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Inventories
6 Months Ended
Jun. 30, 2011
Inventories  
Inventories
(10) Inventories

Inventories are comprised of the following:

 

     At December 31,
2010
    At June 30,
2011
 
     (Dollars in thousands)  

Inventories:

    

Raw materials and supplies

   $ 118,691      $ 173,166   

Work in process

     160,368        168,685   

Finished goods

     64,075        63,901   
                
     343,134        405,752   

Reserves

     (2,716     (3,710
                
   $ 340,418      $ 402,042   
                

We recognize abnormal amounts of idle facility expense, freight, handling costs, and wasted materials (spoilage) as current period charges. We are required to allocate fixed production overheads to the costs of conversion based on normal capacity of the production facilities. The unabsorbed costs were attributable to adjustments of fixed production overheads to the costs of conversion based on normal capacity versus actual levels, due to production levels at certain facilities being below normal capacity for the quarters ended June 30, 2010 and 2011. Costs in excess of normal absorption at December 31, 2010 and June 30, 2011 were $1.4 million and $0.5 million, respectively.