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Note 14 - Stockholders' Equity (Tables)
3 Months Ended
Aug. 31, 2022
Notes Tables  
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
  For the three months 
  ended August 31, 
  

2022

  

2021

 

Stock options

 $604  $2,756 

RSUs

  8,589   6,661 

Total

 $9,193  $9,417