Note 12 - Income Taxes (Detail) - Provision for Income Taxes (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012	Oct. 31, 2011	Jul. 31, 2011	Apr. 30, 2011	Jan. 31, 2011	Oct. 31, 2012		Oct. 31, 2011		Oct. 31, 2010
Federal									$ 277		$ (1,577)		$ (291,334)
State(1)									(35,328)	[1]	(3,924)	[1]	(6,536)	[1]
Total current income tax (benefit):									(35,051)		(5,501)		(297,870)
Total	$ 203	$ (36,493)	$ 536	$ 703	$ 580	$ (4,645)	$ (1,015)	$ (421)	$ (35,051)		$ (5,501)		$ (297,870)

[1] The current state income tax expense is net of the use of state net operating losses totaling $3.4 million, $0.5 million, and $0.4 million for the years ended October 31, 2012, 2011, and 2010, respectively.