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Retirement Plans
 6 Months Ended
Oct. 31, 2023
Retirement Benefits [Abstract]  
Retirement Plans Retirement Plans
The components of net pension expense (income) for our defined benefit plans were as follows:
Three Months Ended
October 31, 		Six Months Ended
October 31,
2023202220232022
Service cost$132 $192 $266 $392 
Interest cost6,872 5,994 13,819 12,183 
Expected return on plan assets(7,398)(8,038)(14,889)(16,422)
Amortization of prior service cost(24)(24)(47)(47)
Amortization of net actuarial loss2,000 1,467 4,026 2,991 
Net pension expense (income)$1,582 $(409)$3,175 $(903)
The service cost component of net pension expense (income) is reflected in Operating and administrative expenses on our Unaudited Condensed Consolidated Statements of Net (Loss) Income. The other components of net pension expense (income) are reported separately from the service cost component and below Operating income. Such amounts are reflected in Other (expense) income, net on our Unaudited Condensed Consolidated Statements of Net (Loss) Income.
Employer defined benefit pension plan contributions were $3.6 million and $7.7 million for the three and six months ended October 31, 2023, respectively, and $3.5 million and $7.4 million for the three and six months ended October 31, 2022, respectively.
Defined Contribution Savings Plans
The expense for employer defined contribution savings plans was $6.7 million and $14.4 million for the three and six months ended October 31, 2023, respectively, and $6.8 million and $15.6 million for the three and six months ended October 31, 2022, respectively.