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Intangible Assets (Tables)
 3 Months Ended
Mar. 29, 2013
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Finite-Lived Intangible Assets by Major Class [Table Text Block]
 Amortizing intangible assets are comprised of the following (in thousands):
              
 AtMarch 29, 2013 Gross Carrying Amount  Accumulated Amortization  Foreign Currency Translation  Net Carrying Amount
 Technology and patents$ 95,576 $ (63,574) $ 1,665 $ 33,667
 Customer lists  68,257   (20,367)   778   48,668
 Other  4,434   (4,356)   804   882
 Total amortizing intangible assets$ 168,267 $ (88,297) $ 3,247 $ 83,217
              
 AtDecember 28, 2012           
 Technology and patents$ 95,576 $ (61,659) $ 1,932 $ 35,849
 Customer lists  68,257   (18,929)   1,270   50,598
 Other  4,434   (4,341)   805   898
 Total amortizing intangible assets$ 168,267 $ (84,929) $ 4,007 $ 87,345
Schedule of Finite-Lived Intangible Assets, Amortization Expense [Table Text Block]
 Aggregate intangible asset amortization expense is comprised of the following (in thousands):
        
  Three Months Ended 
  March 29, March 30, 
  2013 2012 
 Cost of sales$ 1,780 $ 1,895 
 Selling, general and administrative expenses  1,452   1,561 
 Research, development and engineering costs, net  136   136 
 Total intangible asset amortization expense$ 3,368 $ 3,592 
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
 Estimated future intangible asset amortization expense based on the current carrying value is as follows (in thousands):
      
   Estimated 
   Amortization 
   Expense 
 Remainder of2013$ 9,771 
 2014  13,364 
 2015  12,313 
 2016  10,018 
 2017  8,895 
 Thereafter  28,856 
 Total estimated amortization expense$ 83,217 
Schedule of Intangible Assets Goodwill [Table Text Block]
 Indefinite-lived intangible assets are comprised of the following (in thousands):
           
    Trademarks and Tradenames  IPR&D  Total
 AtDecember 28, 2012$ 20,288 $540 $ 20,828
 At March 29, 2013$ 20,288 $ 540 $ 20,828
           
 The change in goodwill is as follows (in thousands):
           
    Implantable Medical  Electrochem  Total
 AtDecember 28, 2012$ 307,201 $ 41,834 $ 349,035
 Goodwill disposed (Note 9)  (2,771)  0   (2,771)
 Foreign currency translation  (1,593)  0   (1,593)
 AtMarch 29, 2013$ 302,837 $ 41,834 $ 344,671