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FRESH START ACCOUNTING (Reconciliation of Enterprise Value and Reorganization Value) (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | May 17, 2021 | May 16, 2021 | Dec. 31, 2020
--- | --- | --- | --- | ---
Reorganizations [Abstract] |  |  |  |
Enterprise Value |  | $ 1,600,000 |  |
Plus: Cash and cash equivalents | $ 9,389 | 1,526 |  | $ 89,861
Less: Fair value of debt |  | (852,751) |  |
Successor equity value |  | 748,775 |  |
Enterprise Value |  | 1,600,000 |  |
Mezzanine equity | 55,860 | 55,000 |  |
Plus: Current and other liabilities |  | 686,489 |  |
Plus: Asset retirement obligations | $ 19,347 | 19,084 |  | $ 0
Less: Common stock reserved for settlement of claims post Emergence Date |  | (54,109) |  |
Reorganization value of Successor assets |  | $ 2,252,990 | $ 2,300,000 |

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