Income Taxes - Loss from Continuing Operations Before Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Jun. 30, 2021	Sep. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
United States					$ (132,910)	$ (52,224)
Foreign					832	2,505
Loss from continuing operations before income taxes	$ (12,543)	$ (14,033)	$ (23,955)	$ (36,498)	$ (132,078)	$ (49,719)