Segment and Geographic Information - Disaggregation of Segment Expenses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
Revenue	$ 216,036	$ 210,797
Cost of revenue	71,713	68,860
Gross profit	144,323	141,937
Stock-based compensation	9,939	13,302
Total research, development, and engineering expenses	34,727	37,105
Total selling, general, and administrative expenses	83,504	90,628
Operating income	26,092	14,204
Foreign currency gain (loss)	(2,453)	46
Investment income	3,990	3,120
Other income (expense)	169	196
Income before income tax expense	27,798	17,566
Income tax expense	4,195	5,544
Net income	23,603	12,022
Cost of revenue	3,018	3,150
Research, Development and Engineering Expenses
Segment Reporting Information [Line Items]
Salaries and fringe benefits	18,274	19,717
Incentive compensation	1,071	984
Stock-based compensation	4,696	4,389
Depreciation and amortization	755	823
Other Expenses	9,931	11,192
Segment, General, And Engineering Expense
Segment Reporting Information [Line Items]
Salaries and fringe benefits	42,195	44,682
Incentive compensation	10,882	11,060
Stock-based compensation	4,575	8,308
Depreciation and amortization	4,161	4,119
Other Expenses	$ 21,691	$ 22,459