Note 18 - Business Segments - Reconciling Information Between Reportable Segments and Consolidated Totals (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue	[1]	$ 734,159	$ 663,084	$ 705,342
Operating income (loss)		152,803	169,357	214,013
Interest income		3,417	2,124	1,717
Interest expense, net		(87,743)	(82,658)	(77,953)
Derivatives and foreign currency transaction gains (losses)		(6,044)	(14,720)	3,802
Income attributable to sale of tax benefits		33,885	29,582	25,720
Other non-operating income (expense), net		(709)	(134)	1,418
Total consolidated income before income taxes and equity in earnings (losses) of investees		95,609	103,551	168,717
Intersegment Eliminations [Member]
Revenue		83,394	129,589	113,200
Consolidation, Eliminations [Member]
Revenue		$ (83,394)	$ (129,589)	$ (113,200)

[1] Revenues as reported in the geographic area in which they originate.