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Schedule of Segment Reporting Information by Segment Charges (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 01, 2017 | Oct. 02, 2016 | Jul. 03, 2016 | Oct. 01, 2017 | Oct. 02, 2016
Segment Reporting Information [Line Items] |  |  |  |  |
Goodwill impairment |  |  |  |  | $ 254,946
Acquired intangible assets impairment |  |  |  |  | 83,339
Restructuring and other-employee severance | $ (4,407) | $ 12,177 |  | $ 392 | 16,372
Contingent consideration adjustment |  |  |  | 1,847 | 10,451
Property insurance recovery |  |  |  | 4,309 |
Universal Robots |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Contingent consideration adjustment | (300) | 8,000 |  | 1,800 | 9,900
Avionics Interface Technologies, LLC |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Contingent consideration adjustment |  |  |  |  | 600
Semiconductor Test |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Cost of revenues-inventory charge | 743 | 2,351 |  | 3,686 | 8,270
Restructuring and other-employee severance | 375 | 2,047 |  | 242 | 2,798
Wireless Test |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Cost of revenues-inventory charge | 735 | 561 |  | 1,729 | 6,437
Restructuring and other-lease impairment | (393) |  |  | 900 |
Goodwill impairment |  |  | $ 254,946 |  | 254,946
Acquired intangible assets impairment |  |  | $ 83,300 |  | 83,339
Restructuring and other-employee severance |  | 1,672 |  | 31 | 2,639
Corporate And Eliminations |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Restructuring and other-employee severance |  |  |  | 530 |
Property insurance recovery | (5,064) |  |  | (5,064) | (5,051)
Corporate And Eliminations | Cost of revenues |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Pension actuarial losses (gains) |  | 364 |  | (664) | (250)
Corporate And Eliminations | Selling and administrative |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Pension actuarial losses (gains) |  | 192 |  | (1,094) | (441)
Corporate And Eliminations | Engineering and development |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Pension actuarial losses (gains) |  | 106 |  | (746) | (509)
Corporate And Eliminations | Universal Robots | Restructuring and other |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Contingent consideration adjustment | (286) | 7,973 |  | 1,847 | 9,902
Corporate And Eliminations | Impairment of fixed assets and expenses related to the Japan earthquake |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Building impairment and other expenses | 755 |  |  | 755 | 5,051
Corporate And Eliminations | Avionics Interface Technologies, LLC |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Contingent consideration adjustment |  |  |  |  | 550
Industrial Automation |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Cost of revenues-inventory charge | 130 |  |  | 130 |
Restructuring and other-employee severance | $ 206 | $ 532 |  | $ 1,150 | $ 532

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