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Note 6 - Property, Plant and Equipment, Net (Tables)
 9 Months Ended
Sep. 30, 2019
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
September
30,
2019
    
December 31,
2018
  
                 
Land
   $
228,872
     $
257,205
  
Buildings and improvements
    
1,837,721
      
1,709,165
  
Machinery & equipment
    
13,834,588
      
13,343,878
  
Total property, plant & equipment
    
15,901,181
      
15,310,248
  
Less: accumulated depreciation
    
3,189,009
      
2,006,133
  
Property plant & equipment, net
   $
12,712,172
     $
13,304,115