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Note 10 - Accumulated Other Comprehensive Loss (Tables)
 12 Months Ended
Jan. 31, 2020
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
   
Foreign Currency
Translation
Adjustments
  
   
(in thousands)
  
Balance as of January 31, 2018
   $
(6,828
)
Other comprehensive loss before reclassifications
    
(833
)
Amounts reclassified from accumulated other comprehensive loss
    
—
  
Net current period other comprehensive loss
    
(833
)
Balance as of January 31, 2019
   $
(7,661
)
Other comprehensive loss before reclassifications
    
(684
)
Amounts reclassified from accumulated other comprehensive loss
    
—
  
Net current period other comprehensive loss
    
(684
)
Balance as of January 31, 2020
   $
(8,345
)