Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenues:
Fee based revenue, affiliate	$ 45,478	$ 39,571
Fee based revenue, third-party	623	701
Sales based revenue, affiliate	132,771	197,013
Sales based revenue, third-party	428,524	627,325
Total revenues	607,396	864,610
Cost of products sold:
Affiliate	130,508	197,013
Third-party	411,193	607,804
Operating and maintenance expenses	35,637	33,683
General and administrative expenses	5,931	5,197
Gain on disposal of assets, net	(84)	0
Depreciation and amortization	4,738	4,152
Total operating costs and expenses	587,923	847,849
Operating income	19,473	16,761
Other income (expense):
Interest expense and other financing costs	3,964	361
Other income, net	17	43
Net income before income taxes	15,526	16,443
Provision for income taxes	(203)	(119)
Net income	15,323	16,324
Net income attributable to General Partner	0	5,391	[1]
Net income attributable to limited partners	$ 15,323	$ 10,933
Earnings Per Share [Abstract]
Distribution Made to Limited Partner, Distributions Declared, Per Unit	$ 0.3325	$ 0.2407
Common Units [Member]
Earnings Per Share [Abstract]
Earnings Per Share, Basic	$ 0.33	$ 0.24
Earnings Per Share, Diluted	$ 0.33	$ 0.24
Weighted Average Number of Shares Outstanding, Basic	23,985	22,811
Weighted Average Number of Shares Outstanding, Diluted	23,996	22,815
Subordinated Units [Member]
Earnings Per Share [Abstract]
Earnings Per Share, Basic and Diluted	$ 0.33	$ 0.24
Weighted Average Number of Shares Outstanding, Basic and Diluted	22,811	22,811

[1] For historical periods prior to the Wholesale Acquisition, we have applied the two-class method to calculate earnings per unit. The net income of WRW prior to the Wholesale Acquisition was allocated entirely to the general partner.