Revenue Recognition - Revenue Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	$ 411,699	$ 438,326	$ 1,195,637	$ 1,245,020
Total revenues	450,307	467,891	1,379,908	1,307,564
Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	396,001	424,061	1,147,139	1,203,511
Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	15,698	14,265	48,498	41,509
Revenues from contracts with customers
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	411,699	438,326	1,195,637	1,245,020
Other
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	38,608	29,565	184,271	62,544
Marketing
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	396,001	424,061	1,147,139	1,203,511
Total revenues	434,609	453,626	1,331,410	1,266,055
Marketing | Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	396,001	424,061	1,147,139	1,203,511
Marketing | Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	0	0	0	0
Marketing | Revenues from contracts with customers
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	396,001	424,061	1,147,139	1,203,511
Marketing | Other
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	38,608	29,565	184,271	62,544
Transportation
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	15,698	14,265	48,498	41,509
Total revenues	15,698	14,265	48,498	41,509
Transportation | Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	0	0	0	0
Transportation | Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	15,698	14,265	48,498	41,509
Transportation | Revenues from contracts with customers
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	15,698	14,265	48,498	41,509
Transportation | Other
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	$ 0	$ 0	$ 0	$ 0