Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 459,694	$ 445,723
Less: Accumulated depreciation	(63,496)	(50,212)
Property, plant and equipment, net	396,198	395,511
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	78,455	78,455
Buildings and Site Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	93,186	84,976
Tanks and Trim [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	130,445	124,438
Pipelines [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	20,507	20,507
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	123,263	121,278
Office Furniture and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,291	1,152
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 12,547	$ 14,917