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CONCENTRATION OF RISK
 3 Months Ended
Mar. 31, 2013
Risks and Uncertainties [Abstract]  
CONCENTRATION OF RISK
CONCENTRATION OF RISK

Included in technology development and support revenue in the accompanying statements of operations is $629,000 and $1.2 million for the three months ended March 31, 2013 and 2012, respectively, which was derived from contracts with United States government agencies.  Revenues derived from contracts with United States government agencies represented 4% and 9% of the consolidated revenue for the three months ended March 31, 2013 and 2012, respectively.

Revenues for the three months ended March 31, 2013 and 2012, and accounts receivable as of March 31, 2013, from our largest non-government customers were as follows:
 
 
% of Total Revenue
 
Accounts Receivable
(in thousands)
Customer
 
2013
 
2012
 
March 31, 2013
 A
 
42%
 
42%
 
$4,829
 B
 
21%
 
12%
 
1,260
C
 
19%
 
13%
 
2,822

Revenues from outside of North America represented 95% and 90% of consolidated revenue for the three months ended March 31, 2013 and 2012, respectively. Revenues by geographic area are as follows (in thousands):

Country
2013
 
2012
United States
$
755

 
$
1,274

South Korea
9,344

 
7,393

Japan
4,612

 
2,566

Taiwan
166

 
1,257

Other
99

 
130

All foreign locations
14,221

 
11,346

Total revenue
$
14,976

 
$
12,620


The Company attributes revenue to different geographic areas on the basis of the location of the customer.
 
Long-lived assets (net) by geographic area at March 31, 2013 and December 31, 2012 are as follows (in thousands):

 
March 31, 2013
 
December 31, 2012
United States
$
12,225

 
$
11,512

Other
287

 
296

Total long-lived assets
$
12,512

 
$
11,808


 
All chemical materials were purchased from one supplier. See Note 7.