Intangible Assets, Goodwill And Other Assets (Schedule Of Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross Carrying Amount	$ 203,378	$ 256,311
Intangible assets, Accumulated Amortization	140,450	181,246
Intangible assets, Carrying Value	62,928	75,065
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	76,283	69,167
Intangible assets, Carrying Value	18,371	25,487
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	26,055	22,892
Intangible assets, Carrying Value	12,623	15,786
Refinery Services Supplier Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Weighted Amortization Period in Years	2 years
Intangible assets, Gross Carrying Amount	0	36,469
Intangible assets, Accumulated Amortization	0	36,469
Intangible assets, Carrying Value	0	0
Refinery Services [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross Carrying Amount	133,332	169,801
Intangible assets, Accumulated Amortization	102,338	128,528
Intangible assets, Carrying Value	30,994	41,273
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	28,568	26,403
Intangible assets, Carrying Value	6,862	9,027
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	3,039	2,565
Intangible assets, Carrying Value	10,221	10,695
Supply And Logistics Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Weighted Amortization Period in Years	4 years
Intangible assets, Gross Carrying Amount	0	18,888
Intangible assets, Accumulated Amortization	0	18,888
Intangible assets, Carrying Value	0	0
Supply And Logistics [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross Carrying Amount	48,690	67,578
Intangible assets, Accumulated Amortization	31,607	47,856
Intangible assets, Carrying Value	17,083	19,722
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Weighted Amortization Period in Years	5 years
Intangible assets, Gross Carrying Amount	21,356	18,932
Intangible assets, Accumulated Amortization	6,505	4,862
Intangible assets, Carrying Value	$ 14,851	$ 14,070