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Note 11 - Income Taxes (Details) - Provision for Income Taxes - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Oct. 31, 2015
Jul. 31, 2015
Apr. 30, 2015
Jan. 31, 2015
Oct. 31, 2014
Jul. 31, 2014
Apr. 30, 2014
Jan. 31, 2014
Oct. 31, 2015
Oct. 31, 2014
Oct. 31, 2013
Current income tax (benefit) expense:                      
Federal (1) [1]                 $ (1,497) $ (1,690) $ (9,878)
State (2) [2]                 523 2,466 518
Total current income tax (benefit) expense:                 (974) 776 (9,360)
Federal                 (8,461) (272,822)  
State                 3,770 (14,918)  
Total deferred income tax (benefit):                 (4,691) (287,740)  
Total $ 11,878 $ (2,317) $ (9,922) $ (5,304) $ (286,468) $ (1,733) $ 604 $ 633 $ (5,665) $ (286,964) $ (9,360)
[1] The current federal income tax (benefit) expense is net of the use of federal net operating losses totaling $3.7 million, $57.8 million and $0.0 million for the years ended October 31, 2015, 2014 and 2013, respectively.
[2] The current state income tax (benefit) expense is net of the use of state net operating losses totaling $12.3 million, $24.5 million and $23.1 million for the years ended October 31, 2015, 2014 and 2013, respectively.