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Goodwill And Other Intangible Assets (Schedule Of Future Estimated Amortization Expense) (Details) - USD ($)
$ in Thousands
May 31, 2021
Aug. 31, 2020
Finite-Lived Intangible Assets [Line Items]    
Net carrying amount $ 7,665 $ 8,633
Trade Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Remainder of fiscal year 2021 321  
Fiscal year 2022 1,285  
Fiscal year 2023 1,038  
Fiscal year 2024 1,033  
Fiscal year 2025 950  
Thereafter 2,812  
Net carrying amount 7,439  
Customer-Based [Member]    
Finite-Lived Intangible Assets [Line Items]    
Remainder of fiscal year 2021 45  
Fiscal year 2022 181  
Net carrying amount $ 226