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Note 3 - Inventories (Tables)
12 Months Ended
Aug. 31, 2018
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
    August 31, 2018   August 31, 2017
Production materials   $
1,824,489
    $
1,746,916
 
Finished goods    
7,306,372
     
5,709,636
 
    $
9,130,861
    $
7,456,552