Property and Equipment, Net - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Property and equipment:
Property and equipment	$ 12,695	$ 12,050
Less: accumulated depreciation	(5,109)	(3,709)
Property and equipment, net	7,586	8,341
Lab equipment
Property and equipment:
Property and equipment	8,606	7,479
Leasehold improvements
Property and equipment:
Property and equipment	2,157	2,014
Furniture and fixtures
Property and equipment:
Property and equipment	822	750
Computers and software
Property and equipment:
Property and equipment	230	204
Office equipment
Property and equipment:
Property and equipment	3	9
Construction-in-process
Property and equipment:
Property and equipment	$ 877	$ 1,594

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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