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Inventory (Details) - USD ($)
$ in Thousands
Sep. 30, 2015
Dec. 31, 2014
Inventory Disclosure [Abstract]    
Refined products $ 27,864 $ 67,055
Liquefied petroleum gases 42,984 37,642
Transmix 28,608 36,867
Crude oil 29,626 10,015
Additives 6,099 6,183
Total inventory $ 135,181 $ 157,762