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Note 6 - Company Operations - Segmented Operations Information (Details) - USD ($)
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Revenue by Customer $ 1,144,585 $ 863,402
Surface - related party 38,333 37,667
Cost and Expenses 603,456 676,042
Income from Operations 541,129 187,360
Other Income (Expense) before Income Taxes 44,958 34,951
Income before Income Taxes 586,087 222,311
Total assets 14,723,737 14,418,324
Operating Segments [Member]    
Revenue by Customer 1,144,585 863,402
Cost and Expenses 141,936 167,153
Income from Operations 1,002,649 696,249
Other Income (Expense) before Income Taxes (416,562) (473,938)
Income before Income Taxes 586,087 222,311
Total assets 14,723,737 14,418,324
Capital Expenditures 154,630 2,407,550
Depreciation and Depletion 16,852 2,218
Operating Segments [Member] | Oil And Gas [Member]    
Revenue by Customer 609,122 510,856
Cost and Expenses 62,315 57,115
Income from Operations 546,807 453,741
Total assets
Capital Expenditures
Depreciation and Depletion
Operating Segments [Member] | Timber [Member]    
Revenue by Customer 224,111 125,860
Cost and Expenses 35,692 27,957
Income from Operations 188,419 97,903
Total assets 2,119,180 2,072,368
Capital Expenditures 62,473 528,031
Depreciation and Depletion 15,661 1,751
Operating Segments [Member] | Surface [Member]    
Revenue by Customer 273,019 189,019
Surface - related party 38,333 37,667
Cost and Expenses 43,929 82,081
Income from Operations 267,423 144,605
Total assets
Capital Expenditures
Depreciation and Depletion
Operating Segments [Member] | Corporate Segment [Member]    
Total assets 12,604,557 12,345,956
Capital Expenditures 92,157 1,879,519
Depreciation and Depletion $ 1,191 $ 467