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Note 2 - Basis of Presentation and Significant Accounting Policies (Details Textual)
$ in Millions
12 Months Ended
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Number of Countries in which Entity Operates 50    
Research and Development Expense $ 17.2 $ 11.4 $ 7.3