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Note 4 - Segment Reporting - Segmented Operations Information (Details) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Total assets $ 16,875,155   $ 16,875,155   $ 16,316,697
Capital Expenditures     14,114   9,321
Revenues, Total 211,306 $ 188,697 366,182 $ 369,088  
Cost and expenses (21,526) (15,395) (314,977) 109,041  
Income from operations 232,832 204,092 681,159 260,047  
Income before income Taxes 237,619 234,473 690,612 308,303  
Oil and Gas [Member]          
Revenues from customers 99,202 67,929 149,347 182,979  
Timber [Member]          
Revenues from customers 49,414 3,747 102,941 11,635  
Operating Segments [Member]          
Total assets 16,875,155   16,875,155   16,316,697
Depreciation and Depletion     1,440   3,277
Revenues, Total 211,306 188,697 366,182 369,088  
Cost and expenses 13,700 12,084 22,879 26,272  
Income from operations 197,606 176,613 343,303 342,816  
Unallocated other income (expense) before income taxes 40,013 57,860 347,309 (34,513)  
Income before income Taxes 237,619 234,473 690,612 308,303  
Timber Segment [Member] | Operating Segments [Member]          
Total assets 2,210,626   2,210,626   2,196,942
Capital Expenditures     14,114   9,321
Depreciation and Depletion     430   974
Cost and expenses 4,255 754 5,213 3,205  
Income from operations 45,159 2,993 97,728 8,430  
Timber Segment [Member] | Operating Segments [Member] | Timber [Member]          
Revenues from customers 49,414 3,747 102,941 11,635  
Oil And Gas Segment [Member] | Operating Segments [Member]          
Depreciation and Depletion     0   0
Cost and expenses 9,445 11,072 17,666 22,809  
Income from operations 89,757 56,857 131,681 160,170  
Oil And Gas Segment [Member] | Operating Segments [Member] | Oil and Gas [Member]          
Revenues from customers 99,202 67,929 149,347 182,979  
Corporate Segment [Member] | Operating Segments [Member]          
Total assets 14,664,529   14,664,529   14,119,755
Capital Expenditures     0   0
Depreciation and Depletion     1,010   2,303
Surface Segment [Member] | Operating Segments [Member]          
Capital Expenditures     0   $ 0
Operating Lease, Lease Income, Total 62,690 117,021 113,894 174,474  
Cost and expenses 0 258 0 258  
Income from operations $ 62,690 $ 116,763 $ 113,894 $ 174,216