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]
Property, plant and equipment, gross	$ 42,761	$ 41,900
Less: Accumulated depreciation and amortization	(11,876)	(10,490)
Property and equipment, net	30,885	31,410
Computer Equipment and Software
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	159	159
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	1,288	1,288
Laboratory Equipment
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	15,812	14,837
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	23,961	23,949
Construction-In-Process
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 1,541	$ 1,667

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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