Shareholders' Equity and Loss Per Common Share - Basic and Diluted Earnings (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Shareholders' Equity and Loss Per Common Share
Net loss	$ (77)	$ (24,069)
Net (income) loss attributable to redeemable noncontrolling interests	(10)	2,230
Net loss attributable to noncontrolling interests	55	1,108
Net income (loss) attributable to common shareholders	$ (32)	$ (20,731)
Weighted average number of common shares outstanding - basic	126,682	131,540
Weighted average number of common shares outstanding - diluted	126,682	131,540
Earnings (loss) per common share - basic		$ (0.16)
Earnings (loss) per common share - diluted		$ (0.16)