Goodwill and Purchased Intangible Assets - Changes in the Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2025	Mar. 30, 2024
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 329,980	$ 315,811
Goodwill, Acquired During Period		0
Goodwill, Ending Balance	330,037	$ 315,811
Lumina Instruments Inc (Member)
Goodwill [Line Items]
Goodwill, Acquired During Period	$ 57