Properties and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Properties and equipment, gross	$ 2,035,723		$ 2,023,232
Less accumulated depreciation	474,669		453,761
Properties and equipment, net	1,561,054		1,569,471
Interest costs, capitalized during period	(97)	$ (196)
Depreciation expense	20,900	$ 16,900
Pipelines, terminals and tankage
Property, Plant and Equipment [Line Items]
Properties and equipment, gross	1,541,596		1,541,722
Refinery Assets
Property, Plant and Equipment [Line Items]
Properties and equipment, gross	347,338		347,338
Land and right of way
Property, Plant and Equipment [Line Items]
Properties and equipment, gross	86,445		86,484
Construction in progress
Property, Plant and Equipment [Line Items]
Properties and equipment, gross	24,134		12,029
Other
Property, Plant and Equipment [Line Items]
Properties and equipment, gross	$ 36,210		$ 35,659