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Note 16 - Income Taxes (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jul. 31, 2020 | Jul. 31, 2019 | Jul. 31, 2020 | Jul. 31, 2019
Income Tax Expense (Benefit), Total | $ 853 | $ 537 | $ 2,665 | $ 1,228
Deferred Tax Assets, Valuation Allowance, Total | 592,900 |  | 592,900 |
Domestic Tax Authority [Member] |  |  |  |
Income Tax Expense (Benefit), Total | 0 | 0 | 0 | 0
Domestic Tax Authority [Member] | Between 2028 and 2037 [Member] |  |  |  |
Operating Loss Carryforwards, Total | 1,500,000 |  | 1,500,000 |
Domestic Tax Authority [Member] | Indefinite Tax Period [Member] |  |  |  |
Operating Loss Carryforwards, Total | 32,200 |  | 32,200 |
State and Local Jurisdiction [Member] |  |  |  |
Income Tax Expense (Benefit), Total | 853 | $ 537 | 2,665 | $ 1,228
Operating Loss Carryforwards, Total | 2,500,000 |  | 2,500,000 |
State and Local Jurisdiction [Member] | Indefinite Tax Period [Member] |  |  |  |
Operating Loss Carryforwards, Total | 74,900 |  | 74,900 |
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 | 760,100 |  | 760,100 |
State and Local Jurisdiction [Member] | Between 2035 and 2039 [Member] |  |  |  |
Operating Loss Carryforwards, Total | $ 277,500 |  | $ 277,500 |

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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