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Inventories (Tables)
6 Months Ended
Jun. 30, 2012
Inventories [Abstract]  
Schedule of inventories
                 
    June 30,
2012
    December 31,
2011
 
    (In thousands)  
     

Raw materials and subassemblies

  $ 223     $ 167  

Finished goods

    180       256  
   

 

 

   

 

 

 
     

Inventories

  $ 403     $ 423