Description of Business and Significant Accounting Policies - Liquidity and Basis of Presentation (Details Narrative) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011
Description Of Business And Significant Accounting Policies - Liquidity And Basis Of Presentation Details Narrative
Net loss	$ (338,192)	$ (1,247,757)	$ (1,219,822)	$ (2,223,474)	$ (4,625,000)	$ (3,259,000)	$ (4,634,000)
Liquidity disclosure	Management projects the Company currently has sufficient cash and borrowing availability to last into the fiscal quarter ending April 30, 2014. The Company intends to raise additional capital through bank financing and additional sales of equity and/or debt securities in the current fiscal year, which should provide sufficient cash and borrowing availability through April 30, 2014. There can be no assurance that the Company will be successful in raising sufficient cash to meet its obligations through fiscal 2014.				Management believes that the aggregate $3,500,000 available under its credit facility combined with current projected losses will not be sufficient to meet its current obligations and the Company will need to raise additional capital through borrowings or sales of equity securities. There can be no assurance that the Company will be able to obtain additional borrowings or complete a sale of additional equity securities.