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Schedule of Amortizable Intangible Assets (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Apr. 03, 2016 | Dec. 31, 2015
Finite-Lived Intangible Assets |  |
Gross Carrying Amount | $ 498,264 | $ 543,004
Accumulated Amortization | 274,990 | 303,173
Net Carrying Amount | $ 223,274 | $ 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 | $ 333,947 | $ 379,778
Accumulated Amortization | 186,118 | 220,306
Net Carrying Amount | $ 147,829 | $ 159,472
Weighted Average Useful Life, years | 6 years | 6 years
Customer Relationships |  |
Finite-Lived Intangible Assets |  |
Gross Carrying Amount | $ 110,658 | $ 110,340
Accumulated Amortization | 68,114 | 63,718
Net Carrying Amount | $ 42,544 | $ 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 | $ 53,169 | $ 52,396
Accumulated Amortization | 20,468 | 18,879
Net Carrying Amount | $ 32,701 | $ 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 | $ 320
Accumulated Amortization | 120 | 100
Net Carrying Amount | $ 200 | $ 220
Weighted Average Useful Life, years | 4 years | 4 years
Customer backlog |  |
Finite-Lived Intangible Assets |  |
Gross Carrying Amount | $ 170 | $ 170
Accumulated Amortization | $ 170 | $ 170
Weighted Average Useful Life, years | 3 months 18 days | 3 months 18 days

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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 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=26713463&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=26713463&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=26713463&loc=d3e16323-109275 + Details
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