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Inventories (Tables)
9 Months Ended
Sep. 30, 2014
Inventory Disclosure [Abstract]  
Schedule Of Inventories
 
As of December 31, 2013
 
As of September 30, 2014
 
(Dollars in thousands)
Inventories:
 
 
 
Raw materials and supplies
$
184,420

 
$
150,340

Work in process
245,160

 
191,340

Finished goods
78,446

 
97,063

 
508,026

 
438,743

Reserves
(17,612
)
 
(20,266
)
         Total
$
490,414

 
$
418,477