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Jones Contribution and Refinancing Plans - Additional Information (Detail) shares in Millions	Aug. 03, 2018 USD ($)	Jul. 13, 2018	May 09, 2018 USD ($) shares	Apr. 01, 2018 MBbls MMcf	Jul. 10, 2018 USD ($)
Subsequent Event | 9¾% Senior Notes due 2026
Debt Instrument [Line Items]
Principal amount of notes issued	$ 850,000,000
Interest rate on debt instrument	9.75%
Debt instrument, issue price principal amount percentage	95.988%
Interest payment terms	payable on February 15 and August 15
Offering being held in escrow pending closing expected to occurred date	Aug. 14, 2018
New Bank Credit Facility | Subsequent Event
Debt Instrument [Line Items]
Bank credit facility					$ 700,000,000
Tender Offer | Subsequent Event
Debt Instrument [Line Items]
Tender offer commencement date		Jul. 13, 2018
Arkoma and Williston
Debt Instrument [Line Items]
Approximate shares to be issued for oil and gas properties | shares			88.6
Oil and gas properties estimated fair value			$ 620,000,000
Approximate ownership percentage of pro forma outstanding shares			84.50%
Effective date of acquisition of properties				Apr. 01, 2018
Estimated oil proved reserves | MBbls				22,800
Estimated gas proved reserves | MMcf				49,300

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