Acquisitions Pro Forma Infromation (Details) (USD $)	3 Months Ended
Mar. 31, 2012	Mar. 31, 2013 Nettleton Pipeline [Member]	Mar. 31, 2013 Big Sandy Terminal [Member]
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue	$ 239,213,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual		1,800,000	400,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual		1,400,000	300,000
Business Acquisition, Pro Forma Net Income (Loss)	$ 2,638,000

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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