Intangible Assets, Goodwill And Other Assets (Schedule Of Estimated Amortization Expense) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
2013	$ 14,622
2014	12,344
2015	10,536
2016	9,074
2017	7,911
Refinery Services Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
2013	7,116
2014	5,597
2015	4,405
2016	3,471
2017	2,737
Refinery Services Licensing Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
2013	3,163
2014	2,928
2015	2,711
2016	2,510
2017	2,324
Supply And Logistics Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
2013	2,165
2014	1,660
2015	1,275
2016	981
2017	757
Supply And Logistics Intangibles associated with lease [Member]
Finite-Lived Intangible Assets [Line Items]
2013	474
2014	474
2015	474
2016	474
2017	474
Other [Member]
Finite-Lived Intangible Assets [Line Items]
2013	1,704
2014	1,685
2015	1,671
2016	1,638
2017	$ 1,619

Amount of amortization expense expected to be recognized during the next fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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)(3)

-URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275

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Amount of amortization expense expected to be recognized during the fifth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense expected to be recognized during the fourth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense expected to be recognized during the third fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense expected to be recognized during the second fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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