Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Statement [Abstract]
Net sales	$ 826,558	$ 703,592	$ 565,568
Cost of sales	497,374	427,154	345,598
Gross margin	329,184	276,438	219,970
Selling, engineering and administration	171,248	158,389	132,675
Operating earnings	157,936	118,049	87,295
Interest income, net	(8,613)	(4,047)	(552)
Other pension and postretirement costs	49	130	130
Earnings before income taxes	166,500	121,966	87,717
Provision for income taxes	41,558	29,368	21,221
Net earnings	$ 124,942	$ 92,598	$ 66,496
Earnings per share:
Basic	$ 4.26	$ 3.16	$ 2.28
Diluted	$ 4.23	$ 3.14	$ 2.26
Shares used in computation of earnings per share:
Basic	29,356	29,284	29,218
Impact of dilutive securities	178	172	158
Diluted	29,534	29,456	29,376