Asset Retirement Obligations Asset Retirement Obligations (Details) - USD ($) $ in Thousands	4 Months Ended	8 Months Ended	12 Months Ended
Apr. 22, 2016	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2015
Predecessor [Member]
Asset Retirement Obligation	$ 59,024			$ 63,555
Accretion expense	1,610			$ 5,572
Liabilities incurred for new wells and facilities construction	1
Reductions due to sold and abandoned wells	(6,545)
Asset Retirement Obligation, Liabilities Plugged	(85)
Revisions in estimates	488
Fresh Start Adjustment for ARO	5,216
Successor [Member]
Asset Retirement Obligation	$ 64,240	$ 32,256	$ 10,787
Accretion expense		2,878	2,322
Liabilities incurred for new wells and facilities construction		34	253
Reductions due to sold and abandoned wells		(42,857)	(21,466)
Asset Retirement Obligation, Liabilities Plugged		(916)	(2,366)
Revisions in estimates		8,877	(212)
Asset retirement obligation - current portion		$ 9,965	$ 2,109

Asset Retirement Obligation, Liabilities Plugged

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- Definition

Fresh Start Adjustment for ARO

+ References

No definition available.

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- Definition

The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

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- Definition

Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)(3)
-URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6392676&loc=d3e7480-110848

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- Definition

Current portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

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- Definition

Amount of asset retirement obligations incurred during the period.

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Amount of asset retirement obligations settled, or otherwise disposed of, during the period. This may include asset retirement obligations transferred to third parties associated with the sale of a long-lived asset.

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- Definition

Amount of increase (decrease) in the asset retirement obligation from changes in the amount or timing of the estimated cash flows associated with the settlement of the obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)(4)
-URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 35
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6392603&loc=d3e7123-110846

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