Goodwill and Purchased Intangible Assets - (Tables)

12 Months Ended

Dec. 28, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the Carrying Amount of Goodwill

Goodwill

The changes in the carrying amount of goodwill are as follows:

	Year Ended
	December 28, 2024		December 30, 2023
	(in thousands)
Balance, beginning of the period	$	315,811	$	315,811
Acquired business		14,169		—
Balance, end of the period	$	329,980	$	315,811

The $14.2 million of goodwill acquired in 2024 resulted from the purchase of Lumina Instruments, Inc. See Note 3, “Business Combination,” for further details.

Schedule of Purchased Intangible Assets

Purchased intangible assets as of December 28, 2024 and December 30, 2023 are as follows:

	Gross Carrying Amount		Accumulated Amortization		Net
	(in thousands)
December 28, 2024
Finite-lived intangible assets:
Developed technology	$	387,716	$	298,013	$	89,703
Customer and distributor relationships		73,321		39,370		33,951
Trademarks and trade names		14,171		10,368		3,803
Total identifiable intangible assets	$	475,208	$	347,751	$	127,457
December 30, 2023
Finite-lived intangible assets:
Developed technology	$	378,197	$	254,350	$	123,847
Customer and distributor relationships		73,321		34,782		38,539
Trademarks and trade names		14,171		9,182		4,989
Total identifiable intangible assets	$	465,689	$	298,314	$	167,375