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Inventories
12 Months Ended
Dec. 29, 2012
Inventory, Net [Abstract]  
Inventories
Inventories (in thousands):

 
December 29,
2012
 
December 31,
2011
Work in progress
$
27,915

  
$
24,260

Finished goods
16,279

  
13,018

Total inventories
$
44,194

  
$
37,278