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Intangible assets (Tables) | 9 Months Ended
--- | ---
Jul. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangible assets | Intangible assets consist of the following (in thousands):
|  | July 31, 2016 |  | October 31, 2015 |
Amortizable intangible assets: |  |  |  |  |  |  |
Non-compete agreements (estimated lives 3 - 5 years) |  | $ | 310 |  | $ | 310 |
Accumulated amortization |  |  | (264) |  |  | (212) |
|  |  | 46 |  |  | 98 |
Customer relationships (estimated lives 7 - 15 years) |  |  | 5,099 |  |  | 5,099 |
Accumulated amortization |  |  | (1,509) |  |  | (1,101) |
|  |  | 3,590 |  |  | 3,998 |
Backlog (estimated life 1 year) |  |  | 134 |  |  | 134 |
Accumulated amortization |  |  | (134) |  |  | (100) |
|  |  | - |  |  | 34 |
Patents (estimated life 14 years) |  |  | 142 |  |  | 142 |
Accumulated amortization |  |  | (12) |  |  | (4) |
|  |  | 130 |  |  | 138 |
Totals |  | $ | 3,766 |  | $ | 4,268 |
Non-amortizable intangible assets: |  |  |  |  |  |  |
Trademarks |  | $ | 1,387 |  | $ | 1,387 |

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