Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Jan. 31, 2013	Jan. 31, 2012	Oct. 31, 2012
Reconciliation of Company's effective tax rate from federal statutory rate
Federal tax (benefit) provision at statutory rate	$ 2,914	$ (2,243)
State taxes, net of federal benefit	346	(271)
Increase in unrecognized tax benefits		1,500
Reversal of accrual for uncertain tax positions		(5,279)
Income Tax Reconciliation Increase in Deferred Tax Assets Net		(525)
Valuation allowance - recognized		4,089
Valuation allowance - reversed	(216)	(2,843)	(394,718)
Accrued interest on anticipated tax assessments	1,166	1,950
Other	(316)
Income tax provision (benefit)	$ 3,894	$ (3,622)
Federal tax (benefit) provision at statutory rate, percentage	35.00%	35.00%
State taxes net of federal benefit, percentage	4.20%	4.20%
Effective Income Tax Rate Reconciliation Increase In Unrecognized Tax Benefit		23.40%
Reversal of accrual for uncertain tax positions, percentage		82.40%
Effective Income Tax Rate Reconciliation In Deferred Tax Assets		8.20%
Valuation allowance - recognized, percentage		(63.80%)
Valuation allowance - reversed, percentage	(2.60%)	44.30%
Accrued interest on anticipated tax assessments, percentage	14.00%	(30.40%)
Other, percentage	(3.80%)
Tax provision (benefit), percentage	46.80%	56.50%