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SIGNIFICANT ACCOUNTING POLICIES (Tables)
12 Months Ended
Dec. 31, 2015
Accounting Policies [Abstract]  
Property and Equipment Annual Depreciation Rates
Depreciation is calculated using the straight-line method over the estimated useful lives of the assets at the following annual rates:

 
%
   
Computers, peripheral equipment and software
15 - 33 (mainly 33)
Office furniture and equipment
6 - 20 (mainly 15)
Leasehold improvements
Over the shorter of the term of
the lease or the useful life of the asset
Schedule of Weighted Average Assumptions Used to Calculate Fair Value of Company's Stock Options
The fair value of the Company's stock options granted to employees and directors for the years ended December 31, 2013, 2014 and 2015 was estimated using the following weighted average assumptions:

Employees' stock option plan:
 
   
Year ended
December 31,
 
   
2013
   
2014
   
2015
 
                   
Risk free interest rate
    0.81 %     1.10 %     1.21 %
Dividend yields
    0 %     0 %     0 %
Expected volatility
    44 %     40 %     34 %
Weighted average expected term from grant date (in years)
    3.93       3.72       3.86