Commitments and Contingencies - Summary of Earn-out Liability (Details) - USD ($) $ in Thousands	Oct. 28, 2018	Jan. 28, 2018
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	$ 6,424	$ 26,520
Amount expected to be settled within twelve months	3,632
Compensation Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	3,801	4,408
Not Conditional Upon Continued Employment [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	2,623	21,668
Interest Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	0	444
Cycleo
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	4,263	5,520
Amount expected to be settled within twelve months	2,334
Cycleo | Compensation Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	3,801	4,408
Cycleo | Not Conditional Upon Continued Employment [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	462	668
Cycleo | Interest Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	0	444
AptoVision Technologies Inc.
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	2,161	21,000
Amount expected to be settled within twelve months	1,298
AptoVision Technologies Inc. | Compensation Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	0	0
AptoVision Technologies Inc. | Not Conditional Upon Continued Employment [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	2,161	21,000
AptoVision Technologies Inc. | Interest Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	$ 0	$ 0