Property and Equipment, Net - Summary of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Total property and equipment	$ 22,642	$ 21,774
Total accumulated depreciation	(3,315)	(1,148)
Property and equipment, net	19,327	20,626
Research and Lab Equipment
Property Plant And Equipment [Line Items]
Total property and equipment	3,376	3,616
Computer Equipment
Property Plant And Equipment [Line Items]
Total property and equipment	1,365	921
Computer Software
Property Plant And Equipment [Line Items]
Total property and equipment	44	27
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Total property and equipment	1,224	1,099
Leasehold Improvements
Property Plant And Equipment [Line Items]
Total property and equipment	$ 16,633	$ 16,111