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Note 19 - Contract Balances, Performance Obligations and Contract Costs (Tables)
 12 Months Ended
Jan. 31, 2020
Notes Tables  
Contract with Customer, Asset and Liability [Table Text Block]
     
Deferred Revenue
  
Balance at January 31, 2018    
32,113
  
Recognition of previously deferred revenue    
(27,252
 )
Deferral of revenue    
29,423
  
Increases from business combinations, net    
1,789
  
Effect of movements in foreign exchange    
(982
 )
Balance at January 31, 2019    
35,091
  
Recognition of previously deferred revenue    
(30,580
 )
Deferral of revenue    
37,408
  
Increases from business combinations, net    
551
  
Effect of movements in foreign exchange    
(407
 )
Balance at January 31, 2020    
42,063
  
Current    
41,143
  
Long-term    
920
  
     
Contract Assets
  
Balance at January 31, 2018    
–
  
Adjustment for adoption of ASC 606    
495
  
Balance at February 1, 2018    
495
  
Transfers to trade receivables from contract assets    
(266
 )
Increases as a result of delivered term licenses recognized as revenue during the period, net of amounts transferred to trade receivables    
606
  
Effect of movements in foreign exchange    
(23
 )
Balance at January 31, 2019    
812
  
Transfers to trade receivables from contract assets    
(490
 )
Increases as a result of delivered term licenses recognized as revenue during the period, net of amounts transferred to trade receivables    
791
  
Effect of movements in foreign exchange    
(6
 )
Balance at January 31, 2020    
1,107