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Intangible Assets (Tables)
12 Months Ended
Dec. 31, 2018
Intangible Assets, Net (Excluding Goodwill) [Abstract]  
Schedule of Net Intangible Assets
Net intangible assets as of December 31, 2018 are as follows:
       
 
         
December 31
 
         
2017
   
2018
 
   
Useful life
   
US$ thousands
 
Original cost:
                 
Current technology
   
3
     
3,844
     
3,832
 
Customer relationships
   
3
     
1,937
     
1,937
 
Capitalization of software development costs
    3      
-
     
928
 
Licenses
   
3
     
-
     
106
 
             
5,781
     
6,803
 
Accumulated amortization:
                       
Current technology
           
3,181
     
3,832
 
Customer relationships
           
1,553
     
1,937
 
Capitalization of software development costs
           
-
     
37
 
Licenses
           
-
     
31
 
             
4,734
     
5,837
 
                         
Intangible assets, Net:
                       
Current technology
           
663
     
-
 
Customer relationships
           
384
     
-
 
Capitalization of software development costs
           
-
     
891
 
Licenses
           
-
     
75
 
             
1,047
     
966