Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Statement [Abstract]
Net Sales	$ 551,418	$ 651,436
Cost of Sales	481,137	577,876
Gross Profit	70,281	73,560
Operating Expenses:
Selling	11,388	13,067
Administrative	22,690	22,639
Research, development and technical services	14,256	15,138
Deferred compensation expense	1,778	1,502
Total Operating expenses	50,112	52,346
Business restructuring expense		157
Operating Income	20,169	21,057
Other Income (Expense):
Interest, net	(3,071)	(2,822)
Other, net (Note 15)	2,362	1,668
Nonoperating Income (Expense), Total	(709)	(1,154)
Income Before Provision for Income Taxes	19,460	19,903
Provision for Income Taxes	5,567	3,761
Net Income	$ 13,893	$ 16,142
Net Income Per Common Share (Note 10):
Basic	$ 0.61	$ 0.71
Diluted	$ 0.61	$ 0.7
Shares Used to Compute Net Income Per Common Share (Note 10):
Basic	22,824	22,757
Diluted	22,948	22,994