Property,and Equipment - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 2,571	$ 2,274
Less accumulated depreciation	(1,800)	(1,643)
Total property and equipment, net	771	631
Laboratory Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	2,052	1,755
Computers and Software
Property Plant And Equipment [Line Items]
Property and equipment, gross	65	65
Office Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	37	37
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 417	$ 417

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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