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Note 3 - Company Operations - Segmented Operations Information (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Revenue by Customer $ 394,033 $ 397,005 $ 740,728 $ 595,776  
Total cost, expenses and (gains) 166,232 142,250 (535,054) 311,813  
Income from operations 227,801 254,755 1,275,782 283,963  
Other Income (Expense) before income Taxes 12,954 10,363 25,876 20,575  
Income before income Taxes 240,755 265,118 1,301,658 304,538  
Total assets 15,420,747   15,420,747   $ 14,723,737
Depreciation, depletion and amortization     15,180 467  
Oil and Gas [Member]          
Revenues from customers 161,678 151,693 286,255 333,362  
Timber [Member]          
Revenues from customers 176,559 8,966 355,008 8,966  
Operating Segments [Member]          
Revenue by Customer     740,728 595,776  
Total cost, expenses and (gains)     79,824 64,004  
Income from operations     660,904 531,772  
Other Income (Expense) before income Taxes     328,161 (273,672)  
Income before income Taxes     989,065 258,100  
Total assets 15,420,747 14,723,737 15,420,747 14,723,737  
Capital Expenditures     40,134 11,040  
Depreciation, depletion and amortization     15,180 467  
Oil And Gas Segment [Member] | Operating Segments [Member]          
Total cost, expenses and (gains)     29,943 33,049  
Income from operations     256,312 300,313  
Total assets  
Capital Expenditures      
Depreciation, depletion and amortization      
Oil And Gas Segment [Member] | Operating Segments [Member] | Oil and Gas [Member]          
Revenues from customers     286,255 333,362  
Timber Segment [Member] | Operating Segments [Member]          
Total cost, expenses and (gains)     35,378 6,107  
Income from operations     319,630 2,859  
Total assets 2,134,230 2,119,180 2,134,230 2,119,180  
Capital Expenditures     29,763 11,040  
Depreciation, depletion and amortization     14,713  
Timber Segment [Member] | Operating Segments [Member] | Timber [Member]          
Revenues from customers     355,008 8,966  
Surface Segment [Member] | Operating Segments [Member]          
Revenues, leases     99,465 253,448  
Total cost, expenses and (gains)     14,506 24,848  
Income from operations     84,962 228,600  
Total assets  
Capital Expenditures      
Depreciation, depletion and amortization      
Corporate Segment [Member] | Operating Segments [Member]          
Total assets $ 13,286,517 $ 12,604,557 13,286,517 12,604,557  
Capital Expenditures     10,371  
Depreciation, depletion and amortization     $ 467 $ 467