Income Taxes (Details Textual) (USD $)	3 Months Ended		12 Months Ended
	Jan. 31, 2013	Jan. 31, 2012	Oct. 31, 2012
Income Taxes (Textual) [Abstract]
State taxes net of federal benefit, percentage	6.40%	6.50%
Income Tax Reconciliation Decrease in Deferred Tax Assets Valuation Allowance	$ 216,000	$ 2,843,000	$ 394,718,000
Recognized cumulative valuation allowances against state deferred tax assets	$ 56,800,000		$ 57,000,000
Number of states	19