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Inventories
12 Months Ended
Dec. 31, 2012
Inventory Disclosure [Abstract]  
Inventories
Inventories
 
Inventories consist of the following at December 31,:
 
 
2011
 
2012
 
 
 
 
Raw materials
$
52,351

 
$
45,115

Work in process
15,499

 
14,229

Finished goods
100,588

 
96,884

 
$
168,438

 
$
156,228