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Schedule of Amortizable Intangible Assets (Parenthetical) (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jul. 03, 2016 | Jul. 03, 2016 | Dec. 31, 2015
Finite-Lived Intangible Assets |  |  |  |  |
Gross Carrying Amount | $ 497,547 | [1] | $ 497,547 | [1] | $ 546,388
Accumulated Amortization | 373,929 | [1],[2] | 373,929 | [1],[2] | 303,227
Net Carrying Amount | 122,069 |  | 122,069 |  | $ 239,831
Intangible assets impairment | 83,339 |  | 83,339 |  |
Wireless Test |  |  |  |  |
Finite-Lived Intangible Assets |  |  |  |  |
Intangible assets impairment | 83,339 |  | 83,339 |  |
Fully Amortized Intangibles |  |  |  |  |
Finite-Lived Intangible Assets |  |  |  |  |
Gross Carrying Amount | 48,000 |  | 48,000 |  |
Accumulated Amortization | 48,000 |  | 48,000 |  |
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] | Includes an $83 million impairment of Wireless Test amortizable intangible assets.

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