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Inventories (Tables)
 6 Months Ended
Jun. 30, 2012
Inventory, Net [Abstract]  
Inventories
Inventories consist of the following:
 
 
June 30,
 
December 31,
 
 
2012
 
2011
Raw materials and supplies
 
$
144,902

 
$
236,336

Work-in-process
 
194,832

 
227,139

Finished goods
 
138,461

 
151,543

 
 
$
478,195

 
$
615,018