Intangible Assets, Goodwill And Other Assets (Schedule Of Estimated Amortization Expense) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
2012	$ 20,124
2013	14,432
2014	12,173
2015	10,365
2016	8,903
Refinery Services Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
2012	7,056
2013	7,116
2014	5,597
2015	4,405
2016	3,471
Supply And Logistics Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
2012	2,819
2013	2,165
2014	1,660
2015	1,275
2016	981
Refinery Services Supplier Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
2012	2,364
Refinery Services Licensing Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
2012	3,416
2013	3,163
2014	2,928
2015	2,711
2016	2,510
Supply And Logistics Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
2012	1,840
Supply And Logistics Lease [Member]
Finite-Lived Intangible Assets [Line Items]
2012	474
2013	474
2014	474
2015	474
2016	474
Other [Member]
Finite-Lived Intangible Assets [Line Items]
2012	2,155
2013	1,514
2014	1,514
2015	1,500
2016	$ 1,467

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The amount of amortization expense expected to be recognized during year five of the five succeeding fiscal years.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(3)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: 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=6905858&loc=d3e16323-109275

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The amount of amortization expense expected to be recognized during year four of the five succeeding fiscal years.

+ References

+ Details

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The amount of amortization expense expected to be recognized during year one of the five succeeding fiscal years.

+ References

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The amount of amortization expense expected to be recognized during year three of the five succeeding fiscal years.

+ References

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The amount of amortization expense expected to be recognized during year two of the five succeeding fiscal years.

+ References

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