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Note 21 - Supplemental Cash Flow Information (Tables)
 12 Months Ended
Jan. 31, 2020
Notes Tables  
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]
Year Ended    
January 31,
      
January 31,
      
January 31,
  
      2020       2019       2018  
Trade accounts receivable    
3,733
      
(135
 )    
(1,963
 )
Other accounts receivable    
(2,547
 )    
(451
 )    
16
  
Prepaid expenses and other    
(5,942
 )    
(4,466
 )    
(1,772
 )
Inventory    
(345
 )    
74
      
52
  
Accounts payable    
1,768
      
(1,065
 )    
1,428
  
Accrued liabilities    
3,265
      
2,570
      
(592
 )
Income taxes payable    
(1,550
 )    
(2,423
 )    
6,326
  
Operating leases    
546
      
–
      
–
  
Deferred revenue    
(4,184
 )    
2,047
      
902
  
     
(5,256
 )    
(3,849
 )    
4,397