Commitments and Contingencies - Additional Information (Details) $ in Thousands |
3 Months Ended | 9 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|
|
Oct. 31, 2021
USD ($)
|
Oct. 31, 2020
USD ($)
|
Oct. 31, 2021
USD ($)
|
Oct. 31, 2020
USD ($)
|
Jan. 31, 2021
USD ($)
Lease
|
Jan. 31, 2020
USD ($)
|
|
| Commitments And Contingencies Disclosure [Line Items] | ||||||
| Lease expiration date | November 2026 | |||||
| Percentage of annual escalation of base rent | 2.75% | 2.75% | ||||
| Rent expense | $ 257 | $ 296 | $ 849 | $ 1,697 | $ 1,984 | $ 1,856 |
| Payments to facilitate early terminations of leases | $ 394 | $ 394 | ||||
| MARYLAND | ||||||
| Commitments And Contingencies Disclosure [Line Items] | ||||||
| Number of lease buyouts | Lease | 2 | |||||