Inventories (Tables)

3 Months Ended

Jul. 31, 2012

Inventories [Abstract]

Inventories

Inventories consisted of the following:

	July 31,		April 30,
	2012		2012
(Amounts in thousands)
Raw materials and subassemblies	$	1,422	$	1,775
Work-in-process		61		63
Finished goods		626		821
	$	2,109	$	2,659