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Share Repurchase Plan (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2020	Aug. 31, 2019	Oct. 12, 2021
Equity, Class of Treasury Stock [Line Items]
Total cost of repurchased shares	$ 16,825	$ 29,625
Subsequent Events [Member]
Equity, Class of Treasury Stock [Line Items]
Share buy-back plan, amount authorized			$ 75,000

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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X

- Definition

The cash outflow to reacquire common stock during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585

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- Definition

Amount of stock repurchase plan authorized.

+ References

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