Leases - Lease Liability Maturity Schedule (Details) - USD ($) $ in Thousands	Oct. 31, 2020	Feb. 01, 2020	Jan. 31, 2020
Operating
Fiscal 2021 (remaining three months)	$ 434
2022	1,228
2023	1,142
2024	758
2025	52
Total future minimum lease payments	3,614
Less: interest	(168)
Present value of lease liabilities	3,446	$ 2,928
Finance Leases
Fiscal 2021 (remaining three months)	850
2022	3,139
2023	2,352
2024	1,290
2025	472
Total future minimum lease payments	8,103
Less: interest	(496)
Present value of lease liabilities	$ 7,607		$ 3,612