Income Taxes - Schedule of Company's Loss from Operations Before Income Tax Expense by Jurisdiction (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net loss	$ (418,259)	$ (132,694)	$ (184,748)
Domestic
Net loss	(455,253)	(124,189)	(176,290)
Foreign
Net loss	$ 36,994	$ (8,505)	$ (8,458)