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Note 1 - Business Activities and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Oct. 31, 2023
Notes Tables |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  | 2023 |  |  | 2022 |
Amortizable intangible assets: |  |  |  |  |  |  |  |
Non-compete agreement (estimated life 5 years) |  | $ | 423 |  |  | $ | 423 |
Accumulated amortization |  |  | (378 | ) |  |  | (334 | )
|  |  | 45 |  |  |  | 89 |
Customer relationships (estimated lives 7 - 15 years) |  |  | 6,058 |  |  |  | 6,058 |
Accumulated amortization |  |  | (3,461 | ) |  |  | (3,074 | )
|  |  | 2,597 |  |  |  | 2,984 |
Backlog (estimated life 1 - 2 years) |  |  | 327 |  |  |  | 327 |
Accumulated amortization |  |  | (327 | ) |  |  | (313 | )
|  |  | - |  |  |  | 14 |
Patents (estimated life 10 - 14 years) |  |  | 368 |  |  |  | 368 |
Accumulated amortization |  |  | (176 | ) |  |  | (143 | )
|  |  | 192 |  |  |  | 225 |
Tradename (estimated life 15 years) |  |  | 1,700 |  |  |  | 1,700 |
Accumulated amortization |  |  | (189 | ) |  |  | (76 | )
|  |  | 1,511 |  |  |  | 1,624 |
Proprietary technology (estimated life 10 years) |  |  | 11,100 |  |  |  | 11,100 |
Accumulated amortization |  |  | (1,850 | ) |  |  | (740 | )
|  |  | 9,250 |  |  |  | 10,360 |
Totals |  | $ | 13,595 |  |  | $ | 15,296 |
Non-amortizable intangible assets: |  |  |  |  |  |  |  |
Trademarks |  | $ | 1,174 |  |  | $ | 1,174 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
Year ending |  |  |  |
October 31, |  | Amount |
2024 |  | $ | 1,688 |
2025 |  |  | 1,643 |
2026 |  |  | 1,643 |
2027 |  |  | 1,643 |
2028 |  |  | 1,643 |
Thereafter |  |  | 5,335 |
Total |  | $ | 13,595 |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | 2023 |  |  | 2022 |
Numerators: |  |  |  |  |  |  |  |
Consolidated net (loss) income (A) |  | $ | (3,078,000 | ) |  | $ | 1,448,000 |
Denominators: |  |  |  |  |  |  |  |
Weighted average shares outstanding for basic earnings per share (B) |  |  | 10,283,449 |  |  |  | 10,120,254 |
Add effects of potentially dilutive securities - assumed exercise of stock options |  |  | - |  |  |  | 122,163 |
Weighted average shares outstanding for diluted earnings per share (C) |  |  | 10,283,449 |  |  |  | 10,242,417 |
Basic (loss) earnings per share (A)/(B) |  | $ | (0.30 | ) |  | $ | 0.14 |
Diluted (loss) earnings per share (A)/(C) |  | $ | (0.30 | ) |  | $ | 0.14 |

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