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Retirement Plans - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Retirement Benefits [Abstract]
Curtailment settlement due to cross knowledge pension plan	$ 180	$ 0	$ 180	$ 0
Employer defined benefit pension plan contributions	3,900	3,600	7,500	7,700
Defined contribution plan expense	$ 5,100	$ 6,700	$ 12,400	$ 14,400

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

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