Organization and Summary of Significant Accounting Policies - Additional Information (Detail) |
12 Months Ended | ||
|---|---|---|---|
|
Jan. 31, 2022
USD ($)
Reportingunit
|
Jan. 31, 2021
USD ($)
|
Jan. 31, 2020
USD ($)
|
|
| Summary Of Significant Accounting Policies [Line Items] | |||
| Material inventory losses recognized | $ 0 | $ 0 | $ 0 |
| Number of reporting unit for goodwill impairment | Reportingunit | 1 | ||
| Goodwill impairment | $ 0 | $ 0 | $ 0 |
| Impairment of long-lived assets | 0 | ||
| Impairment losses on investment | $ 0 | ||
| Expected dividend yield | 0.00% | 0.00% | 0.00% |
| Prepaid Expenses and Other Current Assets [Member] | |||
| Summary Of Significant Accounting Policies [Line Items] | |||
| Grants recorded | $ 1,300,000 | ||
| Other Non-current Assets [Member] | |||
| Summary Of Significant Accounting Policies [Line Items] | |||
| Grants recorded | $ 600,000 | ||