Composition of Other Balance Sheet Items - Property and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Property and equipment
Property and equipment, gross	$ 28,986		$ 28,935
Less accumulated depreciation and amortization	(16,017)		(15,405)
Property and equipment, net	12,969		13,530
Depreciation and amortization expense	600	$ 600
Lab equipment and furniture
Property and equipment
Property and equipment, gross	13,120		13,069
Leasehold improvements
Property and equipment
Property and equipment, gross	14,023		14,023
Software
Property and equipment
Property and equipment, gross	883		883
Computer equipment
Property and equipment
Property and equipment, gross	$ 960		$ 960

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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