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Note 21 - Segment and Geographical Disclosures (Tables)
3 Months Ended
Feb. 28, 2023
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]

Revenue:

                    

Three Months Ended

 

U.S.

  

South Africa

  

Europe/South America/Asia

  

Canada

  

Total

 

February 28, 2023

 $7,992  $33  $125  $261  $8,411 

February 28, 2022

  7,882   95         7,977