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Note 6 - Property, Plant and Equipment, Net (Tables)
3 Months Ended
Mar. 31, 2018
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
March 31,
2018
   
December 31,
2017
 
                 
Land
  $
235,179
    $
235,179
 
Buildings and Improvements
   
2,239,763
     
2,239,763
 
Machinery & Equipment
   
5,153,946
     
5,091,360
 
Total Property, Plant & Equipment
   
7,628,888
     
7,566,302
 
Less: Accumulated Depreciation
   
4,382,659
     
4,242,913
 
Property Plant & Equipment, Net
  $
3,246,229
    $
3,323,389