Quarterly report [Sections 13 or 15(d)]

Note 4 - Fair Value Measurements and Financial Instruments (Details Textual)

v3.26.1
Note 4 - Fair Value Measurements and Financial Instruments (Details Textual) - USD ($)
Mar. 31, 2026
Dec. 31, 2025
Fair Value Disclosures [Abstract]    
Assets, Fair Value Disclosure $ 0 $ 0