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Schedule of Amortizable Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 30, 2014 | Dec. 31, 2013
Finite-Lived Intangible Assets |  |
Gross Carrying Amount | $ 543,236 | $ 543,236
Accumulated Amortization | 309,216 | 290,945
Net Carrying Amount | 234,020 | 252,291
Weighted Average Useful Life, years | 7 years | 7 years
Developed technology |  |
Finite-Lived Intangible Assets |  |
Gross Carrying Amount | 362,126 | 362,126
Accumulated Amortization | 206,551 | 193,756
Net Carrying Amount | 155,575 | 168,370
Weighted Average Useful Life, years | 6 years 3 months 18 days | 6 years 3 months 18 days
Customer Relationships |  |
Finite-Lived Intangible Assets |  |
Gross Carrying Amount | 146,276 | 146,276
Accumulated Amortization | 86,333 | 81,742
Net Carrying Amount | 59,943 | 64,534
Weighted Average Useful Life, years | 8 years | 8 years
Trade names and trademarks |  |
Finite-Lived Intangible Assets |  |
Gross Carrying Amount | 33,834 | 33,834
Accumulated Amortization | 15,332 | 14,447
Net Carrying Amount | 18,502 | 19,387
Weighted Average Useful Life, years | 9 years | 9 years
Customer backlog |  |
Finite-Lived Intangible Assets |  |
Gross Carrying Amount | 1,000 | 1,000
Accumulated Amortization | $ 1,000 | $ 1,000
Weighted Average Useful Life, years | 4 months 24 days | 4 months 24 days

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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 Amount after 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 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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