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Goodwill and Intangible Assets - Goodwill (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 25, 2022	Dec. 25, 2021
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 212,299	$ 212,761
Foreign currency translation	(1,740)	(2,068)
Goodwill, ending balance	212,357	212,299
Baldwin Park
Goodwill [Roll Forward]
Goodwill, acquired during period		352
High Precision Devices, Inc.
Goodwill [Roll Forward]
Goodwill, acquired during period		1,254
Woburn
Goodwill [Roll Forward]
Goodwill, acquired during period	1,798
Probe Cards
Goodwill [Roll Forward]
Goodwill, beginning balance	178,424	178,072
Foreign currency translation	0	0
Goodwill, ending balance	178,424	178,424
Probe Cards | Baldwin Park
Goodwill [Roll Forward]
Goodwill, acquired during period		352
Probe Cards | High Precision Devices, Inc.
Goodwill [Roll Forward]
Goodwill, acquired during period		0
Probe Cards | Woburn
Goodwill [Roll Forward]
Goodwill, acquired during period	0
Systems
Goodwill [Roll Forward]
Goodwill, beginning balance	33,875	34,689
Foreign currency translation	(1,740)	(2,068)
Goodwill, ending balance	33,933	33,875
Systems | Baldwin Park
Goodwill [Roll Forward]
Goodwill, acquired during period		0
Systems | High Precision Devices, Inc.
Goodwill [Roll Forward]
Goodwill, acquired during period		$ 1,254
Systems | Woburn
Goodwill [Roll Forward]
Goodwill, acquired during period	$ 1,798

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.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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