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Note 11 - Segment and Geographic Information - Fees for Services Provided to Joint Ventures by Geographic Location as a Percentage of Total Fees (Details) - USD ($)
 12 Months Ended
Aug. 31, 2020
Aug. 31, 2019
Fees $ 4,612,885 $ 5,727,579
GERMANY    
Fees 843,752 852,526
JAPAN    
Fees 628,889 748,489
POLAND    
Fees 553,198 704,942
SWEDEN    
Fees 372,017 589,654
THAILAND    
Fees 328,452 418,334
FRANCE    
Fees 310,661 430,537
CZECHIA    
Fees 270,032 345,798
KOREA, REPUBLIC OF    
Fees 266,703 346,244
FINLAND    
Fees 256,375 281,295
UNITED KINGDOM    
Fees 255,121 319,671
INDIA    
Fees 250,976 350,172
Other Countries [Member]    
Fees $ 276,709 $ 339,917