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DERIVATIVE FINANCIAL INSTRUMENTS - Schedule of components of Cash (paid) received for commodity derivative settlements (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Cash flows from operating activities |  |  |  |
Cash (paid) received for derivative settlements | $ (14,921,008) | $ 1,726,373 | $ (33,287,132) | $ 18,814,068
Oil |  |  |  |
Cash flows from operating activities |  |  |  |
Cash (paid) received for derivative settlements | $ (14,921,008) | $ 1,726,373 | (34,030,310) | $ 18,814,068
Natural Gas |  |  |  |
Cash flows from operating activities |  |  |  |
Cash (paid) received for derivative settlements |  |  | $ 743,178 |

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- Details
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