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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The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Composition of Other Balance Sheet Items - Property and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Property and equipment
Property and equipment, gross	$ 29,117		$ 29,117		$ 28,935
Less accumulated depreciation and amortization	(17,241)		(17,241)		(15,405)
Property and equipment, net	11,876		11,876		13,530
Depreciation and amortization expense	600	$ 600	1,800	$ 1,900
Lab equipment and furniture
Property and equipment
Property and equipment, gross	13,174		13,174		13,069
Leasehold improvements
Property and equipment
Property and equipment, gross	14,023		14,023		14,023
Software
Property and equipment
Property and equipment, gross	883		883		883
Computer equipment
Property and equipment
Property and equipment, gross	$ 1,037		$ 1,037		$ 960