Net Income (Loss) Per Common Share - Computation of Basic and Diluted EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Numerator
Income (loss) from continuing operations	$ (16,795)	$ (21,038)	$ (836)	$ (20,312)
Noncontrolling interests’ share in (earnings) loss from continuing operations	46	82	109	157
Net income (loss) attributable to common stockholders before discontinued operations	(16,749)	(20,956)	(727)	(20,155)
Income (loss) from discontinued operations	0	307	0	736
Net income (loss) attributable to common shares	$ (16,749)	$ (20,649)	$ (727)	$ (19,419)
Denominator
Weighted average shares outstanding – basic (in shares)	410,338	407,339	411,748	404,666
Weighted average shares outstanding – diluted (in shares)	410,338	407,339	411,748	404,666
Net income (loss) per share attributable to common stockholders
Continuing operations, basic (in dollars per share)	$ (0.04)	$ (0.05)	$ 0	$ (0.05)
Continuing operations, diluted (in dollars per share)	(0.04)	(0.05)	0	(0.05)
Discontinued operations, basic (in dollars per share)	0	0	0	0
Discontinued operations, diluted (in dollars per share)	$ 0	$ 0	$ 0	$ 0