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Note 1 - Unaudited Interim Condensed Consolidated Financial Statements (Details Textual) - USD ($) $ in Thousands | 1 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
May 31, 2020 | Jul. 31, 2021 | Jul. 31, 2020 | Oct. 31, 2020 | Nov. 01, 2019
Operating Lease, Right-of-Use Asset |  | $ 1,482 |  | $ 1,421 |
Operating Lease, Liability, Total |  | 1,546 |  |  |
Accounting Standards Update 2016-02 [Member] |  |  |  |  |
Operating Lease, Right-of-Use Asset |  |  |  |  | $ 2,300
Operating Lease, Liability, Total |  |  |  |  | $ 2,400
Paycheck Protection Program CARES Act [Member] |  |  |  |  |
Proceeds from Issuance of Long-term Debt, Total | $ 2,800 | $ 0 | $ 2,788 |  |

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