Stock Incentive Plan - Summary of Weighted-Average Assumptions (Details) - Stock Incentive Plan [Member] - Incentive Stock Options Restricted Stock Options And Other Equity Securities [Member] |
12 Months Ended | |
|---|---|---|
Jan. 31, 2021 |
Jan. 31, 2020 |
|
| Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||
| Expected volatility | 55.00% | 50.00% |
| Expected dividend yield | 0.00% | 0.00% |
| Expected option term (in years) | 2 years | 2 years |
| Risk-free interest rate | 0.23% | 2.27% |