Equity (Equity Rollforward) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Schedule of Capitalization, Equity [Line Items]
Partners' Capital	$ (27,094)us-gaap_PartnersCapital
Partners' Capital Account, Unit-based Compensation	(92)
Distribution Made to Limited Partner, Cash Distributions Declared	(15,575)
Net Income (Loss) Allocated to Limited Partners	15,323	10,933
Partners' Capital	(27,438)us-gaap_PartnersCapital
Common Units [Member]
Schedule of Capitalization, Equity [Line Items]
Distribution Made to Limited Partner, Cash Distributions Declared	(7,974)	(5,491)
Subordinated Units [Member]
Schedule of Capitalization, Equity [Line Items]
Distribution Made to Limited Partner, Cash Distributions Declared	(7,585)	(5,491)
Public [Member] \| Common Units [Member] \| Limited Partner [Member]
Schedule of Capitalization, Equity [Line Items]
Partners' Capital	327,592
Partners' Capital Account, Unit-based Compensation	(92)
Distribution Made to Limited Partner, Cash Distributions Declared	(5,261)
Net Income (Loss) Allocated to Limited Partners	5,183
Partners' Capital	327,422
Western Refining, Inc. [Member] \| General Partner [Member]
Schedule of Capitalization, Equity [Line Items]
Partners' Capital	0
Partners' Capital Account, Unit-based Compensation	0
Distribution Made to Limited Partner, Cash Distributions Declared	(16)
Net Income (Loss) Allocated to Limited Partners	0
Partners' Capital	(16)
Western Refining, Inc. [Member] \| Common Units [Member] \| Limited Partner [Member]
Schedule of Capitalization, Equity [Line Items]
Partners' Capital	(94,583)
Partners' Capital Account, Unit-based Compensation	0
Distribution Made to Limited Partner, Cash Distributions Declared	(2,713)
Net Income (Loss) Allocated to Limited Partners	2,671
Partners' Capital	(94,625)
Western Refining, Inc. [Member] \| Subordinated Units [Member] \| Limited Partner [Member]
Schedule of Capitalization, Equity [Line Items]
Partners' Capital	(260,103)
Partners' Capital Account, Unit-based Compensation	0
Distribution Made to Limited Partner, Cash Distributions Declared	(7,585)
Net Income (Loss) Allocated to Limited Partners	7,469
Partners' Capital	$ (260,219)

Amount of equity impact of cash distribution declared to unit-holder of limited partnership (LP).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 272

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 272

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055

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- Definition

Aggregate amount of net income allocated to limited partners.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770

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- Definition

The amount of ownership interest of different classes of partners in limited partnership.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 272

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 272

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055

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Total change in each class of partners' capital accounts during the year due to unit-based compensation. All partners include general, limited and preferred partners.

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