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Fair Value Of Financial Instruments (Schedule Of Contingent Consideration Liability) (Details) - USD ($)
$ in Thousands
3 Months Ended
Nov. 30, 2020
Nov. 30, 2019
Business Acquisition, Contingent Consideration [Line Items]    
Contingent Liability at beginning $ 3,883  
Change in fair value 62 $ 91
Payments (329)  
Contingent Liability at ending 3,616  
Jhana [Member]    
Business Acquisition, Contingent Consideration [Line Items]    
Contingent Liability at beginning 3,067  
Change in fair value 80  
Payments (329)  
Contingent Liability at ending 2,818  
RGP [Member]    
Business Acquisition, Contingent Consideration [Line Items]    
Contingent Liability at beginning 816  
Change in fair value (18)  
Payments  
Contingent Liability at ending $ 798