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Note 6 - Capitalized Product Development Costs (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Mar. 31, 2025
Research and Development Asset Acquired in Transaction Other than Business Combination or Joint Venture Formation, Capitalized Cost $ 506 $ 283 $ 946 $ 430  
In Process Research and Development [Member]          
Finite-Lived Intangible Asset, Useful Life (Year)         10 years