Operating Leases - Additional Information (Details) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
|
Jan. 31, 2021
USD ($)
lease
|
Jan. 31, 2020
USD ($)
|
Jan. 31, 2019
USD ($)
|
|
| Lessee, Lease, Description [Line Items] | |||
| Number of operating lease options | lease | 1 | ||
| Operating lease expense | $ 14.5 | $ 9.7 | |
| Rent expense | $ 7.2 | ||
| Maximum | |||
| Lessee, Lease, Description [Line Items] | |||
| Lease contractual period | 9 years | ||