Marketable Securities - Additional Information (Detail) (USD $)	3 Months Ended
	Nov. 22, 2014 Securities	Aug. 30, 2014
Investments, Debt and Equity Securities [Abstract]
Available for sale securities debt maturity period range	Less than one year to approximately three years
Number of securities available for sale loss position	44
Available-For-Sale Marketable Securities, Gross Unrealized Losses	$ 126,000	$ 93,000
Marketable securities transferred	$ 45,300,000