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Inventories
3 Months Ended
Mar. 31, 2012
Inventory, Net [Abstract]  
Inventory Disclosure [Text Block]
Inventories (in thousands):

 
March 31,
2012
 
December 31,
2011
Work in progress
$
25,650

  
$
24,260

Finished goods
11,195

  
13,018

Total inventories
$
36,845

  
$
37,278