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, 2021	Nov. 30, 2020
Earnings Per Common Share [Abstract]
Net income	$ 18,555	$ 23,623
Less: Net income allocated to participating securities	(64)	(110)
Net income available to common shareholders	$ 18,491	$ 23,513