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Net sales, income (loss) before provision for income taxes and other related segment information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Oct. 31, 2018
Oct. 31, 2017
Segment Reporting Information [Line Items]    
Net sales $ 50,196 $ 22,983
Income (loss) from continuing operations before provision (benefit) for income taxes 7,494 232
Depreciation and amortization 513 506
Total assets 32,502 25,060
RF Connector and Cable Assembly    
Segment Reporting Information [Line Items]    
Net sales 11,846 11,456
Income (loss) from continuing operations before provision (benefit) for income taxes 107 107
Depreciation and amortization 172 177
Total assets 6,529 6,297
Custom Cabling Manufacturing and Assembly    
Segment Reporting Information [Line Items]    
Net sales 38,350 11,527
Income (loss) from continuing operations before provision (benefit) for income taxes 7,340 96
Depreciation and amortization 341 329
Total assets 8,763 6,353
Corporate    
Segment Reporting Information [Line Items]    
Net sales 0 0
Income (loss) from continuing operations before provision (benefit) for income taxes 47 29
Depreciation and amortization 0 0
Total assets $ 17,210 $ 12,410