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SIGNIFICANT ACCOUNTING POLICIES (Tables)
 12 Months Ended
Dec. 31, 2017
Accounting Policies [Abstract]  
Schedule Of Annual Depreciation Rates
Property and equipment are stated at cost, net of accumulated depreciation. Depreciation is calculated by the straight-line method over the estimated useful lives of the assets, at the following annual rates:
 
 
%
   
Computers, manufacturing and peripheral equipment
6 – 33
Enterprise Resource Planning systems ("ERP")
10
Office furniture and equipment
 Mainly 15
Leasehold improvements
Over the shorter of the term of the lease or useful life of the asset
Schedule Of Stock Option Granted Assumptions
The Company estimates the fair value of stock options granted under ASC 718 using the binomial model with the following weighted-average assumptions for 2015, 2016 and 2017:

   
December 31,
   
2015
  
2016
  
2017
             
Dividend yield
  
0%
  
0%
  
0%
Volatility
  
48%-70%
  
51%-73%
  
53%-69%
Risk free interest
  
0.1%-2.40%
  
0.2%-2.1%
  
0.8%-2.2%
Early exercise multiple
  
2.60-3.40
  
2.20-3.40
  
2.10-2.20
Schedule of Accumulated Other Comprehensive Income, Net
The components of AOCI, were as follows:

   
Unrealized Gains (Losses) on Cash Flow Hedges
    
Foreign Currency Translation Adjustments
    
Total
  
                   
Balance as of January 1, 2017
  
$
(256
)
  
$
(7,592
)
  
$
(7,848
)
                         
Other comprehensive income  before reclassifications
    
2,331
      
118
      
2,449
  
Amounts reclassified from AOCI
    
(1,772
)
    
-
      
(1,772
)
                         
Other comprehensive income
    
559
      
118
      
677
  
                         
Balance as of December 31, 2017
    $
303
      $
(7,474
)
    $
(7,171
)