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Note 3 - Inventories (Tables)
6 Months Ended
Feb. 28, 2019
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
    February 28, 2019   August 31, 2018
Production materials   $
2,108,173
    $
1,824,489
 
Finished goods    
9,196,302
     
7,306,372
 
    $
11,304,475
    $
9,130,861