Income Taxes - Domestic and Foreign Components of Income (Loss) Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
United States	$ (195,208)	$ (179,657)	$ (324,467)
Foreign	2,885	826	1,634
Loss before income taxes	$ (192,323)	$ (178,831)	$ (322,833)