Note 8 - Leases (Details Textual) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 0.7	$ 2.6
Operating Lease, Weighted Average Remaining Lease Term (Year)	3 years 8 months 12 days		3 years 9 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent	5.60%		5.60%
Operating Lease, Liability, Current	$ 5.2