Consolidated Statements of Operations (Parenthetical) (USD $) In Thousands, unless otherwise specified	7 Months Ended	12 Months Ended	5 Months Ended	12 Months Ended
	Dec. 31, 2010 Successor [Member]	Dec. 31, 2011 Successor [Member]	May 25, 2010 Predecessor [Member]	Dec. 31, 2009 Predecessor [Member]
Gas sales, related party amounts	$ 3,298	$ 22,715	$ 0	$ 0
NGL sales, related party amounts	136,960	364,906	0	0
Gathering, transportation and other fees, related party amounts	14,004	23,716	12,200	11,162
Other revenues, related party amounts	2,725	9,799	0	0
Cost of sales, related party amounts	12,998	21,957	6,564	10,913
General and administrative, related party amounts	5,833	16,597	0	0
Net income from operations of east Texas assets, gain on disposal	$ 55