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Net sales, income (loss) before provision for income taxes and other related segment information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2018	Apr. 30, 2017	Apr. 30, 2018	Apr. 30, 2017
Segment Reporting Information [Line Items]
Net sales	$ 22,380	$ 7,640	$ 32,721	$ 14,257
Income (loss) from continuing operations before provision (benefit) for income taxes	4,020	64	4,577	(275)
Depreciation and amortization	69	214	422	434
RF Connector and Cable Assembly
Segment Reporting Information [Line Items]
Net sales	2,734	2,607	5,364	5,142
Income (loss) from continuing operations before provision (benefit) for income taxes	(331)	102	(344)	83
Depreciation and amortization	14	41	87	88
Custom Cabling Manufacturing and Assembly
Segment Reporting Information [Line Items]
Net sales	19,646	5,033	27,357	9,115
Income (loss) from continuing operations before provision (benefit) for income taxes	4,347	(36)	4,914	(376)
Depreciation and amortization	55	173	335	346
Corporate
Segment Reporting Information [Line Items]
Net sales	0	0	0	0
Income (loss) from continuing operations before provision (benefit) for income taxes	4	(2)	7	18
Depreciation and amortization	$ 0	$ 0	$ 0	$ 0

X

- Definition

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(1)(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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