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PROPERTY AND EQUIPMENT, NET (Tables)
12 Months Ended
Dec. 31, 2012
Property and Equipment, Net
     December 31,  
     2011      2012  

Cost:

     

Computers and peripheral equipment

   $ 58,779       $ 64,026   

Office furniture and equipment

     5,728         5,966   

Building

     33,863         34,396   

Leasehold improvement

     4,466         5,393   
  

 

 

    

 

 

 
     102,836         109,781   

Accumulated depreciation

     66,197         72,808   
  

 

 

    

 

 

 

Property and equipment, net

   $ 36,639       $ 36,973