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Pension Plans (Tables)
3 Months Ended
Aug. 31, 2020
Retirement Benefits [Abstract]  
Components of Net Periodic Pension Benefit
The components of net periodic pension benefit are summarized as follows for the three months ended August 31:
(In thousands)20202019
Interest cost$512 $720 
Expected return on assets(731)(740)
Amortization of net loss56 — 
Net periodic pension benefit$(163)$(20)