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Goodwill And Other Intangible Assets (Schedule Of Future Estimated Amortization Expense) (Details) - USD ($)
$ in Thousands
May 31, 2020
Aug. 31, 2019
Finite-Lived Intangible Assets [Line Items]    
Net carrying amount $ 8,821 $ 10,652
Trade Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Remainder of fiscal year 2020 314  
Fiscal year 2021 1,254  
Fiscal year 2022 1,254  
Fiscal year 2023 1,008  
Fiscal year 2024 1,002  
Thereafter 3,636  
Net carrying amount 8,468  
Customer-Based [Member]    
Finite-Lived Intangible Assets [Line Items]    
Remainder of fiscal year 2020 39  
Fiscal year 2021 157  
Fiscal year 2022 157  
Net carrying amount $ 353