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Note 5 - Segment Reporting - Segmented Operations Information (Details) - USD ($)
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Revenues, Total $ 160,842 $ 228,337 $ 529,930 $ 598,620  
Cost and expenses 87,511 173,774 196,552 456,323  
Income from operations 73,331 54,563 333,378 142,297  
Income before income Taxes 80,245 83,075 388,548 226,821  
Total assets 16,321,873   16,321,873   $ 15,862,530
Capital Expenditures       26,815
Oil and Gas [Member]          
Revenues from customers 50,811 174,097 233,789 408,029  
Timber [Member]          
Revenues from customers 59,416 16,717 71,052 31,198  
Operating Segments [Member]          
Revenues, Total 160,842 228,337 529,930 598,620  
Cost and expenses 6,090 30,069 32,360 64,014  
Income from operations 154,752 198,268 497,570 534,606  
Other income (expense) before income taxes (74,507) (115,193) (109,022) (307,785)  
Income before income Taxes 80,245 83,075 388,548 226,821  
Total assets 16,321,873   16,321,873   15,862,530
Depreciation and Depletion     2,476   2,362
Operating Segments [Member] | Oil And Gas Segment [Member]          
Cost and expenses 5,226 20,196 28,034 48,364  
Income from operations 45,585 153,901 205,755 359,665  
Depreciation and Depletion      
Operating Segments [Member] | Oil And Gas Segment [Member] | Oil and Gas [Member]          
Revenues from customers 50,811 174,097 233,789 408,029  
Operating Segments [Member] | Timber Segment [Member]          
Cost and expenses 666 9,292 3,870 14,376  
Income from operations 58,750 7,425 67,182 16,822  
Total assets 2,187,911   2,187,911   2,188,594
Capital Expenditures       26,815
Depreciation and Depletion     683   611
Operating Segments [Member] | Timber Segment [Member] | Timber [Member]          
Revenues from customers 59,416 16,717 71,052 31,198  
Operating Segments [Member] | Corporate Segment [Member]          
Total assets 14,133,962   14,133,962   13,673,936
Capital Expenditures      
Depreciation and Depletion     1,793   1,751
Operating Segments [Member] | Surface Segment [Member]          
Operating Leases, Income Statement, Lease Revenue, Total 50,615 37,523 225,089 159,393  
Cost and expenses 198 581 456 1,274  
Income from operations $ 50,417 $ 36,942 224,633 $ 158,119  
Capital Expenditures