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Subsequent Events	6 Months Ended
Subsequent Events	Nov. 30, 2015
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On December 14, 2015, our Board of Directors declared a quarterly cash dividend of $0.125 per common share. The dividend will be paid on January 8, 2016 to shareholders of record as of December 24, 2015. On December 2, 2015, we entered into Amendment Number One to Credit Agreement (the “Credit Agreement Amendment”) with J.P. Morgan Chase Bank, National Association, as administrative agent, J.P. Morgan Securities LLC, as sole bookrunner and sole lead arranger, and a syndicate of lenders. The Credit Agreement Amendment extended the maturity date of the Credit Agreement from November 18, 2016 to November 30, 2017.