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Inventories
6 Months Ended
Jun. 30, 2011
Inventories [Abstract]  
INVENTORIES
NOTE 8. INVENTORIES
Our inventories are valued at the lower of cost or market and computed on a first-in, first-out (FIFO) basis. Components of inventories are as follows (in thousands):
                 
    June 30,     December 31,  
    2011     2010  
 
               
Parts and raw materials
  $ 64,100     $ 53,755  
Work in process
    9,344       5,594  
Finished goods
    26,948       18,244  
 
           
 
               
 
  $ 100,392     $ 77,593