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Goodwill and Intangible Assets - Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 30, 2024	Dec. 30, 2023
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 201,090	$ 211,444
Foreign currency translation	(320)	306
Goodwill, ending balance	199,653	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	(320)	306
Goodwill, ending balance	22,284	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 an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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Amount of increase (decrease), classified as other, of an asset representing the future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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