Risk Concentration (Notes)

6 Months Ended

Jun. 30, 2017

Risks and Uncertainties [Abstract]

Concentration Risk Disclosure [Text Block]

13. Risk Concentration

We are part of the consolidated operations of Andeavor and we derive a significant portion of our revenue from transactions with Western, a wholly-owned subsidiary of Andeavor. Western and Andeavor accounted for 33.1%, 32.3%, 31.2% and 31.5%, respectively, of our consolidated revenues for the three and six months ended June 30, 2017 and 2016.

We sell a variety of refined products to a diverse customer base. Sales to Kroger Company accounted for 21.4%, 21.5%, 20.5% and 20.8% of total revenues for the three and six months ended June 30, 2017 and 2016, respectively. Sales to Western’s retail and unmanned fleet fueling sites and Andeavor accounted for 23.0%, 22.7%, 23.2% and 23.4% of total revenues for the three and six months ended June 30, 2017 and 2016, respectively.

See Note 17, Related Party Transactions, for detailed information on our agreements with Western.