Derivative Instruments and Hedging Activities (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Nov. 26, 2011	Nov. 27, 2010
Derivative Instruments and Hedging Activities [Abstract]
Notional amount	$ 100,000
Maturity date	Mar. 14, 2011
Fixed interest rate (in hundredths)	3.51%
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Reclassification of losses from accumulated other comprehensive income into interest expense	$ 0	$ 800