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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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- Definition

Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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