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Inventories
12 Months Ended
Dec. 31, 2011
Inventory, Net [Abstract]  
Inventory Disclosure [Text Block]
Inventories (in thousands):
  
 
December 31,
2011
 
January 1,
2011
Work in progress
$
24,260

 
$
25,516

Finished goods
13,018

 
11,817

 
$
37,278

 
$
37,333