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Schedule of Amortizable Intangible Assets (Parenthetical) (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jul. 03, 2016 | Oct. 02, 2016 | Dec. 31, 2015
Finite-Lived Intangible Assets |  |  |  |  |
Gross Carrying Amount |  | $ 497,547 | [1] | $ 546,388 | [2]
Accumulated Amortization |  | 382,428 | [1],[3] | 303,227 | [2]
Net Carrying Amount |  | 114,146 |  | 239,831 |
Intangible assets impairment |  | 83,339 |  |  |
Wireless Test |  |  |  |  |
Finite-Lived Intangible Assets |  |  |  |  |
Net Carrying Amount | $ 5,800 |  |  |  |
Intangible assets impairment | $ 83,000 | 83,339 |  |  |
Fully Amortized Intangibles |  |  |  |  |
Finite-Lived Intangible Assets |  |  |  |  |
Gross Carrying Amount |  | 48,000 |  | 98,200 |
Accumulated Amortization |  | 48,000 |  | 98,200 |
Net Carrying Amount |  | $ 0 |  | $ 0 |
[1] | In 2016, $48 million of amortizable intangible assets became fully amortized and have been eliminated from the gross carrying amount and accumulated amortization.
[2] | In 2015, $98.2 million of amortizable intangible assets became fully amortized and have been eliminated from the gross carrying amount and accumulated amortization.
[3] | Includes an $83 million impairment of Wireless Test amortizable intangible assets.

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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