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Note 4 - Property and Equipment, Net (Tables)
3 Months Ended
Nov. 30, 2017
Notes Tables  
Property, Plant and Equipment [Table Text Block]
    November 30, 2017   August 31, 2017
Land   $
310,365
    $
310,365
 
Buildings and improvements    
6,855,488
     
6,847,177
 
Machinery and equipment    
4,246,967
     
4,171,387
 
     
11,412,820
     
11,328,929
 
Less accumulated depreciation    
(4,177,519
)    
(3,969,267
)
    $
7,235,301
    $
7,359,662