Schedule of Segment Reporting Information by Segment Charges (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jul. 03, 2022	Jul. 04, 2021	Jul. 03, 2022	Jul. 04, 2021
Segment Reporting Information [Line Items]
Other (income) expense, net - loss on convertible debt conversion	$ (9,436)	$ 87	$ (14,622)	$ (3,738)
Restructuring and other—AutoGuide contingent consideration adjustment			0	(7,227)
Semiconductor Test
Segment Reporting Information [Line Items]
Cost of revenues - inventory charge	2,071		2,315	1,234
Industrial Automation
Segment Reporting Information [Line Items]
Cost of revenues - inventory charge	831		1,197	1,285
Restructuring and other—acquisition related expenses and compensation				550
Wireless Test
Segment Reporting Information [Line Items]
Cost of revenues - inventory charge	2,099		2,976	672
Corporate And Eliminations
Segment Reporting Information [Line Items]
Restructuring and other	1,500	1,700	2,000	1,846
Corporate And Eliminations \| Restructuring and other
Segment Reporting Information [Line Items]
Restructuring and other—legal settlement charge	0	0	14,700	0
Other (income) expense, net - loss on convertible debt conversion	0	1,175	0	5,244
Restructuring and other—AutoGuide contingent consideration adjustment	0	0	0	(7,227)
Restructuring and other—acquisition related expenses and compensation	$ 0	$ 0	$ 0	$ (513)

Cost of revenues-provision for excess and obsolete inventory.

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- Definition

Restructuring and other charges related to litigation settlement.

+ References

No definition available.

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- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
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- Definition

Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
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- Definition

Amount of income (expense) related to nonoperating activities, classified as other.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.9)
-URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227

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- Definition

Amount of other expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses associated with a discontinued operation or an asset retirement obligation.

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-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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