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Segment Information
 9 Months Ended
Sep. 30, 2012
Segment Reporting [Abstract]  
Segment Information
SEGMENT INFORMATION
We have identified a single operating segment: the design and development of ICs for use in electronic display devices. A majority of our assets are located in the United States.

Geographic Information
Revenue by geographic region, attributed to countries based on the domicile of the end customer, is as follows:
 
Three Months Ended
 
Nine Months Ended
 
September 30,
 
September 30,
 
2012
 
2011
 
2012
 
2011
Japan
$
10,321

 
$
12,024

 
$
26,681

 
$
32,090

Taiwan
3,034

 
2,939

 
7,632

 
7,883

United States
1,056

 
410

 
5,836

 
1,177

China
741

 
687

 
2,584

 
1,787

Europe
445

 
541

 
1,264

 
1,879

Korea
206

 
306

 
787

 
1,319

Other
482

 
484

 
1,355

 
1,646

 
$
16,285

 
$
17,391

 
$
46,139

 
$
47,781



Significant Customers
The percentage of revenue attributable to our distributors, top five end customers, and individual distributors or end customers that represented more than 10% of revenue in at least one of the periods presented, is as follows:
 
Three Months Ended
 
Nine Months Ended
 
September 30,
 
September 30,
 
2012
 
2011
 
2012
 
2011
Distributors:
 
 
 
 
 
 
 
All distributors
78
%
 
75
%
 
71
%
 
69
%
Distributor A
52
%
 
58
%
 
50
%
 
52
%
End customers: 1
 
 
 
 
 
 
 
Top five end customers
56
%
 
55
%
 
54
%
 
55
%
End customer A
19
%
 
15
%
 
17
%
 
13
%
End customer B
17
%
 
16
%
 
14
%
 
13
%
End customer C
5
%
 
11
%
 
5
%
 
15
%

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,
2012
 
December 31,
2011
Account A
19
%
 
54
%
Account B
13
%
 
—
%
Account C
12
%
 
—
%
Account D
11
%
 
6
%
Account E
6
%
 
10
%