Consolidated Statements of Changes in Equity - USD ($) $ in Thousands		Total	Noncontrolling Interests	Limited Partner Common Units	Limited Partner Subordinated Units Noble	General Partner
Capital, beginning at Dec. 31, 2017		$ 616,230	$ 141,230	$ 642,616	$ (168,136)	$ 520
Increase (Decrease) in Partners' Capital [Roll Forward]
Net Income		39,136	(225)	23,058	15,484	819
Contributions from Noncontrolling Interests		409,865	409,865
Distributions to Noncontrolling Interests		(3,007)	(3,007)
Distributions to Unitholders		(19,860)		(11,575)	(7,765)	(520)
Black Diamond Equity Ownership Promote Vesting	[1]		(2,429)	1,215	1,214
Unit-Based Compensation and Other		288		288
Capital, ending at Mar. 31, 2018		1,042,652	545,434	655,602	(159,203)	819
Capital, beginning at Dec. 31, 2017		616,230	141,230	642,616	(168,136)	520
Increase (Decrease) in Partners' Capital [Roll Forward]
Net Income		83,578
Capital, ending at Jun. 30, 2018		1,171,671	653,963	667,830	(151,256)	1,134
Capital, beginning at Mar. 31, 2018		1,042,652	545,434	655,602	(159,203)	819
Increase (Decrease) in Partners' Capital [Roll Forward]
Net Income		44,442	7,858	21,210	14,240	1,134
Contributions from Noncontrolling Interests		105,757	105,757
Distributions to Noncontrolling Interests		(522)	(522)
Distributions to Unitholders		(21,053)		(12,108)	(8,126)	(819)
Black Diamond Equity Ownership Promote Vesting	[1]		(4,564)	2,731	1,833
Unit-Based Compensation and Other		395		395
Capital, ending at Jun. 30, 2018		1,171,671	653,963	667,830	(151,256)	1,134
Capital, beginning at Dec. 31, 2018		1,316,233	744,153	699,866	(130,207)	2,421
Increase (Decrease) in Partners' Capital [Roll Forward]
Net Income		63,255	19,696	23,967	16,085	3,507
Contributions from Noncontrolling Interests		15,969	15,969
Distributions to Noncontrolling Interests		(4,669)	(4,669)
Distributions to Unitholders		(25,667)		(13,930)	(9,316)	(2,421)
Black Diamond Equity Ownership Promote Vesting	[1]		(6,838)	4,092	2,746
Unit-Based Compensation and Other		470		470
Capital, ending at Mar. 31, 2019		1,365,591	768,311	714,465	(120,692)	3,507
Capital, beginning at Dec. 31, 2018		1,316,233	744,153	699,866	(130,207)	2,421
Increase (Decrease) in Partners' Capital [Roll Forward]
Net Income		116,453
Capital, ending at Jun. 30, 2019		1,398,944	787,729	606,575	0	4,640
Capital, beginning at Mar. 31, 2019		1,365,591	768,311	714,465	(120,692)	3,507
Increase (Decrease) in Partners' Capital [Roll Forward]
Net Income		53,198	16,789	25,487	6,282	4,640
Contributions from Noncontrolling Interests		18,141	18,141
Distributions to Noncontrolling Interests		(7,316)	(7,316)
Distributions to Unitholders		(27,792)		(14,534)	(9,751)	(3,507)
Black Diamond Equity Ownership Promote Vesting	[1]		(8,196)	8,196
Unit-Based Compensation and Other		273		273
Conversion of Subordinated Units to Common Units	[2]			(124,161)	124,161
Preferred Equity Accretion		(3,151)		(3,151)
Capital, ending at Jun. 30, 2019		$ 1,398,944	$ 787,729	$ 606,575	$ 0	$ 4,640

[1] See Note 2. Basis of Presentation for further discussion of the Black Diamond equity ownership promote vesting.

[2] See Note 10. Partnership Distributions for further discussion of the conversion of Subordinated Units.