.00% | |
Risk-free interest rate | 0.86% | 0.06% | |
Expected term (years) | 6 months | 6 months | |
Dividend yield | 0.00% | 0.00% |