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Balance Sheet Components - Property and Equipment (Details) - USD ($)	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Property and Equipment
Property and equipment, gross	$ 2,959,000		$ 2,869,000
Less: accumulated depreciation and amortization	(2,677,000)		(2,649,000)
Property and equipment, net	282,000		220,000
Depreciation expense	29,000	$ 22,000
Laboratory equipment
Property and Equipment
Property and equipment, gross	2,713,000		2,646,000
Computer equipment and purchased software
Property and Equipment
Property and equipment, gross	190,000		190,000
Leasehold improvements
Property and Equipment
Property and equipment, gross	33,000		$ 33,000
Construction in progress
Property and Equipment
Property and equipment, gross	$ 23,000

X

- Definition

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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