Pension Plans (Tables)

9 Months Ended

Feb. 28, 2021

Retirement Benefits [Abstract]

Components of Net Periodic Benefit Cost

The components of net periodic pension benefit are summarized as follows:

	Three Months Ended				Nine Months Ended
(In thousands)	February 28, 2021		February 29, 2020		February 28, 2021		February 29, 2020
Interest cost	$	512	$	720	$	1,537	$	2,161
Expected return on assets	(731)		(740)		(2,193)		(2,221)
Amortization of net loss	56		—		167		—
Net periodic pension benefit	$	(163)	$	(20)	$	(489)	$	(60)