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Note 14 - Geographic Regions (Tables)
 12 Months Ended
Mar. 03, 2019
Notes Tables  
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
   
Fiscal Year
  
   
2019
    
2018
    
2017
  
                         
Sales:
  
 
 
 
  
 
 
 
  
 
 
 
                         
North America   $
47,505
     $
38,641
     $
30,079
  
Asia
    
1,070
      
563
      
729
  
Europe
    
2,541
      
1,026
      
1,029
  
Total sales
  
$
51,116
    
$
40,230
    
$
31,837
  
                         
Long-lived assets:
  
 
 
 
  
 
 
 
  
 
 
 
                         
North America   $
19,372
     $
18,313
     $
19,546
  
Asia
    
1,546
      
1,680
      
1,871
  
Europe
    
-
      
-
      
-
  
Total long-lived assets
  
$
20,918
    
$
19,993
    
$
21,417