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Note 11 - Other Income, Net (Tables)
12 Months Ended
Dec. 31, 2016
Notes Tables  
Interest and Other Income [Table Text Block]
   
2016
   
2015
 
Net Realized and Unrealized Gain (Loss) on
Trading Securities
  $
61,729
    $
(35,741
)
Gains on Asset Sales
   
22,123
     
68,487
 
Interest Income
   
46,370
     
13,353
 
Settlements of Class Action Lawsuits
   
55,048
     
5,593
 
Agricultural Rental Income
   
5,600
     
5,600
 
Dividend Income
   
1,254
     
1,033
 
Income from Other Investments
   
155,000
     
60,000
 
Interest and Other Expenses
   
(47,532
)    
(48,047
)
Other Income, Net
  $
299,592
    $
70,278