Property, Plant, and Equipment (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Depreciation, Depletion and Amortization	$ 4,057,000	$ 2,872,000	$ 9,873,000	$ 8,705,000
Proceeds from Sale of Property, Plant, and Equipment				200,000
Property, Plant and Equipment, Gross	228,769,000		228,769,000		179,353,000
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(76,501,000)		(76,501,000)		(66,628,000)
Property, Plant and Equipment, Net, Excluding Construction in Progress	152,268,000		152,268,000		112,725,000
Construction in Progress, Gross	27,462,000		27,462,000		21,871,000
Property, Plant and Equipment, Net	179,730,000		179,730,000		134,596,000
Gain (Loss) on Disposition of Property Plant Equipment				300,000
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	6,619,000		6,619,000		6,023,000
Pipelines [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	106,931,000		106,931,000		60,731,000
Terminals and Related Assets [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	92,505,000		92,505,000		90,425,000
Asphalt Terminals [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 22,714,000		$ 22,714,000		$ 22,174,000