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Basis Of Presentation And Summary Of Significant Accounting Policies (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Feb. 28, 2022	Feb. 28, 2021	Feb. 28, 2022	Feb. 28, 2021	Aug. 31, 2021
Basis of Presentation and Summary of Significant Accounting Policies [Line Items]
Realized foreign currency transactions	$ 0	$ 0	$ 0	$ 0
Unrealized foreign currency transactions			110,000	$ (139,000)
Carrying value of senior notes	112,809,000		112,809,000		$ 114,940,000
Assets	423,146,000		423,146,000		430,203,000
Liabilities	224,296,000		$ 224,296,000		229,821,000
Minimum [Member]
Basis of Presentation and Summary of Significant Accounting Policies [Line Items]
Useful lives of internal use software and capitalized cloud computing implementation costs			3 years
Useful lives of major information systems installations estimated period of use			5 years
Maximum [Member]
Basis of Presentation and Summary of Significant Accounting Policies [Line Items]
Useful lives of internal use software and capitalized cloud computing implementation costs			5 years
Foreign Currency Forward Contracts [Member]
Basis of Presentation and Summary of Significant Accounting Policies [Line Items]
Foreign currency forward contracts outstanding	4,500,000		$ 4,500,000
Foreign currency forward contracts, Maturity date			Mar. 30, 2022
Unrealized foreign currency transactions			$ 0		$ 0
Level 2 [Member] | Recurring [Member]
Basis of Presentation and Summary of Significant Accounting Policies [Line Items]
Assets	0		0
Liabilities	0		0
Level 2 [Member] | Nonrecurring [Member]
Basis of Presentation and Summary of Significant Accounting Policies [Line Items]
Assets	0		0
Liabilities	0		0
Senior Notes [Member] | Level 2 [Member]
Basis of Presentation and Summary of Significant Accounting Policies [Line Items]
Fair value of senior notes	64,800,000		64,800,000
Carrying value of senior notes	$ 68,800,000		$ 68,800,000

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