Summary of Discontinued Operations (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Nov. 21, 2012	Nov. 23, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairments		$ (373)
Gains		6
Net (loss) gain		(367)
Other	(60)	(12)
Loss from discontinued operations	$ (60)	$ (379)
Effect on EPS from discontinued operations-basic		$ (0.01)

Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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+ Details