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Note 6 - Property, Plant and Equipment, Net (Tables)
3 Months Ended
Mar. 31, 2019
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
March
3
1
,
201
9
   
December 31,
201
8
 
                 
Land
  $
257,205
    $
257,205
 
Buildings and improvements
   
1,816,376
     
1,709,165
 
Machinery & equipment
   
13,560,114
     
13,343,879
 
Total property, plant & equipment
   
15,633,695
     
15,310,248
 
Less: accumulated depreciation
   
2,406,734
     
2,006,133
 
Property plant & equipment, net
  $
13,226,961
    $
13,304,115