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Business Combinations (Fair Values of the Business Combinations and Allocations for the Acquisitions Completed) (Details) (Human Health [Member], Caliper Life Sciences [Member], USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 30, 2012
Nov. 30, 2012
Business Acquisition [Line Items]    
Business Acquisition, Cost of Acquired Entity, Cash Paid   $ 38,000
Business Acquisition, Cost of Acquired Entity, Liabilities Incurred, Contingent Consideration at Fair Value   1,900
Working capital adjustments   (2,729)
Less: cash acquired   (175)
Total   36,996
Current assets   2,389
Property, plant and equipment   2,906
Goodwill   19,682
Deferred taxes   (2,656)
Liabilities assumed   (3,725)
Total   36,996
Core Technology [Member]
   
Business Acquisition [Line Items]    
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life 8 years  
Identifiable intangible assets   17,700
Trade Names [Member]
   
Business Acquisition [Line Items]    
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life 8 years  
Identifiable intangible assets   400
In-process Research and Development [Member]
   
Business Acquisition [Line Items]    
Identifiable intangible assets   $ 300