Balance Sheet Disclosures- Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 9,487	$ 8,506
Less accumulated depreciation	(6,482)	(6,386)
Total property and equipment	3,005	2,120
Lab Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	5,741	4,221
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	1,778	1,894
Computer Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	871	869
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Property and equipment, gross	424	427
Software
Property Plant And Equipment [Line Items]
Property and equipment, gross	633	503
Construction in Process
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 40	$ 592

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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