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Net Sales, Income (Loss) Before Provision for Income Taxes and Other Related Segment Information (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Apr. 30, 2015 | Apr. 30, 2014 | Apr. 30, 2015 | Apr. 30, 2014
Segment Reporting Information [Line Items] |  |  |  |
Net sales | $ 8,076 us-gaap_SalesRevenueNet | $ 5,764 us-gaap_SalesRevenueNet | $ 14,969 us-gaap_SalesRevenueNet | $ 11,614 us-gaap_SalesRevenueNet
Income from continuing operations before provision for income taxes | 733 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 770 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 764 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 1,116 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Depreciation and amortization | 199 us-gaap_DepreciationAndAmortization | 145 us-gaap_DepreciationAndAmortization | 389 us-gaap_DepreciationAndAmortization | 294 us-gaap_DepreciationAndAmortization
RF Connector and Cable Assembly |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 3,339 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = rfil_RfConnectorsAndCableAssemblyMember | 3,312 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = rfil_RfConnectorsAndCableAssemblyMember | 6,040 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = rfil_RfConnectorsAndCableAssemblyMember | 6,284 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = rfil_RfConnectorsAndCableAssemblyMember
Income from continuing operations before provision for income taxes | 448 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = rfil_RfConnectorsAndCableAssemblyMember | 590 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = rfil_RfConnectorsAndCableAssemblyMember | 404 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = rfil_RfConnectorsAndCableAssemblyMember | 958 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = rfil_RfConnectorsAndCableAssemblyMember
Depreciation and amortization | 41 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = rfil_RfConnectorsAndCableAssemblyMember | 47 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = rfil_RfConnectorsAndCableAssemblyMember | 82 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = rfil_RfConnectorsAndCableAssemblyMember | 96 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = rfil_RfConnectorsAndCableAssemblyMember
Medical Cabling and Interconnector |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 485 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = rfil_MedicalCablingAndInterconnectorMember | 712 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = rfil_MedicalCablingAndInterconnectorMember | 1,060 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = rfil_MedicalCablingAndInterconnectorMember | 1,463 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = rfil_MedicalCablingAndInterconnectorMember
Income from continuing operations before provision for income taxes | 130 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = rfil_MedicalCablingAndInterconnectorMember | 193 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = rfil_MedicalCablingAndInterconnectorMember | 276 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = rfil_MedicalCablingAndInterconnectorMember | 333 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = rfil_MedicalCablingAndInterconnectorMember
Depreciation and amortization | 5 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = rfil_MedicalCablingAndInterconnectorMember | 7 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = rfil_MedicalCablingAndInterconnectorMember | 10 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = rfil_MedicalCablingAndInterconnectorMember | 15 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = rfil_MedicalCablingAndInterconnectorMember
Corporate |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales |  | 0 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | 0 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | 0 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember
Income from continuing operations before provision for income taxes | 10 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | 6 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | 15 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | 11 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember
Depreciation and amortization |  | 0 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | 0 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | 0 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember
Custom Cabling Manufacturing and Assembly |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 4,252 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = rfil_CustomCablingManufacturingAndAssemblyMember | 1,740 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = rfil_CustomCablingManufacturingAndAssemblyMember | 7,869 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = rfil_CustomCablingManufacturingAndAssemblyMember | 3,867 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = rfil_CustomCablingManufacturingAndAssemblyMember
Income from continuing operations before provision for income taxes | 145 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = rfil_CustomCablingManufacturingAndAssemblyMember | (19)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = rfil_CustomCablingManufacturingAndAssemblyMember | 69 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = rfil_CustomCablingManufacturingAndAssemblyMember | (186)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = rfil_CustomCablingManufacturingAndAssemblyMember
Depreciation and amortization | $ 153 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = rfil_CustomCablingManufacturingAndAssemblyMember | $ 91 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = rfil_CustomCablingManufacturingAndAssemblyMember | $ 297 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = rfil_CustomCablingManufacturingAndAssemblyMember | $ 183 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = rfil_CustomCablingManufacturingAndAssemblyMember

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