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Note 3 - Company Operations (Tables)
6 Months Ended
Jun. 30, 2017
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   
2017
   
2016
 
Revenues:
               
Oil and Gas
  $
333,362
    $
208,199
 
Timber
   
8,966
     
120,868
 
Surface
   
253,448
     
98,889
 
Total
   
595,776
     
427,956
 
Cost and Expenses:
               
Oil and Gas
   
33,049
     
25,254
 
Timber
   
6,107
     
18,662
 
Surface
   
24,848
     
38,525
 
Total
   
64,004
     
82,441
 
Income from Operations:
               
Oil and Gas
   
300,313
     
182,945
 
Timber
   
2,859
     
102,206
 
Surface
   
228,600
     
60,364
 
Total
   
531,772
     
345,515
 
Other Expense before Income Taxes:
  $
(227,234
)   $
(213,015
)
Income before Income Taxes
   
304,538
     
132,500
 
Identifiable Assets, net of accumulated depreciation:
               
Oil and Gas
   
--
     
--
 
Timber
   
2,083,408
     
1,598,058
 
Surface
   
--
     
--
 
General Corporate Assets
   
12,410,044
     
12,765,073
 
Total
   
14,493,452
     
14,363,131
 
                 
Capital Expenditures:
               
Oil and Gas
   
--
     
--
 
Timber
   
11,040
     
53,721
 
Surface
   
--
     
--
 
General Corporate Assets:
   
--
     
272,533
 
Total
   
11,040
     
326,254
 
                 
Depreciation and Depletion:
               
Oil and Gas
   
--
     
--
 
Timber
   
--
     
1,751
 
Surface
   
--
     
--
 
General Corporate Assets
   
467
     
--
 
Total
  $
467
    $
1,751
 
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]
Count
   
2017
   
2016
 
1     $
179,292
    $
112,835
 
2      
80,210
     
97,135
 
3      
54,154
     
63,449
 
4      
42,513
     
52,063
 
5      
38,333
     
51,020
 
6      
--
     
47,666