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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 12 Months Ended
Dec. 31, 2017
Accounting Policies [Abstract]  
Schedule of Relevant Exchange Rates of US Dollar and Israeli CPI
The following table presents data regarding the dollar exchange rate of relevant currencies and the Israeli CPI:
 
   
Exchange rate
of one US dollar
    
Israeli CPI(*)
  
   
NIS
    
Real
    
Pezo
        
At December 31,
                        
2017
    
3.467
      
3.3080
      
18.774
    
113.05 points
  
2016
    
3.845
      
3.2591
      
15.850
    
112.59 points
  
2015
    
3.902
      
3.9048
      
13.005
    
112.82 points
  
Increase (decrease) during the year:
                              
2017
    
(9.83
)%
    
1.50
%
    
18.45
%
    
0.4
%
2016
    
(1.46
)%
    
(16.54)
%
    
21.87
%
    
(0.2
)%
2015
    
0.33
%
    
47.01
%
    
52.07
%
    
(1.0
)%
 
(*)
Based on the Index for the month ending on each balance sheet date, on the basis of 2008 average 100.
Schedule of Depreciation Rates
Rates of depreciation:
 
 
%
Operating equipment (mainly 20%-33%)
6.5-33
Office furniture, equipment and computers
7-33
Buildings
2.5
Vehicles
15
Leasehold improvements
Duration of the lease which
is less or equal to useful life.