Net (Loss) Income Available to Common Stockholders Per Share of the Company (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012	Dec. 31, 2012
Numerator:
Income from continuing operations	$ 2,388		$ 2,165
Loss from continuing operations attributable to noncontrolling common units of the Operating Partnership	22		186
Preferred distributions and dividends	(3,313)		(9,336)
Allocation to participating securities (nonvested shares and time-based RSUs)	(418)		(380)
Numerator for basic and diluted loss from continuing operations available to common stockholders	(1,321)		(7,365)
Income from discontinued operations	0		76,506
Income from discontinued operations attributable to noncontrolling common units of the Operating Partnership	0		(1,981)
Numerator for basic and diluted net (loss) income available to common stockholders	$ (1,321)		$ 67,160
Denominator:
Weighted average common shares outstanding-basic (Note 12)	74,977,240		63,648,704
Effect of dilutive securities - contingently issuable shares and stock options	0		0
Weighted average common shares outstanding-diluted	74,977,240		63,648,704
Basic earnings per share:
Loss from continuing operations available to common stockholders per common share-basic (Note 12)	$ (0.02)		$ (0.12)
Income from discontinued operations per common share	$ 0.00		$ 1.18
Net (loss) income available to common stockholders per share-basic	$ (0.02)		$ 1.06
Diluted earnings per share:
Loss from continuing operations available to common stockholders per common share-diluted (Note 12)	$ (0.02)		$ (0.12)
Income from discontinued operations per common share	$ 0.00		$ 1.18
Net (loss) income available to common stockholders per share-diluted	$ (0.02)		$ 1.06
Stock options outstanding	1,528,000	[1],[2]	1,550,000	1,540,000
Market Measure-Based Restricted Stock Units (RSUs) [Member]
Diluted earnings per share:
Market measure-based RSUs			103,239
Chief Executive Officer [Member] | Market Measure-Based Restricted Stock Units (RSUs) [Member]
Diluted earnings per share:
Market measure-based RSUs	88,491

[1] As of March 31, 2013, 308,000 of the outstanding stock options were exercisable.

[2] The total intrinsic value of options outstanding at March 31, 2013 was $15.0 million.