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Schedule of Segment Reporting Information by Segment Charges (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 01, 2018 | Jul. 02, 2017 | Jul. 01, 2018 | Jul. 02, 2017
Segment Reporting Information [Line Items] |  |  |  |
Contingent consideration adjustment |  |  | $ (8,468) | $ 2,133
Acquisition related expense | $ 2,500 |  | 3,300 |
Restructuring and other-employee severance | 2,389 | $ 2,288 | 2,076 | 4,799
Universal Robots (UR) |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Contingent consideration adjustment | (3,500) | 1,500 | (8,500) | 2,100
Semiconductor Test |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Cost of revenues-inventory charge | 1,613 | 1,624 | 3,779 | 2,943
Semiconductor Test | Severance And Benefits |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Restructuring and other-employee severance | 2,179 | 132 | 5,940 | (133)
System Test |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Cost of revenues-inventory charge | 256 | 473 | 576 | 1,358
Industrial Automation |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Restructuring and other-employee severance | 218 | 321 | 338 | 945
Wireless Test |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Cost of revenues-inventory charge | 627 | 472 | 1,463 | 994
Restructuring and other-lease impairment |  |  |  | 1,313
Corporate and Eliminations | Restructuring and other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Acquisition related expense | 2,544 |  | 3,318 |
Restructuring and other | 872 |  | 872 |
Restructuring and other-employee severance |  | 325 |  | 530
Corporate and Eliminations | Universal Robots (UR) | Restructuring and other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Contingent consideration adjustment | $ (3,500) | $ 1,499 | $ (8,468) | $ 2,133

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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=84229725&loc=d3e1043-128460 + Details
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