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DERIVATIVE AND HEDGING ACTIVITIES - (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Oct. 01, 2019 | Dec. 31, 2019 | Oct. 01, 2019 | Sep. 30, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Derivative and hedging activities |  |  |  |  |  |
Financial Designation, Predecessor and Successor [Fixed List] | Predecessor | Successor | Predecessor | Predecessor | Predecessor | Predecessor
Asset derivative contracts |  | $ 5,219 |  |  | $ 69,717 |
Liability derivative contracts |  | (12,923) |  |  | (12,907) |
Derivatives not designated as hedging contracts |  |  |  |  |  |
Derivative and hedging activities |  |  |  |  |  |
Asset derivative contracts |  | 5,219 |  |  | 69,717 |
Liability derivative contracts |  | (12,923) |  |  | (12,907) |
Derivatives not designated as hedging contracts | Commodity contracts | Current assets - receivables from derivative contracts |  |  |  |  |  |
Derivative and hedging activities |  |  |  |  |  |
Asset derivative contracts |  | 4,995 |  |  | 57,280 |
Derivatives not designated as hedging contracts | Commodity contracts | Other noncurrent assets - receivables from derivative contracts |  |  |  |  |  |
Derivative and hedging activities |  |  |  |  |  |
Asset derivative contracts |  | 224 |  |  | 12,437 |
Derivatives not designated as hedging contracts | Commodity contracts | Current liabilities - liabilities from derivative contracts |  |  |  |  |  |
Derivative and hedging activities |  |  |  |  |  |
Liability derivative contracts |  | (8,069) |  |  | (3,768) |
Derivatives not designated as hedging contracts | Commodity contracts | Other noncurrent liabilities - liabilities from derivative contracts |  |  |  |  |  |
Derivative and hedging activities |  |  |  |  |  |
Liability derivative contracts |  | $ (4,854) |  |  | $ (9,139) |

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