Fair Value Measurements - Financial Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Oct. 25, 2020	Jan. 26, 2020
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Convertible debt	$ 11,233	$ 10,700
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total financial assets	11,610	10,700
Total financial liabilities	1,854	2,108
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	377	0
Total financial liabilities	1,854	0
Fair Value, Measurements, Recurring | (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total financial assets	11,233	10,700
Total financial liabilities	0	2,108
Fair Value, Measurements, Recurring | Cycleo
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Cycleo Earn-out	0	2,108
Fair Value, Measurements, Recurring | Cycleo | (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Cycleo Earn-out	0	0
Fair Value, Measurements, Recurring | Cycleo | (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Cycleo Earn-out	0	0
Fair Value, Measurements, Recurring | Cycleo | (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Cycleo Earn-out	0	2,108
Fair Value, Measurements, Recurring | Convertible debt
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Convertible debt	11,233	10,700
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	11,233	10,700
Foreign Exchange Contract | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Foreign currency forward contracts	377	0
Foreign Exchange Contract | Fair Value, Measurements, Recurring | (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Foreign currency forward contracts	0	0
Foreign Exchange Contract | Fair Value, Measurements, Recurring | (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Foreign currency forward contracts	377	0
Foreign Exchange Contract | Fair Value, Measurements, Recurring | (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Foreign currency forward contracts	0	0
Interest Rate Swap | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Interest rate swap agreement	1,854	0
Interest Rate Swap | Fair Value, Measurements, Recurring | (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Interest rate swap agreement	0	0
Interest Rate Swap | Fair Value, Measurements, Recurring | (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Interest rate swap agreement	1,854	0
Interest Rate Swap | Fair Value, Measurements, Recurring | (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Interest rate swap agreement	$ 0	$ 0