Income Taxes (Details Textual) (USD $)	3 Months Ended	12 Months Ended
	Apr. 30, 2011	Oct. 31, 2011	Oct. 31, 2010	Oct. 31, 2009
Income Taxes (Textual) [Abstract]
Time period of forward tax losses		20 years
Operating Loss Carryforwards		$ 45,000,000
Federal income tax refunded	154,300,000		152,700,000
Recognized cumulative valuation allowances against state deferred tax assets		74,030,000	45,030,000
State tax deferred tax assets		$ 28,900,000
State taxes net of federal benefit, percentage		5.00%	5.00%	4.50%