Earnings Per Share (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
BASIC AND DILUTED
Loss from continuing operations attributable to common shareholders	$ (3,925)	$ (34,490)	$ (5,207)	$ (34,592)
Income (loss) from discontinued operations attributable to common shareholders	533	(16,049)	(372)	(39,585)
Net loss attributable to common shareholders	(3,392)	(50,539)	(5,579)	(74,177)
Weighted-average number of common shares outstanding	154,558,380	151,526,956	154,353,707	148,866,015
Loss from continuing operations (dollars per share)	$ (0.02)	$ (0.23)	$ (0.04)	$ (0.23)
Income (loss) from discontinued operations (dollars per share)	$ 0.00	$ (0.10)	$ 0.00	$ (0.27)
Net loss attributable to common shareholders (dollars per share)	$ (0.02)	$ (0.33)	$ (0.04)	$ (0.50)
Payments for Repurchase of Preferred Stock and Preference Stock			70,000	657
Series B
BASIC AND DILUTED
Payments for Repurchase of Preferred Stock and Preference Stock			69,459
Deemed Dividend	2,346	0	2,346	0
Series C Preferred Stock [Member] | Convertible Preferred Stock [Member]
BASIC AND DILUTED
Repurchased and Retired During Period, Shares			34,800	15,296
Series C Cumulative Convertible Preferred Shares Repurchased and Retired	$ 229	$ 86	$ 229	$ 86