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Note 7 - Goodwill and Intangible Assets (Details Textual) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Amortization of Intangible Assets Including Cost of Amortization $ 0.2 $ 0.7 $ 0.2 $ 0.7
Amortization of Intangible Assets 0.1 0.1 0.2 0.2
Cost, Amortization $ 0.2 $ 0.2 $ 0.6 $ 0.6