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Note 7 - Income Tax Provision (Benefit) - Effective Income Tax Reconciliation (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Oct. 31, 2024 | Oct. 31, 2023 | Oct. 31, 2022
U.S. federal statutory tax rate | $ (799) | $ (893) |
U.S. federal statutory tax rate, percent | 21.00% | 21.00% |
State tax provision, net of federal tax benefit | $ (170) | $ (212) |
State tax provision, net of federal tax benefit, percent | 4.50% | 5.00% |
Permanent differences | $ 14 | $ 15 |
Permanent differences, percent | (0.40%) | (0.40%) |
Stock options | $ 45 | $ 88 |
Stock options, percent | (1.20%) | (2.10%) |
R&D credits | $ 102 | $ 238 |
R&D credits, percent | 2.70% | 5.60% |
Uncertain tax position reserves | $ 3 | $ 13 |
Uncertain tax position reserves, percent | (0.10%) | (0.30%) |
Return-to-provision adjustments | $ 34 | $ 69 |
Return-to-provision adjustments, percent | 0.90% | 1.60% |
Valuation allowance | $ 3,839 | $ 124 |
Valuation allowance, percent | (100.90%) | (2.90%) |
Income Tax Expense (Benefit) | $ 2,796 | $ (1,172) | $ (1,172)
Income tax expense, percent | (73.50%) | 27.50% |

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