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Note 1 - Business Activities and Summary of Significant Accounting Policies (Details Textual) - USD ($) |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Mar. 01, 2022 | Nov. 04, 2019 | Oct. 31, 2023 | Oct. 31, 2022 | Jan. 31, 2023
Goodwill |  |  | $ 8,085,000 | $ 8,085,000 |
Asset Impairment Charges |  |  | 0 | 0 |
Amortization of Intangible Assets, Total |  |  | 1,701,000 | 1,282,000 |
Advertising Expense |  |  | 76,000 | 333,000 |
Research and Development Expense |  |  | 3,151,000 | 2,913,000 |
Stock-based compensation expense |  |  | $ 898,000 | $ 689,000 |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount |  |  | 811,135 | 508,889 |
Trademarks [Member] |  |  |  |  |
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) |  |  | $ 0 | $ 0 |
Microlab/FXR LLC [Member] |  |  |  |  |
Business Combination, Consideration Transferred | $ 24,500,000 |  |  |  |
Payments to Acquire Businesses, Gross | 24,250,000 |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net |  |  | 17,200,000 |  |
Goodwill |  |  | 5,600,000 |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill |  |  | 11,600,000 |  |
Schrofftech [Member] |  |  |  |  |
Business Combination, Consideration Transferred | 24,475,000 | $ 5,300,000 |  |  |
Payments to Acquire Businesses, Gross | 24,250,000 | 4,000,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net | 24,475,000 |  | 3,100,000 |  |
Goodwill | 5,617,000 |  | 1,100,000 |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill | $ 13,840,000 |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets |  |  | 500,000 |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles |  |  | $ 1,500,000 |  |
Schrofftech [Member] | Earn Out [Member] |  |  |  |  |
Business Combination, Consideration Transferred, Liabilities Incurred |  | $ 1,300,000 |  |  |
Minimum [Member] |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  |  | 3 years |  |
Minimum [Member] | Microlab/FXR LLC [Member] |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  |  |  | 1 year
Maximum [Member] |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  |  | 5 years |  |
Maximum [Member] | Microlab/FXR LLC [Member] |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  |  |  | 15 years
Weighted Average [Member] |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  | 8 years 6 months 18 days |  |

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