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Note 4 - Segment Information (Tables)
3 Months Ended
Mar. 31, 2024
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
  

Three Months Ended March 31,

 
  

2024

  

2023

 

Domestic

 $2,874  $2,767 

International (1)

  7,064   5,076 

Total

 $9,938  $7,843 
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]
  

Three Months Ended March 31,

 
  

2024

  

2023

 

Customer A

  42%  50%

Customer B

  18%  23%

Customer C

  14%  * 
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
  

March 31,

  

December 31,

 
  

2024

  

2023

 

United States

 $1,414  $1,535 

Europe

  31   35 

Total

 $1,445  $1,570