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Note 3 - Inventories (Tables)
9 Months Ended
May 31, 2019
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
      May 31, 2019       August 31, 2018  
Production materials   $
2,135,972
    $
1,824,489
 
Finished goods    
8,483,040
     
7,306,372
 
    $
10,619,012
    $
9,130,861