Note 6 - Leases - Balance Sheet Information (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Assets [Abstract]
Other Assets, Noncurrent	$ 157,023	$ 211,277
Liabilities, Current [Abstract]
Accrued Liabilities, Current	137,868	115,791
Liabilities, Noncurrent [Abstract]
Other Liabilities, Noncurrent	$ 86,927	88,655
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets, Noncurrent
Operating lease ROU assets	$ 8,910	8,355
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued Liabilities, Current
Operating lease liabilities	$ 2,635	2,303
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Noncurrent
Operating Lease, Liability, Noncurrent	$ 5,920	$ 5,565