v3.26.1
Note 4 - Investments - Details of Marketable Securities (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Fair value $ 50 $ 36
Basis 34 34
Cumulative unrealized (loss) gain 16 2
Equity Securities [Member]    
Fair value 50 36
Basis 34 34
Cumulative unrealized (loss) gain $ 16 $ 2