Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Stockholders' Equity- Stock-based Compensation Expense (Details)

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Note 7 - Stockholders' Equity- Stock-based Compensation Expense (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Stock-based compensation $ 331 $ 561 $ 714 $ 599
Research and Development Expense [Member]        
Stock-based compensation 89 144 179 150
General and Administrative Expense [Member]        
Stock-based compensation $ 242 $ 417 $ 535 $ 449