Fresh Start Accounting (Reorganization Of Assets) (Details) $ in Thousands	Feb. 02, 2021 USD ($)
Fresh Start Accounting [Abstract]
Selected Enterprise Value win Range	$ 729,918
Plus: Cash and cash equivalents	172,768
Plus: Decommissioning Liabilities
Plus: Liabilities excluding the decommissioning liabilities	380,496
Plus: Decommissioning liabilities	173,622
Reorganization value	$ 1,456,804

Fresh Start Accounting [Abstract]

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Reorganization Value, Decommissioning Liabilities

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Reorganization Value, Decommissioning Liabilities [Abstract]

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Reorganization Value, Decommissioning Liabilities, Current

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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Amount of reorganization value related to cash in excess of normal operating requirements generated by operations. 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.

+ References

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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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