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Note 13 - Discontinued Operations (Tables)
 12 Months Ended
May 27, 2018
Notes Tables  
Disposal Groups, Including Discontinued Operations [Table Text Block]
   
Year Ended
  
   
May 27, 2018
    
May 28, 2017
  
Current and other assets, discontinued operations:
                
Cash and cash equivalents
   $
(8
 )   $
(589
 )
Accounts receivable
    
518
      
1,184
  
Inventory
    
—
      
1,670
  
Other assets
    
—
      
269
  
Total assets, discontinued operations
   $
510
     $
2,534
  
                 
Other current liabilities, discontinued operations:
                
Accounts payable
   $
230
     $
1,341
  
Accrued expenses and other current liabilities
    
228
      
785
  
Total other current liabilities, discontinued operations
   $
458
     $
2,126
  
   
Year Ended
  
   
May 27, 2018
    
May 28, 2017
    
May 29, 2016
  
Revenues
   $
29,222
     $
62,481
     $
64,181
  
Cost of sales
    
(27,619
 )    
(58,507
 )    
(60,005
 )
Selling, general and administrative
    
(2,522
 )    
(3,137
 )    
(3,334
 )
Other
    
(269
 )    
—
      
—
  
(Loss) income from discontinued operations before taxes
    
(1,188
 )    
837
      
842
  
Income tax benefit (expense)
    
350
      
(295
 )    
(300
 )
(Loss) income from discontinued operations, net of tax
   $
(838
 )   $
542
     $
542