Goodwill and Other Intangible Assets - Amortized Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 106,240		$ 106,240		$ 106,240
Accumulated Amortization	(42,611)		(42,611)		(37,272)
Net Amount	63,629		63,629		68,968
Amortization expense	2,667	1,863	5,339	3,726
Current Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	23,778		23,778		23,778
Accumulated Amortization	(15,373)		(15,373)		(14,060)
Net Amount	8,405		8,405		9,718
Patents and Patent Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	29,569		29,569		29,569
Accumulated Amortization	(19,518)		(19,518)		(17,919)
Net Amount	10,051		10,051		11,650
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	52,893		52,893		52,893
Accumulated Amortization	(7,720)		(7,720)		(5,293)
Net Amount	$ 45,173		$ 45,173		$ 47,600