Inventories

12 Months Ended

Apr. 30, 2015

Inventory Disclosure [Abstract]

Inventories

Inventories

The components of inventories were:

	APRIL 30
(in thousands)	2015			2014
Raw materials	$	17,199		$	13,756
Work-in-process	18,095			19,179
Finished goods	14,797			13,439
Total FIFO inventories	50,091			46,374
Reserve to adjust inventories to LIFO value	(14,103		)	(14,851		)
Total LIFO inventories	$	35,988		$	31,523