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Contract Termination And Restructuring Costs (Schedule Of Restructuring Charges) (Details) - USD ($)
$ in Thousands
12 Months Ended
Aug. 31, 2019
Aug. 31, 2017
Total restructuring charge   $ 1,482
Fiscal 2017 Restructuring Costs [Member]    
Total restructuring charge   $ 3,600
US and Canada Direct Office Restructuring [Member] | Fiscal 2017 Restructuring Costs [Member]    
Severance costs $ 986  
Office closure costs 496  
Total restructuring charge $ 1,482