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Goodwill and Identified Intangible Assets - Summary of Goodwill and Identified Intangible Assets (Detail) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 29, 2018 | Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 85,655 | $ 85,857
Accumulated Amortization | (68,645) | (64,578)
Total future amortization expense | $ 17,010 | 21,279
Developed Core Technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful Life | 1 year 8 months 12 days |
Gross Carrying Amount | $ 31,707 | 31,707
Accumulated Amortization | (22,985) | (20,396)
Total future amortization expense | $ 8,722 | 11,311
Customer relationships/contracts |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful Life | 2 years 8 months 12 days |
Gross Carrying Amount | $ 44,690 | 44,819
Accumulated Amortization | (36,664) | (35,205)
Total future amortization expense | $ 8,026 | 9,614
Trademarks and Trade Names |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful Life | 1 year 8 months 12 days |
Gross Carrying Amount | $ 630 | 654
Accumulated Amortization | (368) | (300)
Total future amortization expense | 262 | 354
Maintenance Agreements and Related Relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 5,500 | 5,500
Accumulated Amortization | (5,500) | (5,500)
Total future amortization expense | 0 | 0
Order Backlog |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 3,128 | 3,177
Accumulated Amortization | (3,128) | (3,177)
Total future amortization expense | $ 0 | $ 0

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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=66006027&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=66006027&loc=d3e16323-109275 + Details
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