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Other Financial Information (Schedule of Renewable Identification Numbers (RINs) and Other Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Other Financial Information [Abstract]
Renewable Identification Numbers (RINs) sales	$ 43,868	$ 36,248	$ 82,643	$ 73,847
Other	702	664	2,168	1,613
Other operating revenues	$ 44,570	$ 36,912	$ 84,811	$ 75,460

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- Definition

Other Financial Information [Abstract]

+ References

No definition available.

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- Definition

Other Revenue, Net, Excluding Renewable Identification Numbers (RINs) Sales

+ References

No definition available.

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- Definition

Renewable Identification Number Revenue

+ References

No definition available.

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- Definition

Revenues from the sale of other goods or rendering of other services, not elsewhere specified in the taxonomy; net of (reduced by) sales adjustments, returns, allowances, and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(a),(d))
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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