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Note 7 - Net Income Per Share (Details)
3 Months Ended 6 Months Ended
Feb. 28, 2015
Mar. 01, 2014
Feb. 28, 2015
Mar. 01, 2014
Earnings Per Share [Abstract]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 25,901us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 3,836us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 11,903us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 770us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount