Income (Loss) Per Limited Partner Unit (Basic And Diluted Income (Loss) From Continuing Operations) (Details) (USD $) In Thousands, except Share data	3 Months Ended				4 Months Ended	9 Months Ended
	Sep. 30, 2011		Sep. 30, 2010		Sep. 30, 2010	Sep. 30, 2011
Amount allocated to common units	$ 26,243		$ 4,314			$ 48,031
Diluted income from continuing operations amount	13,010		4,314			33,261
Diluted income from continuing operations units	150,763,885		128,627,560			146,945,470
Basic and diluted income from continuing operations per common unit	$ 0.18		$ 0.03			$ 0.34
Diluted income from continuing operations per common unit	$ 0.09		$ 0.03			$ 0.23
Successor [Member]
Amount allocated to common units	26,243		4,314		(2,165)	48,031
Basic income from continuing operations units	145,842,735		128,387,929		125,916,507	142,058,631
Common Unit Options [Member]
Amount allocated to common units	0		0			0
Limited partner interest units	13,633		34,671			23,450
Phantom Units [Member]
Amount allocated to common units	0	[1]	0	[1]		0	[1]
Limited partner interest units	281,320	[1]	204,960	[1]		237,192	[1]
Series A Preferred Units [Member]
Amount allocated to common units	$ 13,233		$ 0			$ 14,770
Limited partner interest units	4,626,197		0			4,626,197

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