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Inventories
3 Months Ended
Mar. 31, 2012
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]
Inventories
Inventories consist of the following components:
 
 
March 31,
2012
 
December 31,
2011
 
 
(dollars in thousands)
Finished goods
 
$
132,610

 
$
119,020

Work in process
 
24,350

 
21,730

Raw materials
 
41,540

 
37,280

Total inventories
 
$
198,500

 
$
178,030