Basis of Presentation - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 1,609	$ 1,437
Less accumulated depreciation and amortization	(919)	(702)
Property and equipment, net	690	735
Laboratory Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	1,088	945
Computer Equipment and Software
Property Plant And Equipment [Line Items]
Property and equipment, gross	207	182
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Property and equipment, gross	178	178
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 136	$ 132

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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