Supplemental Information About Oil & Natural Gas Producing Activities (Unaudited) - Costs Incurred For Oil and Natural Gas Producing Activities (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
Dec. 31, 2016	Oct. 10, 2016	Dec. 31, 2015	Dec. 31, 2014
Successor
Acquisition costs:
Proved properties	$ 561,251
Unproved properties	1,905,660
Development costs	44,602
Exploration costs	844
Total	$ 2,512,357
Predecessor
Acquisition costs:
Proved properties		$ 16,386	$ 14,268	$ 5,758
Unproved properties		39,399	28,955	16,409
Development costs		53,512	87,452	324,802
Exploration costs		0	84	0
Total		$ 109,297	$ 130,759	$ 346,969

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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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-Name Accounting Standards Codification
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 235
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-URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62038-109447

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Development costs incurred, including capitalized costs and costs charged to expense, in oil and gas activities.

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Exploration costs incurred, including capitalized costs and costs charged to expense, in oil and gas activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Exploration
-URI http://asc.fasb.org/extlink&oid=6512329

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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.

+ References

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