Derivative Financial Instruments - Additional Information (Detail) (USD $)	3 Months Ended
	Nov. 23, 2013	Nov. 17, 2012
Offsetting [Abstract]
Derivative losses recorded in Accumulated other comprehensive loss	$ 11,700,000
Net derivative losses amortized into Interest expense	42,000	412,000
Net derivative loss expected to be reclassified over next 12 months	$ 182,000