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Goodwill And Other Intangible Assets (Schedule Of Future Estimated Amortization Expense) (Details) - USD ($)
$ in Thousands
Feb. 28, 2021
Aug. 31, 2020
Finite-Lived Intangible Assets [Line Items]    
Net carrying amount $ 8,020 $ 8,633
Trade Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Remainder of fiscal year 2021 642  
Fiscal year 2022 1,283  
Fiscal year 2023 1,037  
Fiscal year 2024 1,031  
Fiscal year 2025 949  
Thereafter 2,808  
Net carrying amount 7,750  
Customer-Based [Member]    
Finite-Lived Intangible Assets [Line Items]    
Remainder of fiscal year 2021 90  
Fiscal year 2022 180  
Net carrying amount $ 270