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Note 10 - Stockholders' Equity (Tables)
 6 Months Ended
Aug. 31, 2020
Notes Tables  
Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]
   
Six Months Ended
  
   
August 31,
  
   
2020
    
2019
  
Outstanding non-vested restricted stock units as of February 28 or 29:
    
265,555
      
25,002
  
Granted
    
-
      
270,000
  
Vested
    
(47,929
 )    
(28,502
 )
Cancelled/forfeited
    
-
      
-
  
Outstanding non-vested restricted stock units as of August 31:
    
217,626
      
266,500
  
                 
Weighted average grant date fair value
   $
9.40
     $
9.40
  
Weighted average remaining vesting period (in years)
    
4.15
      
5.14