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Research And Development Expenses, Net
12 Months Ended
Dec. 31, 2017
Research and Development Expense [Abstract]  
Research And Development Expenses, Net RESEARCH AND DEVELOPMENT, NET

 
Year ended December 31,
 
2017
 
2016
 
2015
Total expenses
$
301,382

 
$
291,749

 
$
277,837

Less - grants and participations
(36,322
)
 
(35,957
)
 
(34,421
)
 
$
265,060

 
$
255,792

 
$
243,416