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Goodwill And Other Intangible Assets (Schedule Of Future Estimated Amortization Expense) (Details) - USD ($)
$ in Thousands
May 31, 2018
Aug. 31, 2017
Finite-Lived Intangible Assets [Line Items]    
Net carrying amount $ 14,306 $ 16,244
Trade Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Remainder of fiscal year 2018 618  
Fiscal year 2019 2,455  
Fiscal year 2020 2,059  
Fiscal year 2021 1,270  
Fiscal year 2022 1,270  
Thereafter 5,738  
Net carrying amount 13,410  
Customer-Based [Member]    
Finite-Lived Intangible Assets [Line Items]    
Remainder of fiscal year 2018 114  
Fiscal year 2019 265  
Fiscal year 2020 170  
Fiscal year 2021 169  
Fiscal year 2022 169  
Net carrying amount 887  
Technology [Member]    
Finite-Lived Intangible Assets [Line Items]    
Remainder of fiscal year 2018 9  
Net carrying amount $ 9