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INVENTORIES
3 Months Ended
Mar. 31, 2015
INVENTORIES [Abstract]  
INVENTORIES

4. INVENTORIES

 

Inventories consist of the following (in thousands):

 

   March 31,   December 31,
  2015 2014
Raw materials $14,908  $12,956 
Work in process  1,918   1,779 
Finished goods  236   240 
  $17,062  $14,975