Property and Equipment, Net - Summary of Property and Equipment, Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 8,426	$ 6,442
Less accumulated depreciation and amortization	(4,887)	(4,643)
Property and equipment, net	3,539	1,799
Laboratory equipment [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	2,951	2,443
Software and computer equipment [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	591	502
Machinery and equipment [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	2,046	989
Furniture and fixtures [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	181	90
Vehicles [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	428	395
Leasehold improvements [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 2,229	$ 2,023

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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