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Note 12 - Interest Expense, Net (Tables)
12 Months Ended
Jan. 31, 2019
Notes Tables  
Schedule of Other Nonoperating Income (Expense) [Table Text Block]
(In thousands)
 
2018
 
2017
Interest expense
  $
1,286
 
  $
808
 
Interest income
   
(164
)
   
(111
)
Interest expense, net
 
$
1,122
 
 
$
697