v3.26.1
Note 6 - Convertible Promissory Note Due to Novartis - Convertible Debt (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Convertible promissory note, opening balance $ 1,350 $ 1,300
Convertible promissory note, ending balance   1,350
Convertible Promissory Note Due to Novartis [Member]    
Convertible promissory note, opening balance 1,350  
Less debt discount, opening 0 0
Plus, accretion of debt discount, interest expense 0 0
Convertible promissory note, net of discount 1,350 1,300
Interest accretion, opening 0 0
Interest accrual, expense 50 50
Convertible promissory note, ending balance $ 1,400 $ 1,350