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Note 2 - Oil and Gas Leases (Tables)
 12 Months Ended
Dec. 31, 2014
Notes Tables  
Results of Operations for Oil and Gas Producing Activities Disclosure [Table Text Block]
   
2014
    
2013
  
Gross revenues
                
Royalty interests
   $ 1,366,281     $ 1,716,192  
Lease Fees
     117,499       91,128  
      1,483,780       1,807,320  
Production costs
     97,702       114,204  
Results before income tax expense
     1,386,078       1,693,116  
Estimated income tax expense (40%)
     554,431       677,246  
Results of operations from producing activities excluding corporate overhead
   $ 831,647     $ 1,015,870  
Oil and Gas Net Production, Average Sales Price and Average Production Costs Disclosure [Table Text Block]
   
2014
    
2013
  
                 
Net gas produced (MCF)
     46,457       42,117  
Net oil produced (Bbl)
     10,593       13,273