Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [Line Items]
Increase in valuation allowance	$ 393,430	$ 989,390	$ 254,454
Interest and penalties associated with uncertain tax benefits	0	0	0
Accrued interest and penalties	0	0	0
Unrecognized tax benefits	0	$ 0	$ 0
Federal
Income Taxes [Line Items]
Operating loss carryforwards	6,200,000
State
Income Taxes [Line Items]
Operating loss carryforwards	5,400,000
Foreign
Income Taxes [Line Items]
Operating loss carryforwards	$ 3,400