Note 4 - Prepaid Expenses and Other Current Assets - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands |
Sep. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Metals to be used in research and development | $ 2,626 | $ 2,736 |
| Grants receivable | 806 | 0 |
| Prepaid clinical and CRO expenses | 291 | 286 |
| Research and development tax credits receivable | 559 | 590 |
| Other | 241 | 139 |
| Total prepaid expenses and other current assets | $ 4,523 | $ 3,751 |
| X | ||||||||||
- Definition The amount of clinical and CRO expenses that have been prepaid No definition available.
|
| X | ||||||||||
- Definition Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from research and development tax credits receivable. No definition available.
|
| X | ||||||||||
- Definition Carrying amount as of the balance sheet date of amounts due under the terms of governmental, corporate, or foundation grants. For classified balance sheets, represents the current amount receivable, that is amounts expected to be collected within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of current assets classified as other. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of consideration paid in advance for supplies that provide economic benefits within a future period of one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|