Quarterly report pursuant to Section 13 or 15(d)

Note 12 - Share-based Compensation - Share-based Compensation Expense (Details)

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Note 12 - Share-based Compensation - Share-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
Total share-based compensation $ 565 $ 425 $ 1,496 $ 1,227
Research and Development Expense [Member]        
Total share-based compensation 147 158 449 430
General and Administrative Expense [Member]        
Total share-based compensation $ 418 $ 267 $ 1,047 $ 797