Consolidated Statements of Operations Statement - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues [Abstract]
Total revenues	$ 2,599,867	$ 3,501,888	$ 3,407,128
Cost of Goods Sold [Abstract]
Cost of products sold, affiliate	573,264	871,751	853,447
Cost of products sold, third-party	1,734,873	2,373,168	2,426,270
Operating Costs and Expenses [Abstract]
Operating and maintenance expenses	154,267	143,702	135,684
Selling, general and administrative expenses	24,116	22,628	17,672
Loss (gain) and impairments on disposal of assets, net	(278)	157	0
Depreciation and amortization	26,912	20,187	16,515
Total operating costs and expenses	2,513,154	3,431,593	3,449,588
Operating income (loss)	86,713	70,295	(42,460)
Other income (expense):
Interest income	0	4	7
Interest expense and other financing costs	(23,107)	(2,374)	(322)
Other income, net	66	130	143
Net income (loss) before income taxes	63,672	68,055	(42,632)
Provision for income taxes	(47)	(459)	(95)
Net income (loss)	(63,625)	(67,596)	42,727
Less net income (loss) attributable to General Partner	1,052	14,604	(51,255)
Net income attributable to limited partners	$ 62,573	$ 52,992	$ 8,528
Earnings Per Share [Abstract]
Cash distributions declared per common unit	$ 1.4275	$ 1.1632	$ 0
Common Units [Member]
Earnings Per Share [Abstract]
Earnings Per Share, Basic	1.31	1.16	0.19
Earnings Per Share, Diluted	$ 1.30	$ 1.15	$ 0.19
Weighted Average Number of Shares Outstanding, Basic	24,084	23,059	22,811
Weighted Average Number of Shares Outstanding, Diluted	24,099	23,107	22,813
Subordinated Units [Member]
Earnings Per Share [Abstract]
Earnings Per Share, Basic and Diluted	$ 1.30	$ 1.15	$ 0.19
Weighted Average Number of Shares Outstanding, Basic and Diluted	22,811	22,811	22,811
Sales Based Revenues [Member]
Revenues [Abstract]
Revenues: Affiliate	$ 582,888	$ 835,203	$ 843,156
Revenues: Third-party	1,810,773	2,487,595	2,522,852
Fee Based Revenues [Member]
Revenues [Abstract]
Revenues: Affiliate	203,435	176,372	39,377
Revenues: Third-party	$ 2,771	$ 2,718	$ 1,743