v3.25.2
Retirement Plans - Components of Net Pension Expense (Income) and Weighted-Average Assumptions (Details) - USD ($)
$ in Thousands
 12 Months Ended
Apr. 30, 2025
Apr. 30, 2024
Apr. 30, 2023
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Curtailment/settlement (credit) $ 200    
US      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Service cost 0 $ 0 $ 0
Interest cost 12,133 11,654 11,242
Expected return on plan assets (9,610) (10,372) (9,924)
Amortization of prior service cost (154) (154) (154)
Amortization of net actuarial loss 2,314 2,446 2,295
Curtailment/settlement (credit) 0 0 0
Net pension expense (income) $ 4,683 $ 3,574 $ 3,459
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]      
Discount rate 5.80% 5.10% 4.60%
Expected return on plan assets 5.80% 5.80% 5.00%
Non-US      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Service cost $ 560 $ 532 $ 796
Interest cost 16,603 16,069 13,389
Expected return on plan assets (18,449) (19,443) (23,134)
Amortization of prior service cost 66 60 60
Amortization of net actuarial loss 6,058 5,656 3,851
Curtailment/settlement (credit) (181) 0 (1,828)
Net pension expense (income) $ 4,657 $ 2,874 $ (6,866)
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]      
Discount rate 5.10% 4.80% 3.00%
Rate of compensation increase 3.00% 3.00% 3.10%
Expected return on plan assets 6.20% 6.40% 5.50%