Quarterly report pursuant to Section 13 or 15(d)

Inventories (Details)

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Inventories (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Inventory Disclosure [Abstract]    
Crude oil, refined products, asphalt and blendstocks $ 69,088 $ 57,021
Crude oil consignment inventory (Note 7) 10,589 11,708
Materials and supplies 29,150 27,826
Store merchandise 27,032 26,752
Store fuel 5,569 7,195
Total inventories $ 141,428 $ 130,502