Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Statement [Abstract]
Net sales	$ 916,663	$ 826,558	$ 703,592
Cost of sales	534,593	497,374	427,154
Gross margin	382,070	329,184	276,438
Selling, engineering and administration	198,649	171,248	158,389
Operating earnings	183,421	157,936	118,049
Interest income, net	(5,124)	(8,613)	(4,047)
Other pension and postretirement (income) costs	(112)	49	130
Earnings before income taxes	188,657	166,500	121,966
Provision for income taxes	47,023	41,558	29,368
Net earnings	$ 141,634	$ 124,942	$ 92,598
Earnings per share:
Basic	$ 4.82	$ 4.26	$ 3.16
Diluted	$ 4.79	$ 4.23	$ 3.14
Shares used in computation of earnings per share:
Basic	29,398	29,356	29,284
Impact of dilutive securities	171	178	172
Diluted	29,569	29,534	29,456