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Intangible Assets, Goodwill And Other Assets (Schedule of Intangible Assets) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, Gross Carrying Amount | $ 395,692 | $ 389,942
Intangible assets, Accumulated Amortization | 190,805 | 166,496
Intangible assets, Carrying Value | $ 204,887 | 223,446
Refinery Services Customer Relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, Weighted Amortization Period in Years | 5 years |
Intangible assets, Gross Carrying Amount | $ 94,654 | 94,654
Intangible assets, Accumulated Amortization | 89,756 | 86,285
Intangible assets, Carrying Value | $ 4,898 | 8,369
Refinery Services Licensing Agreements [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, Weighted Amortization Period in Years | 6 years |
Intangible assets, Gross Carrying Amount | $ 38,678 | 38,678
Intangible assets, Accumulated Amortization | 34,204 | 31,694
Intangible assets, Carrying Value | 4,474 | 6,984
Refinery Services [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, Gross Carrying Amount | 133,332 | 133,332
Intangible assets, Accumulated Amortization | 123,960 | 117,979
Intangible assets, Carrying Value | $ 9,372 | 15,353
Supply And Logistics Customer Relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, Weighted Amortization Period in Years | 5 years |
Intangible assets, Gross Carrying Amount | $ 35,430 | 35,430
Intangible assets, Accumulated Amortization | 33,676 | 32,044
Intangible assets, Carrying Value | $ 1,754 | 3,386
Supply And Logistics Intangibles associated with lease [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, Weighted Amortization Period in Years | 15 years |
Intangible assets, Gross Carrying Amount | $ 13,260 | 13,260
Intangible assets, Accumulated Amortization | 4,459 | 3,986
Intangible assets, Carrying Value | 8,801 | 9,274
Supply And Logistics [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, Gross Carrying Amount | 48,690 | 48,690
Intangible assets, Accumulated Amortization | 38,135 | 36,030
Intangible assets, Carrying Value | $ 10,555 | 12,660
Marine Transportation Contracts [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, Weighted Amortization Period in Years | 5 years |
Intangible assets, Gross Carrying Amount | $ 27,000 | 27,000
Intangible assets, Accumulated Amortization | 6,300 | 900
Intangible assets, Carrying Value | $ 20,700 | 26,100
Offshore Pipeline Contracts [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, Weighted Amortization Period in Years | 19 years |
Intangible assets, Gross Carrying Amount | $ 158,101 | 158,101
Intangible assets, Accumulated Amortization | 11,788 | 3,467
Intangible assets, Carrying Value | $ 146,313 | 154,634
Other [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, Weighted Amortization Period in Years | 5 years |
Intangible assets, Gross Carrying Amount | $ 28,569 | 22,819
Intangible assets, Accumulated Amortization | 10,622 | 8,120
Intangible assets, Carrying Value | $ 17,947 | $ 14,699

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- Definition 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 No definition available. + Details
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- Definition 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=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before 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=66006027&loc=d3e16323-109275 + Details
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