Statement of Consolidated Unitholders' Equity and Members' Equity - USD ($) $ in Thousands	Total	General Partner [Member]	Non-Controlling Interest [Member]	Limited Partner, Diamondback [Member]	Common Class A [Member]	Common Class A [Member] Limited Partner [Member]	Common Class A [Member] Limited Partner, Diamondback [Member]	Capital Unit, Class B [Member]	Capital Unit, Class B [Member] Limited Partner [Member]
Partners' Capital including noncontrolling interest at Dec. 31, 2015	$ 495,144	$ 0	$ 0			$ 495,144			$ 0
Common Stock, Shares, Outstanding at Dec. 31, 2015						79,726,000
Class B Units Outstanding at Dec. 31, 2015									0
Increase (Decrease) in Partners' Capital [Roll Forward]
Units issued in public offering						6,050,000	2,000,000
Net proceeds from the issuance of common units	93,462	0	0	$ 31,200		$ 93,462	$ 31,200		$ 0
Unit-based compensation, units						24,000
Unit-based compensation	3,815	0	0			$ 3,815			0
Distribution to public	(9,574)	0	0			(9,574)			0
Distribution to Diamondback	(55,250)	0	0			(55,250)			0
Net income (loss)	(10,899)	0	0			$ (10,899)			$ 0
Common Stock, Shares, Outstanding at Dec. 31, 2016						87,800,000
Class B Units Outstanding at Dec. 31, 2016									0
Partners' Capital including noncontrolling interest at Dec. 31, 2016	547,898	0	0			$ 547,898			$ 0
Increase (Decrease) in Partners' Capital [Roll Forward]
Units issued in public offering						25,175,000	700,000
Net proceeds from the issuance of common units	369,896	0	0	$ 10,067		$ 369,896	$ 10,067		0
Common units issued for acquisition, units						175,000
Common units issued for acquisition	3,050	0	0			$ 3,050
Unit-based compensation, units						32,000
Unit-based compensation	2,395	0	0			$ 2,395			0
Distribution to public	(41,367)	0	0			(41,367)			0
Distribution to Diamondback	(89,509)	0	0			(89,509)			0
Net income (loss)	$ 111,478	0	0			$ 111,478			$ 0
Common Stock, Shares, Outstanding at Dec. 31, 2017						113,882,000
Class B Units Outstanding at Dec. 31, 2017	0								0
Partners' Capital including noncontrolling interest at Dec. 31, 2017	$ 913,908	0	0			$ 913,908			$ 0
Increase (Decrease) in Partners' Capital [Roll Forward]
Unit exchange related to tax conversion, units					(73,150,000)	(73,150,000)		73,150,000	73,150,000
Unit exchange related to tax conversion	2,000	1,000	545,441			$ (545,441)			$ 1,000
Recapitalization related to tax conversion, units					731,500	732,000		(731,500)	(732,000)
Recapitalization related to tax conversion	(10)	0	0			$ 0			$ (10)
Units issued in public offering						10,080,000
Net proceeds from the issuance of common units	$ 303,121	0	0			$ 303,121			0
Unit-based compensation, units	110,411					103,000
Unit-based compensation	$ 2,763	0	0			$ 2,763			0
Partner's Capital Account, Units, Exercised						8,000
Partners' Capital Account, Option Exercise	140	0	0			$ 140			0
Distribution to public	(98,333)	0	0			(98,333)			0
Distribution to Diamondback	(155,109)	0	(85,454)			(69,655)			0
Distributions to General Partner	(31)	0	0			(31)			0
Change in ownership of consolidated subsidiaries, net	24,367	0	116,034			(91,667)			0
Net income (loss)	$ 262,877	0	118,919			$ 143,958			$ 0
Common Stock, Shares, Outstanding at Dec. 31, 2018						51,654,000
Class B Units Outstanding at Dec. 31, 2018	72,418,500								72,419,000
Partners' Capital including noncontrolling interest at Dec. 31, 2018	$ 1,237,042	1,000	694,940			$ 540,112			$ 990
Increase (Decrease) in Partners' Capital [Roll Forward]
Impact of adoption of ASU 2016-01						$ (18,651)
Net income (loss)	$ 40,705
Common Stock, Shares, Outstanding at Dec. 31, 2018						51,654,000
Class B Units Outstanding at Dec. 31, 2018	72,418,500								72,419,000
Partners' Capital including noncontrolling interest at Dec. 31, 2018	$ 1,237,042	1,000	694,940			$ 540,112			$ 990
Increase (Decrease) in Partners' Capital [Roll Forward]
Impact of adoption of ASU 2016-01	$ (18,651)	$ 0	$ 0			$ (18,651)			$ 0