Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenues:
Affiliate	$ 34,324	$ 1,007	$ 66,380	$ 1,919
Third-party	657	292	1,358	519
Total revenues	34,981	1,299	67,738	2,438
Operating costs and expenses:
Operating and maintenance expenses	17,954	18,505	34,089	34,072
General and administrative expenses	2,143	1,149	4,118	2,190
Depreciation and amortization	3,467	2,886	6,711	5,816
Total operating costs and expenses	23,564	22,540	44,918	42,078
Operating income (loss)	11,417	(21,241)	22,820	(39,640)
Other income (expense):
Interest expense and other financing costs	(227)	0	(452)	0
Amortization of loan fees	(130)	0	(259)	0
Other income, net	0	4	3	6
Income (loss) before income taxes	11,060	(21,237)	22,112	(39,634)
Provision for income taxes	(85)	0	(204)	0
Net income (loss)	$ 10,975	$ (21,237)	$ 21,908	$ (39,634)
Earnings Per Share [Abstract]
Distribution Made to Limited Partner, Distributions Declared, Per Unit	$ 0.2975		$ 0.5382
Common Units [Member]
Earnings Per Share [Abstract]
Earnings Per Share, Basic	$ 0.24		$ 0.48
Earnings Per Share, Diluted	$ 0.24		$ 0.48
Weighted Average Number of Shares Outstanding, Basic	22,811		22,811
Weighted Average Number of Shares Outstanding, Diluted	22,861		22,838
Subordinated Units [Member]
Earnings Per Share [Abstract]
Earnings Per Share, Basic and Diluted	$ 0.24		$ 0.48
Weighted Average Number of Shares Outstanding, Basic and Diluted	22,811		22,811