Balance Sheet Details - Components of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Property Plant And Equipment [Line Items]
Property and equipment at cost	$ 6,393	$ 6,305
Less accumulated depreciation and amortization	3,721	3,480
Total	2,672	2,825
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment at cost	3,516	3,516
Lab Equipment
Property Plant And Equipment [Line Items]
Property and equipment at cost	1,977	1,889
Office Equipment
Property Plant And Equipment [Line Items]
Property and equipment at cost	859	859
Computers and Software
Property Plant And Equipment [Line Items]
Property and equipment at cost	$ 41	$ 41

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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