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Defined Benefit Pension Plans - Additional Information (Detail) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
	Oct. 31, 2023	Oct. 31, 2023	Apr. 30, 2024
Retirement Benefits [Abstract]
Remaining pension plan liabilities			$ 17,800,000
Employer contributions	$ 0	$ 0	$ 287,000
Assumed as expected long-term rate of return (as a percent)		7.75%

X

- Definition

Defined Benefit Plan, Benefit Obligation, Remaining Pension Plan Liabilities

+ References

No definition available.

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- Definition

Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-8

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- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

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