Summary of Significant Accounting Policies - Net Loss Per Share (Details Narrative)	3 Months Ended		9 Months Ended		3 Months Ended	6 Months Ended		9 Months Ended
	Jan. 31, 2013 Stock Options	Jan. 31, 2012 Stock Options	Jan. 31, 2013 Stock Options	Jan. 31, 2012 Stock Options	Jan. 31, 2012 Warrant	Oct. 31, 2012 Warrant	Oct. 31, 2011 Warrant	Jan. 31, 2012 Warrant
Anti-dilutive securities not included in diluted net loss per common share computation	1,781,450	1,781,450	2,049,000	2,049,000	1,331,250	1,331,250	1,331,250	1,331,250