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Retirement Plans (Tables)
9 Months Ended
Jan. 31, 2023
Retirement Benefits [Abstract]  
Schedule of Net Benefit Costs
The components of net pension income for our defined benefit plans were as follows:
Three Months Ended
January 31,
Nine Months Ended
January 31,
2023202220232022
Service cost$218 $291 $610 $898 
Interest cost6,264 5,122 18,447 15,523 
Expected return on plan assets(8,281)(9,986)(24,703)(30,387)
Amortization of prior service cost(23)(23)(70)(67)
Amortization of net actuarial loss1,602 1,858 4,593 5,632 
Net pension income$(220)$(2,738)$(1,123)$(8,401)