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Note 4 - Property and Equipment, Net (Tables)
6 Months Ended
Feb. 28, 2019
Notes Tables  
Property, Plant and Equipment [Table Text Block]
    February 28, 2019   August 31, 2018
Land   $
310,365
    $
310,365
 
Buildings and improvements    
7,334,574
     
6,927,484
 
Machinery and equipment    
4,742,472
     
4,680,072
 
     
12,387,411
     
11,917,921
 
Less accumulated depreciation    
(5,158,013
)    
(4,749,095
)
    $
7,229,398
    $
7,168,826