Leases - Additional Information (Details) - USD ($)	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Lessee Lease Description [Line Items]
Finance lease agreements term	4 years
Sublease expiration year	2025
Operating leases or finance leases,not yet commenced	$ 0
Operating lease not yet commenced, description	We did not have any operating leases or finance leases that have not yet commenced as of January 31, 2021
Other Long-term Liabilities
Lessee Lease Description [Line Items]
Asset retirement obligation	$ 3,100,000	$ 2,800,000
Minimum
Lessee Lease Description [Line Items]
Operating lease expiration year	2022
Total lease term of sublease arrangement	11 months
Maximum
Lessee Lease Description [Line Items]
Operating lease expiration year	2029
Total lease term of sublease arrangement	96 months