v3.26.1
Note 5 - Revenue (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2026
Jun. 30, 2025
Statement Line Items [Line Items]      
Grant     $ 100
MSD [member]      
Statement Line Items [Line Items]      
Revenue from contracts with customers $ 0 $ 0