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SELECTED FINANCIAL STATEMENT INFORMATION (Details Textuals) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jul. 31, 2017 | Jul. 31, 2016 | Jul. 31, 2017 | Jul. 31, 2016 | Apr. 30, 2017 | Oct. 31, 2016 | Oct. 31, 2011
Selected Financial Statement Information (Details) [Abstract] |  |  |  |  |  |  |
Accrued customer rebates and credits | $ 11.9 |  | $ 11.9 |  |  | $ 11.9 |
Total customer rebates and credits deducted within net sales | $ 2.7 | $ 3.1 | $ 8.1 | $ 8.3 |  |  |
Flight Support Group [Member] | FY 2011 Acquisition [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Percentage of Voting Interests Acquired |  |  |  |  | 9.95% |  |
Ownership Percentage by Parent |  |  |  |  |  |  | 80.10%
Ownership Percentage by Noncontrolling Owners |  |  |  |  |  |  | 19.90%
Heico Flight Support Corp [Member] | A2C [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Percentage of Voting Interests Acquired | 80.10% |  | 80.10% |  |  |  |
Ownership Percentage by Noncontrolling Owners | 19.90% |  | 19.90% |  |  |  |
Heico Flight Support Corp [Member] | Flight Support Group [Member] | A2C [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Percentage of Voting Interests Acquired | 80.10% |  | 80.10% |  |  |  |

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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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