Note 10 - Segment Information, Significant Customers, Industry Concentration and Geographic Areas (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Reconciliation of Revenue from Segments to Consolidated [Table Text Block]

	Year Ended December 31,
	2023					2022					2021
	(in thousands)
	Amount		Percent			Amount		Percent			Amount		Percent
United States - domestic shipments	$	512,552		63.2		$	629,921		66.5		$	474,291		67.9
Shipments to or from Mexico		296,696		36.6			313,885		33.2			223,315		32.0
Shipments to or from Canada		1,559		0.2			3,056		0.3			891		0.1
Total	$	810,807		100	%	$	946,862		100	%	$	698,497		100	%