Inventories

12 Months Ended

Apr. 30, 2021

Inventory Disclosure [Abstract]

Inventories

Inventories

The components of inventories were:

	APRIL 30
(in thousands)	2021		2020
Raw materials	$	63,384	$	51,460
Work-in-process	51,176		42,381
Finished goods	43,526		32,572
Total FIFO inventories	158,086		126,413
Reserve to adjust inventories to LIFO value	(17,804)		(14,577)
Total inventories	$	140,282	$	111,836

Of the total inventory of $140.3 million, $80.3 million is carried under the FIFO method and $60.0 million is carried under the LIFO method of accounting as of April 30, 2021. Of the total inventory of $111.8 million, $66.0 million is carried under the FIFO method and $45.8 million is carried under the LIFO method of accounting as of April 30, 2020.