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Business Segments, Concentration of Credit Risk and Significant Customers
9 Months Ended
Sep. 30, 2018
Segment Reporting [Abstract]  
Business Segments, Concentration of Credit Risk and Significant Customers

Note 5. Business Segments, Concentration of Credit Risk and Significant Customers

 

The Company operates in one business segment and uses one measurement of profitability for its business.  Net revenue is attributed to the United States and to all foreign countries based on the geographical location of the customer.

 

The Company recognized revenue from shipment of product and licensing of its technologies to customers by geographical location as follows (in thousands):

 

 

 

Three Months Ended

 

 

Nine Months Ended

 

 

 

September 30,

 

 

September 30,

 

 

 

2018

 

 

2017

 

 

2018

 

 

2017

 

North America

 

$

3,652

 

 

$

1,915

 

 

$

10,393

 

 

$

3,698

 

Japan

 

 

364

 

 

 

384

 

 

 

2,206

 

 

 

755

 

Taiwan

 

 

155

 

 

 

123

 

 

 

311

 

 

 

463

 

Rest of world

 

 

172

 

 

 

31

 

 

 

239

 

 

 

133

 

Total net revenue

 

$

4,343

 

 

$

2,453

 

 

$

13,149

 

 

$

5,049

 

 

Customers who accounted for at least 10% of total net revenue were:

 

 

 

Three Months Ended

 

Nine Months Ended

 

 

September 30,

 

September 30,

 

 

2018

 

2017

 

2018

 

2017

Customer A

 

37%

 

43%

 

34%

 

44%

Customer B

 

29%

 

24%

 

15%

 

15%

Customer C

 

*%

 

15%

 

17%

 

15%

Customer D

 

*%

 

*%

 

18%

 

*%

Customer E

 

*%

 

*%

 

*%

 

*%

 

*

Represents less than 10%

 

Four customers accounted for 83% of accounts receivable at September 30, 2018. One customer accounted for 63% of accounts receivable at December 31, 2017.