Note 7 - Stockholders' Equity- Stock-based Compensation Expense (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2022 |
|
| Stock-based compensation | $ 906 | $ 649 |
| Research and Development Expense [Member] | ||
| Stock-based compensation | 199 | 297 |
| General and Administrative Expense [Member] | ||
| Stock-based compensation | $ 707 | $ 352 |
| X | ||||||||||
- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
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