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FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($) |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Nov. 01, 2021 | Apr. 01, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Oct. 13, 2021
Financial assets and liabilities accounted for at fair value |  |  |  |  |  |
Proved oil and gas property impairments |  |  | $ 0 | $ 0 | $ 0 |
Senior Notes Due 2026, 5.0% | Senior Notes |  |  |  |  |  |
Financial assets and liabilities accounted for at fair value |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  |  | 5.00%
Senior Notes Due 2026, 5.0% | Senior Notes | Level 1 |  |  |  |  |  |
Financial assets and liabilities accounted for at fair value |  |  |  |  |  |
Long-term debt, fair value |  |  | 404,700,000 |  |  |
HighPoint |  |  |  |  |  |
Financial assets and liabilities accounted for at fair value |  |  |  |  |  |
Fair value allocated to consideration transferred |  | $ 374,933,000 |  |  |  |
HighPoint | Senior Notes Due 2026, 7.50% | Senior Notes |  |  |  |  |  |
Financial assets and liabilities accounted for at fair value |  |  |  |  |  |
Interest rate (as a percent) |  | 7.50% |  |  |  |
HighPoint | Senior Notes Due 2026, 7.50% | Senior Notes | Level 1 |  |  |  |  |  |
Financial assets and liabilities accounted for at fair value |  |  |  |  |  |
Long-term debt, fair value |  |  | $ 101,000,000 |  |  |
Extraction | Tranche A and Tranche B Warrants |  |  |  |  |  |
Financial assets and liabilities accounted for at fair value |  |  |  |  |  |
Fair value allocated to consideration transferred | $ 77,463,000 |  |  |  |  |

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