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Note 10 - Geographic Regions (Tables)
 9 Months Ended
Dec. 01, 2019
Notes Tables  
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
   
13 Weeks Ended
    
39 Weeks Ended
  
   
December 1,
2019
    
November 25,
2018
    
December 1,
2019
    
November 25,
2018
  
                                 
Sales:
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
                                 
North America
   $
14,469
     $
12,223
     $
41,546
     $
31,690
  
Asia
    
473
      
150
      
882
      
505
  
Europe
    
905
      
480
      
2,092
      
2,262
  
Total sales
  
$
15,847
    
$
12,853
    
$
44,520
    
$
34,457
  
   
December 1,
2019
    
March 3,
2019
  
Long-lived assets:
  
 
 
 
  
 
 
 
                 
North America
   $
22,867
     $
19,372
  
Asia
    
1,692
      
1,546
  
Europe
    
-
      
-
  
Total long-lived assets
  
$
24,559
    
$
20,918