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Accumulated Other Comprehensive Income (Loss) (Tables)
3 Months Ended
Aug. 31, 2015
Accumulated Other Comprehensive Income (Loss) (Tables) [Abstract]  
Schedule Of Accumulated Other Comprehensive Income (Loss)
   2015 2014
Foreign currency translation gain (loss):      
 Balance at beginning of period $ (253) $ 81
 Translation adjustments   (138)   (31)
 Balance at end of period   (391)   50
Retirement plans adjustments:      
 Balance at beginning of period   425   425
 Reclassifications from AOCI    (24)   (16)
 Balance at end of period   401   409
Accumulated other comprehensive income at end of period $ 10 $ 459
Reclassification Out Of Accumulated Other Comprehensive Income (Loss)
    Amount Reclassified from AOCI Affected Line Item in the Income Statement
    2015 2014  
         
          
 Amortization of retirement plans prior service credits $ 31 $ 26 Salaries and employee benefits
 Income tax benefit   (7)   (10) Provision for income taxes
AOCI reclassifications, net of tax $ 24 $ 16 Net income