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Note 10 - Intangible Assets - Intangible Assets (Details) (Parentheticals) | Jan. 31, 2024 | Jul. 31, 2023 | Oct. 31, 2022
--- | --- | --- | ---
Noncompete Agreements [Member] |  |  |
Estimated life (Year) | 5 years |  |
Customer Relationships [Member] | Minimum [Member] |  |  |
Estimated life (Year) |  | 7 years | 7 years
Customer Relationships [Member] | Maximum [Member] |  |  |
Estimated life (Year) | 15 years |  |
Order or Production Backlog [Member] | Minimum [Member] |  |  |
Estimated life (Year) |  | 1 year | 1 year
Order or Production Backlog [Member] | Maximum [Member] |  |  |
Estimated life (Year) | 2 years |  |
Patents [Member] | Minimum [Member] |  |  |
Estimated life (Year) | 10 years |  |
Patents [Member] | Maximum [Member] |  |  |
Estimated life (Year) | 14 years |  |
Trade Names [Member] |  |  |
Estimated life (Year) | 15 years |  |
Technology-Based Intangible Assets [Member] |  |  |
Estimated life (Year) | 10 years |  |

X
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_NoncompeteAgreementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_CustomerRelationshipsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_OrderOrProductionBacklogMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_PatentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TradeNamesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TechnologyBasedIntangibleAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |