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FAIR VALUE MEASUREMENTS (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, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Assets |  |  |  |  |  |  |
Asset transfers between levels |  |  |  |  | $ 0 |  |
Liabilities |  |  |  |  |  |  |
Liability transfers between levels |  |  |  |  | $ 0 |  |
Financial Designation, Predecessor and Successor [Fixed List] | Predecessor | Successor | Predecessor | Predecessor | Successor | Successor | Predecessor
Total |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Financial Designation, Predecessor and Successor [Fixed List] |  |  |  |  | Successor |  |
Level 1 |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Financial Designation, Predecessor and Successor [Fixed List] |  |  |  |  | Successor |  |
Level 2 |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Financial Designation, Predecessor and Successor [Fixed List] |  |  |  |  | Successor |  |
Level 3 |  |  |  |  |  |  |
Liabilities |  |  |  |  |  |  |
Financial Designation, Predecessor and Successor [Fixed List] |  |  |  |  | Successor |  |
Recurring | Total |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Receivables from derivative contracts |  | $ 5,219 |  |  | $ 12,568 | $ 5,219 |
Liabilities |  |  |  |  |  |  |
Liabilities from derivative contracts |  | 12,923 |  |  | 26,416 | 12,923 |
Recurring | Level 2 |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Receivables from derivative contracts |  | 5,219 |  |  | 12,568 | 5,219 |
Liabilities |  |  |  |  |  |  |
Liabilities from derivative contracts |  | $ 12,923 |  |  | $ 26,416 | $ 12,923 |

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