Pension Plans (Tables)

9 Months Ended

Feb. 29, 2020

Retirement Benefits [Abstract]

Components of Net Periodic Benefit Cost

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

	Three Months Ended				Nine Months Ended
(In thousands)	February 29, 2020		February 28, 2019		February 29, 2020		February 28, 2019
Interest cost	$	720	$	781	$	2,161	$	2,343
Expected return on assets	(740)		(720)		(2,221)		(2,161)
Net periodic benefit cost	$	(20)	$	61	$	(60)	$	182