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Sale of License (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Feb. 28, 2018
Aug. 31, 2018
Aug. 31, 2020
Aug. 31, 2019
Nov. 30, 2017
Assets held for sale          
Net book value     $ 41,200 $ 52,704  
Proceeds from sale of license   $ 1,000      
Gain on sale of license   $ 1,085      
Unrelated Party          
Assets held for sale          
Net book value         $ 26
Gross consideration $ 1,111        
Proceeds from sale of license 1,000        
Foreign tax consideration paid by buyer 111        
Gain on sale of license $ 1,085