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Goodwill And Other Intangible Assets (Schedule Of Future Estimated Amortization Expense) (Details) - USD ($)
$ in Thousands
May 31, 2017
Aug. 31, 2016
Finite-Lived Intangible Assets [Line Items]    
Net carrying amount $ 16,936 $ 19,191
Trade Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Remainder of fiscal year 2017 608  
Fiscal year 2018 2,412  
Fiscal year 2019 2,412  
Fiscal year 2020 2,018  
Fiscal year 2021 1,228  
Thereafter 6,917  
Net carrying amount 15,595  
Customer-Based [Member]    
Finite-Lived Intangible Assets [Line Items]    
Remainder of fiscal year 2017 111  
Fiscal year 2018 442  
Fiscal year 2019 256  
Fiscal year 2020 164  
Fiscal year 2021 164  
Thereafter 163  
Net carrying amount 1,300  
Technology [Member]    
Finite-Lived Intangible Assets [Line Items]    
Remainder of fiscal year 2017 8  
Fiscal year 2018 33  
Net carrying amount $ 41