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Inventories (Tables)
3 Months Ended
Mar. 29, 2014
Inventory Items, Net Of Reserves Alternative [Abstract]  
Inventory, Net of Reserves

Inventories are classified as follows (in thousands):

   March 29, 2014 December 31, 2013
Raw materials $88,500 $76,930
Work in progress  21,261  19,656
Finished goods  156,868  146,214
 Total inventories $266,629 $242,800