Consolidated Statements of Changes in Equity (USD $) In Thousands, unless otherwise specified	Total	$0.975 per Series A preferred share	$1.00 per Series C depositary preferred share	Preferred Stock	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income	Accumulated Deficit	Accumulated Deficit $0.975 per Series A preferred share	Accumulated Deficit $1.00 per Series C depositary preferred share	Noncontrolling Interests in Other Parnerhsips	Comprehensive Loss
Stockholders' Equity, beginning balance at Dec. 31, 2011	$ 586,895			$ 478,774	$ 1,243	$ 2,353,251	$ 25,738	$ (2,297,468)			$ 25,357
Shares, Issued - beginning balance at Dec. 31, 2011				12,948	124,281
Increase (Decrease) in Stockholders' Equity
Amortization of stock awards	432					432
Forfeiture of stock awards - shares					(63)
Forfeiture of stock awards - value	(7)				(1)	193		(199)
Conversion of operating partnership units into common shares - shares					9
Conversion of operating partnership units into common shares - value	33					33
Allocation to redeemable noncontrolling interests	(512)					(512)
Contribution from noncontrolling interests	2,310										2,310
Distribution to noncontrolling interests	(620)										(620)
Other	(4)					0		(4)
Preferred dividends:
Preferred dividends		(12,558)	(6,798)						(12,558)	(6,798)
Comprehensive Loss:
Foreign exchange translation							(9)					(9)
Net loss								(16,594)			(54)	(16,648)
Comprehensive loss	(16,657)											(16,657)
Stockholders' Equity, ending balance at Jun. 30, 2012	552,514			478,774	1,242	2,353,397	25,729	(2,333,621)			26,993
Shares, Issued - ending balance at Jun. 30, 2012				12,948	124,227
Stockholders' Equity, beginning balance at Dec. 31, 2012	422,019			478,774	1,241	2,353,581	26,039	(2,464,968)			27,352
Shares, Issued - beginning balance at Dec. 31, 2012				12,948	124,117
Increase (Decrease) in Stockholders' Equity
Issuance of stock awards - shares					5
Amortization of stock awards	2,173
Stock awards - amortization and severance						2,173
Conversion of operating partnership units into common shares - value	0
Allocation to redeemable noncontrolling interests	(1,095)					(1,095)
Contribution from noncontrolling interests	1,840										1,840
Distribution to noncontrolling interests	(446)										(446)
Preferred dividends:
Preferred dividends		(12,558)	(6,798)						(12,558)	(6,798)
Comprehensive Loss:
Foreign exchange translation							(919)					(919)
Net loss								(44,868)			(4,212)	(49,080)
Comprehensive loss	(49,999)											(49,999)
Stockholders' Equity, ending balance at Jun. 30, 2013	$ 355,136			$ 478,774	$ 1,241	$ 2,354,659	$ 25,120	$ (2,529,192)			$ 24,534
Shares, Issued - ending balance at Jun. 30, 2013				12,948	124,122