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Note 3 - Inventories (Tables)
3 Months Ended
Nov. 30, 2018
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
    November 30, 2018   August 31, 2018
Production materials   $
2,357,473
    $
1,824,489
 
Finished goods    
7,859,570
     
7,306,372
 
    $
10,217,043
    $
9,130,861