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Marketable Securities (Details Textual) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Feb. 29, 2020
Aug. 31, 2019
Marketable Securities (Textual)    
Percentage of ownership interest 5.60%  
Cost of securities $ 595 $ 595
Marketable securities $ 250 $ 1,295
Marketable securities maturity dates, description After one year through two years. After one year through two years.
Marketable securities maturity, term 12 months  
Cost method investment $ 1  
Minimum [Member]    
Marketable Securities (Textual)    
Marketable securities $ 250  
Yield to maturity rate 2.77% 2.55%
Maximum [Member]    
Marketable Securities (Textual)    
Marketable securities $ 1,748  
Yield to maturity rate 3.28% 3.20%