Goodwill and Intangible Assets-Intangibles (Details 2) (USD $) In Thousands, unless otherwise specified	Jul. 01, 2012	Jan. 01, 2012
Intangible Assets
Total Intangible Assets, gross	$ 474,312	$ 438,340
Accumulated Amortization	(190,131)	(150,649)
Total Intangible Assets, net	284,181	287,691
Developed product technology [Member]
Intangible Assets
Gross Carrying Amount, Finite-lived Intangible Asset	200,010	172,800
Accumulated Amortization	(48,474)	(30,014)
Intangible assets subject to amortization	151,536	142,786
Core Technology [Member]
Intangible Assets
Gross Carrying Amount, Finite-lived Intangible Asset	79,800	79,800
Accumulated Amortization	(79,800)	(75,349)
Intangible assets subject to amortization	0	4,451
Customer relationships [Member]
Intangible Assets
Gross Carrying Amount, Finite-lived Intangible Asset	13,050	12,200
Accumulated Amortization	(6,710)	(3,643)
Intangible assets subject to amortization	6,340	8,557
Trademarks [Member]
Intangible Assets
Gross Carrying Amount, Finite-lived Intangible Asset	5,700	5,300
Accumulated Amortization	(1,239)	(633)
Intangible assets subject to amortization	4,461	4,667
Covenants not to compete [Member]
Intangible Assets
Gross Carrying Amount, Finite-lived Intangible Asset	3,100	700
Accumulated Amortization	(843)	(209)
Intangible assets subject to amortization	2,257	491
Technology licenses and patents [Member]
Intangible Assets
Gross Carrying Amount, Finite-lived Intangible Asset	133,317	131,340
Accumulated Amortization	(53,065)	(40,801)
Intangible assets subject to amortization	80,252	90,539
Acquisition-related Intangible Assets [Member]
Intangible Assets
Gross Carrying Amount, Finite-lived Intangible Asset	301,660	270,800
Accumulated Amortization	(137,066)	(109,848)
Intangible assets subject to amortization	164,594	160,952
Intangible assets subject to amortization [Member]
Intangible Assets
Gross Carrying Amount, Finite-lived Intangible Asset	434,977	402,140
Accumulated Amortization	(190,131)	(150,649)
Intangible assets subject to amortization	244,846	251,491
Acquired in-process research and development [Member]
Intangible Assets
Gross Carrying Amount, Indefinite-lived Intangible Asset	39,335	36,200
Accumulated Amortization	0	0
Net Carrying Amount, Indefinite-lived Intangible Assets	$ 39,335	$ 36,200