Intangible Assets, Goodwill And Other Assets (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Intangible Assets, Goodwill And Other Assets [Line Items]
Amortization of Intangible Assets	$ 20,044	$ 13,436	$ 14,560
Amortization of CO2 assets	5,900	4,200	$ 3,900
GOODWILL	325,046	325,046
Goodwill, Impairment Loss	0	0
Supply And Logistics [Member]
Intangible Assets, Goodwill And Other Assets [Line Items]
GOODWILL	23,100	23,100
Refinery Services [Member]
Intangible Assets, Goodwill And Other Assets [Line Items]
GOODWILL	$ 301,900	$ 301,900