Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Income Statement [Abstract]
Net Sales	$ 593,255	$ 551,418
Cost of Sales	517,792	481,137
Gross Profit	75,463	70,281
Operating Expenses:
Selling	12,108	11,388
Administrative	21,414	22,690
Research, development and technical services	14,649	14,256
Deferred compensation (income) expense	(996)	1,778
Total Operating expenses	47,175	50,112
Operating Income	28,288	20,169
Other Income (Expense):
Interest, net	(4,126)	(3,071)
Other, net (Note 15)	502	2,362
Nonoperating Income (Expense), Total	(3,624)	(709)
Income Before Provision for Income Taxes	24,664	19,460
Provision for Income Taxes	4,953	5,567
Net Income	$ 19,711	$ 13,893
Net Income Per Common Share (Note 10):
Basic	$ 0.86	$ 0.61
Diluted	$ 0.86	$ 0.61
Shares Used to Compute Net Income Per Common Share (Note 10):
Basic	22,867	22,824
Diluted	22,890	22,948