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Earnings Per Share - Reconciliation of Shares Used in Computation of Basic and Diluted Earnings Per Common Share (Detail) - shares
shares in Thousands

12 Months Ended

Aug. 31, 2025

Aug. 31, 2024

Aug. 31, 2023

Earnings Per Share Disclosure [Line Items]

Weighted average basic common shares outstanding

31,171

31,102

31,983

Dilutive effect of restricted stock units

^[1]

968

916

992

Weighted average diluted common shares outstanding

32,139

32,363

33,799

2.875% Convertible senior notes, due 2024

Earnings Per Share Disclosure [Line Items]

Dilutive effect of convertible notes

^[2]

345

824

[1]	Restricted stock units subject to performance criteria, for which actual levels of performance above target have been achieved, are included in weighted average diluted common shares outstanding when the Company is in a net earnings position.
[2]	The 2.875% Convertible notes due 2024 were retired on February 1, 2024.

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Earnings Per Share Disclosure [Line Items]

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible debt securities using the if-converted method.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
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-Name Accounting Standards Codification
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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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