Goodwill and Identified Intangible Assets - Summary of Goodwill and Identified Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified					9 Months Ended			9 Months Ended			9 Months Ended			9 Months Ended
Sep. 26, 2014	Dec. 31, 2013	Sep. 26, 2014 Developed core technology [Member]	Dec. 31, 2013 Developed core technology [Member]	Sep. 26, 2014 Developed core technology [Member] Minimum [Member]	Sep. 26, 2014 Developed core technology [Member] Maximum [Member]	Sep. 26, 2014 Customer relationships/contracts [Member]	Dec. 31, 2013 Customer relationships/contracts [Member]	Sep. 26, 2014 Customer relationships/contracts [Member] Minimum [Member]	Sep. 26, 2014 Customer relationships/contracts [Member] Maximum [Member]	Sep. 26, 2014 Trademarks and tradenames [Member]	Dec. 31, 2013 Trademarks and tradenames [Member]	Sep. 26, 2014 Trademarks and tradenames [Member] Minimum [Member]	Sep. 26, 2014 Trademarks and tradenames [Member] Maximum [Member]	Sep. 26, 2014 Maintenance agreements and related relationships [Member]	Dec. 31, 2013 Maintenance agreements and related relationships [Member]	Sep. 26, 2014 Maintenance agreements and related relationships [Member] Minimum [Member]	Sep. 26, 2014 Maintenance agreements and related relationships [Member] Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Life					4 years	6 years			5 years	6 years			4 years	5 years			6 years	7 years
Gross Carrying Amount	$ 221,704	$ 221,704	$ 136,145	$ 136,145			$ 67,098	$ 67,098			$ 11,361	$ 11,361			$ 7,100	$ 7,100
Accumulated Amortization	(208,964)	(190,585)	(134,731)	(121,681)			(57,568)	(53,772)			(11,361)	(10,565)			(5,304)	(4,567)
Total future amortization expense	$ 12,740	$ 31,119	$ 1,414	$ 14,464			$ 9,530	$ 13,326			$ 0	$ 796			$ 1,796	$ 2,533

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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

Name:	us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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

Name:	us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration