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Segment Information (Tables)
 6 Months Ended
Jun. 30, 2017
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 region in which the customer is located.

 

 

 

Quarter Ended June 30,

 

 

Six Months Ended June 30,

 

 

 

 

2017

 

 

2016

 

 

2017

 

 

2016

 

United States

 

 

72

%

 

 

65

%

 

 

66

%

 

 

63

%

South America

 

 

10

%

 

 

10

%

 

 

10

%

 

 

11

%

Japan

 

 

2

%

 

 

2

%

 

 

2

%

 

 

2

%

Europe

 

 

11

%

 

 

16

%

 

 

16

%

 

 

18

%

Other

 

 

5

%

 

 

7

%

 

 

6

%

 

 

6

%

 

 

 

100

%

 

 

100

%

 

 

100

%

 

 

100

%