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Note 7 - Accumulated Other Comprehensive Loss (Tables)
 6 Months Ended
Jul. 31, 2017
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
 
 
Foreign
Currency
Translation
Adjustments
 
 
 
(in thousands)
 
Balance as of January 31, 2017
   $
(8,631
)
Other comprehensive income before reclassifications
    
1,772
  
Amounts reclassified from accumulated other comprehensive loss
    
—
  
Net current period other comprehensive income
    
1,772
  
Balance as of
July 31, 2017
   $
(6,859
)