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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 45
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=64805424&loc=d3e55730-112764

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Section 55
-Paragraph 3
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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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Total amount of reorganization items.

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Note 2 - Emergence From Bankruptcy Proceedings and Fresh Start Accounting - Components of Reorganization Items (Details) - USD ($) $ in Thousands		2 Months Ended	10 Months Ended	12 Months Ended
	May 17, 2017	Dec. 31, 2017	Nov. 14, 2017	Dec. 31, 2016	Dec. 31, 2015
Gains on the settlement of liabilities subject to compromise
Fresh start accounting adjustments
Legal and professional fees and expenses		969
Total reduction in value of assets		$ 969
Predecessor [Member]
Gains on the settlement of liabilities subject to compromise	$ (343,000)		$ (342,969)
Fresh start accounting adjustments			633,970
Legal and professional fees and expenses			28,921
Total reduction in value of assets			$ 319,922