Defined Benefit Pension Plans - Pension Expenses (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Oct. 31, 2023	Oct. 31, 2023
Retirement Benefits [Abstract]
Service cost	$ 0	$ 0
Interest cost	223	447
Expected return on plan assets	(328)	(656)
Recognition of net loss	145	290
Net periodic pension expense	$ 40	$ 81

No definition available.

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Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.

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Amount of cost recognized for passage of time related to defined benefit plan.

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Amount of net periodic benefit cost (credit) for defined benefit plan.

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Amount of gain (loss) recognized in net periodic benefit (cost) credit from settlement and curtailment.

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Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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