Restructuring and Lease Charges, Net (Narrative) (Details) (USD $)
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3 Months Ended | 9 Months Ended | 3 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | |||||||||||||||||||||||
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Sep. 30, 2012
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Oct. 02, 2011
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Sep. 30, 2012
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Oct. 02, 2011
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Jan. 01, 2012
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Sep. 30, 2012
Q3 2012 Restructuring Plan [Member]
employees
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Sep. 30, 2012
Q3 2012 Restructuring Plan [Member]
Human Health [Member]
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Sep. 30, 2012
Q3 2012 Restructuring Plan [Member]
Environmental Health [Member]
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Sep. 30, 2012
Q3 2012 Restructuring Plan [Member]
Severance [Member]
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Jul. 01, 2012
Q2 2012 Restructuring Plan [Member]
employees
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Sep. 30, 2012
Q2 2012 Restructuring Plan [Member]
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Sep. 30, 2012
Q2 2012 Restructuring Plan [Member]
Human Health [Member]
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Sep. 30, 2012
Q2 2012 Restructuring Plan [Member]
Environmental Health [Member]
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Sep. 30, 2012
Q2 2012 Restructuring Plan [Member]
Severance [Member]
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Apr. 01, 2012
Q1 2012 Restructuring Plan [Member]
employees
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Sep. 30, 2012
Q1 2012 Restructuring Plan [Member]
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Sep. 30, 2012
Q1 2012 Restructuring Plan [Member]
Human Health [Member]
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Sep. 30, 2012
Q1 2012 Restructuring Plan [Member]
Environmental Health [Member]
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Sep. 30, 2012
Q1 2012 Restructuring Plan [Member]
Severance [Member]
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Sep. 30, 2012
Q1 2012 Restructuring Plan [Member]
Closure Of Excess Facility Space [Member]
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Jan. 01, 2012
Q4 2011 Restructuring Plan [Member]
employees
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Sep. 30, 2012
Q4 2011 Restructuring Plan [Member]
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Jan. 01, 2012
Q4 2011 Restructuring Plan [Member]
Human Health [Member]
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Jan. 01, 2012
Q4 2011 Restructuring Plan [Member]
Environmental Health [Member]
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Sep. 30, 2012
Q4 2011 Restructuring Plan [Member]
Severance [Member]
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Jan. 01, 2012
Q4 2011 Restructuring Plan [Member]
Severance [Member]
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Sep. 30, 2012
Q4 2011 Restructuring Plan [Member]
Closure Of Excess Facility Space [Member]
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Jan. 01, 2012
Q4 2011 Restructuring Plan [Member]
Closure Of Excess Facility Space [Member]
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Jul. 03, 2011
Q2 2011 Restructuring Plan [Member]
employees
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Jul. 03, 2011
Q2 2011 Restructuring Plan [Member]
Human Health [Member]
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Jul. 03, 2011
Q2 2011 Restructuring Plan [Member]
Environmental Health [Member]
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Sep. 30, 2012
Q2 2011 Restructuring Plan [Member]
Severance [Member]
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Jan. 01, 2012
Q2 2011 Restructuring Plan [Member]
Severance [Member]
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Sep. 30, 2012
Previous restructuring and integration plans [Member]
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Sep. 30, 2012
Previous restructuring and integration plans [Member]
Severance [Member]
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Sep. 30, 2012
Previous restructuring and integration plans [Member]
Closure Of Excess Facility Space [Member]
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Sep. 30, 2012
Contract Termination [Member]
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Restructuring Cost and Reserve [Line Items] | |||||||||||||||||||||||||||||||||||||
Restructuring charges before tax | $ 9,672,000 | $ 0 | $ 21,034,000 | $ 3,340,000 | $ 3,700,000 | $ 3,700,000 | $ 5,600,000 | $ 200,000 | $ 5,400,000 | $ 1,000,000 | $ 2,300,000 | $ 4,600,000 | $ 2,200,000 | $ 3,400,000 | |||||||||||||||||||||||
Restructuring and Related Cost, Remaining Cost | 4,100,000 | 100,000 | |||||||||||||||||||||||||||||||||||
Additional accrual for estimated sublease rental payments and (reversal) related to lower than expected cost associated with workforce reductions | (135,000) | 0 | (135,000) | 400,000 | 300,000 | 800,000 | |||||||||||||||||||||||||||||||
Number of employees reduced | 66 | 215 | 121 | 114 | 72 | ||||||||||||||||||||||||||||||||
Remaining payments | 21,161,000 | 21,161,000 | 13,958,000 | 7,416,000 | 3,646,000 | 2,010,000 | 2,010,000 | 0 | 5,044,000 | 742,000 | 742,000 | 4,674,000 | 0 | 370,000 | 779,000 | 1,283,000 | 11,900,000 | 1,700,000 | |||||||||||||||||||
Restructuring Reserve, Settled with Cash | 1,100,000 | ||||||||||||||||||||||||||||||||||||
Payments for Restructuring | $ 3,300,000 |