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Note 1 - Business Activities and Summary of Significant Accounting Policies - Intangible Assets (Details) - USD ($) $ in Thousands | Oct. 31, 2023 | Oct. 31, 2022
--- | --- | ---
Amortizable intangible assets, net | $ 13,595 | $ 15,296
Non-amortizable intangible assets | 1,174 | 1,174
Trademarks [Member] |  |
Non-amortizable intangible assets | $ 1,174 | 1,174
Noncompete Agreements [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 5 years |
Amortizable intangible assets, gross | $ 423 | 423
Accumulated amortization | (378) | (334)
Amortizable intangible assets, net | 45 | 89
Customer Relationships [Member] |  |
Amortizable intangible assets, gross | 6,058 | 6,058
Accumulated amortization | (3,461) | (3,074)
Amortizable intangible assets, net | $ 2,597 | 2,984
Customer Relationships [Member] | Minimum [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 7 years |
Customer Relationships [Member] | Maximum [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 15 years |
Order or Production Backlog [Member] |  |
Amortizable intangible assets, gross | $ 327 | 327
Accumulated amortization | (327) | (313)
Amortizable intangible assets, net | $ 0 | 14
Order or Production Backlog [Member] | Minimum [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 1 year |
Order or Production Backlog [Member] | Maximum [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 2 years |
Patents [Member] |  |
Amortizable intangible assets, gross | $ 368 | 368
Accumulated amortization | (176) | (143)
Amortizable intangible assets, net | $ 192 | 225
Patents [Member] | Minimum [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 10 years |
Patents [Member] | Maximum [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 14 years |
Trade Names [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 15 years |
Amortizable intangible assets, gross | $ 1,700 | 1,700
Accumulated amortization | (189) | (76)
Amortizable intangible assets, net | $ 1,511 | 1,624
Patented Technology [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 10 years |
Amortizable intangible assets, gross | $ 11,100 | 11,100
Accumulated amortization | (1,850) | (740)
Amortizable intangible assets, net | $ 9,250 | $ 10,360

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