Transportation Agreements (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2014 Y	Dec. 31, 2013
Finite-Lived Intangible Assets, Net [Abstract]
Transportation agreements, gross	$ 134,164	$ 134,164
Less accumulated amortization	48,251	46,514
Transportation agreements, net	85,913	87,650
Alon transportation agreement
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Useful Life (years)	30 years
Finite-Lived Intangible Assets, Useful Life, Initial Term (years)	15
Finite-Lived Intangible Assets, Useful Life, Extension Period (years)	15
Finite-Lived Intangible Assets, Net [Abstract]
Transportation agreements, gross	59,933	59,933
HFC transportation agreement
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Useful Life (years)	15 years
Finite-Lived Intangible Assets, Net [Abstract]
Transportation agreements, gross	$ 74,231	$ 74,231

Finite-Lived Intangible Assets, Useful Life, Extension Period

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- Definition

Finite-Lived Intangible Assets, Useful Life, Initial Term

+ References

No definition available.

+ Details

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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