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Long-Term Debt (Schedule of Principal Payments Due on Long-Term Debt) (Details) - USD ($)
$ in Thousands
May 31, 2020
Aug. 31, 2019
May 31, 2019
Debt Disclosure [Abstract]      
1 year $ 195    
2 years 216    
3 years 220    
4 years 225    
5 years 229    
Thereafter 115,312    
Total debt $ 116,397 $ 116,571 $ 116,622