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, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Numerator:
Net loss from continuing operations attributable to common stockholders	$ (2,055)	$ (8,921)	$ (21,576)	$ (15,187)
Earnings allocated to unvested participating securities	(17)	(14)	(54)	(40)
Numerator for loss from continuing operations per common share - basic and diluted	(2,072)	(8,935)	(21,630)	(15,227)
Net income from discontinued operations attributable to common stockholders		1,963		5,307
Earnings allocated to unvested participating securities		(4)		(14)
Numerator for income from discontinued operations per common share - basic and diluted		1,959		5,293
Numerator for loss per common share - basic and diluted	$ (2,072)	$ (6,976)	$ (21,630)	$ (9,934)
Denominator:
Denominator for basic loss per common share - weighted average shares	218,706,356	221,461,146	218,689,696	223,593,376
Weighted average common shares outstanding	218,706,356	221,461,146	218,689,696	223,593,376
(Loss) Income per Common Share - Basic and Diluted:
Continuing operations, net	$ (0.01)	$ (0.04)	$ (0.10)	$ (0.07)
Discontinued operations, net		0.01		0.03
Loss per common share - basic and diluted	$ (0.01)	$ (0.03)	$ (0.10)	$ (0.04)