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Schedule of Amortizable Intangible Assets (Detail) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jul. 03, 2016 | Dec. 31, 2015
Finite-Lived Intangible Assets |  |  |
Gross Carrying Amount | $ 497,547 | [1] | $ 546,388
Accumulated Amortization | 373,929 | [1],[2] | 303,227
Foreign Currency Translation Adjustment | (1,549) |  | (3,330)
Net Carrying Amount | $ 122,069 |  | $ 239,831
Weighted Average Useful Life, years | 6 years 9 months 18 days |  | 6 years 8 months 12 days
Developed technology |  |  |
Finite-Lived Intangible Assets |  |  |
Gross Carrying Amount | $ 333,421 | [1] | $ 382,262
Accumulated Amortization | 259,364 | [1],[2] | 220,346
Foreign Currency Translation Adjustment | (1,138) |  | (2,444)
Net Carrying Amount | $ 72,919 |  | $ 159,472
Weighted Average Useful Life, years | 6 years |  | 6 years
Customer Relationships |  |  |
Finite-Lived Intangible Assets |  |  |
Gross Carrying Amount | $ 110,602 | [1] | $ 110,602
Accumulated Amortization | 89,674 | [1],[2] | 63,722
Foreign Currency Translation Adjustment | (119) |  | (258)
Net Carrying Amount | $ 20,809 |  | $ 46,622
Weighted Average Useful Life, years | 7 years 10 months 24 days |  | 7 years 10 months 24 days
Trademarks and tradenames |  |  |
Finite-Lived Intangible Assets |  |  |
Gross Carrying Amount | $ 53,034 | [1] | $ 53,034
Accumulated Amortization | 24,581 | [1],[2] | 18,889
Foreign Currency Translation Adjustment | (292) |  | (628)
Net Carrying Amount | $ 28,161 |  | $ 33,517
Weighted Average Useful Life, years | 9 years 6 months |  | 9 years 6 months
Non-compete agreements |  |  |
Finite-Lived Intangible Assets |  |  |
Gross Carrying Amount | $ 320 | [1] | $ 320
Accumulated Amortization | 140 | [1],[2] | 100
Net Carrying Amount | $ 180 |  | $ 220
Weighted Average Useful Life, years | 4 years |  | 4 years
Customer backlog |  |  |
Finite-Lived Intangible Assets |  |  |
Gross Carrying Amount | $ 170 | [1] | $ 170
Accumulated Amortization | $ 170 | [1],[2] | $ 170
Weighted Average Useful Life, years | 3 months 18 days |  | 3 months 18 days
[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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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + 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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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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