Property, Plant and Equipment, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 600,971		$ 600,971		$ 588,113
Accumulated depreciation	(201,077)		(201,077)		(182,743)
Property, plant and equipment, net, excluding construction in progress	399,894		399,894		405,370
Property, plant and equipment, net	409,370		409,370		412,170
Depreciation	9,500	$ 9,300	18,900	$ 18,300
Interest Expense, Construction in Progress, Contra	70	$ 300	90	$ 300
Land and Building [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	28,061		28,061		26,463
Pipelines and related assets
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	270,853		270,853		264,398
Terminals and related assets
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	250,857		250,857		245,512
Asphalt plant, terminals and related assets
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	26,969		26,969		26,861
Wholesale and related assets
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	24,231		24,231		24,879
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 9,476		$ 9,476		6,800
Lubricant Business [Member] | Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Property, Plant and Equipment [Member]
Property, Plant and Equipment [Line Items]
Assets Held-for-sale, Not Part of Disposal Group					$ 7,300