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Goodwill and Intangible Assets, Net (Tables)
 12 Months Ended
Dec. 31, 2015
Goodwill and Intangible Assets, Net [Abstract]  
Goodwill
   
December 31,
  
   
2015
    
2014
  
   
U.S. Dollars
  
Goodwill
     3,653       3,653  
Accumulated impairment losses
     (3,653 )     (2,098 )
                 
      -       1,555  
Intangible Assets, Net
   
December 31,
  
   
2015
    
2014
  
   
U.S. Dollars
  
Patent registration costs
     2,077       1,959  
IPR&D
     1,002       1,002  
                 
Intangible assets at cost
     3,079       2,961  
                 
Accumulated amortization and impairment
     2,284       2,033  
                 
Total intangible asset, net
     795       928  
Estimated Amortization Expense
Year ending December 31,
  
U.S. Dollars
  
2016
     141  
2017
     133  
2018
     133  
2019
     133  
2020
     111  
      651