Commitments and Contingencies Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 30, 2016	Jul. 25, 2015	Jul. 26, 2014
Operating Leased Assets [Line Items]
2017	$ 19,845
2018	15,289
2019	10,704
2020	5,425
2021	3,075
Thereafter	5,098
Total	59,436
Minimum Lease Term, Excess Of One Year
Operating Leased Assets [Line Items]
Operating Leases, Rent Expense, Net	26,800	$ 18,500	$ 17,700
Minimum Lease Term, One Year or Less
Operating Leased Assets [Line Items]
Operating Leases, Rent Expense, Net	$ 23,000	$ 20,400	$ 20,400