Segment Information (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014 bbl mi	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014 operating_segments bbl mi	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Revenues, third-party									$ 2,490,313,000	$ 2,524,595,000	$ 2,622,610,000
Revenues, affiliate									1,011,575,000	882,533,000	852,310,000
Operating Income (Loss)	22,028,000	16,718,000	17,473,000	18,283,000	10,513,000	(21,214,000)	(16,989,000)	(13,837,000)	74,502,000	(41,527,000)	(50,488,000)
Other income, net									(2,250,000)	(172,000)	274,000
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest									72,252,000	(41,699,000)	(50,214,000)
Depreciation and amortization									17,372,000	15,970,000	14,315,000
Payments to Acquire Productive Assets									22,325,000	72,398,000	28,076,000
Assets	378,273,000				307,043,000				378,273,000	307,043,000	185,462,000
Number of Reportable Segments									2
Pipeline, Miles	300								300
Active Storage Capacity	8,000,000								8,000,000
Logistics Segment [Member]
Segment Reporting Information [Line Items]
Pipeline, Miles	300								300
Operating Segments [Member] | Wholesale Segment [Member]
Segment Reporting Information [Line Items]
Revenues, third-party									2,487,595,000	2,522,852,000	2,621,932,000
Revenues, affiliate									873,589,000	853,447,000	849,143,000
Operating Income (Loss)									28,234,000	20,790,000	23,974,000	[1]
Depreciation and amortization									3,893,000	2,928,000	2,695,000
Payments to Acquire Productive Assets									7,868,000	11,413,000	2,351,000
Assets	160,158,000				61,504,000				160,158,000	61,504,000	50,131,000
Operating Segments [Member] | Logistics Segment [Member]
Segment Reporting Information [Line Items]
Revenues, third-party									2,718,000	1,743,000	678,000
Revenues, affiliate									137,986,000	29,086,000	3,167,000
Operating Income (Loss)									56,928,000	(57,410,000)	(69,251,000)
Depreciation and amortization									13,479,000	13,042,000	11,620,000
Payments to Acquire Productive Assets									14,457,000	60,985,000	25,725,000
Assets	159,643,000				245,539,000				159,643,000	245,539,000	135,331,000
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Revenues, third-party									0	0	0
Revenues, affiliate									0	0	0
Operating Income (Loss)									(10,660,000)	(4,907,000)	(5,211,000)
Depreciation and amortization									0	0	0
Payments to Acquire Productive Assets									0	0	0
Assets	58,472,000				0				58,472,000	0	0
Crude Oil Storage Tanks [Member] | Logistics Segment [Member]
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Operated, Number of Significant Assets	31								31
Active Storage Capacity	620,000								620,000
Truck Loading and Unloading Locations [Member] | Logistics Segment [Member]
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Operated, Number of Significant Assets	8								8
Pump Station [Member] | Logistics Segment [Member]
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Operated, Number of Significant Assets	14								14
Storage Tanks [Member] | Logistics Segment [Member]
Segment Reporting Information [Line Items]
Active Storage Capacity	7,400,000								7,400,000
Cost of Sales [Member] | Operating Segments [Member] | Wholesale Segment [Member]
Segment Reporting Information [Line Items]
Derivative, Gain (Loss) on Derivative, Net											$ 23,600,000

[1] The effect of our economic hedging activity is included within operating income of our wholesale segment as a component of cost of products sold. Wholesale cost of products sold include $23.6 million in net realized economic hedging losses for the year ended December 31, 2012.