Income Taxes - Schedule of Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
Foreign	$ 0	$ 0	$ 0
Total current provision	0	0	0
Deferred:
Foreign	0	0	0
Total deferred provision	0	0	0
Provision for income taxes	0	0	0
US
Current:
Domestic	0	0	0
Deferred:
Domestic	0	0	0
Cayman Islands
Current:
Domestic	0	0	0
Deferred:
Domestic	$ 0	$ 0	$ 0