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Defined Benefit Pension Plans - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2023	Oct. 31, 2022
Retirement Benefits [Abstract]
Employer contributions	$ 0	$ 0	$ 0	$ 0
Assumed as expected long-term rate of return (as a percent)			7.75%	7.75%

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- 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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
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- Definition

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

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