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FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands | 1 Months Ended | 2 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Oct. 31, 2019 | Dec. 31, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019
Assets |  |  |  |  |  |  |
Asset transfers between levels | $ 0 | $ 0 |  |  | $ 0 |  |
Liabilities |  |  |  |  |  |  |
Liability transfers between levels | $ 0 | $ 0 |  |  | $ 0 |  |
Financial Designation, Predecessor and Successor [Fixed List] | Successor | Successor | Successor | Predecessor | Successor | Predecessor | Successor
Total |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Assets from derivative contracts |  | $ 5,219 |  |  |  |  | $ 5,219
Liabilities |  |  |  |  |  |  |
Liabilities from derivative contracts |  | 12,923 |  |  |  |  | 12,923
Level 2 |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Assets from derivative contracts |  | 5,219 |  |  |  |  | 5,219
Liabilities |  |  |  |  |  |  |
Liabilities from derivative contracts |  | $ 12,923 |  |  |  |  | $ 12,923
Recurring | Total |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Assets from derivative contracts |  |  | $ 51,551 |  | $ 51,551 |  |
Liabilities |  |  |  |  |  |  |
Liabilities from derivative contracts |  |  | 14,097 |  | 14,097 |  |
Recurring | Level 2 |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Assets from derivative contracts |  |  | 51,551 |  | 51,551 |  |
Liabilities |  |  |  |  |  |  |
Liabilities from derivative contracts |  |  | $ 14,097 |  | $ 14,097 |  |

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