Property and Equipment, Net - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment
Total property and equipment	$ 3,436	$ 3,030
Less: Accumulated depreciation	(1,836)	(1,200)
Property and equipment, net	1,600	1,830
Lab equipment
Property, Plant and Equipment
Total property and equipment	247	247
Office equipment
Property, Plant and Equipment
Total property and equipment	699	699
Leasehold improvement
Property, Plant and Equipment
Total property and equipment	$ 2,490	$ 2,084