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Note 8 - Accrued Liabilities - Accrued Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Clinical trial costs $ 1,823 $ 1,291
Compensation 1,205 1,380
Research and development services 467 749
Professional services fees 165 120
Other 6 5
Total accrued liabilities $ 3,666 $ 3,545