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Note 11 - Income Taxes (Details) - 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
Note 11 - Income Taxes (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Income Tax Expense (Benefit) | $ 11,878 | $ (2,317) | $ (9,922) | $ (5,304) | $ (286,468) | $ (1,733) | $ 604 | $ 633 | $ (5,665) | $ (286,964) | $ (9,360)
Deferred Tax Assets, Valuation Allowance | 635,305 |  |  |  | 642,003 |  |  |  | 635,305 | 642,003 |
Operating Loss Carryforwards |  |  |  |  |  |  |  |  |  |  | 1,500,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued | 300 |  |  |  | 400 |  |  |  | 300 | 400 |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense |  |  |  |  |  |  |  |  | (91) | (30) | 100
Unrecognized Tax Benefits, Period Increase (Decrease) |  |  |  |  |  |  |  |  | (200) |  |
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 1,100 |  |  |  | $ 1,100 |  |  |  | 1,100 | 1,100 |
Domestic Tax Authority [Member] |  |  |  |  |  |  |  |  |  |  |
Note 11 - Income Taxes (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Operating Income (Loss) |  |  |  |  |  |  |  |  | 3,700 | 57,800 | 0
Operating Loss Carryforwards | 1,500,000 |  |  |  |  |  |  |  | 1,500,000 |  |
State and Local Jurisdiction [Member] |  |  |  |  |  |  |  |  |  |  |
Note 11 - Income Taxes (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Operating Income (Loss) |  |  |  |  |  |  |  |  | 12,300 | 24,500 | 23,100
Income Tax Expense (Benefit) |  |  |  |  |  |  |  |  | 4,293 | $ (12,452) | $ 518
Operating Loss Carryforwards | $ 2,200,000 |  |  |  |  |  |  |  | $ 2,200,000 |  |
Earliest Tax Year [Member] |  |  |  |  |  |  |  |  |  |  |
Note 11 - Income Taxes (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Open Tax Year |  |  |  |  |  |  |  |  | 2011 |  |
Latest Tax Year [Member] |  |  |  |  |  |  |  |  |  |  |
Note 11 - Income Taxes (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Open Tax Year |  |  |  |  |  |  |  |  | 2014 |  |

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