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Earnings Per Common Share (Schedule Of Reconciliation Of Net Income To Net Income Available To Common Shareholders) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Feb. 28, 2022
Nov. 30, 2021
Feb. 28, 2021
Nov. 30, 2020
Feb. 28, 2022
Feb. 28, 2021
Earnings Per Common Share [Abstract]            
Net income $ 19,508 $ 18,555 $ 17,191 $ 23,623 $ 38,063 $ 40,814
Less: Net income allocated to participating securities (73)   (64)   (137) (174)
Net income available to common shareholders $ 19,435   $ 17,127   $ 37,926 $ 40,640