Segment Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016 USD ($) mi bbl	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) operating_segments mi bbl	Jun. 30, 2015 USD ($)
Segment Reporting Information [Line Items]
Segment Reporting, Number of Business Segments | operating_segments			2
Pipeline, Miles | mi	685		685
Active Storage Capacity | bbl	8,400,000		8,400,000
Gain (Loss) on Sale of Assets and Asset Impairment Charges	$ 802	$ 160	$ 901	$ 244
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	7,400,000		7,400,000
Inventories [Member]
Segment Reporting Information [Line Items]
Assets Held-for-sale, Not Part of Disposal Group	$ 1,500		$ 1,500
Property, Plant and Equipment [Member]
Segment Reporting Information [Line Items]
Assets Held-for-sale, Not Part of Disposal Group	$ 4,100		$ 4,100