Inventories (Tables)

9 Months Ended

Jan. 31, 2023

Inventory, Net [Abstract]

Components of Inventories

The components of inventories were: 

	January 31,		April 30,
(in thousands)	2023		2022
Raw materials	$	105,733	$	90,451
Work-in-process	54,212		59,180
Finished goods	64,818		78,628
Total inventories	$	224,763	$	228,259