Emergence from Voluntary Reorganization under Chapter 11 - Reorganization Items, Net (Details) - USD ($) $ in Thousands	1 Months Ended	2 Months Ended	11 Months Ended	12 Months Ended
Dec. 31, 2020	Nov. 30, 2020	Nov. 30, 2020	Dec. 31, 2019
Reorganizations [Abstract]
Unamortized discounts and debt issuance costs	$ 0	$ (3,243)	$ 85,483	$ 0
Professional fees and other		(11,847)
Fresh start valuation adjustments		(93,282)
Gain on settlement of liabilities subject to compromise		181,843
Reorganization items, net	$ 0	$ 73,471	$ 73,471	$ 0

Amount of net gain (loss) on settlement of other claims for entities in bankruptcy, reported as a reorganization item.

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-Publisher FASB
-Name Accounting Standards Codification
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Amount of reorganization items related to legal and advisory professional fees related to entities in bankruptcy.

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Amount recognized from the revaluation of assets and liabilities.

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Amount of write-off of debt issuance costs and debt discounts related to prepetition debt obligations.

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Total amount of reorganization items.

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