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Goodwill And Other Intangible Assets (Schedule Of Future Estimated Amortization Expense) (Details) - USD ($)
$ in Thousands
May 31, 2019
Aug. 31, 2018
Finite-Lived Intangible Assets [Line Items]    
Net carrying amount $ 11,381 $ 13,513
Trade Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Remainder of fiscal year 2019 616  
Fiscal year 2020 2,050  
Fiscal year 2021 1,259  
Fiscal year 2022 1,259  
Fiscal year 2023 1,013  
Thereafter 4,661  
Net carrying amount 10,858  
Customer-Based [Member]    
Finite-Lived Intangible Assets [Line Items]    
Remainder of fiscal year 2019 40  
Fiscal year 2020 161  
Fiscal year 2021 161  
Fiscal year 2022 161  
Net carrying amount $ 523