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FINANCIAL INCOME (EXPENSES), NET (Tables)
 12 Months Ended
Dec. 31, 2018
Other Income and Expenses [Abstract]  
Schedule of Other Nonoperating Income (Expense) [Table Text Block]
 
 
Year Ended December 31,
 
 
 
2016
 
 
2017
 
 
2018
 
 
 
 
 
 
 
 
 
 
 
Financial expenses:
 
 
 
 
 
 
 
 
 
 
 
 
Loss related to non-hedging derivative instruments
 
$
(90
)
 
$
(9
)
 
$
-
 
Interest
 
 
(262
)
 
 
(294
)
 
 
(266
)
Amortization of marketable securities premiums and accretion of discounts, net
 
 
(853
)
 
 
(570
)
 
 
(353
)
Exchange rate differences
 
 
(519
)
 
 
(73
)
 
 
(318
)
Other
 
 
(283
)
 
 
(273
)
 
 
(265
)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(2,007
)
 
 
(1,219
)
 
 
(1,202
)
Financial income:
 
 
 
 
 
 
 
 
 
 
 
 
Gain related to non-hedging derivative instruments
 
 
-
 
 
 
-
 
 
 
305
 
Interest and other
 
 
1,847
 
 
 
1,209
 
 
 
1,125
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1,847
 
 
 
1,209
 
 
 
1,430
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
$
(160
)
 
$
(10
)
 
$
228