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Note 4 - Segment Reporting (Tables)
3 Months Ended
Mar. 31, 2021
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   
Three Months Ended March 31,
 
   
2021
   
2020
 
Revenues:
               
Oil and gas
  $
50,145
    $
115,050
 
Timber sales
   
53,527
     
7,888
 
Surface revenue
   
51,204
     
57,453
 
Total segment revenues
   
154,876
     
180,391
 
                 
Cost and expenses:
               
Oil and gas costs
   
8,221
     
11,737
 
Timber costs
   
958
     
2,451
 
Surface costs
   
-
     
-
 
Total segment costs and expenses
   
9,179
     
14,188
 
                 
Net income from operations:
               
Oil and gas
   
41,924
     
103,313
 
Timber
   
52,569
     
5,437
 
Surface
   
51,204
     
57,453
 
Total segment net income from operations
   
145,697
     
166,203
 
Unallocated other income (expense) before income taxes
   
307,296
     
(92,373
)
Income before income taxes
  $
452,993
    $
73,830
 
   
Three Months Ended
   
Year Ended
 
   
March 31,
   
December 31,
 
   
2021
   
2020
 
Identifiable Assets, net of accumulated depreciation
               
Timber
  $
2,210,979
    $
2,196,942
 
General corporate assets
   
14,485,521
     
14,119,755
 
Total
   
16,696,499
     
16,316,697
 
                 
Capital expenditures:
               
Timber
   
14,114
     
9,321
 
Surface
   
-
     
-
 
General corporate assets
   
-
     
-
 
Total segment costs and expenses
  $
14,114
    $
9,321
 
                 
Depreciation and depletion
               
Oil and gas
   
-
     
-
 
Timber
   
77
     
974
 
General corporate assets
   
507
     
2,303
 
Total
  $
584
    $
3,277