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Segment Information
12 Months Ended
Dec. 31, 2018
Segment Reporting [Abstract]  
SEGMENT INFORMATION

2. SEGMENT INFORMATION

 

The Company has determined that it operates in only one segment as it only reports profit and loss information on an aggregate basis to its chief operating decision maker.

 

Revenue is attributed by geographic region based on ship-to location of the Company’s customers. The following table summarizes revenue by geographic region:

 

   Year ended December 31, 
   2018   2017 
   (in thousands) 
         
North America  $3,389   $4,057 
Asia   478    942 
Europe   11    45 
           
Total revenue  $3,878   $5,044 

 

The following table summarizes sales by product type:

 

   Year ended December 31, 
   2018   2017 
   (in thousands) 
     
Optical  $3,781   $4,615 
Wafer       9 
Core   41    26 
Research & development   56    394 
           
Total revenue  $3,878   $5,044 

 

The following table summarizes assets by geographic region:

 

   As of December 31, 
   2018   2017 
   (in thousands) 
     
United States  $30,680   $30,037 
Malaysia   5,110    5,007 
Other   4    4 
Total assets  $35,794   $35,048