SCHEDULE 11 - VALUATION OF QUALIFYING ACCOUNTS

12 Months Ended

Apr. 30, 2012

Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]

Description	Balance at Beginning  of period		Charged to expense		Charged to deferred revenue		Deductions			Balance at end of period
Valuation reserve for trade and other receivables, and unbilled amounts
Year ended April 30, 2010	$	51,000	$	20,000	$	202,000	$	(51,000	)	$	222,000
Year ended April 30, 2011	$	222,000	$	—	$	—	$	(110,000	)	$	112,000
Year ended April 30, 2012	$	112,000	$	—	$	—	$	(1,000	)	$	111,000