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Goodwill and Intangible Assets - Goodwill (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 29, 2024	Dec. 30, 2023
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 201,090	$ 211,444
Foreign currency translation	(425)	306
Goodwill, ending balance	199,548	201,090
FRT Metrology
Goodwill [Roll Forward]
Reduction - divesture		(10,660)
China Operations
Goodwill [Roll Forward]
Reduction - divesture	(1,117)
Probe Cards
Goodwill [Roll Forward]
Goodwill, beginning balance	178,424	178,424
Foreign currency translation	0	0
Goodwill, ending balance	177,369	178,424
Probe Cards | FRT Metrology
Goodwill [Roll Forward]
Reduction - divesture		0
Probe Cards | China Operations
Goodwill [Roll Forward]
Reduction - divesture	(1,055)
Systems
Goodwill [Roll Forward]
Goodwill, beginning balance	22,666	33,020
Foreign currency translation	(425)	306
Goodwill, ending balance	22,179	22,666
Systems | FRT Metrology
Goodwill [Roll Forward]
Reduction - divesture		$ (10,660)
Systems | China Operations
Goodwill [Roll Forward]
Reduction - divesture	$ (62)

X

- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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Amount of foreign currency translation gain (loss) which increases (decreases) asset representing future economic benefit from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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