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Note 16 - Income Taxes (Details Textual) - USD ($) $ in Thousands | 3 Months Ended
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Jan. 31, 2020 | Jan. 31, 2019
Income Tax Expense (Benefit), Total | $ 1,712 | $ 346
Deferred Tax Assets, Valuation Allowance, Total | 596,000 |
Domestic Tax Authority [Member] |  |
Income Tax Expense (Benefit), Total |  |
Domestic Tax Authority [Member] | Between 2028 and 2037 [Member] |  |
Operating Loss Carryforwards, Total | 1,500,000 |
Domestic Tax Authority [Member] | Indefinite Tax Period [Member] |  |
Operating Loss Carryforwards, Total | 32,100 |
State and Local Jurisdiction [Member] |  |
Income Tax Expense (Benefit), Total | 1,712 | $ 346
Operating Loss Carryforwards, Total | 2,500,000 |
State and Local Jurisdiction [Member] | Indefinite Tax Period [Member] |  |
Operating Loss Carryforwards, Total | 74,400 |
State and Local Jurisdiction [Member] | Between 2020 and 2024 [Member] |  |
Operating Loss Carryforwards, Total | 211,400 |
State and Local Jurisdiction [Member] | Between 2025 and 2029 [Member] |  |
Operating Loss Carryforwards, Total | 1,200,000 |
State and Local Jurisdiction [Member] | Between 2030 and 2034 [Member] |  |
Operating Loss Carryforwards, Total | 760,100 |
State and Local Jurisdiction [Member] | Between 2035 and 2039 [Member] |  |
Operating Loss Carryforwards, Total | $ 277,600 |

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