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Note 5 - Trade Accounts Receivable (Tables)
 12 Months Ended
Jan. 31, 2021
Notes Tables  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
      January 31,       January 31,  
      2021       2020  
Trade accounts receivable    
39,536
      
37,121
  
Less: Provision for credit losses    
(2,330
 )    
(2,003
 )
     
37,206
      
35,118
  
Accounts Receivable, Allowance for Credit Loss [Table Text Block]
      Provision for Credit Losses  
Balance at January 31, 2020    
2,003
  
Current period provision for expected losses    
1,681
  
Write-offs charged against the provision    
(1,418
 )
Effect of movements in foreign exchange    
64
  
Balance at January 31, 2021    
2,330