Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 02, 2023	Apr. 03, 2022
Income Statement [Abstract]
Revenue	$ 201,124	$ 282,407
Cost of revenue	57,384	78,790
Gross margin	143,740	203,617
Research, development, and engineering expenses	38,542	36,054
Selling, general, and administrative expenses	83,037	80,835
Operating income	22,161	86,728
Foreign currency gain (loss)	394	(444)
Investment income	3,587	1,468
Other income (expense)	73	(48)
Income before income tax expense	26,215	87,704
Income tax expense	600	20,371
Net income	$ 25,615	$ 67,333
Net income per weighted-average common and common-equivalent share:
Basic (usd per share)	$ 0.15	$ 0.39
Diluted (usd per share)	$ 0.15	$ 0.38
Weighted-average common and common-equivalent shares outstanding:
Basic (shares)	172,624	174,146
Diluted (shares)	173,903	176,668
Cash dividends per common share (usd per share)	$ 0.070	$ 0.065