Fair Value Measurements - Financial Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Aug. 01, 2021	Jan. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Convertible debt	$ 11,655	$ 11,989
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total financial assets	11,809	11,989
Total financial liabilities	1,318	1,949
Fair Value, Measurements, Recurring | (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total financial assets	0	0
Total financial liabilities	0	0
Fair Value, Measurements, Recurring | (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total financial assets	154	0
Total financial liabilities	1,318	1,949
Fair Value, Measurements, Recurring | (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total financial assets	11,655	11,989
Total financial liabilities	0	0
Fair Value, Measurements, Recurring | Convertible debt
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Convertible debt	11,655	11,989
Fair Value, Measurements, Recurring | Convertible debt | (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Convertible debt	0	0
Fair Value, Measurements, Recurring | Convertible debt | (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Convertible debt	0	0
Fair Value, Measurements, Recurring | Convertible debt | (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Convertible debt	11,655	11,989
Total Return Swap | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total return swap contracts	154	0
Financial liabilities	0	167
Total Return Swap | Fair Value, Measurements, Recurring | (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total return swap contracts	0	0
Financial liabilities	0	0
Total Return Swap | Fair Value, Measurements, Recurring | (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total return swap contracts	154	0
Financial liabilities	0	167
Total Return Swap | Fair Value, Measurements, Recurring | (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total return swap contracts	0	0
Financial liabilities	0	0
Interest Rate Swap | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial liabilities	1,318	1,782
Interest Rate Swap | Fair Value, Measurements, Recurring | (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial liabilities	0	0
Interest Rate Swap | Fair Value, Measurements, Recurring | (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial liabilities	1,318	1,782
Interest Rate Swap | Fair Value, Measurements, Recurring | (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Financial liabilities	$ 0	$ 0