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Goodwill And Other Intangible Assets (Schedule Of Future Estimated Amortization Expense) (Details) - USD ($)
$ in Thousands
Nov. 30, 2020
Aug. 31, 2020
Finite-Lived Intangible Assets [Line Items]    
Net carrying amount $ 8,268 $ 8,633
Trade Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Remainder of fiscal year 2021 953  
Fiscal year 2022 1,271  
Fiscal year 2023 1,024  
Fiscal year 2024 1,019  
Fiscal year 2025 941  
Thereafter 2,762  
Net carrying amount 7,970  
Customer-Based [Member]    
Finite-Lived Intangible Assets [Line Items]    
Remainder of fiscal year 2021 128  
Fiscal year 2022 170  
Net carrying amount $ 298