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Note 11 - Concentrations of Credit Risk, Significant Customers and Geographic Information (Tables)
12 Months Ended
Dec. 31, 2022
Notes Tables  
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
  

Percent of Total Revenues

 
         

Significant Customer

 

2022

  

2021

 

A

  21

%

  10

%

B

  17

%

  23

%

C

  15

%

  11

%

Revenue from External Customers by Geographic Areas [Table Text Block]
  

Percent of Total Revenues

 
         

Country

 

2022

  

2021

 

United States of America

  42

%

  40

%

Germany

  16

%

  14

%

Other

  42

%

  46

%