Weighted Average Assumptions for Grants, Warrants (Details)	12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011
Stock Options And Warrants
Risk-free interest rate	0.72%	1.57%
Expected dividend yield	0.00%	0.00%
Expected stock price volatility	1.89%	3.68%
Expected life in years	1 year 8 months 12 days	2 years