CONSOLIDATED BALANCE SHEETS [Parenthetical] (USD $)	Oct. 31, 2012	Oct. 31, 2011
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	41,862,321	41,307,349
Common stock, shares outstanding	41,862,321	41,307,349