Earnings per Common Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Numerator:
Net income (loss) attributable to common shareholders	$ (2,003)	$ (4,916)
Less: dividends paid on unvested share-based compensation	(125)	(79)
Undistributed earnings attributable to share-based compensation	0	0
Net income (loss) available to common shareholders	$ (2,128)	$ (4,995)
Denominator:
Weighted-average number of common shares-basic	63,762,930	60,996,196
Effect of dilutive share-based compensation	0	0
Weighted-average number of common shares-diluted	63,762,930	60,996,196
Net income (loss) per share available to common shareholders-basic	$ (0.03)	$ (0.08)
Net income (loss) per share available to common shareholders-diluted	$ (0.03)	$ (0.08)
Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	344,962	130,130