v3.26.1
Note 4 - Investments - Details of Marketable Securities (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Fair value $ 41 $ 36
Basis 34 34
Cumulative unrealized (loss) gain 7 2
Equity Securities [Member]    
Fair value 41 36
Basis 34 34
Cumulative unrealized (loss) gain $ 7 $ 2