Consolidated Statements of Changes in Equity (USD $) In Thousands, unless otherwise specified	Total	$1.95 per Series A preferred share	$2.00 per Series C depositary preferred share	Preferred Stock	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income	Accumulated Deficit	Accumulated Deficit $1.95 per Series A preferred share	Accumulated Deficit $2.00 per Series C depositary preferred share	Treasury Stock	Noncontrolling Interests in Other Parnerhsips	Comprehensive Loss
Stockholders' Equity, beginning balance at Dec. 31, 2008	$ 818,889			$ 478,774	$ 694	$ 2,045,482	$ 15,347	$ (1,645,947)			$ (99,245)	$ 23,784
Shares, Issued - beginning balance at Dec. 31, 2008				12,948	69,413
Increase (Decrease) in Stockholders' Equity
Issuance of stock awards - value	16					(27,510)					27,526
Amortization of stock awards	5,139					5,139
Forfeiture of stock awards - value	(130)					63					(193)
Conversion of operating partnership units into common shares - values						(17)					17
Allocation to redeemable non-controlling interests	(1,152)					(1,152)
Contribution from noncontrolling interests	534											534
Distribution to noncontrolling interests	(1,606)											(1,606)
Other	(40)					(168)		(40)				168
Preferred dividends:
Preferred dividends		(25,117)	(13,596)						(25,117)	(13,596)
Comprehensive Loss:
Foreign exchange translation							8,181						8,181
Net loss								(108,122)				(297)	(108,419)
Comprehensive loss	(100,238)												(100,238)
Stockholders' Equity, ending balance at Dec. 31, 2009	682,699			478,774	694	2,021,837	23,528	(1,792,822)			(71,895)	22,583
Shares, Issued - ending balance at Dec. 31, 2009				12,948	69,413
Increase (Decrease) in Stockholders' Equity
Issuance of common stock - shares					31,625
Issuance of common stock - value	166,327				316	166,011
Issuance of stock awards - value	68					(229)					297
Amortization of stock awards	5,400					5,400
Forfeiture of stock awards - value	(1,523)					405					(1,928)
Conversion of operating partnership units into common shares - values						(185)					185
Allocation to redeemable non-controlling interests	(1,815)					(1,815)
Contribution from noncontrolling interests	1,394											1,394
Distribution to noncontrolling interests	(2,383)											(2,383)
Other	(1,049)					(1,116)		(49)				116
Preferred dividends:
Preferred dividends		(25,117)	(13,596)						(25,117)	(13,596)
Comprehensive Loss:
Foreign exchange translation							2,929						2,929
Net loss								(223,041)				(1,915)	(224,956)
Comprehensive loss	(222,027)												(222,027)
Stockholders' Equity, ending balance at Dec. 31, 2010	588,378			478,774	1,010	2,190,308	26,457	(2,054,625)			(73,341)	19,795
Shares, Issued - ending balance at Dec. 31, 2010				12,948	101,038
Increase (Decrease) in Stockholders' Equity
Issuance of common stock - shares					27,600
Issuance of common stock - value	158,476				276	158,200
Retirement of treasury stock - shares					(4,156)
Retirement of treasury stock - value					(41)			(73,300)			73,341
Issuance of stock awards - shares					95
Issuance of stock awards - value	555				1	554
Amortization of stock awards	3,475					3,475
Forfeiture of stock awards - shares					(312)
Forfeiture of stock awards - value	(961)				(3)			(958)
Conversion of operating partnership units into common shares - shares					16
Conversion of operating partnership units into common shares - values	97					97
Allocation to redeemable non-controlling interests	685					685
Contribution from noncontrolling interests	6,967											6,967
Distribution to noncontrolling interests	(1,053)											(1,053)
Other	(86)					(68)		(18)
Preferred dividends:
Preferred dividends		(25,117)	(13,596)						(25,117)	(13,596)
Comprehensive Loss:
Foreign exchange translation							(719)						(719)
Net loss								(129,854)				(352)	(130,206)
Comprehensive loss	(130,925)												(130,925)
Stockholders' Equity, ending balance at Dec. 31, 2011	$ 586,895			$ 478,774	$ 1,243	$ 2,353,251	$ 25,738	$ (2,297,468)			$ 0	$ 25,357
Shares, Issued - ending balance at Dec. 31, 2011				12,948	124,281