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Note 8 - Accumulated Other Comprehensive Loss (Tables)
 6 Months Ended
Jul. 31, 2018
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 income before reclassifications
    
(836
)
Amounts reclassified from accumulated other comprehensive loss
    
-
  
Net current period other comprehensive income
    
(836
)
Balance as of July 31, 2018
   $
(7,664
)