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Inventories (Tables)
6 Months Ended
Jun. 30, 2015
Inventory Disclosure [Abstract]  
Summary of Inventories
(Table only in thousands)    June 30,
2015
     December 31,
2014
 

Raw materials

   $ 18,872       $ 18,848   

Work in process

     2,342         2,644   

Finished goods

     2,361         2,492   

Obsolescence allowance

     (823      (568
  

 

 

    

 

 

 
   $ 22,752       $ 23,416