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Segment Information and Foreign Operations
 12 Months Ended
Dec. 31, 2013
Segment Information and Foreign Operations [Abstract]  
Segment Information and Foreign Operations
Note 15. Segment Information and Foreign Operations

Segment Information
 
We operate in one segment for the design, development, manufacture and distribution of high-performance compound semiconductor substrates and sale of materials. In accordance with ASC topic 280, Segment Reporting, our chief operating decision‑maker has been identified as the Chief Executive Officer, who reviews operating results to make decisions about allocating resources and assessing performance for the Company. Since we operate in one segment, all financial segment and product line information can be found in the consolidated financial statements.

Product Type
 
The following table represents revenue amounts (in thousands) by product type:
 
 
 
Years Ended December 31,
 
 
 
2013
  
2012
  
2011
 
Product type:
 
  
  
 
GaAs
 
$
40,234
  
$
51,368
  
$
63,697
 
InP
  
7,128
   
6,024
   
5,182
 
Ge
  
16,962
   
8,734
   
11,635
 
Raw materials and other
  
21,011
   
22,248
   
23,607
 
 
 
$
85,335
  
$
88,374
  
$
104,121
 
 
Geographical Information
 
The following table represents revenue amounts (in thousands) reported for products shipped to customers in the corresponding geographic region:
 
 
 
Years Ended December 31,
 
 
 
2013
  
2012
  
2011
 
Product revenue:
 
  
  
 
China
  
24,946
   
19,815
   
25,181
 
Europe (primarily Germany)
  
21,387
   
18,170
   
21,082
 
North America (primarily the United States)
 
$
10,665
  
$
15,391
  
$
20,471
 
Taiwan
  
10,131
   
10,985
   
9,813
 
Japan
  
9,041
   
9,346
   
13,749
 
Asia Pacific (excluding China, Japan and Taiwan)
  
9,165
   
14,667
   
13,825
 
 
 
$
85,335
  
$
88,374
  
$
104,121
 

Long-lived assets consist primarily of property, plant and equipment, and are attributed to the geographic location in which they are located. Long-lived assets by geographic region were as follows (in thousands):
 
 
 
As of December 31,
 
 
 
2013
  
2012
 
Long-lived assets:
 
  
 
United States of America
 
$
204
  
$
430
 
China
  
37,417
   
36,805
 
 
 
$
37,621
  
$
37,235