Segment Information (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015 USD ($) mi bbl	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2015 USD ($) mi operating_segments bbl	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Segment Reporting Information [Line Items]
Total revenues	$ 575,897	$ 680,670	$ 735,904	$ 607,396	$ 751,222	$ 915,719	$ 970,337	$ 864,610	$ 2,599,867	$ 3,501,888	$ 3,407,128
Operating Income (Loss)	21,756	$ 26,365	$ 21,031	$ 17,561	22,374	$ 15,855	$ 16,423	$ 15,643	86,713	70,295	(42,460)
Other income, net									(23,041)	(2,240)	(172)
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest									63,672	68,055	(42,632)
Depreciation and amortization									26,912	20,187	16,515
Payments to Acquire Productive Assets									62,995	79,172	84,825
Assets	$ 500,951				489,782				$ 500,951	489,782	357,487
Number of Reportable Segments | operating_segments									2
Pipeline, Miles | mi	685								685
Active Storage Capacity | bbl	8,200,000								8,200,000
Wholesale Segment [Member]
Segment Reporting Information [Line Items]
Revenues: Affiliate									$ 624,787	873,589	853,447
Revenues: Third-party									1,810,773	2,487,595	2,522,852
Total revenues									2,435,560	3,361,184	3,376,299
Operating Income (Loss)									38,159	28,234	20,790
Depreciation and amortization									4,486	3,893	2,928
Payments to Acquire Productive Assets									6,421	7,868	11,413
Assets	$ 147,597				160,158				147,597	160,158	61,504
Logistics Segment [Member]
Segment Reporting Information [Line Items]
Revenues: Affiliate									161,536	137,986	29,086
Revenues: Third-party									2,771	2,718	1,743
Total revenues									164,307	140,704	30,829
Operating Income (Loss)									60,898	52,809	(58,332)
Depreciation and amortization									22,426	16,294	13,587
Payments to Acquire Productive Assets									56,574	71,304	73,412
Assets	304,576				273,136				304,576	273,136	295,983
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)									(12,344)	(10,748)	(4,918)
Assets	$ 48,778				$ 56,488				$ 48,778	$ 56,488	$ 0
Crude Oil Storage Tanks [Member] | Logistics Segment [Member]
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Operated, Number of Significant Assets | mi	31								31
Active Storage Capacity | bbl	828,000								828,000
Truck Loading and Unloading Locations [Member] | Logistics Segment [Member]
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Operated, Number of Significant Assets | mi	8								8
Pump Station [Member] | Logistics Segment [Member]
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Operated, Number of Significant Assets | mi	15								15
Storage Tanks [Member] | Logistics Segment [Member]
Segment Reporting Information [Line Items]
Active Storage Capacity | bbl	7,400,000								7,400,000