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Note 11 - Restricted Cash (Tables)
 6 Months Ended
Jul. 31, 2019
Notes Tables  
Restrictions on Cash and Cash Equivalents [Table Text Block]
   
Six Months Ended July 31,
 
   
2019
    
2018
  
Cash and cash equivalents
   $
8,052
     $
5,247
  
Restricted cash
    
1,167
      
1,108
  
Cash, cash equivalents and restricted cash shown in the statement of cashflows
   $
9,219
     $
6,355