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FRESH START ACCOUNTING (Reorganization Adjustment to Prepaid Expenses and Other Current Assets) (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | May 17, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Reorganization, Chapter 11 [Line Items] |  |  |
Prepaid expenses and other current assets | $ 24,737 | $ 25,295 | $ 160,664
Release of escrow funds as a result of the Plan |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |
Prepaid expenses and other current assets |  | (63,068) |
Recognition of counterparty credits due to settlements effectuated at Emergence |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |
Prepaid expenses and other current assets |  | 4,247 |
Prepaid compensation earned at Emergence |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |
Prepaid expenses and other current assets |  | (2,073) |
Reorganization Adjustments |  |  |
Reorganization, Chapter 11 [Line Items] |  |  |
Prepaid expenses and other current assets |  | $ (60,894) |

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