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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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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.

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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Number of options outstanding, including both vested and non-vested options.

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Share-Based Compensation (Narrative) (Details) $ in Thousands	12 Months Ended
	Aug. 31, 2023 USD ($) Item shares	Aug. 31, 2022 USD ($) shares	Aug. 31, 2021 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-tax total unrecognized compensation cost related to nonvested share-based compensation \| $	$ 8,200
Weighted average period to be recognized	1 year 9 months 18 days
Outstanding stock options vested	19,617	47,222	38,954
Shares outstanding	118,470	97,140
Share withheld for payroll tax obligations \| $	$ 2,471	$ 1,181	$ 1,269
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Percentage vested per year	33.00%
Fair value vested \| $	$ 3,700	$ 4,100
Number of shares vested	24,342
Restricted Stock Units Settled In Cash [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding	4,039	4,412	4,656
Performance Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Number of shares vested	9,344		0
Performance Stock Units [Member] \| Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares vested	18,688	18,998
Performance Stock Units [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of awards actually earned	0.00%
Performance Stock Units [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of awards actually earned	2.00%
2015 Long-Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Plan effective date	Jan. 26, 2015
Maximum number of shares authorized	626,968
Number of shares available	217,146
Stock award ratio \| Item	1
2015 Long-Term Incentive Plan [Member] \| Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option expire, years	10 years
Vesting period	4 years
Non Employee Directors [Member] \| Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	9 months