Fresh Start Accounting (Schedule of Reconciliation of Enterprise Value to the Reorganization Value (Details) $ in Thousands	Sep. 01, 2020 USD ($)
Reorganizations [Abstract]
Enterprise value	$ 559,205
Plus: Cash and cash equivalents	25,482
Plus: Restricted cash	7,458
Plus: Current liabilities (excluding the fair value of capital leases and current debt)	86,897
Plus: Long-term asset retirement obligation	22,415
Plus: Other long-term liabilities (excluding long-term asset retirement obligation)	24,886
Reorganization value of Successor assets	$ 726,343

Postconfirmation, Current Liabilities less capital leases

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Amount of cash and cash equivalents at the balance sheet date after fresh-start adjustments.

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Amount attributed to the reconstituted entity, as well as the expected net realizable value of those assets that will be disposed before reconstitution occurs.

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Amount of reorganization value related to present value of discounted cash flows of the emerging entity. Reorganization value is the amount attributed to the reconstituted entity, as well as the expected net realizable value of those assets that will be disposed before reconstitution occurs.

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