Restructuring and Lease Charges, Net (Schedule of Restructuring Plan Activity) (Details) (USD $) In Thousands, unless otherwise specified			6 Months Ended							6 Months Ended
	Jul. 01, 2012	Jan. 01, 2012	Jul. 01, 2012 Q4 2011 Restructuring Plan [Member]	Jul. 01, 2012 Q4 2011 Restructuring Plan [Member] Closure Of Excess Facility Space [Member]	Jul. 01, 2012 Q4 2011 Restructuring Plan [Member] Severance [Member]	Jul. 01, 2012 Q2 2011 Restructuring Plan [Member]	Jul. 01, 2012 Q2 2011 Restructuring Plan [Member] Closure Of Excess Facility Space [Member]	Jul. 01, 2012 Q2 2011 Restructuring Plan [Member] Severance [Member]	Jul. 01, 2012 Previous restructuring and integration plans [Member]	Jul. 01, 2012 Previous restructuring and integration plans [Member] Closure Of Excess Facility Space [Member]	Jul. 01, 2012 Previous restructuring and integration plans [Member] Severance [Member]	Jul. 01, 2012 Q2 2012 Restructuring Plan [Member] Severance [Member]	Jul. 01, 2012 Q1 2012 Restructuring Plan [Member]	Jul. 01, 2012 Q1 2012 Restructuring Plan [Member] Closure Of Excess Facility Space [Member]	Jul. 01, 2012 Q1 2012 Restructuring Plan [Member] Severance [Member]
Restructuring Reserve [Roll Forward]
Balance at beginning of period	$ 15,189	$ 13,958	$ 5,044	$ 370	$ 4,674	$ 1,283	$ 0	$ 1,283	$ 12,700
Restructuring Reserve, Period Expense												4,218	6,204	79	6,125
Additional accrual for estimated sublease rental payments and (reversal) related to lower than expected cost associated with workforce reductions			(135)	(135)	0					300	400
Amounts paid and foreign currency translation			(3,293)	(60)	(3,233)	(454)	0	(454)				(714)	(3,315)	(79)	(3,236)
Balance at end of period	$ 15,189	$ 13,958	$ 1,616	$ 175	$ 1,441	$ 829	$ 0	$ 829	$ 12,700			$ 3,504	$ 2,889	$ 0	$ 2,889