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Inventories
9 Months Ended
Sep. 30, 2012
Inventory, Net [Abstract]  
Inventories
Inventories
Inventories are stated at the lower of cost or estimated realizable value. We determine the cost of inventory using the weighted-average cost method.
The components of inventory are as follows:
 
September 30,
 
December 31,
 
2012
 
2011
Raw materials
$
8,879

 
$
9,677

Work-in-process
30,367

 
37,000

Finished goods
50,803

 
34,709

 
$
90,049

 
$
81,386