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Note 13 - Business Segment Information (Tables)
 3 Months Ended
Apr. 30, 2020
Notes Tables  
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
   
Three Months Ended
April 30,
  
   
2020
    
2019
  
   
(in thousands)
  
Revenue:
                
North America
(1)
   $
37,002
     $
37,659
  
EMEA
    
22,568
      
22,509
  
Asia Pacific
    
9,642
      
11,886
  
Latin America
    
4,935
      
5,981
  
    $
74,147
     $
78,035