Schedule of Amortizable Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Apr. 03, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 498,264	$ 543,004
Accumulated Amortization	274,990	303,173
Net Carrying Amount	$ 223,274	$ 239,831
Weighted Average Useful Life, years	6 years 9 months 18 days	6 years 8 months 12 days
Developed technology
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 333,947	$ 379,778
Accumulated Amortization	186,118	220,306
Net Carrying Amount	$ 147,829	$ 159,472
Weighted Average Useful Life, years	6 years	6 years
Customer Relationships
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 110,658	$ 110,340
Accumulated Amortization	68,114	63,718
Net Carrying Amount	$ 42,544	$ 46,622
Weighted Average Useful Life, years	7 years 10 months 24 days	7 years 10 months 24 days
Trademarks and tradenames
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 53,169	$ 52,396
Accumulated Amortization	20,468	18,879
Net Carrying Amount	$ 32,701	$ 33,517
Weighted Average Useful Life, years	9 years 6 months	9 years 6 months
Non-compete agreements
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 320	$ 320
Accumulated Amortization	120	100
Net Carrying Amount	$ 200	$ 220
Weighted Average Useful Life, years	4 years	4 years
Customer backlog
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 170	$ 170
Accumulated Amortization	$ 170	$ 170
Weighted Average Useful Life, years	3 months 18 days	3 months 18 days