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Note 3 - Property and Equipment (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Gain (Loss) on Disposition of Oil and Gas and Timber Property, Total $ 261,316 $ 41,331 $ 851,582 $ 295,238
Depreciation, Total $ 507 $ 1,326 1,517 1,793
Depletion, Total     534 683
Land [Member]        
Gain (Loss) on Disposition of Oil and Gas and Timber Property, Total     $ 851,582 $ 295,238