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Note 10 - Geographic Regions (Tables)
 9 Months Ended
Nov. 26, 2017
Notes Tables  
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
   
13 Weeks Ended
    
39 Weeks Ended
  
   
November 26, 2017
    
November 27, 2016
    
November 26, 2017
    
November 27, 2016
  
                                 
Sales:
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
                                 
North America
   $
16,570
     $
13,038
     $
49,983
     $
45,865
  
Asia
    
7,326
      
10,794
      
27,061
      
34,060
  
Europe
    
2,243
      
2,630
      
6,348
      
7,085
  
Total sales
  
$
26,139
   
$
26,462
   
$
83,392
   
$
87,010
 
   
November 26,
2017
    
February 26,
2017
  
Long-lived assets:
  
 
 
 
  
 
 
 
                 
North America
   $
20,888
     $
20,794
  
Asia
    
7,733
      
8,440
  
Europe
    
240
      
214
  
Total long-lived assets
  
$
28,861
   
$
29,448