Note 12 - Interest Expense, Net (Tables)
 12 Months Ended
Jan. 31, 2020
Notes Tables  
Schedule of Other Nonoperating Income (Expense) [Table Text Block]
(In thousands)
  
2019
  
2018
Interest expense
   $
1,106
 
   $
1,286
 
Interest income
    
(201
)
    
(164
)
Interest expense, net
   $
905
 
   $
1,122