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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, 2019 | Jul. 31, 2019 | Apr. 30, 2019 | Jan. 31, 2019 | Oct. 31, 2018 | Jul. 31, 2018 | Apr. 30, 2018 | Jan. 31, 2018 | Jul. 31, 2017 | Oct. 31, 2018 | Oct. 31, 2019 | Oct. 31, 2018 | Oct. 31, 2017
Income Tax Expense (Benefit), Total |  | $ 1,221 | $ 537 | $ 345 | $ 346 | $ 1,939 | $ 1,104 | $ 245 | $ 338 |  |  | $ 2,449 | $ 3,626 | $ 286,949
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 35.00% |  |  |  |  |  |  |  |  |  | 21.00% | 21.00% | 21.00% | 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 |  | 623,220 |  |  |  | 638,191 |  |  |  |  | $ 638,191 | $ 623,220 | 638,191 |
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total |  | (586) | (7,064) | (14,912) | (17,106) | 48,117 | 78 | (9,578) | (30,471) | $ (50,200) |  | (39,668) | 8,146 | $ (45,244)
Gain (Loss) on Extinguishment of Debt, Total |  | (42,436) |  |  |  | (1,830) | $ (4,266) | $ (1,440) |  | $ (42,300) |  | (42,436) | (7,536) | (34,854)
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total |  | 400 |  |  |  | 300 |  |  |  |  | 300 | 400 | 300 |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total |  |  |  |  |  |  |  |  |  |  |  | 32 | 41 | 45
Unrecognized Tax Benefits, Period Increase (Decrease), Total |  |  |  |  |  |  |  |  |  |  |  | (200) |  |
Unrecognized Tax Benefits that Would Impact Effective Tax Rate |  | 900 |  |  |  | $ 1,200 |  |  |  |  | $ 1,200 | 900 | 1,200 |
Domestic Tax Authority [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Income (Loss), Total |  |  |  |  |  |  |  |  |  |  |  | 800 |  |
Income Tax Expense (Benefit), Total |  |  |  |  |  |  |  |  |  |  |  |  |  | 275,688
Open Tax Year |  |  |  |  |  |  |  |  |  |  |  | 2015 2016 2017 2018 |  |
Domestic Tax Authority [Member] | Between 2028 and 2037 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Loss Carryforwards, Total |  | 1,600,000 |  |  |  |  |  |  |  |  |  | $ 1,600,000 |  |
Domestic Tax Authority [Member] | Indefinite Tax Period [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Loss Carryforwards, Total |  | 16,500 |  |  |  |  |  |  |  |  |  | 16,500 |  |
State and Local Jurisdiction [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Income (Loss), Total |  |  |  |  |  |  |  |  |  |  |  | (1,300) | (4,400) | (18,200)
Income Tax Expense (Benefit), Total |  |  |  |  |  |  |  |  |  |  |  | 2,449 | $ 3,626 | $ 11,261
State and Local Jurisdiction [Member] | Indefinite Tax Period [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Loss Carryforwards, Total |  | 62,300 |  |  |  |  |  |  |  |  |  | 62,300 |  |
State and Local Jurisdiction [Member] | Between 2019 and 2038 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Loss Carryforwards, Total |  | 2,500,000 |  |  |  |  |  |  |  |  |  | 2,500,000 |  |
State and Local Jurisdiction [Member] | Between 2020 and 2024 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Loss Carryforwards, Total |  | 211,400 |  |  |  |  |  |  |  |  |  | 211,400 |  |
State and Local Jurisdiction [Member] | Between 2025 and 2029 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Loss Carryforwards, Total |  | 1,200,000 |  |  |  |  |  |  |  |  |  | 1,200,000 |  |
State and Local Jurisdiction [Member] | Between 2030 and 2034 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Loss Carryforwards, Total |  | 758,900 |  |  |  |  |  |  |  |  |  | 758,900 |  |
State and Local Jurisdiction [Member] | Between 2035 and 2039 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Loss Carryforwards, Total |  | $ 274,500 |  |  |  |  |  |  |  |  |  | $ 274,500 |  |

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