Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share [Line Items]
(Loss) income from continuing operations		$ (17,050)	$ (1,766)	$ (5,210)	$ (1,657)
Preferred stock dividends		(3,050)	(3,050)	(6,100)	(6,100)
(Loss) income from continuing operations attributable to noncontrolling interests		(4,000)	22	(6,166)	13
Loss from continuing operations attributable to common stockholders		(16,100)	(4,838)	(5,144)	(7,770)
(Loss) income from discontinued operations		0	1,374	(1,157)	2,313
Income (loss) from discontinued operations attributable to noncontrolling interests		0	(10)	9	(16)
(Loss) income from discontinued operations attributable to common stockholders		0	1,384	(1,166)	2,329
Basic and diluted earnings per share:
Loss from continuing operations attributable to common stockholders		(16,100)	(4,838)	(5,144)	(7,770)
(Loss) income from discontinued operations attributable to common stockholders		0	1,384	(1,166)	2,329
Net loss attributable to common stockholders		(16,100)	(3,454)	(6,310)	(5,441)
Effect of Dilutive Securities
Interest expense on exchangeable debt		1,356		2,712
Diluted:		$ (14,744)	$ (3,454)	$ (3,598)	$ (5,441)
Basic and diluted earnings per share:
Loss from continuing operations attributable to common stockholders		64,741	64,681	64,737	64,588
(Loss) income from discontinued operations attributable to common stockholders		64,741	64,681	64,737	64,588
Net loss attributable to common stockholders		64,741	64,681	64,737	64,588
Effect of Dilutive Securities
Incremental shares from assumed conversion	[1]	18,051	434	18,051	434
Diluted:		82,792	65,115	82,788	65,022
Basic and diluted earnings per share:
Loss from continuing operations attributable to common stockholders		$ (0.25)	$ (0.07)	$ (0.08)	$ (0.12)
Income (loss) from discontinued operations attributable to common stockholders		0	0.02	(0.02)	0.04
Net loss attributable to common stockholders		$ (0.25)	$ (0.05)	$ (0.10)	$ (0.08)

[1] The effect of the inclusion of all potentially dilutive securities for 2015 would be anti-dilutive when computing diluted earnings per share. Therefore, the computation of both basic and diluted earnings per share is the same. For the period ended June 30, 2015, shares issuable upon settlement of the exchange feature of the Exchangeable Senior Notes were anti-dilutive and were not included in the computation of diluted earnings per share based on the “if-converted” method.