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Net Earnings Per Share (Schedule Of Anti-Dilutive Securities Excluded From Computation Of Earnings Per Share) (Details)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Feb. 28, 2015
Feb. 28, 2014
Feb. 28, 2015
Feb. 28, 2014
Restricted Stock Units [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti-dilutive securities excluded from the computation of earnings per share 2us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
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= us-gaap_RestrictedStockMember
6us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
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6us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
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Stock Options [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti-dilutive securities excluded from the computation of earnings per share 50us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
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47us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
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54us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
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40us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
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