Note 2 - Basis of Presentation, Principles of Consolidation and Significant Accounting Policies and Liquidity - Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Prepaid insurance | $ 1,035 | $ 512 |
| Vendor prepayments and deposits | 388 | 278 |
| Prepaid sponsored research | 34 | 11 |
| Non-trade receivables | 4 | 7 |
| Total prepaid expenses and other current assets | $ 1,461 | $ 808 |
| X | ||||||||||
- Definition The amount of prepaid sponsored research classified as current. No definition available.
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| X | ||||||||||
- Definition Amount of consideration and deposits paid in advance to vendors. No definition available.
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| X | ||||||||||
- Definition The sum of amounts currently receivable other than from customers. 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
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| 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
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| X | ||||||||||
- Definition Amount of asset related to consideration paid in advance for insurance that provides 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
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