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Inventories
9 Months Ended
Sep. 30, 2011
Inventories [Abstract] 
Inventories

3. Inventories

Inventories consist of the following:

 

     September 30,
2011
     December 31,
2010
 

Finished products

   $ 241,703       $ 219,568   

Feedstock, additives and chemicals

     180,270         189,007   

Materials and supplies

     44,275         41,453   
  

 

 

    

 

 

 

Inventories

   $ 466,248       $ 450,028