Derivative Instruments and Hedging Activities (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended			12 Months Ended
	Aug. 25, 2012	Aug. 27, 2011	Aug. 28, 2010	Aug. 27, 2011 Interest Rate Swap [Member]
Derivative [Line Items]
Notional amount	$ 100,000
Maturity date	Mar. 14, 2011
Fixed interest rate (in hundredths)	3.51%
Derivatives, Fair Value [Line Items]
Loss deferred, net of associated tax benefit	0	0	(992)
Derivative Instruments, Gain (Loss) [Line Items]
Reclassification of losses from accumulated other comprehensive income into interest expense				$ 1,800