Pension Benefits (Tables)

3 Months Ended

Jul. 31, 2020

Pension and Other Postretirement Benefits Cost (Reversal of Cost) [Abstract]

Net Periodic Pension (Benefit) Cost

Net periodic pension benefit cost consisted of the following for the three-month periods ended July 31, 2020 and 2019: 

	Three Months Ended
	July 31,
(in thousands)	2020		2019
Interest cost	$	1,165	$	1,493
Expected return on plan assets	(2,107)		(2,081)
Recognized net actuarial loss	440		423
Net periodic pension benefit	$	(502)	$	(165)