Income (Loss) Per Limited Partner Unit (Schedule of Antidilutive Securities Excluded from Computations of Earnings Per Share) (Details)	12 Months Ended	5 Months Ended	12 Months Ended	5 Months Ended		12 Months Ended		5 Months Ended	12 Months Ended	5 Months Ended	12 Months Ended	7 Months Ended	12 Months Ended	7 Months Ended		12 Months Ended		7 Months Ended	12 Months Ended	7 Months Ended	12 Months Ended
	Dec. 31, 2011	May 25, 2010 Predecessor [Member] Common Unit Options [Member]	Dec. 31, 2009 Predecessor [Member] Common Unit Options [Member]	May 25, 2010 Predecessor [Member] Phantom Units [Member]		Dec. 31, 2009 Predecessor [Member] Phantom Units [Member]		May 25, 2010 Predecessor [Member] Restricted Non-Vested Common Units [Member]	Dec. 31, 2009 Predecessor [Member] Restricted Non-Vested Common Units [Member]	May 25, 2010 Predecessor [Member] Series A Preferred Units [Member]	Dec. 31, 2009 Predecessor [Member] Series A Preferred Units [Member]	Dec. 31, 2010 Successor [Member] Common Unit Options [Member]	Dec. 31, 2011 Successor [Member] Common Unit Options [Member]	Dec. 31, 2010 Successor [Member] Phantom Units [Member]		Dec. 31, 2011 Successor [Member] Phantom Units [Member]		Dec. 31, 2010 Successor [Member] Restricted Non-Vested Common Units [Member]	Dec. 31, 2011 Successor [Member] Restricted Non-Vested Common Units [Member]	Dec. 31, 2010 Successor [Member] Series A Preferred Units [Member]	Dec. 31, 2011 Successor [Member] Series A Preferred Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share		298,400	357,489	369,346	[1]	0	[1]	396,918	566,493	4,584,192	1,449,211	259,650	0	366,489	[1]	0	[1]	0	0	4,584,192	0
General partner percentage allocation of income until made whole for net losses allocatted to it in prior years	100.00%

[1] Amount assumes maximum conversion rate for market condition awards.