Inventories (Tables)

12 Months Ended

Apr. 30, 2020

Inventory Disclosure [Abstract]

Components Of Inventories

The components of inventories were:

	APRIL 30
(in thousands)	2020			2019
Raw materials	$	51,460		$	46,054
Work-in-process	42,381			43,794
Finished goods	32,572			34,873
Total FIFO inventories	126,413			124,721
Reserve to adjust inventories to LIFO value	(14,577		)	(16,193		)
Total inventories	$	111,836		$	108,528