Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 26, 2025	Sep. 27, 2024	Sep. 26, 2025	Sep. 27, 2024
Income Statement [Abstract]
Net sales	$ 444,808	$ 436,715	$ 1,296,796	$ 1,247,868
Cost of sales	358,685	355,777	1,051,836	1,014,859
Gross margin	86,123	80,938	244,960	233,009
Selling, general, and administrative expense	38,256	35,009	108,740	104,454
Research and development expense	6,548	7,868	19,466	22,712
Restructuring expense	212	1,493	2,729	6,161
Other—net	6,164	5,309	15,068	14,112
Operating profit	34,943	31,259	98,957	85,570
Other non-operating (income)—net	(711)	(642)	(1,944)	(1,925)
Interest expense—net	7,544	8,839	22,691	25,920
Income before income taxes	28,110	23,062	78,210	61,575
Income tax expense	2,698	768	9,960	6,836
Net income	$ 25,412	$ 22,294	$ 68,250	$ 54,739
Basic earnings per share:
Net income per share of common stock (in dollars per share)	$ 1.23	$ 1.07	$ 3.29	$ 2.64
Diluted earnings per share:
Net income per share of common stock (in dollars per share)	$ 1.22	$ 1.07	$ 3.27	$ 2.61
Weighted-average number of shares of common stock outstanding:
Basic (in shares)	20,731	20,749	20,763	20,723
Diluted (in shares)	20,883	20,920	20,893	20,935