Pension Benefits (Tables)

3 Months Ended

Jul. 31, 2021

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, 2021 and 2020: 

	Three Months Ended
	July 31,
(in thousands)	2021		2020
Interest cost	$	1,349	$	1,165
Expected return on plan assets	(1,543)		(2,107)
Recognized net actuarial loss	499		440
Net periodic pension benefit	$	305	$	(502)