Schedule of Amortizable Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 28, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 513,972	$ 515,464
Accumulated Amortization	316,495	263,173
Net Carrying Amount	197,477	252,291
Weighted Average Useful Life, years	6 years 10 months 24 days	6 years 10 months 24 days
Developed technology
Finite-Lived Intangible Assets
Gross Carrying Amount	342,933	342,933
Accumulated Amortization	212,949	174,563
Net Carrying Amount	129,984	168,370
Weighted Average Useful Life, years	6 years 2 months 12 days	6 years 2 months 12 days
Customer Relationships
Finite-Lived Intangible Assets
Gross Carrying Amount	141,005	141,497
Accumulated Amortization	90,244	76,963
Net Carrying Amount	50,761	64,534
Weighted Average Useful Life, years	8 years	8 years
Trade names and trademarks
Finite-Lived Intangible Assets
Gross Carrying Amount	30,034	30,034
Accumulated Amortization	13,302	10,647
Net Carrying Amount	16,732	19,387
Weighted Average Useful Life, years	9 years 1 month 6 days	9 years 1 month 6 days
Customer backlog
Finite-Lived Intangible Assets
Gross Carrying Amount		1,000
Accumulated Amortization		$ 1,000
Weighted Average Useful Life, years		4 months 24 days