Note 10 - Leases (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating Lease, Weighted Average Remaining Lease Term	5 years 4 months 24 days	5 years 6 months
Operating Lease, Weighted Average Discount Rate, Percent	2.27%	1.97%
Operating Lease, Payments	$ 87.6	$ 59.5	$ 49.7
Operating Lease, Expense	87.7	58.6	50.2
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	213.9	101.9	$ 57.0
Mass Movement, Inc. [Member]
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 28.6	$ 4.4