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Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2015
Accounting Policies [Abstract]  
Schedule of Revenue by Major Customers by Geographic Area

following table sets forth revenue by geographic area for countries with revenue accounting for more than 10% of the total revenue during the periods presented:

 

     Years ended December 31,  
     2015     2014     2013  

United States

     35     —       —  

Australia

     20     35     30

United Kingdom

     12     18     19

Germany

     13     17     18