Earnings Per Share - Summary of Computation of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Numerator:
Net loss attributable to common stockholders	$ (6,494)	$ (9,731)
Earnings allocated to unvested participating securities	(9)
Numerator for earnings per common share - basic and diluted	$ (6,503)	$ (9,731)
Denominator:
Denominator for basic loss per common share - weighted average shares	212,403,593	212,106,718
Denominator for diluted loss per common share - weighted average shares	212,403,593	212,106,718
Loss per common share - basic and diluted	$ (0.03)	$ (0.05)