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Segment Information
 9 Months Ended
Sep. 30, 2015
Segment Reporting [Abstract]  
Segment Information
SEGMENT INFORMATION
We have identified a single operating segment: the design and development of integrated circuits for use in electronic display devices. The majority of our assets are located in the United States.
Geographic Information
Revenue by geographic region, is as follows:
 
Three Months Ended
 
Nine Months Ended
 
September 30,
 
September 30,
 
2015
 
2014
 
2015
 
2014
Japan
$
14,295

 
$
11,604

 
$
38,835

 
$
25,678

Taiwan
1,602

 
1,866

 
4,682

 
6,819

Korea
217

 
388

 
803

 
2,759

China
189

 
2,262

 
608

 
4,641

Europe
124

 
484

 
463

 
1,504

United States
23

 
163

 
92

 
3,354

Other
120

 
344

 
557

 
1,063

 
$
16,570

 
$
17,111

 
$
46,040

 
$
45,818



Significant Customers
The percentage of revenue attributable to our distributors, top five end customers, and individual distributors or end customers that represented 10% or more of revenue in at least one of the periods presented, is as follows:
 
Three Months Ended
 
Nine Months Ended
 
September 30,
 
September 30,
 
2015
 
2014
 
2015
 
2014
Distributors:
 
 
 
 
 
 
 
All distributors
48
%
 
60
%
 
46
%
 
66
%
Distributor A
32
%
 
27
%
 
29
%
 
31
%
Distributor B
1
%
 
13
%
 
1
%
 
9
%
End customers: 1
 
 
 
 
 
 
 
Top five end customers
85
%
 
74
%
 
83
%
 
56
%
End customer A
48
%
 
32
%
 
49
%
 
16
%
End customer B
13
%
 
9
%
 
11
%
 
13
%
End customer C
9
%
 
13
%
 
9
%
 
12
%
End customer D
—
%
 
12
%
 
—
%
 
8
%

1 
End customers include customers who purchase directly from us, as well as customers who purchase our products indirectly through distributors.
The following accounts represented 10% or more of total accounts receivable in at least one of the periods presented:
 
September 30,
2015
 
December 31,
2014
Account X
55
%
 
37
%
Account Y
16
%
 
15
%
Account Z
—
%
 
16
%