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Related Parties Transactions And Balances (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Related Parties Transactions And Balances [Abstract]      
Sales to affiliated companies $ 98,884 [1] $ 53,490 [1] $ 33,124 [1]
Participation in expenses   3,923 3,955
Supplies from affiliated companies 10,908 [2] 44,840 [2] 57,339 [2]
Trade receivables and other receivables 24,121 [1] 21,696 [1]  
Trade payables and advances $ 18,475 [2] $ 17,767 [2]  
[1] The significant sales and balances include sales of helmet mounted cueing systems purchased from the Company by VSI.
[2] Includes electro-optics components and sensors, purchased by the Company from SCD, and electro-optics products, purchased by the Company from Opgal.