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Note 22 - Segment and Geographical Disclosures (Tables)
3 Months Ended
Feb. 28, 2022
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]

Revenue:

            

Three Months Ended

 

U.S.

  

South Africa

  

Total

 

February 28, 2022

 $7,882  $95  $7,977 

February 28, 2021

  8,457   436   8,893