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INVENTORIES (Tables)
 9 Months Ended
Sep. 30, 2013
INVENTORIES [Abstract]  
Inventories
The components of inventories are as follows (in thousands):
                 
   
SEPTEMBER 30,
   
DECEMBER 31,
 
   
2013
   
2012
 
Finished goods
 
$
22,153
   
$
24,657
 
Work in process
   
5,074
     
3,743
 
Raw materials and supplies
   
29,495
     
24,095
 
Inventories, net 
 
$
56,722
   
$
52,495