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PROPERTY, PLANT AND EQUIPMENT (Tables)
12 Months Ended
Dec. 31, 2012
PROPERTY, PLANT AND EQUIPMENT [Abstract]  
Property, plant and equipment, net
Property, plant and equipment, net, consists of the following classes at December 31:
                                                                                                           
(thousands) 2012   2011  
Land and improvements
$
      1,669
  $
1,267
 
Buildings and improvements
 
26,692
   
       20,078
 
Machinery and equipment
 
63,456
   
       53,710
 
Transportation equipment
 
937
   
         760
 
Leasehold improvements
 
1,716
   
         1,684
 
Property, plant & equipment, at cost
 
94,470
   
       77,499
 
Less: accumulated depreciation and amortization
 
(57,401)
   
         (54,521)
 
Property, plant & equipment, net
$
    37,069
  $
22,978