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Inventories
3 Months Ended
Mar. 31, 2012
Inventories [Abstract]  
Inventories

3. Inventories

Inventories consist of the following:

 

     March 31,
2012
     December 31,
2011
 

Finished products

   $   199,942       $ 234,830   

Feedstock, additives and chemicals

     171,756         207,899   

Materials and supplies

     50,707         48,048   
  

 

 

    

 

 

 

Inventories

   $ 422,405       $ 490,777