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Note 6 - Impairment of Long-lived Assets (Tables)
9 Months Ended
Oct. 31, 2020
Notes Tables  
Schedule of Goodwill [Table Text Block]
   
January 31, 2020
   
Foreign exchange change effect
   
October 31, 2020
 
Goodwill
  $
2,254
    $
(17
)   $
2,237