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Other Accounts Receivable And Prepaid Expenses (Tables)
12 Months Ended
Dec. 31, 2012
Other Accounts Payable And Accrued Expenses [Abstract]  
Schedule of other accounts receivable and prepaid expenses
   
December 31,
 
   
2011
   
2012
 
             
Government authorities
  $ 13,789     $ 14,150  
Advances to suppliers
    7,126       3,140  
Prepaid expenses
    12,358       16,636  
Other
    4,008       4,817  
    $ 37,281     $ 38,743