Commitments and Contingencies - Summary of Earn-out Liability (Details) - USD ($) $ in Thousands	Oct. 25, 2015	Jul. 26, 2015	Jan. 25, 2015
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	$ 8,135		$ 1,771
Amount expected to be settled within twelve months	1,684		0
Compensation Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	3,634		140
Not Conditional Upon Continued Employment [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	4,201		1,619
Interest Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	300		12
Triune Systems [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	2,820	$ 16,900	0
Amount expected to be settled within twelve months	0		0
Triune Systems [Member] | Compensation Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	76		0
Triune Systems [Member] | Not Conditional Upon Continued Employment [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	2,744		0
Triune Systems [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	5,315		1,771
Amount expected to be settled within twelve months	1,684		0
Cycleo [Member] | Compensation Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	3,558		140
Cycleo [Member] | Not Conditional Upon Continued Employment [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	1,457		1,619
Cycleo [Member] | Interest Expense [Member]
Business Acquisition, Contingent Consideration [Line Items]
Earn-out liability booked	$ 300		$ 12