Acquisitions and Divestitures (Details)							1 Months Ended	6 Months Ended	12 Months Ended	24 Months Ended
	Jul. 17, 2017 USD ($)	Jun. 30, 2017 USD ($)	Nov. 30, 2016 USD ($)	Nov. 22, 2016 USD ($) item	Jul. 05, 2016 USD ($)	Jun. 15, 2016 USD ($)	Dec. 31, 2016 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)
Carnero Processing Acquisition
Business Acquisition [Line Items]
Acquisition membership interest (as percent)				50.00%
Cash payment for acquisition				$ 55,500,000
Capital contribution commitments				24,500,000
Payments to acquire interest in joint venture			$ 14,100,000				$ 14,100,000	$ 14,100,000
Eagle Ford [Member]
Business Acquisition [Line Items]
Purchase price				$ 25,016,000
Carnero Gathering LLC, Joint Venture
Business Acquisition [Line Items]
Ownership interest (as a percent)					50.00%
Payments to acquire interest in joint venture					$ 37,000,000			$ 4,800,000	$ 8,100,000	$ 8,100,000
Assumption of capital commitments in joint venture					$ 7,400,000
TPL South Tex Processing Company LP
Business Acquisition [Line Items]
Ownership interest (as a percent)				50.00%	50.00%
SN Cotulla Assets, LLC and SN Palmetto, LLC
Business Acquisition [Line Items]
Producing wellbores | item				23
SN Cotulla Assets, LLC and SN Palmetto, LLC | Eagle Ford [Member]
Business Acquisition [Line Items]
Cash payment for acquisition				$ 24,200,000
Producing wellbores | item				11
Closing adjustments				$ 2,800,000
Texas Production Divestiture
Business Acquisition [Line Items]
Proceeds from divestiture of business		$ 6,300,000
Oklahoma Production Divestiture | Subsequent Event [Member]
Business Acquisition [Line Items]
Proceeds from divestiture of business	$ 5,500,000
Gateway Resources U.S.A., Inc.
Business Acquisition [Line Items]
Loss on disposition of intangible assets						$ 200,000
Gateway Resources U.S.A., Inc. | Mid-Continent Divestiture
Business Acquisition [Line Items]
Proceeds from divestiture of business						$ 7,120