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Note 3 - Inventories (Tables)
6 Months Ended
Feb. 28, 2018
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
    February 28, 2018   August 31, 2017
Production materials   $
1,820,942
    $
1,747,189
 
Finished goods    
7,305,229
     
5,709,363
 
    $
9,126,171
    $
7,456,552