Schedule II Valuation and Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Aug. 25, 2012	Aug. 27, 2011	Aug. 28, 2010
Reserves for Accounts Receivable [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance, Beginning of Period	$ 4,201	$ 4,102	$ 5,567
Charged to Costs and Expenses	6,221	3,751	2,733
Charges for Which Reserves Were Created or Deductions	(5,270)	(3,652)	(4,198)
Balance, End of Period	5,152	4,201	4,102
Reserve for Obsolete Inventory [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance, Beginning of Period	1,410	1,783	1,588
Charged to Costs and Expenses	1,465	52	867
Charges for Which Reserves Were Created or Deductions	(553)	(425)	(672)
Balance, End of Period	$ 2,322	$ 1,410	$ 1,783