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Inventories
9 Months Ended
Sep. 28, 2013
Inventory, Net [Abstract]  
Inventories
Inventories (in thousands):

 
September 28,
2013
 
December 29,
2012
Work in progress
$
26,081

  
$
27,915

Finished goods
16,214

  
16,279

Total inventories
$
42,295

  
$
44,194