Earnings per Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017		Mar. 31, 2016		Dec. 31, 2016	Oct. 30, 2015
Earnings Per Share [Abstract]
Net income	$ 19,886		$ 5,757
Less net loss attributable to General Partner	0		(8,250)	[1]
Net Income (Loss) Allocated to Limited Partners	19,886		14,007
Incentive Distribution, Distribution	(2,147)		(761)
Distribution Made to Limited Partner, Cash Distributions Declared	(28,783)
Net loss attributable to General Partner	0		(8,250)
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic	(8,897)		(5,303)
TexNew Mex 16 inch pipeline [Member] | Western Refining, Inc. [Member]
Earnings Per Share [Abstract]
Economic Rights, Crude Oil Throughput, Percent						80.00%
Common Units [Member]
Earnings Per Share [Abstract]
Distribution Made to Limited Partner, Cash Distributions Declared	(16,657)		(9,595)
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic	(6,675)		(2,743)
Participating Securities, Distributed and Undistributed Earnings (Loss), Basic	$ 9,982		$ 6,852
Weighted Average Number of Shares Outstanding, Basic	45,681,000		24,448,000
Weighted Average Number of Shares Outstanding, Diluted	45,688,000		24,454,000
Earnings Per Share, Basic	$ 0.22		$ 0.28
Earnings Per Share, Diluted	$ 0.22		$ 0.28
Common Units [Member] | Western Refining, Inc. [Member]
Earnings Per Share [Abstract]
Limited Partners' Capital Account, Units Outstanding	32,018,847				9,207,847
Subordinated Units [Member]
Earnings Per Share [Abstract]
Distribution Made to Limited Partner, Cash Distributions Declared	$ (9,979)		$ (8,954)
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic	(2,222)	[2]	(2,560)
Participating Securities, Distributed and Undistributed Earnings (Loss), Basic	$ 7,757		$ 6,394
Weighted Average Number of Shares Outstanding, Basic and Diluted	15,207,000		22,811,000
Earnings Per Share, Basic and Diluted	$ 0.51		$ 0.28
Weighted Average Number Diluted Shares Outstanding Adjustment	0
Subordinated Units [Member] | Western Refining, Inc. [Member]
Earnings Per Share [Abstract]
Limited Partners' Capital Account, Units Outstanding	0				22,811,000
General Partner [Member]
Earnings Per Share [Abstract]
Participating Securities, Distributed and Undistributed Earnings (Loss), Basic	$ 2,147		$ (7,489)

[1] We apply the two-class method to calculate earnings per unit and allocate the results of operations of the St. Paul Park Logistics Assets prior to the St. Paul Park Logistics Transaction entirely to our general partner. The limited partners had no rights to the results of operations before the acquisition.

[2] On March 2, 2017, the 22,811,000 subordinated units held by Western converted into common units on a one-for-one basis and thereafter participated on terms equal with all other common units in distributions of available cash. Distributions greater than earnings were allocated to the subordinated units through March 2, 2017.