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Note 11 - Other Income, Net (Tables)
12 Months Ended
Dec. 31, 2018
Notes Tables  
Interest and Other Income [Table Text Block]
   
2018
   
2017
 
Net Realized and Unrealized Gain (Loss) on Equity Securities
  $
(108,868
)   $
83,622
 
Gains on Asset Sales
   
611,281
     
59,683
 
Interest Income
   
348,615
     
130,498
 
Settlements of Class Action Lawsuits
   
408
     
3,540
 
Agricultural Rental Income
   
5,600
     
5,600
 
Dividend Income
   
2,902
     
2,597
 
Income from Other Investments
   
16,500
     
445,000
 
Interest and Other Expenses
   
(47,724
)    
(47,143
)
Other Income, Net
  $
828,714
    $
683,397