Segment Data (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013		Dec. 31, 2013
Segment Reporting Information [Line Items]
Net sales	$ 203,527		$ 210,894	[1]
Operating costs and expenses:
Cost of goods sold	172,209		187,860	[1]
Operating expenses	9,319		9,081	[1]
Segment contribution margin	21,999		13,953
General and administrative expenses	2,663		2,202	[1]
Depreciation and amortization	3,477		3,541	[1],[2]
Operating income	15,859		8,210	[1]
Total assets	301,314				301,344	[3]
Capital spending (excluding business combinations)	965	[4]	3,715	[2],[5]
Pipelines and Transportation [Member]
Segment Reporting Information [Line Items]
Net sales	20,268		13,537
Operating costs and expenses:
Cost of goods sold	1,126		0
Operating expenses	6,999		7,414
Segment contribution margin	12,143		6,123
Total assets	236,560
Capital spending (excluding business combinations)	937	[4]	3,516	[5]
Wholesale Marketing and Terminalling [Member]
Segment Reporting Information [Line Items]
Net sales	183,259		197,357
Operating costs and expenses:
Cost of goods sold	171,083		187,860
Operating expenses	2,320		1,667
Segment contribution margin	9,856		7,830
Total assets	64,754
Capital spending (excluding business combinations)	$ 28	[4]	$ 199	[5]

[1] Adjusted to include the historical results of the El Dorado Terminal and Tank Assets and the Tyler Terminal and Tank Assets. See Notes 1 and 2 for further discussion.

[2] Adjusted to include the historical cash flows of the El Dorado Terminal and Tank Assets and the Tyler Terminal and Tank Assets. See Notes 1 and 2 for further discussion.

[3] Includes the historical balances of the El DoradoTerminal and Tank Assets and the Tyler Terminal and Tank Assets. See Notes 1 and 2 for further discussion.

[4] Capital spending includes expenditures incurred in connection with the assets acquired in the El Dorado Acquisition.

[5] Capital spending includes expenditures incurred in connection with the assets acquired in the El Dorado Acquisition and the Tyler Acquisition.