Intangible Assets by Major Asset Class (Detail) (USD $) In Thousands, unless otherwise specified							3 Months Ended				3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Trade name, trademark and trade dress and other	Dec. 31, 2012 Trade name, trademark and trade dress and other	Mar. 31, 2013 Patents	Dec. 31, 2012 Patents	Mar. 31, 2013 Patents Minimum	Mar. 31, 2013 Patents Maximum	Mar. 31, 2013 Developed technology and other	Dec. 31, 2012 Developed technology and other	Mar. 31, 2013 Developed technology and other Minimum	Mar. 31, 2013 Developed technology and other Maximum
Intangible Assets By Major Class [Line Items]
Useful Life (years)							2 years	16 years			1 year	9 years
Gross	$ 128,132	$ 128,132	$ 88,590	$ 88,590	$ 31,581	$ 31,581			$ 7,961	$ 7,961
Accumulated Amortization	39,168	38,943			31,241	31,022			7,927	7,921
Intangible assets, net	$ 88,964	$ 89,189	$ 88,590	$ 88,590	$ 340	$ 559			$ 34	$ 40