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Note 5 - Trade Receivables (Tables)
12 Months Ended
Jan. 31, 2020
Notes Tables  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
     
January 31,
     
January 31,
 
      2020       2019  
Trade receivables    
37,121
     
33,350
 
Less: Allowance for doubtful accounts    
(2,003
)    
(1,857
)
     
35,118
     
31,493