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Note 4 - Segment Reporting - Segmented Operations Information (Details) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Revenues, Total $ 154,876 $ 180,391  
Cost and expenses (293,451) 124,436  
Income from operations 448,327 55,955  
Income before income Taxes 452,993 73,830  
Total assets 16,696,499   $ 16,316,697
Capital Expenditures 14,114   9,321
Oil and Gas [Member]      
Revenues from customers 50,145 115,050  
Timber [Member]      
Revenues from customers 53,527 7,888  
Operating Segments [Member]      
Revenues, Total 154,876 180,391  
Cost and expenses 9,179 14,188  
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  
Total assets 16,696,499   16,316,697
Depreciation and Depletion 584   3,277
Operating Segments [Member] | Oil And Gas Segment [Member]      
Cost and expenses 8,221 11,737  
Income from operations 41,924 103,313  
Depreciation and Depletion  
Operating Segments [Member] | Oil And Gas Segment [Member] | Oil and Gas [Member]      
Revenues from customers 50,145 115,050  
Operating Segments [Member] | Timber Segment [Member]      
Cost and expenses 958 2,451  
Income from operations 52,569 5,437  
Total assets 2,210,979   2,196,942
Capital Expenditures 14,114   9,321
Depreciation and Depletion 77   974
Operating Segments [Member] | Timber Segment [Member] | Timber [Member]      
Revenues from customers 53,527 7,888  
Operating Segments [Member] | Corporate Segment [Member]      
Total assets 14,485,521   14,119,755
Capital Expenditures  
Depreciation and Depletion 507   2,303
Operating Segments [Member] | Surface Segment [Member]      
Operating Lease, Lease Income, Total 51,204 57,453  
Cost and expenses  
Income from operations 51,204 $ 57,453  
Capital Expenditures