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Defined Benefit Pension Plans
 6 Months Ended
Oct. 31, 2020
Retirement Benefits [Abstract]  
Defined Benefit Pension Plans Defined Benefit Pension PlansThe Company has non-contributory defined benefit pension plans covering substantially all domestic salaried and hourly employees. These plans were amended as of April 30, 2005; no further benefits have been, or will be, earned under the plans, subsequent to the amendment date, and no additional participants will be added to the plans. There were no Company contributions paid to the plans during the three and six months ended October 31, 2020 and 2019. The Company currently expects to contribute $30,000 to the plans during the remainder of the fiscal year. The Company assumed an expected long-term rate of return of 7.75% for the periods ended October 31, 2020 and October 31, 2019. Pension expense consisted of the following (in thousands):
Three Months Ended October 31, 2020Three Months Ended October 31, 2019
Service cost$0 $0 
Interest cost181 208 
Expected return on plan assets(321)(355)
Recognition of net loss429 260 
Net periodic pension expense$289 $113 
Six Months Ended October 31, 2020Six Months Ended October 31, 2019
Service cost$0 $0 
Interest cost362 416 
Expected return on plan assets(642)(710)
Recognition of net loss857 520 
Net periodic pension expense$577 $226