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Note 6 - Goodwill (Tables)
 3 Months Ended
Apr. 30, 2018
Notes Tables  
Schedule of Goodwill [Table Text Block]
   
Gross Carrying
Amount
    
Accumulated
Impairment
    
Goodwill, Net
  
   
(in thousands)
  
Balance at January 31, 2018
   $
26,631
     $
(15,608
)
   $
11,023
  
Impact of foreign currency translation
    
(49
 )    
—
      
(49
 )
Balance at April 30, 2018
   $
26,582
     $
(15,608
)
   $
10,974