Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2023	May 31, 2022	May 31, 2023	May 31, 2022
Income Taxes [Line Items]
Income tax expense	$ 8,851	$ 10,483	$ 22,320	$ 16,696
Estimated annual effective income tax rate			30.70%	28.20%
Tax benefit related to vesting of share based compensation awards			$ 800	$ 1,400