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				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Net income allocated to limited partners	$ 24,053		$ 10,999		$ 47,069		$ 21,788
Diluted income from continuing operations amount	18,264		10,044		43,781		20,251
Weighted average number of common units outstanding	170,107,060		142,937,163		164,398,548		140,135,219
Diluted weighted number of units outstanding	175,049,407		147,814,986		169,383,939		144,979,065
Net income, per common unit	0.14		0.08		0.29		0.16
Diluted net income, per common unit	0.10		0.07		0.26		0.14
Common Unit Options [Member]
Income allocated to dilutive securities	0		0		0		0
Dilutive securities (units)	8,474		25,826		15,033		28,403
Phantom Units [Member]
Income allocated to dilutive securities	0	[1]	0	[1]	0	[1]	0	[1]
Dilutive securities (units)	288,644	[1]	237,747	[1]	325,129	[1]	231,251	[1]
Series A Preferred Units [Member]
Income allocated to dilutive securities	$ (5,789)		$ (955)		$ (3,288)		$ (1,537)
Dilutive securities (units)	4,645,229		4,614,250		4,645,229		4,584,192

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