Note 6 - Net Income Per Share (Details) - Basic and diluted income per share (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Apr. 30, 2013
Basic and diluted income per share [Abstract]
Net (loss) income (in Dollars)	$ 264	$ (161)	$ 1,683
Weighted average common shares outstanding – basic	3,894	3,885
Effect of dilutive options outstanding	50
Weighted average common shares outstanding – diluted	3,944	3,885