Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Sep. 26, 2014	Dec. 31, 2013
Schedule of Intangible Assets Disclosure [Line Items]
Amortizable intangible assets, gross carrying amount	$ 178,777	$ 138,732
Amortizable intangible assets, accumulated amortization	(98,261)	(86,466)
Amortizable intangible assets, net carrying amount	80,516	52,266
Gross carrying amount	191,804	151,759
Net carrying amount	93,543	65,293
Trade Names
Schedule of Intangible Assets Disclosure [Line Items]
Non-amortizable intangible assets	13,027	13,027
Patents and acquired technology
Schedule of Intangible Assets Disclosure [Line Items]
Amortizable intangible assets, gross carrying amount	79,279	68,500
Amortizable intangible assets, accumulated amortization	(60,726)	(56,327)
Amortizable intangible assets, net carrying amount	18,553	12,173
Customer Relationships
Schedule of Intangible Assets Disclosure [Line Items]
Amortizable intangible assets, gross carrying amount	79,112	55,585
Amortizable intangible assets, accumulated amortization	(29,716)	(24,340)
Amortizable intangible assets, net carrying amount	49,396	31,245
Customer Backlog
Schedule of Intangible Assets Disclosure [Line Items]
Amortizable intangible assets, gross carrying amount	3,078	1,269
Amortizable intangible assets, accumulated amortization	(2,391)	(1,269)
Amortizable intangible assets, net carrying amount	687
Non-Compete Covenant
Schedule of Intangible Assets Disclosure [Line Items]
Amortizable intangible assets, gross carrying amount	1,830
Amortizable intangible assets, accumulated amortization	(250)
Amortizable intangible assets, net carrying amount	1,580
Trademarks and Trade Names
Schedule of Intangible Assets Disclosure [Line Items]
Amortizable intangible assets, gross carrying amount	15,478	13,378
Amortizable intangible assets, accumulated amortization	(5,178)	(4,530)
Amortizable intangible assets, net carrying amount	$ 10,300	$ 8,848