Goodwill and Identified Intangible Assets - Summary of Goodwill and Identified Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 28, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 221,704	$ 221,704
Accumulated Amortization	(177,062)	(163,257)
Total	44,642	58,447
Developed core technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	136,145	136,145
Accumulated Amortization	(112,157)	(102,449)
Total	23,988	33,696
Customer relationships/contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	67,098	67,098
Accumulated Amortization	(50,984)	(48,150)
Total	16,114	18,948
Trademarks and tradenames [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	11,361	11,361
Accumulated Amortization	(9,855)	(9,145)
Total	1,506	2,216
Maintenance agreements and related relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	7,100	7,100
Accumulated Amortization	(4,066)	(3,513)
Total	$ 3,034	$ 3,587