Goodwill and Identified Intangibles (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2012
Estimated future amortization expense of purchased intangible assets
2012 (remaining 9 months)	$ 21,669
2013	27,328
2014	20,520
2015	6,497
2016	4,097
Total	80,111
Cost of revenue [Member]
Estimated future amortization expense of purchased intangible assets
2012 (remaining 9 months)	15,144
2013	19,232
2014	13,745
2015	714
Total	48,835
Operating expenses [Member]
Estimated future amortization expense of purchased intangible assets
2012 (remaining 9 months)	6,525
2013	8,096
2014	6,775
2015	5,783
2016	4,097
Total	$ 31,276