Note 8 - Leases (Details Textual) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 5.2	$ 3.7
Operating Lease, Weighted Average Remaining Lease Term (Year)	3 years 7 months 6 days		3 years 9 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent	5.40%		5.60%
Operating Lease, Liability, Current	$ 5.9
Letters of Credit Outstanding, Amount	$ 0.8