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Note 9 - Segment Information - Net Sales, Income Before Provision for Income Taxes and Other Related Segment Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jul. 31, 2021
Jul. 31, 2020
Jul. 31, 2021
Jul. 31, 2020
Oct. 31, 2020
Net sales $ 15,257 $ 9,544 $ 36,316 $ 32,348  
Income (loss) before (benefit) provision for income taxes 1,198 (219) 6,095 (388)  
Depreciation and amortization 178 252 592 760  
Total assets 46,414 40,894 46,414 40,894 $ 40,822
Corporate, Non-Segment [Member]          
Net sales 0 0 0 0  
Income (loss) before (benefit) provision for income taxes 2 1 2,803 19  
Depreciation and amortization 0 0 0 0  
Total assets 16,702 16,942 16,702 16,942  
RF Connector and Cable Assembly [Member] | Operating Segments [Member]          
Net sales 3,933 3,611 11,060 10,568  
Income (loss) before (benefit) provision for income taxes 255 500 2,202 1,479  
Depreciation and amortization 35 40 105 123  
Total assets 7,188 8,413 7,188 8,413  
Custom Cabling Manufacturing and Assembly [Member] | Operating Segments [Member]          
Net sales 11,324 5,933 25,256 21,780  
Income (loss) before (benefit) provision for income taxes 941 (720) 1,090 (1,886)  
Depreciation and amortization 143 212 487 637  
Total assets $ 22,524 $ 15,539 $ 22,524 $ 15,539