Earnings Per Common Share (Schedule Of Reconciliation Of Net Income To Net Income Available To Common Shareholders) (Details) - USD ($) $ in Thousands	3 Months Ended
	Nov. 30, 2019	Nov. 30, 2018
Earnings Per Common Share [Abstract]
Net income	$ 12,194	$ 13,279
Less: Net income allocated to participating securities	(67)	(87)
Net income available to common shareholders	$ 12,127	$ 13,192