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Revenues (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Total revenue		$ 164,110	$ 130,626	$ 498,311	$ 386,868
Amortization of other deferred charges				4,207	0
Service Revenue - Third Party
Disaggregation of Revenue [Line Items]
Total revenue		3,717		12,484
Service Revenue - Affiliate
Disaggregation of Revenue [Line Items]
Total revenue	[1]	39,457		106,661
Product Revenue - Third Party
Disaggregation of Revenue [Line Items]
Total revenue		96,558		307,268
Product Revenue - Affiliate
Disaggregation of Revenue [Line Items]
Total revenue		9,017		30,045
Lease Revenue - Affiliate
Disaggregation of Revenue [Line Items]
Total revenue		15,361		41,853
Pipelines and transportation
Disaggregation of Revenue [Line Items]
Total revenue		39,785	30,982	111,242	89,882
Pipelines and transportation | Service Revenue - Third Party
Disaggregation of Revenue [Line Items]
Total revenue		3,653		11,618
Pipelines and transportation | Service Revenue - Affiliate
Disaggregation of Revenue [Line Items]
Total revenue	[1]	24,536		67,593
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		11,596		32,031
Wholesale marketing and terminalling
Disaggregation of Revenue [Line Items]
Total revenue		124,325	$ 99,644	387,069	$ 296,986
Wholesale marketing and terminalling | Service Revenue - Third Party
Disaggregation of Revenue [Line Items]
Total revenue		64		866
Wholesale marketing and terminalling | Service Revenue - Affiliate
Disaggregation of Revenue [Line Items]
Total revenue	[1]	14,921		39,068
Wholesale marketing and terminalling | Product Revenue - Third Party
Disaggregation of Revenue [Line Items]
Total revenue		96,558		307,268
Wholesale marketing and terminalling | Product Revenue - Affiliate
Disaggregation of Revenue [Line Items]
Total revenue		9,017		30,045
Wholesale marketing and terminalling | Lease Revenue - Affiliate
Disaggregation of Revenue [Line Items]
Total revenue		$ 3,765		$ 9,822
[1] Net of $1.8 million and $4.2 million of amortization expense for the three and nine months ended, respectively, related to a customer contract intangible asset recorded in the wholesale marketing and terminalling segment.

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