SUPPLEMENTAL OIL AND GAS INFORMATION (UNAUDITED) - Standardized Measure of Discounted Future Net Cash Flows (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
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Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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Increase (Decrease) in Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Roll Forward] | |||
Beginning of Period | $ 1,678,061 | $ 1,879,643 | $ 753,986 |
Sales of Oil and Natural Gas Produced, Net of Production Costs | (177,932) | (424,548) | (381,961) |
Extensions and Discoveries | 52,232 | 282,528 | 549,353 |
Previously Estimated Development Cost Incurred During the Period | 78,633 | 100,987 | 115,542 |
Net Change of Prices and Production Costs | (815,278) | (680,119) | 484,122 |
Change in Future Development Costs | (150,991) | (174,729) | (91,829) |
Revisions of Quantity and Timing Estimates | (280,481) | (226,721) | 66,185 |
Accretion of Discount | 182,202 | 218,023 | 75,800 |
Change in Income Taxes | 143,438 | 156,621 | (296,571) |
Purchases of Minerals in Place | 0 | 338,289 | 502,193 |
Other | 2,127 | 208,087 | 19,902 |
End of Period | $ 712,011 | $ 1,678,061 | $ 1,879,643 |
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- Definition Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of extensions, discoveries and improved recovery of proved oil and gas reserves. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of change in estimated future development costs. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of change in the estimated future income tax on future pretax net cash flows related to the entity's proved oil and gas reserves. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of increase in standardized measure of discounted future net cash flow as a result of purchases of minerals in place. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of change in sales and transfer prices and in production (lifting) costs related to future production. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of increase in standardized measure of discounted future net cash flow as a result of previously estimated development costs incurred. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of revisions of estimated quantity of oil and gas in proved reserves. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of (increase) decrease in standardized measure of discounted future net cash flow as a result of sales and transfers of oil and gas produced. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of changes from other sources. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of accretion of discount for the standardized measure of discounted future net cash flow related to proved oil and gas reserves. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of discounted future accumulated cash inflow relating to proved oil and gas reserves. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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