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Accumulated Other Comprehensive Income (Loss) (Tables)
3 Months Ended
Aug. 31, 2016
Accumulated Other Comprehensive Income (Loss) (Tables) [Abstract]  
Schedule Of Accumulated Other Comprehensive Income (Loss)
   2016 2015
Foreign currency translation loss:      
 Balance at beginning of period $ (514) $ (253)
 Translation adjustments   12   (138)
 Balance at end of period   (502)   (391)
Retirement plans adjustments:      
 Balance at beginning of period   345   425
 Reclassifications from AOCI    (19)   (24)
 Balance at end of period   326   401
Accumulated other comprehensive (loss) income at end of period $ (176) $ 10
Reclassification Out Of Accumulated Other Comprehensive Income (Loss)
    Amount Reclassified from AOCI Affected Line Item in the Income Statement
    2016 2015  
         
          
Amortization of retirement plans         
  prior service credits, before tax$ 30 $ 31 Salaries and employee benefits
Income tax benefit   (11)   (7) Provision for income taxes
           
AOCI reclassifications, net of tax $ 19 $ 24 Net income