Exploration Stage Company (Detail) (USD $)	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended					67 Months Ended
	Oct. 31, 2008	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010	Oct. 31, 2009	Apr. 30, 2014
Operating loss since inception	$ (12)	$ (528,797)	$ (445,945)	$ (183,649)	$ (975,613)	$ (1,289,689)	$ (3,531,780)	$ (4,777,291)	$ (981,396)	$ (89,397)	$ (10,853,214)