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REVENUE (Disaggregation of Revenue, by Product Line) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Jan. 31, 2019 | Jan. 31, 2018
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  | $ 466,146 | $ 404,410
Flight Support Group [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  | 287,213 | 254,721
Flight Support Group [Member] | Aftermarket Replacement Parts [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | [1] | 159,497 | 134,288
Flight Support Group [Member] | Repair and Overhaul Parts and Services [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | [2] | 67,163 | 68,324
Flight Support Group [Member] | Specialty Products [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | [3] | 60,553 | 52,109
Electronic Technologies Group [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  | 184,429 | 155,658
Electronic Technologies Group [Member] | Electronic Components for Defense, Space and Aerospace [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | [4] | 137,750 | 117,341
Electronic Technologies Group [Member] | Other Electronic Components [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | [5] | 46,679 | 38,317
Corporate And Eliminations [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  | $ (5,496) | $ (5,969)
[1] | Includes various jet engine and aircraft component replacement parts.
[2] | Includes primarily the sale of parts consumed in various repair and overhaul services on selected jet engine and aircraft components, avionics, instruments, composites and flight surfaces of commercial and military aircraft.
[3] | Includes primarily the sale of specialty components such as thermal insulation blankets, renewable/reusable insulation systems, advanced niche components, complex composite assemblies, and expanded foil mesh.
[4] | Includes various component parts such as electro-optical infrared simulation and test equipment, electro-optical laser products, electro-optical, microwave and other power equipment, high-speed interface products, power conversion products, underwater locator beacons, emergency locator transmission beacons, traveling wave tube amplifiers, microwave power modules, three-dimensional microelectronic and stacked memory products, crashworthy and ballistically self-sealing auxiliary fuel systems, radio frequency (RF) and microwave amplifiers, transmitters and receivers, high performance communications and electronic intercept receivers and tuners and high performance active antenna systems.
[5] | Includes various component parts such as electromagnetic and radio interference shielding, high voltage interconnection devices, high voltage advanced power electronics, harsh environment connectivity products, custom molded cable assemblies and silicone material for a variety of demanding applications.

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
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