Securities Purchase Agreement (Details Narrative) (USD $)	6 Months Ended
	Oct. 31, 2012	Oct. 31, 2011
Securities Purchase Agreement of May 11, 2011 (Textual) [Abstract]
Net proceeds from sale of common stock and warrants		$ 2,997,875
Securities Purchase Agreement 2011-05-11
Securities Purchase Agreement of May 11, 2011 (Textual) [Abstract]
Numer of common stock sold	1,775,000
Number of common stock called by warrants	1,331,250
Net proceeds from sale of common stock and warrants	$ 2,998,000
Combination of securities offered in Securities Purchase Agreement, description	The common stock and warrants were sold in fixed combinations, with each combination consisting of one share of common stock and 0.75 of one warrant, with each whole warrant exercisable for one share of common stock.
Purchase price per fixed combination	1.88
Description of period for exercisability of warrants	The warrants became exercisable six months and one day following the closing date of the Offering and will remain exercisable for five years thereafter.
Exercise price of warrants	2.26
Percentage of holding in common stock after which exercisability of warrant may be limited	4.99%
Right to call warrants for cancellation, description	After the one year anniversary of the initial exercise date of the warrants, the Company has the right to call the warrants for cancellation for $.001 per share in the event that the volume weighted average price of the Company's common stock for 20 consecutive trading days exceeds $4.52.