Other Accrued Liabilities (Details) - USD ($) $ in Thousands	Jan. 28, 2017	Jul. 30, 2016
Payables and Accruals [Abstract]
Accrued payroll and related taxes	$ 20,327	$ 23,908
Accrued employee benefit and incentive plan costs	25,307	40,943
Accrued construction costs	26,093	41,123
Other current liabilities	15,410	16,328
Total other accrued liabilities	$ 87,137	$ 122,302