Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2024	Oct. 01, 2023	Sep. 29, 2024	Oct. 01, 2023
Income Statement [Abstract]
Revenue	$ 234,742	$ 197,241	$ 684,831	$ 640,877
Cost of revenue	75,343	54,467	216,896	174,680
Gross margin	159,399	142,774	467,935	466,197
Research, development, and engineering expenses	35,210	32,580	107,277	104,707
Selling, general, and administrative expenses	92,625	82,307	276,433	248,767
Loss (recovery) from fire (Note 17)	0	(2,750)	0	(5,250)
Operating income	31,564	30,637	84,225	117,973
Foreign currency gain (loss)	1,221	(8,699)	1,086	(9,910)
Investment income	3,561	4,891	9,797	12,573
Other income (expense)	209	173	581	358
Income before income tax expense	36,555	27,002	95,689	120,994
Income tax expense	6,964	8,086	17,864	18,989
Net income	$ 29,591	$ 18,916	$ 77,825	$ 102,005
Net income per weighted-average common and common-equivalent share:
Basic (usd per share)	$ 0.17	$ 0.11	$ 0.45	$ 0.59
Diluted (usd per share)	$ 0.17	$ 0.11	$ 0.45	$ 0.59
Weighted-average common and common-equivalent shares outstanding:
Basic (shares)	171,519	172,169	171,588	172,408
Diluted (shares)	172,753	173,354	172,733	173,659
Cash dividends per common share (usd per share)	$ 0.075	$ 0.070	$ 0.225	$ 0.210