Earnings per Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016		Jun. 30, 2017	Jun. 30, 2016		Dec. 31, 2016	Oct. 30, 2015
Earnings Per Share [Abstract]
Net income	$ 18,728	$ 9,980		$ 38,614	$ 15,737
Less net loss attributable to General Partner	0	(7,894)	[1]	0	(16,144)	[1]
Net Income (Loss) Allocated to Limited Partners	18,728	17,874		38,614	31,881
Distribution Made to Limited Partner, Cash Distributions Declared				(60,172)
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic	(14,505)	(2,086)		(25,352)	(7,389)
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]
Net Income (Loss) Allocated to Limited Partners	14,747	8,739		27,725	15,558
Distributed Earnings	29,252	9,858		49,930	19,453
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic	$ (14,505)	$ (1,119)		$ (22,205)	$ (3,895)
Weighted Average Number of Shares Outstanding, Basic	60,962,000	26,409,000		53,364,000	25,429,000
Weighted Average Number of Shares Outstanding, Diluted	60,971,000	26,427,000		53,372,000	25,441,000
Earnings Per Share, Basic	$ 0.24	$ 0.33		$ 0.52	$ 0.61
Earnings Per Share, Diluted	$ 0.24	$ 0.33		$ 0.52	$ 0.61
Common Units [Member] | Western Refining, Inc. [Member]
Earnings Per Share [Abstract]
Limited Partners' Capital Account, Units Outstanding	32,018,847			32,018,847			9,207,847
Subordinated Units [Member]
Earnings Per Share [Abstract]
Net Income (Loss) Allocated to Limited Partners	$ 0	$ 8,214		$ 3,845	$ 14,641
Distributed Earnings	0	9,181		6,992	18,135
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic	$ 0	$ (967)		$ (3,147)	$ (3,494)
Weighted Average Number of Shares Outstanding, Basic and Diluted	0	22,811,000		7,562,000	22,811,000
Earnings Per Share, Basic and Diluted	$ 0.00	$ 0.36		$ 0.51	$ 0.64
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			0			22,811,000
General Partner [Member]
Earnings Per Share [Abstract]
Distributed Earnings	$ 3,981	$ 921		$ 7,044	$ 1,682
Net loss attributable to General Partner	3,981	(6,973)		7,044	(14,462)
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic	$ 0	$ (7,894)		$ 0	$ (16,144)

[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.