Stockholders' Equity (Shares Available for Grant) (Details)	12 Months Ended
	Aug. 31, 2021 shares
Reconciliation of Shares Available to be Issued [Roll Forward]
Balance as of beginning of period (in shares)	10,609,508
Shares authorized (in shares)	2,233,503
Restricted stock units granted, net of forfeitures (in shares)	(1,861,711)
Balance as of end of period (in shares)	10,981,300