Property and Equipment, Net - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Total property and equipment	$ 14,555	$ 14,515
Less: accumulated depreciation	(6,721)	(6,118)
Property and equipment, net	7,834	8,397
Lab Equipment
Property Plant And Equipment [Line Items]
Total property and equipment	7,179	6,877
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Total property and equipment	594	594
Computer Equipment
Property Plant And Equipment [Line Items]
Total property and equipment	373	373
Software
Property Plant And Equipment [Line Items]
Total property and equipment	199	199
Leasehold Improvements
Property Plant And Equipment [Line Items]
Total property and equipment	$ 6,210	6,210
Construction in Process
Property Plant And Equipment [Line Items]
Total property and equipment		$ 262