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Segment Information (Tables)
6 Months Ended
Jun. 30, 2012
Segment Reporting [Abstract]  
Revenues by geographic region
 

 
   
Three months ended
June 30, 2012
   
Three months ended
June 30, 2011
 
   
Amount
   
Percentage
   
Amount
   
Percentage
 
Net revenues made in the U.S.
 
$
1,218
     
62
%
 
$
130
     
46
%
                                 
Net revenues made outside of the U.S.
   
756
     
38
%
   
153
     
54
%
                                 
   
$
1,974
     
100
%
 
$
283
     
100
%
 
   
Six months ended
June 30, 2012
   
Six months ended
June 30, 2011
 
   
Amount
   
Percentage
   
Amount
   
Percentage
 
Net revenues made in the U.S.
 
$
2,000
     
64
%
 
$
130
     
16
%
                                 
Net revenues made outside of the U.S.
   
1,138
     
36
%
   
692
     
84
%
                                 
   
$
3,138
     
100
%
 
$
822
     
100
%