Consolidated Statement Of Changes In Predecessor's Partners' Capital (USD $) In Thousands	Predecessor [Member] General Partner [Member]	Predecessor [Member] Limited Partner [Member]	Predecessor [Member] Predecessor Partners' Capital [Member]	Predecessor [Member] Non-controlling Interest [Member]	Predecessor [Member]	General Partner [Member]	Total
Balances at Dec. 31, 2009	$ (15)	$ (1,406)	$ (1,421)	$ 14,733	$ 13,312
Contributions by partners	141	13,921	14,062	460,802	474,864
Distribution to partners	(9)	(891)	(900)	(29,100)	(30,000)
Amortization of equity awards	16	1,601	1,617		1,617
Net income	18	1,794	1,812	30,101	31,913
Balances at Dec. 21, 2010	151	15,019	15,170	476,536	491,706		304,540
Contributions by partners						715	715
Distribution to partners						2
Net income						(7)	(12,037)
Balances at Dec. 31, 2010						708	326,694
Distribution to partners						15
Balances at Mar. 31, 2011
Balances at Dec. 31, 2010						708	326,694
Distribution to partners							25,507
Net income						1,575	88,295
Balances at Dec. 31, 2011						546	362,698
Balances at Sep. 30, 2011
Distribution to partners						16
Balances at Dec. 31, 2011						546
Distribution to partners						20
Balances at Mar. 31, 2012
Balances at Dec. 31, 2011						546	362,698
Distribution to partners							37,270
Net income						6,132	79,751
Balances at Dec. 31, 2012						710	714,564
Balances at Sep. 30, 2012
Distribution to partners						25
Balances at Dec. 31, 2012						$ 710