Note 4 - Certain Balance Sheet Components - Summary of Property and Equipment -10-Q (Details) - USD ($) $ in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|---|
| Property, plant and equipment, gross | $ 808 | $ 782 | $ 750 |
| Less: accumulated depreciation | (624) | (599) | (523) |
| Property and equipment, net | 184 | 183 | 227 |
| Equipment [Member] | |||
| Property, plant and equipment, gross | 675 | 675 | 643 |
| Furniture and Fixtures [Member] | |||
| Property, plant and equipment, gross | 6 | 6 | 6 |
| Leasehold Improvements [Member] | |||
| Property, plant and equipment, gross | $ 127 | $ 101 | $ 101 |
| 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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| X | ||||||||||
- 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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| 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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| X | ||||||||||
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