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ACQUISITIONS AND DIVESTITURES - Divestitures (Details) $ in Thousands |  | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jul. 10, 2017 USD ($) subsidiary | Dec. 31, 2019 USD ($) | Oct. 01, 2019 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Aug. 02, 2019 | Feb. 15, 2018 | Feb. 16, 2017 USD ($)
Divestitures |  |  |  |  |  |  |  |  |
Increase (Decrease) In Gains On Disposition Of Water Assets |  | $ 500 | $ 3,600 |  |  |  |  |  |
Proceeds received from sales of oil and natural gas assets |  |  | $ 1,247 | $ 29,029 | $ 3,816 |  |  |  |
Proceeds received from sale of other operating property and equipment |  | $ 6 |  |  | 216,083 |  |  |  |
Gain (loss) from sale of other operating property and equipment |  |  |  |  | (7,235) |  |  |  |
12.0% senior secured second lien notes due 2022 |  |  |  |  |  |  |  |  |
Divestitures |  |  |  |  |  |  |  |  |
Interest rate (as a percent) | 12.00% |  |  |  |  |  |  |  |
6.75% senior notes due 2025 |  |  |  |  |  |  |  |  |
Divestitures |  |  |  |  |  |  |  |  |
Repurchase of aggregate principal amount | $ 425,000 |  |  |  |  |  |  |  |
Aggregate principal amount drawn | $ 850,000 |  |  |  |  |  |  |  | $ 850,000
Interest rate (as a percent) | 6.75% |  |  | 6.75% |  |  | 6.75% | 6.75% | 6.75%
Gain on sale of oil and natural gas assets |  |  |  |  |  |  |  |  |
Divestitures |  |  |  |  |  |  |  |  |
Gain (loss) from sale of other operating property and equipment | $ 0 |  |  |  |  |  |  |  |
Williston Basin Assets |  |  |  |  |  |  |  |  |
Divestitures |  |  |  |  |  |  |  |  |
Gain (loss) from sale of other operating property and equipment | 0 |  |  |  | $ (7,200) | $ 485,900 |  |  |
Williston Basin Assets | Gas gathering systems and equipment |  |  |  |  |  |  |  |  |
Divestitures |  |  |  |  |  |  |  |  |
Proceeds received from sales of oil and natural gas assets | 1,390,000 |  |  |  |  |  |  |  |
Proceeds received from sale of other operating property and equipment | $ 10,900 |  |  |  |  |  |  |  |
Williston Basin Assets | Disposal Group Disposed of by Sale |  |  |  |  |  |  |  |  |
Divestitures |  |  |  |  |  |  |  |  |
Ownership percentage disposed | 100.00% |  |  |  |  |  |  |  |
Number of subsidiaries | subsidiary | 2 |  |  |  |  |  |  |  |
Proceeds received from sales of oil and natural gas assets | $ 1,400,000 |  |  |  |  |  |  |  |

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