Note 10 - Leases (Details Textual) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 5.7	$ 6.7
Operating Lease, Weighted Average Remaining Lease Term (Year)	4 years 8 months 12 days	4 years 8 months 12 days
Operating Lease, Weighted Average Discount Rate, Percent	4.60%	4.60%
Operating Lease, Liability, Current	$ 5.0	$ 5.0
Operating Lease, Expense	$ 1.5	$ 3.0