Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jan. 31, 2012	Jan. 31, 2011
Reconciliation of Company's effective tax rate from federal statutory rate
Federal tax (benefit) provision at statutory rate	$ (2,243)	$ (5,966)
State taxes, net of federal benefit	(271)	(554)
Reversal of state tax provisions- finalization of audits		(2,340)
Increase in unrecognized tax benefits	1,500
Reversal of accrual for uncertain tax positions	(5,279)	(17,954)
Increase in deferred tax assets-net	(525)
Valuation allowance - recognized	4,089	7,027
Valuation allowance - reversed	(2,843)	(1,260)
Accrued interest on anticipated tax assessments	1,950	813
Other		(230)
Income tax benefit	$ (3,622)	$ (20,464)
Federal tax (benefit) provision at statutory rate, percentage	(35.00%)	(35.00%)
State taxes net of federal benefit, percentage	(4.20%)	(3.30%)
Reversal of state tax provisions- finalization of audits, percentage		(13.70%)
Increase in unrecognized tax benefits, percentage	23.40%
Reversal of accrual for uncertain tax positions, percentage	(82.40%)	(105.30%)
Increase in deferred tax assets-net, percentage	(8.20%)
Valuation allowance - recognized, percentage	63.80%	41.20%
Valuation allowance - reversed, percentage	(44.30%)	(7.40%)
Accrued interest on anticipated tax assessments, percentage	30.40%	4.80%
Other, percentage		(1.30%)
Tax provision (benefit), percentage	(56.50%)	(120.00%)