Schedule of Segment Reporting Information by Segment Charges (Detail) - USD ($) $ in Thousands	3 Months Ended
Apr. 03, 2022	Apr. 04, 2021
Segment Reporting Information [Line Items]
Restructuring and other—AutoGuide contingent consideration adjustment	$ 0	$ (7,227)
Other (income) expense, net - loss on convertible debt conversion	(5,187)	(3,824)
Semiconductor Test
Segment Reporting Information [Line Items]
Cost of revenues - inventory charge		1,079
Industrial Automation
Segment Reporting Information [Line Items]
Cost of revenues - inventory charge		1,221
Wireless Test
Segment Reporting Information [Line Items]
Cost of revenues - inventory charge	877
Corporate And Eliminations \| Restructuring and other
Segment Reporting Information [Line Items]
Restructuring and other—legal settlement charge	14,700	0
Restructuring and other—AutoGuide contingent consideration adjustment	0	(7,227)
Other (income) expense, net - loss on convertible debt conversion	0	4,069
Restructuring and other—acquisition related expenses and compensation	$ 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.

+ Details

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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
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=123586518&loc=d3e1043-128460

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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)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e7008-128479

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- Definition

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

+ References

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 http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227

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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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