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Defined Benefit Pension Plans (Tables)
3 Months Ended
Jul. 31, 2023
Retirement Benefits [Abstract]  
Pension Expenses
Pension expense consisted of the following (in thousands):
Three Months Ended
July 31, 2023July 31, 2022
Service cost$— $— 
Interest cost224 322 
Expected return on plan assets(328)(535)
Recognition of net loss145 240 
Net periodic pension expense$41 $27