Related Party Transactions (Details) (USD $)	12 Months Ended
	Jul. 27, 2013	Jul. 28, 2012	Jul. 30, 2011
Related Party Transaction [Line Items]
Total expense under lease agreements	$ 1,900,000	$ 1,500,000	$ 1,400,000
Future minimum payments due 2014	13,447,000
Future minimum payments due 2015	9,301,000
Future minimum payments due 2016	6,084,000
Future minimum payments due 2017	3,105,000
Future minimum payments due 2018	1,482,000
Future minimum payments due thereafter	1,198,000
General contractor revenue	700,000	500,000
Affiliated Entity [Member]
Related Party Transaction [Line Items]
Future minimum payments due 2014	1,400,000
Future minimum payments due 2015	1,000,000
Future minimum payments due 2016	1,000,000
Future minimum payments due 2017	1,000,000
Future minimum payments due 2018	400,000
Future minimum payments due thereafter	$ 700,000