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Segment Information (Tables)
 9 Months Ended
Sep. 30, 2015
Segment Reporting [Abstract]  
Summary of Revenues on Percentage Basis by Geographic Regions

The following table summarizes revenues on a percentage basis by geographic regions, based on the country in which the customer is located.

 

 

 

Quarters ended

September 30,

 

 

Nine months ended

September 30,

 

 

 

2015

 

 

2014

 

 

2015

 

 

2014

 

United States

 

 

67

%

 

 

72

%

 

 

65

%

 

 

75

%

South America

 

 

11

%

 

 

—

 

 

 

13

%

 

 

—

 

Japan

 

 

2

%

 

 

7

%

 

 

2

%

 

 

6

%

Europe

 

 

19

%

 

 

17

%

 

 

19

%

 

 

15

%

Other

 

 

1

%

 

 

4

%

 

 

1

%

 

 

4

%

 

 

 

100

%

 

 

100

%

 

 

100

%

 

 

100

%