Earnings Per Share - Summary of Computation of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Numerator:
Net (loss) income from continuing operations attributable to common stockholders	$ (8,234)	$ 595	$ (6,266)	$ 2,404
Earnings allocated to unvested participating securities	(14)	(4)	(26)	(13)
Numerator for (loss) income from continuing operations per common share - basic and diluted	(8,248)	591	(6,292)	2,391
Income from discontinued operations attributable to common stockholders	1,964	1,860	3,344	3,760
Earnings allocated to unvested participating securities	(4)	(14)	(11)	(24)
Numerator for income from discontinued operations per common share - basic and diluted	1,960	1,846	3,333	3,736
Numerator for (loss) income per common share - basic and diluted	$ (6,288)	$ 2,437	$ (2,959)	$ 6,127
Denominator:
Weighted average common shares outstanding	221,573,199	234,329,904	224,671,206	233,877,117
Effect of dilutive stock-based compensation plans		26,000		31,000
Denominator for diluted income per common share - weighted average shares	221,573,199	234,355,864	224,671,206	233,908,236
(Loss) income per Common Share - Basic and Diluted:
Continuing operations, net	$ (0.04)	$ 0.00	$ (0.03)	$ 0.01
Discontinued operations, net	0.01	0.01	0.02	0.02
(Loss) income per common share - basic and diluted	$ (0.03)	$ 0.01	$ (0.01)	$ 0.03