Fair Value Measurements - Financial Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Jul. 26, 2020	Jan. 26, 2020
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Convertible debt	$ 10,638	$ 10,700
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total financial assets	11,111	10,700
Total financial liabilities	3,929	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	473	0
Total financial liabilities	1,971	0
Fair Value, Measurements, Recurring | (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total financial assets	10,638	10,700
Total financial liabilities	1,958	2,108
Fair Value, Measurements, Recurring | Convertible debt
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Convertible debt	10,638	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	10,638	10,700
Fair Value, Measurements, Recurring | Cycleo
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Earn-out liability	1,958	2,108
Fair Value, Measurements, Recurring | Cycleo | (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Earn-out liability	0	0
Fair Value, Measurements, Recurring | Cycleo | (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Earn-out liability	0	0
Fair Value, Measurements, Recurring | Cycleo | (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Earn-out liability	1,958	2,108
Foreign Exchange Contract | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Foreign currency forward contracts	473	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	473	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]
Derivative liabilities	1,971	0
Interest Rate Swap | Fair Value, Measurements, Recurring | (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Derivative liabilities	0	0
Interest Rate Swap | Fair Value, Measurements, Recurring | (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Derivative liabilities	1,971	0
Interest Rate Swap | Fair Value, Measurements, Recurring | (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Derivative liabilities	$ 0	$ 0