Note 5 - 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	$ 0.5	$ 0.5	$ 1.5	$ 1.5