Leases - Lease Maturities (Details) - USD ($) $ in Thousands	Oct. 31, 2020	Jan. 31, 2020
Finance Lease, Liability, Payment, Due [Abstract]
Remainder of 2021	$ 1,346
2022	8,073
2023	8,073
2024	8,073
2025	8,445
Thereafter	42,829
Total minimum payments	76,839
Less imputed interest	(17,073)
Present value of future minimum lease payments	59,766
Less current obligations under leases	(4,159)	$ (4,633)
Non-current lease obligations	55,607	59,257
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
Remainder of 2021	1,141
2022	7,638
2023	7,682
2024	6,768
2025	5,694
Thereafter	20,033
Total minimum payments	48,956
Less imputed interest	(8,141)
Present value of future minimum lease payments	40,815
Less current obligations under leases	(4,314)	(3,750)
Non-current lease obligations	$ 36,501	$ 8,113