Net sales, income (loss) before provision for income taxes and other related segment information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Oct. 31, 2018
Segment Reporting Information [Line Items]
Net sales	$ 10,647	$ 7,966
Income (loss) from continuing operations before provision for income taxes	808	360
Depreciation and amortization	137	127
Total assets	32,507	26,851	$ 32,502
RF Connector and Cable Assembly
Segment Reporting Information [Line Items]
Net sales	3,258	2,630
Income (loss) from continuing operations before provision for income taxes	280	(157)
Depreciation and amortization	45	44
Total assets	6,635	6,074
Custom Cabling Manufacturing and Assembly
Segment Reporting Information [Line Items]
Net sales	7,389	5,336
Income (loss) from continuing operations before provision for income taxes	506	514
Depreciation and amortization	92	83
Total assets	11,026	8,264
Corporate
Segment Reporting Information [Line Items]
Net sales	0	0
Income (loss) from continuing operations before provision for income taxes	22	3
Depreciation and amortization	0	0
Total assets	$ 14,846	$ 12,513