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Major Customer (Notes)
 12 Months Ended
Dec. 31, 2016
Major Customer [Abstract]  
Major Customer [Text Block]
Major Customers

Sunoco LP accounted for 10.5%, 16.2% and 23.3% of our total revenues for the years ended December 31, 2016, 2015 and 2014, respectively. Delek, directly or indirectly, accounted for 32.8%, 25.9% and 13.6% of our total revenues for the years ended December 31, 2016, 2015 and 2014, respectively.