Summary of Significant Accounting Policies New Accounting Pronouncements (Details) - USD ($) $ in Thousands	Aug. 31, 2023	Aug. 31, 2022
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating Lease, Right-of-Use Asset	$ 37,714	$ 43,273
Retained Earnings (Accumulated Deficit) [Abstract]
Retained earnings	$ 1,011,112	$ 966,751