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Other Financial Information - Property and equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 7,043	$ 5,043
Less: accumulated depreciation and amortization	(3,597)	(2,941)
Property and equipment, net	3,446	2,102
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment	83	64
Laboratory equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	4,100	2,679
Computer equipment and software
Property, Plant and Equipment [Line Items]
Total property and equipment	1,106	927
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	1,141	1,072
Construction in progress
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 613	$ 301

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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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