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Note 10 - Customer and Geographic Information
 12 Months Ended
Dec. 31, 2014
Segment Reporting [Abstract]  
Segment Reporting Disclosure [Text Block]

10.  Customer and Geographic Information


Operating segments are defined as components of an enterprise about which separate financial information is available that is evaluated regularly by the chief operating decision maker, or group, in deciding how to allocate resources and in assessing performance.


The Company’s chief operating decision maker, the chief executive officer, reviews discrete financial information presented on a consolidated basis for purposes of regularly making operating decisions and assessing financial performance. Accordingly the Company considers itself to be in one operating segment, specifically the licensing and implementation of yield improvement solutions for integrated circuit manufacturers.


The Company had revenues from individual customers in excess of 10% of total revenues as follows:


   

Year Ended December 31,

 

Customer

 

2014

   

2013

   

2012

 

A

    52

%

    33

%

    40

%

B

    16

%

    17

%

    20

%

C

    11

%

    24

%

    13

%


The Company had accounts receivable balances from individual customers in excess of 10% of the gross accounts receivable balance as follows:


   

December 31,

 

Customer

 

2014

   

2013

 

A

    51

%

    36

%

B

    21

%

    17

%

C

    *       23

%


*  represents less than 10%


Revenues from customers by geographic area based on the location of the customers’ work sites are as follows (in thousands):


   

Year Ended December 31,

 
   

2014

   

2013

   

2012

 
   

Revenues

   

Percentage of

Revenues

   

Revenues

   

Percentage of

Revenues

   

Revenues

   

Percentage of

Revenues

 

United States

  $ 44,963       44

%

  $ 39,057       38

%

  $ 35,509       40

%

Germany

    35,142       35       22,431       22       25,928       29  

South Korea

    5,667       6       20,953       21       9,160       10  

Japan

    3,789       4       8,340       8       8,514       10  

Rest of the world

    10,602       11       10,672       11       10,429       11  

Total revenue

  $ 100,163       100

%

  $ 101,453       100

%

  $ 89,540       100

%


Long-lived assets, net by geographic area is as follows (in thousands):


   

December 31,

 
   

2014

   

2013

 

United States

  $ 8,240     $ 6,578  

Rest of the world

    592       486  

Total long-lived assets, net

  $ 8,832     $ 7,064