Earnings Per Share - Summary of Computation of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Numerator:
Net (loss) income from continuing operations attributable to common stockholders	$ (8,921)	$ 4,336	$ (15,187)	$ 6,740
Earnings allocated to unvested participating securities	(14)	(10)	(40)	(23)
Numerator for (loss) income from continuing operations per common share - basic and diluted	(8,935)	4,326	(15,227)	6,717
Income from discontinued operations attributable to common stockholders	1,963	2,746	5,307	6,506
Earnings allocated to unvested participating securities	(4)	(7)	(14)	(31)
Numerator for income from discontinued operations per common share - basic and diluted	1,959	2,739	5,293	6,475
Numerator for (loss) income per common share - basic and diluted	$ (6,976)	$ 7,065	$ (9,934)	$ 13,192
Denominator:
Weighted average common shares outstanding	221,461,146	231,197,838	223,593,376	232,974,210
Effect of dilutive stock-based compensation plans		32,000		31,000
Denominator for diluted income per common share - weighted average shares	221,461,146	231,229,939	223,593,376	233,004,917
(Loss) income per Common Share - Basic and Diluted:
Continuing operations, net	$ (0.04)	$ 0.02	$ (0.07)	$ 0.03
Discontinued operations, net	0.01	0.01	0.03	0.03
(Loss) income per common share - basic and diluted	$ (0.03)	$ 0.03	$ (0.04)	$ 0.06