Earnings Per Share (Schedule of Calculation of Numerator and Denominator in Earnings Per Share) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share [Abstract]
(Loss) income from continuing operations	$ (424,000)	$ 1,056,000	$ 6,650,000	$ (2,243,000)
Preferred stock dividends	(3,602,000)	(3,877,000)	(10,811,000)	(11,015,000)
Preferred stock redemption costs		(173,000)	(1,166,000)	(555,000)
Net loss attributable to noncontrolling interests	63,000	127,000	170,000	424,000
Net earnings allocated to unvested shares	(196,000)	(178,000)	(567,000)	(626,000)
(Loss) income from continuing operations attribtuable to common shareholders	(4,159,000)	(3,045,000)	(5,724,000)	(14,015,000)
Results from discontinued operations, net of noncontrolling interests	484,000	(1,432,000)	1,743,000	986,000
Net (loss) attributable to common shareholders, basic and diluted	$ (3,675,000)	$ (4,477,000)	$ (3,981,000)	$ (13,029,000)
Weighted average number of vested common shares outstanding	68,365,000	68,232,000	68,350,000	67,932,000
(Loss) earnings per common share, basic and fully diluted
Continuing operations	$ (0.06)	$ (0.05)	$ (0.09)	$ (0.20)
Discontinued operations	$ 0.01	$ (0.02)	$ 0.03	$ 0.01
(Loss) earnings per common share, basic and fully diluted	$ (0.05)	$ (0.07)	$ (0.06)	$ (0.19)