Commitments And Contingencies (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 29, 2015	Aug. 30, 2014	Aug. 31, 2013
Commitments And Contingencies [Line Items]
Rental expense, operating leases	$ 14,504	$ 16,329	$ 13,243
Maximum [Member]
Commitments And Contingencies [Line Items]
Lease expiration date	2030
Related Party Commitments [Member]
Commitments And Contingencies [Line Items]
Rental expense, operating leases	$ 2,401	$ 2,297	$ 2,293
Equipment And Automobile [Member]
Commitments And Contingencies [Line Items]
Lease expiration date	2019