Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 23, 2016	Apr. 25, 2015	Apr. 23, 2016	Apr. 25, 2015
Real property and equipment leases
Related Party Transaction [Line Items]
Total expense under lease agreements	$ 622	$ 648	$ 2,060	$ 1,952
Subcontractors and materials expense
Related Party Transaction [Line Items]
Total expense under lease agreements	$ 1,064	$ 792	$ 2,915	$ 1,981