Note 7 - Segment Reporting - Total Sales by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Total sales	$ 998,197	$ 1,000,420	$ 1,887,470	$ 1,888,330
External Net Sales [Member]
Total sales	998,197	1,000,420	1,887,470	1,888,330
Intersegment Sales [Member]
Total sales	0	0	0	0
Intersegment Eliminations [Member]
Total sales	(13,450)	(38,555)	(31,360)	(87,104)
Intersegment Eliminations [Member] | External Net Sales [Member]
Total sales	0	0	0	0
Intersegment Eliminations [Member] | Intersegment Sales [Member]
Total sales	(13,450)	(38,555)	(31,360)	(87,104)
Domestic [Member]
Total sales	817,558	804,539	1,529,895	1,508,927
Domestic [Member] | Operating Segments [Member]
Total sales	827,139	815,252	1,547,613	1,535,247
Domestic [Member] | Operating Segments [Member] | External Net Sales [Member]
Total sales	817,558	804,539	1,529,895	1,508,927
Domestic [Member] | Operating Segments [Member] | Intersegment Sales [Member]
Total sales	9,581	10,713	17,718	26,320
International [Member]
Total sales	180,639	195,881	357,575	379,403
International [Member] | Operating Segments [Member]
Total sales	184,508	223,723	371,217	440,187
International [Member] | Operating Segments [Member] | External Net Sales [Member]
Total sales	180,639	195,881	357,575	379,403
International [Member] | Operating Segments [Member] | Intersegment Sales [Member]
Total sales	$ 3,869	$ 27,842	$ 13,642	$ 60,784