Earnings Per Share (Components Of Earnings Per Common Share - Basic And Diluted) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Continuing Operations [Abstract]
Income (loss) from continuing operations	$ 24,250	$ (24,664)	$ 37,100	$ (19,807)
Gain on Sale of Property	335	392	859	1,588
Net (income) loss attributable to noncontrolling interests	(1,774)	2,738	(4,557)	410
Preferred share dividends	(8,869)	(8,869)	(26,607)	(26,607)
Income (loss) from continuing operations attributable to common shareholders – basic and diluted	13,942	(30,403)	6,795	(44,416)
Income (loss) from discontinued operations attributable to common shareholders - basic and diluted	$ 17,462	$ (11,686)	$ 59,487	$ 2,388
Denominator [Abstract]
Weighted average shares outstanding - basic	120,766	120,413	120,637	120,301
Share options and awards	1,078	0	1,016	0
Weighted average shares outstanding - diluted	121,844	120,413	121,653	120,301