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Supplemental Information on Oil and Natural Gas Producing Activities (Unaudited) - Costs Incurred in Oil and Natural Gas Property Acquisition, Exploration and Development (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2016	Oct. 01, 2016	Dec. 31, 2017	Dec. 31, 2015
Successor
Acquisitions of properties
Proved	$ 5,142		$ 7,092
Unproved	5,491		91,139
Exploration	0		8,850
Development	27,429		187,264
Total cost incurred	$ 38,062		$ 294,345
Predecessor
Acquisitions of properties
Proved		$ 3,897		$ 35,376
Unproved		1,899		210,065
Exploration		1,234		29,297
Development		149,924		571,562
Total cost incurred		$ 156,954		846,300
Predecessor | Seismic Costs
Acquisitions of properties
Exploration				$ 7,100

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Costs incurred, including capitalized costs and costs charged to expense, associated with the acquisition of oil and gas properties that have proved reserves.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 235
-Section 50
-Paragraph 18
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62014-109447

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Costs incurred, including capitalized costs and costs charged to expense, associated with the acquisition of oil and gas properties that have unproved reserves.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 235
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Development costs incurred, including capitalized costs and costs charged to expense, in oil and gas activities.

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-Topic 932
-SubTopic 235
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Exploration costs incurred, including capitalized costs and costs charged to expense, in oil and gas activities.

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-Topic 932
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Amount of costs incurred related to oil and gas property acquisition, exploration and development activities, including capitalized costs and costs charged to expense.

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