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Schedule of Segment Reporting Information by Segment Charges (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Apr. 01, 2018 | Apr. 02, 2017
Segment Reporting Information [Line Items] |  |
Acquisition related expense | $ 800 |
Restructuring and other-employee severance | (313) | $ 2,511
Contingent consideration adjustment | (4,968) | 634
Universal Robots |  |
Segment Reporting Information [Line Items] |  |
Contingent consideration adjustment | (5,000) | 600
Semiconductor Test |  |
Segment Reporting Information [Line Items] |  |
Cost of revenues-inventory charge | 2,166 | 1,319
Semiconductor Test | Severance And Benefits |  |
Segment Reporting Information [Line Items] |  |
Restructuring and other-employee severance | 3,761 | (265)
System Test |  |
Segment Reporting Information [Line Items] |  |
Cost of revenues-inventory charge | 320 | 885
Industrial Automation |  |
Segment Reporting Information [Line Items] |  |
Cost of revenues-inventory charge | 200 |
Restructuring and other-employee severance | 120 | 624
Wireless Test |  |
Segment Reporting Information [Line Items] |  |
Cost of revenues-inventory charge | 836 | 522
Restructuring and other-employee severance |  | 1,313
Corporate and Other | Restructuring and other |  |
Segment Reporting Information [Line Items] |  |
Acquisition related expense | 774 |
Restructuring and other-employee severance |  | 205
Corporate and Other | Universal Robots | Restructuring and other |  |
Segment Reporting Information [Line Items] |  |
Contingent consideration adjustment | $ (4,968) | $ 634

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- Definition Cost of revenues-provision for excess and obsolete inventory. + 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e1043-128460 + Details
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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/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479 + Details
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- Definition Amount of restructuring charges, remediation cost, and asset impairment loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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