CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (Unaudited) (USD $) In Thousands	Preferred Stock [Member]	Common Stock [Member]	Common Stock Held in Trust	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Deficit [Member]	Noncontrolling Interest - Real Estate Partnerships [Member]	Total
Balance at Dec. 31, 2010	$ 102,787	$ 22	$ (1,896)	$ 516,167	$ (3,003)	$ (127,575)	$ 133,988	$ 620,490
Comprehensive loss
Net loss	0	0	0	0	0	(69,852)	(84,112)	(153,964)
Change in fair value of interest rate swaps	0	0	0	0	(2,701)	0	(7,398)	(10,099)
Total comprehensive loss	0	0	0	0	0	0	0	(164,063)
Common dividends declared - $0.225 per share	0	0	0	0	0	(4,964)	0	(4,964)
Preferred dividends declared - $1.50 per share	0	0	0	0	0	(7,341)	0	(7,341)
Share-based compensation	0	0	0	1,389	0	0	0	1,389
Issuance of 1,046,400 shares of 8.0% Series D Preferred stock	26,155	0	0	0	0	0	0	26,155
17,636 shares issued in lieu of Directors' fees	0	0	0	319	0	0	0	319
Issuance costs for shelf registration	0	0	0	(12)	0	0	0	(12)
18,819 and 11 shares withheld to satisfy tax withholding obligation in connection with the vesting of restricted stock and deferred incentive share units, respectively	0	0	0	(336)	0	0	0	(336)
Distribution of 48,125 shares of common stock from deferred compensation plan	0	0	1,625	0	0	0	0	1,625
Contribution of 2,061 shares of common stock to deferred compensation plan	0	0	(38)	0	0	0	0	(38)
Contribution of capital by noncontrolling interest	0	0	0	0	0	0	251,168	251,168
Distribution of capital to noncontrolling interest	0	0	0	0	0	0	(43,520)	(43,520)
Balance at Sep. 30, 2011	$ 128,942	$ 22	$ (309)	$ 517,527	$ (5,704)	$ (209,732)	$ 250,126	$ 680,872