Stockholders' Deficiency (Details 2) (USD $)	3 Months Ended	6 Months Ended		9 Months Ended	12 Months Ended	207 Months Ended
	Apr. 30, 2011	Jan. 31, 2013	Jan. 31, 2012	Apr. 30, 2012	Jul. 31, 2012	Jan. 31, 2013
Net proceeds	$ 1,975,000	$ 1,450,000	$ 0	$ 1,975,000	$ 1,975,000	$ 17,755,000
Derivative warrant liability fair value		(624,797)			(1,811,746)	(624,797)
Make-whole payments liability		(202,500)			(540,000)	(202,500)
Deemed dividend		$ (102,297)			$ (376,746)