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Retirement Plans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2025	Jan. 31, 2024
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 130	$ 134	$ 434	$ 400
Interest cost	7,177	6,963	21,348	20,782
Expected return on plan assets	(6,937)	(7,458)	(20,788)	(22,347)
Amortization of prior service cost	(23)	(24)	(64)	(71)
Amortization of net actuarial loss	2,103	2,046	6,193	6,072
Curtailment/settlement (credit)	0	0	(180)	0
Net pension expense	$ 2,450	$ 1,661	$ 6,943	$ 4,836

X

- Definition

Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.

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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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