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Pension Plans (Tables)
3 Months Ended
Aug. 31, 2021
Retirement Benefits [Abstract]  
Components of Net Periodic Benefit Cost
The components of net periodic pension benefit are summarized as follows for the three months ended August 31:
(In thousands)20212020
Interest cost$542 $512 
Expected return on assets(917)(731)
Amortization of net loss— 56 
Net periodic pension benefit$(375)$(163)