v3.26.1
Note 5 - Fair Value Measurements (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Asset Impairment Charges $ 0 $ 0
Fair Value, Recurring [Member]    
Liabilities, Fair Value Disclosure $ 0 $ 0