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Property, Plant and Equipment
12 Months Ended
Dec. 31, 2012
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
  4. Property, Plant and Equipment

 

Property, plant and equipment consist of the following:

 

December 31,   2012     2011  
             
Land and improvements   $ 1,308     $ 1,266  
Buildings and improvements     29,539       27,961  
Machinery and equipment     133,635       111,558  
Dies and tools     31,231       28,357  
    $ 195,713     $ 169,142