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Note 6 - Stock-based Compensation (Tables)
 9 Months Ended
Dec. 01, 2019
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 3, 2019
  
 
540,709
    
$
13.49
    
 
 
 
  
$
1,525
  
Granted
    
114,450
      
16.44
      
 
      
 
  
Exercised
    
(31,986
 )    
12.69
      
 
      
 
  
Terminated or expired
    
(104,814
 )    
16.98
      
 
      
 
  
Balance, December 1, 2019
  
 
518,359
    
$
13.48
    
 
5.76
    
$
1,467
  
Vested and exercisable, December 1, 2019
  
 
375,422
    
$
13.02
    
 
4.50
    
$
1,235