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Note 11 - Restricted Cash (Tables)
3 Months Ended
Apr. 30, 2020
Notes Tables  
Restrictions on Cash and Cash Equivalents [Table Text Block]
                 
   
April 30, 2020
   
April 30, 2019
 
Cash and cash equivalents
  $
12,450
    $
7,960
 
Restricted cash
   
1,105
     
2,602
 
Cash, cash equivalents and restricted cash shown in the statement of cash flows
  $
13,555
    $
10,562