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Note 11 - Income Taxes (Details Textual) - USD ($) $ in Thousands |  | 3 Months Ended | 10 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 22, 2017 | Oct. 31, 2018 | Jul. 31, 2018 | Apr. 30, 2018 | Jan. 31, 2018 | Oct. 31, 2017 | Jul. 31, 2017 | Apr. 30, 2017 | Jan. 31, 2017 | Oct. 31, 2018 | Oct. 31, 2018 | Oct. 31, 2017 | Oct. 31, 2016
Income Tax Expense (Benefit), Total |  | $ 1,939 | $ 1,104 | $ 245 | $ 338 | $ 464 | $ 287,036 | $ (1,017) | $ 466 |  | $ 3,626 | $ 286,949 | $ 5,255
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 35.00% |  |  |  |  |  |  |  |  | 21.00% | 21.00% | 35.00% | 35.00%
Revaluation of Deferred Tax Asset, Decrease |  |  |  |  |  |  |  |  |  |  | $ 298,500 |  |
Revaluation of Deferred Tax Liabilities, Decrease |  |  |  |  |  |  |  |  |  |  | 12,200 |  |
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability |  |  |  |  |  |  |  |  |  |  | 0 |  |
Deferred Tax Assets, Valuation Allowance, Total |  | 638,191 |  |  |  | 918,203 |  |  |  | $ 638,191 | 638,191 | $ 918,203 |
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total |  | 48,117 | 78 | (9,578) | (30,471) | 12,305 | (50,173) | (7,699) | 323 |  | 8,146 | (45,244) | $ 2,436
Gain (Loss) on Extinguishment of Debt, Total |  | (1,830) | $ (4,266) | $ (1,440) |  |  | $ (42,258) | $ (242) | $ 7,646 |  | (7,536) | $ (34,854) | (3,200)
Increase in Interest Incurred Per Year, Amount |  |  |  |  |  |  |  |  |  |  | 23,400 |  |
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Refunds on Previous Taxes Paid, Percent |  |  |  |  |  |  |  |  |  |  |  | (114.80%) |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total |  | 300 |  |  |  |  |  |  |  | 300 | 300 |  |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total |  |  |  |  |  |  |  |  |  |  | 41 | $ 45 | 2
Unrecognized Tax Benefits, Period Increase (Decrease), Total |  |  |  |  |  |  |  |  |  |  |  | 200 |
Unrecognized Tax Benefits that Would Impact Effective Tax Rate |  | 1,200 |  |  |  | $ 1,100 |  |  |  | 1,200 | 1,200 | 1,100 |
Domestic Tax Authority [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Income (Loss), Total |  |  |  |  |  |  |  |  |  |  | 0 | 0 | (4,400)
Income Tax Expense (Benefit), Total |  |  |  |  |  |  |  |  |  |  |  | 275,688 | 2,798
Domestic Tax Authority [Member] | Between 2028 and 2037 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Loss Carryforwards, Total |  | 1,600,000 |  |  |  |  |  |  |  | 1,600,000 | 1,600,000 |  |
Domestic Tax Authority [Member] | Indefinite Tax Period [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Loss Carryforwards, Total |  | 16,400 |  |  |  |  |  |  |  | 16,400 | 16,400 |  |
State and Local Jurisdiction [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Income (Loss), Total |  |  |  |  |  |  |  |  |  |  | (4,400) | (18,200) | (16,400)
Income Tax Expense (Benefit), Total |  |  |  |  |  |  |  |  |  |  | 3,626 | $ 11,261 | $ 2,457
State and Local Jurisdiction [Member] | Indefinite Tax Period [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Loss Carryforwards, Total |  | 43,300 |  |  |  |  |  |  |  | 43,300 | 43,300 |  |
State and Local Jurisdiction [Member] | Between 2019 and 2038 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Loss Carryforwards, Total |  | 2,500,000 |  |  |  |  |  |  |  | 2,500,000 | 2,500,000 |  |
State and Local Jurisdiction [Member] | Between 2019 and 2023 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Loss Carryforwards, Total |  | 145,300 |  |  |  |  |  |  |  | 145,300 | 145,300 |  |
State and Local Jurisdiction [Member] | Between 2024 and 2028 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Loss Carryforwards, Total |  | 691,200 |  |  |  |  |  |  |  | 691,200 | 691,200 |  |
State and Local Jurisdiction [Member] | Between 2029 and 2033 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Loss Carryforwards, Total |  | 1,300,000 |  |  |  |  |  |  |  | 1,300,000 | 1,300,000 |  |
State and Local Jurisdiction [Member] | Between 2034 and 2038 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Loss Carryforwards, Total |  | $ 320,000 |  |  |  |  |  |  |  | $ 320,000 | $ 320,000 |  |

X
- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to revisions of previously reported income tax expense related a federal specified liability loss refund. + References No definition available. + Details
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