8. STOCKHOLDERS EQUITY (Details) (USD $)	3 Months Ended
	Jul. 31, 2014
Stockholders Equity Details
Number of Warrants Outstanding, Beginning	2,762,466
Number of Warrants Exercised	(209,230)
Number of Warrants Outstanding, Ending	2,553,236
Weighted Average Exercise Price Outstanding, Beginning	$ 4.28
Weighted Average Exercise Price Exercised	$ 2.60
Weighted Average Exercise Price Outstanding, Ending	$ 4.41