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Note 6 - Segment Reporting (Tables)
6 Months Ended
Jun. 30, 2019
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   
Three Months Ended
   
Six Months Ended
 
   
June 30,
   
June 30,
 
   
2019
   
2018
   
2019
   
2018
 
Revenues:
                               
Oil and gas
  $
143,036
    $
160,731
    $
233,932
    $
281,768
 
Timber sales
   
-
     
176,559
     
14,481
     
355,008
 
Surface revenue
   
73,772
     
56,743
     
121,870
     
103,952
 
Total segment revenues
   
216,808
     
394,033
     
370,283
     
740,728
 
                                 
Cost and expenses:
                               
Oil and gas costs
   
13,643
     
13,287
     
28,167
     
29,943
 
Timber costs
   
687
     
14,784
     
5,084
     
35,378
 
Surface costs
   
115
     
7,513
     
693
     
14,503
 
Total segment costs and expenses
   
14,445
     
35,584
     
33,944
     
79,824
 
                                 
Income from operations:
                               
Oil and gas
   
129,393
     
147,444
     
205,765
     
251,825
 
Timber
   
(687
)    
161,775
     
9,397
     
319,630
 
Surface
   
73,657
     
49,230
     
121,177
     
89,449
 
Total segment income from operations
   
202,363
     
358,449
     
336,339
     
660,904
 
Other income (expense) before income taxes
   
(174,501
)    
(117,694
)    
(192,593
)    
640,754
 
Income before income taxes
  $
27,862
    $
240,755
    $
143,746
    $
1,301,658
 
   
Six Months Ended
   
Year Ended
 
   
June 30,
   
December 31,
 
   
2019
   
2018
 
Identifiable Assets, net of accumulated depreciation
               
Timber
  $
2,180,251
    $
2,162,390
 
General corporate assets
   
13,525,438
     
13,439,611
 
Total
   
15,705,689
     
15,602,001
 
                 
Capital expenditures:
               
Timber
   
17,970
     
45,067
 
Surface
   
-
     
4,900
 
General corporate assets
   
-
     
5,471
 
Total segment costs and expenses
   
17,970
     
55,438
 
                 
Depreciation and depletion
               
Oil and gas
   
-
     
-
 
Timber
   
109
     
1,858
 
General corporate assets
   
1,011
     
2,027
 
Total
  $
1,120
    $
3,885