Note 7 - Segment Reporting - Total Sales by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Total sales	$ 1,173,563	$ 1,070,667	$ 3,061,033	$ 2,958,997
External Net Sales [Member]
Total sales	1,173,563	1,070,667	3,061,033	2,958,997
Intersegment Sales [Member]
Total sales	0	0	0	0
Intersegment Eliminations [Member]
Total sales	(13,338)	(30,933)	(44,698)	(118,038)
Intersegment Eliminations [Member] | External Net Sales [Member]
Total sales	0	0	0	0
Intersegment Eliminations [Member] | Intersegment Sales [Member]
Total sales	(13,338)	(30,933)	(44,698)	(118,038)
Domestic [Member]
Total sales	1,011,347	886,365	2,541,242	2,395,292
Domestic [Member] | Operating Segments [Member]
Total sales	1,020,200	894,005	2,567,813	2,429,252
Domestic [Member] | Operating Segments [Member] | External Net Sales [Member]
Total sales	1,011,347	886,365	2,541,242	2,395,292
Domestic [Member] | Operating Segments [Member] | Intersegment Sales [Member]
Total sales	8,853	7,640	26,571	33,960
International [Member]
Total sales	162,216	184,302	519,791	563,705
International [Member] | Operating Segments [Member]
Total sales	166,701	207,595	537,918	647,783
International [Member] | Operating Segments [Member] | External Net Sales [Member]
Total sales	162,216	184,302	519,791	563,705
International [Member] | Operating Segments [Member] | Intersegment Sales [Member]
Total sales	$ 4,485	$ 23,293	$ 18,127	$ 84,078