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Note 8 - Accumulated Other Comprehensive Loss (Tables)
 3 Months Ended
Apr. 30, 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
    
(510
 )
Amounts reclassified from accumulated other comprehensive loss
    
-
  
Net current period other comprehensive loss
    
(510
 )
Balance as of April 30, 2018
   $
(7,338
)