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Note 3 - Inventories (Tables)
12 Months Ended
Aug. 31, 2019
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
    August 31, 2019   August 31, 2018
Production materials   $
1,980,816
    $
1,824,489
Finished goods    
8,507,912
     
7,306,372
 
    $
10,488,728
    $
9,130,861