Condensed Consolidated Statements of Partners' Equity - 6 months ended Jun. 30, 2015 - USD ($) shares in Thousands, $ in Thousands	Total	Preferred Equity	Preferred Equity Limited Partner	Preferred Equity Series A Preferred Equity	Preferred Equity Series B Preferred Equity	Incentive Distribution Equity	Unitholders' Equity	Unitholders' Equity Limited Partner	Unitholders' Equity General Partner
Unitholders equity, beginning balance (in shares) at Dec. 31, 2014				2,300	7,200	100		68,911
Unitholders equity, beginning balance at Dec. 31, 2014	$ 637,205			$ 55,192	$ 174,261	$ 30,814		$ 376,885	$ 53
Increase (Decrease) in Partners' Capital [Roll Forward]
Units issued to Legacy Board of Directors for services (in shares)								66
Units issued to Legacy Board of Directors for services	604							$ 604
Unit-based compensation	2,554							$ 2,554
Vesting of restricted and phantom units (in shares)								73
Offering costs associated with the issuance of units	(71)							$ (71)
Units acquired in exchange for equity method investee interest (in shares)								(105)
Units acquired in exchange for equity method investee interest	(1,349)							$ (1,349)
Distributions to preferred unitholders & Distributions to common unitholders, $0.96 per unit		$ (9,500)	$ (9,500)				$ (66,605)	(66,605)
Net loss	(267,328)							$ (267,257)	(71)
Unitholders equity, ending balance (in shares) at Jun. 30, 2015				2,300	7,200	100		68,945
Unitholders equity, ending balance at Jun. 30, 2015	$ 295,510			$ 55,192	$ 174,261	$ 30,814		$ 35,261	$ (18)