Goodwill and Intangible Assets (Details 1) (USD $) In Thousands	9 Months Ended
	Oct. 02, 2011	Jan. 02, 2011
Intangible Assets
Gross Carrying Amount	$ 438,340	$ 122,540
Accumulated Amortization	(129,431)	(85,136)
Net Carrying Amount	308,909	37,404
Developed product technology [Member]
Intangible Assets
Gross Carrying Amount	172,800	11,400
Accumulated Amortization	(21,278)	(8,075)
Net Carrying Amount	151,522	3,325
Trademarks [Member]
Intangible Assets
Gross Carrying Amount	5,300
Accumulated Amortization	(368)
Net Carrying Amount	4,932
Customer relationships [Member]
Intangible Assets
Gross Carrying Amount	12,200
Accumulated Amortization	(2,118)
Net Carrying Amount	10,082
Covenants not to compete [Member]
Intangible Assets
Gross Carrying Amount	700
Accumulated Amortization	(122)
Net Carrying Amount	578
Technology licenses and patents [Member]
Intangible Assets
Gross Carrying Amount	131,340	31,340
Accumulated Amortization	(34,647)	(19,515)
Net Carrying Amount	96,693	11,825
Estimated Amortization Expense of Intangible Assets
2011	6,155
2012	23,971
2013	22,670
2014	20,564
2015	20,000
2016	3,333
Total intangible assets subject to amortization	96,693
Acquisition-related Intangible Assets [Member]
Intangible Assets
Gross Carrying Amount	270,800	91,200
Accumulated Amortization	(94,784)	(65,621)
Net Carrying Amount	176,016	25,579
Estimated Amortization Expense of Intangible Assets
2011	15,063
2012	44,906
2013	35,938
2014	33,340
2015	33,340
2016	13,429
Total intangible assets subject to amortization	176,016
Intangible assets subject to amortization [Member]
Intangible Assets
Gross Carrying Amount	402,140
Accumulated Amortization	(129,431)
Net Carrying Amount	272,709
Acquired in-process research and development [Member]
Intangible Assets
Gross Carrying Amount	36,200
Accumulated Amortization	0
Net Carrying Amount	36,200
Core Technology [Member]
Intangible Assets
Gross Carrying Amount	79,800	79,800
Accumulated Amortization	(70,898)	(57,546)
Net Carrying Amount	$ 8,902	$ 22,254