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Goodwill and Identified Intangible Assets - Summary of Goodwill and Identified Intangible Assets (Detail) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Oct. 02, 2015 | Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 210,343 | $ 210,343
Accumulated Amortization | (204,715) | (199,744)
Total future amortization expense | 5,628 | 10,599
Developed core technology [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 136,145 | 136,145
Accumulated Amortization | (136,059) | (135,426)
Total future amortization expense | $ 86 | 719
Developed core technology [Member] | Minimum [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful Life | 4 years |
Developed core technology [Member] | Maximum [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful Life | 6 years |
Customer relationships/contracts [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 67,098 | 67,098
Accumulated Amortization | (62,434) | (58,784)
Total future amortization expense | $ 4,664 | 8,314
Customer relationships/contracts [Member] | Minimum [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful Life | 5 years |
Customer relationships/contracts [Member] | Maximum [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful Life | 6 years |
Maintenance agreements and related relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 7,100 | 7,100
Accumulated Amortization | (6,222) | (5,534)
Total future amortization expense | $ 878 | $ 1,566
Maintenance agreements and related relationships [Member] | Minimum [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful Life | 6 years |
Maintenance agreements and related relationships [Member] | Maximum [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful Life | 7 years |

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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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