Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2023	Aug. 31, 2022	Aug. 31, 2021
Allowance For Doubtful Accounts [Member]
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	$ 4,118	$ 3,422	$ 2,780
Charges to costs and expenses	881	903	771
Charged to other accounts	0	0	0
Deductions	(49)	207	129
Balance at end of period	5,048	4,118	3,422
Deferred Tax Asset Valuation Allowance [Member]
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	1,203	1,091	3,218
Charges to costs and expenses	0	0	206
Charged to other accounts	0	112	0
Deductions	(712)	0	2,333
Balance at end of period	$ 491	$ 1,203	$ 1,091