Inventories (Tables)

12 Months Ended

Jul. 31, 2012

Inventories [Abstract]

Inventories

	2012			2011
Raw materials and purchased components	$	1,151		$	1,612
Work in process		894			291
Finished goods		5,355			5,797
Total		7,400			7,700
Inventory obsolescence reserve		(2,139	)		(2,184	)
Total inventories	$	5,261		$	5,516