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Sales (Tables)
12 Months Ended
Dec. 31, 2013
Sales [Abstract]  
Sales by Geographic Region
Sales are attributed to geographic distribution based on the location of the customer.
 
 
 
Year ended December 31
 
 
 
2011
   
2012
   
2013
 
 
 
US$ thousands
 
 
 
 
   
 
   
 
 
North America
    29,627       33,606       55,655  
Europe
    5,174       7,277       9,257  
Rest of the world
    4,832       7,846       8,386  
 
                       
 
    39,633       48,729       73,298
Sales to Single Customers Exceeding 10% of Sales
Sales to single customers exceeding 10% of sales (US$ thousands):
 
 
 
Year ended December 31
 
 
 
2011
   
2012
   
2013
 
 
 
US$ thousands
 
 
 
 
   
 
   
 
 
Customer "A"
    4,882       10,809       24,512  
Customer "B"
    4,195       8,714       *  
 
 
*
Less than 10% of sales.