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Note 10 - Geographic Regions (Tables)
 6 Months Ended
Aug. 27, 2017
Notes Tables  
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
   
13 Weeks Ended
    
26 Weeks Ended
  
   
August 27,
2017
    
August 28,
2016
    
August 27,
2017
    
August 28,
2016
  
Sales:
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
                                 
North America
   $
17,997
     $
15,990
     $
33,413
     $
32,827
  
Asia
    
9,702
      
11,119
      
19,735
      
23,266
  
Europe
    
2,137
      
1,949
      
4,105
      
4,455
  
Total sales
  
$
29,836
    
$
29,058
    
$
57,253
    
$
60,548
  
   
August 27,
2017
    
February 26, 2017
  
Long-lived assets:
  
 
 
 
  
 
 
 
                 
North America
   $
21,221
     $
20,794
  
Asia
    
7,950
      
8,440
  
Europe
    
226
      
214
  
Total long-lived assets
  
$
29,397
    
$
29,448