Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2022	Jul. 02, 2021	Jul. 01, 2022	Jul. 02, 2021
Income Statement [Abstract]
Net sales	$ 445,295	$ 370,999	$ 894,340	$ 725,385
Cost of sales	357,868	301,418	731,622	589,008
Gross margin	87,427	69,581	162,718	136,377
Selling, general, and administrative expense	42,047	38,060	83,708	74,836
Research and development expense	7,592	6,604	14,666	12,810
Restructuring expense (income)	0	0	1,076	(378)
Other—net	5,928	4,194	11,801	8,668
Operating profit	31,860	20,723	51,467	40,441
Other non-operating income—net	(1,168)	(1,277)	(2,337)	(2,553)
Interest expense—net	4,701	858	8,437	1,619
Income before income taxes	28,327	21,142	45,367	41,375
Income tax expense	5,072	3,274	8,093	6,740
Net income	$ 23,255	$ 17,868	$ 37,274	$ 34,635
Basic earnings per share:
Net income per share of common stock (in dollars per share)	$ 1.13	$ 0.87	$ 1.82	$ 1.70
Diluted earnings per share:
Net income per share of common stock (in dollars per share)	$ 1.12	$ 0.87	$ 1.80	$ 1.68
Weighted-average number of shares of common stock outstanding:
Basic (in shares)	20,517	20,429	20,491	20,402
Diluted (in shares)	20,723	20,651	20,743	20,647