Commitments and Contingencies - Summary of Earn-out Liability (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 29, 2017	Jan. 31, 2016
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability	$ 6,068	$ 6,259
Earn-out liability expected to be settled within twelve months	1,426
Amount settled	2,430
Cycleo [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability	6,068	6,259
Earn-out liability expected to be settled within twelve months	1,426
Amount settled	2,430
Triune Systems
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability	0	0
Earn-out liability expected to be settled within twelve months	0
Amount settled	0
Compensation Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability	4,576	4,397
Compensation Expense [Member] | Cycleo [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability	4,576	4,397
Compensation Expense [Member] | Triune Systems
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability	0	0
Not Conditional Upon Future Employment [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability	949	1,457
Not Conditional Upon Future Employment [Member] | Cycleo [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability	949	1,457
Not Conditional Upon Future Employment [Member] | Triune Systems
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability	0	0
Interest Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability	543	405
Interest Expense [Member] | Cycleo [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability	543	405
Interest Expense [Member] | Triune Systems
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability	$ 0	$ 0