ACQUISITIONS (Details Textuals)	9 Months Ended
Jul. 31, 2018
ELT [Member]
Business Acquisition [Line Items]
Name of Acquired Entity	Emergency Locator Transmitter Beacon product line ("ELT Product Line") of Instrumar Limited.
Description of Acquired Business	The ELT Product Line designs and manufactures Emergency Locator Transmitter Beacons for the commercial aviation and defense markets, that upon activation, transmit a distress signal to alert search and rescue operations of the aircraft's location.
STE [Member]
Business Acquisition [Line Items]
Name of Acquired Entity	Sensor Technology Engineering, Inc. ("Sensor Technology")
Percentage of Voting Interests Acquired	85.00%
Description of Acquired Business	Sensor Technology designs and manufactures sophisticated nuclear radiation detectors for law enforcement, homeland security and military applications.
Ownership Percentage by Noncontrolling Owners	15.00%

With respect to a business combination completed during the period, this element provides a description of the business, other than the name, which may include the industry, size, products and other important information.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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Name of the acquired entity.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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