Other Accrued Liabilities (Details) (USD $)	Apr. 26, 2014	Jul. 27, 2013
Other Accrued Liabilities [Line Items]
Accrued payroll and related taxes	$ 16,834,000	$ 19,940,000
Accrued employee benefit and incentive plan costs	12,808,000	15,325,000
Accrued construction costs	20,762,000	20,883,000
Accrued interest and related bank fees	5,795,000	937,000
Other current liabilities	13,559,000	14,106,000
Total other accrued liabilities	69,758,000	71,191,000
Other Accrued Liabilities
Other Accrued Liabilities [Line Items]
Accrued income taxes for other current liabilities		$ 2,300,000