Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Disaggregation of Revenue [Line Items]
Revenues	$ 856,396	$ 564,245	$ 1,621,835	$ 1,169,498
Refining
Disaggregation of Revenue [Line Items]
Revenues	800,408		1,540,671
Refining | Gasoline
Disaggregation of Revenue [Line Items]
Revenues	255,870		495,131
Refining | Distillates
Disaggregation of Revenue [Line Items]
Revenues	453,968		852,497
Refining | Other Refined Products
Disaggregation of Revenue [Line Items]
Revenues	90,570		193,043
Refining | Merchandise
Disaggregation of Revenue [Line Items]
Revenues	0		0
Refining | Transportation and Terminalling Services
Disaggregation of Revenue [Line Items]
Revenues	0		0
Logistics
Disaggregation of Revenue [Line Items]
Revenues	31,289		64,356
Logistics | Gasoline
Disaggregation of Revenue [Line Items]
Revenues	0		0
Logistics | Distillates
Disaggregation of Revenue [Line Items]
Revenues	0		0
Logistics | Other Refined Products
Disaggregation of Revenue [Line Items]
Revenues	0		0
Logistics | Merchandise
Disaggregation of Revenue [Line Items]
Revenues	0		0
Logistics | Transportation and Terminalling Services
Disaggregation of Revenue [Line Items]
Revenues	31,289		64,356
Retail
Disaggregation of Revenue [Line Items]
Revenues	119,691		198,283
Retail | Gasoline
Disaggregation of Revenue [Line Items]
Revenues	84,754		142,956
Retail | Distillates
Disaggregation of Revenue [Line Items]
Revenues	11,125		18,121
Retail | Other Refined Products
Disaggregation of Revenue [Line Items]
Revenues	0		0
Retail | Merchandise
Disaggregation of Revenue [Line Items]
Revenues	23,812		37,206
Retail | Transportation and Terminalling Services
Disaggregation of Revenue [Line Items]
Revenues	$ 0		$ 0