Schedule of Amortizable Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 543,236	$ 537,366
Accumulated Amortization	290,945	218,499
Net Carrying Amount	252,291	318,867
Weighted Average Useful Life, years	7 years	7 years
Developed technology
Finite-Lived Intangible Assets
Gross Carrying Amount	362,055	357,555
Accumulated Amortization	193,756	143,126
Net Carrying Amount	168,299	214,429
Weighted Average Useful Life, years	6 years 3 months 18 days	6 years 3 months 18 days
Customer Relationships
Finite-Lived Intangible Assets
Gross Carrying Amount	146,341	144,971
Accumulated Amortization	81,742	63,464
Net Carrying Amount	64,599	81,507
Weighted Average Useful Life, years	8 years	8 years
Tradenames and trademarks
Finite-Lived Intangible Assets
Gross Carrying Amount	33,840	33,840
Accumulated Amortization	14,447	10,909
Net Carrying Amount	19,393	22,931
Weighted Average Useful Life, years	9 years	9 years
Customer backlog
Finite-Lived Intangible Assets
Gross Carrying Amount	1,000	1,000
Accumulated Amortization	$ 1,000	$ 1,000
Weighted Average Useful Life, years	4 months 24 days	4 months 24 days