CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Loss	Total
Balance at Dec. 31, 2023	$ 21,502		$ 1,003,380	$ (2,369)	$ 1,022,513
Balance (in shares) at Dec. 31, 2023	215,026,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued for stock incentive plans, net	$ 65	$ 1,861			1,926
Stock issued for stock incentive plans, net (in shares)	652,000
Stock purchased and retired	$ (133)	(1,861)	(7,888)		(9,882)
Stock purchased and retired (in shares)	(1,331,000)
Net income			27,467		27,467
Cash dividends ($0.04 per share)			(8,621)		(8,621)
Foreign currency translation				(113)	(113)
Balance at Mar. 31, 2024	$ 21,434		1,014,338	(2,482)	1,033,290
Balance (in shares) at Mar. 31, 2024	214,347,000
Balance at Dec. 31, 2024	$ 21,494		1,059,625	(2,828)	$ 1,078,291
Balance (in shares) at Dec. 31, 2024	214,942,000				214,972,351
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued for stock incentive plans, net	$ 150	2,629			$ 2,779
Stock issued for stock incentive plans, net (in shares)	1,501,000
Stock purchased and retired	$ (42)	$ (2,629)	(197)		(2,868)
Stock purchased and retired (in shares)	(424,000)
Net income			12,030		12,030
Cash dividends ($0.04 per share)			(8,653)		(8,653)
Foreign currency translation				7	7
Balance at Mar. 31, 2025	$ 21,602		$ 1,062,805	$ (2,821)	$ 1,081,586
Balance (in shares) at Mar. 31, 2025	216,019,000				216,019,054