Restructuring and related activities gain from a previous sales lease back transaction.

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- Definition

The amount of cash paid during the reporting period for charges associated with the consolidation and relocation of operations, disposition or abandonment of operations or productive assets (that is, for reorganizing and restructuring charges and other related expenses). These charges may be incurred in connection with a business combination, change in strategic plan, a managerial response to declines in demand, increasing costs or other environmental factors.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

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- Definition

The number of positions eliminated during the period as a result of restructuring activities.

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- Definition

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 95-3

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.P.4(b))

-URI http://asc.fasb.org/extlink&oid=6394695&loc=d3e140904-122747

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- Definition

Amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for a specified type of restructuring cost, excluding adjustments for costs incurred during the period, costs settled during the period, and foreign currency translation adjustments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

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-Section S99

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-URI http://asc.fasb.org/extlink&oid=6394695&loc=d3e140904-122747

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 95-3

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section 40

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6394291&loc=d3e17658-110867

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 146

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Restructuring and Lease Charges, Net (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended			3 Months Ended				3 Months Ended				9 Months Ended			9 Months Ended		3 Months Ended				9 Months Ended		9 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Oct. 02, 2011	Oct. 03, 2010	Oct. 02, 2011	Oct. 03, 2010	Jan. 02, 2011	Jul. 03, 2011 Q2 2011 Restructuring Plan [Member] employees	Oct. 02, 2011 Q2 2011 Restructuring Plan [Member]	Oct. 02, 2011 Q2 2011 Restructuring Plan [Member] Severance [Member]	Oct. 02, 2011 Q2 2011 Restructuring Plan [Member] Closure Of Excess Facility Space [Member]	Jul. 03, 2011 Q2 2011 Restructuring Plan [Member] Human Health [Member]	Jul. 03, 2011 Q2 2011 Restructuring Plan [Member] Environmental Health [Member]	Jul. 03, 2011 Q4 2010 Restructuring Plan [Member]	Jan. 02, 2011 Q4 2010 Restructuring Plan [Member] employees	Oct. 02, 2011 Q4 2010 Restructuring Plan [Member]	Oct. 02, 2011 Q4 2010 Restructuring Plan [Member] Severance [Member]	Jan. 02, 2011 Q4 2010 Restructuring Plan [Member] Severance [Member]	Oct. 02, 2011 Q4 2010 Restructuring Plan [Member] Closure Of Excess Facility Space [Member]	Jan. 02, 2011 Q4 2010 Restructuring Plan [Member] Closure Of Excess Facility Space [Member]	Jan. 02, 2011 Q4 2010 Restructuring Plan [Member] Human Health [Member]	Jan. 02, 2011 Q4 2010 Restructuring Plan [Member] Environmental Health [Member]	Jul. 03, 2011 Q2 2010 Restructuring Plan [Member]	Jul. 04, 2010 Q2 2010 Restructuring Plan [Member] employees	Oct. 02, 2011 Q2 2010 Restructuring Plan [Member]	Jan. 02, 2011 Q2 2010 Restructuring Plan [Member]	Oct. 02, 2011 Q2 2010 Restructuring Plan [Member] Severance [Member]	Jan. 02, 2011 Q2 2010 Restructuring Plan [Member] Severance [Member]	Oct. 02, 2011 Q2 2010 Restructuring Plan [Member] Closure Of Excess Facility Space [Member]	Jan. 02, 2011 Q2 2010 Restructuring Plan [Member] Closure Of Excess Facility Space [Member]	Jul. 04, 2010 Q2 2010 Restructuring Plan [Member] Human Health [Member]	Jul. 04, 2010 Q2 2010 Restructuring Plan [Member] Environmental Health [Member]	Oct. 02, 2011 Previous restructuring and integration plans [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges before tax	$ 0	$ 0	$ 3,340,000	$ 9,833,000						$ 2,200,000	$ 3,400,000								$ 5,600,000	$ 7,600,000									$ 7,000,000	$ 3,900,000
Restructuring and related activities gain from a previous sales lease back transaction													2,800,000									100,000
Additional accrual for estimated sublease rental payments and (reversal) related to lower than expected cost associated with workforce reductions												200,000		168,000	0		168,000				(700,000)		(746,000)		(746,000)		0				(1,700,000)
Number of employees reduced						72							113									115
Remaining payments	13,079,000		13,079,000		22,611,000		2,573,000	2,573,000	0				11,922,000	4,617,000	753,000	7,852,000	3,864,000	4,070,000					1,880,000	4,252,000	147,000	2,193,000	1,733,000	2,059,000			4,000,000
Company paid related to plans																															$ 700,000