Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Jul. 31, 2013	Apr. 30, 2013
Statement of Financial Position [Abstract]
Common stock, shares authorized	100,000,000	100,000,000
Common stock, no par value
Common stock, shares issued	31,855,965	31,675,965
Common stock, shares outstanding	31,855,965	31,675,965