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Schedule II - Valuation and Qualifying Accounts (Tables)
12 Months Ended
May 31, 2016
Notes Tables  
Summary of Allowance for Doubtful Accounts and Revenue Adjustments [Table Text Block]
           
Charged/
   
Charged/
                 
   
Balance at
   
(Credited)
   
(Credited)
                 
   
Beginning
   
to Costs
   
to other
           
Balance at
 
Description
 
of Period
   
and Expenses
   
Accounts
   
Write-offs
   
End of Period
 
Allowance for Doubtful Notes
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
                                         
Fiscal Year Ended
May 31, 2016
  $     $ 106     $     $     $ 106  
                                         
Fiscal Year Ended June 2, 2015
          (2 )           2        
                                         
Fiscal Year Ended June 3, 2014
    259       307             (566
)