Goodwill - Additional Information (Detail) |
12 Months Ended | |||
|---|---|---|---|---|
|
Jan. 31, 2022
USD ($)
Segment
|
Jan. 31, 2021
USD ($)
|
Jan. 31, 2020
USD ($)
|
Nov. 05, 2021
USD ($)
|
|
| Finite Lived Intangible Assets [Line Items] | ||||
| Number of reportable segments | Segment | 1 | |||
| Goodwill | $ 303,625,000 | $ 26,601,000 | ||
| Goodwill impairment | 0 | $ 0 | $ 0 | |
| Oculii Corp [Member] | ||||
| Finite Lived Intangible Assets [Line Items] | ||||
| Goodwill | $ 277,024,000 | |||
| Increase in goodwill | 277,000,000.0 | |||
| Reporting Unit [Member] | ||||
| Finite Lived Intangible Assets [Line Items] | ||||
| Goodwill | $ 0 | |||