Note 5 - Leases - Maturities of Lease Liabilities (Details) $ in Millions	Jun. 30, 2023 USD ($)
2023, operating leases	$ 17.3
2023, finance lease	2.9
2024, operating leases	32.4
2024, finance lease	3.6
2025, operating leases	32.5
2025, finance lease	3.1
2026, operating leases	30.8
2026, finance lease	2.4
2027, operating leases	30.7
2027, finance lease	2.4
2028 and thereafter, operating leases	133.4
2028 and thereafter, finance lease	1.9
Total lease payments, operating leases	277.1
Total lease payments, finance leases	16.3
Less: Amount representing interest, operating leases	(43.0)
Less: Amount representing interest, finance leases	(1.9)
Present value of total lease payments, operating leases	234.1
Present value of total lease payments, finance leases	$ 14.4