Commitments and Contingencies - Summary of Earn-out Liability (Details) - USD ($) $ in Thousands	Oct. 29, 2017	Jan. 29, 2017
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	$ 23,247	$ 6,068
Amount expected to be settled within twelve months	11,486
Compensation Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	4,662	4,576
Not Conditional Upon Continued Employment [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	17,964	949
Interest Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	621	543
Triune Systems [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	0	0
Amount expected to be settled within twelve months	0
Triune Systems [Member] | Compensation Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	0	0
Triune Systems [Member] | Not Conditional Upon Continued Employment [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	0	0
Triune Systems [Member] | Interest Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	0	0
AptoVision Technologies Inc. [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	17,188	0
Amount expected to be settled within twelve months	8,688
AptoVision Technologies Inc. [Member] | Compensation Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	0	0
AptoVision Technologies Inc. [Member] | Not Conditional Upon Continued Employment [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	17,188	0
AptoVision Technologies Inc. [Member] | Interest Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	0	0
Cycleo [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	6,059	6,068
Amount expected to be settled within twelve months	2,798
Cycleo [Member] | Compensation Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	4,662	4,576
Cycleo [Member] | Not Conditional Upon Continued Employment [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	776	949
Cycleo [Member] | Interest Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	$ 621	$ 543