Condensed Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 02, 2021	Sep. 26, 2020	Oct. 02, 2021	Sep. 26, 2020
Net Sales	$ 579,493	$ 480,987	$ 1,663,689	$ 1,341,719
Cost of sales	315,289	254,987	899,115	722,869
Gross profit	264,204	226,000	764,574	618,850
Selling, general and administrative expenses	71,032	71,195	215,042	196,958
Engineering, research and development expenses	41,972	36,295	121,692	98,499
Amortization of intangible assets	11,843	11,749	35,616	41,176
Operating income	139,357	106,761	392,224	282,217
Interest expense	9,395	12,781	31,744	36,345
Interest income	(56)	(130)	(181)	(664)
Other expense (income), net	1,917	(1,752)	29,807	(1,351)
Income before income tax expense	128,101	95,862	330,854	247,887
Income tax expense	10,640	16,559	39,947	39,542
Net income	$ 117,461	$ 79,303	$ 290,907	$ 208,345
Basic earnings per common share	$ 0.87	$ 0.59	$ 2.15	$ 1.55
Diluted earnings per common share	$ 0.86	$ 0.58	$ 2.13	$ 1.53
Weighted shares outstanding:
Basic	135,583	134,957	135,383	134,801
Diluted	136,631	136,252	136,556	136,209