Note 8 - Business Segments - Reconciling Information Between Reportable Segments and Consolidated Totals (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenue	$ 224,166	$ 185,232
Operating income (loss)	52,583	53,166
Interest income	1,839	1,851
Interest expense, net	(30,968)	(23,631)
Derivatives and foreign currency transaction gains (losses)	(1,582)	(1,937)
Income attributable to sale of tax benefits	17,476	12,566
Other non-operating income, net	26	60
Total consolidated income before income taxes and equity in income of investees	39,374	42,075
Intersegment Eliminations [Member]
Revenue	20,597	7,772
Consolidation, Eliminations [Member]
Revenue	$ (20,597)	$ (7,772)