Acquisitions and Divestitures - Narrative (Details) MBoe in Thousands, $ in Thousands				12 Months Ended
	Dec. 06, 2018 USD ($) a MBoe numberOfDrillingLocations wells	Apr. 03, 2018 USD ($)	Apr. 03, 2017 USD ($) a MBoe wells	Dec. 31, 2019 USD ($) MBoe rig milesOfPipeline	Dec. 31, 2018 USD ($) MBoe rig	Dec. 31, 2017 USD ($) MBoe rig	Dec. 31, 2016 MBoe
Acquisitions and Divestitures [Line Items]
Proved Developed Reserves (Volume) | MBoe				71,924	111,576	112,961	99,079
Net book value of drilling rigs sold				$ 5,700
Gain (loss) on sale of drilling rigs				1,100
Reclassification from held-for-sale back to held and use				10,800
Assets held for sale				5,908	$ 22,511
Variable Interest Entity, Date Involvement Began		Apr. 03, 2018
EOG Acquisition
Acquisitions and Divestitures [Line Items]
Total consideration given			$ 54,332
Business Acquisition, Effective Date of Acquisition			Jan. 01, 2017
Proved Developed Reserves (Volume) | MBoe			3,200
Natural Gas Gathering System			1
Excalibur Acquisition
Acquisitions and Divestitures [Line Items]
Total consideration given	$ 29,633
Business Acquisition, Effective Date of Acquisition	Nov. 01, 2018
Proved Developed Reserves (Volume) | MBoe	2,600
Horizontal drilling locations | numberOfDrillingLocations	30
Acquired land with existing production capacity, percent	82.00%
Hoxbar | EOG Acquisition
Acquisitions and Divestitures [Line Items]
Area of Real Estate Property | a			8,300
Proved developed producing wells | wells			47
Acquired land with existing production capacity, percent			71.00%
Penn Sands | Excalibur Acquisition
Acquisitions and Divestitures [Line Items]
Area of Real Estate Property | a	8,667
Wells acquired | wells	44
Oil and Natural Gas
Acquisitions and Divestitures [Line Items]
Other acquisitions				3,700	600	$ 4,700
Proceeds from divestiture of assets				$ 21,800	$ 22,500	$ 18,600
Drilling Equipment
Acquisitions and Divestitures [Line Items]
Number of rigs sold | rig				6		0
Number of drilling rigs removed from service | rig					41
Impairment of Drilling Equipment						$ 0
Mid-Stream
Acquisitions and Divestitures [Line Items]
Business Acquisition, Effective Date of Acquisition				Dec. 01, 2019
Other acquisitions				$ 16,100
Pipeline acquired | milesOfPipeline				572
Mechanical drilling rigs | Drilling Equipment
Acquisitions and Divestitures [Line Items]
Number of drilling rigs removed from service | rig					29
SCR diesel-electric drilling rigs | Drilling Equipment
Acquisitions and Divestitures [Line Items]
Number of drilling rigs removed from service | rig					12
Ownership interest in Superior Pipeline Company, L.L.C.
Acquisitions and Divestitures [Line Items]
Proceeds from sale of non-controlling interest		$ 300,000
Superior Pipeline Company, L.L.C. | Ownership interest in Superior Pipeline Company, L.L.C.
Acquisitions and Divestitures [Line Items]
Ownership interest sold		50.00%