Fixed Assets And Asset Retirement Obligations (Schedule Of Fixed Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 1,327,974	$ 723,225
Accumulated depreciation	(199,230)	(157,944)
Net fixed assets	1,128,744	565,281
Pipelines And Related Assets [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	338,920	226,831
Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	173,092	87,502
Transportation Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	19,140	21,170
Marine Vessels [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	554,679	298,054
Land, Buildings And Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	30,170	15,606
Office Equipment, Furniture And Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	5,633	4,964
Construction In Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	183,037	52,541
Property, Plant And Equipment, Other Types [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 23,303	$ 16,557