Income Taxes - Components of Loss before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Domestic	$ (90,584)	$ (72,164)	$ (47,218)
Foreign	(16,791)	(23,499)	(4,607)
Loss before income taxes	$ (107,375)	$ (95,663)	$ (51,825)