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Note 16 - Income Taxes (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Jul. 31, 2022 | Jul. 31, 2021 | Apr. 30, 2021 | Jul. 31, 2022 | Jul. 31, 2021 | Oct. 31, 2021 | Oct. 31, 2020
Income Tax Expense (Benefit), Total | $ 29,313 | $ 14,097 |  | $ 58,416 | $ (442,921) |  |
Deferred Tax Assets, Net, Total | 376,600 |  |  | 376,600 |  |  |
Deferred Tax Assets, Valuation Allowance, Total | 80,600 |  |  | 80,600 |  |  |
Contract Backlog | 1,800 |  |  | 1,800 |  |  |
Federal Deferred Tax Assets Related to NOLs and Other Matters [Member] |  |  |  |  |  |  |
Deferred Tax Assets, Valuation Allowance, Total |  |  |  |  |  |  | $ 396,500
Deferred Tax Assets Related to State NOLs [Member] |  |  |  |  |  |  |
Deferred Tax Assets, Valuation Allowance, Total |  |  |  |  |  | $ 101,600 | $ 181,000
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount |  |  | $ (78,100) |  |  |  |
Domestic Tax Authority [Member] |  |  |  |  |  |  |
Income Tax Expense (Benefit), Total | 22,928 | 12,621 |  | 46,901 | (353,649) |  |
Domestic Tax Authority [Member] | Between 2029 and 2038 [Member] |  |  |  |  |  |  |
Operating Loss Carryforwards | 1,000,000 |  |  | 1,000,000 |  |  |
Domestic Tax Authority [Member] | Indefinite Tax Period [Member] |  |  |  |  |  |  |
Operating Loss Carryforwards | 15,700 |  |  | 15,700 |  |  |
State and Local Jurisdiction [Member] |  |  |  |  |  |  |
Income Tax Expense (Benefit), Total | 6,385 | $ 1,476 |  | 11,515 | $ (89,272) |  |
Operating Loss Carryforwards | 2,400,000 |  |  | 2,400,000 |  |  |
State and Local Jurisdiction [Member] | Indefinite Tax Period [Member] |  |  |  |  |  |  |
Operating Loss Carryforwards | 53,900 |  |  | 53,900 |  |  |
State and Local Jurisdiction [Member] | Between 2022 and 2026 [Member] |  |  |  |  |  |  |
Operating Loss Carryforwards | 229,800 |  |  | 229,800 |  |  |
State and Local Jurisdiction [Member] | Between 2027 and 2031 [Member] |  |  |  |  |  |  |
Operating Loss Carryforwards | 1,500,000 |  |  | 1,500,000 |  |  |
State and Local Jurisdiction [Member] | Between 2032 and 2036 [Member] |  |  |  |  |  |  |
Operating Loss Carryforwards | 396,500 |  |  | 396,500 |  |  |
State and Local Jurisdiction [Member] | Between 2037 and 2041 [Member] |  |  |  |  |  |  |
Operating Loss Carryforwards | $ 170,400 |  |  | $ 170,400 |  |  |

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