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Inventory (Tables)
3 Months Ended
Mar. 29, 2013
Inventory [Abstract]  
Inventory
Inventory as of March 29, 2013 and December 28, 2012 consisted of the following (in thousands):

   
March 29, 2013
  
December 28, 2012
 
        
Finished goods
 $16,213  $18,563 
Work in progress
  3,353   4,276 
Raw materials and supplies
  10,584   8,595 
   $30,150  $31,434