Revenues (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]
Total revenue		$ 166,280	$ 126,769	$ 334,201	$ 256,242
Amortization of other deferred charges				2,404	0
Service Revenue - Third Party
Disaggregation of Revenue [Line Items]
Total revenue		4,207		8,767
Service Revenue - Affiliate
Disaggregation of Revenue [Line Items]
Total revenue	[1]	37,741		67,204
Product Revenue - Third Party
Disaggregation of Revenue [Line Items]
Total revenue		108,993		210,710
Product Revenue - Affiliate
Disaggregation of Revenue [Line Items]
Total revenue		794		21,028
Lease Revenue - Affiliate
Disaggregation of Revenue [Line Items]
Total revenue		14,545		26,492
Pipelines and transportation
Disaggregation of Revenue [Line Items]
Total revenue		37,744	30,223	71,457	58,900
Pipelines and transportation | Service Revenue - Third Party
Disaggregation of Revenue [Line Items]
Total revenue		3,714		7,965
Pipelines and transportation | Service Revenue - Affiliate
Disaggregation of Revenue [Line Items]
Total revenue	[1]	23,160		43,057
Pipelines and transportation | Product Revenue - Third Party
Disaggregation of Revenue [Line Items]
Total revenue		0		0
Pipelines and transportation | Product Revenue - Affiliate
Disaggregation of Revenue [Line Items]
Total revenue		0		0
Pipelines and transportation | Lease Revenue - Affiliate
Disaggregation of Revenue [Line Items]
Total revenue		10,870		20,435
Wholesale marketing and terminalling
Disaggregation of Revenue [Line Items]
Total revenue		128,536	$ 96,546	262,744	$ 197,342
Wholesale marketing and terminalling | Service Revenue - Third Party
Disaggregation of Revenue [Line Items]
Total revenue		493		802
Wholesale marketing and terminalling | Service Revenue - Affiliate
Disaggregation of Revenue [Line Items]
Total revenue	[1]	14,581		24,147
Wholesale marketing and terminalling | Product Revenue - Third Party
Disaggregation of Revenue [Line Items]
Total revenue		108,993		210,710
Wholesale marketing and terminalling | Product Revenue - Affiliate
Disaggregation of Revenue [Line Items]
Total revenue		794		21,028
Wholesale marketing and terminalling | Lease Revenue - Affiliate
Disaggregation of Revenue [Line Items]
Total revenue		$ 3,675		$ 6,057

[1] Net of $1.8 million and $2.4 million of amortization expense for the three and six months ended, respectively, related to a customer contract intangible asset recorded in the wholesale marketing and terminalling segment.