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Note 6 - Stock-based Compensation (Tables)
 9 Months Ended
Nov. 29, 2020
Notes Tables  
Share-based Payment Arrangement, Option, Activity [Table Text Block]
   
Outstanding
Options
    
Weighted
Average
Exercise Price
    
Weighted Average
Remaining Contractual
Term (in years)
    
Aggregate
Intrinsic
Value
  
                                 
Balance, March 1, 2020
  
 
510,634
    
$
12.45
    
 
 
 
  
$
480
  
Granted
    
132,100
      
12.55
      
 
      
 
  
Exercised
    
-
      
-
      
 
      
 
  
Terminated or expired
    
(5,850
 )    
12.88
      
 
      
 
  
Balance, November 29, 2020
  
 
636,884
    
$
12.46
    
 
5.44
    
$
592
  
Vested and exercisable, November 29, 2020
  
 
427,709
    
$
11.88
    
 
3.69
    
$
646