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Note 11 - Restricted Cash (Tables)
9 Months Ended
Oct. 31, 2019
Notes Tables  
Restrictions on Cash and Cash Equivalents [Table Text Block]
   
Nine Months Ended October 31,
 
   
2019
   
2018
 
Cash and cash equivalents
  $
12,221
    $
9,582
 
Restricted cash
   
1,138
     
2,536
 
Cash, cash equivalents and restricted cash shown in the statement of cash flows
  $
13,359
    $
12,118