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Inventory Narrative (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Inventory [Abstract]    
Inventory $ 10,316us-gaap_InventoryNet $ 17,512us-gaap_InventoryNet [1]
[1] Includes the historical balances of the El Dorado Terminal and Tank Assets. See Notes 1 and 3 for further discussion.