Investments (Details) - USD ($) $ in Thousands			1 Months Ended	12 Months Ended
	Nov. 22, 2016	Jul. 05, 2016	Jul. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Capital investments				$ 107,320
Estimated earnout accrued				4,270
Earnings in equity investments				2,382	$ 81
Amortization of intangible asset				13,756	2,805
Cash distributions				6,696	$ 1,219
Carnero Gathering LLC, Joint Venture
Schedule of Equity Method Investments [Line Items]
Ownership interest (as a percent)		50.00%	50.00%
Payments to acquire interest in joint venture		$ 37,000	$ 37,000
Assumption of capital commitments in joint venture		$ 7,400	$ 7,400	4,300
Payments of capital commitments from joint venture				3,300
Capital investments				40,300
Agreement term		15 years
Estimated fair value of contingent consideration				4,300
Earnings in equity investments				2,800
Cash distributions				3,000
Carnero Gathering LLC, Joint Venture | Customer Relationships
Schedule of Equity Method Investments [Line Items]
Intangible asset, fair value		$ 13,000
Amortization of intangible asset				400
Carnero Processing Joint Venture
Schedule of Equity Method Investments [Line Items]
Ownership interest (as a percent)	50.00%
Payments to acquire interest in joint venture	$ 55,500
Assumption of capital commitments in joint venture	24,500			10,600
Payments of capital commitments from joint venture				10,500
Capital investments	$ 48,000			66,000
Earnings in equity investments				$ 100
TPL South Tex Processing Company LP
Schedule of Equity Method Investments [Line Items]
Ownership interest (as a percent)	50.00%	50.00%
SN Midstream | Carnero Gathering LLC, Joint Venture
Schedule of Equity Method Investments [Line Items]
Capital investments		$ 26,000