Compensation period preceding retirement and termination.

No definition available.

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- Definition

Employees covered under non contributory pension plan.

+ References

No definition available.

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- Definition

Period used to average discount rate.

+ References

No definition available.

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- Definition

Amount of liability, recognized in statement of financial position, for defined benefit pension plan, classified as noncurrent. Excludes other postretirement benefit plan.

+ References

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- 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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- Definition

Amount of contribution expected to be received by defined benefit plan from employer in remainder of current fiscal year. Excludes contribution previously paid by employer in current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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- Definition

Amount of cost for employer contribution required to be made in future period to multiemployer pension plan determined to be individually significant. Includes, but is not limited to, employer contribution required by collective-bargaining arrangement (CBA), statutory obligation, and other contractual obligation.

+ References

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Pension Plan - Additional Information (Detail) - USD ($)		6 Months Ended
	Feb. 28, 2021	Aug. 31, 2020	Feb. 29, 2020
Defined Benefit Plan Disclosure [Line Items]
Employees covered under noncontributory Pension Plan		18.00%
Compensation period preceding retirement and termination		5 years
Period used for calculating Pension Plan liability		25 years
Unfunded pension liability		$ 8,936,000	$ 8,936,000
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected contributions		1,500,000
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected contributions		$ 3,000,000.0
Scenario Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Minimum required contribution to the plan	$ 0