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Major Customer And Geographic Information (Tables)
12 Months Ended
Dec. 31, 2012
Major Customer And Geographic Information [Abstract]  
Schedule Of Revenues By Geographic Areas
Schedule Of Revenues By Areas Of Operations
Schedule Of Major Customer Data
             
  Year ended December 31,    
  2012   2011   2010   
Israeli Ministry of Defense 15 % 23 % 23 %
U.S. Government 8 % 8 % 7 %
Schedule Of Long Lived Assets By Geographic Areas
             
    Year ended December 31,
    2012   2011   2010
Israel $ 863,945 $ 875,935 $ 985,953
U.S   208,309   208,640   225,217
Other   144,594   196,105   89,345
  $ 1,216,847 $  1,280,680 $  1,300,515