Goodwill and Intangible Assets (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 01, 2012
Acquisition-related Intangible Assets [Member]
Estimated Amortization Expense of Intangible Assets
2012 (remaining 9 months)	$ 33,986
2013	41,463
2014	37,630
2015	37,465
2016	13,915
Total intangible assets subject to amortization	164,459
Technology licenses and patents [Member]
Estimated Amortization Expense of Intangible Assets
2012 (remaining 9 months)	18,478
2013	23,337
2014	21,231
2015	20,056
2016	3,333
Total intangible assets subject to amortization	$ 86,435