Balance Sheet Components - Property and Equipment (Details) - USD ($) |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
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| Property and Equipment | |||||
| Property and equipment, gross | $ 3,541,000 | $ 3,541,000 | $ 2,869,000 | ||
| Less: accumulated depreciation and amortization | (2,711,000) | (2,711,000) | (2,649,000) | ||
| Property and equipment, net | 830,000 | 830,000 | 220,000 | ||
| Depreciation expense | 34,000 | $ 29,000 | 63,000 | $ 51,000 | |
| Laboratory equipment | |||||
| Property and Equipment | |||||
| Property and equipment, gross | 2,996,000 | 2,996,000 | 2,646,000 | ||
| Computer equipment and purchased software | |||||
| Property and Equipment | |||||
| Property and equipment, gross | 212,000 | 212,000 | 190,000 | ||
| Leasehold improvements | |||||
| Property and Equipment | |||||
| Property and equipment, gross | 33,000 | 33,000 | $ 33,000 | ||
| Construction in progress | |||||
| Property and Equipment | |||||
| Property and equipment, gross | $ 300,000 | $ 300,000 | |||
| X | ||||||||||
- Definition Amount of accumulated depreciation, depletion, and amortization of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition 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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount, before accumulated depreciation, depletion, and amortization, of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition 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. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount, after accumulated depreciation, depletion, and amortization, of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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