XML 57 R39.htm IDEA: XBRL DOCUMENT v3.10.0.1
Basis Of Presentation And Summary Of Significant Accounting Policies (Goodwill) (Narrative) (Details) - USD ($)
3 Months Ended 12 Months Ended
Feb. 28, 2018
Aug. 31, 2018
Aug. 31, 2017
Aug. 31, 2016
Basis Of Presentation And Summary Of Significant Accounting Policies [Abstract]        
Impairment of goodwill $ 0 $ 0 $ 0 $ 0