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Basis Of Presentation And Summary Of Significant Accounting Policies (Foreign Currency) (Narrative) (Details) - USD ($)
12 Months Ended
Aug. 31, 2022
Aug. 31, 2021
Aug. 31, 2020
Foreign Currency Transactions [Line Items]      
Foreign currency transactions gain (loss), before tax $ 1,100,000 $ 300,000 $ 400,000
Unrealized foreign currency transactions (1,035,000) 511,000 $ (265,000)
Foreign Currency Forward Contracts [Member]      
Foreign Currency Transactions [Line Items]      
Foreign currency forward contracts outstanding 5,800,000    
Realized net losses $ 0 0  
Foreign currency forward contracts, Maturity date Sep. 01, 2022    
Unrealized foreign currency transactions $ 0 $ 0