Inventories (Tables)

9 Months Ended

Jan. 31, 2013

Inventories [Abstract]

Inventories

Inventories consisted of the following:

	January 31,		April 30,
	2013		2012
(Amounts in thousands)
Raw materials and subassemblies	$	1,081	$	1,775
Work-in-process		3		63
Finished goods		486		821
	$	1,570	$	2,659