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Note 2 - Accounting Pronouncements (Details Textual) - USD ($)
Sep. 01, 2019
Aug. 31, 2019
Aug. 31, 2018
Assets, Total   $ 67,511,087 $ 63,549,236
Subsequent Event [Member] | Accounting Standards Update 2016-02 [Member] | Minimum [Member]      
Assets, Total $ 500,000    
Liabilities, Total 500,000    
Subsequent Event [Member] | Accounting Standards Update 2016-02 [Member] | Maximum [Member]      
Assets, Total 750,000    
Liabilities, Total $ 750,000