Segment Data - PP&E (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Property, plant and equipment	$ 680,969	$ 680,969	$ 461,325
Less: accumulated depreciation	(207,225)	(207,225)	(166,281)
Property, plant and equipment, net	473,744	473,744	$ 295,044
Depreciation expense	8,621	14,920
Pipelines and transportation
Segment Reporting Information [Line Items]
Property, plant and equipment	566,780	566,780
Less: accumulated depreciation	(159,341)	(159,341)
Property, plant and equipment, net	407,439	407,439
Depreciation expense	6,947	11,553
Wholesale marketing and terminalling
Segment Reporting Information [Line Items]
Property, plant and equipment	114,189	114,189
Less: accumulated depreciation	(47,884)	(47,884)
Property, plant and equipment, net	66,305	66,305
Depreciation expense	$ 1,674	$ 3,367

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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The expense recognized in the current period that allocates the cost of nonproduction tangible assets over their useful lives.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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