Accumulated Other Comprehensive Loss - Reclassification out of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2024	Jul. 31, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Pension expense	$ 2,366	$ 1,593
Reclassification out of Accumulated Other Comprehensive Loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Pension expense	$ 2,000	$ 2,000