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Note 16 - Income Taxes (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Apr. 30, 2022 | Apr. 30, 2021 | Apr. 30, 2022 | Apr. 30, 2021 | Oct. 31, 2021 | Oct. 31, 2020
Income Tax Expense (Benefit), Total | $ 18,510 | $ (457,644) | $ 29,103 | $ (457,018) |  |
Deferred Tax Assets, Net, Total | 400,600 |  | 400,600 |  |  |
Deferred Tax Assets, Valuation Allowance, Total | 101,600 |  | 101,600 |  |  |
Contract Backlog | 2,100,000 |  | 2,100,000 |  |  |
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 | 15,923 | (366,270) | 23,973 | (366,270) |  |
Domestic Tax Authority [Member] | Between 2029 and 2038 [Member] |  |  |  |  |  |
Operating Loss Carryforwards | 1,100,000 |  | 1,100,000 |  |  |
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 | 2,587 | $ (91,374) | 5,130 | $ (90,748) |  |
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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