Quarterly report [Sections 13 or 15(d)]

Note 3 - Cash and Cash Equivalents (Details Textual)

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Note 3 - Cash and Cash Equivalents (Details Textual) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Cash and Cash Equivalents [Abstract]    
Cash $ 0.6 $ 1.5
Cash and cash equivalents $ 0.0 $ 4.7