Note 4 - Prepaid Expense and Other Current Assets - Schedule of Prepaid Expense and Other Current Assets (Details) - USD ($) $ in Thousands |
Jun. 30, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Prepaid insurance | $ 829 | $ 827 |
| Prepaid clinical development costs | 761 | 824 |
| Other prepaid expense | 90 | 208 |
| Total prepaid expense and other current assets | $ 1,680 | $ 1,859 |
| X | ||||||||||
- Definition Amount of asset related to consideration paid in advance for clinical development that provides economic benefits within a future period of one year or the normal operating cycle, if longer. No definition available.
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| X | ||||||||||
- Definition Amount of asset related to consideration paid in advance for other costs that provide economic benefits within a future period of 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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