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Goodwill and Identified Intangible Assets - Summary of Goodwill and Identified Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified | Mar. 29, 2013 | Dec. 31, 2012
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Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 221,704 | $ 221,704
Accumulated Amortization | (170,290) | (163,257)
Total | 51,414 | 58,447
Developed core technology [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 136,145 | 136,145
Accumulated Amortization | (107,394) | (102,449)
Total | 28,751 | 33,696
Customer relationships/contracts [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 67,098 | 67,098
Accumulated Amortization | (49,580) | (48,150)
Total | 17,518 | 18,948
Trademarks and tradenames [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 11,361 | 11,361
Accumulated Amortization | (9,500) | (9,145)
Total | 1,861 | 2,216
Maintenance agreements and related relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 7,100 | 7,100
Accumulated Amortization | (3,816) | (3,513)
Total | $ 3,284 | $ 3,587

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