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Goodwill And Other Intangible Assets (Schedule Of Future Estimated Amortization Expense) (Details) - USD ($)
$ in Thousands
Feb. 29, 2020
Aug. 31, 2019
Finite-Lived Intangible Assets [Line Items]    
Net carrying amount $ 9,475 $ 10,652
Trade Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Remainder of fiscal year 2020 830  
Fiscal year 2021 1,264  
Fiscal year 2022 1,264  
Fiscal year 2023 1,019  
Fiscal year 2024 1,013  
Thereafter 3,672  
Net carrying amount 9,062  
Customer-Based [Member]    
Finite-Lived Intangible Assets [Line Items]    
Remainder of fiscal year 2020 83  
Fiscal year 2021 165  
Fiscal year 2022 165  
Net carrying amount $ 413