Income (Loss) Per Limited Partner Unit (Basic And Diluted Income (Loss) From Continuing Operations) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Net income allocated to limited partners	$ (5,977)		$ 26,243		$ 41,092		$ 48,031
Diluted income from continuing operations amount	(5,977)		13,010		38,379		33,261
Weighted average number of common units outstanding	170,264,621		145,842,735		166,368,178		142,058,631
Diluted weighted number of units outstanding	170,264,621		150,763,885		171,353,627		146,945,470
Basic (loss) income per common unit	(0.04)		0.18		0.25		0.34
Diluted (loss) income, per common unit	(0.04)		0.09		0.22		0.23
Common Unit Options [Member]
Income allocated to dilutive securities	0		0		0		0
Dilutive securities (units)	0		13,633		13,113		23,450
Phantom Units [Member]
Income allocated to dilutive securities	0	[1]	0	[1]	0	[1]	0	[1]
Dilutive securities (units)	0	[1]	281,320	[1]	320,452	[1]	237,192	[1]
Series A Preferred Units [Member]
Income allocated to dilutive securities	$ 0		$ (13,233)		$ (2,713)		$ (14,770)
Dilutive securities (units)	0		4,626,197		4,651,884		4,626,197

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