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DERIVATIVE INSTRUMENTS (Tables)
6 Months Ended
Jun. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule Of Derivative Instruments
   
Loss
recognized in Statements of Comprehensive income
     
Gain (loss) recognized
in consolidated statements of operations
 
   
Six months ended June 30,
2018
 
Statement of
 
Six months ended June 30,
 
     
Operations item
 
2017
   
2018
 
                     
Derivatives designated as hedging instruments:
                   
 
forward contract
 
$
(875
)
Operating expenses
 
$
(156
)
 
$
(262
)
                           
Derivatives not designated as hedging instruments:
                         
 
Foreign exchange forward contracts
   
-
 
Financial expenses
   
(1,374
)
   
1,076
 
                           
Total
 
$
(875
)
   
$
(1,530
)
 
$
814
 


      
December 31,
   
June 30,
 
Balance sheet
 
2017
   
2018
 
               
Derivatives designated as hedging instruments:
                 
Foreign exchange forward contracts
"Other account receivables and prepaid expenses"
 
$
303
   
$
-
 
"Other account payables and accrued expenses"
 
$
-
   
$
(875
)
"Other comprehensive income (loss)"
 
$
303
   
$
(875
)
               
Derivatives not designated as hedging instruments:
                 
Foreign exchange forward contracts and other derivatives
"Other receivables and prepaid expenses"
 
$
148
   
$
216
 
"Other account payables and accrued expenses"
 
$
(457
)
 
$
(260
)