Segment Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016 USD ($) mi bbl	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) operating_segments mi bbl	Sep. 30, 2015 USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments | operating_segments			2
Pipeline, Miles | mi	692		692
Active Storage Capacity | bbl	12,400,000		12,400,000
Gain (Loss) on Sale of Assets and Asset Impairment Charges | $	$ 62	$ 13	$ 963	$ 257
Wholesale Segment [Member]
Segment Reporting Information [Line Items]
Severance Costs | $	400
Gain (Loss) on Sale of Assets and Asset Impairment Charges | $	$ 600		$ 577
Pump Station [Member] | Logistics Segment [Member]
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Operated, Number of Significant Assets	15		15
Crude Oil Storage Tanks [Member] | Logistics Segment [Member]
Segment Reporting Information [Line Items]
Active Storage Capacity | bbl	959,000		959,000
Property, Plant and Equipment, Operated, Number of Significant Assets	33		33
Truck Loading and Unloading Locations [Member] | Logistics Segment [Member]
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Operated, Number of Significant Assets	8		8
Storage Tanks [Member] | Logistics Segment [Member]
Segment Reporting Information [Line Items]
Active Storage Capacity | bbl	11,400,000		11,400,000