Inventories (Tables)

3 Months Ended

Jul. 31, 2013

Inventory Disclosure [Abstract]

Summary of Inventories

Inventories consisted of the following (in thousands):

	July 31, 2013		April 30, 2013
Finished products	$	3,208	$	4,052
Work in process		1,719		1,678
Raw materials		7,407		7,473
	$	12,334	$	13,203