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Note 7 - Impairment of Long-Lived Assets, Discontinued Operations and Property Held for Sale (Details) - Sales and Pretax Income (Losses) Reported for Discontinued Operations (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Nov. 19, 2014
Nov. 20, 2013
Sales and Pretax Income (Losses) Reported for Discontinued Operations [Abstract]    
Sales   $ 1,494us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue
Pretax loss (308)us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax (910)us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax
Income tax benefit from discontinued operations 105us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation 57us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation
Loss from discontinued operations $ (203)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax $ (853)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax