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Inventories
12 Months Ended
Dec. 31, 2011
Inventories [Abstract]  
Inventory Disclosure [Text Block]
Inventories
Inventories consist of the following components:
 
 
December 31,
2011
 
December 31,
2010
 
 
(dollars in thousands)
Finished goods
 
$
119,020

 
$
103,560

Work in process
 
21,730

 
19,010

Raw materials
 
37,280

 
33,410

Total inventories
 
$
178,030

 
$
155,980