Schedule of Amortizable Intangible Assets (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jul. 05, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 640,645	$ 523,052
Accumulated Amortization	361,519	332,452
Net Carrying Amount	$ 279,126	$ 190,600
Weighted Average Useful Life, years	6 years 7 months 6 days	6 years 9 months 18 days
Developed technology
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 432,656	$ 345,513
Accumulated Amortization	244,514	224,059
Net Carrying Amount	$ 188,142	$ 121,454
Weighted Average Useful Life, years	5 years 10 months 24 days	6 years 2 months 12 days
Customer Relationships
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 155,831	$ 146,635
Accumulated Amortization	100,500	93,998
Net Carrying Amount	$ 55,331	$ 52,637
Weighted Average Useful Life, years	7 years 6 months	7 years 8 months 12 days
Trademarks and tradenames
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 51,668	$ 30,414
Accumulated Amortization	16,275	14,205
Net Carrying Amount	$ 35,393	$ 16,209
Weighted Average Useful Life, years	5 years 3 months 18 days	9 years
Non-compete agreement
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 320	$ 320
Accumulated Amortization	60	20
Net Carrying Amount	$ 260	$ 300
Weighted Average Useful Life, years	4 years	4 years
Customer order 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