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Property And Equipment, Net (Tables)
12 Months Ended
Dec. 31, 2012
Property And Equipment, Net [Abstract]  
Schedule Of Property And Equpment, Net
   
December 31,
 
   
2011
   
2012
 
             
Cost:
           
Computers, manufacturing, peripheral equipment
  $ 78,367     $ 90,724  
Office furniture and equipment
    4,391       4,566  
Leasehold improvements
    1,823       2,388  
                 
      84,581       97,678  
Accumulated depreciation:
               
Computers, manufacturing, peripheral equipment
    49,995       59,536  
Office furniture and equipment
    2,837       3,081  
Leasehold improvements
    1,284       1,419  
                 
      54,116       64,036  
                 
Depreciated cost
  $ 30,465     $ 33,642