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Schedule of Segment Reporting Information by Segment Charges (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 02, 2017 | Jul. 03, 2016 | Jul. 02, 2017 | Jul. 03, 2016
Segment Reporting Information [Line Items] |  |  |  |
Goodwill impairment |  | $ 254,946 |  | $ 254,946
Acquired intangible assets impairment |  | 83,339 |  | 83,339
Restructuring and other-employee severance | $ 2,288 | 2,608 | $ 4,799 | 4,195
Contingent consideration adjustment |  | 1,300 | 2,133 | 2,478
Property insurance recovery |  |  |  | 5,051
Universal Robots |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Contingent consideration adjustment | 1,500 | 800 | 2,100 | 1,900
Avionics Interface Technologies, LLC |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Contingent consideration adjustment |  | 600 |  | 600
Semiconductor Test |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Cost of revenues-inventory charge | 1,624 | 2,234 | 2,943 | 5,919
Restructuring and other-employee severance | 132 | 337 | (133) | 751
Industrial Automation |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Restructuring and other-employee severance | 321 |  | 945 |
Wireless Test |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Cost of revenues-inventory charge | 472 | 5,271 | 994 | 5,876
Restructuring and other-lease impairment |  |  | 1,313 |
Goodwill impairment |  | 254,946 |  | 254,946
Acquired intangible assets impairment |  | 83,339 |  | 83,339
Restructuring and other-employee severance |  | 967 |  | 967
Corporate And Eliminations |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Restructuring and other-employee severance | 325 |  | 530 |
Property insurance recovery |  | (5,051) |  | (5,051)
Corporate And Eliminations | Universal Robots | Restructuring and other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Contingent consideration adjustment | $ 1,499 | 755 | $ 2,133 | 1,928
Corporate And Eliminations | Impairment of fixed assets and expenses related to the Japan earthquake |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Building impairment and other expenses |  | 5,051 |  | 5,051
Corporate And Eliminations | Avionics Interface Technologies, LLC |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Contingent consideration adjustment |  | $ 550 |  | $ 550

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