Basis Of Presentation (Narrative) (Details) $ in Thousands	9 Months Ended
	May 31, 2017 USD ($) country item	Feb. 28, 2017 USD ($)
Basis Of Presentation [Abstract]
Number of areas of expertise	7
Number of important distinguishing characteristics from competitors	4
Number of countries in which entity operates | country	150
Fair value of other long-term liabilities | $	$ 0	$ 0