Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 29, 2013	Dec. 31, 2012
Schedule of Intangible Assets Disclosure [Line Items]
Amortizable intangible assets, gross carrying amount	$ 139,269	$ 103,047
Amortizable intangible assets, accumulated amortization	(78,806)	(76,054)
Amortizable intangible assets, net carrying amount	60,463	26,993
Gross carrying amount	152,296	116,074
Accumulated amortization	(78,806)	(76,054)
Net carrying amount	73,490	40,020
Patents and acquired technology
Schedule of Intangible Assets Disclosure [Line Items]
Amortizable intangible assets, gross carrying amount	67,857	61,667
Amortizable intangible assets, accumulated amortization	(51,656)	(50,904)
Amortizable intangible assets, net carrying amount	16,201	10,763
Customer Relationships
Schedule of Intangible Assets Disclosure [Line Items]
Amortizable intangible assets, gross carrying amount	54,582	33,245
Amortizable intangible assets, accumulated amortization	(20,005)	(18,981)
Amortizable intangible assets, net carrying amount	34,577	14,264
Customer Backlog
Schedule of Intangible Assets Disclosure [Line Items]
Amortizable intangible assets, gross carrying amount	3,598	2,355
Amortizable intangible assets, accumulated amortization	(3,239)	(2,355)
Amortizable intangible assets, net carrying amount	359
Trademarks, trade names and other
Schedule of Intangible Assets Disclosure [Line Items]
Amortizable intangible assets, gross carrying amount	13,232	5,780
Amortizable intangible assets, accumulated amortization	(3,906)	(3,814)
Amortizable intangible assets, net carrying amount	9,326	1,966
Trade Names
Schedule of Intangible Assets Disclosure [Line Items]
Non-amortizable intangible assets, gross carrying amount	13,027	13,027
Non-amortizable intangible assets, accumulated amortization
Non-amortizable intangible assets, net carrying amount	$ 13,027	$ 13,027