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Note 14 - Business Segment Information (Tables)
 3 Months Ended
Apr. 30, 2019
Notes Tables  
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
   
Three Months Ended
April 30,
  
   
2019
    
2018
  
 
  
(in thousands)
  
Revenue:      
North America
(1)
   $
37,659
     $
40,025
  
EMEA
    
22,509
      
25,087
  
Asia Pacific
    
11,886
      
12,559
  
Latin America
    
5,981
      
8,519
  
    $
78,035
     $
86,190